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A kind of preparation method of easy-tear aluminum foil

An easy-to-tear cover and aluminum foil technology, which is applied to the surface coating liquid device, pretreatment surface, coating, etc., can solve the problems of low production efficiency and poor sealing performance of the sealing film, and achieve simple steps and high production efficiency , the effect of uniform coating

Active Publication Date: 2018-08-17
HUZHOU JINJIE IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the preparation process of the parafilm in this invention has the problems of low preparation efficiency and poor sealing performance of the prepared parafilm

Method used

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  • A kind of preparation method of easy-tear aluminum foil

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Effect test

Embodiment 1

[0019] Embodiment 1: as attached figure 1 As shown, a method for preparing an aluminum foil with an easy-to-tear lid includes the following steps: (1) unwinding of the aluminum foil: the aluminum foil is divided into rolls on a machine; (2) coating of a protective agent: coating one side of the aluminum foil for The protective agent coating that forms the protective layer, the coating amount is 1.0g / ㎡; (3) heating and drying: the aluminum foil protective layer is heated and dried, and the temperature of the drying room is 190 ° C; (4) protective layer cooling: the The protective layer is cooled by cold air and cooling rollers, so that the temperature of the protective layer after cooling is 40°C; (5) Heat-sealing glue coating: coating on the other side of the aluminum foil to form a heat-sealing layer (6) Heating and drying: heat and dry the heat-sealing layer of the aluminum foil, and the temperature of the drying room is 160°C; (7) Cooling the heat-sealing layer: cooling the...

Embodiment 2

[0024] Embodiment 2: as attached figure 1 As shown, a method for preparing an aluminum foil with an easy-to-tear lid includes the following steps: (1) unwinding of the aluminum foil: the aluminum foil is divided into rolls on a machine; (2) coating of a protective agent: coating one side of the aluminum foil for The protective agent coating that forms the protective layer, the coating amount is 1.2g / ㎡; (3) heating and drying: the aluminum foil protective layer is heated and dried, and the temperature of the drying room is 210 ° C; (4) protective layer cooling: the The protective layer is cooled by cold air and cooling rollers, so that the temperature of the protective layer after cooling is 42°C; (5) Heat-sealing glue coating: coating on the other side of the aluminum foil to form a heat-sealing layer (6) Heating and drying: heat and dry the heat-sealing layer of the aluminum foil, and the temperature of the drying room is 200°C; (7) Cooling the heat-sealing layer: cooling the...

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Abstract

The invention belongs to the technical field of packaging materials and particularly relates to a preparation method of aluminum foil for a cover easy to tear. The preparation method comprises the following steps that (1) the aluminum foil is unwound; (2) the aluminum foil is coated with a protective agent, and the coating quantity of the protective agent is 1.0-1.2 g / m<2>; (3) heating and drying are conducted in a drying chamber at the temperature of 190-210 DEG C; (4) a protective layer is cooled; (5) a hot-seal adhesive is coated, and the coating quantity of the hot-seal adhesive is 9.5-11.0 g / m<2>; (6) heating and drying are conducted in the drying chamber at the temperature of 160-200 DEG C; (7) a hot-seal layer is cooled; and (8) the aluminum foil is wound. According to the preparation method of the aluminum foil for the cover easy to tear, the aluminum foil for the cover easy to tear is prepared by preparing the protective layer and the hot-seal layer on the two sides of the aluminum foil respectively. The preparation method of the aluminum foil for the cover easy to tear has the advantages that the steps are simple, the number of pieces of required equipment is small, the production efficiency is high, the coatings are even, and disengagement and separation are unlikely to occur.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, in particular to a method for preparing an aluminum foil with an easy-tear lid. Background technique [0002] At present, the easy-to-tear cover scheme adopted in the sealing of food cans such as milk powder cans and coffee cans is composed of tinplate, plain iron, coated iron cover ring and aluminum foil film. A kind of sealing film after aluminum foil is coated with paint. [0003] The Chinese invention patent with the patent publication number of CN 101665174A and the publication date of 2010.03.10 discloses a hot-melt adhesive aluminum foil sealing film and its manufacturing method including a protective layer, a barrier layer, a base layer and a heat-sealing layer in sequence; the barrier layer is Aluminum foil layer; the base layer is a polyethylene film layer or cast polypropylene film layer. The manufacturing method includes the following steps: (1) Manufacturing the blank f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D7/14B05D3/04B05D3/06B05D3/02
CPCB05D3/0263B05D3/0413B05D3/0426B05D3/065B05D7/14B05D2202/25
Inventor 郑水法周立新
Owner HUZHOU JINJIE IND CO LTD
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