Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1985-03-15
1986-03-25
Cannon, James C.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
28112, 156167, 156181, 156296, 428296, 428297, 428395, D04H 310, D04H 314, D04H 316
Patent
active
045783071
ABSTRACT:
Disclosed is a nonwoven sheet consisting of undrawn polyethylene terephthalate filaments of which an outer layer portion of a filament section has a higher orientation and higher crystallization than a center of the filament section, and nonwoven sheets produced by using the above-mentioned nonwoven sheet as an intermediate goods.
The above-mentioned undrawn polyethylene terephthalate filament are those in which the filaments have an elongation at breakage of at least 100%, a shrinkage in boiling water of at least 15%, the filament section is a circular section having a radius R, and the average refractive index n.parallel.(0) of the central portion of the filament section and the average refractive index n.parallel.(0.8) of the portion apart by 0.8 R from the center satisfy the following requirements:
REFERENCES:
patent: 3949130 (1976-04-01), Sabee et al.
patent: 4210690 (1980-07-01), Hartman et al.
patent: 4434204 (1984-02-01), Hartman et al.
Iwasaki Hirofumi
Niki Akira
Asahi Kasei Kogyo Kabushiki Kaisha
Cannon James C.
LandOfFree
Nonwoven sheet having improved heat deterioration resistance and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Nonwoven sheet having improved heat deterioration resistance and, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonwoven sheet having improved heat deterioration resistance and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-630323