Apparatus for the manufacture of hollow bodies from a thermoplas

Details Apparatus for the manufacture of hollow bodies from a thermoplas Apparatus for the manufacture of hollow bodies from a thermoplas

1980-01-22

1982-07-06

Silbaugh, Jan H.

Plastic article or earthenware shaping or treating: apparatus

Control means responsive to or actuated by means sensing or...

Control means responsive to product weight or dimension

425145, 425147, 425532, 425466, 264 401, 264 402, 264 404, 264 407, B29C 1707

Patent

active

043380719

ABSTRACT:
Blow-moulding apparatus for the manufacture of hollow bodies from a thermoplastic in which a screw extruder extrudes the thermoplastic into an accumulating chamber, and a piston forces the thermoplastic through a gap-like outlet orifice of the accumulator chamber to form a parison. A blow-mould consisting of at least two parts which can be opened is positioned so that the blow-mould encompasses the parison. Control means are provided for adjusting the width of the gap-like outlet orifice of the accummulator chamber as a function of the length of the parison extruded, which length can be detected e.g. by a light beam and a photo-cell.

REFERENCES:
patent: 3712772 (1973-01-01), Hunkar
patent: 3759648 (1973-09-01), Hunkar
patent: 3865528 (1975-02-01), Roess
patent: 3985490 (1976-10-01), Kader

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