CN218478698U

CN218478698U - High-efficiency thermal viscosity-reducing film

Info

Publication number: CN218478698U
Application number: CN202222918624.4U
Authority: CN
Inventors: 张照成; 彭辉; 林志化; 吴�荣; 罗豪; 吴家润
Original assignee: Guangdong Junrui New Materials Co ltd
Current assignee: Guangdong Junrui New Materials Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-02-14
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a high-efficiency thermal-release adhesive film, which relates to the technical field of thermal-release adhesive films and comprises a thermal shrinkage film, a thermal-release pressure-sensitive adhesive layer and a release film which are arranged from bottom to top in sequence, wherein the thermal-release pressure-sensitive adhesive layer is uniformly coated on one side surface of the thermal shrinkage film; the thermal shrinkage film and the release film are connected in a covering mode, and the thermal viscosity reduction pressure-sensitive adhesive layer is located between the thermal shrinkage film and the release film. A high-efficient heat subtracts mucous membrane, through setting up heat and subtract and glue pressure sensitive adhesive layer, foaming powder is the thermal expansion in the back glue film of being heated, thereby make the face of gluing reduce or lose viscidity, it replaces traditional PET base film to set up the pyrocondensation membrane, the pyrocondensation membrane is when the heating, not only the face of gluing reduces viscidity, it itself also can contract by a wide margin and curl, thereby make whole sticky tape break away from dropping from the quilt thing surface fast, the convenient separation heat subtracts the mucous membrane, the separation is comparatively simple, realize that efficient sticky tape is automatic to be torn off, can reduce the requirement when heating temperature and heating.

Description

High-efficiency thermal viscosity-reducing film

Technical Field

The utility model relates to a heat subtracts adhesive film technical field, in particular to high-efficient heat subtracts adhesive film.

Background

When tiny components such as plastic parts, glass, metal plates and the like are processed, the components are usually required to be fixed in an auxiliary mode through adhesive tapes, and damage caused by movement of the components in a cutting process is avoided. In addition, when the local surface of a certain component needs to be polished in the etching, washing or coating process, in order to protect other parts which do not need to be processed from being affected, the part which does not need to be processed is also covered by the adhesive tape, and then the adhesive tape is peeled off after the processing is finished. However, the adhesive strength of the tape used for fixing or shielding needs to be strictly controlled, and if the adhesive force is too strong, a situation that the component is damaged easily occurs when the tape is removed, and if the adhesive force is too small, the component is easily damaged because the component cannot be completely fixed/shielded. Therefore, the upper thermal-release film, namely the thermal-release (or thermal-release, thermal-peeling) pressure-sensitive adhesive tape, is required to be used, can be applied to bonding glass, metal, ceramic capacitors, chips and the like, and plays a role of a protective film in the processes of cutting, CNC (computer numerical control) and the like; through the mode of heating, this sticky tape adhesion descends fast, directly drops from being pasted the thing surface even, tears the facility of removing, avoids energetically tearing the damage of process to being pasted the thing.

The prior patent (publication number: CN 107163869A) discloses a viscosity-reducing adhesive tape and a preparation method thereof, and relates to an adhesive tape and a preparation method thereof. Include by supreme setting gradually from type rete, heat-sensitive glue film, bottom surface coating and PO rete down, PO rete top still is provided with the PET rete. The inventor finds that the following problems in the prior art are not solved well in the process of realizing the scheme: when the product is heated, the foaming powder in the adhesive layer is heated to expand, so that the adhesive surface is reduced or loses viscosity, however, when the product is applied in a large quantity, the viscosity reducing effect of the thermal viscosity reducing adhesive tape is unstable and nonuniform due to nonuniform heating everywhere or nonuniform material and content of the foaming powder, the ideal viscosity reducing effect is achieved, the required heating time is long, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a high-efficient heat subtracts mucosa can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

an efficient thermal viscosity-reducing film comprises a thermal shrinkage film, a thermal viscosity-reducing pressure-sensitive adhesive layer and a release film which are sequentially arranged from bottom to top.

Preferably, the heat-shrinkable film is a PVC heat-shrinkable film or a PS heat-shrinkable film.

Preferably, a thermal viscosity reduction pressure sensitive adhesive layer is uniformly coated on one side surface of the thermal shrinkage film.

Preferably, the heat-shrinkable film and the release film are in covering connection, and the heat-viscosity reduction pressure-sensitive adhesive layer is positioned between the heat-shrinkable film and the release film.

Preferably, the thermal-release pressure-sensitive adhesive layer has a peel force ranging from 500g/25mm to 3000g/25mm and a thickness ranging from 10 μm to 30 μm.

Preferably, the stripping force of the thermal-de-bonding pressure-sensitive adhesive layer after being heated at 60-80 ℃ is 0g/25 mm-30 g/25mm, and the heating time of the thermal-de-bonding pressure-sensitive adhesive layer is 2 min-5 min.

Preferably, the thickness of the heat-shrinkable film is 15 to 35 μm.

Compared with the prior art, the utility model discloses following beneficial effect has:

through setting up hot visbreaking pressure sensitive adhesive layer, foaming powder is heated the inflation in the back glue film of being heated, thereby make the face of glue reduce or lose viscidity, set up pyrocondensation membrane and replace traditional PET base film, pyrocondensation membrane is when the heating, not only the face of glue reduces viscidity, it itself also can contract by a wide margin and curl, thereby make whole sticky tape break away from fast from the surface of being pasted and drop, make things convenient for the hot visbreaking membrane of separation, the separation is comparatively simple, realize efficient sticky tape automatic tear-off, can reduce the requirement when heating temperature and heating.

Drawings

FIG. 1 is a schematic view of the overall structure of a high-efficiency thermal anti-adhesive film of the present invention;

fig. 2 is a schematic view of the overall structure of the double-layer high-efficiency thermal-reduction film of the present invention.

In the figure: 1. a heat-shrinkable film; 2. a thermal de-bonding pressure sensitive adhesive layer; 3. a release film; 4. a heat-shrinkable film with a release coating.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

The first embodiment is as follows:

as shown in figure 1, the high-efficiency thermal-release adhesive film comprises a thermal shrinkage film 1, a thermal-release pressure-sensitive adhesive layer 2 and a release film 3 which are arranged from bottom to top in sequence,

in the embodiment, a heat-thinning pressure-sensitive adhesive layer 2 is uniformly coated on one side surface of the heat-shrinkable film 1; the thermal shrinkage film 1 and the release film 3 are connected in a covering mode, and the thermal viscosity reduction pressure sensitive adhesive layer 2 is located between the thermal shrinkage film 1 and the release film 3.

Specifically, through setting up heat visbreaking pressure sensitive adhesive layer 2, foaming powder is heated thermal expansion in the back glue film of being heated to make the face of gluing reduce or lose viscidity, through setting up pyrocondensation membrane 1 and replacing traditional PET base film, pyrocondensation membrane 1 not only glues the face and reduces viscidity when the heating, and it itself also can contract by a wide margin and curl, thereby makes whole sticky tape break away from the quilt thing surface fast and drops, realizes that efficient sticky tape is automatic to tear.

In this embodiment, the thermal adhesive-reducing pressure-sensitive adhesive layer 2 has a peel strength in the range of 500g/25mm to 3000g/25mm and a thickness of 10 μm; the stripping force of the thermal viscosity-reducing pressure-sensitive adhesive layer 2 after being heated at 60-80 ℃ is 0g/25 mm-30 g/25mm, and the heating time of the thermal viscosity-reducing pressure-sensitive adhesive layer 2 is 2min; the thickness of the heat-shrinkable film 1 was 15 μm.

Specifically, the peeling force of the pressure-sensitive adhesive layer 2 can be greatly reduced after heating, so that the function of sticking and fixing a device can be realized, and the device can be conveniently taken down after heating.

A production process of an efficient thermal de-bonding film comprises the steps of feeding a thermal shrinkage film 1 into a coating machine, uniformly coating a thermal de-bonding pressure-sensitive adhesive layer 2, carrying out thermal curing or UV curing treatment, finally coating a release film 3 by using a laminating machine, and rolling a finished product.

The above is an example in which the thickness of the heat shrinkable film 1 is 15 μm.

Example two:

as shown in fig. 1, the high-efficiency thermal-release adhesive film comprises a thermal shrinkage film 1, a thermal-release pressure-sensitive adhesive layer 2 and a release film 3 which are sequentially arranged from bottom to top.

In this embodiment, the thermal adhesive-reducing pressure-sensitive adhesive layer 2 has a peel strength in the range of 500g/25mm to 3000g/25mm and a thickness of 30 μm; the stripping force of the thermal viscosity-reducing pressure-sensitive adhesive layer 2 after being heated at 60-80 ℃ is 0g/25 mm-30 g/25mm, and the heating time of the thermal viscosity-reducing pressure-sensitive adhesive layer 2 is 5min; the thickness of the heat-shrinkable film 1 was 35 μm.

The above is an example in which the thickness of the heat shrinkable film 1 is 35 μm.

Example three:

as shown in fig. 2, the double-layer efficient thermal-release adhesive film comprises a thermal shrinkage film 4 with a release coating and a thermal-release pressure-sensitive adhesive layer 2 which are sequentially arranged from bottom to top.

In this embodiment, the thermal adhesive-reducing pressure-sensitive adhesive layer 2 has a peel strength in the range of 500g/25mm to 3000g/25mm and a thickness of 30 μm; the stripping force of the thermal viscosity-reducing pressure-sensitive adhesive layer 2 after being heated at 60-80 ℃ is 0g/25 mm-30 g/25mm, and the heating time of the thermal viscosity-reducing pressure-sensitive adhesive layer 2 is 5min.

A production process of a double-layer efficient thermal-release film comprises the steps of feeding a thermal shrinkage film 4 with a release coating into a coating machine, uniformly coating a thermal-release pressure-sensitive adhesive layer 2, carrying out thermal curing or UV curing treatment, and finally rolling a finished product.

The above is an example of a double layer high efficiency thermal reduction film.

The working principle is as follows: the utility model provides a contain the foaming powder in hot visbreaking pressure sensitive adhesive layer 2, power of pasting can reduce by a wide margin after being heated, it replaces traditional PET base film to set up pyrocondensation membrane 1, pyrocondensation membrane 1 can be PVC pyrocondensation membrane or OPS pyrocondensation membrane etc, pyrocondensation membrane 1 is when heating, not only the face of gluing reduces viscidity, it also can shrink by a wide margin and curl itself, thereby make whole sticky tape break away from fast from being pasted the thing surface and drop, realize efficient sticky tape is automatic to tear off, when using, select the heat of suitable size to subtract the mucous membrane according to the demand, then tear off from type membrane 3, directly paste on appointed device surface, need use the air heater to subtract mucous membrane surface and blow off hot-blastly when needing to take off, then pyrocondensation membrane 1 can shrink and curl, viscidity reduces simultaneously, conveniently separate heat and subtract mucous membrane, the heat cycle is short, the separation is comparatively simple.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An efficient thermal reduction film, characterized in that: comprises a thermal shrinkage film (1), a thermal viscosity-reducing pressure-sensitive adhesive layer (2) and a release film (3) which are arranged from bottom to top in sequence.

2. A high efficiency thermal detackifying film as in claim 1, wherein: the heat-shrinkable film (1) is a PVC (polyvinyl chloride) heat-shrinkable film or a PS (polystyrene) heat-shrinkable film.

3. A high efficiency thermal detackifying film as in claim 1, wherein: and a heat-thinning pressure-sensitive adhesive layer (2) is uniformly coated on the surface of one side of the heat-shrinkable film (1).

4. A high efficiency thermal detackifying film as in claim 1, wherein: the thermal shrinkage film (1) and the release film (3) are connected in a covering mode, and the thermal viscosity reduction pressure-sensitive adhesive layer (2) is located between the thermal shrinkage film (1) and the release film (3).

5. A high efficiency thermal detackifying film according to claim 1, wherein: the peeling force range of the thermal-de-bonding pressure-sensitive adhesive layer (2) is 500g/25 mm-3000 g/25mm, and the thickness is 10 mu m-30 mu m.

6. A high efficiency thermal detackifying film as in claim 1, wherein: the stripping force of the thermal de-bonding pressure-sensitive adhesive layer (2) after being heated at 60-80 ℃ is 0g/25 mm-30 g/25mm, and the heating time of the thermal de-bonding pressure-sensitive adhesive layer (2) is 2 min-5 min.

7. A high efficiency thermal detackifying film as in claim 1, wherein: the thickness of the heat-shrinkable film (1) is 15-35 mu m.