Method of forming a headed thermoplastic tube with a reusable cl

Details Method of forming a headed thermoplastic tube with a reusable cl Method of forming a headed thermoplastic tube with a reusable cl

1998-11-25

2000-10-10

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Utilizing heat releasable stress to reshape solid workpiece

264242, 264249, 264264, 264268, 264296, 264322, 264519, 264911, 264920, 425393, 425403, 425515, 425517, B29C 5700, B29C 6576, B29C 6570, B29C 6108, B29C 4318

Patent

active

061298808

ABSTRACT:
A headed thermoplastic tube having a closure member is formed solely from a thermoplastic extruded, stretched sleeve by positioning the sleeve over a forming mandrel with an exposed portion and heating the exposed portion. The heated exposed portion is shaped into a head in a single step by contacting the exposed portion with a closure means which is later retained on the head after initial contact. The internal cavity of the closure means, which may have threads or grooves formed in the internal cavity, is made of an incompatible material to facilitate the forming of a head in said cavity. The closure means may also have tamper evident features.

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