Stock material or miscellaneous articles – Structurally defined web or sheet – Nonplanar uniform thickness material
Patent
1989-12-22
1991-05-28
Robinson, Ellis P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Nonplanar uniform thickness material
428 67, 428 68, 428292, 428294, 428370, 428374, 428107, 4284755, 428213, 428220, 428215, 4284744, 428524, 428522, 4284763, 4284774, 428525, 4284752, 428412, 428515, 428518, 428516, 428520, 2641772, 2641710, B32B 502, B32B 312, B32B 2702, B32B 2704
Patent
active
050194399
ABSTRACT:
A composite, thermoplastic resin film comprises a matrix in the form of a film and formed of a first thermoplastic resin, and a plurality of substantially continuous tapes dispersed within the matrix film with the plane of each of the tapes being substantially parallel with the plane of the matrix film and each formed of a second thermoplastic resin different from the first resin, a portion of the tapes having a width of at least 200 times the thickness of the composite film so that the composite film has an oxygen permeation rate of 0.12-900 cc/m.sup.2.day.atm at a temperature of 20.degree. C. and a relative humidity of 65%. The thermoplastic resin film may be obtained by mixing melts of the first and second resins using a static mixer, and extruding the mixed melt through a die. The film has an excellent gas barrier property and is suitably used for the preparation of cushioning materials.
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JSP Corporation
Robinson Ellis P.
Watkins III William P.
Yee Stephen F. K.
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