Deckle structure for a film extrusion die

Details Deckle structure for a film extrusion die Deckle structure for a film extrusion die

1985-12-09

1987-04-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

264177R, 2641771, 425466, B29C 4716

Patent

active

046593020

ABSTRACT:
A T-shaped extrusion die for extruding films ofthermally flowable synthetic resin, comprising a manifold, a slot-like passage, lips, inner deckles for varying the edge thickness and width of the resulting extruded film and inner deckle rods for regulating the width thereof, the extrusion die characterized in that the inner deckles are each divided into upper and lower inner deckle portions for conveniently varying the width of the resulting extruded film and the inner rods are each provided at its tip with a tongue shaped protrusion for regulating the width of the resulting extruded film without forming edge beads at both edges thereof.

REFERENCES:
patent: 3018515 (1962-01-01), Sneddon
patent: 3706518 (1972-12-01), Bunte et al.
patent: 3829274 (1974-08-01), Melead
patent: 3832120 (1974-08-01), Shaffer
patent: 4248579 (1981-02-01), Maejima
patent: 4533510 (1985-08-01), Nissel

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