Stock material or miscellaneous articles – Sheet including cover or casing – Foamed or expanded material encased
Patent
1997-06-13
1999-05-18
Copenheaver, Blaine R.
Stock material or miscellaneous articles
Sheet including cover or casing
Foamed or expanded material encased
428 76, 4283186, 4283193, 4283197, 4283199, B32B3/04;3/12
Patent
active
059049707
ABSTRACT:
By employing a unique manufacturing process, unique manufacturing equipment, or a unique combination of materials, a fully integrated, multilayer foamed thermoplastic or elastomeric member or profile having a core member peripherally surrounded by an outer protective layer is attained which is virtually incapable of being removed from said core member. By effectively melting the adjacent surfaces of the foamed layers being interengaged, a core member having any desired cross-sectional shape is produced and is peripherally surrounded with an outer layer integrally bonded thereto. In one aspect of the present invention, metallocene catalyzed plastic material is employed in forming the core member to impart desirable physical attributes thereto. In an alternate aspect of the present invention, a manufacturing method or processing equipment are employed for assuring the integral bonded engagement of the outer protective layer to the core member, on a mass produced basis, which assures secure, affixed, bonded interengagement of the protective layer to the core member.
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Allman Michael W.
Lauer Eduardo
Laughner Michael P.
Copenheaver Blaine R.
Nomaco Inc.
Stoltz Melvin I.
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