Multilayered barrier structures
First Claim
1. A multilayered structure comprising:
- (a) a gas barrier layer having opposing sides, and comprising a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas;
(b) at least one moisture barrier layer comprising a mesophase propylene-based material contacting at least one of the sides of the gas barrier layer; and
(c) a graft layer affixed to at least a portion of the multilayered structure by a dosage of ionizing radiation.
2 Assignments
0 Petitions
Accused Products
Abstract
Multilayered barrier structures comprising a gas barrier layer of a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas and a moisture barrier layer of a mesophase propylene-based material are provided. These structures are environmentally compatible and radiation resistant, and exhibit one or more additional properties, including gas barrier properties, moisture barrier properties, toughness, heat sealability, softness, and quietness during wrinkling. Also provided are methods of preparing and using such multilayered barrier structures, and articles, such as films, pouches, and tubings, formed from these structures, as well as multilayer barrier structures with additional graft layers affixed thereto through the application of a dose of ionizing radiation.
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Citations
22 Claims
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1. A multilayered structure comprising:
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(a) a gas barrier layer having opposing sides, and comprising a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas; (b) at least one moisture barrier layer comprising a mesophase propylene-based material contacting at least one of the sides of the gas barrier layer; and (c) a graft layer affixed to at least a portion of the multilayered structure by a dosage of ionizing radiation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A radiation resistant article formed from a multilayered structure comprising:
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(a) a gas barrier layer having opposing sides, and comprising a non-chlorine containing organic polymer which is substantially impermeable to oxygen gas; (b) at least one moisture barrier layer comprising a mesophase propylene-based material contacting at least one of the sides of the gas barrier layer, wherein the article is quenched immediately after being melt extruded; and (c) a graft layer affixed to at least a portion of the radiation resistant article by a dosage of ionizing radiation. - View Dependent Claims (20, 21, 22)
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Specification