Method of making a frangible port protector

Details Method of making a frangible port protector Method of making a frangible port protector

1981-10-22

1983-11-15

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624418, 156257, 156293, 215 32, 215 33, 215232, 220266, 220267, 220268, 220269, 220276, 220277, 222107, 604403, 604415, B29D 2304, B32B 3118

Patent

active

044153937

ABSTRACT:
A method of manufacturing a tear-off port protector for a container comprises placing flexible, typically extruded tubing on a mandrel that fills the bore of the tubing, with the tubing preferably outwardly stretched by the mandrel. A cutting blade is spaced a predetermined distance of less than the tubing wall thickness from the mandrel. One then causes the cutting blade to form an annular cut about the tubing, while maintaining the predetermined distance, and thereafter one removes the tubing from the mandrel.

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patent: 3994412 (1976-11-01), Difiglio

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