Extruder with blow head

Details Extruder with blow head Extruder with blow head

1976-05-17

1977-05-03

Spicer, Jr., Robert L.

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

425376B, 425466, 264209, 264312, B29D 2304

Patent

active

040211703

ABSTRACT:
Extruder with blow head comprising a cylindrical body containing at least one rotating screw in coaxial position, a feeding device for the thermoplastic material near one end of the cylinder and a blow head comprising a housing and a mandrel at the other end of the cylinder forming a slit tapering in the direction of flow of the plasticized material and through which said material issues, the screw and the blow head being arranged in one plane, and directly behind the blow head a cooling device for cooling the extruded tube, wherein

REFERENCES:
patent: 3327038 (1967-06-01), Fox
patent: 3331103 (1967-07-01), Fox
patent: 3410933 (1968-11-01), Moseley, Jr.
patent: 3560600 (1971-02-01), Gliniecki
patent: 3944641 (1976-03-01), Lemelson
patent: 3966377 (1976-06-01), Upmeier et al.

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