A production process of holographic straight-plating laser aluminum foil

Abstract

The application discloses a production process of holographic straight-plating laser aluminum foil and relates to the technical field of laser aluminum foil.The production process comprises the following steps: hot pressing a holographic laser aluminum foil to be used by using an opp transfer film on a film press; pressing water-based peelable glue and aluminum foil into aluminum foil lining film by using a pET film on a compound machine; coating the aluminum foil surface of the aluminum foil lining film with solvent-free glue and compounding the aluminum foil surface with an opp holographic laser film on a solvent-free compound machine; peeling off the opp transfer film after good aging treatment; and performing aluminum plating treatment on the aluminum foil holographic layer surface of the aluminum foil lining film on an aluminum plating machine.The production process is simple, does not need to use organic solvents, is far superior to current production processes in terms of environmental protection and environmental pollution, does not need organic solvents, does not emit waste gas, is energy-saving and environment-friendly, has low production cost, can be applied to various packaging material production processes, provides more selection convenience for enterprises which have high environmental protection requirements but cannot change production environmental protection conditions, meets the production concept of green environmental protection, and is suitable for promotion and use.

Description

A production process for holographic direct-plating laser aluminum foil Technical Field

[0001] This invention relates to the field of laser aluminum foil technology, specifically to a production process for holographic direct-plating laser aluminum foil. Background Technology

[0002] Currently, the main types of paper used for cigarette inner linings are transfer paper and aluminum foil composite paper. Aluminum foil has low elongation and cannot be directly aluminum-plated. The main process for transfer paper inner linings is: film coating - aluminum plating - lamination - peeling - top coating. In production, the process remains relatively complex and results in significant losses. The transfer method involves coating a layer of adhesive with a hot-melt resin on films such as PET and BOPP. Aluminum plating is then performed under a vacuum of 0.008-0.08 Pa. The base paper and the aluminum-plated film are then laminated using an adhesive. After a period of curing, the aluminum layer is peeled off from the film substrate, leaving the aluminum layer attached to the base paper. To facilitate printing, a top coating is applied to the transferred base paper.

[0003] Holographic laser patterns are widely used in aluminum foil, food packaging film, and printed labels. The OPP transfer laser film relies heavily on organic solvents during lamination and transfer with substrates such as aluminum foil, PE film, cardboard, and coated paper. However, the current emphasis on green and environmentally friendly production methods in the packaging and printing industry has significantly increased the operating costs of current production processes for printing and packaging companies under these environmental conditions. Furthermore, existing dry lamination transfer processes have a machine speed of only 110 meters per minute, which greatly reduces the production efficiency of manufacturing companies. Therefore, we propose a production process for holographic direct-plating laser aluminum foil. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a production process for holographic direct-plating laser aluminum foil, which solves the problem that the OPP transfer laser film cannot be separated from organic solvents when it is laminated and transferred with substrates such as aluminum foil, PE film, cardboard, and coated paper. Currently, the green and environmentally friendly production methods advocated by the packaging and printing industry have greatly increased the operating costs of the current production processes of printing and packaging companies under such environmental conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a production process for holographic direct-plating laser aluminum foil, the production process comprising the following steps:

[0006] S1. Use OPP transfer film to hot press holographic lasers on a membrane press for later use;

[0007] S2. Use pET film to press water-based peelable adhesive and aluminum foil together to form an aluminum foil backing film on a laminating machine;

[0008] S3. Coat the aluminum foil side of the aluminum foil backing film with solventless adhesive and OPP holographic laser film on a solventless laminating machine, and perform transfer layer curing treatment.

[0009] S4. After the curing process is complete, peel off the OPP transfer film. No corona treatment is required, so that the aluminum foil side of the aluminum foil backing film retains the laser holographic layer.

[0010] S5. Then, the holographic layer of the aluminum foil backing film is aluminum-plated on the aluminum plating machine. After aluminum plating, the PET backing film is peeled off on the peeling machine without corona treatment. Then, it is rolled into a laser aluminum foil product and the product is wound and put into storage.

[0011] Optionally, the processing speed of the composite machine is 120 meters per minute.

[0012] Optionally, the solventless laminating machine has a processing speed of 220 meters per minute.

[0013] Optionally, the solvent-free adhesive is formulated from the following parts by weight: 100 parts liquid polybutadiene; 5-10 parts modified liquid polybutadiene; 10-20 parts carbon black; and 5-10 parts silica.

[0014] Optionally, the processing time for the transfer layer ripening treatment is 48 hours.

[0015] Optionally, the water-based peelable adhesive is prepared by mixing the following materials: polyester polyol, polyisocyanate, hydroxyl-containing acrylate, emulsifier, chain extender, acrylic group-containing substance, and water.

[0016] This invention provides a production process for holographic direct-plating laser aluminum foil. It has the following beneficial effects:

[0017] The production process of this holographic direct-plating laser aluminum foil is much simpler and eliminates the need for organic solvents. It is far superior to current production processes in terms of environmental protection, zero waste gas emissions, and environmental pollution. The solvent-free laminating machine achieves a production rate of 220 meters per minute, increasing productivity. Furthermore, it eliminates the need for organic solvents, produces no waste gas, is energy-saving and environmentally friendly, and has low production costs. It can be applied to various packaging material production processes, providing more convenient options for companies with high environmental requirements but unable to change their environmental production environment. It aligns with the concept of green and environmentally friendly production and is suitable for widespread use. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the process structure of the present invention. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1:

[0021] Please refer to Figure 1. This invention provides a technical solution: a production process for holographic direct-plating laser aluminum foil, the production process including the following steps:

[0022] S1. Use OPP transfer film to hot press holographic lasers on a membrane press for later use;

[0023] S2. Using a pET film, water-based peelable adhesive and aluminum foil are pressed together to form an aluminum foil backing film on a laminating machine. The processing speed of the laminating machine is 120 meters per minute. The water-based peelable adhesive is prepared by mixing the following materials: polyester polyol, polyisocyanate, hydroxyl-containing acrylate, emulsifier, chain extender, acrylic group-containing substance, and water.

[0024] S3. Apply solvent-free adhesive and OPP holographic laser film to the aluminum foil side of the aluminum foil backing film on a solvent-free laminating machine. The processing speed of the solvent-free laminating machine is 220 meters per minute. The solvent-free adhesive is made from the following mass ratio: 100 parts liquid polybutadiene; 5 parts modified liquid polybutadiene; 10 parts carbon black; 5 parts silica. Then, perform a transfer layer curing treatment for 48 hours.

[0025] S4. After the curing process is complete, peel off the OPP transfer film.

[0026] S5. Then, the holographic layer of the aluminum foil backing film is aluminum-plated on the aluminum plating machine. After aluminum plating, the PET backing film is peeled off on the peeling machine. Then, it is rolled into a laser aluminum foil product and the product is wound up and put into storage.

[0027] Example 2:

[0028] Please refer to Figure 1. This invention provides a technical solution: a production process for holographic direct-plating laser aluminum foil, the production process including the following steps:

[0029] S1. Use OPP transfer film to hot press holographic lasers on a membrane press for later use;

[0030] S2. Using a pET film, water-based peelable adhesive and aluminum foil are pressed together to form an aluminum foil backing film on a laminating machine. The processing speed of the laminating machine is 120 meters per minute. The water-based peelable adhesive is prepared by mixing the following materials: polyester polyol, polyisocyanate, hydroxyl-containing acrylate, emulsifier, chain extender, acrylic group-containing substance, and water.

[0031] S3. The aluminum foil backing is coated with solventless adhesive and OPP holographic laser film on a solventless laminating machine. The processing speed of the solventless laminating machine is 220 meters per minute. The solventless adhesive is made from the following mass ratio: 100 parts liquid polybutadiene; 8 parts modified liquid polybutadiene; 15 parts carbon black; 7 parts silica. The transfer layer is then cured for 48 hours.

[0032] S4. After the curing process is complete, peel off the OPP transfer film.

[0033] S5. Then, the holographic layer of the aluminum foil backing film is aluminum-plated on the aluminum plating machine. After aluminum plating, the PET backing film is peeled off on the peeling machine. Then, it is rolled into a laser aluminum foil product and the product is wound up and put into storage.

[0034] Example 3:

[0035] Please refer to Figure 1. This invention provides a technical solution: a production process for holographic direct-plating laser aluminum foil, the production process including the following steps:

[0036] S1. Use OPP transfer film to hot press holographic lasers on a membrane press for later use;

[0037] S2. Using a pET film, water-based peelable adhesive and aluminum foil are pressed together to form an aluminum foil backing film on a laminating machine. The processing speed of the laminating machine is 120 meters per minute. The water-based peelable adhesive is prepared by mixing the following materials: polyester polyol, polyisocyanate, hydroxyl-containing acrylate, emulsifier, chain extender, acrylic group-containing substance, and water.

[0038] S3. Apply solvent-free adhesive and OPP holographic laser film to the aluminum foil side of the aluminum foil backing film on a solvent-free laminating machine. The processing speed of the solvent-free laminating machine is 220 meters per minute. The solvent-free adhesive is made from the following mass ratio: 100 parts liquid polybutadiene; 10 parts modified liquid polybutadiene; 20 parts carbon black; 10 parts silica. Then, perform a transfer layer curing treatment for 48 hours.

[0039] S4. After the curing process is complete, peel off the OPP transfer film.

[0040] S5. Then, the holographic layer of the aluminum foil backing film is aluminum-plated on the aluminum plating machine. After aluminum plating, the PET backing film is peeled off on the peeling machine. Then, it is rolled into a laser aluminum foil product and the product is wound up and put into storage.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A production process for holographic direct-plating laser aluminum foil, characterized in that: The production process includes the following steps: S1, using OPP transfer film to hot press out holographic laser on a film press for later use; S2, using PET film to press water-based peelable adhesive and aluminum foil into aluminum foil backing film on a laminating machine; S3, using the aluminum foil side of the aluminum foil backing film to coat with solvent-free adhesive and OPP holographic laser film on a solvent-free laminating machine, and performing a transfer layer curing treatment; S4, after curing treatment, peeling off the OPP transfer film; S5, then using this aluminum foil backing film, the holographic layer of the aluminum foil is aluminum-plated on an aluminum plating machine, and after aluminum plating treatment, the PET backing film is peeled off on a peeling machine, and then wound into a laser aluminum foil product, and the product is wound and stored in the warehouse; the processing speed of the solvent-free laminating machine is 220 meters per minute.

2. The production process of holographic direct-plating laser aluminum foil according to claim 1, characterized in that: The processing speed of the composite machine described in S2 is 120 meters per minute.

3. The production process of holographic direct-plating laser aluminum foil according to claim 1, characterized in that: The processing time for the transfer layer maturation treatment is 48 hours.

4. The production process of holographic direct-plating laser aluminum foil according to claim 1, characterized in that: The water-based peelable adhesive is prepared by mixing the following materials: polyester polyol, polyisocyanate, hydroxyl-containing acrylate, emulsifier, chain extender, acrylic group-containing substance, and water.

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