A kind of polyethylene film with high peeling strength with vmpet non-aluminized surface and preparation method thereof

A polyethylene film, high peeling technology, applied in the field of plastic flexible packaging, can solve the problems of instability, low peel strength between non-aluminized surface and PE film, and achieve the effect of improving adhesion, increasing polarity and high adhesion
CN107903465BActive Publication Date: 2020-07-07FOSHAN SOUTHERN PACKAGING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FOSHAN SOUTHERN PACKAGING
Publication Date
2020-07-07

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Abstract

The invention discloses a polyethylene film with high peeling strength on a non-aluminized surface of VMPET and a preparation method thereof. The polyethylene film comprises the following substances by weight: 5 to 15% of hydrogenated dimer acid / rosin-based polyester polyamide, 2 to 5% of maleic anhydride-grafted polyethylene and 80 to 93% of polyethylene, wherein the hydrogenated dimer acid / rosin-based polyester polyamide is prepared by reacting carboxyl-terminated polyamide with dihydric alcohol; the carboxyl-terminated polyamide is prepared by reacting hydrogenated dimer acid with maleic rosin acid and diamine, a weight ratio of the hydrogenated dimer acid to the maleic rosin acid is 5: 5 to 3: 7, and a ratio of the sum of the mole numbers of carboxyl groups in the hydrogenated dimer acid and the maleic rosin acid to the mole number of amino groups in the diamine is 1: 0.6-0.8; and a ratio of the mole number of hydroxyl groups in the dihydric alcohol to the mole number of carboxyl groups in the carboxyl-terminated polyamide is greater than or equal to 1.8: 1. The prepared polyethylene film in the invention has the advantages of smooth surface, uniform color and no foreign matters, and high peeling strength on the non-aluminized surface of a VMPET film.
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Description

technical field

[0001] The invention relates to the technical field of plastic flexible packaging, and more specifically relates to a polyethylene film with high peel strength from a VMPET non-aluminized surface and a preparation method thereof. Background technique

[0002] Aluminum-coated composite film is a compound of aluminum-coated film and transparent plastic film, which is a relatively common film in flexible packaging production. Its excellent barrier properties, metallic luster and operability have replaced aluminum foil composite packaging to a certain extent; Because of its high cost performance, it is more and more favored by flexible packaging companies, and has been widely used in the outer packaging of food, health care products, medicine, cosmetics and other products.

[0003] At present, most of the aluminized films are VMPET and VMCPP. This kind of film material is to attach aluminum to the surface of the traditional PET and CPP substrates by a certain pro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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