Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – With subsequent uniting of the particles
Patent
1989-01-03
1990-06-26
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
With subsequent uniting of the particles
264 8, 264 12, 264115, 425 7, 425 8, B05B 308, B05D 112
Patent
active
049370200
ABSTRACT:
The polymer granular melt (1) is whirled out of a rotating nozzle head (6) through a plurality of exit holes (24) with fibre formation (32) and the fibres formed (9) are deposited on a collecting surface (12) in web form (15). This polymer melt is introduced into the nozzle head (6) under a preliminary pressure of 1 bar to 200 bar, preferably 1 bar to 50 bar. Furthermore, the fibres (32) are deflected by a high-speed gas stream (7, 8) in a radial direction at a radial distance of 10 mm to 200 mm from the exit holes (24) and, in the course of being deflected, are simultaneously drawn and stretched. The melt streams (32) exiting from the exit holes (24) can be additionally drawn by gas streams (26, 34) exiting in the vicinity of the exit holes (24) at the nozzle head (6) with a predominantly radial component before coming under the influence of the axial deflecting gas stream (7, 8).
REFERENCES:
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patent: 3928009 (1975-12-01), Perry
patent: 4058386 (1977-11-01), Faulkner et al.
patent: 4237081 (1980-12-01), Murphy et al.
patent: 4246017 (1981-01-01), Phillips
patent: 4277436 (1981-07-01), Shah et al.
Berkenhaus Dirk
Nyssen Peter R.
van Pey Hans-Theo
Wagner Wolfram
Bayer Aktiengesellschaft
Fertig Mary Lynn
Silbaugh Jan H.
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