Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Patent
1996-07-23
1998-11-10
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
264205, 26421112, 4253822, 425464, D01D 511
Patent
active
058339000
ABSTRACT:
This invention relates to a system and process for modifying the resulting properties of a flash spun plexifilamentary film-fibril web and spunbonded nonwoven sheets made from such webs. In particular, the system includes specifically designed letdown chamber arrangements wherein the solution of polymer and spin agent transitions from a single phase solution to a two phase solution in the letdown chamber prior to spinning at the spin orifice. The method comprises altering the configuration of the letdown chamber to alter the properties of the web and the sheet products made therefrom.
REFERENCES:
patent: 3081519 (1963-03-01), Blades et al.
patent: 3169899 (1965-02-01), Steuber
patent: 3227784 (1966-01-01), Blades et al.
patent: 3227794 (1966-01-01), Anderson et al.
patent: 3484899 (1969-12-01), Smith
patent: 3756441 (1973-09-01), Anderson et al.
patent: 3851023 (1974-11-01), Brethauer et al.
patent: 5123983 (1992-06-01), Marshall
patent: 5147586 (1992-09-01), Shin et al.
patent: 5286422 (1994-02-01), Kato et al.
Franke Ralph A.
Lim Hyun S.
Marshall Larry Ray
E. I. Du Pont de Nemours and Company
Tentoni Leo B.
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