Gas barrier laminates and packaging bags
By forming a gas barrier laminate consisting of a vapor-deposited layer and a polyolefin layer on a paper substrate, the problems of reduced gas barrier properties and high plastic usage in paper packaging bags during bending are solved, achieving both high gas barrier efficiency and resource conservation.
CN116234702BActive Publication Date: 2026-07-03TOPPAN HOLDINGS INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TOPPAN HOLDINGS INC
- Filing Date
- 2021-09-29
- Publication Date
- 2026-07-03
Smart Images
Figure CN116234702B_ABST
Abstract
The gas barrier laminate of the present invention is a gas barrier laminate comprising a paper substrate and a vapor-deposited layer and capable of being sealed by heat sealing, wherein the area mass of the paper substrate is 30-100 g / m². 2 The water vapor permeability of the gas barrier laminate at 40°C and 90% RH is 3 g / m³. 2 / d or less, folded with the paper substrate as the outer side, rolled once on a 2kg roller, and the water vapor permeability measured at 40°C and 90%RH after opening the crease is 4g / m 2 / d or less, folded with the paper substrate as the inside, rolled once on a 2kg roller, and the water vapor permeability measured at 40°C and 90% RH after opening the crease is 4g / m 2 / d and below.
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