CN118374234A - Multilayer extinction self-adhesive film and preparation method thereof - Google Patents

Abstract

The invention relates to a multilayer extinction self-adhesive film, which comprises an EVA layer, an EAA layer, a PP wire drawing layer, a PE layer and an extinction layer; the EVA layer has a thickness of 1.0-1.5 μm; the EAA layer thickness is 0.8-1.5 μm; the thickness of the PP wiredrawing layer is 6.0-9.0 mu m; the thickness of the PE layer is 0.2-1.0 mu m; the thickness of the extinction layer is 1.5-2.0 μm. The multilayer extinction self-adhesive film is composed of five layered structures, wherein the EVA layer, the EAA layer, the PP wire drawing layer and the PE layer all have good thermoplasticity, the layered structures can be bonded together through a high-temperature melting process, and binders such as glue are not needed, so that the product meets the environmental protection requirement, and the requirements of the current market are met.

Description

Multilayer extinction self-adhesive film and preparation method thereof

Technical Field

The invention belongs to the technical field of paper preparation, and particularly relates to a multilayer extinction self-adhesive film and a preparation method thereof.

Background

In order to achieve the waterproof, dampproof or oil-resistant effects, the existing composite processing paper is formed by bonding a plurality of laminated film papers together through an adhesive such as glue and the like, wherein the adhesive contains various chemical substances, and the use of the adhesive is required to be reduced in the preparation process for the purposes of environmental protection and high preparation efficiency.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a multilayer extinction self-adhesive film without glue.

In order to achieve the above purpose, the present invention adopts the following technical scheme: the multilayer extinction self-adhesive film comprises an EVA layer, an EAA layer, a PP wire drawing layer, a PE layer and an extinction layer;

The EVA layer has a thickness of 1.0-1.5 μm;

the EAA layer thickness is 0.8-1.5 μm;

the thickness of the PP wiredrawing layer is 6.0-9.0 mu m;

The thickness of the PE layer is 0.2-1.0 mu m;

the thickness of the extinction layer is 1.5-2.0 μm.

The multilayer extinction self-adhesive film consists of five layered structures, wherein the EVA layer, the EAA layer, the PP wire drawing layer and the PE layer all have good thermoplasticity, the layered structures can be bonded together through a high-temperature melting process, and adhesives such as glue are not needed, so that the product meets the environmental protection requirement, and the requirements of the current market are met.

According to the invention, preference is given to.

The EVA layer has a thickness of 1-1.5 μm;

The EAA layer thickness is 1.5 μm;

The thickness of the PP wiredrawing layer is 9.0 mu m;

The PE layer thickness is 1.0 μm;

the matting layer had a thickness of 2.0. Mu.m.

Further, the preparation method of the multilayer extinction self-adhesive film comprises the following preparation steps:

A. Paving raw materials on a prefabrication station, and superposing an EAA layer on the EVA layer;

B. superposing a wiredrawing pp layer on the EAA layer;

C. Superposing a PE layer on the pp layer;

D. superposing a extinction layer on the PE layer;

E. The raw materials are conveyed into a thermal fusion station through a conveyor belt and are fused at a high temperature of 180 ℃ to 250 DEG C

Fusing and plasticizing;

F. e, cooling the thermal fusion in the step E to form a film, wherein the cooling temperature is 5-50 ℃;

G. And (5) coiling.

The raw materials are fused at high temperature and cooled, film forming treatment after fusion is realized, glue is not needed in the preparation process, the preparation process is simple, and the finished product has good toughness and self-adhesion.

Preferably, the melting temperature in step E is 220 ℃.

The multilayer extinction self-adhesive film has the beneficial effects that: the multilayer extinction self-adhesive film consists of five layered structures, wherein the EVA layer, the EAA layer, the PP wire drawing layer and the PE layer all have good thermoplasticity, the layered structures can be bonded together through a high-temperature melting process, and adhesives such as glue are not needed, so that the product meets the environmental protection requirement, and the requirements of the current market are met.

The preparation method of the multilayer extinction self-adhesive film has the beneficial effects that: the raw materials are fused at high temperature and cooled, film forming treatment after fusion is realized, glue is not needed in the preparation process, the preparation process is simple, and the finished product has good toughness and self-adhesion.

Detailed Description

The invention will be described in detail by way of specific embodiments for better explaining the invention.

The multilayer extinction self-adhesive film comprises a layered structure with ethylene-vinyl acetate copolymer, preferably an EVA layer, wherein the thickness of the EVA layer is 1.0-1.5 mu m, the EVA layer is a solid meltable polymer which does not need solvents and does not contain 100% of moisture, the EVA layer is solid at normal temperature and is melted to become flowable at a certain temperature and is a liquid with certain viscosity, one side of the EVA layer is provided with an EAA layer, the thickness of the EAA layer is 0.8-1.5 mu m, the EAA layer is a polymer with thermoplasticity and extremely high adhesiveness, the EVA layer can be adhered with the EVA layer under the action of high temperature, the other side of the EVA layer is provided with a wiredrawing PP layer, the wiredrawing PP layer with the thickness of 6-9 mu m is thermoplastic resin prepared by propylene polymerization, the PE layer has friction and corrosion resistance, the other side of the wiredrawing PP layer is 0.2-1.0 mu m, the PE is a high-molecular organic compound, the PE layer is generally solid, is color and has high thermoplasticity, the hand feeling is wax, the strength is improved, the thickness of the self-adhesive film is increased, and the PE layer is provided with the thickness of the PE layer is 1.5 mu m, and the PE layer is provided with the thickness of 1.5 mu m.

Example 1

A method for preparing a multilayer extinction self-adhesive film, comprising the following steps:

A. paving raw materials on a prefabrication station, and superposing an EAA layer with the thickness of 0.8 mu m on an EVA layer with the thickness of 1.0 mu m;

B. superposing a 6 mu m wiredrawing PP layer on the EAA layer;

C. a PE layer of 0.2 μm is superimposed on the PP layer;

D. a 1.5 μm matt layer is superimposed on the PE layer;

E. The raw materials are conveyed into a thermal fusion station through a conveyor belt and are fused at a high temperature of 180 ℃ to 250 DEG C

Fusing and plasticizing;

F. e, cooling the thermal fusion in the step E to form a film, wherein the cooling temperature is 5-50 ℃;

G. And (5) coiling.

Example 2

A method for preparing a multilayer extinction self-adhesive film, comprising the following steps:

A. paving raw materials on a prefabrication station, and superposing an EAA layer with the thickness of 1 mu m on an EVA layer with the thickness of 1.2 mu m;

B. superposing a drawing PP layer with the diameter of 8 mu m on the EAA layer;

C. a PE layer of 0.8 μm is superimposed on the PP layer;

D. A extinction layer of 1.8 μm is superimposed on the PE layer;

E. the raw materials enter a thermal fusion station through a conveyor belt, and are melted and plasticized at a high temperature of 180-250 ℃;

F. e, cooling the thermal fusion in the step E to form a film, wherein the cooling temperature is 5-50 ℃;

G. And (5) coiling.

Example 3

A method for preparing a multilayer extinction self-adhesive film, comprising the following steps:

A. Paving raw materials on a prefabrication station, and superposing an EAA layer with the thickness of 1.5 mu m on an EVA layer with the thickness of 1.5 mu m;

B. superposing a wire drawing PP layer with the diameter of 9 mu m on the EAA layer;

C. a PE layer of 1.0 μm is superimposed on the PP layer;

D. Superimposing a 2.0 μm matting layer on the PE layer;

E. the raw materials enter a thermal fusion station through a conveyor belt, and are melted and plasticized at a high temperature of 180-250 ℃;

F. e, cooling the thermal fusion in the step E to form a film, wherein the cooling temperature is 5-50 ℃;

G. And (5) coiling.

The performance test data of the multilayer matt self-adhesive films prepared in examples 1-3 of the present invention are shown in Table 1.

TABLE 1

As can be seen from Table 1, the multilayer matt self-adhesive films prepared in examples 1 to 3 of the present invention,

High toughness, good glossiness, good extinction, good product quality and good service performance.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the authorization specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values.

The foregoing description is only of the preferred embodiments of the invention, and all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (4)

1. Multilayer extinction self-adhesive film, its characterized in that: comprises an EVA layer, an EAA layer, a PP wire drawing layer, a PE layer and a extinction layer;

The EVA layer has a thickness of 1.0-1.5 μm;

the EAA layer thickness is 0.8-1.5 μm;

the thickness of the PP wiredrawing layer is 6.0-9.0 mu m;

The thickness of the PE layer is 0.2-1.0 mu m;

the thickness of the extinction layer is 1.5-2.0 μm.

2. The multilayer matt self-adhesive film according to claim 1, wherein:

The EVA layer has a thickness of 1-1.5 μm;

The EAA layer thickness is 1.5 μm;

The thickness of the PP wiredrawing layer is 9.0 mu m;

The PE layer thickness is 1.0 μm;

the matting layer had a thickness of 2.0. Mu.m.

3. The preparation method of the multilayer extinction self-adhesive film is characterized by comprising the following preparation steps:

A. Paving raw materials on a prefabrication station, and superposing an EAA layer on the EVA layer;

B. Superposing a wiredrawing PP layer on the EAA layer;

C. A PE layer is overlapped on the PP layer;

D. superposing a extinction layer on the PE layer;

E. the raw materials enter a thermal fusion station through a conveyor belt, and are melted and plasticized at a high temperature of 180-250 ℃;

F. e, cooling the thermal fusion in the step E to form a film, wherein the cooling temperature is 5-50 ℃;

G. And (5) coiling.

4. A method of preparing a multilayer matt self-adhesive film according to claim 3, wherein: the melting temperature in step E was 220 ℃.