Method of producing a shrinkable product
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United States of America Patent
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Oct 1, 1991
Grant Date -
N/A
app pub date -
Sep 27, 1989
filing date -
Oct 12, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method for the production of a shrinkable product of a thermoplastic raw material by extrusion. The raw material (1) is extruded through a die (3) to form a pipe (18), whereafter the pipe is cut longitudinally in a cutter (7), spread out, and wound on to a reel (19, 17). The production rate is low and rapid cooling is carried out in a calibration gauge (4). When reheated, a bandlike product (9) thereby shrinks vigorously and is welded to the object in question.
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