Antistatic self-adhesive PET (Polyethylene Terephthalate) film

Abstract

The utility model provides an anti-static self-adhesive PET (Polyethylene Terephthalate) film which comprises a PET material layer, an anti-static coating is arranged on the upper surface layer of the PET material layer, an adhesive coating is arranged below the PET material layer, and a conductive static belt which penetrates through the adhesive coating and is inserted into the PET material layer is arranged in the adhesive coating. A good external antistatic effect is achieved through the antistatic coating arranged on the outer surface of the PET material layer, electrostatic charges are more easily and evenly distributed on the surface of the material and rapidly leaked, electrostatic accumulation is reduced, the risk of electrostatic discharge is reduced, the antistatic coating serves as a surface treatment technology, and the antistatic effect is good. The electrostatic guiding effect of an internal conductive electrostatic belt can be enhanced, so that friction static electricity is avoided during adhesion of the inner layer, the effect of the adhesive coating is more remarkable, and the problems that the surface of the PET film is provided with electrostatic charges, sundries in air are adsorbed by the surface of the PET film, and the electrostatic discharge phenomenon possibly occurs are solved.

Description

Technical Field

[0001] The utility model provides an anti-static PET film, belongs to the technical field of PET film equipment, and particularly relates to an anti-static self-adhesive PET film. Background Art

[0002] PET, the full name of which is polyethylene terephthalate, is a member of the thermoplastic polyester family. PET has many excellent physical and chemical properties, including high mechanical strength and transparency, good chemical resistance, moisture resistance, acid and alkali resistance, etc. Therefore, it is widely used in many fields. PET plastic film has good transparency, making it suitable for a variety of applications, such as food packaging, electronic product protective film, etc.

[0003] When PET film is adhered to other materials, the friction between them will cause the transfer of charge. Usually, this charge transfer will cause the surface of PET film to carry static charge, forming static electricity. In long-term use, due to problems such as dry environment, the film may also generate static electricity. Static electricity can make the surface of PET film absorb dust, dirt and other tiny particles in the air, and even cause electrostatic discharge, which can damage sensitive electronic components such as chips, circuit boards, etc. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the embodiments of the present application provide an antistatic self-adhesive PET film, thereby solving the problem that the surface of the PET film carries static charge, causing the surface of the PET film to absorb debris in the air, and the problem that static discharge may occur.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an antistatic self-adhesive PET film, comprising a PET material layer, wherein the upper surface of the PET material layer is provided with an antistatic coating, the lower surface of the PET material layer is provided with an adhesive coating, and the adhesive coating is provided with a conductive electrostatic belt that penetrates the adhesive coating and is inserted into the PET material layer.

[0006] Preferably, the PET material layer is a mixture of 70% to 90% PET matrix and 10% to 30% glass fiber.

[0007] Preferably, the outer surface of the antistatic coating is provided with a plurality of evenly distributed surface textures, and the interior of the surface textures is provided with a PANI coating film.

[0008] Preferably, the cross-sectional shapes of the PANI coating film and the surface texture are both arc-shaped, and the height of the PANI coating film does not exceed the depth of the surface texture itself.

[0009] Preferably, the conductive electrostatic belts are kept relatively parallel to each other, and the lower surface of the conductive electrostatic belt and the adhesive coating are on the same horizontal plane.

[0010] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0011] The utility model achieves good external antistatic effect by arranging an antistatic coating on the outer surface of the PET material layer, so that static charge is more easily evenly distributed and quickly leaked on the material surface, which helps to reduce the accumulation of static electricity and reduce the risk of static electricity discharge. As a surface treatment technology, the antistatic coating can enhance the static electricity guiding effect of the internal conductive static belt, so that the inner layer can avoid friction static electricity when sticking, making the effect of the adhesive coating more significant.

[0012] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the antistatic self-adhesive PET film of the utility model;

[0014] Figure 2 It is a cross-sectional view of the antistatic self-adhesive PET film of the utility model;

[0015] Figure 3 This is a partial enlarged view of the antistatic self-adhesive PET film of the utility model.

[0016] As shown in the figure:

[0017] 1. PET material layer; 2. Antistatic coating; 3. Adhesive coating; 4. Conductive static tape; 5. Surface texture; 6. PANI coating film. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present invention; the terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] like Figure 1 and Figure 2 As shown, the antistatic self-adhesive PET film includes a PET material layer 1, an antistatic coating 2 is provided on the surface above the PET material layer 1, an adhesive coating 3 is provided below the PET material layer 1, a conductive electrostatic belt 4 is provided inside the adhesive coating 3 which penetrates the adhesive coating 3 and is inserted into the PET material layer 1, a plurality of evenly distributed surface textures 5 are provided on the outer surface of the antistatic coating 2, a PANI coating film 6 is provided inside the surface texture 5, the cross-sectional shapes of the PANI coating film 6 and the surface texture 5 are both arc-shaped, and the height of the PANI coating film 6 does not exceed the depth of the surface texture 5 itself.

[0022] In this embodiment, the antistatic coating 1 not only has an antistatic function, but also provides physical and chemical protection to prevent environmental factors such as humidity, chemical corrosion, etc. from affecting the antistatic performance and conductive properties of the material, which helps to extend the service life of the PET film and its internal conductive belt. At the same time, the antistatic coating 1 can effectively reduce the friction between materials, especially in high-speed motion applications such as conveyor belts, rollers, etc., to reduce the static electricity generation caused by friction; by forming a PANI conductive layer on the surface of the antistatic coating 1, the conductivity of the material can be improved, thereby effectively dispersing or neutralizing static charges. When the PET surface is coated with a PANI layer, static charges can be dissipated on the surface faster. The PANI coating can be formed on the PET surface through simple processes such as solution coating, spraying or dipping. This coating preparation process is relatively easy and has low cost; at the same time, ensuring that the PANI coating film 6 does not exceed the depth of the surface texture 5 can prevent the generation of a fine current outside the film when the charge dissipates.

[0023] like Figure 2 and Figure 3 As shown, the PET material layer 1 is a mixture of 70% to 90% PET matrix and 10% to 30% glass fiber, the conductive electrostatic tapes 4 are kept relatively parallel, and the lower surfaces of the conductive electrostatic tapes 4 and the adhesive coating 3 are on the same horizontal plane.

[0024] In this embodiment, when static electricity is generated in the inner layer of the film and the adhesive coating 3, the internal current will be conducted upward along the conductive static belt 4 by virtue of the gaps between the conductive static belts 4 and the breakage of the PANI coating layer, and the resistance gradually increases until it dissipates; glass fiber is mixed into the PET matrix, and the PET material layer formed significantly enhances the strength, rigidity and impact resistance of the material. At the same time, the glass fiber has good thermal stability, which can reduce the dimensional change of the material during thermal deformation, and the glass fiber reinforced PET maintains good electrical insulation performance.

[0025] When in use, the utility model describes a self-adhesive PET film with antistatic function. This film structure cleverly combines antistatic coating, glass fiber reinforced PET matrix layer, conductive electrostatic belt and PANI coating film to form a high-efficiency and multifunctional electrostatic protection material. When static electricity is generated in the environment or the material itself generates static electricity due to friction and other reasons, the PANI coating film 6, as the outermost layer, first plays a role in quickly dispersing or neutralizing static charges, and effectively dissipates static charges on the surface quickly; after the static charges pass through the PANI coating film 6, they are further conducted to the conductive electrostatic belt 4 with higher efficiency through the antistatic coating 2. These conductive belts form an optimized static electricity extraction path inside the PET material layer 1 to ensure that static electricity can be efficiently guided and dissipated; the glass fiber reinforced PET material layer 1 provides mechanical performance support for the entire film, including improved strength, stiffness and impact resistance. At the same time, this structure also enhances the dimensional stability and electrical insulation performance of the material under high temperature conditions; the adhesive coating 3 ensures that the film can be easily and firmly adhered to different surfaces without the need for additional fixing devices, which provides convenience for installation. This film provides efficient electrostatic protection through the combination of PANI coating and antistatic coating, reducing the damage of static electricity to equipment and discomfort to the human body; by introducing glass fiber reinforced PET, the film has better physical strength and impact resistance, suitable for use in harsh environments; the addition of glass fiber not only improves the thermal stability of the material, so that it still maintains a stable size and shape at high temperatures, but also maintains good electrical insulation, which is suitable for electrostatic protection of electronic equipment; the design of this material makes it widely used in fields that require electrostatic protection, such as electronics, electrical, automotive, and communication equipment; the design of the adhesive coating makes the film easy to install and replace, improving the flexibility and convenience of use; the preparation process is relatively easy and cost-effective, which provides the possibility for mass production and wide application. In summary, the self-adhesive PET film of the utility model, with its unique structure and material combination, provides a comprehensive solution, which not only effectively solves the problem of static electricity, but also improves the physical and chemical stability of the material itself. It is a high-performance new material with wide application potential.

[0026] Although the present invention has been disclosed as above in terms of preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be based on the definition of the claims.

Claims

1. An antistatic self-adhesive PET film, comprising a PET material layer (1), characterized in that: The upper surface of the PET material layer (1) is provided with an antistatic coating (2), the lower surface of the PET material layer (1) is provided with an adhesive coating (3), and the adhesive coating (3) is provided with a conductive electrostatic belt (4) penetrating the adhesive coating (3) and inserted into the PET material layer (1).

2. The antistatic self-adhesive PET film according to claim 1, characterized in that: A plurality of evenly distributed surface textures (5) are provided on the outer surface of the antistatic coating (2), and a PANI coating film (6) is provided inside the surface texture (5).

3. The antistatic self-adhesive PET film according to claim 2, characterized in that: The cross-sectional shapes of the PANI coating film (6) and the surface texture (5) are both arc-shaped, and the height of the PANI coating film (6) does not exceed the depth of the surface texture (5) itself.

4. The antistatic self-adhesive PET film according to claim 1, characterized in that: The conductive electrostatic belts (4) are kept relatively parallel to each other, and the lower surfaces of the conductive electrostatic belts (4) and the adhesive coating (3) are on the same horizontal plane.

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