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Aluminum foil package material, and preparation method and application of aluminum foil package material

A packaging material and aluminum foil technology, applied in the direction of film/sheet adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of reduced sealing performance, insufficient adhesion, and large waste of resources , to achieve the effect of good sealing, low production cost and low moisture permeability

Inactive Publication Date: 2018-10-02
温州市瑞欣印务包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EPE pearl cotton material and sticky aluminum foil are low in cost, but there is a problem of insufficient adhesion when applied to glass bottle sealing; moreover, the elasticity of EPE pearl cotton material is limited, and its sealing performance will decrease and cause leakage after long-term use
However, the composite use of EPE pearl cotton and aluminum foil causes high cost and waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] In the present invention, the preparation method of described hot melt adhesive preferably comprises the following steps:

[0037] Mix paraffin wax, EVA resin, rubber, rosin resin, antioxidant and curing solvent, stir and dissolve at 185°C±5°C to obtain a mixed material;

[0038] The mixed material is aged at 50° C.±2° C. for 36-40 hours to obtain a hot melt adhesive.

[0039] In the present invention, there is no special limitation on the stirring rate and time, as long as the stirring technical solution well known to those skilled in the art can be used to fully mix and dissolve each component.

[0040] In the present invention, there is no special limitation on the ripening, and the technical solution of ripening known to those skilled in the art can be adopted.

[0041] The hot melt adhesive provided by the invention has strong viscosity, which can ensure the good sealing performance of the aluminum foil packaging material, and at the same time, the pulling force f...

Embodiment 1

[0060] Put the polyurethane glue into the glue tray of the dry lamination machine (the temperature is controlled at 50°C ± 2°C), and by fine-tuning the distance and thickness of the hot roller (the temperature is controlled at 50°C ± 2°C) in the dry lamination machine, the polyurethane The adhesive is adhered to the hot roller, and the polyurethane rubber roller is coated on the BOPET film by tensioning and rolling the BOPET film, aluminum foil, and HDPE film (the tension force is 4.5N / m, and the rolling coating speed is 110m / min). Glue-coated composite materials are obtained between aluminum foil and aluminum foil and HDPE film;

[0061] Pass the glue-coated composite material at a uniform speed (the passing rate is 110m / min) in a three-stage oven (the temperature of the first stage is 65°C ± 5°C, the temperature of the second stage is 75°C ± 5°C, the temperature of the third stage is 85°C ± 5°C, The length of each section is 1.8m) to cure and bake, to form the first polyuret...

Embodiment 2

[0070] The aluminum foil packaging material is prepared according to the method of Example 1, the difference is that the thickness of the BOPET film in the aluminum foil packaging material is 0.015mm, the first polyurethane adhesive layer is 0.003mm, the thickness of the aluminum foil is 0.025mm, and the thickness of the HDPE film is 0.015mm. 0.045mm, the thickness of the second polyurethane adhesive layer is 0.003mm, and the thickness of the hot melt adhesive layer is 0.16mm.

[0071] Taking a glass bottle mouth with a diameter of 80mm and a width of 4mm as an example, the sealing effect of the aluminum foil packaging material prepared in this embodiment is measured, as follows:

[0072] Cut the aluminum foil packaging material into shape according to the size of the glass bottle mouth, and then use an electromagnetic induction sealing machine to carry out the sealing operation (the rated voltage is 240V, and it takes 1.2s to perform the sealing operation); after placing the s...

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Abstract

The invention provides an aluminum foil package material. A polyester film in the aluminum foil package material serves as an outer layer of the aluminum foil package material and has the advantages of puncture resistance, high and low temperature resistance, and oil resistance, and good toughness, airtightness and fragrance protectiveness; aluminum foil has the advantages of moisture proofing, airtightness, light proofing, corrosion resistance, fragrance protectiveness, nontoxicity and no odor; a polyethylene film is low in moisture permeability and can exert a moisture-proof effect; a firstpolyurethane glue layer and a second polyurethane glue layer formed by polyurethane glue can exert adhesive effects on the polyester film and the aluminum foil that are arranged on the two sides of the first polyurethane glue layer, and the aluminum foil and the polyethylene film that are arranged on the two sides of the second polyurethane glue layer; a hot melt adhesive has strong viscosity; anda hot melt adhesive layer formed by the hot melt adhesive can ensure that the aluminum foil package material has good sealability and an unsealing pull force is not too large at the same time. In addition, expensive raw materials are not required for preparation of the aluminum foil package material, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to an aluminum foil packaging material and its preparation method and application. Background technique [0002] Packaging materials refer to the materials used to make packaging containers, packaging decoration, packaging printing, packaging and transportation to meet product packaging requirements, including metal, plastic, glass, ceramics, paper, bamboo, wild mushrooms, natural fibers, chemical fibers , composite materials, etc. [0003] At present, most of the glass bottles for food and medicine on the market are sealed with EPE pearl cotton material, sticky aluminum foil, or combined with EPE pearl cotton and aluminum foil for packaging and sealing. EPE pearl cotton material and viscous aluminum foil are low in cost, but there is a problem of insufficient adhesion when applied to glass bottle sealing; moreover, the elasticity of EPE pearl cotton material is limited...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/29C09J7/30C09J123/08C09J11/04
CPCC08K2003/166C08L2201/08C08L2205/035C09J7/29C09J7/30C09J11/04C09J123/0853C09J2301/304C09J2301/312C09J2301/408C09J2301/414C09J2400/163C09J2423/046C09J2467/006C08L21/00C08L93/04C08L91/06C08K3/16C08K5/13
Inventor 毛童瑶毛德尧毛德舜木数弟
Owner 温州市瑞欣印务包装有限公司
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