Apparatus for molding and stretching stoppers

Details Apparatus for molding and stretching stoppers Apparatus for molding and stretching stoppers

1979-10-19

1981-03-10

Lowe, James B.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

249 67, 249119, 249160, 425403, 425443, 425444, 425556, 425588, B29C 100, B29C 1702, B29D 3100, B29F 114

Patent

active

042551110

ABSTRACT:
An apparatus for molding a blank of stoppers from synthetic resin, each of said stoppers including a crossbar, a filament portion and a head. The filament portion has a smaller-diameter portion near the crossbar and a larger-diameter portion extending from the smaller-diameter portion toward the head at least on a portion to be stretched.
Metal mold members adapted to act as a drawing die are engaged to the connecting portion of said smaller-diameter and larger-diameter filament portions, and after the stoppers have been molded, the members forming the die are moved along the filament portion so that only the crossbars are gripped by the metal mold to prevent movement thereby subjecting the filament portions to stretching.

REFERENCES:
patent: 3380122 (1968-04-01), Kirk

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