Melt blow die

Details Melt blow die Melt blow die

1987-10-21

1989-05-02

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Projection

264 12, 425 7, B29C 4778

Patent

active

048264156

ABSTRACT:
A melt blow die for use in a melt spinning apparatus includes a die block assembly having a chamber for receiving melt of a thermoplastic resin, at least one array of a plurality of capillary tubes arranged in a plane and having one ends held by the die block assembly, the capillary tube communicating with the chamber in the die block assembly, and gas plates connected to the die block assembly and defining therebetween gas chambers. The gas plates has lips which cooperate with each other to define a slit communicating with the gas chambers and to clamp the other ends of the array of capillary tubes in such a manner that gas orifices are formed between the peripheral surfaces of the capillary tubes and the adjacent surfaces of the lips. A gas introduced into the gas chambers is blown through the gas orifices to draw the melt of the thermoplastic resin extruded through the capillary tubes. The array of capillary tubes may be constructed as a unit which is detachably secured to the die block assembly.

REFERENCES:
patent: 3825379 (1974-07-01), Lohkamp

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