Anti-static product packaging vacuum film

Abstract

The invention relates to the technical field of electronic product packaging films, in particular to an anti-static product packaging vacuum film which comprises a polyester fiber cloth layer, a PET layer, a lower PA layer, an AL layer, an upper PA layer and a carbon black PE layer, an anti-static product packaging vacuum film body is provided with the polyester fiber cloth layer, the PET layer, the lower PA layer, the AL layer, the upper PA layer and the carbon black PE layer, the polyester fiber cloth layer has the effects of abrasion resistance and tear resistance, and the anti-static product packaging vacuum film is good in anti-static effect. The AL layer is used for reducing the water vapor transmission rate of the film body, preventing electromagnetic interference and shading, the PA layer and the carbon black PE layer are used for resisting tear, stretch and puncture, and through the arrangement, the composite film layer of the film body is good in barrier property, good in preservation and moisture resistance of electronic products, not prone to being affected by the external environment and good in anti-corrosion performance. And the film body is suitable for a vacuumized product packaging scene.

Description

Technical Field

[0001] The invention relates to the technical field of electronic product packaging films, in particular to an anti-static product packaging vacuum film. Background Art

[0002] Electronic products are widely used in various fields. During the transportation of electronic products, they need to be packaged to avoid damage during operation. Anti-static product packaging vacuum film is usually used for packaging protection. Take the anti-static product packaging vacuum film prepared by coating method as an example.

[0003] The barrier properties of the composite film layer of the antistatic product packaging vacuum film prepared by some coating methods are poor, resulting in poor moisture-proof performance of electronic products and easy to be affected by the external environment. Therefore, an antistatic product packaging vacuum film is proposed to address the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide an antistatic product packaging vacuum film, which is used to solve the problem that the barrier performance of the composite film layer of the antistatic product packaging vacuum film prepared by some coating methods is poor, resulting in poor moisture-proof performance of electronic products and easy to be affected by the external environment.

[0005] To achieve the above object, the present invention provides the following technical solutions: An antistatic product packaging vacuum film comprises a polyester fiber cloth layer, a PET layer, a lower PA layer, an AL layer, an upper PA layer and a carbon black PE layer, wherein the PET layer is arranged on the top of the polyester fiber cloth layer, the lower PA layer is arranged on the top of the PET layer, the AL layer is arranged on the top of the lower PA layer, the upper PA layer is arranged on the top of the AL layer, the carbon black PE layer is arranged on the top of the upper PA layer, the top and bottom of the PET layer are both provided with photosensitive polyimide adhesive layers, the top and bottom of the upper PA layer are both provided with photosensitive polyimide adhesive layers, and a nitride layer is arranged between the top of the lower PA layer and the bottom of the AL layer.

[0006] Preferably, a method for preparing an antistatic product packaging vacuum film: S1, leveling the polyester fiber cloth layer by an external pressing device, coating the top of the polyester fiber cloth layer with a photosensitive polyimide adhesive layer by a coating machine, laminating the bottom of the PET film as the PET layer and the photosensitive polyimide adhesive layer set on the top of the polyester fiber cloth layer, and curing the photosensitive polyimide adhesive layer between the polyester fiber cloth layer and the PET layer by ultraviolet light from an external UV curing device; S2, coating a photosensitive polyimide adhesive layer on the top of the PET layer by a coating machine, laminating the bottom of the polyamide film as the lower PA layer and the photosensitive polyimide adhesive layer set on the top of the PET layer, and curing the photosensitive polyimide adhesive layer between the PET layer and the lower PA layer by ultraviolet light of an external UV curing device; S3, coating the bottom of the conductive carbon black PE film as the carbon black PE layer with a photosensitive polyimide adhesive layer by a coating machine, laminating the top of the polyamide film as the upper PA layer and the photosensitive polyimide adhesive layer set at the bottom of the carbon black PE layer, and curing the photosensitive polyimide adhesive layer between the upper PA layer and the carbon black PE layer by ultraviolet light of an external UV curing device; S4, send the lower PA layer into a coating chamber filled with metallic chromium, keep the vacuum degree less than 1.5×10-3Pa, and heat it to 135 degrees Celsius, continue to introduce nitrogen and argon into the device, set the sputtering power to 12KW, and continue magnetron sputtering for 5 minutes. Nitrogen reacts with the sputtered chromium atoms to form a nitride layer and evenly deposits on the top of the lower PA layer. Then send it into a vacuum aluminum plating equipment, evacuate to a vacuum degree less than 1.5×10-3Pa, heat the aluminum wire to 1320 degrees Celsius, melt the aluminum wire and vaporize it, and the gaseous aluminum is evenly deposited on the nitride layer to form an AL layer; S5. Apply a photosensitive polyimide adhesive layer on the top of the AL layer by a coating machine, adhere the bottom of the upper PA layer to the photosensitive polyimide adhesive layer set on the top of the AL layer, and cure the photosensitive polyimide adhesive layer between the AL layer and the upper PA layer by ultraviolet light from an external UV curing device.

[0007] Preferably, the PET layer in step S1 is subjected to a modification treatment to improve permeability before use: A1. Add methyl methacrylate, styrene, cadmium acrylate, initiator, emulsifier and solvent into a reaction kettle; A2, nitrogen is filled into the reactor, and the temperature is increased by the heating assembly provided inside the reactor. The reactor is stirred and reacted at a temperature of 55-70 degrees Celsius for 3-5 hours to obtain a random copolymer latex particle emulsion of methyl methacrylate, styrene and cadmium acrylate; A3. Under a nitrogen environment, the emulsion obtained in step A2 is diluted with deionized water, and the diluted emulsion is coated on the surface of the pretreated PET layer using a coating machine. The PET layer is placed in a vacuum oven and dried at 45-50 degrees Celsius for 15-20 minutes to obtain an anti-reflective PET film.

[0008] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the anti-static product packaging vacuum film body is composed of a polyester fiber cloth layer, a PET layer, a lower PA layer, an AL layer, an upper PA layer and a carbon black PE layer. The polyester fiber cloth layer is wear-resistant and tear-resistant. The AL layer is used to reduce the water vapor permeability of the film body, prevent electromagnetic interference and shield light. The PA layer and the carbon black PE layer are tear-resistant, stretch-resistant and puncture-resistant. Through the above-mentioned settings, the composite film layer of the film body has good barrier properties, good moisture-proof properties for the storage of electronic products, and is not easily affected by the external environment. The film body is suitable for vacuum product packaging scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the packaging film structure of the present invention.

[0010] In the figure: 1, polyester fiber cloth layer; 2, PET layer; 3, lower PA layer; 4, AL layer; 5, upper PA layer; 6, carbon black PE layer. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] See also Figure 1 , the present invention provides a technical solution: An antistatic product packaging vacuum film comprises a polyester fiber cloth layer 1, a PET layer 2, a lower PA layer 3, an AL layer 4, an upper PA layer 5 and a carbon black PE layer 6, wherein the PET layer 2 is arranged on the top of the polyester fiber cloth layer 1, the lower PA layer 3 is arranged on the top of the PET layer 2, the AL layer 4 is arranged on the top of the lower PA layer 3, the upper PA layer 5 is arranged on the top of the AL layer 4, the carbon black PE layer 6 is arranged on the top of the upper PA layer 5, the top and bottom of the PET layer 2 are both provided with photosensitive polyimide adhesive layers, the top and bottom of the upper PA layer 5 are both provided with photosensitive polyimide adhesive layers, and a nitride layer is arranged between the top of the lower PA layer 3 and the bottom of the AL layer 4.

[0013] Workflow: The present invention provides a method for preparing an anti-static product packaging vacuum film: Before use, the PET layer 2 is subjected to a modification treatment to improve its permeability: A1. Add methyl methacrylate, styrene, cadmium acrylate, initiator, emulsifier and solvent into a reaction kettle; A2, nitrogen is filled into the reactor, and the temperature is increased by the heating assembly provided inside the reactor. The reactor is stirred and reacted at a temperature of 55-70 degrees Celsius for 3-5 hours to obtain a random copolymer latex particle emulsion of methyl methacrylate, styrene and cadmium acrylate; A3. Under a nitrogen environment, the emulsion obtained in step A2 is diluted with deionized water, and the diluted emulsion is coated on the surface of the pretreated PET layer 2 using a coating machine. The PET layer 2 is placed in a vacuum oven and dried at 45-50 degrees Celsius for 15-20 minutes to obtain an anti-reflective PET film.

[0014] S1, flattening the polyester fiber cloth layer 1 by an external pressing device, coating the top of the polyester fiber cloth layer 1 with a photosensitive polyimide adhesive layer by a coating machine, laminating the bottom of the PET film as the PET layer 2 with the photosensitive polyimide adhesive layer set on the top of the polyester fiber cloth layer 1, and curing the photosensitive polyimide adhesive layer between the polyester fiber cloth layer 1 and the PET layer 2 by ultraviolet light of an external UV curing device; S2, coating a photosensitive polyimide adhesive layer on the top of the PET layer 2 by a coating machine, laminating the bottom of the polyamide film as the lower PA layer 3 and the photosensitive polyimide adhesive layer set on the top of the PET layer 2, and curing the photosensitive polyimide adhesive layer between the PET layer 2 and the lower PA layer 3 by ultraviolet light of an external UV curing device; S3, coating the bottom of the conductive carbon black PE film as the carbon black PE layer 6 with a photosensitive polyimide adhesive layer by a coating machine, laminating the top of the polyamide film as the upper PA layer 5 and the photosensitive polyimide adhesive layer set at the bottom of the carbon black PE layer 6, and curing the photosensitive polyimide adhesive layer between the upper PA layer 5 and the carbon black PE layer 6 by ultraviolet light of an external UV curing device; S4, the lower PA layer 3 is sent into a coating chamber filled with metallic chromium, the vacuum is maintained at less than 1.5×10-3Pa, and heated to 135 degrees Celsius, nitrogen and argon are continuously introduced into the device, the sputtering power is set to 12KW, and magnetron sputtering is continued for 5 minutes, the nitrogen reacts with the sputtered chromium atoms to form a nitride layer and is uniformly deposited on the top of the lower PA layer 3, and then sent into a vacuum aluminum coating equipment, evacuated to a vacuum degree of less than 1.5×10-3Pa, the aluminum wire is heated to 1320 degrees Celsius, the aluminum wire is melted and vaporized, and the gaseous aluminum is uniformly deposited on the nitride layer to form an AL layer 4; S5. Apply a photosensitive polyimide adhesive layer on the top of the AL layer 4 by a coater, adhere the bottom of the upper PA layer 5 to the photosensitive polyimide adhesive layer set on the top of the AL layer 4, and cure the photosensitive polyimide adhesive layer between the AL layer 4 and the upper PA layer 5 by ultraviolet light of an external UV curing device to form an anti-static product packaging vacuum film body.

[0015] The chart of test items for the anti-static product packaging vacuum film in this case is as follows:

[0016] The above-mentioned anti-static product packaging vacuum film body is composed of a polyester fiber cloth layer, a PET layer, a lower PA layer, an AL layer, an upper PA layer and a carbon black PE layer. The polyester fiber cloth layer is wear-resistant and tear-resistant. The AL layer is used to reduce the water vapor permeability of the film body, prevent electromagnetic interference and shading. The PA layer and the carbon black PE layer are tear-resistant, stretch-resistant and puncture-resistant. Through the above-mentioned settings, the composite film layer of the film body has good barrier properties, good moisture-proof properties for the storage of electronic products, and is not easily affected by the external environment. The film body is suitable for vacuum product packaging scenarios. The film body is suitable for vacuum precision product packaging, optoelectronic equipment packaging, shipping accessories packaging, precision instruments, ceramic packaging, display module box packaging, medical instrument precision parts packaging, chip semiconductor packaging and other product packaging scenarios.

[0017] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antistatic product packaging vacuum film, comprising a polyester fiber cloth layer (1), a PET layer (2), a lower PA layer (3), an AL layer (4), an upper PA layer (5) and a carbon black PE layer (6), characterized in that: A PET layer (2) is arranged on the top of the polyester fiber cloth layer (1), a lower PA layer (3) is arranged on the top of the PET layer (2), an AL layer (4) is arranged on the top of the lower PA layer (3), an upper PA layer (5) is arranged on the top of the AL layer (4), a carbon black PE layer (6) is arranged on the top of the upper PA layer (5), a photosensitive polyimide adhesive layer is arranged on the top and bottom of the PET layer (2), a photosensitive polyimide adhesive layer is arranged on the top and bottom of the upper PA layer (5), and a nitride layer is arranged between the top of the lower PA layer (3) and the bottom of the AL layer (4).

2. The anti-static product packaging vacuum film according to claim 1, characterized in that: A method for preparing an anti-static product packaging vacuum film: S1, flattening the polyester fiber cloth layer (1) by an external pressing device, coating the top of the polyester fiber cloth layer (1) with a photosensitive polyimide adhesive layer by a coating machine, laminating the bottom of the PET film as the PET layer (2) and the photosensitive polyimide adhesive layer provided on the top of the polyester fiber cloth layer (1), and curing the photosensitive polyimide adhesive layer between the polyester fiber cloth layer (1) and the PET layer (2) by ultraviolet light of an external UV curing device; S2, coating a photosensitive polyimide adhesive layer on the top of the PET layer (2) by means of a coating machine, laminating the bottom of the polyamide film serving as the lower PA layer (3) with the photosensitive polyimide adhesive layer provided on the top of the PET layer (2), and curing the photosensitive polyimide adhesive layer between the PET layer (2) and the lower PA layer (3) by means of ultraviolet light from an external UV curing device; S3, coating the bottom of the conductive carbon black PE film as the carbon black PE layer (6) with a photosensitive polyimide adhesive layer by a coating machine, laminating the top of the polyamide film as the upper PA layer (5) and the photosensitive polyimide adhesive layer provided on the bottom of the carbon black PE layer (6), and curing the photosensitive polyimide adhesive layer between the upper PA layer (5) and the carbon black PE layer (6) by ultraviolet light of an external UV curing device; S4, the lower PA layer (3) is sent into a coating chamber containing metallic chromium, the vacuum is maintained at less than 1.5×10-3Pa, and the chamber is heated to 135 degrees Celsius, nitrogen and argon are continuously introduced into the chamber, the sputtering power is set to 12KW, and magnetron sputtering is continued for 5 minutes, the nitrogen reacts with the sputtered chromium atoms to form a nitride layer and is uniformly deposited on the top of the lower PA layer (3), and then the chamber is sent into a vacuum aluminum coating device, evacuated to a vacuum degree of less than 1.5×10-3Pa, and the aluminum wire is heated to 1320 degrees Celsius to melt and vaporize the aluminum wire, and the gaseous aluminum is uniformly deposited on the nitride layer to form an AL layer (4); S5. A photosensitive polyimide adhesive layer is coated on the top of the AL layer (4) by a coating machine, and the bottom of the upper PA layer (5) is laminated with the photosensitive polyimide adhesive layer disposed on the top of the AL layer (4). The photosensitive polyimide adhesive layer between the AL layer (4) and the upper PA layer (5) is cured by ultraviolet light from an external UV curing device.

3. The anti-static product packaging vacuum film according to claim 1, characterized in that: The PET layer (2) in step S1 is subjected to a modification treatment to improve its permeability before use: A1. Add methyl methacrylate, styrene, cadmium acrylate, initiator, emulsifier and solvent into a reaction kettle; A2, nitrogen is filled into the reactor, and the temperature is increased by the heating assembly provided inside the reactor. The reactor is stirred and reacted at a temperature of 55-70 degrees Celsius for 3-5 hours to obtain a random copolymer latex particle emulsion of methyl methacrylate, styrene and cadmium acrylate; A3. Under a nitrogen environment, the emulsion obtained in step A2 is diluted with deionized water, and the diluted emulsion is coated on the surface of the pretreated PET layer (2) using a coating machine. The PET layer (2) is placed in a vacuum oven and dried at 45-50 degrees Celsius for 15-20 minutes to obtain an anti-reflective PET film.

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