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AssigneeDyno Industrier A/S
InventorJohan per Greijner Svendsen
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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.
An in-line apparatus for the production of hollow articles, such as bowls, trays, cups and similar articles of thermoplastic material by fluid pressure differential molding a continuous sheet of the thermoplastic material comprising:
Dependencies are inferred from the claim text.