CN111197264B - PVC artificial leather with support - Google Patents
PVC artificial leather with support Download PDFInfo
- Publication number
- CN111197264B CN111197264B CN201811364511.6A CN201811364511A CN111197264B CN 111197264 B CN111197264 B CN 111197264B CN 201811364511 A CN201811364511 A CN 201811364511A CN 111197264 B CN111197264 B CN 111197264B
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- pvc
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- compact
- artificial leather
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- 239000002649 leather substitute Substances 0.000 title claims abstract description 73
- 239000010410 layer Substances 0.000 claims abstract description 170
- 239000012790 adhesive layer Substances 0.000 claims abstract description 43
- 239000004744 fabric Substances 0.000 claims abstract description 36
- 239000006260 foam Substances 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000005187 foaming Methods 0.000 claims description 46
- 239000011248 coating agent Substances 0.000 claims description 30
- 238000000576 coating method Methods 0.000 claims description 30
- 229920000742 Cotton Polymers 0.000 claims description 23
- 239000000654 additive Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 239000004014 plasticizer Substances 0.000 claims description 15
- 229920000728 polyester Polymers 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 239000002270 dispersing agent Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims description 2
- 238000007606 doctor blade method Methods 0.000 claims description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 2
- 239000003063 flame retardant Substances 0.000 claims description 2
- 239000010985 leather Substances 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 238000007761 roller coating Methods 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 7
- 239000004800 polyvinyl chloride Substances 0.000 description 147
- 229920000915 polyvinyl chloride Polymers 0.000 description 147
- 239000006072 paste Substances 0.000 description 19
- 238000005452 bending Methods 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 5
- -1 i.e. Substances 0.000 description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000008094 contradictory effect Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000004156 Azodicarbonamide Substances 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 2
- 235000019399 azodicarbonamide Nutrition 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004260 weight control Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000008037 PVC plasticizer Substances 0.000 description 1
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 description 1
- 150000001540 azides Chemical class 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000002666 chemical blowing agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0043—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by their foraminous structure; Characteristics of the foamed layer or of cellular layers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
- D06N3/0097—Release surface, e.g. separation sheets; Silicone papers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/263—Cars
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/28—Artificial leather
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2213/00—Others characteristics
- D06N2213/03—Fibrous web coated on one side with at least two layers of the same polymer type, e.g. two coatings of polyolefin
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
In the supported PVC artificial leather composed of the PVC compact layer, the PVC foam layer, the adhesive layer and the support layer in this order, the supported PVC artificial leather having high softness of hand feeling can be obtained by controlling the weights of the PVC compact layer, the PVC foam layer and the adhesive layer and the composition of the base cloth constituting the support layer, which has good abrasion resistance while having good flexibility, and can be made into soft and abrasion-resistant artificial leather products.
Description
Technical Field
The utility model relates to PVC (hereinafter also referred to as PVC) artificial leather with a support, in particular to ultra-soft PVC artificial leather with a support similar to PU material in hand feeling, and application thereof in automotive interior materials.
Background
Artificial leather is a plastic product with appearance and hand feeling similar to natural leather. Plastics commonly used to make artificial leather include PU, i.e., polyurethane, and PVC, i.e., polyvinylchloride. According to whether a support layer is provided in the structure thereof, the PVC-based artificial leather may be classified into unsupported PVC artificial leather (UEV) and supported PVC artificial leather (SEV), wherein the PVC artificial leather using its hand softness characteristic is generally supported PVC artificial leather, which is generally composed of a PVC compact layer, a PVC foam layer, an adhesive layer and a support layer such as a base cloth in this order, is inexpensive, has good VOC emission performance, but has a hand softness inferior to that of PU artificial leather, and is used for applications requiring soft hand such as car seat headrest, etc.
The softness of hand of artificial leather can be measured, for example, by bending stiffness, and can be measured, for example, by the general motor company standard GMW3390. In the present utility model, the bending rigidity is measured as shown in fig. 1 according to the following method: the artificial leather sample is placed on a platform with a 45-degree inclined surface, and is positioned between the horizontal part of the platform and a plate on the platform, so that the plate is horizontally smoothed out towards the 45-degree inclined surface at a specified speed in a cantilever beam-like manner, and the sample slides outwards along with the plate, and the free end is bent downwards until contacting the 45-degree inclined surface or bending by 45 degrees. The length of the curved portion of the test specimen, which is referred to as "tortuosity", is measured and can be used to characterize the softness of the hand of the test specimen, the greater the tortuosity, the lower the softness of the hand of the test specimen.
The bending degree of the conventional PU artificial leather and the PVC artificial leather with support can reach less than 70mm and 80-120mm. The curvature of the PVC artificial leather with the support can reach 70mm.
With the development of economy, people pay more attention to the comfort degree of the automotive interior artificial leather, and the artificial leather with softer hand feeling can certainly bring more comfortable sensory experience to customers. Thus, there is a need for a supported PVC artificial leather material having a PU-like feel and an automotive interior material prepared using the same.
CN202088607U discloses a high-elongation automotive interior fabric, which comprises a PVC compact layer, a PVC foaming layer and a PVC paste layer. The utility model does not relate to softness of hand.
CN102561051a discloses a synthetic leather for wiping, in which pet+cotton is used as a base fabric, on the basis of which synthetic leather is formed, and discloses that such synthetic leather has little damage to lenses when wiping the lenses. This application gives technical insight to the use of PET + cotton for the production of soft synthetic leather, but does not relate to the dense layer of PVC, the foamed layer of PVC and the adhesive layer, nor to the softness of hand.
Disclosure of Invention
The present inventors have found that in a supported PVC artificial leather composed of a PVC compact layer, a PVC foam layer, an adhesive layer and a support layer in this order, by controlling the weights of the PVC compact layer, the PVC foam layer and the adhesive layer and the composition of the base cloth constituting the support layer, a supported PVC artificial leather having high softness of hand can be obtained which has good abrasion resistance while having good flexibility, and can be made into a soft, abrasion-resistant artificial leather product.
Specifically, the utility model comprises a PVC artificial leather with support, which comprises a PVC compact layer, a PVC foaming layer, an adhesive layer and a support layer, wherein the weight of the PVC compact layer is 215g/m 2 To 255g/m 2 Preferably 220g/m 2 To 250g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The weight of the PVC foam layer is 215g/m 2 To 255g/m 2 Preferably 220g/m 2 To 250g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The weight of the adhesive layer was 65g/m 2 To 95g/m 2 Preferably 70g/m 2 To 90g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The base cloth forming the supporting layer is polyester-cotton blended fabric.
The supported PVC artificial leather of the present utility model may be further characterized in that the base fabric is a polyester-cotton blend fabric of 60% to 65% polyester and 40% to 35% cotton, preferably 65% polyester and 35% cotton.
The supported PVC artificial leather of the present utility model may be further characterized in that the base cloth is woven using a single-sided weave.
The utility model further comprises a method for preparing the supported PVC artificial leather, which comprises the following steps:
i) Weighing proper amounts of all materials forming the PVC compact layer, the PVC foaming layer and the bonding layer according to a formula respectively, and fully mixing to obtain PVC compact layer paste, PVC foaming layer paste and bonding layer paste;
ii) Coating step on release paper with roller or doctor bladei) The PVC compact layer paste formed in the step (a), then drying the coating of the paste, and then cooling the dried coating to form a PVC compact layer;
iii) In the stepii) Roller or doctor blade coating step for the dense layer of PVC formed in (C)i) The PVC foaming layer paste formed in the step (a), then drying the coating layer of the paste, foaming the formed coating layer, and then cooling the dried coating layer to form a PVC foaming layer;
iv) In the stepiii) Coating step on PVC foaming layer formed in (2)i) Forming an adhesive layer from the adhesive layer paste formed in (a);
v) In the stepiv) Superposing a base cloth forming a supporting layer on the adhesive layer formed in the step (a); subsequently drying and cooling the adhesive layer with the base fabric;
vi) Stripping off the release paper; and obtaining the PVC artificial leather finished product with the support.
The method for producing the supported PVC artificial leather of the present utility model may be further characterized in that, in the step of superposing the base fabric constituting the support layerv) In (a)The tension of the coating line is controlled to be in the range of 20 to 60N.
The utility model further comprises the use of the supported PVC artificial leather of the utility model for manufacturing a headrest for a car seat.
The utility model further comprises an automotive seat headrest having the supported PVC artificial leather of the utility model as a facing.
Drawings
FIG. 1 schematically shows a method of determining tortuosity according to the utility model.
Detailed Description
The PVC compact layer with the support PVC artificial leather consists of PVC, a plasticizer and optional other PVC compact layer additives. The other PVC compact layer additives include, for example, fillers, stabilizers, color pastes, dispersants.
The PVC foaming layer with the support PVC artificial leather consists of PVC, a plasticizer, a foaming agent and optional other PVC foaming layer additives. The other PVC foaming layer additives comprise filler, stabilizer, flame retardant, color paste, catalyst and dispersing agent.
The adhesive layer of the present utility model with support PVC artificial leather consists of an adhesive and optionally other adhesive layer additives. The other adhesive layer additives include, for example, stabilizers.
The same type of additives may be the same or different in the layers of the supported PVC artificial leather of the present utility model. For example, the plasticizers in the PVC compact layer and the PVC foam layer may be the same or different, but for the purpose of simplifying the process, the above plasticizers are preferably the same.
The PVC in the PVC compact layer and the PVC foam layer of the present utility model may be PVC conventionally used for manufacturing the supported PVC artificial leather. The person skilled in the art can determine the specific parameters of the PVC used and their content by means of prior art documents and/or by means of limited routine experimentation. For example, the PVC may be derived from PVC powder obtained from emulsion polymerization having an average degree of polymerization of 72 to 76. The PVC may be used in an amount of 40 to 60 mass% based on the total amount of the substances of the PVC dense layer or the PVC foam layer.
The PVC plasticizer in the PVC compact layer and the PVC foam layer of the present utility model may be a liquid plasticizer conventionally used for manufacturing a supported PVC artificial leather. The person skilled in the art can determine the type of plasticizer used and its content by means of prior art documents and/or limited routine experimentation. For example, the plasticizer may be selected from the group consisting of epoxidized soybean oil, alkyl phthalates, and combinations thereof. The total amount of the plasticizer may be 30 to 50 mass% based on the total amount of the substances of the PVC compact layer or the PVC foam layer.
The foaming agent in the PVC foaming layer of the present utility model may be a foaming agent conventionally used for manufacturing a supported PVC artificial leather. The person skilled in the art can determine the type of plasticizer used and its content by means of prior art documents and/or limited routine experimentation. For example, the blowing agent may be a physical blowing agent, such as one selected from the group consisting of dissolved inert gases, water, ethyl acetate, methanol, ethanol, diethyl ether, fluorocarbons, azodicarbonamide, and combinations thereof, or a chemical blowing agent, such as a compound that decomposes at a temperature to produce a gas, such as an azide. Foaming agents expand in volume, for example, when heated, due to the generation of gas by physical gasification or by chemical reactions. Combinations of different foaming agents may be used. The total amount of the foaming agent may be 1 to 5 mass% based on the total amount of the substances of the PVC compact layer or the PVC foaming layer.
The adhesive in the adhesive layer of the present utility model may be an adhesive conventionally used for manufacturing a supported PVC artificial leather. The person skilled in the art can determine the type of adhesive used by means of prior art documents and/or by means of limited routine experimentation. For example, the adhesive may be a mixture of PVC powder, plasticizer and stabilizer as components of the PVC compact layer and the PVC foam layer, wherein the amounts of PVC, plasticizer and stabilizer may be 40 to 60 mass%, 30 to 50 mass% and 1 to 10 mass%, respectively, based on the total amount of materials of the adhesive layer.
The optional other additives in the PVC compact layer, PVC foam layer, adhesive layer of the present utility model may be additives conventionally used in the manufacture of supported PVC artificial leather. The specific type of other additives of each type used and their content can be determined by the person skilled in the art by means of prior art documents and/or limited routine experimentation. For example, the PVC compact layer stabilizer or the PVC foam layer stabilizer may be selected from the group consisting of an organic epoxy compound stabilizer for thermally stabilizing PVC, a calcium zinc stabilizer, an organotin compound stabilizer, and a combination thereof, and may be used in an amount of 1 to 10 mass% based on the total amount of the PVC compact layer or the PVC foam layer dried matter. For another example, the PVC dense layer filler or PVC foam layer filler may be selected from powdered calcium carbonate, powdered titanium dioxide and talc and combinations thereof, and may be used in an amount of 5 to 10 mass% based on the total amount of the PVC dense layer or PVC foam layer dried matter, and/or in an amount such that the total amount of the corresponding layer matter reaches 100 mass%.
The PVC compact layer, the PVC foam layer and the adhesive layer of the present utility model, which support PVC artificial leather, have a specific weight, wherein: the weight of the PVC compact layer is 215g/m 2 To 255g/m 2 For example, it may be 215g/m 2 、220g/m 2 、225g/m 2 、230g/m 2 、235g/m 2 、240g/m 2 、245g/m 2 、250g/m 2 、255g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The weight of the PVC foam layer is 215g/m 2 To 255g/m 2 For example, it may be 215g/m 2 、220g/m 2 、225g/m 2 、230g/m 2 、235g/m 2 、240g/m 2 、245g/m 2 、250g/m 2 、255g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the The weight of the adhesive layer was 65g/m 2 To 95g/m 2 For example, it may be 65g/m 2 、70g/m 2 、75g/m 2 、80g/m 2 、85g/m 2 、90g/m 2 、95g/m 2 。
The base cloth with the support layer for supporting the PVC artificial leather is polyester-cotton blended cloth. Preferably, the base fabric is a polyester-cotton blend fabric of 60% to 65% polyester and 40% to 35% cotton, preferably 65% polyester and 35% cotton, for example a polyester-cotton blend fabric of 60% polyester and 40% cotton, 61% polyester and 39% cotton, 62% polyester and 38% cotton, 63% polyester and 37% cotton, 64% polyester and 36% cotton, 65% polyester and 35% cotton. The base fabric may be woven using a single-sided weave.
The impact of the weight of the PVC densified layer, PVC foamed layer and adhesive layer, and the composition of the base fabric (and, optionally, the weave of the base fabric) on the final properties of the supported PVC artificial leather is complex and sometimes contradictory to each other. For example, increasing the weight of the PVC dense layer and the PVC foam layer will result in a decrease in softness (i.e., an increase in tortuosity), while decreasing the weight of the PVC dense layer and the PVC foam layer will result in a decrease in abrasion resistance. Thus, general consideration must be given to the performance of the product in terms of its properties to find the combination of conditions that can ultimately be used in the event that the requirements for the conditions are mutually contradictory and contradictory.
The supported PVC artificial leather of the present utility model may be formed by a known method. For example, a transfer knife coating method known to those skilled in the art may be used, which comprises the steps of:
i) Weighing all materials forming the PVC compact layer, the PVC foaming layer and the adhesive layer according to a formula respectively, and fully mixing to obtain PVC compact layer paste, PVC foaming layer paste and adhesive layer paste;
ii) Coating step on release paper with roller or doctor bladei) The PVC compact layer paste formed in the step (a), then drying the coating of the paste, and then cooling the dried coating to form a PVC compact layer;
iii) In the stepii) A step of coating the PVC compact layer formed in the step with a roller or a doctor bladei) The coating of the above paste is then dried while foaming the formed coating, for example, in the case of using an azodicarbonamide foaming agent, decomposing the foaming agent by heating the coating to 190 to 220 ℃ to release, for example, ammonia gas, carbon monoxide, carbon dioxide and/or nitrogen gas, thereby foaming the coating, and subsequently cooling the dried coating to form a PVC foam layer;
iv) In the stepiii) Coating step on PVC foaming layer formed in (2)i) Forming an adhesive layer from the adhesive layer paste formed in (a);
v) In the stepiv) Superposing a base cloth forming a supporting layer on the adhesive layer formed in the step (a); subsequently drying and cooling the adhesive layer with the base fabric;
vi) Stripping off the release paper; and obtaining the PVC artificial leather finished product with the support.
In the above stepsii) To the point ofiv) Respectively by using a coater with a coating weight control system in the coating step, which coating weight control system and its use are known to the person skilled in the art and may be, for example, gravimat FMI-15 commercially available from Mahlo GmbH+Co.KG of Saal/Donau, germany.
In the above stepsv) In order to properly stretch the base fabric, the tension of the coating line in this step should be controlled to be within a certain range, for example, within a range of 20 to 60N. Too little tension can not be with the base cloth level expansion, and too big tension will be with the base cloth excessive stretching to can not obtain the high compliance of taking support PVC synthetic leather finished product.
The conditions in the above individual steps can be obtained from prior art literature or by limited routine experimentation. For example, the drying of each layer may be carried out at a temperature of 180 to 195 ℃ for the PVC compact layer, 160 to 175 ℃ for the PVC foam layer, 190 to 220 ℃ for the adhesive layer, and normal pressure.
The release paper used in the above-described preparation method of the supported PVC artificial leather of the present utility model may be release paper conventionally used for manufacturing supported PVC artificial leather. The type and size of the release paper used can be determined by the person skilled in the art by means of prior art documents and/or limited routine experimentation. It should be noted that due to the smaller PVC coating weight and lower thickness, a very flat release paper is required to prevent the coating blade from getting stuck on the protruding release paper surface due to the locally too thick release paper thickness when coating the PVC foam layer and/or the PVC compact layer.
The supported PVC artificial leather of the present utility model has a high degree of curvature, for example, a degree of curvature of 50 to 70mm in the machine direction and/or 60 to 70m in the transverse direction.
The abrasion resistance of the supported PVC artificial leather of the present utility model was measured by the universal motor company standard GMW 3208.
The supported PVC artificial leather of the utility model may also optionally have a surface paint layer on the PVC densified layer. The surface paint layer coats the surface of the PVC compact layer back to the PVC foaming layer and is used for surface decoration and protection. The composition, coating and use of the surface paint layer are known to those skilled in the art.
The supported PVC artificial leather of the utility model can be used in various fields requiring high flexibility. For example, the supported PVC artificial leather of the present utility model can be used to manufacture an automotive seat headrest by manually covering a previously foam-molded headrest foam with a headrest cover made of artificial leather. The steps and process parameters of the above-described methods can be determined by the person skilled in the art by means of prior art documents and/or by means of limited routine experimentation.
Examples
A paste for a PVC compact layer and a PVC foam layer of a supported PVC artificial leather was prepared according to the formulation in table 1, and thus a supported PVC artificial leather was prepared. The base cloth of the supporting layer is polyester-cotton blended cloth woven by a single-side weaving method, wherein the base cloth is 65% of polyester and 35% of cotton.
TABLE 1
And comparing the bending degree and the wear resistance of the obtained artificial leather. The results are shown in Table 2.
TABLE 2
As can be seen from table 2, by controlling the weights of the PVC compact layer, the PVC foam layer and the adhesive layer, and the kind of the base cloth constituting the support layer, a supported PVC artificial leather was obtained which was excellent in both softness and abrasion resistance as characterized by bending.
Claims (8)
1. A PVC artificial leather with support comprises a PVC compact layer, a PVC foaming layer, an adhesive layer and a support layer, wherein
The PVC compact layer consists of PVC compact layer PVC, PVC compact layer plasticizer and optional other PVC compact layer additives;
the PVC foaming layer consists of PVC foaming layer PVC, PVC foaming layer plasticizer, PVC foaming layer foaming agent and optional other PVC foaming layer additives;
the adhesive layer is composed of an adhesive layer adhesive and optionally other adhesive layer additives;
the usage amount of the PVC compact layer PVC and the PVC foaming layer PVC is 40 to 60 mass percent based on the total amount of substances of the PVC compact layer and the PVC foaming layer respectively;
the amounts of the PVC compact layer plasticizer and the PVC foaming layer plasticizer are respectively 30 to 50 mass percent based on the total amount of the substances of the PVC compact layer and the PVC foaming layer;
the PVC foaming layer foaming agent is 1 to 5 mass percent based on the total mass of the substances of the PVC foaming layer;
the sum of the amounts of the components of the PVC compact layer, the PVC foaming layer and the adhesive layer is 100 mass percent based on the total amount of the substances of the PVC compact layer, the PVC foaming layer and the adhesive layer respectively; the weight of the PVC compact layer is 215g/m 2 To 255g/m 2 ；
The weight of the PVC foam layer is 215g/m 2 To 255g/m 2 ；
The weight of the adhesive layer was 65g/m 2 To 95g/m 2 ；
The base fabric constituting the support layer is a polyester-cotton blend fabric of 60% to 65% polyester and 40% to 35% cotton woven using a single-side weave.
2. The supported PVC artificial leather of claim 1, wherein
The PVC dense layer PVC and PVC foam layer PVC are respectively obtained from PVC powder obtained by emulsion polymerization, wherein the PVC powder has an average polymerization degree of 72 to 76.
3. The PVC imitation leather with support according to claim 1 or 2, wherein
The other PVC compact layer additive is selected from PVC compact layer filler, PVC compact layer stabilizer, PVC compact layer color paste and PVC compact layer dispersing agent;
the other PVC foaming layer additives are selected from PVC foaming layer filler, PVC foaming layer stabilizer, PVC foaming layer flame retardant, PVC foaming layer color paste, PVC foaming layer catalyst and PVC foaming layer dispersing agent; and/or
The other adhesive layer additives are selected from adhesive layer stabilizers.
4. The supported PVC artificial leather of claim 1 or 2, wherein the weight of the PVC compact layer is 220g/m 2 To 250g/m 2 ；
The weight of the PVC foaming layer is 220g/m 2 To 250g/m 2 The method comprises the steps of carrying out a first treatment on the surface of the And/or
The weight of the adhesive layer was 70g/m 2 To 90g/m 2 。
5. The supported PVC artificial leather of claim 1, wherein the base fabric is a polyester cotton blend fabric of 65% polyester and 35% cotton.
6. A method of preparing the supported PVC artificial leather of any one of claims 1 to 5, comprising the steps of:
i) Weighing proper amounts of all materials forming the PVC compact layer, the PVC foaming layer and the bonding layer according to a formula respectively, and fully mixing to obtain PVC compact layer paste, PVC foaming layer paste and bonding layer paste;
ii) Coating step on release paper with roller or doctor bladei) The PVC compact layer paste formed in the step (a), then drying the coating of the paste, and then cooling the dried coating to form a PVC compact layer;
iii) In the stepii) Roller or doctor blade coating step for the dense layer of PVC formed in (C)i) The PVC foaming layer paste formed in (2) and then drying the coating of the paste while foaming the formed coatingSubsequently cooling the dried coating to form a PVC foam layer;
iv) In the stepiii) Coating step on PVC foaming layer formed in (2)i) Forming an adhesive layer from the adhesive layer paste formed in (a);
v) In the stepiv) Superposing a base cloth forming a supporting layer on the adhesive layer formed in the step (a); subsequently drying and cooling the adhesive layer with the base fabric, wherein the tension of the coating line is controlled in the range of 20 to 60N;vi) Stripping off the release paper; and obtaining the PVC artificial leather finished product with the support.
7. Use of the supported PVC artificial leather according to any one of claims 1 to 5 for manufacturing car seat headrest.
8. An automobile seat headrest having the supported PVC artificial leather as claimed in any one of claims 1 to 5 as a facing.
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Address after: No. 108 Jianghai South Road, Jingang Town, Zhangjiagang City, Suzhou City, Jiangsu Province, 215632 Patentee after: Benecke Changshun automotive interior materials (Zhangjiagang) Co.,Ltd. Country or region after: China Address before: 215632 No.1 Jianghai South Road, Jingang town, Zhangjiagang City, Jiangsu Province Patentee before: BENECKE-CHANGSHUN AUTO TRIM (ZHANGJIAGANG) Co.,Ltd. Country or region before: China |