Collapsible dispensing tube having an anchored barrier member

Details Collapsible dispensing tube having an anchored barrier member Collapsible dispensing tube having an anchored barrier member

1977-07-08

1980-01-29

Spar, Robert J.

Dispensing

Collapsible wall-type container

Nonmetallic

113 1B, 113120D, B65D 3510

Patent

active

041857577

ABSTRACT:
A collapsible dispensing tube in which plastic fabricating materials other than conventional materials can be selected which are more suitable, since the pressure in the process is increased while the temperature is decreased. This manufacturing method utilizes a locking taper resulting in a better bond between the headpiece, barrier member, and the inner wall of the collapsible tube and substantially eliminating blowby of plastic material into said collapsible tube. The barrier member extends to and is tightly engaged with the adjacent inner wall of the collapsible tube and substantially eliminates bypass of gases around the barrier member. The method of manufacture permits the selection of the most suitable thermoplastic material for the intended use from a group of materials.

REFERENCES:
patent: 3186601 (1965-06-01), Marchak
patent: 3295725 (1967-01-01), Brandt
patent: 3565293 (1971-02-01), Schultz
patent: 4011968 (1977-03-01), McGhie et al.

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