Wrap around heat shrinkable article

Details Wrap around heat shrinkable article Wrap around heat shrinkable article

1975-03-21

1976-05-25

Whitby, Edward G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156244, 156258, 156331, 264230, 264342R, 264DIG71, 428 36, B32B 3118

Patent

active

039590526

ABSTRACT:
An article and method for preparing wraparound closures for cables, pipes, splices, and junctions to effect repair, insulation, waterproofing and the like are described. The article is a generally rectangular sheet of a plastic material which has the property of shrinking toward its original dimensions when it is heated after having been stretched at elevated temperature and cooled while in stretched condition. The sheet has a large central section which has been hot stretched and cooled and two small end sections which have not been stretched. The wrap-around closure is made by wrapping the sheet loosely around the object to be enclosed and bringing the two end sections together so that one overlays the other, one or both of the facing surfaces of the end sections is coated with a thin layer of a lower alkyl cyanoacrylate adhesive. The end sections rapidly and strongly adhere to each other. The wrap-around sheet is then heated to a temperature in the range about 250.degree.-375.degree.F. and the central section of the sheet shrinks back toward its pre-stretch dimension tightly engaging the object about which it is wrapped.

REFERENCES:
patent: 3467761 (1969-09-01), Plummer
patent: 3826702 (1974-07-01), Chapman

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