APPARATUS FOR PRODUCING SHELLS, TROUGHS, BUCKETS AND SIMILAR HOLLOW BODIES MADE OF THERMOPLASTIC SYNTHETIC MATERIAL

Appts. for prodn. of hollow articles, e.g., cups, dishes and bowls, from thermoplastic matl., e.g. PVC, polyethylene and polypropylene, by vacuum forming or blow moulding continuously extruded sheet has a moulding tool that consists of >=2 parts and moves along a straight guide in synchronisation...

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Bibliographische Detailangaben
1. Verfasser:	SVENDSEN,JOHAN P.G.,NO
Format:	Patent
Sprache:	eng ; hun
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Appts. for prodn. of hollow articles, e.g., cups, dishes and bowls, from thermoplastic matl., e.g. PVC, polyethylene and polypropylene, by vacuum forming or blow moulding continuously extruded sheet has a moulding tool that consists of >=2 parts and moves along a straight guide in synchronisation with the sheet, the guide and the sheet sloping downwards from the extruder orifice, pref. at an angle of 30-60 degrees to a horizontal plane. Stationary gripping fingers are arranged on both sides of the sheet, in the zone of the guide path where the mould parts are opened, for gripping the edges of the sheet immediately before the mould parts are sepd., and for lifting the sheet while the moulding tool withdraws to enclose a new part of the sheet. The appts. is cheaply produced, occupies little space and has high output. Enables high quality hollow articles to be produced from thermoplastic matl. that are difficult to process, e.g., polypropylene.