Multi-hardness co-extrusion polyurethane protective film

Abstract

The utility model provides a multi-hardness coextrusion polyurethane protective film, which relates to the field of polyurethane protective films and comprises a protective layer I, an absorption component I is arranged on one side of the protective layer I, and a protective layer II is arranged at the bottom of the absorption component I. According to the utility model, the protective layer III covers an article, the article is better protected according to the softer performance of the protective layer III which is made of VersaflexTMOM 9-802CL TPE, the coating II is made of sorbitol ester and covers the surface of the transparent PE layer II to absorb static electricity, and the protective layer II in the middle layer is made of a transparent polyurethane elastomer, so that the protective layer III can be used for protecting the article. According to the high tensile strength of the transparent PE layer, an article can be better wrapped, the first coating is made of ethyl 3-diphenyl acrylate and covers the surface of the first transparent PE layer, and ultraviolet rays are absorbed.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane protective films, in particular to a multi-hardness co-extruded polyurethane protective film. Background Art

[0002] A polyurethane protective film is a protective film made based on polyurethane materials. Polyurethane materials have characteristics such as good flexibility, wear resistance, chemical corrosion resistance, and weather resistance. Polyurethane protective films usually have high transparency and can clearly display the appearance of the protected object. A multi-layer co-extruded polyurethane protective film is formed by simultaneously extruding two or more polyurethane materials with different hardnesses to form a protective film with multiple hardness regions.

[0003] In the prior art, the application range of polyurethane protective films is relatively wide. For scenarios with different protection requirements, different polyurethane protective films are needed, and there are also differences in the need for protective films for the same item. The polyurethane protective films in the prior art are difficult to protect multiple situations for the same item, and static electricity will be generated during the use of polyurethane protective films, which affects the protection effect. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the prior art.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A multi-hardness co-extruded polyurethane protective film, comprising: a first protective layer, on one side of the first protective layer, an absorption component one is provided, at the bottom of the absorption component one, a second protective layer is provided, at the bottom of the second protective layer, an absorption component two is provided, and at the bottom of the absorption component two, a third protective layer is provided.

[0006] As a preferred embodiment, the material of the first protective layer is waterborne polyurethane resin PU753.

[0007] As a preferred embodiment, the absorption component one includes a first coating, inside the first coating, a transparent PE layer one is fixedly embedded, and the material of the first coating is 3-diphenylacrylic acid ethyl ester.

[0008] As a preferred embodiment, the material of the second protective layer is transparent polyurethane elastomer.

[0009] As a preferred embodiment, the absorption component two includes a second coating, inside the second coating, a transparent PE layer two is fixedly embedded, one side of the second coating is fixedly installed on the other side of the second protective layer, and the material of the second coating is sorbitan ester.

[0010] As a preferred embodiment, the material of the third protective layer is Versaflex TMOM 9-802CL TPE.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] 1. In the present utility model, when protecting an article, by covering the third protective layer on the surface of the article, since the material of the third protective layer is Versaflex TM OM 9-802CL TPE, it has low hardness, is relatively soft, has good flexibility and elasticity, and high transparency, and can better wrap and protect the article. The material of the middle second protective layer is transparent polyurethane elastomer, which has good light stability, is clear and transparent, has high tensile strength and good energy absorption properties, enabling the multi-hardness co-extruded polyurethane protective film to more clearly show the situation of the article after wrapping. Due to its transparency and high tensile strength, the protective film can better protect the article. The material of the outermost first protective layer is waterborne polyurethane resin PU753, which has characteristics such as high hardness, hydrolysis resistance, good abrasion resistance, high gloss, and good chemical resistance. Due to its high hardness characteristic, the multi-hardness co-extruded polyurethane protective film is more stable when protecting the article, and can also better protect the protected object in different scenarios and for different protected objects, making the multi-hardness co-extruded polyurethane protective film more perfect.

[0013] 2. In the present utility model, a first coating is applied on the fourth transparent PE layer one of the multi-hardness co-extruded polyurethane protective film. Since the material of the first coating is 3-diphenyl ethyl acrylate, it can absorb ultraviolet rays when the protective film protects the article, reducing the impact of ultraviolet rays on the article. A second coating is applied on the surface of the second transparent PE layer two of the multi-hardness co-extruded polyurethane protective film, and its material is sorbitan ester, which has certain antistatic properties and can absorb the static electricity generated during the use of the protective film, reducing the impact of static electricity on the multi-hardness co-extruded polyurethane protective film. Thus, the multi-hardness co-extruded polyurethane protective film can be used better, reducing the impact of static electricity and ultraviolet rays on the protective film, making the multi-hardness co-extruded polyurethane protective film more perfect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A side view of a multi-hardness co-extruded polyurethane protective film provided by the present utility model;

[0015] Figure 2 A cutting view of a multi-hardness co-extruded polyurethane protective film provided by the present utility model;

[0016] Figure 3 A side view of an absorption component of a multi-hardness co-extruded polyurethane protective film provided by the present utility model;

[0017] Figure 4 Second side view of an absorption component of a multi-hardness co-extruded polyurethane protective film provided by the present utility model.

[0018] Legend:

[0019] 1. First protective layer; 2. First absorption component; 201. First coating; 202. First transparent PE layer; 3. Second protective layer; 4. Second absorption component; 401. Second coating; 402. Second transparent PE layer; 5. Third protective layer. Specific implementation mode

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , the present utility model provides a technical solution: a multi-hardness co-extruded polyurethane protective film, including: a first protective layer 1, a first absorption component 2 is arranged on one side of the first protective layer 1, a second protective layer 3 is arranged at the bottom of the first absorption component 2, a second absorption component 4 is arranged at the bottom of the second protective layer 3, and a third protective layer 5 is arranged at the bottom of the second absorption component 4.

[0022] Specifically: by arranging a first absorption component 2 at the bottom of the first protective layer 1, a second protective layer 3 at the bottom of the first absorption component 2, a second absorption component 4 at the bottom of the second protective layer 3, and a third protective layer 5 at the bottom of the second absorption component 4, a multi-hardness co-extruded polyurethane protective film is formed, making the protective effect of the protective film better.

[0023] In one embodiment, the material of the first protective layer 1 is waterborne polyurethane resin PU753.

[0024] Specifically: since the material of the first protective layer 1 is waterborne polyurethane resin PU753, which is a polyester-based polyurethane dispersion, having characteristics such as high hardness, hydrolysis resistance, good wear resistance, high gloss, and good chemical resistance, it can be used in wood coatings, and its appearance is very transparent. It is located at the outermost layer of the multi-hardness co-extruded polyurethane protective film. According to its high-hardness characteristic, it can provide better protection for substances, making the multi-hardness co-extruded polyurethane protective film more perfect.

[0025] In one embodiment, the first absorption component 2 includes a first coating 201, a first transparent PE layer 202 is fixedly embedded inside the first coating 201, and the material of the first coating 201 is ethyl 3-diphenylacrylate.

[0026] Specifically: The coating layer 201 installed on the surface of the transparent PE layer 202 is made of ethyl 3-diphenylacrylate. Ethyl 3-diphenylacrylate, also known as etocrylene, is a common ultraviolet absorber with good chemical stability and extremely low volatility. Coating it on the surface of the transparent PE layer 202 can reduce the impact of ultraviolet rays on the protected items when the multi-hardness co-extruded polyurethane protective film is in use.

[0027] In one embodiment, the material of the second protective layer 3 is a transparent polyurethane elastomer.

[0028] Specifically: Since the material of the second protective layer 3 is a transparent polyurethane elastomer, it is a special polyurethane elastomer with a certain degree of transparency. It can be thermoplastic or thermosetting. Its transparency comes from suppressing the size of the hard segment phase and the growth of crystals, as well as good light stability. It is clear and transparent, has a high tensile strength and good energy absorption. Due to its clear transparency and high tensile strength, the multi-hardness co-extruded polyurethane protective film can better see the protected items and can better surround and protect the items.

[0029] In one embodiment, the second absorption component 4 includes a coating layer 401. A transparent PE layer 402 is fixedly embedded inside the coating layer 401. One side of the coating layer 401 is fixedly installed on the other side of the second protective layer 3. The material of the coating layer 401 is sorbitan ester.

[0030] Specifically: According to the fact that the coating layer 401 installed on the surface of the transparent PE layer 402 is made of sorbitan ester, it has certain antistatic properties and can absorb the static electricity generated when the multi-hardness co-extruded polyurethane protective film is in use, reducing the impact of static electricity when the protective film is in use and enabling the multi-hardness co-extruded polyurethane protective film to be used better.

[0031] In one embodiment, the material of the third protective layer 5 is Versaflex TM OM 9-802CL TPE.

[0032] Specifically: Since the material of the third protective layer 5 is Versaflex TM OM 9-802CL TPE, it has a low hardness, usually around Shore A80, is relatively soft, has good flexibility and elasticity, and high transparency. This material has high light transmittance. Installed on the inner side of the multi-hardness co-extruded polyurethane protective film, due to its low hardness and relatively soft properties, it will not affect the surface of the item when installed on the surface of the item, can better fit the item, provide better protection for the item, and make the multi-hardness co-extruded polyurethane protective film more perfect.

[0033] In one embodiment, one side of the first protective layer 1 is fixedly installed on one side of the first coating 201, one side of the second protective layer 3 is fixedly installed on the other side of the first coating 201, the other side of the second protective layer 3 is fixedly installed on one side of the second coating 401, and one side of the third protective layer 5 is fixedly installed on the other side of the second coating 401.

[0034] Specifically: according to the installation position relationship between the first protective layer 1 and the second protective layer 3 and the first coating 201, and the installation position relationship between the second protective layer 3 and the third protective layer 5 and the second coating 401, the composition relationship of the multi-hardness co-extruded polyurethane protective film can be more intuitively displayed.

[0035] Working principle: When protecting an item, by covering the third protective layer 5 on the surface of the item, according to the material of the third protective layer 5 being Versaflex TM OM 9-802CL TPE, which has a low hardness, is relatively soft, has good flexibility and elasticity, and high transparency, can better wrap and protect the item. Through the middle layer, the second protective layer 3 is made of transparent polyurethane elastomer, which has good light stability, is clear and transparent, has a high tensile strength and good energy absorption, enabling the multi-hardness co-extruded polyurethane protective film to more clearly show the situation of the item after wrapping. Through its transparency and high tensile strength, the protective film can better protect the item. Through the outermost layer, the first protective layer 1 is made of waterborne polyurethane resin PU753, which has characteristics such as high hardness, hydrolysis resistance, good abrasion resistance, high gloss, and good chemical resistance. According to its high hardness characteristic, the multi-hardness co-extruded polyurethane protective film is more stable when protecting the item, enabling the multi-hardness co-extruded polyurethane protective film to better protect the protected object in different scenarios and for different protected objects, making the multi-hardness co-extruded polyurethane protective film more perfect; on the fourth layer, the first transparent PE layer 202 of the multi-hardness co-extruded polyurethane protective film, there is a first coating 201. According to the material of the first coating 201 being ethyl 3-diphenylacrylate, it can absorb ultraviolet rays when the protective film protects the item on the item, reducing the impact of ultraviolet rays on the item. According to the surface of the second transparent PE layer 202 of the multi-hardness co-extruded polyurethane protective film being coated with a second coating 401, whose material is sorbitan ester, it has certain antistatic properties and can absorb the static electricity generated during the use of the protective film, reducing the impact of static electricity on the multi-hardness co-extruded polyurethane protective film, thereby enabling the multi-hardness co-extruded polyurethane protective film to be better used, reducing the impact of static electricity and ultraviolet rays on the protective film, and making the multi-hardness co-extruded polyurethane protective film more perfect.

[0036] The above are only the preferred embodiments of the present utility model, and are not intended to limit the present utility model in other forms. Any person skilled in the relevant art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as they do not depart from the technical solution content of the present utility model, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A multi-hardness co-extruded polyurethane protective film, characterized in that, Comprising: The first protective layer (1), on one side of the first protective layer (1), there is a first absorption component (2) arranged, at the bottom of the first absorption component (2), there is a second protective layer (3) arranged, at the bottom of the second protective layer (3), there is a second absorption component (4) arranged, at the bottom of the second absorption component (4), there is a third protective layer (5) arranged. The material of the first protective layer (1) is waterborne polyurethane resin PU753, the material of the second protective layer (3) is transparent polyurethane elastomer, and the material of the third protective layer (5) is Versaflex TM OM 9-802CL TPE.

2. The multi-hardness co-extruded polyurethane protective film according to claim 1, wherein: The first absorption component (2) includes a first coating (201), inside which a first transparent PE layer (202) is fixedly embedded, and one side of the first protective layer (1) is fixedly installed on one side of the first coating (201).

3. The multi-hardness co-extruded polyurethane protective film according to claim 1, characterized in that: One side of the second protective layer (3) is fixedly installed on the other side of the first coating (201).

4. A multi-hardness co-extruded polyurethane protective film according to claim 1, characterized in that: The second absorption component (4) includes a second coating (401), inside which a second transparent PE layer (402) is fixedly embedded, and one side of the second coating (401) is fixedly installed on the other side of the second protective layer (3).

5. A multi-hardness co-extruded polyurethane protective film according to claim 1, characterized in that: One side of the third protective layer (5) is fixedly installed on the other side of the second coating (401).

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