Condensation injection molding process for producing bottle...

Details Condensation injection molding process for producing bottle... Condensation injection molding process for producing bottle...

B - Operations, Transporting

29

B

B29B 13/00 (2006.01) B29B 11/08 (2006.01) B29C 45/00 (2006.01) C08G 63/88 (2006.01)

Patent

CA 2169612

The invention relates to a process for producing bottle preforms from the melt of poly-ethylene terephthalate and/or its copolyesters, wherein an inert gas is optionally introduced into the continuous flow or partial flow of the polyester melt from a poly-condensation having an intrinsic viscosity between 0.5 and 0.75 dl/g, subsequently the melt is brought to an acetaldehyde content below 10 ppm in a melt post-condensation reactor and to an intrinsic viscosity of 0.75 to 0.95 dl/g and thereafter guided into an injection molding tool and proces-sed into preforms.

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