David A Hawes

Author:

David S. Hawes

ISBN #:

0253106117

Author:

David S. Hawes

ISBN #:

0253210070

US Patent:

6346332, Feb 12, 2002

Filed:

Jul 19, 2000

Appl. No.:

09/619678

Inventors:

Kenneth John Bryden - Ellicott City MD
David Hillis Hawes - Clifton Forge VA
Ralph Scott Peterson - Clifton Forge VA

Assignee:

Westvaco Corporation - Stamford CT

International Classification:

B32B 2700

US Classification:

4284744, 428 341, 428 342, 428 346, 428 347, 4284111, 4284758, 4284761, 4284796, 428511, 428513, 156 82, 156324, 156497, 2641761

Abstract:

This invention relates to a laminate substrate. An exemplary embodiment comprises a paperboard layer with a heat sealable layer secured substantially adjacent to one side of the paperboard layer. A co-extruded layer is secured substantially adjacent to the other side of the paperboard layer. The co-extruded layer has five layers: a heat sealable layer secured to the paperboard layer, a first tie layer secured adjacent to the heat sealable layer, a semi-crystalline nylon layer secured adjacent to the first tie layer, a second tie layer secured adjacent to the semi-crystalline nylon layer, and a heat sealable layer secured adjacent to the second tie layer. A fourth heat sealable layer is secured adjacent to the co-extruded layer.