High-weather-resistance composite film
By using specific materials and processes to form an integral structure in the composite membrane, the aging problem of traditional composite membranes under high temperature and sunlight is solved, achieving better protection and mechanical properties.
Patent Information
- Application Number
- CN202422895813.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Traditional composite films are prone to aging and have poor mechanical properties in high-temperature environments, and they cannot effectively protect food under direct sunlight, resulting in poor preservation effects.
A mixture of polyvinyl chloride and polyethylene terephthalate is used as the first substrate layer, and a mixture of polyvinyl chloride and high-temperature antioxidant is used as the second substrate layer. A polyethylene layer and an aluminum foil layer are added to the composite layer, and the integral structure is formed by heat sealing and hot pressing.
It improves the high temperature resistance and mechanical strength of the composite film, effectively blocks ultraviolet rays and harmful substances, and extends the service life of the product.
Smart Images
Figure CN223522455U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to composite film technical field especially is high weatherability composite film. BACKGROUND
[0002] Weatherability composite film technology is a technology that combines multiple functional coating materials. These coating materials can play their respective advantages under different climate and environmental conditions, forming a strong and durable protective layer. Common coating materials include polyurethane, epoxy resin, acrylate, etc. Weatherability composite film technology is widely used in the fields of construction, aviation, automobile, ship, etc. For example, in the construction field, super weatherability composite film technology can be used to protect the exterior walls, roofs, bridges, etc. of buildings. In the fields of aviation, automobile, ship, super weatherability composite film technology can be used to protect various metal and non-metal materials.
[0003] Composite film is often used in the food field, which can effectively protect the outer packaging and inner packaging of food, prolong the storage time of food, and improve the storage quality of food. However, the traditional composite film has poor high-temperature resistance and mechanical properties, which is easy to naturally age or break during use, or cannot effectively protect food under direct sunlight, resulting in food storage effect not meeting the expected time. UTILITY MODEL CONTENT
[0004] The utility model aims to provide high weatherability composite film, solve the problem that the composite film has poor high-temperature resistance and mechanical properties during use, is easy to naturally age or break during use, or cannot effectively protect food under direct sunlight, resulting in food storage effect not meeting the expected time.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0006] High weatherability composite film, comprising a first substrate layer and a second substrate layer, the first substrate layer and the second substrate layer are adhered to each other, a composite layer is arranged above the first substrate layer, the composite layer comprises a polyethylene layer, an aluminum foil layer and a back adhesive layer, a VMPET film is arranged at the bottom of the second substrate layer, an adhesive layer is arranged at the bottom of the VMPET film, and a release layer is arranged at the bottom of the adhesive layer.
[0007] Preferably, the first substrate layer is a mixture of polyvinyl chloride and polyethylene terephthalate.
[0008] Preferably, the second substrate layer is a mixture of polyvinyl chloride and high-temperature resistant antioxidant, which improves the high-temperature resistance of the entire composite film.
[0009] Preferably, the aluminum foil layer is disposed between the polyethylene layer and the back adhesive layer, and the back adhesive layer and the first substrate layer are bonded.
[0010] Preferably, the release layer is a release paper.
[0011] Preferably, the aluminum foil layer and the polyethylene layer are bonded by a heat sealing process, the polyethylene layer and the first substrate layer are bonded by the back adhesive layer, and the first substrate layer and the second substrate layer and the second substrate layer and the VMPET film are formed into an integral whole by hot pressing.
[0012] The utility model at least has the following beneficial effects:
[0013] The mixture of polyvinyl chloride and polyethylene terephthalate forms the first substrate layer, and the mixture of polyvinyl chloride and high-temperature antioxidant forms the second substrate layer, so that the overall composite film has tear resistance and high-temperature resistance, the polyethylene layer in the composite layer serves as the outer material, has good weather resistance and mechanical properties, can protect the aluminum plating layer from the influence of the external environment, the aluminum plating layer has excellent optical and thermal conductivity properties, can effectively block the erosion of ultraviolet rays and other harmful substances, has good protection effect, and prolongs the service life of the product. BRIEF DESCRIPTION OF DRAWINGS
[0014] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] In the drawing: 1, first substrate layer; 2, second substrate layer; 3, composite layer; 31, polyethylene layer; 32, aluminum plating layer; 33, back adhesive layer; 4, VMPET film; 5, bonding layer; 6, release layer. DETAILED DESCRIPTION
[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are some embodiments of the utility model, not all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0018] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.
[0019] It should be noted that: similar signs and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0020] The electrical components appearing in this paper are all connected with the main controller and 220V mains of the outside world, and the main controller can be a conventional known device controlled by a computer or the like.
[0021] In the description of the embodiments of the present application, it should be noted that the terms "inner", "outer", "upper", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, which is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0022] Referring to Figure 1 , the high-weather-resistance composite film comprises a first base material layer 1 and a second base material layer 2, the first base material layer 1 and the second base material layer 2 are bonded to each other, a composite layer 3 is arranged above the first base material layer 1, the composite layer 3 comprises a polyethylene layer 31, an aluminum foil layer and a back adhesive layer 33, a VMPET film is arranged at the bottom of the second base material layer 2, the VMPET film has high barrier properties and prevents the entry of oxygen, moisture and ultraviolet rays, and is suitable for high-temperature and high-humidity environments, an adhesive layer 5 is arranged at the bottom of the VMPET film, and a release layer 6 is arranged at the bottom of the adhesive layer 5.
[0023] Further, the first base material layer 1 adopts a mixture of polyvinyl chloride and polyethylene terephthalate, wherein the polyethylene terephthalate has higher tear resistance.
[0024] Further, the second base material layer 2 adopts a mixture of polyvinyl chloride and a high-temperature-resistant antioxidant, thereby improving the high-temperature resistance of the entire composite film.
[0025] Further, the aluminum foil layer is arranged between the polyethylene layer 31 and the back adhesive layer 33, the back adhesive layer 33 and the first substrate layer 1 are bonded, the polyethylene layer 31 serves as an outer layer material, has good weather resistance and mechanical properties, can protect the aluminum plating layer 32 from the influence of the external environment, the aluminum plating layer 32 has excellent optical and thermal conductivity properties, can effectively block the erosion of ultraviolet rays and other harmful substances, has a good protective effect, and prolongs the service life of the product.
[0026] Further, the release layer 6 is a release paper.
[0027] Further, the aluminum foil layer and the polyethylene layer 31 are bonded by heat sealing, the polyethylene layer 31 and the first substrate layer 1 are bonded by the back adhesive layer 33, and the first substrate layer 1 and the second substrate layer 2 and the VMPET film are formed into an integral whole by hot pressing.
[0028] In summary, the first substrate layer 1 is formed by the mixture of polyvinyl chloride and polyethylene terephthalate, the second substrate layer 2 is formed by the mixture of polyvinyl chloride and high-temperature-resistant antioxidant, so that the overall composite film has tear resistance and high-temperature resistance, the polyethylene layer 31 in the composite layer 3 serves as an outer layer material, has good weather resistance and mechanical properties, can protect the aluminum plating layer 32 from the influence of the external environment, the aluminum plating layer 32 has excellent optical and thermal conductivity properties, can effectively block the erosion of ultraviolet rays and other harmful substances, has a good protective effect, and prolongs the service life of the product.
[0029] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection required by the present application is defined by the appended claims and their equivalents.
Claims
1. A highly weatherable composite film characterized in that, The application relates to a composite film, which comprises a first substrate layer (1) and a second substrate layer (2), the first substrate layer (1) and the second substrate layer (2) are bonded to each other, a composite layer (3) is arranged above the first substrate layer (1), the composite layer (3) comprises a polyethylene layer (31), an aluminum foil layer and a back adhesive layer (33), a VMPET film is arranged at the bottom of the second substrate layer (2), an adhesive layer (5) is arranged at the bottom of the VMPET film, and a release layer (6) is arranged at the bottom of the adhesive layer (5).
2. The highly weatherable composite film of claim 1, wherein, The first substrate layer (1) is made of a mixture of polyvinyl chloride and polyethylene terephthalate.
3. The highly weatherable composite film of claim 2, wherein, The second substrate layer (2) is made of a mixture of polyvinyl chloride and high-temperature-resistant antioxidant, so that the high-temperature resistance of the whole composite film is improved.
4. The highly weatherable composite film of claim 3, wherein, The aluminum foil layer is arranged between the polyethylene layer (31) and the back adhesive layer (33), and the back adhesive layer (33) and the first substrate layer (1) are bonded.
5. The highly weatherable composite film of claim 1, wherein, The release layer (6) is release paper.
6. The highly weatherable composite film of claim 1, wherein, The aluminum foil layer and the polyethylene layer (31) are bonded by heat sealing, the polyethylene layer (31) and the first substrate layer (1) are bonded by the back adhesive layer (33), and the first substrate layer (1) and the second substrate layer (2) and the second substrate layer (2) and the VMPET film are formed into an integral whole by hot pressing.