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A moisture-proof and fresh-keeping composite aluminum foil paper

A technology of aluminum foil paper and aluminum foil layer, which is applied in packaging paper, synthetic resin layered products, paper/cardboard layered products, etc., can solve problems such as deterioration, high light transmittance of aluminum foil paper, cracks in aluminum foil paper, etc.

Active Publication Date: 2020-10-20
江苏佳意包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The holes in the aluminum foil used in the preparation process of the aluminum foil paper will lead to a high light transmittance of the aluminum foil paper, and the aluminum foil is relatively brittle, and the bending and other conditions during use can easily cause cracks in the aluminum foil paper, thus making the Light, air, water and other elements that are not conducive to moisture-proof and fresh-keeping enter the aluminum foil paper through cracks, creases and other parts, making the food and cigarettes inside damp, and even undergo chemical reactions to deteriorate

Method used

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  • A moisture-proof and fresh-keeping composite aluminum foil paper
  • A moisture-proof and fresh-keeping composite aluminum foil paper
  • A moisture-proof and fresh-keeping composite aluminum foil paper

Examples

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Embodiment Construction

[0039] The present invention is described in further detail now in conjunction with embodiment.

[0040] Such as figure 1 As shown, the moisture-proof and fresh-keeping composite aluminum foil paper includes a base paper layer 1 and an aluminum foil layer 2, the base paper layer 1 and the aluminum foil layer 2 are bonded by a tough adhesive layer 3, and an isolation layer 4 is provided outside the aluminum foil layer.

[0041] Wherein, the preparation method of the tough adhesive used in the tough adhesive layer 3 is:

[0042] (A) Bentonite is added to water and mixed uniformly;

[0043] (B) Mix polyurethane and epoxy resin evenly at 110-120°C, then cool down to room temperature, add the mixture obtained in step (A), stir evenly, then add 590 curing agent, stir evenly.

[0044] See Table 1 for the components and parts by weight of the ductile adhesive examples 1-4 and ductile adhesive comparative examples 1-5.

[0045] Table 1

[0046]

[0047] The preparation method fo...

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Abstract

The invention belongs to the technical field of packaging materials, and particularly relates to damp-proof fresh-keeping composite aluminum foil paper. The damp-proof fresh-keeping composite aluminumfoil paper comprises a base paper layer (1) and an aluminum foil layer (2), and is characterized in that the base paper layer (1) and the aluminum foil layer (2) are bonded through a tough bonding layer (3), and an isolation layer (4) is arranged on the outer side of the aluminum foil layer. The tough bonding layer is arranged between the aluminum foil layer and the base paper layer, epoxy resinmodified by polyurethane with excellent flexibility and elasticity and with excellent adhesive force and mechanical strength is used to prepare the tough bonding layer so as to improve the toughness of the aluminum foil paper and prevent the aluminum foil paper from cracking caused by repeated bending and the like in the use process so that light, air, water and other elements unfavorable for damp-proof and preservation cannot enter the aluminum foil paper through cracks, creases and other parts; and bentonite clay added in the tough bonding layer has very strong hygroscopicity, which is conducive to keeping the interior of aluminum foil paper dry.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a moisture-proof and fresh-keeping composite aluminum foil paper. Background technique [0002] Aluminum foil paper is a paper formed by compounding aluminum foil and base paper. It is widely used in aviation food packaging, ordinary meat packaging, cigarette packaging, etc. Aluminum foil paper for food and aluminum foil paper for cigarettes have high barrier properties to light, gas and water, and have moisture-proof and moisture-proof functions, so that food can be kept fresh, and cigarettes are not easy to decline in quality and aroma due to moisture. [0003] The holes in the aluminum foil used in the preparation process of the aluminum foil paper will lead to a high light transmittance of the aluminum foil paper, and the aluminum foil is relatively brittle, and the bending and other conditions during use can easily cause cracks in the aluminum foil pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B65D65/40B32B29/00B32B15/20B32B15/12B32B27/30B32B15/082B32B7/10
Inventor 陈志辉
Owner 江苏佳意包装科技有限公司
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