Stock material or miscellaneous articles – Sheet including cover or casing
Patent
1989-05-31
1990-12-25
Robinson, Ellis P.
Stock material or miscellaneous articles
Sheet including cover or casing
428 71, 428 74, 428 76, 428 73, 428913, 428 349, 428 351, 428 37, 428212, 428218, 428138, 264342R, B32B 104, B32B 302
Patent
active
049802143
ABSTRACT:
The composite product consists of a central body is formed of a substance or a material having poor mechanical properties and is in the form of a beam or wedge having a large thickness with respect to width, said central body being is covered, at least over its length by a film or a sheath made of a heat shrinkable plastic shrunk by any suitable heating means after being placed in position around said central body said sheath surrounding the central body is produced by winding thin strips of at least one shrinkable film strip with the adjacent edges of the overlapping strips. The wrapped film can be heat shrunk and the adjacent edge thermally welded by the same heat treatment. The composite and the product can be utilized to produce casing elements for concrete or wedging blocks.
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Jacobs Marvin E.
Robinson Ellis P.
Watkins William P.
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