Laminate preform for a multi-layer polyester bottle

Details Laminate preform for a multi-layer polyester bottle Laminate preform for a multi-layer polyester bottle

1986-12-02

1988-05-03

Bueker, Richard R.

Stock material or miscellaneous articles

Hollow or container type article

Cellular material derived from plant or animal source

428213, 428483, 4285428, 215 1C, B65D 2300

Patent

active

047419369

ABSTRACT:
A process for the production of a multi-layer pipe to be used for formation of a bottle by draw-blow-forming, comprising forming by co-extrusion a pipe having inner and outer layers of a polyester composed mainly of ethylene terephthalate units and an intermediate layer of an oxygen-barrier resin interposed between the inner and outer layers, an adhesive resin layer is preferably interposed between every two adjacent layers. The co-extruded multi-layer pipe in the molten state so that the diameter of the pipe is sized is uniform. The process continues by cooling the outer portion of the molten multi-layer pipe by contact with water and simultaneously introducing an inert gas or an inert gas containing a water mist into the interior of the pipe to thereby cool the inner portion of the pipe and prevent oxidation in the pipe A.
Multi-layer pipe prepared according to this process is excellent in the transparency and the draw-formability into a multi-layer drawn bottle.

REFERENCES:
patent: 4398642 (1983-08-01), Okudaira et al.
patent: 4436778 (1984-03-01), Dugal
patent: 4451512 (1984-05-01), Yazaki et al.
patent: 4528219 (1985-07-01), Yamada et al.
patent: 4646925 (1987-03-01), Nohara

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