Aluminum foil openable cover and preparation method thereof

An easy-to-open cover and aluminum foil technology, which is applied in chemical instruments and methods, lamination, packaging, etc., can solve the problems of strong adhesion between aluminum foil packaging film and metal cover, difficulty in uncovering aluminum foil packaging film, and polluting products. Achieve excellent sealing performance and easy peeling performance, improve sealing performance, and improve compatibility

Active Publication Date: 2013-08-28
浙江博升新材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that in the prior art, the aluminum foil packaging film and the metal cover in the can-type packaging have a large adhesion force, which makes it difficult to uncover the aluminum foil packaging film, and the heat-sealing glue used is likely to cause metal damage. The problem of rust and contamination of products, and then provide an aluminum foil easy-to-open lid that can satisfy both easy-to-open and rust-resistant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An aluminum foil easy-to-remove cover, comprising a metal cover with an extraction hole and an aluminum foil packaging film used to block the extraction hole, the aluminum foil packaging film is sequentially provided with a protective layer, a barrier layer and Heat-sealing layer, the protective layer is a varnish layer with a thickness of 6 μm, the barrier layer is an aluminum foil layer with a thickness of 40 μm, the heat-sealing layer is a heat-sealing layer with a thickness of 75 μm, and the heat-sealing layer consists of the following weight The material composition of the parts is 25wt% polybutene with a melt index of 3.5g / min, 32wt% HDPE with a melt index of 1.2g / min and 43wt% metallocene polyethylene with a melt index of 0.8g / min.

[0026] The preparation method of the heat-sealing layer in this embodiment is as follows: the polybutene, the HDPE and the metallocene polyethylene are uniformly mixed and then blow-molded at 160°C.

[0027] The preparation method of...

Embodiment 2

[0033] An aluminum foil easy-to-remove cover, comprising a metal cover with an extraction hole and an aluminum foil packaging film used to block the extraction hole, the aluminum foil packaging film is sequentially provided with a protective layer, a barrier layer and Heat-sealing layer, the protective layer is a varnish layer with a thickness of 1 μm, the barrier layer is an aluminum foil layer with a thickness of 50 μm, the heat-sealing layer is a heat-sealing layer with a thickness of 20 μm, and the heat-sealing layer consists of the following weight The material composition of the parts is 10wt% polybutene with a melt index of 0.5g / min, 50wt% HDPE with a melt index of 0.3g / min and 40wt% metallocene polyethylene with a melt index of 1g / min.

[0034] The preparation method of the heat-sealing layer in this embodiment is as follows: the polybutene, the HDPE and the metallocene polyethylene are uniformly mixed and then blow-molded at 165°C.

[0035] The preparation method of t...

Embodiment 3

[0041] An aluminum foil easy-to-remove cover, comprising a metal cover with an extraction hole and an aluminum foil packaging film used to block the extraction hole, the aluminum foil packaging film is sequentially provided with a protective layer, a barrier layer and Heat-sealing layer, the protective layer is a varnish layer with a thickness of 2 μm, the barrier layer is an aluminum foil layer with a thickness of 60 μm, and the heat-sealing layer is a heat-sealing layer with a thickness of 30 μm, and the heat-sealing layer consists of the following parts by weight 20 wt% polybutene with a melt index of 1 g / min, 60 wt% HDPE with a melt index of 0.1 g / min and 20 wt% metallocene polyethylene with a melt index of 2 g / min.

[0042] The preparation method of the heat-sealing layer in this embodiment is as follows: the polybutene, the HDPE and the metallocene polyethylene are uniformly mixed and then blow-molded at 170°C.

[0043] The preparation method of the aluminum foil easy-to...

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Abstract

The invention provides an aluminum foil openable cover and a preparation method thereof, and belongs to the technical field of can-type package. The aluminum foil openable cover comprises a metal cover body and an aluminum foil packaging film, wherein an article taking-out hole is formed in the metal cover body; the aluminum foil packaging film is used for blocking the article taking-out hole, and is sequentially provided with a protection layer, a blocking layer and a heat-seal layer from top to bottom; a gloss oil layer is used as the protection layer; an aluminum foil layer is used as the blocking layer; and the heat-seal layer consists of 10 to 20 weight percent of polybutylene, 40 to 60 weight percent of high-density polyethylene (HDPE) and 20 to 40 weight percent of metallocene polyethylene. The prepared aluminum foil openable cover is high in sealing performance and high in openability.

Description

technical field [0001] The invention relates to an aluminum foil cover and a preparation method thereof, in particular to an aluminum foil easy-to-remove cover for can packaging and a preparation method thereof, belonging to the technical field of can packaging. Background technique [0002] Traditional canned milk powder packaging, the bottle cap is composed of three parts: embedded aluminum foil, ring iron, and iron cover. When opening, the iron cover should be pried off first, and then the aluminum foil should be cut with a sharp object before taking the milk powder. When the aluminum foil is cut, aluminum chips will often fall into the milk powder, posing a safety hazard. In addition, if the aluminum foil is cut, part of it will remain on the edge of the can mouth. The corners of this residual aluminum foil are extremely sharp, and it is very easy to scratch your fingers when taking milk powder, which is extremely unsafe. Today, with the increasingly accelerated pace of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D77/20B32B27/32B32B37/10B32B37/06B32B38/14B32B38/16
Inventor 曾文明赵向阳赵华杨虎平计锋
Owner 浙江博升新材料技术有限公司
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