A method of making sandwich structures

 

(57) Abstract:

Usage: the technology of layered materials for insulation against heat, sound or mechanical and mainly used in construction, as well as in the clothing industry. The method is carried out by applying on both sides of the strip of blanks 1 placeholder transverse adhesive strips 2, having them in places suspected peaks of the corrugation increments than required step of the corrugation. On the blanks 1 lay parallel adhesive strips 2 sided fold with depth B, equal to half the difference of step T of the adhesive strips and pitch of the corrugation, with the adhesive strip on the outside of the folds. The workpiece 1 with pleats placed between the casings 3 and 4 are parallel to one another at intervals and connect with them in places glue strips 2. Then sheathing 3 and 4 are bred by shifting one relative to the other in the opposite direction to the adjacent bends 5 folds, taking the offset is equal to the depth of the folds and subjected to fixation of the obtained three-layer design. 1 C.p. f-crystals, 5 Il.

The invention relates to the technology of three-layer construction designed dei, as well as laminated materials for the garment industry.

A known method of making sandwich structures, including the application of parallel adhesive strips on the inner surface coverings in places suspected peaks of the corrugation filler with a step equal to the desired step of the corrugation filler, adhesive bonding coverings placed between sheet preparation, dilution plating at a distance equal to the desired thickness of the filler, while giving the sheet blank corrugated shape due to its extraction and subsequent fixation of the derived form (1).

A three-layer structure obtained in a known manner, have low flexibility due to the presence of the longitudinal ribs and the necessity of using hard structures with low filtration properties and increased weight due to the formation of the filler channels in one direction only, as well as reduced strength caused considerable stretching of the workpiece. The known method is also characterized by high complexity of manufacturing.

Closest to the invention is a method of making sandwich structures, including the application of both the required step of the corrugation, laying on the placeholder parallel adhesive strips unilateral creases with depth equal to half the difference of step adhesive strips and pitch of the corrugation, with adhesive strip outer sides of the folds, adhesive bonding filler with coverings, breeding coverings by shifting one relative to the other in the opposite direction to the adjacent folds of the pleats, an amount equal to the depth of the folds, and fixing corrugated shape of the filler (2).

The known method provides high strength sandwich structures and allows you to use as linings flexible materials, however, formed from sheet stock corrugated filler contains longitudinal ribs, which reduces the flexibility of sandwich structures. In addition, the use as a filler sheet determines the presence of the filler nesoobschaemost channels arranged in one direction, which reduces the filtration properties and increases the weight of the sandwich structures.

The aim of the invention is the simultaneous increase flexibility and filtration properties and low weight while retaining strength of sandwich structures.

On Esenia on both sides of the filler, the adhesive strips in places suspected peaks of the corrugation increments, exceeding the desired corrugation step, laying on the placeholder parallel adhesive strips unilateral creases with depth equal to half the difference of step adhesive strips and pitch of the corrugation, with the adhesive strip on the outside of the folds, adhesive bonding filler with coverings, breeding coverings by shifting one relative to the other in the opposite direction to the adjacent folds of the pleats, an amount equal to the depth of the folds, and fixing corrugated shape of the filler, the filler is carried out in a separate strip of blanks, arranged at intervals in parallel to each other, and the adhesive strip and one-sided folds come across pieces. Strip harvesting placeholder stack also with the location of the one-sided folds with adhesive strips in a staggered manner in the plane of the casings.

Declare a set of distinctive features is the implementation of aggregate placed at intervals in parallel to each other flat workpieces at the location of the adhesive strips and one-sided folds across the workpiece, and stacking blanks with the location of the one-sided folds with adhesive strips in a staggered manner in ploskoye. Thus, in the known technical solution with partially similar features are unilateral folds lay the sheet blank (2). The resulting three-layer structures are characterized by satisfactory strength, but have poor flexibility, poor filtration properties and increased weight.

Also known technical solutions, according to which the filler is carried out in a laid end-to-end parallel to one another and United by transverse strips strip blanks, no folds, and the connection of the filler with casings carried out after giving preparations corrugated shape by cutting transverse strips and extension package (ABT.St. USSR N 1094932, class E 04 2/24, 1984; ed.St. USSR N 1294940, class E 04 1/78, 1987). This improves flexibility and filtration properties of sandwich structures, however, increases their mass and reduces the strength by reducing the resistance to compression of the filler and the strength of the coupling of the casings.

The performance of aggregate placed at intervals in parallel to each other flat workpieces at the location of the adhesive strips and one-sided folds across the workpiece, and stacking blanks with R is to receive the design, the filler which is made in the form of parallel corrugated strips firmly connected to the casing and having a high resistance to compressive loads, which ensures high strength of sandwich structures. The presence of the spacing strip blanks helps to enhance the flexibility of designs in different directions and provides education in the placeholder communicating branched channels, which improves the filtration properties and reduces the weight of the sandwich structures.

These advantages allow us to expand the scope of the functional application of sandwich structures, in particular as a flexible lightweight panels, which allow ventilation of the interior space, for example, to remove condensate, to maintain a constant temperature, as well as multi-layer bags for garment industry.

In Fig.1 shows a strip stocking filler with adhesive strips; Fig.2 - United with edging strip workpiece with its one-sided folds; Fig.3 - the same, with divorced casings; Fig. 4 - United with edging strip blanks with one-sided folds, raspolozhennymi as follows.

On both sides of the strip of blanks 1 wide and is applied parallel adhesive strips 2, having them across the billet in the locations of the alleged tops of the corrugation (Fig. 1). Step T glue strips take more required step t of the peaks of the corrugation and choose depending on the value of t and the thickness H of the filler. The width b of the adhesive strips 2 is equal to the desired width of the peaks of the corrugation. Then on the blanks 1 lay parallel adhesive strips 2-sided folds, with glue strips on their outer sides (Fig.2). The depth of the folds is determined by the ratio:

In = (T - t)/2. (1)

Strip blanks with laid on them by the folds are placed between the casings 3 and 4, stacking the blanks with the interval d in parallel to each other, and connected by hot pressing in places glue strips (Fig.2). The breeding of the casings 3 and 4 carried by the longitudinal displacement one relative to the other in the opposite direction to the adjacent bends 5 folds (Fig.2), assuming the offset is equal to the depth of the folds (Fig.3). When this happens straightening laid in folds plots strip blanks, which are corrugated form with sogatella processing for fixing the shape of the fill.

Placed between the casings 3 and 4 of the passband of the workpiece 1 with the location of the one-sided folds with adhesive strips 2 in a checkerboard pattern in the plane of the casings (Fig.4). After the adhesive bonding of workpieces with skins and their cultivation receive a three-layer structure with a filler in the form of corrugated strips, the tops of the corrugation which are staggered in the plane of the sandwich structures (Fig.5).

As the strip of blanks filler sandwich structures using a wide range of flexible sheet materials, such as fabric and knitted fabrics of various fibrous composition, in particular on the basis of optical fibers, and nonwoven and film materials, flexible cellular plastics. A covering made of a lightweight plastic sheets, and flexible sheet materials, such as fabrics, knitted fabrics, non-woven film and paintings. For applying adhesive strips applied various adhesive materials depending on the materials, coverings and blanks placeholder.

Planting of wrinkles on the strip blanks placeholder carried out mechanically by means of the mechanisms used in plessirovannoy equipment note the new equipment or calenders.

Fixing the form sandwich structures can be carried out by impregnation of the binder with its subsequent hardening by heat treatment. When used as blanks of thermoplastic materials (e.g., fabrics made of synthetic fibers, film, paintings, cellular plastics) fixation can be carried out thermally by transferring the material in a highly elastic state, followed by the transition when cooled.

The proposed three-layer structure can be obtained in the form of separate panels contour or continuous manner in the form of laminated canvas.

P R I m m e R. Fabricate three-layer design that is used as insulation panels. On both sides of the strip of blanks filler of width a = 30 mm fiberglass is applied strip epoxy adhesive coating width b = 10 mm with step of T = 90 mm On the blanks lay-sided fold width = 20 mm, with adhesive strips on their outer sides. Then strip the workpiece from the folds is placed between the plates of glass parallel to one another with an interval of d = 30 mm and connect with them by hot pressing using calenders, heated to reisling structure is impregnated with the epoxy compound and subjected to heating to a temperature of 160aboutFor curing the binder. The result is a three-layer structure with a corrugated filler having the following geometrical parameters: step corrugation t = 50 mm, the width of the peaks of the corrugation b = 10 mm, thickness H = 32 mm, the distance between the corrugated strips d = 30 mm

The obtained three-layer structure has a higher flexibility in comparison with the prototype, as characterized by the ability to bend in different directions. Three-layer design has a higher filtration properties due to the presence of the filler communicating branched channels. The mass of the filler obtained three-layer structure is lower in comparison with the prototype by 50%. The obtained structure is characterized by significant compression resistance and high bonding strength of the filler with the paneling.

The proposed method can improve the quality of the three-layered insulating structures reduces their weight, material consumption and cost. The method does not require the use of complex equipment, it is easy mechanization and automation, creates prerequisites for processing a strip of waste sheet materials.

1. WAY of the hundred of required peaks of the corrugations increments, exceeding the required step of corrugations, laying on the placeholder parallel adhesive strips one-sided folds a depth equal to half the difference of the step adhesive strips and pitch of the corrugations, with the adhesive strip on the outside of the folds, adhesive bonding filler with coverings, breeding coverings by shifting one relative to the other in the opposite direction to the adjacent folds of the pleats, an amount equal to the depth of the folds, and fixing corrugated shape of the filler, characterized in that as aggregate use strip harvesting, arranged at intervals in parallel to each other, and the adhesive strip and one-sided folds come across pieces.

2. The method according to p. 1, characterized in that the bandpass billet filler is placed with the location of the one-sided folds with adhesive strips in a staggered manner in the plane of the casings.

 

Same patents:

Concrete panel // 2001217

FIELD: fire-resistant materials.

SUBSTANCE: invention relates to fabricating fire-resistant material suitable to make filter-type individual respiratory defense systems. Material contains base in the form of cloth with, applied on one of its sides, discrete fire-retardant emulsion polyvinylchloride-based coating. Material additionally contains similar coating applied on its other side and, situated on its opposite sides, facing cotton/ester textile layer and reverse cotton textile layer. Base cloth consists of carbon-containing material.

EFFECT: enhanced fire-resistant and heat-resistant properties with high air permeability and thereby defense against poisons preserved.

1 dwg, 1 tbl

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

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.

1 tbl

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

Layered panel // 2323092

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: medicine.

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: 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

FIELD: chemistry.

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: chemistry.

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

FIELD: process engineering.

SUBSTANCE: this invention relates to non-sticking multilayer elastomer film and to method of its production. Proposed film comprises first fragile polymer film layer that may not expand to over 110% of its initial size without breakage or cracking, and second elastomer layer. Said first layer is bonded with first surface of said second elastomer layer. First layer represents polystyrene while second layer is selected from the group comprising block-copolymer of styrene and elastomer of polyolefin. Multilayer may be activated by breaking first fragile polymer layer and imparting elastoplasticity to multilayer film. Film layer that may expand to approx. 150% of its initial size and recover after expansion to not over 120% of its initial size. Proposed method comprises producing non-sticking multilayer film layer and activating non-sticking multilayer film with destruction of fragile polymer film layer along with imparting elastoplasticity to multilayer film.

EFFECT: possibility to roll elastomer film and store without its sticking.

19 cl, 8 dwg, 2 ex

FIELD: aircraft industry; production of different partitions used for airplane cabins inner lining.

SUBSTANCE: the invention is dealt with aircraft industry, in particular, with production of different partitions used for airplane cabins inner lining. The cellular panel represents a material with the layers of the upper and lower layers of lining and the filler. The upper and bottom layers of lining are made out of material named Organit 7ТЛ-Б(0)-2-Ш. The filler is manufactures out of a high heat-resistant paper Phenylon БФСК, between them there is an adhesive film ВК-46. The butts of the cellular panel are filled with a paste ВПЗ-1-55 to prevent penetration of moisture into the filler. The given design of the cellular panel ensures an increase of a pressure density of the panel and a number of points to fix the fittings and the fastening elements on the panel perimeter.

EFFECT: the design of the cellular panel ensures an increase of a pressure density of the panel and a number of points to fix the fittings and the fastening elements.

2 dwg, 2 tbl

FIELD: building elements of relatively thin form for the construction of parts of buildings, for instance sheet materials, slabs, or panels.

SUBSTANCE: production method for honeycomb panel used for building finishing from inside and outside during construction involves cutting stainless steel sheets into separate plates; arranging solder sheets covered with fluxing agent from both sides thereof on stainless steel plate surfaces; installing one plate at press top; installing another plate at press bottom; locating filler made as stainless steel honeycomb structure between solder sheets; heating the assembly within temperature range of 200-300°C along with soldering thereof. Press with internal heaters is used to produce above panel. Plates and honeycomb structure are formed of the same stainless steel.

EFFECT: prevention of heat panel deformation, possibility to obtain decorative panels having improved appearance and smoothness, increased panel strength and corrosion resistance.

5 dwg, 1 ex

FIELD: building members, particularly heat-insulated building unit used as filler structures, facings and building structures.

SUBSTANCE: heat-insulated building member comprises outer layers, metal foil screen layers, cellular packing layers made of bent paper strips and adhered one to another. Cells of one packing layer are displaced with respect to that of another packing layer. Outer layers are made of metal foil and are used as screens and load-bearing layers. Cellular packing layers are connected with each other by means of flat paper sheets. Planes of adjacent packing layer connection areas are turned one relative another through angle equal or less than 90°. Packing layer thickness, namely cell height, and cell dimensions are reduced towards outer layers. Flat paper sheet thickness increases towards outer layers. Packing layer cells adjoining outer load-bearing layer facing heat-dissipation surface are filled with foaming composition. The foaming composition includes components, which sublimate under the action of high temperature with water vapor or carbonic oxide gas emission. Adjacent packing layers adjoining opposite outer load-bearing layers are filled with ecologically-safe cotton wool. Ratio between flat paper sheets and packing layer thickness (cell height) is 1:1 - 1:250. Ratio between cell height and cell face dimensions is 1:2-1:5. Ratio between bent paper strip thickness used for cell production and packing layer thickness (cell height) is 1:50-1:300. Ratio between mean packing layer thickness (mean 9-th cell height) and heat-insulation layer thickness is 1:2-1:60.

EFFECT: increased load-bearing capacity, strength and fire-resistance along with retention of good heat-insulation properties.

5 cl, 2 dwg

FIELD: construction.

SUBSTANCE: assembly construction element in the form of beam, comprising shelf and two walls, differs by the fact that shelf has one wall at each of its two longitudinal sides, besides each wall is attached to one longitudinal side wall of shelf preferably with the help of adhesive substance, and by the fact that end zones of shelf inverted from shelf are flatly connected to each other by surfaces facing each other, preferably with the help of adhesive substance, besides walls in their cross sections have shape of "extended S".

EFFECT: development of efficient construction element in the form of beam.

25 cl, 16 dwg

FIELD: construction.

SUBSTANCE: invention relates to construction, specifically to a method for construction of energy-efficient, environmentally safe structures. Task is solved by construction of energy-efficient, environmentally safe structures of prefabricated structures in form of modular assembly elements, through which structures are mounted on a base, prefabricated panels are used to build wall structures, floors, covers and attached to each other, and modular prefabricated elements are made from light steel components and panel sheet, frame structure of light steel components is made of C-shaped profile and on each modular collecting element sheet material is fixed on both sides, with symmetric shift outward by no more than ½ width of C-shaped profile.

EFFECT: technical task of present invention is a method for construction of an environmentally friendly structure, which would allow reducing range of manufactured and components, create a unified modular elements, due to application of which reduce consumption of sheet material wastes and increases labour efficiency, specifically creating unified modular elements for walls, floors, covers, roof, from which would be possible construction of different buildings and structures, both low-rise and high-rise residential and industrial buildings.

5 cl, 9 dwg

Up!