CN218842024U

CN218842024U - Degradable cell-phone screen protection film

Info

Publication number: CN218842024U
Application number: CN202222855734.0U
Authority: CN
Inventors: 严明发
Original assignee: Dongguan Zhengrong Optical Technology Co ltd
Current assignee: Dongguan Zhengrong Optical Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-04-11
Anticipated expiration: 2032-10-28

Abstract

The utility model belongs to the technical field of the screen protection film, concretely relates to degradable cell-phone screen protection film, including the biodegradable layer, biodegradable layer one surface is provided with the TPU resin layer, is provided with pressure sensitive adhesive layer on another surface on biodegradable layer, and wherein, the thickness on biodegradable layer is 50~150 mu m. The utility model provides a pair of degradable cell-phone screen protection film, but its material that adopts complete biodegradation has covered the surperficial crystal point and the orange peel line on biodegradable layer as the main material, has the TPU resin layer in the surface coating on biodegradable layer, covers the surperficial crystal point and the orange peel line on biodegradable layer, plays the smooth effect in reinforcing biodegradable layer surface simultaneously, has the pressure sensitive adhesive layer in another surface coating on biodegradable layer, has strengthened the adsorptivity of protection film for the protection film can closely laminate on the screen.

Description

Degradable cell-phone screen protection film

Technical Field

The utility model belongs to the technical field of the screen protection film, concretely relates to degradable cell-phone screen protection film.

Background

In various industrial fields, a protective film is required to protect the surface of a product, the turnover of a production process, the shipment of the product and the use of the product, for example, in the shipment process of a mobile phone, the protective film is required to protect the mobile phone from water, impact and collision so as to reduce the production of defective products. At present, the common mobile phone screen protective film is made of common materials such as PET (polyethylene terephthalate), glass and the like, particularly a glass toughened film, is extremely pollution to the environment from manufacturing to using and is completely undegradable, and the protective film made of the PET material can be degraded underground after being used for 30 to 100 years.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: aiming at the defects of the prior art, the degradable mobile phone screen protective film is provided, the protective film can be completely degraded under natural conditions, and the degradation time is greatly reduced.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a degradable mobile phone screen protective film comprises a biodegradable layer, wherein a TPU resin layer is arranged on one surface of the biodegradable layer, a pressure-sensitive adhesive layer is arranged on the other surface of the biodegradable layer, and the thickness of the biodegradable layer is 50-150 micrometers.

Further, the TPU composite material further comprises a self-repairing coating, and the self-repairing coating is arranged on the surface, facing away from the biodegradable layer, of the TPU resin layer.

Further, the biodegradable layer is a PLA polylactic acid basement membrane.

Further, the thickness of the biodegradable layer is 100-120 um.

Further, the material of the pressure-sensitive adhesive layer comprises acrylic resin.

Further, the thickness of the pressure-sensitive adhesive layer is 10-20 μm.

Further, the thickness of the TPU resin layer is 10-15 μm.

Further, the pressure-sensitive adhesive layer further comprises a PLA release film, and the PLA release film is arranged on the surface of the pressure-sensitive adhesive layer.

Furthermore, the self-repairing coating is made of modified polyurethane resin, and the thickness of the self-repairing coating is 10-25 microns.

Further, the thickness of the PLA release film is 50-75 μm.

The beneficial effects of the utility model reside in that: a degradable mobile phone screen protective film comprises a biodegradable layer, wherein a TPU resin layer is arranged on one surface of the biodegradable layer, a pressure-sensitive adhesive layer is arranged on the other surface of the biodegradable layer, and the thickness of the biodegradable layer is 50-150 micrometers. The utility model provides a pair of degradable cell-phone screen protection film, but its material that adopts complete biodegradation has covered the surperficial crystal point and the orange peel line on biodegradable layer as the main material, has the TPU resin layer in the surface coating on biodegradable layer, covers the surperficial crystal point and the orange peel line on biodegradable layer, plays the smooth effect in reinforcing biodegradable layer surface simultaneously, has the pressure sensitive adhesive layer in another surface coating on biodegradable layer, has strengthened the adsorptivity of protection film for the protection film can closely laminate on the screen. The application provides a protection film, protection film surface is level and smooth, can degrade 60% in one year under natural condition, and 3 ~ 5 years can degrade completely, and then solved current protection film nondegradable or the long problem of degradation time.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a degradable mobile phone screen protective film in an embodiment of the present invention;

wherein the reference numerals are as follows:

1. a biodegradable layer; 2. a TPU resin layer; 3. a pressure-sensitive adhesive layer; 4. self-repairing the coating; 5. PLA release films.

Detailed Description

As used in the specification and in the claims, certain terms are used to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. "substantially" means within an acceptable error range, and a person skilled in the art can solve the technical problem within a certain error range to substantially achieve the technical effect.

In the description of the application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention.

The present invention will be described in further detail with reference to fig. 1, but the present invention is not limited thereto.

The inventor finds that the materials of the protective film on the market are mainly PET and glass, however, the toughened glass film has great pollution to the environment from the manufacturing to the use and is not degradable at all, and the protective film made of the PET material can be degraded underground after being used for 30 to 100 years.

Based on this, the inventor considers that a PLA material is used to replace materials such as PET and glass which are not easily degraded to form the protective film, however, in the process of production research and development, the inventor finds that the existing PLA material has a rough surface, cannot reach the optical level, is not scratch-resistant and fingerprint-resistant, and cannot be used on the surface of a screen for a long time, and secondly, the PLA material cannot resist high temperature, can only be produced below 60 ℃, and is difficult to be applied to the screen.

In view of the above problems, the inventor has proposed a solution after research, such as the embodiment of the present invention provides a degradable mobile phone screen protective film, which includes a biodegradable layer 1, a TPU resin layer 2 is disposed on one surface of the biodegradable layer 1, and a pressure sensitive adhesive layer 3 is disposed on the other surface of the biodegradable layer 1, wherein the thickness of the biodegradable layer 1 is 50-150 μm. In this embodiment, adopt the material that can completely biodegradable (PLA polylactic acid) as the main material, at biodegradable layer 1's a surface coating has TPU polyurethane resin layer, utilize TPU polyurethane resin layer to cover biodegradable layer 1's surface crystal point and orange peel line, play the smooth effect in reinforcing biodegradable layer 1 surface simultaneously, at biodegradable layer 1's another surface coating has pressure sensitive adhesive layer 3, has strengthened the adsorptivity of protection film for the protection film can closely laminate on the screen. The application provides a protection film, protection film surface is level and smooth, can degrade 60% in one year under natural condition, and 3 ~ 5 years can degrade completely, and then solved current protection film nondegradable or the long problem of degradation time.

In this embodiment, the degradable mobile phone screen protective film further comprises a self-repairing coating 4, and the self-repairing coating 4 is arranged on the side of the TPU resin layer 2 opposite to the biodegradable layer 1. The main component of the self-repairing coating 4 is modified polyurethane resin, and in the embodiment, the self-repairing coating 4 has the effects of oil stain resistance, fingerprint resistance, scratch resistance and self-repairing, so that the performance of the protective film can be improved, and the protective film can prevent fingerprints and scratches and the like.

In this embodiment, the thickness of the biodegradable layer 1 is preferably 100 to 120um. More specifically, the optimal thickness of the biodegradable layer 1 is 100 μm, which is most suitable for corona treatment.

In the embodiment, the pressure-sensitive adhesive layer 3 is made of acrylic pressure-sensitive adhesive through coating, drying and post curing, and more specifically, the thickness of the pressure-sensitive adhesive layer 3 is 10 to 20 μm. In the present embodiment, the optimum thickness of the pressure-sensitive adhesive layer 3 is 20 μm.

In this embodiment, the thickness of the TPU resin layer 2 is 10 to 15 μm.

In this embodiment, in order to protect the pressure-sensitive adhesive layer 3, the surface of the pressure-sensitive adhesive layer 3 is covered with a PLA release film 5, and the thickness of the PLA release film 5 is 50 to 75 μm. More specifically, a layer of silicone oil with the thickness of 0 to 5 microns is coated on the surface of the PLA release film 5 by a light curing method to serve as a release agent, and then the PLA release film is covered on the surface of the pressure-sensitive adhesive layer 3.

In this embodiment, the self-repair coating 4 is made of a modified urethane resin, and the thickness of the self-repair coating 4 is 10 to 25 μm.

For further explanation, the embodiment further provides a preparation method of the degradable mobile phone screen protective film, which comprises the following specific steps:

step 1: selecting a PLA polylactic acid basal membrane with the thickness of 100 mu m as a biodegradable layer 1;

and 2, step: coating a TPU resin layer 2 with the thickness of 10-15 mu m on one surface of the biodegradable layer 1 by a photocuring method, and covering crystal points and orange peel on the surface of the PLA polylactic acid base film; the coating by adopting the light-curing method has no higher requirement on the temperature, the curing temperature is low, and the defect that the PLA does not resist temperature can be effectively overcome;

and step 3: the surface of the TPU resin layer 2 is coated with a self-repairing coating 4 which is 10-15 mu m thick and mainly comprises modified polyurethane, and the coating has the effects of oil stain resistance, fingerprint resistance, scratch resistance and self-repairing;

and 4, step 4: coating acrylic resin with the thickness of 10-20 mu m on the other surface of the biodegradable layer 1 to serve as a pressure-sensitive adhesive layer 3, wherein the coating thickness of 20 mu m is optimal;

and 5: the release film is made of PLA material, a layer of silicone oil with 0-5 mu m is coated on the surface of the release film as a release agent by a photocuring method, and then the PLA release film 5 is covered on the surface of the pressure-sensitive adhesive layer 3.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should understand that the embodiments as a whole may be combined as appropriate to form other embodiments understood by those skilled in the art.

Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A degradable cell-phone screen protection film which characterized in that: comprises that

The biodegradable film comprises a biodegradable layer (1), wherein a TPU resin layer (2) is arranged on one surface of the biodegradable layer (1), a pressure-sensitive adhesive layer (3) is arranged on the other surface of the biodegradable layer (1), and the thickness of the biodegradable layer (1) is 50 to 150 micrometers.

2. The degradable mobile phone screen protective film of claim 1, wherein: the biodegradable film is characterized by further comprising a self-repairing coating (4), wherein the self-repairing coating (4) is arranged on one side, back to the biodegradable layer (1), of the TPU resin layer (2).

3. The degradable mobile phone screen protective film according to claim 1, wherein: the biodegradable layer (1) is a PLA polylactic acid basement membrane.

4. The degradable mobile phone screen protective film according to claim 1, wherein: the thickness of the biodegradable layer (1) is 100 to 120um.

5. The degradable mobile phone screen protective film according to claim 1, wherein: the thickness of the pressure-sensitive adhesive layer (3) is 10 to 20 micrometers.

6. The degradable mobile phone screen protective film according to claim 1, wherein: the thickness of the TPU resin layer (2) is 10 to 15 mu m.

7. The degradable mobile phone screen protective film according to claim 1, wherein: still include PLA from type membrane (5), PLA is in from type membrane (5) setting pressure sensitive adhesive layer (3)'s surface.

8. The degradable mobile phone screen protection film according to claim 2, wherein: the thickness of the self-repairing coating (4) is 10 to 25 mu m.

9. The degradable mobile phone screen protective film according to claim 7, wherein: the thickness of the PLA release film (5) is 50 to 75 mu m.