PETG composite film bag with light shielding performance

Abstract

The utility model belongs to the technical field of PETG (polyethylene terephthalate glycol) composite film bags, and particularly relates to a PETG composite film bag with light shielding performance, which comprises a bag body, the bag body comprises a base layer, the outer wall of the base layer is provided with a heat insulation layer, the outer wall of the heat insulation layer is provided with a light shielding layer, the outer wall of the light shielding layer is provided with an aluminum foil layer, the outer wall of an anti-scraping layer is coated with a shading coating, and the base layer is a PETG film. The bag body has a low shrinkage rate at normal temperature, and a stable packaging effect can be kept under different conditions; the heat insulation layer is a polyester film and has a good heat insulation effect, and medicine in the bag body is prevented from losing efficacy due to high temperature; the light shielding layer is a black PE film, so that the light shielding effect is improved, and light is prevented from penetrating into the bag body; an aluminum foil layer is arranged on the outer wall of the light shielding layer and further improves the oxidation resistance, shading and heat insulation effects of the bag body; the scratch-resistant layer is a PET scratch-resistant film, so that the bag body can be prevented from being damaged, and the service life is prolonged; and the outer wall of the scratch-resistant layer is coated with the shading coating, so that the light shielding effect of the bag body is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of PETG composite film bags, in particular to a PETG composite film bag with light shielding performance. Background Art

[0002] PETG composite film bag is a bag made of PETG composite film. More and more production materials will use PETG composite film, especially daily necessities or food packaging. PETG composite film has a light shielding effect. Its function is like setting a barrier between the polymer and light radiation, so that light cannot directly radiate into the interior of the polymer, so that the interior of the polymer is not radiated by ultraviolet rays, and light is prevented from penetrating into the interior of the polymer, thereby effectively inhibiting photo-oxidative degradation and playing a role in protecting the polymer. Light shielding agents include inorganic pigments such as carbon black and titanium oxide and organic pigments such as phthalocyanine blue and phthalocyanine green. Among them, carbon black has the best shielding effect.

[0003] PETG composite films only have a simple light shielding effect, and their own heat insulation effect is poor, which can easily cause the medicine in the packaging bag to become ineffective. In addition, the surface anti-scratch effect is poor, and it is easy to be scratched and damaged, affecting the service life. Summary of the invention

[0004] The utility model aims to provide a PETG composite film bag with light shielding performance, which has the advantages of good light shielding effect, strong heat insulation and scratch resistance and long service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a PETG composite film bag with light shielding performance, comprising a bag body, the bag body comprising a base layer, the outer wall of the base layer is provided with a heat insulation layer, the outer wall of the heat insulation layer is provided with a light shielding layer, the outer wall of the light shielding layer is provided with an aluminum foil layer, the outer wall of the aluminum foil layer is provided with an anti-scratch layer, and the outer wall of the anti-scratch layer is coated with a light-shielding coating.

[0006] In order to ensure a firm connection between the layers, as a preferred high-strength insulating glass of the utility model, the base layer, the heat insulation layer, the light shielding layer, the aluminum foil layer and the anti-scratch layer are bonded to each other by an adhesive.

[0007] In order to improve the basic strength of the bag body, as a preferred high-strength hollow glass of the utility model, the base layer is a PETG film.

[0008] In order to improve the heat insulation effect of the bag body, as a preferred high-strength hollow glass of the utility model, the heat insulation layer is a polyester film.

[0009] In order to improve the light shielding performance of the bag body, as a preferred high-strength insulating glass of the utility model, the light shielding layer is a black PE film.

[0010] In order to improve the scratch resistance of the bag body surface, as a preferred high-strength insulating glass of the utility model, the anti-scratch layer is a PET anti-scratch film.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The bag body of the utility model comprises a base layer, which is a PETG film with good toughness and impact resistance, so that the bag body has a low shrinkage rate at room temperature and can maintain a stable packaging effect under different conditions; the heat insulation layer is a polyester film with low density, high strength, strong corrosion resistance, good aging resistance, and good heat insulation effect, so as to prevent the high temperature from making the medicines in the bag body ineffective; the light shielding layer is a black PE film, which improves the light-shielding effect, shields or reflects ultraviolet rays, and prevents light from penetrating into the bag body, thereby protecting the medicines in the bag body; the outer wall of the light shielding layer is provided with an aluminum foil layer, and the aluminum foil layer further improves the anti-oxidation, light-shielding and heat-insulating effects of the bag body; the outer wall of the aluminum foil layer is provided with an anti-scratch layer, and the anti-scratch layer is a PET anti-scratch film with high strength, scratch resistance and wear resistance, so as to improve the surface strength of the bag body, prevent the bag body from being damaged, and extend the service life; the outer wall of the anti-scratch layer is coated with a light-shielding coating, so as to further improve the light-shielding effect of the bag body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the bag body of the utility model.

[0016] In the figure: 1. bag body; 2. base layer; 3. heat insulation layer; 4. light shielding layer; 5. aluminum foil layer; 6. anti-scratch layer; 7. light-shielding coating. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] See also Figure 1 and Figure 2 A PETG composite film bag with light shielding performance comprises a bag body 1, the bag body 1 comprises a base layer 2, the outer wall of the base layer 2 is provided with a heat insulation layer 3, the outer wall of the heat insulation layer 3 is provided with a light shielding layer 4, the outer wall of the light shielding layer 4 is provided with an aluminum foil layer 5, the outer wall of the aluminum foil layer 5 is provided with an anti-scratch layer 6, and the outer wall of the anti-scratch layer 6 is coated with a light-shielding coating 7.

[0020] In this embodiment: the bag body 1 includes a base layer 2, which is a PETG film, which has good toughness and impact resistance, low shrinkage rate and excellent packaging effect, so that the bag body 1 has a low shrinkage rate at room temperature and can maintain a stable packaging effect under different conditions; the heat insulation layer 3 is a polyester film, which has low density, high strength, strong corrosion resistance, good aging resistance, and good heat insulation effect, preventing high temperature from causing the medicine inside the bag body 1 to fail; the light shielding layer 4 is a black PE film, which improves the light-shielding effect, shields or reflects ultraviolet rays, and prevents light from penetrating into the bag body 1, thereby protecting the medicine inside the bag body 1; the outer wall of the light shielding layer 4 is provided with an aluminum foil layer 5, and the aluminum foil layer 5 further improves the anti-oxidation, light-shielding and heat-insulating effects of the bag body 1; the outer wall of the aluminum foil layer 5 is provided with an anti-scratch layer 6, and the anti-scratch layer 6 is a PET anti-scratch film with high strength, scratch resistance and wear resistance, which improves the surface strength of the bag body 1, can prevent the bag body 1 from being damaged, and prolong the service life; the outer wall of the anti-scratch layer 6 is coated with a light-shielding coating 7, which further improves the light shielding effect of the bag body 1.

[0021] As a technical optimization solution of the utility model, the base layer 2, the heat insulation layer 3, the light shielding layer 4, the aluminum foil layer 5 and the anti-scratch layer 6 are bonded to each other by an adhesive.

[0022] In this embodiment: the base layer 2, the heat insulation layer 3, the light shielding layer 4, the aluminum foil layer 5 and the anti-scratch layer 6 are bonded to each other by adhesive to improve the connection strength between the layers.

[0023] As a technical optimization solution of the utility model, the base layer 2 is a PETG film.

[0024] In this embodiment, the PETG film has good toughness and impact resistance, low shrinkage rate and excellent packaging effect, so that the bag body 1 has a low shrinkage rate at room temperature and can maintain a stable packaging effect under different conditions.

[0025] As a technical optimization solution of the present invention, the heat insulation layer 3 is a polyester film.

[0026] In this embodiment, the polyester film has low density, high strength, strong corrosion resistance, good aging resistance, and good heat insulation effect, preventing high temperature from making the medicine inside the bag body 1 ineffective.

[0027] As a technical optimization solution of the utility model, the light shielding layer 4 is a black PE film.

[0028] In this embodiment, the black PE film improves the light-shielding effect, shields or reflects ultraviolet rays, and prevents light from penetrating into the bag body 1, thereby protecting the medicines in the bag body 1.

[0029] As a technical optimization solution of the present invention, the anti-scratch layer 6 is a PET anti-scratch film.

[0030] In this embodiment, the PET anti-scratch film has high strength, is scratch-resistant and wear-resistant, improves the surface strength of the bag body 1, prevents the bag body 1 from being damaged, and prolongs its service life.

[0031] Working principle: The bag body 1 of the utility model includes a base layer 2, which is a PETG film with good toughness and impact resistance, low shrinkage rate and excellent packaging effect, so that the bag body 1 has a low shrinkage rate at room temperature and can maintain a stable packaging effect under different conditions; the heat insulation layer 3 is a polyester film with low density, high strength, strong corrosion resistance, good aging resistance, and good heat insulation effect, which prevents the high temperature from making the medicine inside the bag body 1 ineffective; the light shielding layer 4 is a black PE film, which improves the light-shielding effect, shields or reflects ultraviolet rays, and prevents light from penetrating into the bag body 1, thereby protecting the medicine inside the bag body 1; the outer wall of the light shielding layer 4 is provided with an aluminum foil layer 5, and the aluminum foil layer 5 further improves the anti-oxidation, light-shielding and heat-insulating effects of the bag body 1; the outer wall of the aluminum foil layer 5 is provided with an anti-scratch layer 6, and the anti-scratch layer 6 is a PET anti-scratch film with high strength, scratch resistance and wear resistance, which improves the surface strength of the bag body 1, can prevent the bag body 1 from being damaged, and prolong the service life; the outer wall of the anti-scratch layer 6 is coated with a light-shielding coating 7, which further improves the light shielding effect of the bag body 1.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A PETG composite film bag with light shielding performance, comprising a bag body (1), characterized in that: The bag body (1) comprises a base layer (2), the outer wall of the base layer (2) is provided with a heat insulation layer (3), the outer wall of the heat insulation layer (3) is provided with a light shielding layer (4), the outer wall of the light shielding layer (4) is provided with an aluminum foil layer (5), the outer wall of the aluminum foil layer (5) is provided with an anti-scratch layer (6), and the outer wall of the anti-scratch layer (6) is coated with a light-shielding coating (7).

2. The PETG composite film bag with light shielding performance according to claim 1, characterized in that: The base layer (2), the heat insulation layer (3), the light shielding layer (4), the aluminum foil layer (5) and the anti-scratch layer (6) are all bonded to each other by an adhesive.

3. The PETG composite film bag with light shielding performance according to claim 1, characterized in that: The base layer (2) is a PETG film.

4. The PETG composite film bag with light shielding performance according to claim 1, characterized in that: The heat insulation layer (3) is a polyester film.

5. The PETG composite film bag with light shielding performance according to claim 1, characterized in that: The light shielding layer (4) is a black PE film.

6. The PETG composite film bag with light shielding performance according to claim 1, characterized in that: The anti-scratch layer (6) is a PET anti-scratch film.

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