Method for manufacturing plastics blanks

Details Method for manufacturing plastics blanks Method for manufacturing plastics blanks

1975-11-14

1978-01-31

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264 97, 264334, B29F 106, B29F 114

Patent

active

040715329

ABSTRACT:
Method for manufacturing blanks from a synthetic plastics material includes mould cavity defined between a mandrel and an outer mould. A retractable sleeve is slidably mounted on the mandrel and is displaceable within the cavity at a rate which depends on the rate at which the plastics material is injected into the cavity.

REFERENCES:
patent: 3347965 (1967-10-01), Valyi
patent: 3503095 (1970-03-01), Uhlig
patent: 3590114 (1971-06-01), Uhlig
patent: 3776991 (1973-12-01), Marcus
patent: 3778211 (1973-12-01), Moen et al.
patent: 3855380 (1974-12-01), Gordon et al.

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