Plastic article or earthenware shaping or treating: apparatus – Diverse distinct type shaping means
Patent
1974-06-04
1976-03-09
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Diverse distinct type shaping means
425324B, 425326B, 425326R, 425388, 425405R, 425397, B29C 2400
Patent
active
039429334
ABSTRACT:
Apparatus for so-called "in-line" production of hollow articles of thermoplastic material, by blowing or vacuum moulding a sheet strip produced continuously from an extruder and subsequent stamping of the separate articles. The mould tool consists of at least two mould half portions, which is moved along a rectilinear guide and substantially synchronously with the plastic strip. The guide for the mould tool and the direction of the sheet strip extend obliquely downwardly from the extruder nozzle, preferably at an angle to the horizontal plane of 30.degree.-60.degree. . In the zone of the guide path where the mould half portions open, stationary gripping fingers are arranged on both sides of the sheet strip. The fingers are adapted to engage the longitudinal edges of the sheet strip immediately prior to the mould half portions, being separated and to absorb the sheet strip while the mould tool returns for enclosure of a new portion of sheet strip.
REFERENCES:
patent: 2962758 (1960-12-01), Politis
patent: 3105270 (1963-10-01), Fibish
patent: 3166790 (1965-01-01), Keyes
patent: 3271816 (1966-09-01), Schneider
patent: 3359600 (1967-12-01), O'Brien et al.
patent: 3518334 (1970-06-01), Carrigan et al.
patent: 3561057 (1971-02-01), Butzko
Dyno Industrier A/S
Spicer, Jr. Robert L.
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