Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Patent
1998-04-23
1999-10-05
Raimund, Christopher
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
26421112, 19296, B29D 2800
Patent
active
059619040
ABSTRACT:
There is provided a thermally stabilized polypropylene melt-blown microfiber acoustical insulation web which has a resistance to thermal degradation at a temperature of 135.degree. C. for at least 10 days. The polypropylene has a thermal stabilizer uniformly distributed within the melt-blown microfiber polymer which polymer when produced is subject to thermal and/or catalytic degradation in the absence of significant levels of thermal stabilizer or antioxidant.
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Ebbens Ruth A.
Swan Michael D.
Bond William J.
Griswold Gary L.
Minnesota Mining and Manufacturing Co.
Raimund Christopher
Sprague Robert W.
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