Method for the production of polymer bottles

Details Method for the production of polymer bottles Method for the production of polymer bottles

1995-02-06

1996-06-25

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Including application of internal fluid pressure to hollow...

264458, 264535, 264537, 26432818, B29C 4906, B29C 4964

Patent

active

055297447

ABSTRACT:
Bottle preforms are made by injection moulding a thermoplastic polymer, preferably a polyethylene terephthalate polymer, which contains metal particles, preferably particles of antimony, which are sufficiently fine for them not to be visible to the eye and which intrinsically absorb radiation in the wavelength region 500 nm to 2000 nm. The metal particles are present in an amount such that the reheat time of the polymer is less than the reheat time of the polymer in the absence of the metal particles. The metal particles contained in the polymer are generated in situ by incorporating into the polymer fine particles of a reducible metal compound and a reducing agent capable of reducing the metal compound to the metal and then reacting the metal compound with the reducing agent so as to produce the metal particles. Bottles are made from the bottle preforms by reheating the bottle preforms and then blow moulding bottles from the reheated preforms.

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