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Aluminum foil of easily torn cover

A technology of easy-tear cover and aluminum foil, which can be used in flexible coverings, packaged foods, packaged items, etc., and can solve the problems of poor barrier protection effect and easy residual adhesive layer.

Active Publication Date: 2016-04-06
湖州金洁包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, this invention has the problem that the barrier protection effect is poor, and the adhesive layer is easy to remain after the packaging film is torn off.

Method used

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  • Aluminum foil of easily torn cover
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  • Aluminum foil of easily torn cover

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: An aluminum foil with an easy-to-tear cover includes a barrier layer, a protective layer arranged on the barrier layer and a heat-sealing layer arranged below the barrier layer, and the protective layer is made of acrylic resin, ethyl acetate ester, polyamide resin and silicone slip agent, and the barrier layer is made of acrylic resin, polyolefin resin, ethyl acetate, MDI polyurethane and liquid paraffin. The protective layer is a mixture of the following ingredients:

[0039] Acrylic: 59 parts,

[0040] Ethyl acetate: 15 parts,

[0041] Polyamide resin: 23 parts,

[0042] Silicone slip agent: 3 parts.

[0043] The heat-sealing layer is formed by mixing the following components:

[0044] Acrylic: 21 parts,

[0045] Polyolefin resin: 25 parts,

[0046] Ethyl acetate: 15 parts,

[0047] MDI type polyurethane: 32 parts,

[0048] Liquid paraffin: 7 parts.

[0049] Wherein said polyolefin resin comprises:

[0050] Low-density polyethylene: 80 parts, ...

Embodiment 2

[0054] Embodiment 2: an aluminum foil with an easy-to-tear cover, including a barrier layer, also includes a protective layer arranged on the barrier layer and a heat-sealing layer arranged below the barrier layer, and the protective layer is made of acrylic resin, ethyl acetate ester, polyamide resin and silicone slip agent, and the barrier layer is made of acrylic resin, polyolefin resin, ethyl acetate, MDI polyurethane and liquid paraffin. The protective layer is a mixture of the following ingredients:

[0055] Acrylic: 58 parts,

[0056] Ethyl acetate: 14 parts,

[0057] Polyamide resin: 25 parts,

[0058] Silicone slip agent: 3 parts.

[0059] The easy-tear aluminum foil of this embodiment is made into a sample, and the conditions of other components in the sample are equal to those of Example 1, and the peel strength and performance of the protective layer and the barrier layer are tested, and the test results are recorded .

Embodiment 3

[0060] Embodiment 3: an aluminum foil with an easy-to-tear cover, including a barrier layer, also includes a protective layer arranged on the barrier layer and a heat-sealing layer arranged below the barrier layer, and the protective layer is made of acrylic resin, ethyl acetate ester, polyamide resin and silicone slip agent, and the barrier layer is made of acrylic resin, polyolefin resin, ethyl acetate, MDI polyurethane and liquid paraffin. The protective layer is a mixture of the following ingredients:

[0061] Acrylic: 63 parts,

[0062] Ethyl acetate: 10 parts,

[0063] Polyamide resin: 24 parts,

[0064] Silicone slip agent: 3 parts.

[0065] The easy-tear aluminum foil of this embodiment is made into a sample, and the conditions of other components in the sample are equal to those of Example 1, and the peel strength and performance of the protective layer and the barrier layer are tested, and the test results are recorded .

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Abstract

The invention relates to the field of packaging covers, in particular to aluminum foil of an easily torn cover. The aluminum foil comprises a blocking layer, a protective layer arranged on the upper surface of the blocking layer and a heat-seal layer arranged on the lower surface of the blocking layer, wherein the protective layer is formed by mixing acrylic resin, ethyl acetate, polyamide resin and an organosilicon slip agent; the blocking layer is formed by mixing acrylic resin, polyolefin resin, ethyl acetate and MDI polyurethane. The protective layer of the aluminum foil has the characteristics of corrosion resistance, oxidation resistance, bright and smooth surface and the like; the heat-seal layer has the characteristics of good sealing effect, air tightness, liquid tightness and no adhesive liquid residue on a cover ring after opening; the whole aluminum foil of easily torn cover further has the advantages of easiness in tearing and completeness in tearing.

Description

technical field [0001] The invention relates to the field of packaging covers, in particular to an aluminum foil for an easy-tear cover. Background technique [0002] At present, the easy-tear lids packaged in the mouth of food containers generally adopt the method of tinplate cover ring and aluminum foil film. The easy-tear lids have better barrier protection and easy opening characteristics, and are widely used in milk powder cans, coffee cans and other fields. [0003] The Chinese invention patent with the patent publication number CN103386788 and the publication date of 2013.11.13 discloses a packaging film, which successively includes an easy-tear layer, an aluminum foil layer, a low-density polyethylene layer and a coated paper layer. The easy-tear layer consists of The following components are mixed: low density polyethylene: 78-82%, high molecular polyethylene 4210: 14-16%, anti-adhesive agent KMB15F-4: 4-6%. The composition forming the easy-tear layer is a film-coa...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/20B32B27/30B32B27/32B32B27/40B32B9/04B32B15/082B65D65/40C08L33/00C08L75/04C08L23/06C08L23/12C08L91/06C08L77/00
CPCB32B9/04B32B15/082B32B27/08B32B27/20B32B27/308B32B27/32B32B27/40B32B2270/00B32B2307/7242B32B2307/7265B32B2307/752B32B2323/00B32B2377/00B32B2439/70B65D65/40C08L33/00C08L75/04C08L2201/08C08L2205/035C08L2207/066C08L77/00C08L23/06C08L23/12C08L91/06
Inventor 郑水法周立新
Owner 湖州金洁包装有限公司
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