CN213108564U

CN213108564U - PET composite release film

Info

Publication number: CN213108564U
Application number: CN202021578665.8U
Authority: CN
Inventors: 何乃枚
Original assignee: Guangdong Libaoneng Adhesive Technology Co ltd
Current assignee: Zhuhai Libaoneng New Materials Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-05-04
Anticipated expiration: 2030-08-03

Abstract

The application relates to a PET composite release film, which comprises a silicon oil layer, a PET substrate layer and a fog film layer, wherein the PET substrate layer comprises a first end face and a second end face which are oppositely arranged; the silicon oil layer is formed on the first end face; the fog film layer is arranged on the second end face and comprises a first surface and a second surface which are oppositely arranged, the first surface is an end face close to the PET substrate layer, one of the first surface and the second surface is a fog face, and the fog face is used as a printing face. Through setting up the fog rete to regard as the printing face with the fog face of fog rete, then, no matter be the printing face keep away from the one side of PET stratum basale again or be close to the one side of PET stratum basale, because the fog face has good inking ability, traditional relatively has great promotion on resistant alcohol scraping performance from the type membrane homoenergetic.

Description

PET composite release film

Technical Field

The application relates to from the type membrane field, especially relate to a PET is compound from type membrane.

Background

The PET release film is a material commonly used for thermal transfer printing, also called a PET silicon oil film, and a layer of silicon oil is coated on the surface of the PET film to reduce the adhesive force on the surface of the PET film and achieve the release effect. The PET release film can show extremely light and stable release force for various organic pressure-sensitive adhesives (such as hot-melt adhesive, acrylic and rubber-based pressure-sensitive adhesives). According to different required release film release forces and different viscosities of isolation product glue, the release force is correspondingly adjusted, so that the isolation film has extremely light and stable release force during stripping. However, the existing release film has single function, is not scratch-resistant, and the printed surface is not resistant to alcohol scratch, so that the function of the release film is required to be perfected, and the practicability is required to be improved.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a PET composite release film for solving the problem that the printed surface of the existing release film is not resistant to alcohol scratch.

A PET composite release film comprises a silicon oil layer, a PET substrate layer and a fog film layer, wherein,

the PET substrate layer comprises a first end face and a second end face which are oppositely arranged;

the silicon oil layer is formed on the first end face;

the fog film layer is arranged on the second end face and comprises a first surface and a second surface which are oppositely arranged, the first surface is an end face close to the PET substrate layer, one of the first surface and the second surface is a fog face, and the fog face is used as a printing face.

In one embodiment, the PET substrate layer is a multi-layer co-extruded polyethylene terephthalate pure white film, and the first end face and the second end face are high-gloss faces.

In one embodiment, the PET base layer has a thickness of 150 um.

In one embodiment, the fog film layer is a fog-faced PET film.

In one embodiment, the thickness of the fog film layer is less than the thickness of the PET base layer.

In one embodiment, the first surface is a matte surface, and the fog film layer is combined with the PET substrate layer after the first surface is printed.

In one embodiment, the PET substrate further comprises the pattern layer, the pattern layer is arranged on the PET substrate layer, and the fog film layer is fixedly connected to the pattern layer.

In one embodiment, the patterned layer is gravure formed on the second end face.

In one embodiment, the PET substrate further comprises an adhesive layer, wherein the adhesive layer is arranged between the pattern layer and the fog film layer, and the fog film layer is fixedly connected to the PET substrate layer through the adhesive layer.

In one embodiment, the adhesive layer has a transmittance of greater than 95%.

Above-mentioned PET is compound from type membrane, through setting up fog rete to regard the matte of fog rete as the printing face, then, no matter be the printing face keep away from one side of PET stratum basale again or be close to one side of PET stratum basale, because the matte has good inking ability, traditional relatively has great promotion from type membrane homoenergetic on resistant alcohol scraping performance.

Further, with the printing face setting in the one side that is close to the PET stratum basale, because the guard action of fog rete to the printing face, resistant alcohol scraping performance obtains very big reinforcing.

Drawings

Fig. 1 is a schematic structural diagram of a PET composite release film according to an embodiment of the present application;

fig. 2 is an exploded view of a PET composite release film according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a PET composite release film according to another embodiment of the present application;

fig. 4 is a schematic structural view of a PET composite release film according to another embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and fig. 2, a schematic structural diagram of a PET composite release film 10 according to an embodiment of the present application is exemplarily shown, the PET composite release film 10 includes a silicone oil layer 110, a PET substrate layer 120, and a fog film layer 130, the silicone oil layer 110 is disposed on one side of the PET substrate layer and is used for contacting with a surface to be protected, and the fog film layer 130 is disposed on one side of the PET substrate layer 120 away from the silicone oil layer 110, and has a good alcohol scratch resistance.

Particularly, the silicone oil layer 110 is formed by coating a silicone oil release agent on the PET substrate layer 120 through a high-precision coating machine, the formed silicone oil release layer shows extremely light and stable release force, and when the PET composite release film 10 is attached to a surface to be protected of a product, the release force of the silicone oil layer 110 can ensure that the PET composite release film 10 can be easily separated from the protection surface without damaging the protection surface.

The PET base layer 120 serves as a carrier for the silicone oil layer 110 for molding the silicone oil layer 110. Specifically, the PET substrate layer 120 may include a first end face 121 and a second end face 123 oppositely disposed, wherein the silicone oil layer 110 may be formed on the first end face 121, and the fog film layer 130 is disposed on the second end face 123. In a particular embodiment, the PET base layer 120 is a multi-layer coextruded polyethylene terephthalate pure white film.

In one or more embodiments, first end surface 121 and second end surface 123 are both high gloss surfaces to provide good light transmission.

In one or more embodiments, the PET base layer 120 is 150um thick. The appropriate thickness helps to improve the physical strength of the PET composite release film 10 and improve the scratch resistance.

Referring to fig. 2, the fog film layer 130 may include a first surface 131 and a second surface 133 that are oppositely disposed, where the first surface 131 is an end surface close to the PET substrate layer 120, the second surface 133 is a surface far away from the PET substrate layer 120, one of the first surface 131 and the second surface 133 is a fog surface, and one of the fog surfaces is a printing surface.

In some embodiments, the first surface 131 is a matte surface, and the first surface 131 is a printed surface. Specifically, in the manufacturing and molding process, the first surface 131 of the fog film layer 130 is printed, and then the printed surface is combined with the PET substrate layer 120. From this, because the printing face is located fog membrane layer 130 between PET stratum basale 120, the second surface 133 of fog membrane layer 130 is scraping one side, and fog membrane layer 130 provides good protection for the printing face, and consequently, the compound resistant alcohol scraping performance who leaves type membrane 10 of PET promotes greatly.

In other embodiments, the second surface 133 is a matte surface, and the second surface 133 is a printed surface, so that the matte surface can achieve good inking, and can better avoid ink dropping compared with a conventional smooth film surface during rubbing, and therefore, compared with a conventional release film, the alcohol scratch resistance can also be improved.

In one or more embodiments, the matte layer 130 is a matte PET film. The PET film has good mechanical property, and the scratch resistance of the surface is enhanced; meanwhile, the fog film layer 130 and the PET substrate layer 120 realize thickness increase, and physical strength of the PET composite release film 10 is enhanced. The thickness of the fog film layer 130 is less than the thickness of the PET base layer 120. In a specific embodiment, the thickness of the fog film layer 130 is 25 um.

Referring to fig. 3, in one or more embodiments, in order to improve the aesthetic property, the PET film further includes a pattern layer 140, the pattern layer 140 is disposed on the PET substrate layer 120, and the fog film layer 130 is fixedly connected to the pattern layer 140.

The pattern layer 140 is formed on the second end face 123. In a specific embodiment, the pattern layer 140 is formed on the second end face 123 by gravure printing.

In one or more embodiments, the fog film layer 130 is bonded to the PET substrate layer 120. For example, referring to fig. 4, the PET substrate further includes an adhesive layer 150, the adhesive layer 150 is disposed between the pattern layer 140 and the fog film layer 130, the fog film layer 130 is fixedly connected to the PET substrate layer 120 through the adhesive layer 150, and the pattern layer 140 is intaglio-printed on the PET substrate layer 120, so that the adhesive layer 150 is adhered to the PET substrate layer 120 to be fixed.

The adhesive layer 150 may have good light transmittance to better observe the pattern layer 140. For example, in a particular embodiment, the light transmittance of the adhesive layer 150 is greater than 95%. For example, the adhesive layer 150 may be an imported high temperature resistant environment-friendly bi-component adhesive, which can firmly adhere the fog film layer 130 and the PET substrate layer 120, and has excellent adhesive surface transparency.

Specifically, during the forming process, an image-text is first intaglio-printed on one end surface of the PET substrate layer 120 to form the pattern layer 140, which is the second end surface 123. Then, the matte surface of the matte layer 130 is printed, and after the printing is completed, the printed surface of the matte layer 130 is combined with the second end surface 123 of the PET substrate layer 120 to form a composite layer, and the composite layer is cured. Finally, the other end face of the PET substrate layer 120 is coated with a high temperature resistant silicone release agent by a direct coating method in a coater to form the silicone oil layer 110. And forming the product into a final product heart after cutting.

Above-mentioned PET is compound from type membrane 10, through setting up fog rete 130 to regard the matte of fog rete 130 as the printing face, then, no matter be the printing face keep away from one side of PET stratum basale 120 again or be close to one side of PET stratum basale 120, because the matte has good inking ability, traditional relatively has great promotion from type membrane homoenergetic on resistant alcohol scraping performance.

Further, by disposing the printed surface on the side close to the PET substrate layer 120, the alcohol scratch resistance is greatly enhanced due to the protective effect of the fog film layer 130 on the printed surface.

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 utility model. 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.

Claims

1. A PET composite release film is characterized by comprising a silicone oil layer, a PET substrate layer and a fog film layer, wherein,

the silicon oil layer is formed on the first end face;

2. The PET composite release film according to claim 1, wherein the PET substrate layer is a multi-layer co-extruded polyethylene terephthalate pure white film, and the first end face and the second end face are high-gloss faces.

3. The PET composite release film according to claim 1, wherein the thickness of the PET base layer is 150 um.

4. The PET composite release film according to claim 1, wherein the fog film layer is a fog-faced PET film.

5. The PET composite release film according to claim 1, wherein the thickness of the fog film layer is less than that of the PET base layer.

6. The PET composite release film according to claim 1, wherein the first surface is a matte surface, and the matte film layer is combined with the PET substrate layer after the first surface is printed.

7. The PET composite release film according to claim 1, further comprising a pattern layer, wherein the pattern layer is disposed on the PET substrate layer, and the fog film layer is fixedly connected to the pattern layer.

8. The PET composite release film according to claim 7, wherein the pattern layer is gravure-printed on the second end face.

9. The PET composite release film according to claim 8, further comprising an adhesive layer disposed between the pattern layer and the fog film layer, wherein the fog film layer is fixedly connected to the PET base layer through the adhesive layer.

10. The PET composite release film according to claim 9, wherein the light transmittance of the adhesive layer is greater than 95%.