A method of obtaining a duplicate roll of binding material paper-based polyamide coating
(57) Abstract:The invention consists in obtaining duplicate roll of binding material by applying a melt of the polymer copolyamid the characteristic viscosity at t = 35C = [0,6-1,3] DL/g and is characterized by only one endothermic peak at t = 150 - 230oC or melt of the above copolymer with functional additives in the ratio of 100:(0,03 - 5), respectively, and the melting is carried out in the extruder at t = 180 - 245othe duplication of the melt with the paper carried out at a temperature of the backup roll 15 - 60oC and a pressure of 3 to 170 kg/cm and the distance from the head of the extruder to the surface of the shaft duplicate, equal to 6 - 90 see Method allows you to get the duplicate roll of binding material paper-based polyamide coating with a thickness of 10 to 50 μm. 2 C.p. f-crystals, 1 table. The invention relates to the field of production of duplicate materials based on paper with a polymer coating and can be used in the manufacture of coil binding materials.Currently known methods for producing duplicate binding materials paper-based polyclinic films.The production of a binding material with a nitrocellulose coating on the paper involves the preparation of the soil, consisting of micromastia, plasticizers, pigments, fillers, solvents, multiple layering on paper (Gagarinskaya L. A. and other Printing material. -M. : publishing house of the Book, 1975).The disadvantages of this method of obtaining duplicate binding material is a multi-stage process, the use of solvents, a pair of which are in the room and the atmosphere, a significant number of initial components, difficult working conditions.Recently in the domestic printing industry are used Bindery materials based on paper with a coating of polymer films. There is a method of duplicating paper with a polyethylene terephthalate film by means of adhesive layer, and a polyamide film, laminated with polyethylene.This technology involves the production of films by extrusion lines blown, annealing the film, application of the adhesive layer or polyethylene, duplication of paper on the roll the equipment.The disadvantages of these methods of obtaining Dublino the internal layers to promote adhesion to paper, the multistage process of obtaining, the disruption process, the considerable thickness of polymer coating (80-120 µm), which increases the intensity of products.The closest analogue of the invention is a method of obtaining a binding material on a paper basis with PVC coating (see the book Zagarenski L. A., S. 280-281). This method of obtaining a binding material is a mixture of a polymer or a polymer with functional additives (plasticizers, stabilizers, fillers, pigments), which is a polymeric composition, the melting of the polymer mass, the polymer coating of the mixture on a paper basis is carried out on a 4-roller calender. This method does not allow to obtain a material with a thickness of less than 50 microns. Additionally, upon receipt of the material PVC is allocated HCl and a pair of plasticizers, which requires their recovery.Task to be solved by the claimed invention is directed, is getting duplicated coil binding material paper-based polyamide coating with a thickness of 10 to 50 μm.The technical result is achieved by the fact that during the implementation of the decision of the polymer or polymer composition, application of polymer melt onto the paper with subsequent duplication and embossed Volkov equipment, as polymer is used copolyamide the characteristic viscosity at 35oC = [0,6-1,3] DL/g and is characterized by only one endothermic peak pri-230oC or melt polymer composition comprising the above copolyamide and functional additives in the ratio of 100 : (0,03-5), respectively, and the melting is carried out in the extruder at a temperature of head 180-245oC and the distance from head to paper, equal 6-90 cm, duplication melt paper is carried out at a temperature of backup rolls 15-60oC and the pressure 3-170 kg/cm2.Direct application of the melt copolyamid or copolyamid composition allows not only to reduce the consumption of scarce foaming agent, but also reduces the number of technological operations, improves the environment, i.e. in the production of material, no harmful substances, allows to obtain materials with thickness of polymer coating 10-50 μm. This coating provides functional requirements for bookbinding material (high resistance to abrasion, Ocenia binding material in comparison with the known methods of reducing energy consumption, improves performance.As the main component in the present invention used:
polyamide 6/66-4, synthesized on the basis of salts of AG (salt of adipic acid and a diamine and caprolactam in the ratio of SG Sol : caprolactam = 40 : 60; OST 6-03-438-88,
polyamide 6/66/610, synthesized on the basis of salts of AG (salt sabatinovka acid and diamine), salts of AG and caprolactam in the ratio of salt hypertension : salt CR : caprolactam = 37 : 19 : 44; OST 6-03-438-88,
glycerin GOST 6259-75,
epoxide - monoglyceride esters of polyethylene glycol with a molecular weight of 350-700, THE 6-55-221-979-90; THE 6-55-1082-89 NGOs "Polymersintez" , Vladimir,
deafen H-H-di-naphthyl-p-phenylenediamine (JSC "Khimprom", , Zavolzhsk, Ivanovo oblast),
tinuvin P - derived benzotriazole (NAIMPALLY, , Tambov).New stabilizer - dual chelate desolate connection Cu-Ca-dimethylformamide was obtained according to the method described in applications EN 94062409 AI, 20.06.96 and EN 94032410 AI 10.07.96., 0.67 mol CaCl2(GOST 4465-87), of 0.65 mol CuCl2H2O suspended in 800 ml of dimethylformamide. The mixture was heated at 70oC for 2 h in a water bath. The resulting solution was yellow or orange were placed in a DVD player>To implement the claimed invention used polyamide certain molecular weight, which is indirectly assessed by the characteristic solution viscosity of the polyamide in m-cresol. Beyond a given characteristic viscosity is not possible to achieve a positive result.The criterion of thermal stability of polymers is the melting temperature, the temperature of maximum degradation rate, mass loss (see Wagner, O. I., Freiman Y. C. Study the kinetics of thermal decomposition of polymeric materials by gravimetric analysis// Engineering physical journal. - 1984,, 40, N 2, -c.278).Processing and exploitation of polymers followed by their destruction, leading, in particular, to changes in the molecular mass distribution.To characterize the molecular mass distribution of the polyamide was adopted indirect method for determining the interval of melting of the polymer. The wider the range of the melting point, the wider the molecular weight distribution. The melting interval of the selected polyamide 150-230oC.The table below shows the polymer coating formulation and physico-mechanical parameters obtained oak the face) was performed in the extruder at a temperature of slotted heads 1932oC, duplicating paper was carried out at a temperature mounting rolls 303oC, a pressure of 15 kg/cm2and the distance between the head of the extruder and mounting rollers 30 cmMelting of the polymer from example 2 were carried out in the extruder at a temperature slotted head 2432oC, duplicating paper was carried out at a temperature mounting rolls 60 3oC, a pressure of 45 kg/cm2and the distance between the head of the extruder and mounting rollers 30 cmTechnological difficulties in obtaining material for the above modes was observed.Example 6.Melting composition composition specified in the table (example 6) was carried out at 932oC, duplicating paper was carried out at a temperature mounting rolls 302oC, a pressure of 170 kg/cm2and the distance between the head of the extruder and mounting rollers 90 cmExample 7.The melting of the polymer composition according to example 7 were carried out in the extruder at a temperature slotted head 1822oC, duplicating paper was carried out at a temperature mounting rollers 172oC, a pressure of 3 kg/cm and the distance between the head of the extruder and mounting walkability), conducted in 1932oC, duplication of polymer melt paper was carried out at 65oC, a pressure of 10 kg/cm2and the distance between the head of the extruder and the backup rollers 30 cmWhen duplication was observed sticking of the polymer to the backup rolls and the striping of the coating from the paper. Physico-mechanical properties were not determined.Example 16.Melting composition composition specified in the table in example 5 (see table), was carried out as in example 15. Duplication of polymer coating was carried out at a temperature mounting rolls 302oC, a pressure of 2 kg/cm2and the distance between the head of the extruder and the backup rollers 30 cmWhen the above-mentioned modes of duplication was observed uneven adhesion of polymer coatings to paper, peeling of the coating in some places from the paper. Physico-mechanical parameters of the material was not determined.Example 17.Melting composition composition specified in the table, example 5 was carried out at 1932oC, duplication of polymer coating was carried out at the temperature of the rolls 302oC, a pressure of 100 kg/cm2and the distance between the head of the extruder and mounting rollers 95 see
FIELD: laminated material for manufacture of packaging containers by folding and thermal sealing and packaging containers for liquid food products manufactured from said material.
SUBSTANCE: packaging material 10 has central layer 11 of paper or cardboard and layer 12 of polyolefin with mineral filler on one side of central layer. Layer 12 with mineral filler has thickness of from 30 micron to 100 micron and has mineral particles in an amount of from 40% to 70% by weight of layer 12 with mineral filler. Both sides of central layer are provided with water-impermeable coating of polyolefin.
EFFECT: increased rigidity and provision for manufacture of containers with improved capturing properties.
8 cl, 4 dwg
FIELD: food industry; packages.
SUBSTANCE: invention relates to laminated material designed for use in packages and featuring low absorbing action. Proposed material consists of skeleton layer made of paper or cardboard, outer polymeric coating applied to one side of skeleton layer and combination of layers arranged on opposite side of skeleton layer. Said combination includes first barrier layer in contact with skeleton layer, first binding layer in contact with first barrier layer, second barrier layer in contact with first binding layer, second binding layer in contact with second barrier layer and inner polymeric coating in contact with second binding layer, being essentially surface in contact with food product. First and second barrier layer are formed mixture of aromatic polyamide resin and polyamide 6. First and second binding layers are formed of modified polyethylene or other polyolefin. Invention provides description of package made of such laminate.
EFFECT: improved structural and mechanical stability of material and articles made of such material, simplified technology of production of material and reduced cost of production.
14 cl, 2 dwg
FIELD: pulp-and-paper industry; methods of production of the laminated paper of the high density and the high oxygen permeability.
SUBSTANCE: the invention is pertaining to the field of the pulp-and-paper industry, in particular, to the barrier substance and the method of its realization. The method allows to produce the laminate of the paper coated with the polyolefin, at that the paper is manufactured out of the wet fibrous mass, which is not enabled to dry before manufacture of the paper, and before the polyolefin application on the paper - the paper is modified in such a manner that its surface energy has changed approximately up to the value equal to the surface energy value of the polyolefin. The presented method ensures the manufacture of the barrier substance with the stable quality and the good barrier properties with respect to the gas and may be used for packaging, in particular, for the food products.
EFFECT: the invention ensures the manufacture of the barrier substance with the stable quality and the good barrier properties with respect to the gas and may be used for packaging, in particular, for the food products.
12 cl, 5 dwg, 4 tbl, 3 ex
FIELD: construction materials industry; other industries; production of the plates produced by the direct lamination.
SUBSTANCE: the invention presents the plate of the direct lamination. The purpose of the invention is creation of the plate of the direct lamination, so that in it the graphics image of the relief shall correspond to the relief reconstruction of its surface. At that it is possible to use the hot pressure moderate for the decorative layer. The plate is manufactured by the method of the hot pressing of the core with the resin-saturated absorbing layers including the surface with one decorative layer containing the graphics image of the surface of the imitated material. The plate also contains the deposited on the decorative layer transparent covering layer with the relief reconstitution of the surface structure of the imitated material. Between the decorative layer and the core there is the intermediate resin-containing layer made in the form of the prefabricated separate adhesive layer with the saturating resin. The given version has the technological advantages at manufacture of the plates of the big dimensions, and also allows to manufacture the plates having the structured surfaces, at that the structure precisely coincides with the graphics image of the below located decorative layer.
EFFECT: the invention ensures creation of the plate of the direct lamination, which graphics image of the relief precisely corresponds to the relief reconstruction of its surface and the given version has the technological advantages at manufacture of the plates of the big dimensions.
3 cl, 2 dwg
FIELD: packing means, particularly containers.
SUBSTANCE: laminated material 30 comprises rigid bendable substrate 31 made of paper or cardboard, external water-tight coverings 32, 33 and aluminum gas-barrier foil 34 located between substrate 31 and one external covering 32. Laminated material comprises at least one additional layer 35 used as gas-barrier between substrate 31 and aluminum foil 34. Additional layer 35 is connected to substrate 31 through intermediate or adhesive layer 36. External coverings 32, 33 and intermediate or adhesive layer 36 are made of polypropylene. Packing container and product packing method with the use of the container are also disclosed.
EFFECT: possibility to prevent or compensate container gas losses through aluminum foil cracks or similar tightness failure caused by stresses, especially by ones appearing during container production of described packing material.
12 cl, 3 dwg
FIELD: chemical industry; light industry; other industries; production of the caps for the packing tare sealing.
SUBSTANCE: the invention is pertaining to production of the caps used for the packing tare sealing. The cap is made with the capability of its fixation by means of the thermal welding to the opening of the hermetic bowl and the subsequent its opening. At that the cap contains the layer of the fibrous material, the polymeric layer, the barrier layer concerning the oxygen and the polymeric thermosealing layer. At that the thermosealing layer contains: the copolymer of ethylene and methylacrylate, the copolymer of ethylene and vinylacetate and the polyamide wax. The thermosealing layer is fixed directly on the barrier layer in relation to the oxygen layer having the more higher fusion point - all without any intermediate binding agents. The presented invention also concerns to the method of manufacture of the cap, and also the hermetic bowl supplied with the above-mentioned cap, and to the method of manufacture of the above- mentioned bowl. The invention ensures manufacture of the cap attached by the thermal method and easily opened, besides, the given cap may be manufactured by extrusion within the limits of one operation, and also to diminish the number of the polymeric layers applied one over another.
EFFECT: the invention ensures manufacture of the cap attached by the thermal method and easily opened, besides, the given cap may be manufactured by extrusion within the limits of one operation, and to diminish the number of the polymeric layers applied one over another.
17 cl, 5 dwg, 3 ex
FIELD: technological processes.
SUBSTANCE: invention is related to technology for production of biodegradable flaky paper-based materials, in particular to containers for liquid or hard, hot or cooled food products. Biodegradable flaky material contains paper base, having the first and second layers of polyethers applied at least on single surface of base. Intermediate layers of polymers between surface of base and copolyethers applied on base surface are actually unavailable. Copolyethers of both layers are non-identical products of copolymerisation of benzol-1,4-dicarboxylic acid with aliphatic diatomic spirit and at least one reagent selected from group including aliphatic dicarboxylic acid, cyclic diatomic spirit, aromatic diatomic spirit.
EFFECT: production of moulded product with improved technical characteristics resistant to damage and softening.
27 cl, 4 dwg, 1 ex
SUBSTANCE: packet, which is assembled from a layer of barrier paper, layers of power paper impregnated with resin, intermediate layer of paper with high content of resin - 60÷75%, decorative layer of paper that is not impregnated with resin with decorative pattern and coating from earlier hardened resin is continuously pressed only on one side at the pressure of 15÷35 bar, temperature of 170÷200°C, speed of pressing 4÷20 m/min. On completion of pressing subsequent completing operations are performed, which include cooling and cutting of edges.
EFFECT: production of object with high characteristics of surface glossiness with higher light refraction, increased resistance to wear, to action of water and chemical reagents.
FIELD: process engineering.
SUBSTANCE: invention relates to multilayer substrate 60 and method to produce a counterfeit-protected paper. Proposed substrate consists of the first paper interlayer (10, 202) with density varying from 10 to 80 g/m2 and second paper interlayer (20, 214) with density varying from 10 to 80 g/m2, and one layer of plastic made from thermosetting polymer materials arranged between aforesaid interlayers (10, 20, 202, 214) and bound therewith. Proposed method consists in that plastic layer, as-melted, is introduced between said paper interlayers (10, 20, 202, 214) for them to be squeezed between two rolls (50) in continuous process. Said two rolls 50 are kept at temperature exceeding room temperature but lower than that plastic material melt. Paper interlayers and plastic layer are bound together due to atomic-molecular forces between said layers to produce penetration zone wherein plastic layers are bound with fibrous material of aforesaid interlayers (10, 20, 202, 214). Plastic layer density varies from 22 to 80 g/m2.
EFFECT: better counterfeit protection, longer life.
38 cl, 5 ex, 3 tbl, 4 dwg