Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By mechanically introducing gas into material
Patent
1979-11-05
1981-09-15
Bell, James J.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By mechanically introducing gas into material
264 53, 264211, 264DIG5, B29D 2700
Patent
active
042897181
ABSTRACT:
A mat material suitable for use for reinforcing plastics, as an upholstery material, filter material and various other purposes is made by melt spinning a synthetic polymeric material onto a moving embossed surface where the filaments become melt fused together at mutual points of contact. A gas or gas producing substance is mixed with the melt prior to extrusion to produce a plurality of adjacent, separate, discontinuous cavities in the filament.
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Ostertag Karl
Vollbrecht Balf
Akzona Incorporated
Bell James J.
Hall Jack H.
Young Francis W.
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