Blow forming apparatus for producing double-walled vessels

Details Blow forming apparatus for producing double-walled vessels Blow forming apparatus for producing double-walled vessels

1974-04-29

1976-01-13

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Preform assembly means and means for bonding of plural...

Reshaping means utilizing fluid pressure directly contacting...

425DIG234, B29D 2303

Patent

active

039321045

ABSTRACT:
Apparatus is disclosed herein for blow forming a double-walled container or body using either injection or extrusion molding techniques. A mold is provided having a movable sleeve which separates and defines a pair of coaxial wall cavities in parallel relation for receiving a parison during injection molding. A mold is further provided for movably positioning its halves about a pair of coaxial cylindrical parisons so as to close the opposite ends of a predetermined length, this latter procedure being an extrusion molding technique.

REFERENCES:
patent: 3023461 (1962-03-01), Sherman
patent: 3809517 (1974-05-01), Schneider

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