CN115538183A - Fluffy PVC artificial leather and preparation method thereof - Google Patents

Fluffy PVC artificial leather and preparation method thereof Download PDF

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Publication number
CN115538183A
CN115538183A CN202211254177.5A CN202211254177A CN115538183A CN 115538183 A CN115538183 A CN 115538183A CN 202211254177 A CN202211254177 A CN 202211254177A CN 115538183 A CN115538183 A CN 115538183A
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pvc
artificial leather
parts
layer
foaming
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Chinese (zh)
Inventor
孙晓斌
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Seiren Suzhou Co Ltd
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Seiren Suzhou Co Ltd
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Priority to CN202211254177.5A priority Critical patent/CN115538183A/en
Publication of CN115538183A publication Critical patent/CN115538183A/en
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    • 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
    • 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
    • D06N3/0047—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 obtained by incorporating air, i.e. froth
    • 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
    • D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
    • 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
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0075—Napping, teasing, raising or abrading of the resin coating
    • 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
    • D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
    • D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
    • 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

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  • 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

The invention discloses a villous PVC artificial leather which comprises a surface layer, a foaming layer attached to the surface layer, a compact layer attached to the foaming layer and lining attached to the compact layer; wherein the foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 50-100 parts of plasticizer and 0-20 parts of physical foaming agent, wherein one side of the foaming layer has a fluffy touch feeling; the compact layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 50-100 parts of plasticizer; the surface of the villus-feeling PVC artificial leather has printed textures. The invention can simplify the processing technology of the PVC artificial leather with fluff feeling, reduce the embossing cost and prepare the PVC artificial leather with different fluff feeling.

Description

Fluffy PVC artificial leather and preparation method thereof
Technical Field
The invention particularly relates to a fluffy PVC artificial leather and a preparation method thereof.
Background
As a surface decorative material, PVC artificial leather has been widely used in the fields of automotive interiors, furniture, cases, shoes and hats, etc., and the visual effects of touch, texture, color, etc. of the conventional PVC artificial leather on the market at present are difficult to meet the increasing aesthetic requirements of people and to continuously explore new things.
Among the existing products, most of products with obvious fluffy feeling are fabric products, namely suede-like fabrics, but the products have single shape, poor texture and no leather texture.
At present, PVC artificial leather with fluffy feeling and suede effect is available in the market, but the effect is much worse than that of fabric products. In addition, the fluff effect of the PVC artificial leather is generally achieved by an embossing process, and the embossing roller is not only expensive but also low in tensile strength and fast in plane abrasion.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the PVC artificial leather with the fluffy feeling, which is fine in touch feeling, can have texture patterns with different shapes, and is high in tensile strength and wear-resisting strength.
Meanwhile, the preparation method of the PVC artificial leather with the fluffy feeling is provided, the processing technology is simplified, and the embossing cost is low.
The invention is realized by the following technical scheme:
a PVC artificial leather with a fluffy feeling comprises a surface layer, a foaming layer attached to the surface layer, a compact layer attached to the foaming layer and lining attached to the compact layer;
wherein the foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 50-100 parts of plasticizer and 0-20 parts of physical foaming agent, wherein one side of the foaming layer has a fluffy touch feeling;
the compact layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 50-100 parts of plasticizer;
the surface of the PVC artificial leather with the villus feeling is provided with printed textures.
Further, the particle diameter of the physical foaming agent satisfies D (0.5) 10 to 40 μm.
Furthermore, the polymerization degree of the PVC paste resin in the foaming layer is 900-1300, and the polymerization degree of the PVC paste resin in the compact layer is 1300-1800.
Further, the plasticizer is a polyester plasticizer, and is a linear high molecular polymer prepared by performing polycondensation reaction on polyfunctional carboxylic acid and polyhydric alcohol.
Further, the preparation method of the PVC artificial leather with the villus feeling comprises the following steps:
liquid preparation procedure: uniformly mixing PVC paste resin, a plasticizer and a physical foaming agent according to parts by weight to prepare PVC foaming slurry for preparing a foaming layer; uniformly mixing PVC paste resin and a plasticizer according to the parts by weight to prepare PVC non-foaming slurry for preparing a compact layer;
blade coating process: coating and scraping PVC foaming slurry on release paper, and carrying out micro-foaming to form a foaming layer; coating the PVC non-foaming slurry on the foaming layer to form a compact layer, so that a PVC artificial leather bottom blank is formed on the release paper, and stripping the PVC artificial leather bottom blank from the release paper;
sanding: sanding one side of the PVC artificial leather bottom blank foaming layer on a sanding machine through sand paper;
the surface treatment process comprises the following steps: carrying out surface treatment on the PVC artificial leather treated by the sanding process to form a surface layer;
an embossing process: embossing the PVC artificial leather treated by the surface treatment process to generate printing textures.
Furthermore, the roughness of the sand paper is selected from 80 meshes to 200 meshes.
Further, in the embossing process, the temperature of the front preheating wheel is set to be 80-100 ℃, and the temperature of the heating zone is set to be: 150-170 ℃, processing speed: 8 +/-2 m/min.
Further, the blade coating process also comprises a lining cloth pasting process, after a compact layer is formed, the lining cloth and the compact layer can be pasted through a pressing wheel, then the lining cloth and the compact layer are put into an oven for high-temperature pasting, the temperature of the oven is 160-200 ℃, and finally the PVC artificial leather base blank is peeled from the release paper.
Further, the surface treatment is to treat the surface by a hand feeling agent and an abrasion-resistant agent.
Further, in the blade coating process: the processing temperature for forming the foaming layer is 140-180 ℃, and the processing speed is 10-16 m/min; the processing temperature for forming the compact layer is 160-200 ℃, and the processing speed is 10-16 m/min.
Compared with the prior art, the invention has the advantages that:
1. the softness and the hand feeling of the PVC artificial leather with the fluff feeling are adjusted by adding different parts of the plasticizer into the compact layer.
2. The physical foaming agent with different parts is added into the foaming layer to adjust the intensity of the fluff touch feeling on the surface of the PVC artificial leather with the fluff touch feeling.
3. By improving the preparation method of the PVC artificial leather with the fluffy feeling, the adhesive layer is not required to be prepared, the inherent processing mode of the traditional PVC artificial leather is broken through, and the processing technology of the PVC artificial leather with the fluffy feeling is simplified.
4. The application field of the PVC artificial leather with the fluffy feel is widened by selectively attaching or not attaching the lining cloth.
5. The PVC artificial leather with fluff feeling prepared by the process does not need to manufacture a fluff feeling embossing roller with high price, and can prepare the PVC artificial leather with fluff feeling with different feelings by only adjusting the mesh number of the abrasive paper and the part of the physical foaming agent, so that the tensile strength and the plane abrasion speed of the PVC artificial leather with fluff feeling are improved, and the application range and the cost performance of the product are greatly improved.
6. The embossing process can be carried out on the basis of the fluff touch, various textures are given to the embossing process, and the modeling of the fluff-touch PVC artificial leather is enriched.
Drawings
FIG. 1 is a schematic cross-sectional view of a PVC artificial leather with a nap feeling according to the present invention;
fig. 2 shows a 3D three-dimensional checkered embossed pattern in an embodiment of the fluffy PVC artificial leather of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, so that those skilled in the art can fully understand the technical contents of the present invention. It should be understood that the following examples are intended to further illustrate the present invention and should not be construed as limiting the scope of the present invention, and that certain insubstantial modifications and adaptations of the invention by those skilled in the art based on the foregoing description are intended to be covered by the present invention. The specific process parameters and the like of the following examples are also only one example of suitable ranges, i.e., those skilled in the art can select the appropriate ranges through the description herein, and are not limited to the specific values exemplified below.
Referring to fig. 1, the fluffy PVC artificial leather comprises a surface layer 1, a foam layer 2 attached to the surface layer 1, a dense layer 3 attached to the foam layer 2, and a lining 4 attached to the dense layer 3.
The foaming layer 2 comprises the following components in parts by weight: 100 parts of PVC paste resin, 50-100 parts of plasticizer, 0-20 parts of physical foaming agent and 5-20 parts of other auxiliary agents.
Wherein the foaming layer 2 has a fluffy touch on the side close to the surface layer 1, and the particle diameter of the physical foaming agent satisfies D (0.5) 10-40 μm. The polymerization degree of the PVC paste resin in the foaming layer is 900-1300.
The compact layer 3 comprises the following components in parts by weight: 100 parts of PVC paste resin, 50-100 parts of plasticizer and 5-10 parts of other additives.
Wherein the polymerization degree of the PVC paste resin in the compact layer is 1300-1800.
The plasticizer is a polyester plasticizer, is a linear high molecular polymer prepared by polycondensation of polyfunctional carboxylic acid and polyhydric alcohol, and has the advantages of extraction resistance, low mobility and the like. The other auxiliary agents comprise calcium-zinc stabilizers, fillers such as calcium carbonate and talcum powder.
The top layer 1 had a greasy feel and abrasion resistance; the surface of the PVC artificial leather with the villus feeling is provided with printed textures.
The preparation process of the villous PVC artificial leather comprises the following steps:
the method comprises the following steps: liquid preparation procedure: uniformly mixing PVC paste resin, a plasticizer and a physical foaming agent in parts by weight to prepare PVC foaming slurry for preparing a foaming layer; uniformly mixing PVC paste resin and a plasticizer according to the parts by weight to prepare PVC non-foaming slurry for preparing a compact layer.
The physical foaming agent with different parts is added into the foaming layer to adjust the intensity of the fluff touch feeling on the surface of the PVC artificial leather with the fluff touch feeling. The flexibility and the hand feeling of the PVC artificial leather with the fluff feeling are adjusted by adding different parts of plasticizers into the compact layer.
Step two: blade coating procedure: coating and scraping PVC foaming slurry on release paper, and carrying out micro-foaming to form a foaming layer; PVC non-foaming slurry is coated on the foaming layer to form a compact layer, so that a PVC artificial leather bottom blank is formed on the release paper, and the PVC artificial leather bottom blank is peeled from the release paper.
Wherein the processing temperature for forming the foaming layer is 140-180 ℃, and the processing speed is 10-16 m/min; the processing temperature for forming the compact layer is 160-200 ℃, and the processing speed is 10-16 m/min.
The blade coating process can also comprise a lining cloth pasting process, after a compact layer is formed, lining cloth and the compact layer can be pasted through a pressing wheel, then the lining cloth and the compact layer are put into an oven for high-temperature pasting, the temperature of the oven is 160-200 ℃, and finally, the PVC artificial leather bottom blank is peeled from release paper. The step can be selected according to actual conditions, lining cloth can be selected to be pasted, and lining cloth can not be pasted, so that the application field of the product is greatly expanded.
Step three: sanding: and sanding one side of the foaming layer of the PVC artificial leather base blank on a sanding machine through sand paper. The roughness of the sand paper is 80-200 meshes. Select the fine hair PVC synthetic leather that the fine hair that selects for use different roughness to grind the hair can form the differentiation sense of touch.
Step four: the surface treatment process comprises the following steps: and (3) carrying out surface treatment on the PVC artificial leather treated by the sanding process to form a surface layer.
The surface treatment is to treat the surface by a hand feeling agent and a wear-resisting agent, so that the PVC artificial leather with the fluff feeling has certain sliminess and wear-resisting strength.
Step five: an embossing step: and embossing the PVC artificial leather treated by the surface treatment process to generate printing textures.
In the embossing process, the temperature of the front preheating wheel is set to be 80-100 ℃, and the temperature of the heating zone is set to be: 150-170 ℃, processing speed: 8 +/-2 m/min.
Example 1
Step one, a liquid mixing procedure: 100 parts of PVC paste resin, 80 parts of plasticizer and 5 parts of physical foaming agent with the particle size D (0.5) of 20 mu m are selected according to the parts by weight and are uniformly mixed to prepare PVC foaming slurry for preparing a foaming layer. Wherein, the K value of the PVC paste resin is 65-70, and the optimal expansion temperature of the physical foaming agent with the particle size D (0.5) of 20 mu m is 140-180 ℃; selecting 100 parts of PVC paste resin and 80 parts of plasticizer according to parts by weight, and uniformly mixing to prepare PVC non-foaming slurry for preparing a compact layer; wherein the K value of the PVC paste resin is 70-75.
Step two, a coating and scraping procedure: firstly, the PVC foaming slurry is coated and scraped on release paper for micro-foamingFoaming layer, processing temperature is 140-180 ℃, processing speed is 10m/min, coating weight is 200g/m 2 (ii) a Then PVC non-foaming slurry is coated on the foaming layer to form a compact layer, the processing temperature is 160-200 ℃, the processing speed is 10m/min, and the coating weight is 300g/m 2 (ii) a Then the lining cloth is attached to the dense layer, and the lining cloth can be optionally not attached according to the requirement; and finally, stripping a product on the release paper to form a flannelette PVC artificial leather bottom blank.
Step three, sanding: one side of the foaming layer of the PVC artificial leather base blank is sanded on a sanding machine through 80-mesh sand paper.
Step four, a surface treatment process: and (3) carrying out surface treatment on the sanded PVC artificial leather through a hand feeling agent and a wear-resisting agent to form a surface layer.
Step five, embossing: the surface-treated PVC artificial leather with a nap feeling was embossed to give a different texture pattern to the surface-treated PVC leather, and in this example, a 3D three-dimensional square grid pattern was selected (as shown in fig. 2).
The following examples 2 to 8 are different from example 1 only in the components, weight parts and the selected roughness of the sandpaper in the foamed layer and the compact layer, and therefore, only the selection of the components, weight parts and sandpaper will be described and explained, and the rest of the steps and methods are the same as those in example 1, and thus, the description thereof is omitted.
Example two
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 10 parts of physical foaming agent with the particle size D (0.5) of 20 mu m.
Sanding speed is 5m/min, and sand paper is selected to be 80 meshes.
EXAMPLE III
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 15 parts of physical foaming agent with the particle size D (0.5) of 20 mu m.
Sanding speed is 5m/min, and sand paper is selected to be 80 meshes.
Example four
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 20 parts of physical foaming agent with the particle size D (0.5).
Sanding speed is 5m/min, and sand paper is selected to be 80 meshes.
EXAMPLE five
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 5 parts of physical foaming agent with the particle size D (0.5) 20.
Sanding speed is 5m/min, and sand paper is selected to be 200 meshes.
EXAMPLE six
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 10 parts of physical foaming agent with the particle size D (0.5) of 20.
Sanding speed is 5m/min, and sand paper is selected to be 200 meshes.
EXAMPLE seven
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 15 parts of physical foaming agent with the particle size D (0.5) 20.
Sanding speed is 5m/min, and sand paper is selected to be 200 meshes.
Example eight
The dense layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 80 parts of plasticizer.
The foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 80 parts of plasticizer and 20 parts of physical foaming agent with the particle size D (0.5).
Sanding speed is 5m/min, and sand paper is selected to be 200 meshes.
TABLE I is a villiform PVC artificial leather performance detection table
Figure BDA0003889127120000061
Remarking: evaluation of pile touch feeling: on a scale of 1 to 10, the higher the rating, the stronger the pile feel.
According to the above table, the fluffy PVC artificial leather and the preparation method thereof can prepare fluffy PVC artificial leather with different touch senses by adjusting the mesh number of the abrasive paper and the part of the physical foaming agent, thereby greatly improving the application range and the cost performance of the product, and improving the tensile strength and the plane abrasion. Through adjustment manufacturing procedure, break through the inherent processing mode of traditional PVC synthetic leather, need not to prepare the adhesion layer, simplified processing technology, reduced and processed into cost. By selecting two modes of lining cloth pasting or lining cloth not pasting, the application field of the wool-feeling PVC artificial leather is widened. The preparation method of the invention can carry out embossing process without manufacturing expensive fluff sense embossing roller, endows various textures with the fluff sense embossing roller, and enriches the modeling of the fluff sense PVC artificial leather.
It should be noted that the above-mentioned preferred embodiments are merely illustrative of the technical concepts and features of the present invention, and are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.

Claims (10)

1. The PVC artificial leather with the fluffy feeling is characterized by comprising a surface layer, a foaming layer attached to the surface layer, a compact layer attached to the foaming layer and lining attached to the compact layer;
wherein the foaming layer comprises the following components in parts by weight: 100 parts of PVC paste resin, 50-100 parts of plasticizer and 0-20 parts of physical foaming agent, wherein one side of the foaming layer has a fluffy touch feeling;
the compact layer comprises the following components in parts by weight: 100 parts of PVC paste resin and 50-100 parts of plasticizer;
the surface of the villus-feeling PVC artificial leather has printed textures.
2. The PVC artificial leather having a velvet feeling of claim 1, wherein the particle size of the physical foaming agent satisfies D (0.5) 10 to 40 μm.
3. The PVC artificial leather with a fluffy feeling of the claim 1, wherein the polymerization degree of the PVC paste resin in the foaming layer is 900-1300, and the polymerization degree of the PVC paste resin in the compact layer is 1300-1800.
4. The PVC artificial leather with a velvet feeling of claim 1, wherein the plasticizer is a polyester plasticizer which is a linear high molecular polymer prepared by polycondensation of a polyfunctional carboxylic acid with a polyhydric alcohol.
5. The method for preparing a fluffy PVC artificial leather according to any one of claims 1 to 4, characterized by comprising the steps of:
liquid preparation procedure: uniformly mixing PVC paste resin, a plasticizer and a physical foaming agent in parts by weight to prepare PVC foaming slurry for preparing a foaming layer; uniformly mixing PVC paste resin and a plasticizer according to the parts by weight to prepare PVC non-foaming slurry for preparing a compact layer;
blade coating process: coating and scraping PVC foaming slurry on release paper, and carrying out micro-foaming to form a foaming layer; coating PVC non-foaming slurry on the foaming layer to form a compact layer, forming a PVC artificial leather bottom blank on the release paper, and stripping the PVC artificial leather bottom blank from the release paper;
sanding: sanding one side of the foaming layer of the PVC artificial leather base blank on a sanding machine through sand paper;
the surface treatment process comprises the following steps: carrying out surface treatment on the PVC artificial leather treated by the sanding process to form a surface layer;
an embossing process: and embossing the PVC artificial leather treated by the surface treatment process to generate printing textures.
6. The method for preparing PVC artificial leather with fluffy feel according to claim 5, wherein the roughness of the sand paper is 80-200 meshes.
7. The method of manufacturing PVC artificial leather with a velvet feeling according to claim 5, wherein in the embossing process, the temperature of the front preheating wheel is set to 80 to 100 ℃, and the temperature of the heating zone is set to: 150-170 ℃, processing speed: 8 +/-2 m/min.
8. The method for preparing PVC artificial leather with fluffy feel according to claim 5, wherein the blade coating process further comprises a lining cloth pasting process, after the compact layer is formed, the lining cloth and the compact layer can be pasted through a pressing wheel, then the compact layer and the lining cloth are put into an oven for high-temperature pasting, the oven temperature is 160-200 ℃, and finally the PVC artificial leather base blank is peeled from the release paper.
9. The method for preparing PVC artificial leather with fluffy feel according to claim 5, wherein the surface treatment is carried out by treating the surface with a hand feeling agent and a wear-resistant agent.
10. The method for preparing PVC artificial leather with fluffy feel according to claim 5, wherein the blade coating process comprises the following steps: the processing temperature for forming the foaming layer is 140-180 ℃, and the processing speed is 10-16 m/min; the processing temperature for forming the compact layer is 160-200 ℃, and the processing speed is 10-16 m/min.
CN202211254177.5A 2022-10-13 2022-10-13 Fluffy PVC artificial leather and preparation method thereof Pending CN115538183A (en)

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