Blow molding device having a blow mandrel with a seal forming ri

Details Blow molding device having a blow mandrel with a seal forming ri Blow molding device having a blow mandrel with a seal forming ri

1974-05-09

1976-03-02

Shore, Ronald J.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Cutter guided by or cooperating with peripheral edge of...

425DIG212, B29D 2303

Patent

active

039415414

ABSTRACT:
A blow mandrel for the production of hollow bodies in a hollow blow mold, particular for the production of filled bottles sealed ready for shipment, from a length of tubing of a thermoplastic resin, having an axially displaceable blow pipe adapted to be surrounded by an edge of the mold opening. The blow mandrel comprises the aforementioned blow pipe and, at its mouth section, a sealing ring protruding outwardly beyond the circumferential surface of the blow pipe and extending in closed form in the circumferential direction of the pipe upon blowing in the region of the edge of the opening of the blow mold. The sealing ring has, on its side turned toward the mold cavity, an annular groove open in the direction of the blow-mold cavity.

REFERENCES:
patent: 3209401 (1965-10-01), Mehnert
patent: 3224038 (1965-12-01), Budesheim
patent: 3585683 (1971-06-01), Wilson
patent: 3819317 (1974-06-01), Higginbotham
patent: 3827214 (1974-08-01), Naumann

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