Improved method for transfer of molding material in two stage in

Details Improved method for transfer of molding material in two stage in Improved method for transfer of molding material in two stage in

1992-06-15

1994-01-25

Heitbrink, Jill L.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Forming plural articles

26432819, 425207, 425557, 366 77, B29C 4554

Patent

active

052813843

ABSTRACT:
An improved method for injection molding including the steps of plasticizing a shot of molding material with the extruder running at a high rpm, transferring the shot to an accumulator means with the extruder running at a low rpm, and injecting the shot into a mold cavity.

REFERENCES:
patent: 3117348 (1964-01-01), Rees
patent: 3192299 (1965-06-01), Hendry
patent: 4290701 (1981-09-01), Schad
patent: 4944906 (1990-07-01), Colby et al.

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