Plastics extrusion die head improvement

B - Operations – Transporting – 29 – C

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18/741

B29C 47/92 (2006.01) B29C 47/22 (2006.01) B29C 47/28 (2006.01) B29C 47/86 (2006.01)

Patent

CA 1068061

PLASTICS EXTRUSION DIE HEAD IMPROVEMENT Abstract of the Disclosure An improved plastic extrusion blow molding die head is described which permits the formation of extruded precision parisons having controlled wall thickness by partial restric- tion of the entering flow of the molten plastic material into the die head, and the improvement of including individual temperature control zones running parallel to the direction of plastic flow in the die.

254433

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