Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1980-01-21
1982-07-06
Hoag, Willard E.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264263, 264267, 264273, 264274, 264DIG41, B29D 300, B29D 2308, B29F 100
Patent
active
043382789
ABSTRACT:
Method for making 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.
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Hoag Willard E.
Miller Alfred E.
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