Method to produce shirnkable, thermoplastic bottle capsules
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United States of America Patent
Stats
-
Jun 2, 1992
Grant Date -
N/A
app pub date -
Jun 27, 1990
filing date -
Jun 30, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Bottle capsules (1), shrinkable onto a bottle neck, are produced by blow molding. An extruded plastic tube (2), in a thermoelastic state, is introduced into dual molds (3a) tangentially, in vertical motion from top to bottom. Each dual mold (3a) has a constriction (7) which is penetrated by a movably mounted injector (8), for introduction of a blow molding medium. The plastic tube (2) is expanded substantially radially only, and the most severe expansion occurs in the area around the constriction. The molds (3a) are mounted in a turntable (4) driven continuously about a horizontal shaft.
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