Melt-phase thermal pressure forming of plastic blanks into...

Details Melt-phase thermal pressure forming of plastic blanks into... Melt-phase thermal pressure forming of plastic blanks into...

B - Operations, Transporting

29

C

18/1077

B29C 51/24 (2006.01) B29C 31/00 (2006.01) B29C 51/42 (2006.01)

Patent

CA 1322090

19 ABSTRACT OF THE DISCLOSURE An apparatus for the thermal pressure forming of plastic blanks into containers includes several elements. A heater brings the plastic blanks to a melt phase by heating them to a melting temperature sufficient to relieve internal stresses therein. A conveying arrangement takes the plastic blanks through the heater. This conveying arrangement includes a device for preventing the plastic blanks from reaching the melting point only along their outer peripheral edges so that the plastic blanks maintain dimensional stability. Thereafter, a press forms the plastic blanks into containers.

559993

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