CN221797363U - Double-sided film with release film - Google Patents

Abstract

The utility model discloses a double-sided adhesive roll with a release film, belonging to the technical field of FPC pasting process. The technical scheme thereof comprises a carrier film, a plurality of double-sided adhesive tapes are pasted on the carrier film, release films of the same size are pasted on the sides of the plurality of double-sided adhesive tapes away from the carrier film respectively, a rough portion for reducing the stickiness between the carrier film and the double-sided adhesive tape is arranged on the carrier film and at one end of the double-sided adhesive tape, the rough portion completely covers the side length of one end of the double-sided adhesive tape, and the release force of the release film is greater than the release force of the carrier film; the utility model has the advantage that by setting the release force ratio between the release film and the carrier film, and the rough portion, when a user tears off the release film, the double-sided adhesive tape can be easily torn off together, and the use is convenient.

Description

Double-sided film with release film

Technical Field

The utility model relates to the technical field of FPC pasting process, and more specifically to a double-sided film with a release film.

Background Art

Flexible printed circuit board, referred to as FPC, is a highly reliable and extremely flexible printed circuit board made of polyimide or polyester film as the substrate. It has the characteristics of high wiring density, light weight, thin thickness and good bending properties. The double-sided tape commonly used in the market for pasting FPC is usually composed of a carrier film, double-sided tape and a release film.

However, in the prior art, when users tear off the release film, the double-sided tape used for FPC often sticks to the carrier film and cannot be torn off together with the release film. Users also need to manually lift up and tear off the double-sided tape, which is inconvenient to use.

Utility Model Content

In view of the shortcomings of the prior art, the purpose of the utility model is to provide a double-sided film roll with a release film, which has the advantage that by setting the release force ratio between the release film and the carrier film, and the rough part, the user can easily tear off the double-sided tape when tearing off the release film, which is convenient to use.

In order to achieve the above purpose, the utility model provides the following technical solutions:

A double-sided film roll with a release film comprises a carrier film, on which a plurality of double-sided adhesive tapes are adhered, and release films of the same size are adhered to the sides of the double-sided adhesive tapes away from the carrier film, respectively; a rough portion for reducing the stickiness between the double-sided adhesive tape and the carrier film and located at one end of the double-sided adhesive tape is provided, the rough portion completely covers the side length of one end of the double-sided adhesive tape, and the release force of the release film is greater than the release force of the carrier film.

The utility model is further configured as follows: an easy-tear portion is arranged at one end of the release film located at the rough portion.

The utility model is further configured as follows: the easy-to-tear portion is provided with anti-slip lines.

The utility model is further configured that: the easy-tear portion is integrally formed with the release film.

The utility model is further configured as follows: the release film and the carrier film are made of the same material, and the thickness of the release film is greater than the thickness of the carrier film.

The utility model is further configured as follows: the release film is made of antistatic PET material.

The utility model is further configured as follows: a plurality of double-sided adhesive tapes are arranged equidistantly along the length direction of the carrier film.

Compared with the prior art, the utility model has at least the following advantages:

1. By providing a rough portion on the carrier film, the stickiness between one end of the double-sided adhesive tape and the carrier film is reduced. When the user tears off the release film from this end, the end of the double-sided adhesive tape is easily separated from the carrier film, thereby tearing off the double-sided adhesive tape together; and by setting the release force ratio between the release film and the carrier film, the release film can easily tear off the double-sided adhesive tape together.

2. By setting up the easy-tear part, users no longer need to lift up the release film and double-sided tape with effort. They can tear them off directly by holding the easy-tear part, which is easy to operate. In addition, the easy-tear part is provided with anti-slip texture, which can increase the friction between the hand and the easy-tear part and prevent slipping.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an overall schematic diagram of the present embodiment;

FIG. 2 is a schematic diagram of a partial explosion of this embodiment.

Explanation of the accompanying reference numerals: 1. carrier film; 2. double-sided tape; 3. release film; 4. rough portion; 5. easy-to-tear portion; 6. anti-slip pattern.

DETAILED DESCRIPTION

The utility model is further described in detail below in conjunction with the accompanying drawings.

A double-sided film roll with a release film, as shown in Figures 1 and 2, includes a carrier film 1, which is a whole long strip and is wound on a cylinder. A plurality of double-sided adhesive tapes 2 are adhered to the carrier film 1, and the plurality of double-sided adhesive tapes 2 are arranged equidistantly along the length direction of the carrier film 1. Release films 3 are adhered to the sides of the plurality of double-sided adhesive tapes 2 away from the carrier film 1, respectively. The release films 3 and the double-sided adhesive tapes 2 are of the same size and completely cover each other, so the finished product is sequentially composed of the carrier film 1, the double-sided adhesive tape 2, and the release film 3.

A rough portion 4 for reducing the stickiness between the carrier film 1 and the double-sided adhesive tape 2 is provided at one end of the carrier film 1. The rough portion 4 completely covers the side length of one end of the double-sided adhesive tape 2. The rough portion 4 is composed of a plurality of protruding fine frosted particles. When the user tears off the release film 3 from one end of the rough portion 4, the end of the double-sided adhesive tape 2 is easily separated from the carrier film 1, so that the double-sided adhesive tape 2 is torn off together.

The release force of the release film 3 is greater than the release force of the carrier film 1, so that the adhesion between the double-sided adhesive 2 and the release film 3 is greater than the adhesion between the double-sided adhesive 2 and the carrier film 1. The release force value ratio of this embodiment is obtained through standard testing. The release force range of the release film 3 is that when a TESA 7475PV02 tape with a size of 25 mm wide and 300 mm long is pasted on the release film 3 and pulled open in a 180-degree direction, the double-sided adhesive can withstand a tensile force in the range of 40-50 g, while the release force range of the carrier film 1 is that when a TESA 7475PV02 tape with a size of 25 mm wide and 300 mm long is pasted on the carrier film 1, the double-sided adhesive can withstand a tensile force in the range of 40-50 g. When the 7475PV02 tape is pulled apart in a 180-degree direction, the double-sided tape can withstand a tensile force in the range of 1-3g. The setting of the release force ratio makes it easy to tear off the double-sided tape 2 when tearing off the release film 3. At the same time, when the double-sided tape 2 is attached to the FPC, the user can tear off the release film 3 without tearing off the double-sided tape 2, thus achieving a good balance in use.

The release film 3 and the carrier film 1 are made of the same material, but the thickness of the release film 3 is greater than that of the carrier film 1, so that the weight of the release film 3 is greater than that of the carrier film 1 of the same size. The release film 3 and the carrier film 1 are specifically made of antistatic PET material.

An easy-tear portion 5 is provided at one end of the release film 3 located at the rough portion 4. The easy-tear portion 5 and the release film 3 are integrally formed with the same material. There is no double-sided tape 2 between the easy-tear portion 5 and the carrier film 1, so the easy-tear portion 5 and the carrier film 1 are in a separated state. The user can directly grasp the easy-tear portion 5 to tear off the release film 3, and the easy-tear portion 5 is provided with anti-slip texture 6 to increase the friction between the user's hand and the easy-tear portion 5 to prevent slipping and make it easier to grasp.

The use process of the utility model is as follows: the user grasps the easy-tear portion 5 to tear off the release film 3 and the double-sided adhesive tape 2 from the carrier film 1, adheres the double-sided adhesive tape 2 to the FPC, and then grasps the easy-tear portion 5 to tear off the release film 3 from the double-sided adhesive tape 2.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. A double-sided film with release film, characterized in that: including carrying the membrane, it has a plurality of double faced adhesive tape to paste on the carrier film, a plurality of the double faced adhesive tape is kept away from the one side of carrier film and is pasted respectively and has the same size from the type membrane, the one end that just is located the double faced adhesive tape on the carrier film is provided with the roughness that is used for reducing the stickness between with the double faced adhesive tape, the roughness covers the boundary length of double faced adhesive tape one end completely, from the type force of type membrane is greater than the type force of carrying the membrane from.

2. The double-sided tape release film according to claim 1, wherein: and one end of the release film, which is positioned on the rough part, is provided with an easy-tearing part.

3. The double-sided tape release film according to claim 2, wherein: and the easy-to-tear part is provided with anti-slip lines.

4. The double-sided tape release film according to claim 2, wherein: the easy-to-tear part and the release film are integrally formed.

5. The double-sided tape release film according to claim 1, wherein: the release film and the carrier film are made of the same material, and the thickness of the release film is larger than that of the carrier film.

6. The double-sided tape release film of claim 5, wherein: the release film is made of antistatic PET material.

7. The double-sided tape release film according to claim 1, wherein: the double-sided adhesive tapes are equidistantly distributed along the length direction of the carrier film.