Method of manufacturing a nesting or interlocking loose-fill cel

Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making

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Details

264 53, 264142, 428315, 428402, B29D 2700, B29C 1710

Patent

active

039610004

ABSTRACT:
The invention relates to a method for producing loose-fill packing material in the form of hollow, substantially hemispherical bodies made from an extrudable, expandable synthetic plastic composition.

REFERENCES:
patent: 2576977 (1951-12-01), Stober
patent: 2918701 (1959-12-01), Hull et al.
patent: 3033806 (1962-05-01), Spencer
patent: 3066382 (1962-12-01), Zweigle et al.
patent: 3372215 (1968-03-01), Muirhead et al.
patent: 3400037 (1968-09-01), Sare et al.
patent: 3436449 (1969-04-01), Treu et al.
patent: R272243 (1971-12-01), Sare et al.

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