Multilayered polymer structure for medical products

Details Multilayered polymer structure for medical products Multilayered polymer structure for medical products

1997-09-22

2000-07-04

Kiliman, Leszek

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 367, 428332, 428343, 4284744, 4284763, 428500, 428515, 428518, B32B 108

Patent

active

060835877

ABSTRACT:
The present invention provides a multiple layer structure for fabricating medical products. The layer structure has a core layer of an ethylene vinyl alcohol copolymer having an ethylene content of about 25-45 mole percent, a solution contact layer of a polyolefin positioned on a first side of the core layer, an outer layer positioned on a second side of the core layer opposite the solution contact layer, the outer layer being selected from the group consisting of polyamides, polyesters and polyolefins; two tie layers--one of each adhered to the first and second sides of the core layer and positioned between the solution contact layer and the core layer and between the outer layer and the core layer, and wherein the structure is produced in a cast coextrusion process.

REFERENCES:
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patent: 4284674 (1981-08-01), Sheptak
patent: 4647483 (1987-03-01), Tse et al.
patent: 4917925 (1990-04-01), Loretti
patent: 5004647 (1991-04-01), Shah
patent: 5164258 (1992-11-01), Shida
patent: 5232754 (1993-08-01), Waugh

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