Method of continuous extrusion molding

Details Method of continuous extrusion molding Method of continuous extrusion molding

1979-09-07

1984-07-24

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

264161, 264163, 264166, 264167, 2642101, 2642888, 2642971, B29D 710, B29F 3012

Patent

active

044617380

ABSTRACT:
Continuous molding of objects using a rotatable molding wheel with peripheral orifices in accordance with the objects to be molded. Plastic is extruded upon the periphery of the wheel and a knife in substantially eliptical contact is used to skive film from the objects being molded. Following molding, selected portions of the objects can be selectively distended. Suitable distention can be achieved using diverging sprocket wheels. When the continuously molded objects are fasteners with filament-like portions, the diverging sprocket wheels can be used to stretch the filamentary portions and reorient their molecules.

REFERENCES:
patent: 2922193 (1960-01-01), Bonfiglio
patent: 3196196 (1965-07-01), Burbank
patent: 3509005 (1970-04-01), Hartig
patent: 3515778 (1970-06-01), Fields et al.
patent: 3608035 (1971-09-01), Frohlich
patent: 3825643 (1974-07-01), Hillier et al.
patent: 3875648 (1975-04-01), Bone
patent: 4159300 (1979-06-01), Wise
patent: 4176149 (1979-11-01), Moertel

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