PET (Polyethylene Terephthalate) composite film structure

Abstract

The utility model discloses a PET (Polyethylene Terephthalate) composite film structure which comprises a composite layer which is of a transparent structure and is formed by stacking a plurality of materials, the protective layers respectively cover the upper part and the lower part of the composite layer and play a role in protecting the composite layer, the composite layer (1) comprises a polyimide film (3) and a polyethylene film (4), a PET ultraviolet-proof film (6) is arranged between the polyimide film (3) and the polyethylene film (4), and the polyimide film (3) and the polyethylene film (4) are formed through hot pressing. The corresponding surfaces of the polyimide film (3) and the polyethylene film (4) are thinned to form a mounting cavity (5), and the PET ultraviolet-proof film (6) is arranged in the mounting cavity (5). According to the utility model, the PET ultraviolet-proof film is arranged, so that the material can be effectively prevented from being damaged by ultraviolet rays; by arranging the protective layer, the composite layer can be prevented from being influenced by physical damage and external impurities, so that the service life of the composite film is prolonged.

Description

Technical Field

[0001] The utility model relates to a composite film, in particular to a PET composite film structure. Background Art

[0002] PET composite film is a widely used material in the packaging field, with good transparency, strength and durability. However, in some special applications, such as outdoor advertising, architectural glass and other fields, PET composite film needs to have better UV protection and protection to ensure the quality and life of the packaged items. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a PET composite film structure to solve the problems existing in the background technology.

[0004] The PET composite film structure of the utility model is realized by the following technical solutions, including:

[0005] A composite layer, wherein the composite layer is a transparent structure and is formed by stacking multiple materials;

[0006] The protective layer covers the upper and lower parts of the composite layer respectively, and plays a role in protecting the composite layer.

[0007] As a preferred technical solution, the composite layer includes a polyimide film and a polyethylene film, a PET anti-ultraviolet film is arranged between the polyimide film and the polyethylene film, and the polyimide film and the polyethylene film are formed by heat pressing.

[0008] As a preferred technical solution, the corresponding surfaces of the polyimide film and the polyethylene film are thinned to form a mounting cavity, and the PET anti-ultraviolet film is arranged in the mounting cavity.

[0009] As a preferred technical solution, the protective layer is composed of a polyester film, and the polyester film and the composite layer are fixed by heat pressing.

[0010] As a preferred technical solution, the thickness of the polyimide film is 0.5-5 μm.

[0011] As a preferred technical solution, the thickness of the polyethylene film is 5-30 μm.

[0012] As a preferred technical solution, the thickness of the polyester film is 10-50 μm.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model can effectively prevent ultraviolet rays from damaging materials by providing a PET anti-ultraviolet film.

[0015] 2. The utility model can prevent the composite layer from being physically damaged and affected by external impurities by providing a protective layer, thereby extending the service life of the composite film.

[0016] 3. The utility model forms a tight bond by means of hot pressing, which can ensure the overall stability and durability of the composite layer.

[0017] 4. The utility model can make the composite layer have better light transmittance and toughness by selecting the specific thickness range of the polyimide film and the polyethylene film.

[0018] 5. The utility model can ensure that the protective layer 2 has sufficient protective effect by selecting a specific thickness range of the polyester film, while not affecting the normal use of the composite layer, thereby increasing the strength and durability of the entire structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the utility model.

[0023] Description of reference numerals:

[0024] 1. Composite layer; 2. Protective layer; 3. Polyimide film; 4. Polyethylene film; 5. Installation cavity; 6. PET anti-ultraviolet film. DETAILED DESCRIPTION

[0025] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0026] like Figure 1As shown, a PET composite film structure of the utility model includes a composite layer 1, which is a transparent structure formed by stacking multiple materials; these materials include a polyimide film 3 and a polyethylene film 4, and a PET anti-ultraviolet film 6 is arranged between them; the composite layer 1 can be effectively protected from the influence of the external environment and prevent ultraviolet rays from damaging the material.

[0027] The protective layer 2 covers the upper and lower parts of the composite layer 1 respectively, and plays an important protective role; it can prevent the composite layer 1 from being physically damaged, such as scratches, impacts, etc.; at the same time, the protective layer 2 can also prevent external impurities such as moisture and dust from affecting the composite layer 1.

[0028] In the present embodiment, the composite layer 1 includes a polyimide film 3 and a polyethylene film 4 ; these films are tightly bonded by hot pressing, thereby ensuring the overall stability and durability of the composite layer 1 .

[0029] In order to better fix the PET anti-ultraviolet film 6 , the corresponding surfaces of the polyimide film 3 and the polyethylene film 4 are thinned to form a mounting cavity 5 ; this allows the PET anti-ultraviolet film 6 to be better embedded in the mounting cavity 5 , thereby increasing the stability and durability of the composite layer 1 .

[0030] The protective layer 2 is composed of a polyester film, which is fixed to the composite layer 1 by heat pressing; this ensures that the protective layer 2 is tightly bonded to the composite layer 1, while increasing the strength and durability of the entire structure.

[0031] The thickness of the polyimide film 3 is between 0.5-5 μm; and the thickness of the polyethylene film 4 is between 5-30 μm; these specific thickness ranges can make the composite layer 1 have better light transmittance and toughness, while ensuring its sufficient strength and durability.

[0032] In addition, the thickness of the polyester film is between 10-50 μm; this thickness selection can ensure that the protective layer 2 has sufficient protection and will not affect the normal use of the composite layer 1.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. A PET composite film structure, characterized in that: include: A composite layer (1), wherein the composite layer (1) is a transparent structure and is formed by stacking a plurality of materials; A protective layer (2), wherein the protective layer (2) covers the upper side and the lower side of the composite layer (1) respectively, and plays a role in protecting the composite layer (1).

2. The PET composite film structure according to claim 1, characterized in that: The composite layer (1) comprises a polyimide film (3) and a polyethylene film (4), a PET anti-ultraviolet film (6) is arranged between the polyimide film (3) and the polyethylene film (4), and the polyimide film (3) and the polyethylene film (4) are formed by hot pressing.

3. The PET composite film structure according to claim 2, characterized in that: The corresponding surfaces of the polyimide film (3) and the polyethylene film (4) are thinned to form a mounting cavity (5), and the PET anti-ultraviolet film (6) is arranged in the mounting cavity (5).

4. The PET composite film structure according to claim 1, characterized in that: The protective layer (2) is composed of a polyester film, and the polyester film and the composite layer (1) are fixed by heat pressing.

5. The PET composite film structure according to claim 3, characterized in that: The thickness of the polyimide film (3) is 0.5-5 μm.

6. The PET composite film structure according to claim 2, characterized in that: The polyethylene film (4) has a thickness of 5-30 μm.

7. The PET composite film structure according to claim 4, characterized in that: The polyester film has a thickness of 10-50 μm.

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