Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1974-12-09
1978-02-14
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 12, B29C 1706
Patent
active
040738507
ABSTRACT:
An extrusion head is provided in which molten polymeric material is formed into fibres by providing individual air streams for each orifice of a plurality of extrusion orifices formed in a straight line across the width of the head to draw out and convey individual polymeric material fibres from polymeric material extruded from each orifice, the individual fibres being separated from each other by the individual air streams to prevent coalescing of the fibres to form bundles while they are still molten. Each orifice is formed at the line of intersection of two sloping surfaces of a unitary wedge shaped body and preferably has a circular cross section in the elevational view and a part-elliptical cross section in the plan view to allow metering of the extruded molten material into the air streams over a flow path immediately upstream of the line of intersection.
REFERENCES:
patent: 2411660 (1946-11-01), Manning
patent: 2437263 (1948-03-01), Manning
patent: 2508462 (1950-05-01), Marshall
patent: 2571457 (1951-10-01), Ladisch
patent: 3015127 (1962-01-01), Stalego
patent: 3017664 (1962-01-01), Ladisch
patent: 3093315 (1963-06-01), Tachiki et al.
patent: 3379811 (1968-04-01), Hartmann et al.
patent: 3436792 (1969-04-01), Hench
patent: 3825379 (1974-07-01), Lohkamp et al.
patent: 3885014 (1975-05-01), Fukada et al.
patent: 3888610 (1975-06-01), Brackmann et al.
patent: 3911173 (1975-10-01), Sprague
patent: 3937772 (1976-02-01), Urban et al.
patent: 3942723 (1976-03-01), Langdon
patent: 3959421 (1976-05-01), Weber et al.
patent: 3981650 (1976-09-01), Page
Brackmann Warren A.
DiIanni Daniel
Rothmans of Pall Mall Canada Limited
Woo Jay H.
LandOfFree
Method of producing polymeric material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing polymeric material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing polymeric material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-524412