Yellowing-resistant antioxidant PVC (polyvinyl chloride) film

Abstract

The utility model provides an anti-yellowing anti-oxidation PVC (polyvinyl chloride) film which comprises a base layer, the base layer comprises a supporting layer and a fixing layer, an upper cooling material layer, an ultraviolet absorption layer and an upper protective layer are respectively arranged on the upper portion of the supporting layer from bottom to top, and a lower cooling material layer, a moisture-proof and mildew-proof layer and a lower protective layer are respectively arranged on the lower portion of the fixing layer from top to bottom. The upper cooling material layer and the lower cooling material layer are both polyimide coatings with the thickness of 25-50 microns. The upper cooling material layer and the lower cooling material layer are polyimide coatings, and the polyimide coatings have excellent high temperature resistance, so that the surface temperature of the film can be reduced, and the influence of temperature change on the film is reduced. The ultraviolet absorption layer absorbs ultraviolet rays, so that the PVC film is prevented from being degraded and aged by the ultraviolet rays, and the quality and color of the film are protected. The moisture-proof and mildew-proof layer prevents water vapor erosion and mildew growth, the durability of the film is protected, and the service life of the film is prolonged.

Description

Technical Field

[0001] The utility model relates to a PVC film, in particular to a yellowing-resistant and oxidation-resistant PVC film, belonging to the technical field of PVC films. Background Art

[0002] In the field of modern construction and engineering, polyvinyl chloride (PVC) membranes are widely used in roof covering, underground waterproofing, ground paving and other aspects. They have the advantages of light weight, convenient construction and low cost.

[0003] However, traditional PVC films have some problems during long-term use, such as yellowing, aging due to ultraviolet erosion, and easy moisture and mold. Utility Model Content

[0004] Based on the above background, the purpose of the present invention is to provide a yellowing-resistant and anti-oxidation PVC film that can effectively solve the problems existing in traditional PVC films and has a long service life, thereby solving the problems described in the background technology.

[0005] In order to achieve the above-mentioned utility model purpose, the utility model provides the following technical solutions:

[0006] A yellowing-resistant and anti-oxidation PVC film, comprising a base layer, the base layer comprising a support layer and a fixing layer, the upper portion of the support layer being provided with an upper cooling material layer, an ultraviolet absorption layer and an upper protective layer from bottom to top, and the lower portion of the fixing layer being provided with a cooling material layer, a moisture-proof and mildew-proof layer and a lower protective layer from top to bottom;

[0007] The upper cooling material layer and the lower cooling material layer are both polyimide coatings with a thickness of 25 to 50 μm.

[0008] The supporting layer of the base layer can provide overall support and structural stability for the membrane, enabling it to withstand the pressure and force of the external environment and prevent the membrane from deforming or rupturing during use. The fixing layer of the base layer, as the bottom of the base layer, can be tightly combined with other functional layers to ensure the firmness and stability of the entire membrane structure.

[0009] The upper cooling material layer and the lower cooling material layer are polyimide coatings. The polyimide coatings have excellent high temperature resistance, can reduce the surface temperature of the membrane, and reduce the impact of temperature changes on the membrane.

[0010] The UV absorption layer is used to absorb UV rays and prevent the degradation and aging of the PVC film by UV rays, thereby protecting the quality and color of the film.

[0011] The moisture-proof and mildew-proof layer is used to prevent water vapor erosion and mildew growth, effectively protecting the durability of the membrane and extending its service life.

[0012] The upper protective layer and the lower protective layer can protect the entire membrane structure, prevent external factors from directly damaging the functional layer, and further extend the service life of the membrane.

[0013] Preferably, an adhesive layer is provided on the side of the lower protective layer away from the moisture-proof and mildew-proof layer.

[0014] It can increase the adhesion of the film, ensure that the film is more firmly attached to the surface of the covering, and prevent the film from falling off or shifting during use.

[0015] Preferably, the moisture-proof and mildew-proof layer is woven from mesh moisture-proof and mildew-proof fibers.

[0016] Preferably, the thickness of the base layer is 1.5 to 2.5 mm.

[0017] Preferably, the thickness of the ultraviolet absorbing layer is 10-13 μm.

[0018] Preferably, the thickness of the upper protective layer and the lower protective layer are both 10-15 μm.

[0019] Preferably, the adhesive layer has a thickness of 8 to 12 μm.

[0020] Preferably, the moisture-proof and mildew-proof layer has a thickness of 10 to 15 μm.

[0021] Compared with the prior art, the utility model has the following advantages:

[0022] The utility model discloses a yellowing-resistant and anti-oxidation PVC film, which uses the support layer of the base layer to provide the overall support and structural stability of the film, so that it can withstand the pressure and force of the external environment and prevent the film from being deformed or broken during use. The fixing layer of the base layer is the bottom of the base layer, which is closely combined with other functional layers to ensure the firmness and stability of the entire film structure. The upper cooling material layer and the lower cooling material layer are polyimide coatings, and the polyimide coating has excellent high temperature resistance, which can reduce the surface temperature of the film and reduce the impact of temperature changes on the film. The ultraviolet absorption layer absorbs ultraviolet rays to prevent ultraviolet rays from degrading and aging the PVC film, and protects the quality and color of the film. The moisture-proof and mildew-proof layer prevents water vapor erosion and mildew growth, protects the durability of the film, and extends its service life. The upper protective layer and the lower protective layer protect the entire membrane structure, prevent external factors from directly damaging the functional layer, and further extend the service life of the film. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the yellowing-resistant and oxidation-resistant PVC film of the utility model.

[0025] In the figure: 1, base layer; 101, support layer; 102, fixing layer; 2, upper cooling material layer; 3, ultraviolet absorption layer; 4, upper protective layer; 5, lower cooling material layer; 6, moisture-proof and mildew-proof layer; 7, lower protective layer; 8, adhesive layer. DETAILED DESCRIPTION

[0026] The technical solution of the utility model is further described in detail below through specific embodiments and in combination with the accompanying drawings. It should be understood that the implementation of the utility model is not limited to the following embodiments, and any form of modification and / or change made to the utility model will fall within the protection scope of the utility model.

[0027] In the present invention, unless otherwise specified, all parts and percentages are weight units, and the equipment and raw materials used can be purchased from the market or are commonly used in the field. The methods in the following embodiments, unless otherwise specified, are conventional methods in the field. The components or equipment in the following embodiments, unless otherwise specified, are universal standard parts or components known to those skilled in the art, and their structures and principles are known to those skilled in the art through technical manuals or conventional experimental methods.

[0028] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. In the following detailed description, for ease of explanation, many specific details are described to provide a comprehensive understanding of the embodiments of the present invention. However, one or more embodiments may also be implemented by those skilled in the art without these specific details.

[0029] like Figure 1 As shown, a yellowing-resistant and anti-oxidation PVC film includes a base layer 1, and the thickness of the base layer 1 is 1.5 to 2.5 mm. The base layer 1 includes a support layer 101 and a fixing layer 102. The support layer 101 of the base layer 1 can provide overall support and structural stability for the film, so that it can withstand the pressure and force of the external environment and prevent the film from being deformed or broken during use. The fixing layer 102 of the base layer 1, as the bottom of the base layer 1, can be closely combined with other functional layers to ensure the firmness and stability of the entire film structure.

[0030] The upper cooling material layer 2, the ultraviolet absorbing layer 3 and the upper protective layer 4 are respectively arranged on the upper part of the support layer 101 from bottom to top. The thickness of the ultraviolet absorbing layer 3 is 10-13 μm. The ultraviolet absorbing layer 3 is used to absorb ultraviolet rays to prevent ultraviolet rays from degrading and aging the PVC film, thereby protecting the quality and color of the film.

[0031] The lower part of the fixed layer 102 is provided with a cooling material layer 5, a moisture-proof and mildew-proof layer 6 and a lower protective layer 7 from top to bottom. The moisture-proof and mildew-proof layer 6 has a thickness of 10 to 15 μm. The moisture-proof and mildew-proof layer 6 is woven from a mesh of moisture-proof and mildew-proof fibers to prevent water vapor erosion and mildew growth, effectively protecting the durability of the membrane and extending its service life.

[0032] The upper cooling material layer 2 and the lower cooling material layer 5 are both polyimide coatings with a thickness of 25 to 50 μm. The upper cooling material layer 2 and the lower cooling material layer 5 are polyimide coatings, which have excellent high temperature resistance, can reduce the surface temperature of the membrane, and reduce the impact of temperature changes on the membrane.

[0033] The thickness of the upper protective layer 4 and the lower protective layer 7 are both 10-15 μm. The upper protective layer 4 and the lower protective layer 7 can protect the entire membrane structure, prevent external factors from directly damaging the functional layer, and further extend the service life of the membrane.

[0034] An adhesive layer 8 is provided on the side of the lower protective layer 7 away from the moisture-proof and mildew-proof layer 6. The thickness of the adhesive layer 8 is 8 to 12 μm. The adhesive layer 8 can increase the adhesion of the film, ensure that the film is more firmly attached to the surface of the covering, and prevent the film from falling off or shifting during use.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A yellowing-resistant and anti-oxidation PVC film, characterized in that: The yellowing-resistant and anti-oxidation PVC film comprises a base layer (1), wherein the base layer (1) comprises a support layer (101) and a fixing layer (102), wherein an upper cooling material layer (2), an ultraviolet absorption layer (3) and an upper protective layer (4) are respectively arranged on the upper part of the support layer (101) from bottom to top, and a cooling material layer (5), a moisture-proof and mildew-proof layer (6) and a lower protective layer (7) are respectively arranged on the lower part of the fixing layer (102) from top to bottom; The upper cooling material layer (2) and the lower cooling material layer (5) are both polyimide coatings with a thickness of 25 to 50 μm.

2. The yellowing-resistant and oxidation-resistant PVC film according to claim 1, characterized in that: An adhesive layer (8) is provided on the side of the lower protective layer (7) away from the moisture-proof and mildew-proof layer (6).

3. The yellowing-resistant and oxidation-resistant PVC film according to claim 1, characterized in that: The moisture-proof and mildew-proof layer (6) is woven from mesh moisture-proof and mildew-proof fibers.

4. The yellowing-resistant and oxidation-resistant PVC film according to claim 1, characterized in that: The thickness of the base layer (1) is 1.5 to 2.5 mm.

5. The yellowing-resistant and oxidation-resistant PVC film according to claim 1, characterized in that: The thickness of the ultraviolet absorbing layer (3) is 10 to 13 μm.

6. The yellowing-resistant and oxidation-resistant PVC film according to claim 1, characterized in that: The thickness of the upper protective layer (4) and the lower protective layer (7) are both 10 to 15 μm.

7. The yellowing-resistant and oxidation-resistant PVC film according to claim 2, characterized in that: The thickness of the adhesive layer (8) is 8 to 12 μm.

8. The yellowing-resistant and oxidation-resistant PVC film according to claim 3, characterized in that: The thickness of the moisture-proof and mildew-proof layer (6) is 10 to 15 μm.

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