阅读说明：本技术 Pvc皮革加工方法 (PVC leather processing method ) 是由 匡建武 张术根 丁磊 唐炯珲 林铭晖 宋伟强 于 2020-11-20 设计创作，主要内容包括：本申请涉及一种PVC皮革加工方法,其特征在于,所述方法包括：在离型纸的一面通过涂布工艺涂布PVC发泡层；在PVC发泡层表面涂布粘结剂；在粘结剂表面贴合基布层,获得初加工产品；将初加工产品的离型纸剥离,获得半成品,在半成品的PVC发泡层表面通过压延工艺贴合PVC面层,获得PVC皮革。通过将涂布与压延工艺结合,使得生产时可以结合涂布工艺与压延工艺的生产特点,生产同时具有高弹性、高厚度、高强度特性的PVC产品。(The application relates to a PVC leather processing method, which is characterized by comprising the following steps: coating a PVC foaming layer on one surface of the release paper through a coating process; coating an adhesive on the surface of the PVC foaming layer; attaching a base cloth layer to the surface of the adhesive to obtain a primary processed product; and stripping the release paper of the primary processed product to obtain a semi-finished product, and attaching a PVC surface layer to the surface of the PVC foaming layer of the semi-finished product through a calendering process to obtain the PVC leather. By combining the coating process and the rolling process, the production characteristics of the coating process and the rolling process can be combined during production, and the PVC product with high elasticity, high thickness and high strength can be produced.)

1. A PVC leather processing method, characterized in that the method comprises:

a. coating a PVC foaming layer on one surface of the release paper through a coating process;

b. coating an adhesive on the surface of the PVC foaming layer;

c. attaching a base cloth layer to the surface of the binder to obtain a primary processed product;

d. and stripping the release paper of the primary processed product to obtain a semi-finished product, and attaching a PVC surface layer to the surface of the PVC foaming layer of the semi-finished product through a calendering process to obtain the PVC leather.

2. The PVC leather processing method according to claim 1, wherein before step b, the method further comprises: and drying the PVC foaming layer.

3. The method for processing the PVC leather as claimed in claim 2, wherein the drying temperature in the step of drying the PVC foaming layer is 170-180 degrees.

4. A PVC leather processing method according to claim 1, characterized in that after step c, and before step d, the method further comprises: and drying the primary processed product.

5. The PVC leather processing method as claimed in claim 4, wherein in the step of drying the primary processed product, the drying temperature is 185-205 degrees.

6. A PVC leather processing method according to claim 1, characterized in that before step d, and after step c, the method further comprises:

mixing the raw materials of the PVC surface layer to obtain a first mixture;

banburying the first mixture to obtain a banburied product;

and extruding and molding the banburying product in a molten state to obtain the PVC surface layer.

7. The PVC leather processing method is characterized in that the PVC surface layer raw materials are mixed in a mixing barrel, and the temperature in the mixing barrel is 100-120 degrees.

8. The PVC leather processing method of claim 6, wherein the temperature of the first mixture is required to be 120-150 ℃ when the first mixture is internally mixed.

9. The processing method of the PVC leather as claimed in claim 1, wherein the thickness of the PVC leather is 1.0-1.2mm after the PVC foaming layer surface is attached to the PVC surface layer by a calendering process.

10. PVC leather, characterized in that it is obtained by the process according to any one of claims 1 to 6.

Technical Field

The application relates to a PVC leather processing method, and belongs to the field of PVC leather processing.

Background

At present, the traditional PVC leather processing industry is divided into a coating process and a calendering process, and the two processes have advantages and disadvantages respectively.

The coating process is slurry processing, and the processing state of the slurry is liquid. The coating process is to coat the liquid slurry on release paper and then dry the release paper. When the base cloth is attached, the base cloth has small tension and large elasticity, so the coating process can produce high-elasticity PVC products. However, the release paper has a small carrying capacity and cannot carry too much liquid slurry, so that the coating process cannot produce products with high thickness and high hardness.

The rolling process is that the powder is extruded out when being in a molten state through high-temperature stirring of ten thousand horsepower, and then rolling is carried out. Because the calendering process does not need release paper as a carrier, the calendering process can produce PVC products with high strength and high thickness. However, when the base cloth is attached by adopting the calendering process, the tension of the base cloth is large, and the base cloth basically loses elasticity after the attachment is finished, so that a high-elasticity product cannot be produced.

Disclosure of Invention

The application provides a PVC leather processing method and a device, which can solve the problem that the common PVC leather processing method is single, so that diversified products cannot be produced. The application provides the following technical scheme:

in a first aspect, a PVC leather processing method is provided, the method comprising:

coating a PVC foaming layer and a binder on one surface of release paper in sequence by a coating process, and then attaching a base cloth layer to obtain a primary processing product; and then peeling the release paper of the primary processed product, and attaching a PVC surface layer on the surface of the original release paper of the PVC foaming layer by a calendering process to finally obtain the PVC leather.

Wherein, after coating the PVC foaming layer and before coating the adhesive, the PVC foaming layer needs to be dried. After the base fabric layer is attached and before the release paper is peeled, the primary processed product needs to be dried.

In a second aspect, a PVC leather is provided, which is made by the processing method provided in the first aspect.

The beneficial effect of PVC leather processing this application lies in: by combining the coating process and the rolling process, the production characteristics of the coating process and the rolling process can be combined during production, and the PVC product with high elasticity, high thickness and high strength can be produced.

The foregoing is a summary of the present disclosure, and in order to provide a clear understanding of the technical solutions of the present disclosure and to be implemented in accordance with the present disclosure, the following is a detailed description of the preferred embodiments of the present disclosure.

Detailed Description

The following examples are provided to further illustrate the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

First, the terms of art to which this application relates are explained below.

The coating process comprises the following steps: a method for preparing composite material (film) by coating pasty polymer, molten polymer or polymer solution on paper, cloth or plastic film.

And (3) rolling process: the plasticized thermoplastic material close to viscous flow temperature is passed through a series of horizontal roller gaps rotating in opposite directions to make the material undergo the action of extrusion and extension, so that it can be made into the sheet-like product with a certain thickness, width and smooth surface.

PVC: PVC (Polyvinyl chloride) is the universal plastic with the largest yield in the world and is widely applied. The product has wide application in building materials, industrial products, daily necessities, floor leathers, floor tiles, artificial leathers, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, fibers and the like.

PVC foaming layer: PVC is used as a main raw material, a foaming agent, a flame retardant and an anti-aging agent are added, and extrusion forming is carried out by adopting special equipment.

The application relates to a processing method of PVC leather, which at least comprises the following steps:

step a, coating a PVC foaming layer on one surface of release paper through a coating process.

And step a also comprises drying the PVC foaming layer. Further, when the PVC foaming layer is dried, the drying temperature is required to be 170-180 degrees.

And b, coating an adhesive on the surface of the PVC foaming layer.

Alternatively, the type of the adhesive can be selected according to the requirements of actual products, for example, when a high-peel-strength PVC product needs to be produced, the adhesive with the property can be selected, and the application does not limit the type of the adhesive.

And c, attaching a base cloth layer to the surface of the adhesive to obtain a primary processed product.

Further, step c further comprises: and drying the primary processed product to ensure that the base cloth layer and the binder are firmly adhered. Specifically, when the primary processing product is dried, the drying temperature is 185-205 degrees.

And d, stripping the release paper, and attaching a PVC surface layer to the surface of the original release paper of the PVC foaming layer through a calendering process to obtain the PVC leather.

The original surface adhered by the release paper is adhered to one surface of the PVC surface layer before the release paper is peeled.

Wherein, before step d, the following operations are also required to obtain the material required for the calendering step:

mixing the raw materials of the PVC surface layer to obtain a first mixture.

And banburying the first mixture to obtain a banburied product.

The banburying product is extruded and molded in a molten state to obtain the PVC surface layer.

Wherein, when the raw materials of the PVC surface layer are mixed, the raw materials of the PVC surface layer are mixed in a mixing barrel, and the temperature in the mixing barrel is 100-120 degrees; in the banburying step of the first mixture, the temperature of the first mixture is required to be 120-150 ℃.

Further, the thickness of the PVC leather processed by the steps is 1.0-1.2 mm.

Alternatively, the calendering operation described above can be repeated, multiple times, for the purpose of producing high thickness PVC products.

In summary, the PVC leather processing method provided in this embodiment combines the coating process and the rolling process, so that the characteristics of the coating process and the rolling process can be combined during processing, and a PVC product with high elasticity, high thickness, and high strength can be produced

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.