Processing surfaces of elastomer films with coatings to prevent creasing in roll
SUBSTANCE: invention relates to the technology of obtaining elastomeric materials and particularly to processing surfaces of elastomer films in order to prevent creating in a roll. The method involves forming a film layer from an elastomeric polymer from a block-copolymer of vinyl arylene and conjugated diene monomers, which can be stretched by at least 150% of the initial size and then shrink to not more than 120% of the initial size. An anti-crease coating layer is applied on the first surface of the film. The coating consists of a solvent and an anti-crease coating component selected from lacquer and a surfactant. The film is rolled into a roll, the anti-crease coating component being in contact with the second surface of the film.
EFFECT: efficient method of processing surfaces of elastomer films to prevent creasing in a roll.
18 cl, 5 dwg, 2 ex
The technical field to which the invention relates
The present invention relates to crystalline non-caking covered elastomeric films and related methods of making crystalline non-caking covered elastomeric films.
The prior art to which the invention relates
Elastomeric materials has long been valued for their ability to stretch, sitting on top of or around a larger object size and then shrink, providing a tight fit around the object. In recent years, synthetic polymeric elastomeric materials supplemented or replaced natural rubber. Compounds such as polyurethane, copolymers of styrene, ethylene-propylene polymers and other synthetic polymeric elastomers are well known in this field.
Elastomeric materials can take many forms. The elastomer can be formed into yarns, cords, tapes, films, fabrics and other various forms. The form and structure of the elastomeric material is regulated by the intended end use of the product. For example, the elastomers are often used in clothing to ensure a tight fit, such as in active wear. Elastomers can also form a flexible but effective barriers, such as cuffs, thermal clothing, designed to keep the EPLO body. In these applications elastomers are most often exist in the form of threads or filaments which enter into the fabric of clothing.
The elastomers may exist in the form of yarns, fabrics or films. The elastomeric yarn is a challenging task of assembling the service, because the threads should be used as one component among many in the manufacturing process. These threads may also be weak and tend to break, which can lead to defects in elastic product, even if there is an excessive number of threads. With elastomeric fabrics partly easier to work in the production process, but the fabrics themselves are showing a steady rise both in terms of raw materials, and the cost of production of the fabric. The elastomeric film is usually easier to use for production than the threads, and they are less expensive to produce than the elastomeric fabric. The elastomeric film is also stronger than the threads or fabrics, and they are less likely to break when used.
However, the lack of polymer films is that the polymers used to create films that are really sticky or tacky. When elastomeric films made from these polymers, ekstragiruyut and wound into a roll, the tape will stick to itself or "cake", thereby making true the tion or impossible unwinding. Caking becomes more apparent when the film is aging or stored in a humid environment, such as inside a warehouse for long term storage.
The problem of caking of elastomeric materials tried to solve a variety of ways. Inside the film, you can enter antiadhesive, which are usually a powdered inorganic materials such as silicon dioxide or talc. Antiadhesive you can also sprinkle the external side of the extrudable film when the film is formed. However, antiadhesive must be added in large quantities to reduce caking to an acceptable level, and these high levels of antiadhesive are destructive to the elastomeric properties of the film. Other means of reducing the caking is the creation of a rough surface of the film, such as embossing film, which reduces the contact surface-to-surface in the collapsed film and adds tiny air pockets that help to reduce caking. Unfortunately, this also leads to the creation of a more subtle weak zones in the film, which are then subjected to rupture and destruction, when the stretch film. Another means of reducing blocking is the introduction of a physical barrier, such as a disposable strip in the roll between the layers of the collapsed film. Remove the gasket then uber the Ute, when the film roll is unwound for further processing. However, remove the gasket is usually thrown away, creating waste and significant additional costs for the manufacturer. Another means of reducing the caking elastomeric film is a joint extrusion of a thin outer layer, also known as "skins" or "top layer"or less elastic elastomeric polymer crystalline non-caking on the surface of the elastomeric film. Suitable crystalline non-caking polymers for such coverings include polyolefins, such as polyethylene or polypropylene. Such polyolefin sheathing are elastic, but not elastomeric materials. They have a small effect on the elastomeric properties of the film as a whole, because they form only a small proportion of the overall composition of the film. However, these polyolefin skin will stretch and become permanently deformed when the entire elastomeric film stretch or "trigger" for the first time. When the tensile force applied to the elastomeric film is removed, the elastomeric base will shrink as usual. Stretch lining, which is not elastomeric, instead, will shrink, when the basis is reduced, and will create a surface with mikroteksturoy.
There remains a need for effective means the active production of elastomeric film, which can be rolled up into rolls and stored without caking. This film should not have the worst elastomeric properties, should not create excessive waste and production costs, and should provide an attractive pleasant surface texture after activation.
In one embodiment, the present invention is directed to crystalline non-caking elastomeric film. Crystalline non-caking elastomeric film includes a film layer of an elastomeric polymer and a layer of crystalline non-caking coating solvent-based, containing a component of the coating against caking. Crystalline non-caking coating is applied on one or both sides of the surface film layer of elastomeric polymer, making the elastomeric film crystalline non-caking.
In another embodiment, the present invention is directed to a method of forming a crystalline non-caking elastomeric film. The method comprises applying to the first surface of the elastomeric film of the polymer crystalline non-caking coating based on solvent-containing component of the coating against caking. You can cover one or both sides of the surface layer of elastomeric polymer film to create a crystalline non-caking elastomeric film.
Additional embodiments of the invention will be apparent, taking into attention the following detailed description of the invention.
Brief description of drawings
The invention will be understood more fully, taking into account the drawings, in which:
Figure 1 is a schematic view of a typical flexographic printing or flexographic coating process;
Figure 2 is a schematic diagram of a typical process coatings applied by spraying;
Figure 3 is a schematic diagram of a typical coating process is done with a knife;
Figure 4 is a schematic diagram of a typical coating process applied irrigation; and
Figure 5 is a schematic diagram of a typical process of coating applied by roller.
Detailed description of the invention
The inventors have found that a thin coating, such as paint, lubricant, surfactant, or suspension, on one or both sides of the elastomeric film after extrusion but before coiling, can eliminate caking in roll or reduce it to an acceptable level. It is necessary to cover only one side of the elastomeric film, although not necessarily cover and the other side of the film surface. The elastomeric film can be winded and stored after this surface treatment without significant caking in the roll. It was unexpectedly found that the coating prevents and does not interfere with the aminating another layer, such as non-woven material, the coated surface of the elastomeric film.
For the purposes of this disclosure provides definitions the following terms:
"Film" refers to a material in the form of plates, where the dimensions of the material on the x (length) and y (width) directions are substantially larger than the size of the z (thickness) direction. The film has a thickness in the z-direction in the range from approximately 1 μm to 1 mm
"Laminate" refers to a layered structure of the plate material, are arranged and connected so that the layers are substantially equal in length along the width of the most narrow laminate plate. Layers can contain a film, fabric or other materials in the form of plates or combinations thereof. For example, the laminate may be a structure containing a layer of foil and a layer of fabric bonded together along their width so that two layers remained United as a single plate in normal use. The laminate can also be called a composite or coated material. "Laminate" refers to the way in which form such a layered structure.
"Coverage" refers to the solution-based solvent or suspension, which can be applied as a thin layer on the surface of the material. "Floor" can also refer to a thin layer of material after ka whom it was applied to the surface and substantially dried or hardened. For the purposes of this disclosure, the floor refers to a layer of material of a thickness of about 0.05-3 μm. For the purposes of this disclosure, the coating may contain spatially separated areas of the coating, for example, in the form of dots or the like, separated by areas of bare surface. Alternatively, the coating may contain a substantially continuous coating layer, which surrounds the discrete area of the uncovered surface. Alternatively, the coating may contain a substantially continuous coating layer with a substantial absence of uncovered surface.
"Solvent" or "solvent-carrier" refers to a liquid in which the material is dissolved or suspended. For the purposes of this disclosure "solvent" or "solvent-carrier" generally refers to liquid (including water and organic liquids), which are dissolved or suspended material coating, except when the term is used in the context from which it is evident that mean another solution or solvent. Typical solvents used for coatings discussed in this disclosure, include, but are not limited to, water, isopropyl alcohol, hexane, ethyl acetate, or other known solvents.
"Printing ink" refers to mixtures containing pigments, binders and solvents and carriers, which can be applied on the surface of the material as the floor. Printing ink can be used to accommodate whitening agents, mufflers, paint, graphics, images, drawings, inscriptions or other markings on the surface of the material. Printing ink is usually applied as a thin layer on the surface of the material printed, although you can also use other methods of coating. After applying printing ink dries by evaporation or oxidation of the solvent carrier, forming a coating. Suitable printing ink commercially available from companies such as Flint Ink, Ann Arbor, Michigan, INX International Ink Co., Schaumburg, Illinois or Sun Chemical, Parsippanny, New Jersey.
"Lacquer" refers to the solution of the substances that form a coating on the material to give it a shiny, decorative and/or protective surface. Lacquer, which may be colored or colorless, contains natural or synthetic polymers. One conventional polymer used for synthetic varnishes, is the pyroxylin or nitrocellulose dissolved in a solvent carrier, with optional plasticizers, dyes or other components. Varnish can be applied on the surface by printing, spraying, dyeing, building coating by immersion and by other known methods. After applying the AK dries by evaporation of the solvent carrier and/or the oxidation of the polymer, forming a coating. Suitable lacquers are commercially available from companies such as Flint Ink, Ann Arbor, Michigan or Sun Chemical, Parsippanny, New Jersey.
"Surfactant" refers to any chemical compound that reduces the surface tension of the solvent carrier in which the dissolved surfactant. In most cases the solvent is water, the liquid, which under normal conditions has a high surface tension. By reducing the surface tension of the solvent (e.g. water) surfactant solution allows more easily to moisten and cover the surface. Most surfactants are amphipatic chemical compounds with a hydrophobic chemical group at one "end" of the molecule and a hydrophilic chemical group on the opposite "end" of the molecule. Ordinary Soaps and detergents, as well as other cationic, anionic or non-ionic surfactants are considered surfactants for the purposes of the present disclosure.
"Lubricant" refers to any chemical compound that reduces friction between adjacent surfaces, when the lubricant cover one or both surfaces. Conventional lubricants include oils, thick with ASCI and waxes. For the purposes of this disclosure lubricants dissolved or suspended in a suitable solvent medium such as the usual organic solvents. Lubricants are water-based are also suitable for the present disclosure. For example, suitable lubricants are water-based can be obtained in the form of a series of lubricants under the brand POLYWATER® manufactured by American Polywater® Corporation of Stillwater, MN.
"Suspension" or "suspended" refers to the mixture of the solvent carrier and powdered solid, which is insoluble in the solvent, but which is mixed substantially homogeneous manner, so that the crushed solid material distributed throughout the volume of the solvent. Suspension and suspension can vary in consistency from diluted liquids with low solids concentrations to thick pastes with high solids concentrations. Examples of suitable suspensions or suspensions can include powders of natural minerals, such as calcium carbonate, talc, clay or mica, mixed with a suitable solvent carrier, such as water. Other examples of suitable suspensions or powders include powders of organic substances, such as starch or cellulose, mixed with a suitable solvent carrier, such as water. Other examples of suitable suspensions and and suspensions include powders or particles of the polymer, mixed with a suitable solvent carrier such as isopropyl alcohol. Suitable polymeric powders under the trademark MICROTHENE® can be purchased from Equistar Chemicals LP, Houston, Texas.
"Stretch" and "reduce" are descriptive terms used to describe the elastomeric properties of the material. "Stretchable" means that a material can be stretched using a stretching force to a certain size, significantly larger than its original size without tearing. For example, the material length of 10 cm, which can stretch to a length of about 15 cm without breaking under the action of the pulling force, can be described as a tie rod. "Cut" means that the material, which is stretched by pulling forces up to a certain size, significantly larger than its original size, without a break, will return to its original size or to a specific size that is sufficiently close to the original size, when the pulling force is removed. For example, the material length of 10 cm, which can stretch to a length of about 15 cm without breaking under the action of the pulling force and which is returned to the length of approximately 10 cm or to a specific length, which is sufficiently close to 10 cm, can be described as cut.>
"Elastomer" or "elastomeric" refers to polymeric materials that can be stretched at least 150% of their original size and then reduced to no more than 120% of their original size in the direction of applying pulling force. For example, the elastomeric film length of 10 cm will be stretched at least about 15 cm under the action of the pulling force and then will be reduced to no more than 12 cm when Troubleshooting electrical power. Elastomeric materials are stretched and cut.
"Elastic" refers to polymeric materials that can be stretched at least 130% of their original size without breaking, but either are not reduced significantly, or be reduced by an amount greater than 120% of its original size, and thus, are not elastomeric, as defined above. For example, the elastic film length of 10 cm will be stretched at least approximately 13 cm under the action of the pulling force and then either stay length of approximately 13 cm, or be reduced to a length greater than about 12 cm when Troubleshooting electrical power. Elastic materials are stretched, but not cutting.
"Fragile" refers to polymeric materials that are extremely resistant to p is the cohesive power and cannot be stretched to more than 110% of their original size without breaking or cracking. For example, brittle film length of 10 cm cannot extend more than approximately 11 cm under the action of the pulling force without cracking. Fragile film is not reduced or is reduced only minimally when Troubleshooting electrical power. Brittle materials are not stretched or cut.
"Caking" refers to the phenomenon of adhesion of the material with him, at a time when it is coiled, folded or otherwise bring into close contact surface-to-surface due to internal stickiness or adhesiveness of one or more components of the material. Caking can be quantitatively measured by ASTM D3354 "Load caking plastic film in the method of parallel spaced plates".
"Nasleduemoe" refers to a material which is not deformed when it is put in close contact with yourself.
- "Activate" or "activation" refers to the process by which an elastomeric film or material making it easy to stretch. The most frequently activation is a physical processing, modification or deformation of the elastomeric film. Stretch film for the first time is one way to activate the film. Elastomeric material, which was subjected to activation, referred to as "activated". The usual example for this activation is what I inflate the balloon. First time, when inflating a balloon ("activate"), the material of the balloon, stretched. If the material of the balloon, it is difficult to stretch, the man who blew up a balloon, will be repeatedly manually stretch nonduty balloon in order to facilitate inflation. If the inflated balloon to deflate and then inflate again, "activated" balloon will be much easier to inflate.
The elastomeric polymers used in the films and methods of the present invention may contain any extrudable elastomeric polymer. Examples of such elastomeric polymers include copolymers of vinylidene and conjugated diene monomers, natural rubber, polyurethane polymers, polyester polymers, elastomeric polyolefins and mixtures of polyolefins, elastomeric polyamides, and the like, the Elastomeric film may also contain a mixture of two or more elastomeric polymers of the above type. Preferred elastomeric polymers are copolymers of vinylidene and conjugated diene monomers, such as AB, ABA, ABC or ASA block copolymers, in which the segments And contain arylene, such as polystyrene, and the segments b and C contain diene, such as butadiene, isoprene or ethylenebutylene. Suitable copolymers dostupnima acquiring firms KRATON Polymers, Houston, Texas or Dexco Polymers LP Planquemine, Louisiana.
Part of the elastomeric film of this invention may include a single layer film containing an elastomeric polymer. Patented elastomeric film may also include a multilayer film. Each layer of the multilayer elastomeric film may contain elastomeric polymers or layers may be either elastomeric or thermoplastic elastomere polymers either singly or in combination in each layer. The only restriction is that at least one layer of the multilayer elastomeric film must contain an elastomeric polymer, and a multilayer elastomeric film must be an elastomeric film. If the elastomeric film is a multilayer, one or more layers may contain elastic polymer and/or brittle polymer.
The elastomeric film of the present invention may contain other components to modify the properties of the film to help with film processing or modifying the appearance of the film. These additional components may be the same or may vary present in each layer. For example, polymers such as a homopolymer of polystyrene or polystyrene, high impact resistance, can be mixed with the elastomeric polymer in the core layer of the film to give the film stiffness and is locsite strength properties of the film. Polymers, reducing viscosity, and plasticizers can be added as additives. You can add other additives such as pigments, dyes, antioxidants, antistatic agents, agents to improve slip, foaming agents, heat and light stabilizers, and inorganic and/or organic fillers. Each additive may be present in one, more than one or all layers of the multilayer film.
The elastomeric film can be made of any film-forming method. In specific embodiments, the implementation for the formation of elastomeric film using the extrusion method, such as extrusion method of irrigation or extrusion blown. Extrusion of films by method of irrigation or blow is well known. Joint extrusion of multilayer films by method of irrigation or blow is also well-known.
After the film was extrudible, give her a chance to cool and harden. The film then can be subjected to optional additional stages of processing such as activation, irised, adhesive lamination to other materials, longitudinal cutting, and other similar stages of processing.
Before winding, however, on the surface of the elastomeric film is a thin layer of coating in a solvent carrier, such as printing ink, varnish, surface is chestno-active substance, lubricant or suspension to prevent caking. Without regard to theory, the inventors believe that this surface coating prevents caking on one or several mechanisms. According to the first mechanism is believed that the coating can form a thin layer on the surface, thereby providing a physical barrier between the adhesive surfaces of the film. According to the second mechanism is considered that the coating can be absorbed or contact with the surface of the film, thus reducing the stickiness of the film surface and the inclination of the surface material to caking.
Water is the preferred solvent carrier for coverage. Printing inks, varnishes, lubricants, solutions of surfactants and suspension of water-based well-known in this field. As a solvent for coating can be used with solvents, carriers, in addition to water, such as isopropyl alcohol, hexane or ethyl acetate. Printing inks, varnishes and lubricants in non-aqueous solvents known in the field. However, due to problems of environmental impact evaporation of solvents, for security reasons and because of the problems of disposal of waste water is the preferred solvent for this process.
The coating is applied on the extruded film p which means any method, which creates a thin layer on the film surface. The coating can be applied onto the film by a printing method that uniformly causes a thin coating liquid. Another method of applying the coating is a spray fine spray solution on the film. The coating can also be applied using plants for coating knife, spray, sponge rollers, immersed rollers, rollers with bristles or other known means of applying liquids on the surface.
Flexography is one embodiment of a method of applying a thin coating layer on the film, as illustrated in figure 1. In the illustrated method, the layer of the polymer film 12 ekstragiruyut from the melt through a film-forming stencil 18 and flows through the gap shown between the rubber roller 13 and the metal platen 14. Metal roller can be cooled for rapid cooling of the molten polymer film. Metal roller 14 can also engrave an embossed pattern, if the pattern desired in the resulting film. After the extruded film is cooled and solidified, it is passed through flexographic installation. This system includes a circuit Board 20 mounted on the platen 22, anilox roller 24 and a device for placing the cover 26. The pattern for pokr is ment is embossed printed circuit Board 20. The circuit Board is then fixed on the shaft 22. The solution for coating is applied on the printed circuit Board, for example, anilox roller 24, taking cover from the device to host 26, such as a tray, and transfers the coating on the rising part of the PCB 20. Printed circuit Board 20 then rotates over the material 12 on which you want to print. Optional you can use the drying chamber 40 after coating to accelerate drying of the solvent carrier and/or solidification of the coating on the surface of the material 12', which was printed.
In another embodiment, patented method uses a method of coating by sputtering for deposition of a thin layer of coating on the film. This method of coating by sputtering is well known. Figure 2 illustrates a typical process of coating by spraying. The layer of the polymer film 12 ekstragiruyut from the melt through a film-forming stencil 18 and flows through the gap shown between the rubber roller 13 and the metal platen 14. Metal roller can be cooled for rapid cooling of the molten polymer film. Metal roller 14 can also engrave an embossed pattern, if the pattern desired in the resulting film. After the extruded film is cooled and solidified, e is passed through a station for coating by spraying, where the covering solution is applied using the spray booth 30 on film. The film may be supported by a supporting roller 31 or other supporting surface during the coating process by sputtering. Coated film 12' may then pass through an optional heating or drying chamber 40, to dry the solvent carrier and/or otvetit floor.
In another embodiment, patented method uses a method of applying a coating knife for applying a thin coating layer on the film. Figure 3 illustrates a typical coating process with a knife. The layer of the polymer film 12 ekstragiruyut from the melt through a film-forming stencil 18 and flows through the gap shown between the rubber roller 13 and the metal platen 14. Metal roller can be cooled for rapid cooling of the molten polymer film. Metal roller 14 can also engrave an embossed pattern, if the pattern desired in the resulting film. After the extruded film is cooled and solidified, it is passed through a station for coating with a knife, comprising a supporting roller 31, which is controlled by the flow rate of the dispenser with the cover 32, the subtle knife 36 and the knife holder 38. Controlled flow dispenser with floor 32 causes the Orly coating solution or suspension 34 on a moving film 12. Covering solution 34 is then spread in a thin layer on the film using a knife 36. The knife 36 controls the thickness of the covering layer and smoothes the surface. Coated film 12' may then pass through an optional heating or drying chamber 40, to dry the solvent carrier and/or otvetit floor.
In another embodiment, patented method uses a method of coating the irrigation system for applying a thin coating layer on the film. Figure 4 illustrates a typical coating process of watering. As in the previous drawings, the layer of the polymer film 12 ekstragiruyut from the melt through a film-forming stencil 18 and flows through the gap shown between the rubber roller 13 and the metal platen 14. After the extruded film is cooled and solidified, it is passed through a station for coating the irrigation system, including a device for coating the irrigation 42 and the supporting roller 44. In the coating process of watering the floor 34 is dosed in a device for coating irrigation 42. Metered coating 32 then flows evenly through the edge of the device for coating irrigation 42 and flows in a laminar strip on the surface of the moving film 12. The coating 34 is pulled into a thin covering, at a time when it is applied on a moving film 12. Coated film 12' may then pass through an optional heating or drying chamber 40, to dry the solvent carrier and/or otvetit floor.
In another embodiment, patented method uses a method of applying a coating roller for applying a thin coating layer on the film. Figure 5 illustrates a typical process for coating roller. As in the previous drawings, the layer of the polymer film 12 ekstragiruyut from the melt through a film-forming stencil 18 and flows through the gap shown between the rubber roller 13 and the metal platen 14. After the extruded film is cooled and solidified, it is passed through a station for coating roller including a roller for engagement of the cover 50, roller coating 52, the supporting roller 54 and a device for placing the cover 56. The solution coating pick up roller for gripping the cover 50 of the device for placement of the cover 56, such as a tray. The platen to grip the cover 50 moves the coating roller for coating 52. Roller coating 52 then rotates over a moving film 12 and causes the coating solution on the surface of the film. Coated film 12' may then pass through an optional heating or drying chamber 40, in order to dry the solvent carrier and/or otvetit floor.
Figure 5 roller to grip the cover 50 and the roller for coating 52 is shown as rollers with hard smooth surfaces that transfer the coating from the container 56 on the film 12. However, for the purposes of this disclosure the platen to grip the cover 50 may also have a spongy surface, bristly or brush the surface of the etched surface or other suitable surface for transferring the coating solution on the film.
These images show optional drying chamber 40. However, for some coatings may be desirable drying or curing of solvent-carrier cover up winder. Such coatings can better work to prevent caking, when they are wetted with a solvent carrier. If this is true, then drying chamber 40 is not necessary.
After the elastomeric film is coated, the film can be winded in a roll and stored even at elevated temperatures, such as in the warehouse that are not air-conditioned. After storage for several weeks or months elastomeric film can be easily unwound for further processing and/or inclusion in other products.
Coated elastomeric film can be sent to further processing or immediately after fabrication and coating or after with whom taiwania and storage. This processing may include, but not be limited to, such impacts as stopped down; cutting; laminating thermal, adhesive or microwave methods on other substrates, such as nonwoven materials; activating elastomer or the introduction of paintings, ribbons or pieces of film into the final products, such as clothing or a diaper. It should be understood that these and other additional processing stage are within the scope of this invention.
If the coating is a type, which prevents caking when the floor is wet, it may be important to remove the residue solvent carrier from the surface of the film after storage of the film, but before the film is subjected to additional processing. Surprisingly, the inventors discovered that the remaining solvent carrier to be quickly and easily evaporate from the film surface when the film is unwound. Often removal of the solvent carrier does not require additional support, such as a heating surface. However, if the process requires it, the film can pass through a heating station, in order to facilitate the drying of the film immediately before the additional stages of processing.
In one example, the additional processing of crystalline non-caking elastomeric film can act is to promote well-known way stretch. Machine-directional orientation (MOD) can be used to activate the elastomeric film in the longitudinal direction, while broadening can activate the film in the transverse direction. Especially preferred method of activating the coated elastomeric film is a step-by-step stretching the film between vzaimostsepljaemost platens, as described in U.S. patent No. 4144008. Cushions for step-by-step stretching can be used to activate the film in the longitudinal direction, in the transverse direction, at an angle or in any combination thereof.
In another example, additional processing patented crystalline non-caking coated elastomeric film can be laminated on the substrate by known methods of lamination. The substrate may be any elastic material in the form of a plate, such as another polymer film, fabric or paper. In one non-limiting embodiment, the substrate is a nonwoven fabric. Examples of non-woven sheets include non-woven cloth obtained spunbond method, cardownie obtained aerodynamic method from the melt, and woven from yarn non-woven cloth. These non-woven cloth may contain fibers of polyolefins such as polypropylene and polyethylene, polyesters, polyamides, polyuret the new, elastomers, viscose, cellulose, copolymers or combinations thereof, or mixtures thereof. Paper products such as napkins and products such as napkins, containing fibers based on cellulose or cellulose fibers formed into a Mat, are considered as non-woven or non-woven material, which falls within the scope of this invention. Nonwovens may also contain fiber, which are homogeneous structures or contain two-component structure, such as sheath/core, parallel structures, structures like Islands in the sea and other well-known two-component configuration. For a detailed description of the non-woven material, see “Nonwoven Fabric Primers and Reference Sampler” edited E.A.Vaughn, Association of the Nonwoven Fabrics Industry, 3rd edition (1992). Such nonwoven fibrous materials typically have a mass of about 5 grams per square meter (g/m2) to 75 g/m2. For the purposes of the present invention the nonwoven material can be very easy, with the main weight of approximately 5-20 g/m2. However, more severe non-woven fabrics, with a base weight of approximately 20-75 g/m2may be desirable in order to achieve certain properties, such as pleasant tissue-like texture, the resulting laminate or the final product.
Also within this invention are the others who the IPA layers of the substrate, such as woven materials, knitted materials, coarse canvas, network, etc. These materials, of course, can be used as a protective layer, which protects the elastomeric film from caking in the roll. However, due to cost, availability and ease of production of non-woven materials are generally preferred for laminates in the patented method.
Patented crystalline non-caking coated elastomeric film can be laminated on the substrate by known methods of lamination. These methods include laminating extrusion lamination, adhesive lamination, thermal compound, ultrasonic connection, calender connection point connection and laser connection, and other such methods. The combination of these connection methods are also within the present invention.
Patented crystalline non-caking coated elastomeric film can also be laminated in two or more layers of the substrate, as described above.
If patentable crystalline non-caking coated elastomeric film laminated on the substrate, which is not an elastomer, it may be necessary to enable the laminate to make it stretch and shorten. Laminates of elastomeric films and fabrics are particularly suitable for activating step-by-step RA is taiwanian. As disclosed in the patent of the applicant 5422172 (“Wu'172”), which entered into this description by reference, elastomeric laminates manufactured varieties here you can activate through step-by-step stretching, using it describes cushions for step-by-step stretching.
Patented crystalline non-caking coated elastomeric film can also be laminated in two or more layers of the substrate at any time during the process. Namely, the film can be laminated on the substrate before or after activation of the film. In the case of very elastomeric layers of substrates is desirable to perform the lamination to activate and then activate the laminate. Alternatively, a crystalline non-caking multilayer elastomeric film can be activated, the substrate can be laminated on the activated crystalline non-caking multilayer elastomeric film, and then the laminate activate a second time in order to enable all layers of the laminate are easy to stretch. If the activated film should be laminated on elastomeric substrate and activating after lamination is undesirable elastomeric substrate can shrink, crimp, crumple, fold creases, wrinkling or otherwise process, in order to enable the components of the film laminate to stretch without breaking or damage of the second when strata.
Crystalline non-caking coated elastomeric film or the laminate can also be cut into strips or cut into sheets or pieces and then by means of an adhesive, heat or ultrasonic method be laminated on one or several pieces of the final product.
Crystalline non-caking coated elastomeric film or the laminate can also stop down any or perforated in order to create air flow and breathability in the film or laminate. Examples of how iris film or laminate include, but are not limited to, chemical etching, laser drilling, vacuum perforation, puncture needles, calender drilling, ultrasonic drilling and other well-known processes.
The following examples are provided to illustrate embodiments of the present invention. These examples are in no way intended to limit the invention.
The elastomeric film of the present invention were made and tested against caking in the roll. The elastomeric film contained approximately 50% of blockcopolymer styrene-isoprene-styrene (SIS) (Vector™ 4111 company Dexco Polymers LP), 25% of blockcopolymer styrene-butadiene-styrene (SBS) (Vector™ 7400 company Dexco Polymers LP), 20% masterbatches against caking (9840 firm Lehmann & Voss, containing approximately 50% of antiadhesive in Dow SYRON™ 485 polystyrene polymer carrier), 2% masterbatches for slip (9841 firm Lehmann & Voss, containing approximately 20% of the agent for improving sliding on the basis of erucic acid amide in Dow STYRON™ 485 polystyrene polymer carrier) and 3% white concentrated dye (Schulman® 8500 firm Schulman Corporation). The film produced on the line for joint moulding and extrusion, and target the bulk of the film was approximately 70 g/cm2. The film was irrigated with one hand spray Polywater® A, aqueous solution of surfactants. The other surface of the elastomeric film is not processed surface-active substance. The film is then wound and kept at room temperature for approximately 1 week.
After storing the film was completely squandered in order to determine whether there was a substantial sliianie. The film could fully unwind without having significant problems caking.
The elastomeric film of the present invention were made and tested against caking in the roll. The elastomeric film contained approximately 45% of blockcopolymer styrene-isoprene-styrene (SIS) (Vector™ A company Dexco Polymers LP), 30% of blockcopolymer styrene-butadiene-styrene (SBS) (Vector™ 7400 company Dexco Polymers LP), 15% polypropylene, high impact (Dow STYRON™ 478), 2% masterbatches for slip (9841 firm Lehmann & Voss, the content is overall approximately 20% of the agent, improving sliding on the basis of erucic acid amide in Dow STYRON™ 485 polystyrene polymer carrier) and 5% white concentrated dye (Schulman® 8500 firm Schulman Corporation). The film produced on the line for joint moulding and extrusion, and target the bulk of the film was approximately 70 g/cm2. One side of the film coated by printing with a varnish dissolved in a mixture of organic solvents (PE-081505A company Flint Ink, Ann Arbor, Michigan) flexographic printing press, using standard fully covered with a dot print pattern. The coating was applied, receiving coverage about 0.4 μm thick. The other side of the film not covered.
Coated elastomeric film wound in a roll and kept at room temperature for 5 days. After storing the film was completely squandered in order to determine whether there was a substantial sliianie. The film could fully unwind in the presence of small caking or without it. The film is then re-wound and kept optional for 15 days at room temperature. After aging elastomeric film could easily unravel.
Described here is specific illustrations and embodiments of inherently are only illustrative and are not intended to limit from reenie, defined by the claims. Additional embodiments of, and examples will be apparent to the ordinary person skilled in the art in the light of these specifications and are within the scope of the claimed invention.
1. Method of forming a crystalline non-caking coated elastomeric film, including:
a) formation of a film of an elastomeric polymer having first and second surfaces, and the film layer of elastomeric polymer contains extrudable elastomeric polymer containing block copolymers of vinylidene and conjugated diene monomers, where the block copolymers selected from the group consisting of AB, ABA, ABC and ASA block copolymers, where a contains polystyrene, and b and C contain butadiene, isoprene or ethylenebutylene, and the elastomeric polymer can be stretched, at least 150% of its original size, and then shrink to no more than 120% of the original size, and where the film layer is an elastomeric polymer has a thickness in the range from approximately 1 μm to 1 mm;
b) applying to the first surface of the elastomeric film of the polymer of the coating layer against caking-based solvent containing the component of the coating against caking, with the formation of crystalline non-caking coated elastomeric film before winding it into a roll, and solvent free crystalline non-caking layer cover the Oia has a thickness in the range from about 0.05 microns to about 3 microns, and component coverage against caking selected from the group consisting of varnish, and surfactants; and
(C) winding crystalline non-caking coated elastomeric film in a roll, and component coverage against caking in contact with the second surface.
2. The method according to claim 1, wherein the anti-caking based solvent is applied to the film layer is an elastomeric polymer using a method selected from the group consisting of printing, coating, spraying, coating, knife coating, sprinkling, coating, immersion coating, roller coating with a foam roller and coating brush roller.
3. The method according to claim 1, wherein the coating layer against caking solvent-based put on a layer of elastomeric film pattern containing spatially separated areas of the coating, separated by areas of bare surface.
4. The method according to claim 1, wherein the coating layer against caking solvent-based put on a layer of elastomeric film pattern containing substantially continuous coverage area, which is surrounded by a substantially discontinuous region uncovered surface.
5. The method according to claim 1, wherein the coating layer against caking-based solvent is applied on the layer of elastomeres film pattern, containing substantially continuous coverage without significant areas of bare surface.
6. The method according to claim 1, wherein the film layer is an elastomeric polymer comprises a mixture of an elastomeric polymer and polystyrene high impact.
7. The method according to claim 1, wherein the film layer is an elastomeric polymer contains a layer of a multilayer elastomeric film.
8. The method according to claim 1, further comprising a stage of drying.
9. The method according to claim 1, further comprising activating the crystalline non-caking coated elastomeric film.
10. The method according to claim 9, in which the crystalline non-caking coated elastomeric film activate the stretch.
11. The method according to claim 10, in which the crystalline non-caking coated elastomeric film activate method selected from the group consisting of step-by-step stretching, machine-directional orientation, and broadening their combinations.
12. The method according to claim 1, further comprising a coating on the second surface of the film layer of elastomeric polymer of the coating layer against caking-based solvent containing the component against caking.
13. The method according to claim 1, further comprising linking crystalline non-caking coated elastomeric film with a layer of the substrate.
14. The method according to item 13, in which the substrate includes a layer of a polymeric film, non-woven material, b is per product, woven material, knitted material, mesh, or combinations thereof.
15. The method according to item 13, in which the layer of the substrate and a crystalline non-caking coated elastomeric film are connected by a method selected from the group consisting of co-extrusion, extrusion coating, adhesive bonding, thermal bonding, ultrasonic connection, calender connection point connection and combinations thereof.
16. The method according to item 13, further comprising linking coated elastomeric film with many layers of the substrate, where the multiple layers of the substrate contain one or more substrates selected from the group consisting of a layer of a polymeric film, non-woven material, paper products, woven material, knitted material, mesh and combinations thereof.
17. The method according to claim 1, further comprising an irised crystalline non-caking coated elastomeric film.
18. The method according to claim 1, wherein the film layer is an elastomeric polymer contains styrene-isoprene-styrene (SIS) block copolymer and styrene-butadiene-styrene (SBS) block copolymer.
SUBSTANCE: disclosed is a method of producing a coated adhesive layer with improved optical characteristics, in which a curable composition containing curable organopolysiloxane is applied onto the surface of a substrate, and improved optical purity is achieved owing to that the composition contains a group of silicon dioxide particles having average size ranging from approximately 1 to approximately 7 micrometres. The invention also discloses a method of producing a multilayer article with improved inter-layer adhesion characteristics owing to reduction of the air space between layers, where the adhesive layer is obtained using the disclosed method, and the corresponding multilayer article.
EFFECT: higher optical purity of the coating adhesive layer and adhesion between layers in multilayer articles owing to virtually no air trapping when applying the adhesive layer.
20 cl, 6 tbl, 4 ex
FIELD: process engineering.
SUBSTANCE: invention relates to laminate used in glass panels, lenses etc. Proposed laminate comprises base made up of polycarbonate resin, first layer resulted from hardening acrylic resin hardening, second layer produced by thermal hardening of organosiloxane resin. Acrylic resin composition comprises (A) acrylic copolymer containing at least 70 mol % of repeating link of formula (A)
where X is hydrogen or methyl, Y is methyl, ethyl, cycloalkyl or hydroxyalkyl with the number of atoms of 2 to 5, or residue of UV radiation absorber based on triazine; blocked polyisocyanate compound; hardening catalyst; and (D) UV radiation absorber based on triazine. Note here that total content of UV radiation absorber based on triazine in formula (A) and as component (D) varies from 1 to 40 wt %. Composition of organosiloxane resin in proposed laminate comprises (E) colloidal silicon dioxide and (F) hydrolytic condensate of alkoxy silane. Invention covers also window glass made based on said laminate.
EFFECT: higher strength and longer life.
25 cl, 15 tbl, 50 ex
SUBSTANCE: composition contains at least one expandable microsphere and at least one ionic compound which is cationic. The composition also contains a certain set of cellulose fibres. The ionic compound is selected from a group comprising a polyamine, polyethyleneimine, colloid and sol. The colloid or sol contains at least one member from a group comprising silica, alumina, tin oxide, zirconium dioxide, antimony oxide, iron oxide and rare-earth metal oxides. The outer surface of the expandable microsphere, which is anionic, is not covalently bonded with an ionic compound. The composition has electrokinetic potential greater than or equal to 0 mV at pH of approximately 9.0 or less with ionic strength between 10-6 mol and 0.1 mol. The composition is prepared by bringing into contact at least one expandable microsphere and at least one ionic compound to form a mixture. The mixture is centrifuged to form a first phase containing at least one ionic compound and a second phase containing a particle. A solution containing a certain amount of cellulose fibre is also added. A low-density paper or cardboard base and article which is a cardboard container with good operational characteristics is obtained. The weight of the article is equal or less than 1 oz. The paper or cardboard base has Sheffield smoothness less than 250 units measured using a TARR1 T 538 om-1 technique, and colour speckling 2nd cyan not greater than 6. The base has Parker Print surface roughness from approximately 1.0 to 0.5, measured using a TARRI T 555 om-99 technique.
EFFECT: improved properties of the composition.
28 cl, 5 dwg, 4 tbl, 2 ex
SUBSTANCE: method of coating substrates comprises the following steps: a) preparing the substrate, b) depositing a composition onto at least one side of the substrate, the composition containing an inorganic compound which contains at least one metal and/or semimetal selected from a group comprising Sc, Y, Ti, Zr, Nb, V, Cr, Mo, W, Mn, Fe, Co, B, Al, In, Tl, Si, Ge, Sn, Zn, Pb, Sb, Bi or mixtures thereof, and at least one element selected from a group comprising Te, Se, S, O, Sb, As, P, N, C, Ga or mixtures thereof, c) drying the composition deposited at step b), d) applying at least one coating onto at least one side of the substrate onto which the composition was deposited at step b), wherein the coating contains silane of general formula (Z1)Si(OR)3, where Z1 is R, OR or Gly (Gly=3-glycidyloxypropyl), and R is an alkyl residue with 1-18 carbon atoms, and R can be identical or different, oxide particles selected from a group comprising oxides of Ti, Si, Zr, Al, Y, Sn, Zn, Ce or mixtures thereof, and an initiator, wherein the coating preferably contains 3-aminopropyl-trimethoxysilane and/or 3-aminopropyl-triethoxysilane and/or N-2-aminoethyl-3-aminopropyl-trimethoxysilane, and e) drying the coating applied at step d). The composition at step b) and/or the coating at step d) contain at least one pigment which reflects infrared radiation, and said pigment has a core coated by an electroconductive layer which contains tin oxides and/or titanium oxides. The invention also discloses use of the coated substrate obtained using the disclosed method as wall-paper.
EFFECT: method enables cheap production of a coated substrate capable of reflecting infrared radiation, and simplifies facing buildings.
FIELD: process engineering.
SUBSTANCE: invention relates to coat and method of coating outer surfaces. Proposed method of coating pipeline outer surfaces by polymer capable of forming cross-links under action of water comprises the following stages: a) pipeline outer surface is coated by, at least, one polymer that forms cross-links under action of water. Note here that said polymer represents HDPE grafted by alkoxy silane. b) Polymer is cross linked on subjecting it to water at increased temperature to produce cross-linked polymer layer unless cross linking degree makes ≥30% to ≤80%. c) Polymer is cross linked that can form cross links under action of water at ≥50°C to ≤350°C, preferably at ≥150°C to ≤300°C, more preferably at ≥200°C to ≤260°C. Note here that during these stages, pipeline is heated to ≥170°C to ≤230°C, preferably to ≥180°C to ≤220°C, more preferably to ≥190°C to ≤210°C. Powder ionic spraying method is used epoxy resin layer is applied with thickness of ≥0.08 to ≤0.16 mm, preferably of ≥0.10 to ≤0.13 mm, more preferably, 0.125 mm. Method of envelopment extrusion is used to apply a layer of glue with thickness of ≥0.15 mm to ≤0.30 mm, preferable of ≥0.22 mm to ≤0.27 mm, more preferably of 0.25 mm. By method of extrusion, applied is upper layer of HDPE with thickness of ≥2.8 mm to ≤3.2 mm, preferably of ≥2.9 mm to ≤3.1 mm, more preferably of 3 mm. Extrusion is used to apply layer of HDPE cross linked by silane with thickness of ≥0.8 mm to ≤1.2 mm, preferably of ≥0.9 mm to ≤1.1 mm, more preferably of 1 mm. Now, pipeline is treated by water with temperature of ≥10°C to ≤40°C, preferably of ≥20°C to ≤30°C, more preferably of 25°C. Coat is made as described above. Invention covers also coated pipeline.
EFFECT: improved operating performances and expanded applications.
11 cl, 2 tbl, 3 dwg, 2 ex
SUBSTANCE: invention describes a foamed vinylaromatic polymer containing a) a matrix obtained via polymerisation of 100 wt % vinylaromatic monomer; b) 1-10 wt % (per amount of polymer (a)) foaming agent incorporated in the polymer matrix; c) 0.01-25 wt % (per amount of polymer (a)) technical carbon, characterised by average diametre between 30 and 2000 nm, specific surface area between 5 and 40 m2/g, sulphur content between 0.1 and 1000 parts per million and ash content between 0.001 and 1%; d) 0-10 wt % (per amount of polymer (a)) graphite; e) 0-10 wt % (per amount of polymer (a)) aluminium; f) 0-10 wt % (per amount of polymer (a)) antimony trisulphide, provided that the total amount of components (a)-(f) equals 100, and that concentration of matrix (a) is not less than 80 wt % and at least one of (d)-(f) is present. The invention also describes a foamed article having density between 5 and 50 g/l, characterised by thermal conductivity between 25 and 50 mW/mK, obtained after foaming at temperature several times higher than the glass transition point of the polymer and granules of the vinylaromatic polymer given above. Described is a method of improving insulating capacity of the foamed vinylaromatic polymer given above.
EFFECT: improved insulating capacity of the foamed product.
13 cl, 6 ex
SUBSTANCE: present invention relates to a method of treating and modifying materials. Described is a method of preparing materials which protects said materials from UV radiation and ozone using a modifier, involving obtaining the modifier by reacting a stilbene derivative in form of 4,4'-bis(s-triazinyl-)diamine-2,2'-disulphostilbene at temperature of up to 55°C in the presence of water with diamine of carbonic acid in amount of 0.5-55 wt % with respect to weight of said stilbene derivative, and material such as foamed or foamable plastic, cement or concrete is then directly treated with the prepared modifier, and/or active radicals of said modifiers are introduced into the surface of said materials. Described also is a method of preparing materials for their protection from UV radiation and ozone using a modifier, involving obtaining the modifier by inoculating a stilbene derivative in form of 4,4'-bis(s-triazinyl-)diamine-2,2'-disulphostilbene with solid diamine of carbonic acid with crystal size less than 40 mcm at 55°C in the absence of water, by grinding the modifiers in a mill and homogenisation at ambient temperature for more than 4 hours, with amount of diamine of carbonic acid of 0.1-45 wt % with respect to the solid stilbene derivative, and material such as foamed or foamable plastic, cement or concrete is then directly treated with the prepared modifier, and/or active radicals of said modifiers are introduced into the surface of said materials.
EFFECT: elimination of negative effect of UV radiation and ozone on surface of materials.
2 cl, 4 ex
SUBSTANCE: invention relates to an article having at least one base (S) which has at least one polyolefin composition (C1) containing at least one non-functionalised polyolefin (PO1), wherein said base has a surface and at least one layer (Σ) covering at least one section of the surface of the said base, wherein said layer (Σ) is formed by at least one polyolefin composition (C2) which contains at least one functionalised polyolefin (POg) obtained by grafting acid and/or anhydride groups to at least one non-functionalised polyolefin (PO2), whereby said acid and/or anhydride groups are completely or partially neutralised with at least one neutralising gent, and at least one emulsifying agent.
EFFECT: article has improved surface properties, improved antistatic and electroconduction properties.
36 cl, 2 ex
SUBSTANCE: invention discloses a composition containing the following (wt %): a surface hydrophobisation component - fluoro-hydrocarbon silane containing hydrolysable functional groups of general formula YCF2 (CF2)n CH2-O-(CH2)m- SiX3, where Y denotes F or H; n is an integer from 3 to 11, m = 2 or 3; X is a functional substitute selected from: CI, OCH3, OC2H5, OC3H7, OC(O)CH3, NH2, N(H)CH3, N(CH3)2, N(C2H5)2 (1-1.5); texturing filler - aerosol (1-1.5); siloxane binder - polyamino-functional siloxane oligomer of formula [CH3(H)N]3Si[OSi(CH3)C6H5]3O-Si[N(H)CH3]3 (0.1-0.2) and organic solvent selected from aliphatic ethers and aliphatic ketones (the rest). The disclosed coating composition is suitable for high-voltage lines.
EFFECT: composition enables to obtain a coating which is characterised not only by high wetting angle values, but by prolonged water resistance, the method of depositing said composition does not require preparation of surfaces to create a super-hydrophobic effect.
3 cl, 4 dwg, 6 ex
SUBSTANCE: invention relates to a method of processing surfaces of articles made from polymer composite material and/or their joints, e.g. through bonding or combined hardening of the article and adherend, glued material or substrate. A hardened or curable polymer composite article is obtained. A curable composition is obtained. The composition contains not less than one thermosetting resin, at least one modifier prepared beforehand which is not functional. The modifier contains at least one elastomer. The composition is applied directly or indirectly onto at least part of outermost surface of the article.
EFFECT: high strength of joints, including under conditions of considerable pre-gluing moisture.
25 cl, 5 tbl
FIELD: personal use articles.
SUBSTANCE: invention relates to light industry and may be used to manufacture inner parts of shoes and prosthetic-orthopaedic items on the basis of non-woven needle-punching synthetic fibres and tanning wastes. Composite material for inner parts of shoes and prosthetic-orthopaedic items with thickness of 1.9-2.2 mm includes three layers impregnated with skin glue. At the same time outer layers of material represent needle-punching cloths made of mixture of synthetic bicomponent and polyester fibres. Inner layer consists of ground tanning chips with fibre size of 0.5-1.8 mm. Material has the following composition, wt % : synthetic fibres 61- 65; tanning chips 25-27; skin glue 10 -12. Produced material may be shaped as resistant in operation. Required hygienic properties are maintained both by presence of protein fibrous components - tanning chips and by using highly porous non-woven cloth made of synthetic fibres as the base. Composition of synthetic fibres producing cloth is selected so that as a result of their coupling and subsequent heat moulding, fibrous-porous structure of material is preserved.
EFFECT: new material, providing for required hygienic and strength properties, is suitable to make inner soles and various prosthetic-orthopaedic items.
1 tbl, 2 ex
SUBSTANCE: invention refers to sheet composite material and to procedure for its fabrication. Material consists of at least one porous internal layer and of at least one shell. The porous internal layer is made out of canvas fabricated out of material of structure with open cells and consisting of random crossing reinforcing fibres bound with at least one or more not foamed thermo-plastic material. The porous internal layer contains fibres at amount of approximately from 20 % wt to 80 % wt of common weight of the said porous internal layer. The shell includes at least one of the following components: thermo-plastic film, elastomer film, metal foil, thermo-reactive coating, non-organic coating, mesh on base of fibres, non-woven cloth and woven material. The shell has ultimate oxygen index over 22 determined according to ISO 4589 and is able to withstand temperature from approximately 200°C to approximately 425°C. Also each shell covers at least part of surface of the said one porous internal layer.
EFFECT: produced material possesses reduced rate of flame spread, reduced level of smoke density, and reduced level of heat and gases release.
23 cl, 3 tbl
FIELD: chemical industry; production of the nanocomposite materials on the basis of the high-molecular compounds with application of carbon in the nanostucturized coatings.
SUBSTANCE: the invention is pertaining to the composite materials on he basis of the high-molecular compounds with usage of the carbon in the nanostructurized coatings including the additional devices and connections, and may be used as the anode of the electrolytic capacitor due to storage of the electrical potential in the current-carrying layers. The nanostructurized coating of the current-carrying basis is bound directly to the layer of the amorphous carbon sp3 - the hybridized state of the carbon atoms and additionally has the metal layer with the depth of 25-250 nanometers. The surface of the film basis has a flutings of 10-30 nanometers depth and-or is equipped with the pores of 0.2-6 microns and the total volume of 10-60 %. At that 1/5-1/3 part of the pores is through. The invention ensures the adhesion bond and improvement of the electro-physical performances of the material.
EFFECT: the invention ensures the adhesion bond and improvement of the electro-physical performances of the material.
FIELD: polymer materials.
SUBSTANCE: invention relates to composite materials based on high-molecular weight carbon-involving compounds and can be used for anodes of electrolytic condensers made from dielectric elastic film with current-conducting coating. Polyester-based film material has nano-sized metallic coating. A diamond-like layer 5-50 nm thick is disposed between modified surface of polyester base and metallic coating and, on the surface of metallic coating, spongy aluminum layer is deposited having surface development factor within a range of 80 to 400. Diamond-like nanolayer is characterized by sp3 hybridization of amorphous carbon atoms, amorphous carbon being deposited in vacuum from gas phase under action of ion-plasma source.
EFFECT: increased specific electrical capacity of condenser due to increased operation voltages and adhesion between high-developed surfaces of functional film coating nanolayers.
SUBSTANCE: invention relates to a perforated film, a method of producing a perforated film for packaging, storage container made from said film and method of filling the storage container with powdered material. The perforated film has at least one layer made from a composition which contains at least one thermoplastic polymer, where at least one layer has perforations whose dimensions are less than or equal to 90 micrometres (mcm), and the ratio of the total perforated area to the total area of the surface of the film is between 400000 and 2000000 square micrometres per square inch of the film ((mcm)2/(inch)2) (62000 - 310000 ((mcm)2/(cm)2).
EFFECT: obtaining storage container made from said perforated film, having a combination of perforation dimensions and density of perforations, which enables efficient removal of air when filling the container with fine powder substances under pressure.
51 cl, 3 tbl, 5 dwg
FIELD: technological processes.
SUBSTANCE: invention relates to a method of forming a multilayer elastomeric laminate for clothes and a hygienic product, to a multilayer elastomeric laminate and an article made therefrom. The method involves the following: a) laminating an elastomeric film onto a first substrate to form a laminate web having an elastomeric film surface, where the elastomeric film contains an elastomeric polymer selected from a group consisting of block copolymers of vinyl arylene and conjugated diene monomers, natural rubber, polyurethane rubber, polyester rubber, elastomeric polyolefins, elastomeric polyamides and mixtures thereof, and the first substrate is made from a polymer film, non-woven fabric, a paper article, woven fabric, knitted fabric, scrim, netting or a combination thereof; b) slitting the laminate web to form laminate strips; and c) bonding the surface of the elastomeric film of at least one laminate strip with a second substrate having a width greater than the width of the laminate strip to form a multilayer elastomeric laminate, where the second substrate is made from a polymer film, non-woven fabric, a paper article, woven fabric, knitted fabric, scrim, netting or a combination thereof.
EFFECT: efficient manufacturing of an elastomeric film having good elastomeric properties and good-looking surface structure after activation, which can be rolled and stored without monitoring.
20 cl, 6 dwg
SUBSTANCE: there is disclosed three-dimensional apertured film containing the first plane surface in the first default plane, the second plane surface in the second default plane and a set of apertures passing between the first and second surfaces. The three-dimensional apertured film also comprises at least one element that overlaps each set of apertures to form thereby a set of smaller apertures. The element overlapping each aperture has an upper face arranged below the first default plane.
EFFECT: three-dimensional apertured film has improved properties in processing the fluid when used in disposable absorbing products.
57 cl, 11 dwg, 1 tbl
FIELD: aircraft industry.
SUBSTANCE: layered panel comprises at least two interconnected stacks of metallic layers and plastic layers reinforced with fibers. The stacks have intermediate section `at which at least one of the internal layers is discontinuous. All other layers including outer metallic layers are continuous. Within the material, one stack of layered composition is smoothly goes into the other without onset of stress concentration.
EFFECT: enhanced strength.
14 cl, 7 dwg
FIELD: chemical industry; other industries; methods and the heads for production of the laminate with the lengthwise-transversal orientation of the layers made out of the oriented films.
SUBSTANCE: the invention presents the laminate with the lengthwise-transversal orientation of the layers formed out of the films, from which at least two of them have mono-axial or unbalanced two-axial orientation, in which the main direction of the orientation in one of these films intersects the main direction of the orientation in other film and have the modifications of the surface properties executed in the certain tracery of these two films on those their surfaces, which are disposed inside the laminate and are connected with each other. The surface layers of the films located inside contain the set of filaments made out of the material produced by the joint extrusion, and are located so, that these two sets on two films intersect each other. The filaments may by used for control over the adhesion between the films and for reduction of the trend to delamination at the multiple bending. It allows to use the laminate in the capacity of the canvas cloth. In the combination with creation of the relief at least on one film, the main layer of which is made transparent for formation of the strips. At that the colored filaments attach the attractive visual effects to the laminate. The visual effect makes the laminate to look more heavy-gage.
EFFECT: the invention ensures, that the filaments used in the laminate may by used for control over the adhesion between the films, for reduction of the trend to delamination at the multiple bending allowing to use the laminate as the canvas cloth and the colored filaments attach the attractive visual effects to the laminate.
58 cl, 7 dwg, 3 ex
FIELD: laminated fire-proof materials.
SUBSTANCE: method involves applying fire-retarding material on tissue web to create the first discrete layer, wherein the fire-retarding material is based on emulsified polyvinylchloride; placing the second tissue web on the first one; covering the second tissue web with the same fire-retarding material to form the second discrete layer; arranging the third tissue web on the second one and simultaneously hardening the first and the second discrete layers.
EFFECT: increased thermal protection, fire-resistance, improved protection against poisonous agents and increased labor productivity.
FIELD: fire-resistant materials.
SUBSTANCE: invention relates to fabricating fire-resistant material suitable to make filter-type individual respiratory defense systems. Material contains textile sheet with, applied thereon, emulsion polyvinylchloride-based fire-retardant composition in the form of discrete layer. Material additionally has, on its reverse side, (i) a sorption layer constituted mainly by carbon-containing material with, applied on its both sides or on the side being in front of facing layer, discrete coating based on polyvinylchloride containing fire retardants, and (ii) reverse layer containing woven or unwoven material made from cotton, viscose, synthetic fibers or mixtures thereof.
EFFECT: acquired high fire-resistant and heat-resistant properties with high air permeability and thereby defense against poisons preserved.
2 cl, 2 dwg, 1 tbl, 2 ex