Semi-pull-lug easy-uncovering aluminum foil sealing film and preparing method thereof

A semi-tearing and sealing film technology, applied in chemical instruments and methods, sealing, closing, etc., can solve the problems of difficult storage, poor stability, and uneven sealing strength of the sealing film, so as to improve the heat sealing strength and heat sealing stability , uniform distribution, close contact effect

Active Publication Date: 2013-09-11
ZHEJIANG GOLDSTONE PACKING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: the easy-to-remove aluminum foil sealing film in the prior art has the problems of poor stability, uneven sealing strength and diffi

Method used

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  • Semi-pull-lug easy-uncovering aluminum foil sealing film and preparing method thereof
  • Semi-pull-lug easy-uncovering aluminum foil sealing film and preparing method thereof
  • Semi-pull-lug easy-uncovering aluminum foil sealing film and preparing method thereof

Examples

Experimental program
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Example Embodiment

[0038] Example 1

[0039] A semi-pull ear easy-to-peel aluminum foil sealing film, which is sequentially provided with a protective layer and an adhesive layer from top to bottom; the protective layer is composed of an integrally formed adhesive part and a free part, the adhesive part and the free part from above A first BOPET film layer 1 with a thickness of 20 μm and a PE film layer 2 with a thickness of 10 μm are sequentially arranged from the bottom; the bonding layer is sequentially provided with a second BOPET film layer 3 with a thickness of 12 μm and a thickness of The aluminum foil layer 4 with a thickness of 7 μm and the heat-seal layer 5 with a thickness of 10 μm; the PE film layer 2 in the bonding part and the second BOPET film layer 3 in the bonding layer are bonded into an integrated structure, the The free part constitutes a pull-ear structure; wherein the area of ​​the bonding part accounts for 1 / 2 of the area of ​​the aluminum foil sealing film, and the heat-s...

Example Embodiment

[0046] Example 2

[0047] A semi-pull ear easy-to-peel aluminum foil sealing film, which is sequentially provided with a protective layer and an adhesive layer from top to bottom; the protective layer is composed of an integrally formed adhesive part and a free part, the adhesive part and the free part from above A first BOPET film layer 1 with a thickness of 30 μm and a PE film layer 2 with a thickness of 14 μm are arranged in order from the bottom; the bonding layer is successively provided with a second BOPET film layer 3 with a thickness of 14 μm and a thickness from top to bottom. An aluminum foil layer 4 with a thickness of 12 μm and a heat-seal layer 5 with a thickness of 20 μm; the PE film layer 2 in the bonding part and the second BOPET film layer 3 in the bonding layer are bonded into an integrated structure, the The free part constitutes a pull-ear structure; wherein the bonding part occupies 2 / 3 of the area of ​​the entire aluminum foil sealing film, and the heat-s...

Example Embodiment

[0053] Example 3

[0054] A semi-pull ear easy-to-peel aluminum foil sealing film, which is sequentially provided with a protective layer and an adhesive layer from top to bottom; the protective layer is composed of an integrally formed adhesive part and a free part, the adhesive part and the free part from above A first BOPET film layer 1 with a thickness of 35 μm and a PE film layer 2 with a thickness of 18 μm are arranged in order from the bottom; the bonding layer is successively provided with a second BOPET film layer 3 with a thickness of 15 μm and a thickness from top to bottom. The aluminum foil layer 4 with a thickness of 20 μm and the heat-seal layer 5 with a thickness of 30 μm; the PE film layer 2 in the bonding part and the second BOPET film layer 3 in the bonding layer are bonded into an integrated structure, the The free part constitutes a pull-tab structure, wherein the area of ​​the bonding part accounts for 1 / 2 of the area of ​​the aluminum foil sealing film, ...

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Abstract

The invention provides a semi-pull-lug easy-uncovering aluminum foil sealing film and a preparing method thereof, and belongs to the technical field of package. The sealing film is sequentially provided with a protection layer and an adhering layer from top to bottom; the protection film is composed of an adhering part and a free part, the adhering part and the free part are formed in an integrated mode, and the adhering part and the free part are respectively and sequentially provided with a first BOPET film layer and a PE film layer from top to bottom; the adhering layer is sequentially provided with a second BOPET film layer, an aluminum foil layer and a heat-seal layer from top to bottom; the PE film layer in the adhering part and the second BOPET film layer in the adhering layer are adhered into a whole, and the free part is of a pull-lug structure; EVA and EMAA are evenly mixed and then blow molding is conducted at the temperature of 150-170 DEG C to prepare the heat seal layer, wherein the weight ratio of the EVA is 80-90%, the melt index of the EVA is 3-9g/min, the weight ratio of the EMAA is 10-20%, and the melt index of the EMAA is 2-5g/min. The semi-pull-lug easy-uncovering aluminum foil sealing film has excellent easy-uncovering performance and seal intensity performance.

Description

technical field [0001] The invention relates to an aluminum foil sealing film that is easy to peel off with half-twist ears, and belongs to the technical field of plastic packaging. Background technique [0002] Aluminum foil sealing film is widely used in plastic bottle packaging. Aluminum foil sealing film is usually composed of polyethylene terephthalate (PET) film, polyethylene film, aluminum foil, and polyethylene film from top to bottom. Among them, the top layer of polyethylene terephthalate ( PET) film is the outer layer, which acts as a protective layer for the sealing film, and the bottom polyethylene film is the inner layer, which acts as a heat-sealing layer for the sealing film. [0003] When the aluminum foil sealing film in the prior art seals the bottle mouth, an overhanging ear is usually provided on the aluminum foil sealing film for the user to open. Fold back or fold down and then seal. When the sealing film is sealed after the ear is folded back, becau...

Claims

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Application Information

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IPC IPC(8): B65D53/08B32B27/26B32B27/30
Inventor 曾文明张文锋何松挺计锋杨虎平
Owner ZHEJIANG GOLDSTONE PACKING
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