CN211000344U

CN211000344U - Flexible TPU explosion-proof protection film

Info

Publication number: CN211000344U
Application number: CN201921803801.6U
Authority: CN
Inventors: 罗启云; 邵嘎; 刘兵; 陈智仁; 谢伟峡
Original assignee: Jiangxi Boc Technology Group Co ltd
Current assignee: Jiangxi Boc Technology Group Co ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-07-14
Anticipated expiration: 2029-10-25

Abstract

The utility model discloses a flexible TPU explosion-proof protection film, include protective layer, use layer and the release layer of laminating in proper order from last to lower, the protective layer includes PET rete and the silica gel layer of laminating in proper order from last to lower, use the layer including according to H/C sclerosis layer, second TPU rete, first TPU rete and reticulation pressure sensitive adhesive layer of laminating in proper order from last to lower. The utility model discloses have concurrently and prevent scraping characteristics such as wear-resisting performance, explosion-proof effect, exhaust performance are good and feel soft.

Description

Flexible TPU explosion-proof protection film

The technical field is as follows:

the utility model relates to a protection film technical field specifically relates to a flexible TPU explosion-proof protection film.

Background art:

with the rapid development of mobile phone and automobile industries, an O L ED curved touch screen is a trend, and the traditional PET protective film has the defects of hard hardness, poor attaching effect, easy rebound and falling, and can not meet the development requirements of an O L ED curved screen, so that the TPU flexible explosion-proof protective film comes into force.

TPU is also called thermoplastic polyurethane elastomer, and is one of the most widely applied materials of the prior curved screen protective film due to outstanding bearing capacity, impact resistance and shock absorption performance, soft hand feeling, environmental protection and no toxicity, so that TPU is always favored by consumers. However, the TPU flexible film has poor scratch resistance and abrasion resistance, the surface of the TPU flexible film is easily scratched, and bubbles generated when the flexible film is attached to a screen are not easily discharged, thereby affecting the beauty of the screen. Meanwhile, the TPU film layer with high molecular weight has good elasticity, is easy to rebound and is not easy to bend and shape.

In view of the above-mentioned defects, the designer actively makes research and innovation to create a new flexible TPU explosion-proof protective film with a novel structure, so that the protective film has more industrial utilization value.

The utility model has the following contents:

the utility model discloses a problem that prior art exists is aimed at solving, provides a structure and sets up rationally, feels soft, and wear-resisting preventing scrapes, the exhaust nature is good and attached performance is good flexible TPU explosion-proof protection film.

The utility model relates to an explosion-proof protection film of flexible TPU, include protective layer, service layer and the release layer of laminating in proper order from last to lower, the protective layer includes PET rete and the silica gel layer of laminating in proper order from last to lower, the service layer includes according to H/C sclerosis layer, second TPU rete, first TPU rete and reticulation pressure sensitive adhesive layer of laminating in proper order from last to lower.

By the technical scheme, the utility model combines the seven-layer structure to form the integral membrane, has reasonable design structure, effectively protects the use layer from being scratched or damaged by external force action through the protective layer and the release layer before use, and ensures the product quality; when the adhesive is pasted, the release layer is peeled, the reticulate pressure-sensitive adhesive layer of the using layer can be smoothly adsorbed on the surface of an object to be pasted without air bubbles, and the adhesive has good air exhaust performance, high laminating degree and no residual adhesive; when the protective film is used, the scratch resistance and the friction resistance of the protective film can be improved by the H/C hardened layer in the use layer, the bearing capacity, the impact resistance and the shock absorption performance of the TPU layer are outstanding, and when the protective film is subjected to explosion or large impact, the multiple layers of TPU have excellent buffering effect and explosion-proof effect, and are safe and reliable.

Through the scheme, the utility model discloses an explosion-proof protection film of flexible TPU has utilized TPU's characteristics that flexibility is good, impact resistance and damping performance are outstanding well, simultaneously, has improved TPU's the wear resistance of preventing scraping through coating H/C sclerosis layer, and the reticulation pressure sensitive adhesive possesses good air discharge, the laminating nature, thereby the utility model discloses a reasonable structural design has concurrently and prevents scraping characteristics such as wear-resisting friction performance, explosion-proof effect, air discharge performance are good.

The utility model adopts a two-layer TPU structure; the TPU of the first TPU film layer (21) has high polymerization degree, high elastic modulus, high breaking strength and good impact resistance, and has the defect of poor flexibility; the TPU of the second TPU film layer (22) has low polymerization degree, good flexibility and smooth hand feeling, the defect is poor impact resistance, and the flexibility and the impact resistance can be met when the TPU and the film layer are combined together.

Preferably, the oligomer of the first TPU film layer has a molecular weight of 20000-30000 and a thickness of 35-60 μm.

Preferably, the oligomer of the second TPU film layer has a molecular weight of 5000-.

As a preference of the scheme, the first TPU film layer (21) and the second TPU film layer (22) can be arranged on and under the base layer and can be interchanged.

Preferably, the reticulated pressure-sensitive adhesive layer is an acrylic adhesive layer or a silica gel layer, and the thickness of the reticulated pressure-sensitive adhesive layer is 40-60 micrometers.

Preferably, the upper surface of the reticulated pressure-sensitive adhesive layer is of a regular concave-convex surface structure.

Preferably, the raised structure is arranged on the upper surface of the reticulated pressure-sensitive adhesive layer, and the cross section of the raised structure is of a trapezoidal structure or a semicircular structure.

Preferably, the thickness of the H/C hardened layer is 2-5 microns.

Preferably, the release layer is a PET film, and the thickness of the release layer is 38 to 55 micrometers.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Description of the drawings:

the drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic structural diagram of the present invention.

The specific implementation mode is as follows:

the following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

The following refers to fig. 1.

The utility model relates to an explosion-proof protection film of flexible TPU, include protective layer 1, service layer 2 and release layer 3 that laminate in proper order from last to down, protective layer 1 includes PET rete 11 and silica gel layer 12 that laminate in proper order from last to down, service layer 2 includes H/C sclerosis layer 23, second TPU rete 22, first TPU rete 21 and reticulation pressure sensitive adhesive layer 24 that laminate in proper order from last to down, H/C sclerosis layer thickness is 2-5 microns, the oligomer molecular weight of first TPU rete 20000 slab 30000, thickness is 35-60 microns, the oligomer molecular weight of second TPU rete is 5000 slab 8000, and thickness is 30-70 microns, reticulation pressure sensitive adhesive layer is acrylic adhesive layer or silica gel layer, and thickness is 40-60 microns, and reticulation pressure sensitive adhesive layer upper surface is regular concave-convex surface structure, the upper surface of the reticulated pressure-sensitive adhesive layer is provided with a raised structure (not shown), the cross section of the raised structure is of a trapezoidal structure or a semicircular structure (not shown), and the release layer 3 is a PET film and has a thickness of 38-55 microns.

The utility model combines the seven-layer structure to form an integral membrane, has reasonable design structure, effectively protects the use layer 2 from being scratched or damaged by external force before use through the protective layer 1 and the release layer 3 before use, and ensures the product quality; when the adhesive is pasted, the release layer 3 is peeled off, the reticulated pressure-sensitive adhesive layer 24 of the layer 2 can be flatly and bubble-free adsorbed on the surface of an object to be pasted, and the adhesive has good air release property, high pasting degree and no residual adhesive; when the protective film is used, the scratch resistance and the friction resistance of the protective film can be improved by using the H/C hardened layer 23 in the layer 2, the bearing capacity, the impact resistance and the shock absorption performance of the TPU double layers are outstanding, and when the protective film is subjected to explosion or large impact, the TPU multiple layers have excellent buffering effect and explosion-proof effect, and are safe and reliable.

To sum up, the utility model discloses an explosion-proof protection film of flexible TPU has utilized TPU's characteristics that flexibility is good, impact resistance and damping performance are outstanding well, simultaneously, has improved TPU's the wear resistance of preventing scraping through coating H/C sclerosis layer, and the reticulation pressure sensitive adhesive possesses good air discharge, the laminating nature, thereby the utility model discloses a reasonable structural design has concurrently and prevents scraping characteristics such as wear-resisting friction performance, explosion-proof effect, air discharge performance are good and feel soft.

The utility model provides an explosion-proof protection film of flexible TPU only does the utility model discloses a specific implementation mode, nevertheless the utility model discloses a protection scope is not limited to this, and any technical staff familiar with this technical field is in the utility model discloses a technical scope, can think easily that changes or replacement, all should cover within the protection scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides an explosion-proof protection film of flexible TPU, includes protective layer (1), use layer (2) and from type layer (3) of laminating in proper order from last to lower, its characterized in that: protective layer (1) includes PET rete (11) and silica gel layer (12) that laminate in proper order from last to bottom, use layer (2) including H/C sclerosis layer (23), second TPU rete (22), first TPU rete (21) and reticulation pressure sensitive adhesive layer (24) that laminate in proper order from last to bottom.

2. The flexible TPU explosion proof protective film of claim 1, wherein:

the using layer (2) is tightly attached by an H/C hardening layer (23), a second TPU film layer (22), a first TPU film layer (21) and a reticulated pressure sensitive adhesive layer (24), and the peeling force between the layers is more than 1500gf/25 mm.

3. The flexible TPU explosion proof protective film of claim 1, wherein: the reticulate pattern pressure-sensitive adhesive layer (24) is an acrylic adhesive layer or a silica gel layer, and the thickness of the reticulate pattern pressure-sensitive adhesive layer is 20-60 micrometers.

4. A flexible TPU explosion proof protective film according to claim 1 or 3, characterized in that: the upper surface of the reticulate pattern pressure sensitive adhesive layer (24) is of a regular concave-convex surface structure.

5. The flexible TPU explosion proof protective film of claim 4, wherein: the upper surface of the reticulate pattern pressure sensitive adhesive layer (24) is provided with a raised structure, and the cross section of the raised structure is of a trapezoidal structure or a semicircular structure.

6. The flexible TPU explosion proof protective film of claim 2, wherein: the oligomer of the first TPU film layer (21) has a molecular weight of 20000-30000 and a thickness of 35-60 microns.

7. The flexible TPU explosion proof protective film of claim 2, wherein: the oligomer of the second TPU film layer (22) has a molecular weight of 5000-.

8. The flexible TPU explosion proof protective film of claim 2, wherein: the thickness of the H/C hardened layer (23) is 2-5 microns.

9. The flexible TPU explosion proof protective film of claim 1, wherein: the release layer (3) is a PET film, and the thickness is 38-55 microns.