Apparatus for forming a parison with a view stripe

• Main Authors: SHAPLER; THOMAS A, HIRSCHBERGER; MICHAEL, BUEHLER; THOMAS R
• Format: Patent
• Language: English
• Published: 02.01.1990
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

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.