Method to produce shirnkable, thermoplastic bottle capsules

Details Method to produce shirnkable, thermoplastic bottle capsules Method to produce shirnkable, thermoplastic bottle capsules

1990-06-27

1992-06-02

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Labeling or embossing indicia

264230, 264515, 264527, 264543, B29C 4904, B29C 4936

Patent

active

051184605

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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