Apparatus for forming a parison with a view stripe

Details Apparatus for forming a parison with a view stripe Apparatus for forming a parison with a view stripe

1988-09-30

1990-01-02

Chiesa, Richard L.

Plastic article or earthenware shaping or treating: apparatus

Means feeding fluent stock from plural sources to common...

Extrusion shaping means

215 1C, 2642098, 264540, 425462, 425466, 425467, 425532, 428 341, B29C 4722

Patent

active

048909947

ABSTRACT:
Apparatus for blow molding plastic containers with a longitudinal view stripe of a transparent resin in the side wall for visually monitoring the level of the contents of the container. The apparatus includes a plurality of die heads each of which includes a mandrel sleeve having a diverter for directing the flow of a pigmented resin around the mandrel sleeve to form a tubular parison, and for inserting a longitudinal stripe of a clear resin into the pigmented resin. The container mold halves are positioned relative to the parison such that the view stripe is located on the parting line of the mold halves such that the length of the view stripe along the top and bottom walls of the container is controlled.

REFERENCES:
patent: 2808617 (1957-10-01), Terracini et al.
patent: 3417675 (1968-12-01), Ausnit
patent: 4038017 (1977-07-01), Langecker
patent: 4152104 (1979-05-01), Przytulla et al.
patent: 4279851 (1981-07-01), Lord et al.
patent: 4297092 (1981-10-01), Goron
patent: 4789318 (1988-12-01), Ehritt
patent: 4802833 (1989-02-01), Shapler

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