ALKALI-RESISTANT MULTILAYER STRUCTURE Russian patent published in 2023 - IPC B32B7/12 

Abstract RU 2789480 C2

FIELD: material engineering.

SUBSTANCE: present invention relates to a multilayer structure containing a barrier layer that is adhesive sandwiched between the first polymer layer and the second polymer layer. The barrier layer is selected from a group consisting of aluminum foil, a metal oxide layer and a metallized polymer layer, vinylidene chloride (co)polymers, ethylene and vinyl alcohol copolymers, films coated with vinylidene chloride (co)polymer, films coated with ethylene and vinyl alcohol copolymer, hybrid systems containing a mixture of (co)polymer (-s) containing vinyl alcohol and metal oxide(s), hybrid systems containing a mixture of (co)polymer(s) containing vinyl alcohol and inorganic layered mineral(s), and their combinations. The first polymer layer is selected from a group consisting of polyester, polyamide and polyolefin. The second polymer layer is selected from a group consisting of polyolefin, polyacrylonitrile, acrylonitrile/methylacrylate copolymer, cyclic olefin (co)polymer, ionomer and their combinations. At least the adhesive layer between the barrier layer and the second layer contains cross-linked (met)acrylic copolymers. The present invention also relates to packaging made of the specified multilayer film for alkaline fillers.

EFFECT: group of inventions provides an increase in the physical and mechanical properties of products.

15 cl, 2 dwg, 2 tbl

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RU 2 789 480 C2

Authors

Arkaro Alberto

Fessler Tomas

Van Niuvenkhove Andris

Dates

2023-02-03Published

2018-11-07Filed