Method for producing plastic cartridge for sealants

Details Method for producing plastic cartridge for sealants Method for producing plastic cartridge for sealants

1986-11-24

1989-03-28

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264219, 264540, B29C 4904

Patent

active

048162043

ABSTRACT:
Plastic cartridge for packaging sealants is made by blow molding an extruded parison into a metal mold with a cavity whose interior diameter gradually increases toward the bottom in correspondence with the variation in thickness between the top and bottom of the parison, which variation in thickness results from longitudinal stretching of the extruded parison under its own weight. A plastic cartridge having equal inside top and bottom diameters is produced.

REFERENCES:
patent: 4176413 (1979-12-01), Whitney et al.
patent: 4246227 (1981-01-01), Crosby et al.

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