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US 11,110,687 B2Granted
Aluminium barrier laminate and barrier liner at shoulder for container
AssigneeKimpai Lamitube Co., Ltd.
InventorSumet Limatibul
Life of this patent
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Abstract
A laminate sheet, particularly an aluminium-based laminate comprises polyethylene having a density of 0.90-0.96 g/cc, a polyethylene-based film having a melting temperature of less than 240° C.; low density polyethylene in order to provide high adhesion; an aluminium barrier film, and a polyethylene-based film having a sealing property. Furthermore, the laminate sheet may further comprise a blown film or a dry laminate for making a tube and a tube shoulder in order to prevent flavor loss of the products packaged therein and without stress crack.
Claims13
A laminate comprising:
- a first layer having a polyethylene-based film with a density of 0.90-0.96 g/cc;
- a second layer having a linear low density polyethylene-based film with a melting temperature of less than 240° C.;
- a third layer having low density polyethylene in order to provide high adhesion;
- a fourth layer adjacent to the third layer having an aluminum barrier film with a thickness of 7-20 microns;
- a fifth layer adjacent to the fourth layer having low density polyethylene that provides in order to provide high interlayer adhesion;
- a sixth layer having a linear low density polyethylene-based film with a melting temperature of less than 240° C.;
- and
- a seventh layer having a polyethylene-based film with a sealing property,
- wherein the seventh layer is a 5-layer blown film comprising a resin with barrier properties, wherein the resin with barrier properties comprises EVOH, wherein the seventh layer is the innermost layer in the laminate.
6 more elements
Dependencies are inferred from the claim text.