Anti-electrostatic shielding moisture-proof packaging film bag and production method thereof

Abstract

The invention discloses an anti-electrostatic shielding and damp-proof packaging film bag and a production method thereof, and belongs to the technical field of electrostatic shielding film bags, the anti-electrostatic shielding and damp-proof packaging film bag comprises a conductive static dissipation surface layer, an aluminized polyester layer, a porous aluminum foil, a polyethylene diaphragm layer and a migration static dissipation inner layer in sequence from inside to outside, and functions of static dissipation, sealing, heat insulation and moisture prevention are realized. The conductive static dissipation surface layer protects the surface, the aluminum plating layer and the porous aluminum foil reduce the use of aluminum materials, and the cost is reduced; the porous aluminum foil improves the composite strength and reduces the use amount of the solvent-free laminating adhesive; the wetting agent migrates to the inner surface of the polyethylene diaphragm layer to form a migration static dissipation inner layer, the static dissipation function is long, trace moisture in the packaging bag can be adsorbed, a static dissipation channel is formed, and the packaging bag is suitable for damp-proof vacuum packaging of sensitive electronic components, meets the purification standard and dust-free requirement and meets the packaging requirements of various electronic industries.

Description

Technical Field

[0001] The invention belongs to the technical field of electrostatic shielding film bags, and in particular relates to an anti-static shielding moisture-proof packaging film bag and a production method thereof. Background Art

[0002] With the development of electronic technology, a large number of electrostatic sensitive components and products are used in the industrial production and manufacturing process. The whole chain of electrostatic protection has gradually developed to scientific research and production activities involving procurement, production, inspection, testing, failure analysis, packaging, labeling, maintenance, storage, distribution and transportation. When electrostatic sensitive components and products are transported between electrostatic protection areas or outside electrostatic protection areas, anti-static packaging also has electrostatic shielding properties. Therefore, electrostatic shielding packaging bags have become a very important electrostatic protection product in the field of industrial production and manufacturing. Humid air is an important factor causing corrosion of items. The harm of humidity to industrial products and other items is mainly manifested in the rusting of metal products and the mildew or deliquescence of non-metallic items. The cost of using pure aluminum foil is high and the use of aluminum foil composite film bags often results in obvious over-packaging, which is not economical. Therefore, whether from the perspective of economy or practicality, as a technician in this field, a new type of anti-static shielding moisture-proof packaging film bag and its production method are urgently needed to be developed. Summary of the invention

[0003] The purpose of the present invention is to provide an antistatic shielding moisture-proof packaging film bag and a production method thereof in view of the existing problems. The present invention does not use an antistatic agent on the film surface, nor does it use a large amount of aluminum foil.

[0004] Stearic acid diethanolamine is also called bis(β-hydroxyethyl) stearylamine, and N-dodecylethanolamine is also called bis(β-hydroxyethyl) coconut amine. The above two are commonly used as emulsifiers.

[0005] An antistatic shielding and moisture-proof packaging film bag comprises a conductive static dissipative surface layer, an aluminized polyester layer, a porous aluminum foil, a polyethylene diaphragm layer, and a migratory static dissipative inner layer which are sequentially arranged from outside to inside; the inner surface of the aluminized polyester layer is compositely bonded to the outer surface of the porous aluminum foil; the inner surface of the porous aluminum foil is compositely bonded to the outer surface of the polyethylene diaphragm layer; the aluminized polyester layer is made by aluminizing a PET film; the conductive static dissipative surface layer is formed by applying a static conductive coating on the outer side of the aluminized polyester layer and curing it; the PET film contains 0.3-0.5wt% of a migratory wetting agent, the wetting agent is one of bis(β-hydroxyethyl) stearylamine or bis(β-hydroxyethyl) coconut amine; the wetting agent migrates to the inner surface of the polyethylene diaphragm layer through the porous aluminum foil and the polyethylene diaphragm layer to form a migratory static dissipative inner layer.

[0006] Electrostatic shielding: In order to avoid the influence of external electrostatic fields on charged or non-charged bodies, or to avoid the influence of the electrostatic field of charged bodies on the outside world, the charged or non-charged bodies are placed in a grounded closed or nearly closed metal casing or metal grid.

[0007] Anti-static shielding packaging bags: Flexible packaging bags with electrostatic shielding properties and electrostatic leakage properties on the inner surface that directly contacts electrostatic sensitive products.

[0008] Furthermore, the porous aluminum foil (3) has a thickness of 0.01 to 0.05 mm, a pore size of 5 to 10 μm, and a pore density of 400 to 500 pores / cm 2 Full surface microporous aluminum foil.

[0009] Furthermore, the aluminum layer thickness of the aluminum-plated polyester layer (2) is 30 to 40 nm, and the total thickness of the aluminum-plated polyester layer (2) is 25 μm to 30 μm.

[0010] Furthermore, the polyethylene diaphragm layer (4) has a porosity of 40% to 45%, a thickness of 9 to 12 μm, and a surface density of 4.1 to 4.7 g / m 2 .

[0011] Furthermore, the conductive static dissipative surface layer (1) has a thickness of 10 to 15 μm.

[0012] The production method of the antistatic shielding and moisture-proof packaging film bag comprises the following steps: a. PET film-grade slices are extruded into a cast PET film, and the upper surface of the PET film is aluminum-plated to obtain an aluminum-plated polyester layer, and then the upper surface of the aluminum-plated polyester layer is coated to form a conductive static dissipative surface layer to obtain an aluminum-plated and coated PET film, wherein the PET film-grade slices contain 0.3-0.5wt% of a migratable wetting agent, and the wetting agent is bis(β-hydroxyethyl) stearylamine or bis(β-hydroxyethyl) coconut oil amine. b. solvent-free compounding: compound the dried aluminum-plated and coated PET film with the porous aluminum foil and the polyethylene diaphragm layer by a solvent-free three-layer compounding machine under a compounding process; c. winding and aging: the winding speed is 130-150m / min and the winding tension is 140-170N. After winding, the film is aged for 18-24h at a temperature of 40-50℃ and a relative humidity of 50%-75% to obtain an antistatic shielding and moisture-proof packaging film; d. The antistatic shielding and moisture-proof packaging film bag making machine makes bags.

[0013] Furthermore, in the step a, the extrusion casting process is performed at a processing temperature of 270 to 290°C, cooled, extruded from a die at a temperature of 285 to 295°C, and directly cast onto a cold roller. After the sheet is peeled off the cold roller, the temperature reaches 40 to 60°C, and then heated to 90 to 100°C by a longitudinal infrared stretching roller and a stretching ratio of 3.3 to 4.0 to form a thick sheet. The sheet then enters a transverse box with a stretching temperature of 115 to 125°C, and is heat-set at a stretching ratio of 3.3 to 3.5 and a temperature of 230 to 250°C to form a film.

[0014] Furthermore, in the step a, the PET aluminum plating process is performed with a vacuum degree of 7×10 -2 Pa~9×10 -2 Pa, evaporation boat current is 700-800A, voltage is 7-8V, wire feeding speed is 0.8-1.2m / min, PET film winding speed is 400-450m / min.

[0015] Furthermore, the composite process in step b is 3 composite layers and the coating amount of the solvent-free adhesive is 0.8-1 g / m 2 , coating temperature 45 ~ 55 ℃, composite temperature 35 ~ 45 ℃, composite speed 300 ~ 500m / min, the solvent-free adhesive is a two-component solvent-free polyurethane laminating adhesive.

[0016] In daily production practice, due to the mistakes of the raw material purchasing staff, it was unexpectedly discovered that the electrostatic shielding effect of porous aluminum foil is still good, and it can reduce part of the aluminum foil cost. The use of aluminizing can ensure a certain moisture-proof ability, and when PET contains a wetting agent that can migrate, it can not only ensure the composite bonding strength with the porous aluminum foil by wetting, but also migrate through the porous aluminum foil and polyethylene diaphragm after the solvent-free polyurethane laminating adhesive is cured, and migrate to the inner surface of the polyethylene diaphragm layer to form a migrating electrostatic dissipation inner layer. The electrostatic dissipation function will not fail due to friction during the use of the packaging film bag. The electrostatic dissipation function is long-lasting, and it can also absorb trace moisture in the packaging bag to form an electrostatic dissipation channel. In addition, the use of materials such as aluminizing and porous aluminum foil has greatly reduced production costs.

[0017] Beneficial effects of the present invention: The production method of the anti-static shielding moisture-proof packaging film bag disclosed in the present invention adopts a structure in which a conductive static dissipative surface layer, an aluminized polyester layer, a porous aluminum foil, a polyethylene diaphragm layer, and a migrating static dissipative inner layer are arranged in sequence from the outside to the inside, and has static dissipative, sealing, heat-insulating, and moisture-proof functions. The conductive static dissipative surface layer can not only dissipate static electricity but also protect the surface of the aluminized polyester layer. In addition, the combined application of the aluminized layer and the porous aluminum foil greatly reduces the use of aluminum materials and reduces production costs. At the same time, the PET film contains 0.3-0.5wt% of a migrating wetting agent and the porous aluminum foil is used, which can improve the adhesive infiltration, enhance the surface adhesion of the aluminum foil, reduce the use of solvent-free polyurethane laminating adhesive, and improve the composite effect. The bending softness of the film bag can be increased, and it is better suitable for The application of electrostatic shielding packaging bags and the reduction of costs, the wetting agent increases the adhesion with the porous aluminum foil, and the defective rate is significantly reduced; the tensile strength of the porous aluminum foil is not significantly lower than that of the pure aluminum foil, reducing the proportion of aluminum foil in the quality of the anti-static shielding and moisture-proof packaging film bag. After the solvent-free polyurethane laminating adhesive is cured, the wetting agent can also migrate through the porous aluminum foil and polyethylene diaphragm, and migrate to the inner surface of the polyethylene diaphragm layer to form a migration static dissipation inner layer, which will not cause the static dissipation function of the packaging film bag to fail due to friction during use. The static dissipation function is long-lasting, and it can also absorb trace moisture in the packaging bag to form a static dissipation channel, which can effectively isolate the items from the external static field, prevent static electricity from being generated in the bag, and protect the items from static electricity hazards. Used for electrostatic sensitive electronic components such as PCB and LED. It can protect electrically sensitive components from potential electrostatic hazards to the greatest extent; the middle layer is a porous aluminum foil layer, so it has good anti-static and electrostatic shielding properties; the inner and outer surfaces are made of static-eliminating materials to prevent static electricity from being generated in the bag; it can be used for vacuum packaging of products; purification shielding bags can meet high standards for purification and dust-free; it is suitable for packaging of various PC boards, IC integrated circuits, electronic components, storage, LCD / LED liquid crystal screens and other industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the bag wall structure of the anti-static shielding and moisture-proof packaging film bag disclosed in the present invention. DETAILED DESCRIPTION

[0019] The present invention is described below with specific examples, but is not intended to be limiting of the present invention. Example 1

[0020] Raw materials and equipment: Lanzhou Vacuum Equipment ZZD-2050 evaporation coating machine; Xinshida compound machine WRJi5-1000A; Fully automatic die-cutting machine Lifei 2400; Porous aluminum foil WHL04 with a thickness of 0.05mm, a pore size of 10μm, and a pore density of 400 / cm 2Full-surface microporous aluminum foil; oily ATO transparent acrylic antistatic coating ABT-079; Kangda WD8257-2A / B two-component solvent-free polyurethane laminating adhesive, including 100 parts of A and 75 parts of B; Xinshida glue mixer WRJ5-2. Hai'an Petrochemical Plant B-1 bis (β-hydroxyethyl) stearylamine. Sinoma polyethylene diaphragm layer porosity 40%, thickness 9μm, surface density 4.1g / m 2 .

[0021] The production method of anti-static shielding and moisture-proof packaging film bags comprises the following steps: a. Yizheng FG604PET film-grade slices are extruded and cast into PET film, and the upper surface of the PET film is aluminum-plated to obtain an aluminum-plated polyester layer 2, and then the upper surface of the aluminum-plated polyester layer is coated to form a conductive static dissipative surface layer 1, so as to obtain an aluminum-plated and coated PET film, the above-mentioned PET film-grade slices contain 0.3wt% of a migratable wetting agent, and the above-mentioned wetting agent is bis(β-hydroxyethyl) stearylamine, the extrusion casting molding process is that the processing temperature is 270°C, the extrusion temperature is 285°C from the die head, and the film is directly cast onto a cold roller, and the temperature of the sheet material after peeling off the cold roller reaches 40°C, and then it is heated to 90°C and stretched to 3.3 by a longitudinal infrared stretching roller to form a thick sheet, and then enters a transverse box with a stretching temperature of 115°C, and is subjected to a heat setting treatment of a stretching ratio of 3.3 and a temperature of 230°C to form a film, and the PET aluminum plating process is to use a Φ1.5mm aluminum wire, a boron nitride evaporation boat, and an evaporation chamber vacuum of 7×10 -2 PaPa, evaporation boat current is 700A, voltage is 7V, wire feeding speed is 0.8m / min, PET film winding speed is 400m / min; b. Solvent-free lamination: The dried aluminum-plated and coated PET film is laminated with the porous aluminum foil (3) and the polyethylene diaphragm layer (4) using a solvent-free three-layer laminating machine under a laminating process. The laminating process is 3 laminating layers and the solvent-free adhesive coating amount is 0.8g / m 2 , coating temperature 45℃, composite temperature 35℃, composite speed 300m / min, the solvent-free adhesive is a two-component solvent-free polyurethane laminating adhesive; c. Winding and aging: winding speed 130m / min, winding tension 140N, after winding, mature for 18h at a temperature of 40℃ and a relative humidity of 50% to obtain an anti-static shielding and moisture-proof packaging film; d. The anti-static shielding and moisture-proof packaging film bag making machine makes bags.

[0022] like Figure 1As shown, the antistatic shielding and moisture-proof packaging film bag comprises a conductive static dissipative surface layer 1, an aluminized polyester layer 2, a porous aluminum foil 3, a polyethylene diaphragm layer 4, and a migrating static dissipative inner layer 5, which are arranged in sequence from outside to inside; the aluminum layer thickness of the aluminized polyester layer 2 is 30 nm, and the total thickness of the aluminized polyester layer 2 is 25 μm; the conductive static dissipative surface layer (1) is 10 μm thick; the inner surface of the aluminized polyester layer 2 is compositely bonded to the outer surface of the porous aluminum foil 3; the inner surface of the porous aluminum foil 3 is compositely bonded to the outer surface of the polyethylene diaphragm layer 4; the aluminized polyester layer 2 is made by aluminum plating of PET film; the conductive static dissipative surface layer 1 is formed by applying a conductive static coating on the outer side of the aluminized polyester layer 2 and curing it; the PET film contains 0.3 wt% of a migratable wetting agent, and the wetting agent is bis (β-hydroxyethyl) coconut amine; the wetting agent migrates to the inner surface of the polyethylene diaphragm layer 4 through the porous aluminum foil and the polyethylene diaphragm layer 4 to form the migrating static dissipative inner layer 5.

[0023] Product performance: The outer surface is clean, free of impurities, dust or oil; no process defects such as delamination, brittle cracks, pores, cuts, wrinkles, scratches, etc.; no structural defects such as unevenness, pinholes, cracks, sand holes, spots, foreign objects, fish eyes, gel points, etc. Sealing strength 51.8N / 25mm. Puncture resistance: single-sided puncture resistance 36.4N. Surface resistance of moisture-proof bag: the point-to-point resistance of the inner surface is 6.9×10 7 Ω (relative humidity 12%, temperature 23°C); the point-to-point resistance of the outer surface is less than 5.8×10 10 Ω. The internal induction charge is 5.4nJ at a relative humidity of 12% and a temperature of 23°C; the internal induction charge is 5.2nJ at a relative humidity of 50% and a temperature of 23°C; the water vapor permeability is 0.34g / m 2 24h (38℃, 90%RH), defective rate 0.03%.

[0024] Comparative Example 1 The antistatic shielding and moisture-proof packaging film bag comprises a conductive static dissipative surface layer, a polyester layer, a 0.05 mm thick pure aluminum foil, and a polyethylene film layer, which are arranged in sequence from outside to inside; the polyester layer is 25 μm thick; the conductive static dissipative surface layer is 10 μm thick; the inner surface of the polyester layer is compositely bonded to the outer surface of the pure aluminum foil; the inner surface of the pure aluminum foil is compositely bonded to the outer surface of the polyethylene film 4; the polyester layer is made by aluminum plating on the PET film; the conductive static dissipative surface layer is formed by applying a conductive static coating on the outside of the polyester layer and curing it; the PET film contains 0.3 wt% of a migratable wetting agent, the wetting agent is bis (β-hydroxyethyl) coconut amine, and the remaining processing steps are the same as those in Example 1. Compared with Example 1, a polyester layer without aluminum plating, pure aluminum foil and polyethylene film are used as raw materials.

[0025] Product performance: The outer surface is clean, free of impurities, dust, and oil; some have process defects such as delamination, brittle cracks, pores, cuts, wrinkles, scratches, etc.; some have structural defects such as unevenness, pinholes, cracks, sand holes, spots, foreign objects, fish eyes, gel points, etc. Sealing strength 42.5N / 25mm. Puncture resistance: single-sided puncture resistance 37.1N. Surface resistance Moisture-proof bag surface resistance: the point-to-point resistance of the inner surface is 8.4×10 10 Ω (relative humidity 12%, temperature 23°C); the point-to-point resistance of the outer surface is less than 7.9×10 10 Ω. The induced charge is 6.8nJ at a relative humidity of 12% and a temperature of 23°C; the induced charge is 6.4nJ at a relative humidity of 50% and a temperature of 23°C; the water vapor permeability is 0.2g / m 2 24h (38℃, 90%RH), defective rate 0.36%.

[0026] In summary, it can be seen that the structure of the conductive static dissipative surface layer, aluminized polyester layer, porous aluminum foil, polyethylene diaphragm layer, and migration static dissipative inner layer arranged in sequence from the outside to the inside has the functions of static dissipation, sealing, heat insulation, and moisture-proof. The combined application of the aluminized layer and the porous aluminum foil greatly reduces the use of aluminum materials and reduces production costs. The use of porous aluminum foil and wetting agent can improve the adhesive infiltration, enhance the adhesion of the aluminum foil surface, reduce the use of solvent-free polyurethane laminating adhesive, and improve the composite effect. It can increase the bending softness of the film bag, which is more suitable for the use of static shielding packaging bags and reduces costs. The wetting agent increases the adhesion with the porous aluminum foil. The tensile strength of the porous aluminum foil is not significantly lower than that of the pure aluminum foil, which reduces the proportion of aluminum foil in the mass of the anti-static shielding and moisture-proof packaging film bag. After the solvent-free polyurethane laminating adhesive is cured, the wetting agent can also migrate through the porous aluminum foil and polyethylene diaphragm to the inner surface of the polyethylene diaphragm layer to form a migrating static dissipative inner layer. The static dissipative function of the packaging film bag will not fail due to friction during use. The static dissipative function is long-lasting and can also absorb trace moisture in the packaging bag to form a static dissipative channel, which can effectively isolate the objects from the external static field and prevent static electricity from being generated in the bag. Example 2

[0027] Raw materials and equipment: Xinshida compound machine WRJi5-1000A; fully automatic die-cutting machine Lifei 2400; porous aluminum foil WHL04 with a thickness of 0.01mm, a pore size of 10μm, and a pore density of 400 / cm 2Full-surface microporous aluminum foil; Huai'an Ruifa New Material 5030 two-component A / B solvent-free polyurethane laminating adhesive, including 100 parts A and 75 parts B; oily ATO transparent acrylic antistatic coating PDR-079; Xinshida glue mixer WRJ5-2. Hai'an Petrochemical Plant B-2 bis (β-hydroxyethyl) coconut amine. Sinoma polyethylene diaphragm layer with a porosity of 45%, a thickness of 12μm, and a surface density of 4.7g / m 2 .

[0028] The production method of anti-static shielding and moisture-proof packaging film bags comprises the following steps: a. Yizheng FG604PET film-grade slices are extruded and cast into PET film, and the upper surface of the PET film is aluminum-plated to obtain an aluminum-plated polyester layer 2, and then the upper surface of the aluminum-plated polyester layer is coated to form a conductive static dissipative surface layer 1, so as to obtain an aluminum-plated and coated PET film, wherein the above-mentioned PET film-grade slices contain 0.5wt% of a migratable wetting agent, and the above-mentioned wetting agent is bis(β-hydroxyethyl) coconut amine, and the extrusion casting molding process is that the processing temperature is 290°C, the extrusion temperature is 295°C from the die head, and the film is directly cast onto a cold roller, and the temperature of the sheet after peeling off the cold roller reaches 60°C, and then the sheet is heated to 100°C and stretched to 4.0 by a longitudinal infrared stretching roller to form a thick sheet, and then enters a transverse box with a stretching temperature of 125°C, and is subjected to a heat setting treatment of a stretching ratio of 3.5 and a temperature of 250°C to form a film, and the PET aluminum plating process is to use a Φ1.5mm aluminum wire, a boron nitride evaporation boat, and an evaporation chamber vacuum of 9×10 -2 Pa, evaporation boat current is 800A, voltage is 8V, wire feeding speed is 1.2m / min, PET film winding speed is 450m / min; b. Solvent-free lamination: The dried aluminum-plated and coated PET film is compounded with porous aluminum foil 3 and polyethylene diaphragm layer 4 by a solvent-free three-layer laminating machine under the laminating process. The laminating process is 3 layers and the solvent-free adhesive coating amount is 1g / m 2 , coating temperature 55℃, composite temperature 45℃, composite speed 500m / min, the solvent-free adhesive is a two-component solvent-free polyurethane laminating adhesive; c. Winding and aging: winding speed 150m / min, winding tension 170N, after winding, mature at a temperature of 50℃ and a relative humidity of 75% for 24h to obtain an anti-static shielding and moisture-proof packaging film; d. The anti-static shielding and moisture-proof packaging film bag making machine makes bags.

[0029] like Figure 1As shown, the antistatic shielding and moisture-proof packaging film bag comprises a conductive static dissipative surface layer 1, an aluminized polyester layer 2, a porous aluminum foil 3, a polyethylene diaphragm layer 4, and a migrating static dissipative inner layer 5 which are arranged in sequence from outside to inside; the aluminum layer thickness of the aluminized polyester layer 2 is 40nm, and the total thickness of the aluminized polyester layer 2 is 30μm; the conductive static dissipative surface layer 1 is 15μm thick; the inner surface of the aluminized polyester layer 2 is compositely bonded to the outer surface of the porous aluminum foil 3; the inner surface of the porous aluminum foil 3 is compositely bonded to the outer surface of the polyethylene diaphragm layer 4; the aluminized polyester layer 2 is made by aluminum plating of PET film; the conductive static dissipative surface layer 1 is formed by applying a conductive static coating on the outer side of the aluminized polyester layer 2 and curing it; the PET film contains 0.5wt% of a migratable wetting agent; the wetting agent migrates to the inner surface of the polyethylene diaphragm layer 4 through the porous aluminum foil and the polyethylene diaphragm layer 4 to form a migrating static dissipative inner layer 5.

[0030] Product performance: The outer surface is clean, free of impurities, dust, and oil; there are no process defects such as delamination, brittle cracks, pores, cuts, wrinkles, scratches, etc.; there are no structural defects such as unevenness, pinholes, cracks, sand holes, spots, foreign objects, fish eyes, gel points, etc. Sealing strength 40.5N / 25mm. Puncture resistance: single-sided puncture resistance 27.2N. Surface resistance of moisture-proof bag: the point-to-point resistance of the inner surface is 7.4×10 8 Ω (relative humidity 12%, temperature 23°C); the point-to-point resistance of the outer surface is less than 1.2×10 9 Ω. The internal induced charge is 6.4nJ at a relative humidity of 12% and a temperature of 23°C; the internal induced charge is 6.2nJ at a relative humidity of 50% and a temperature of 23°C; the water vapor permeability is 0.26g / m 2 24h (38℃, 90%RH), defective rate 0.02%.

[0031] Note: Refer to the following standards for testing: GB / T39588-2020 Requirements and test methods for electrostatic shielding packaging bags; T / ZSECA005-2020 Requirements and test methods for electrostatic shielding packaging bags.

Claims

1. An anti-static shielding moisture-proof packaging film bag, characterized in that: The antistatic shielding and moisture-proof packaging film bag comprises a conductive static dissipative surface layer (1), an aluminized polyester layer (2), a porous aluminum foil (3), a polyethylene diaphragm layer (4), and a migrating static dissipative inner layer (5) which are arranged in sequence from outside to inside; the inner surface of the aluminized polyester layer (2) is compositely bonded to the outer surface of the porous aluminum foil (3); the inner surface of the porous aluminum foil (3) is compositely bonded to the outer surface of the polyethylene diaphragm layer (4); the aluminized polyester layer (2) is obtained by aluminizing a PET film; the conductive static dissipative surface layer (1) is formed by applying a static conductive coating on the outer side of the aluminized polyester layer (2) and curing the coating; the PET film contains 0.3-0.5 wt% of a migrating wetting agent, the wetting agent being one of stearic acid diethanolamine or N-dodecylethanolamine; the wetting agent migrates to the inner surface of the polyethylene diaphragm layer (4) through the porous aluminum foil and the polyethylene diaphragm layer (4) to form the migrating static dissipative inner layer (5).

2. The anti-static shielding and moisture-proof packaging film bag according to claim 1, characterized in that: The porous aluminum foil (3) has a thickness of 0.01 to 0.05 mm, a pore size of 5 to 10 μm, and a pore density of 400 to 500 pores / cm 2 Full surface microporous aluminum foil.

3. The anti-static shielding and moisture-proof packaging film bag according to claim 1, characterized in that: The aluminum layer thickness of the aluminum-plated polyester layer (2) is 30 to 40 nm, and the total thickness of the aluminum-plated polyester layer (2) is 25 μm to 30 μm.

4. The anti-static shielding and moisture-proof packaging film bag according to claim 1, characterized in that: The polyethylene diaphragm layer (4) has a porosity of 40% to 45%, a thickness of 9 to 12 μm, and a surface density of 4.1 to 4.7 g / m 2 .

5. The anti-static shielding and moisture-proof packaging film bag according to claim 1, characterized in that: The conductive static dissipative surface layer (1) has a thickness of 10 to 15 μm.

6. A method for producing an anti-static shielding moisture-proof packaging film bag, characterized in that: The following steps are involved: a. After the PET film-grade slices are extruded and cast into a PET film, the upper surface of the PET film is aluminum-plated to obtain an aluminum-plated polyester layer (2), and then the upper surface of the aluminum-plated polyester layer is coated to form a conductive static dissipative surface layer (1), thereby obtaining an aluminum-plated and coated PET film, wherein the PET film-grade slices contain 0.3-0.5 wt% of a migratable wetting agent, wherein the wetting agent is one of stearic acid diethanolamine or N-dodecylethanolamine; b. Solvent-free lamination: the dried aluminum-plated and coated PET film is compounded with a porous aluminum foil (3) and a polyethylene diaphragm layer (4) using a solvent-free three-layer laminating machine under a laminating process; c. Winding and aging: the winding speed is 130-150 m / min and the winding tension is 140-170 N. After winding, the film is aged for 18-24 h at a temperature of 40-50° C. and a relative humidity of 50%-75% to obtain an antistatic shielding and moisture-proof packaging film; d. The anti-static shielding and moisture-proof packaging film bag making machine makes bags.

7. The method for producing an anti-static shielding and moisture-proof packaging film bag according to claim 6, characterized in that: The extrusion casting process in step a is as follows: the processing temperature is 270-290° C., the die extrusion temperature is 285-295° C., and the film is directly cast onto a cold roller to a temperature of 40-60° C.; the longitudinal stretching temperature is 90-100° C. and the stretching ratio is 3.3-4.0; the transverse stretching temperature is 115-125° C. and the stretching ratio is 3.3-3.5; and the film is heat-set at a temperature of 230-250° C. to form a film.

8. The method for producing an anti-static shielding moisture-proof packaging film bag according to claim 6, characterized in that: The PET aluminum plating process in step a is as follows: the vacuum degree of the evaporation chamber is 7×10 -2 Pa~9×10 -2 Pa, evaporation boat current is 700-800A, voltage is 7-8V, wire feeding speed is 0.8-1.2m / min, PET film winding speed is 400-450m / min.

9. The method for producing an anti-static shielding moisture-proof packaging film bag according to claim 6, characterized in that: The composite process in step b is as follows: the composite layer number is 3 layers, the coating amount of the solvent-free adhesive is 0.8-1 g / m 2 , coating temperature 45 ~ 55 ℃, composite temperature 35 ~ 45 ℃, composite speed 300 ~ 500m / min, the solvent-free adhesive is a two-component solvent-free polyurethane laminating adhesive.

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