Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Rod or tubular preform
Patent
1982-12-23
1985-05-21
Silbaugh, Jan
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Rod or tubular preform
264521, 264532, 264533, 264291, 425525, 425526, 425529, 425384, 425392, B29C 1702, B29C 1707
Patent
active
045183406
ABSTRACT:
Apparatus for producing a tubular premoulding of a thermoplastic material, suitable for subsequent shaping to form containers by a rolling process. The material in a part of a tube is axially oriented as a result of reducing the wall thickness by applying an external pressure which causes the material to flow. The oriented material is moulded by a blow-moulding process into future mouth parts and parts of adjacent neck sections, preferably from two blank parts, joined to one another, of pre-mouldings, the blank parts in the transition between the two mouth parts being severed in order to form two separate blank parts, so that, after closing one end and, if necessary, reworking in order to obtain the requisite closing faces at the other end, the two blank parts each form a tubular pre-moulding.
REFERENCES:
patent: 3205289 (1965-09-01), Carpenter
patent: 4108937 (1978-08-01), Martineu et al.
patent: 4297306 (1981-10-01), Yoshino et al.
patent: 4397808 (1983-08-01), Yoshino et al.
Jakobsen Kjell M.
Nilsson Claes T.
PLM Aktiebolag
Silbaugh Jan
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