Process of making multifilament yarn, monofilament or film of po

Details Process of making multifilament yarn, monofilament or film of po Process of making multifilament yarn, monofilament or film of po

1995-06-07

1997-04-08

Tentoni, Leo B.

Plastic and nonmetallic article shaping or treating: processes

With twining, plying, braiding, or textile fabric formation

2642101, 2642108, 26421112, 26421113, 26421114, D01D 5088, D01F 662

Patent

active

056184808

ABSTRACT:
Multifilament yarn, monofilament, or film, formed at least substantially of polyethylene naphthalate, has a strength of at least 400 MN/tex and a DSC melting point of at least 292.degree. C., where the DSC melting point is measured on a sample quantity of 2.5 mg at a heating rate of 20.degree. C. per min. For production, melted polyethylene naphthalate is extruded from a multi-hole spinneret, the filaments or film, solidified by cooling, are/is withdrawn at a rate of 500 to 10,000 m/min, where the filaments or film are/is subjected to a draw-down B of 40 to 25,000 from the spinneret output to the first withdrawal element. The polymer used may contain at least 85% by weight polyethylene naphthalate and have a melt flow index of 3 to 26.

REFERENCES:
patent: 3616832 (1971-11-01), Shima et al.
patent: 3929180 (1975-12-01), Kawase et al.
patent: 4000239 (1976-12-01), Hamana et al.
patent: 4001479 (1977-01-01), Hamana et al.
patent: 4026973 (1977-05-01), Shima et al.
patent: 4725472 (1988-02-01), Okabe et al.
patent: 5217762 (1993-06-01), Frank
Wulfhorst, Burkhard; Olbrich, Andreas; "Ein neu entwickeltes Gerat fur die Zugprufung von Garnen mit hohen Verformungsgeschwindigkeiten"; Textil Praxis International, Apr. 1993, pp. 281-284.
Winkler, Friedrich; u.a.: "Dichtebestimmung an Faserstoffen"; Faserforschung und Textiltechnik 18, 1967, pp. 529-533.
Derwent Abstract 88-336128/47 (Sep. 20, 1988).
Derwent Abstract 88-336131/47 (Sep. 20, 1988).
Abstract of Japan 4-352, 811 (Published Dec. 7, 1992).

Affiliated with

Also associated with

Rating

Process of making multifilament yarn, monofilament or film of po does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process of making multifilament yarn, monofilament or film of po, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process of making multifilament yarn, monofilament or film of po will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2396146