Plastic molding apparatus

Details Plastic molding apparatus Plastic molding apparatus

1982-08-30

1985-01-29

Thurlow, Jeffery

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to shape parison directly by internal...

Including means to prepare parison

264167, 264177R, 264540, 264541, 4253261, 425380, 425403, 425465, 425467, B29F 304

Patent

active

044963017

ABSTRACT:
A die ring for use in a blow molding apparatus is provided with depressions at the downstream end of the land to provide the parison with a longitudinally thickened rib and depressions at the upstream end of the land to counteract parison deformation caused by the downstream depressions.

REFERENCES:
patent: 3114932 (1963-12-01), Donnelly
patent: 3309443 (1967-03-01), Scott, Jr. et al.
patent: 3981672 (1976-09-01), Wilson
patent: 4045154 (1977-08-01), Ratheiser
patent: 4063865 (1977-12-01), Becker
patent: 4075187 (1978-02-01), Olcott
patent: 4173446 (1979-11-01), Larsen
patent: 4218416 (1980-08-01), Gokcen
patent: 4279857 (1981-07-01), Feuerherm
patent: 4323339 (1982-04-01), de Kok et al.
patent: 4402898 (1983-09-01), Rosenbaum
patent: 4422839 (1983-12-01), Przytulla et al.
"Blow Molding Marlex.RTM.", vol. 4, No. 3, The Shaped Extrusion Die, May-Jun. 1963.
"Blow Molding Marlex.RTM.", vol. 7, No. 1, Shaping the Die Bushing, Jan.-Apr., 1966.
"Blow Molding Marlex.RTM." vol. 7, No. 2, Shaping the Die Bushing-Machining Calculations.
Phillips Chemical Company, Plastic Technical Center Report, SSL-178, "Die Shaping Calculation Procedures," May, 1969.

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