POLYESTER BINDER FIBER FOR PAPERMAKING

WIPO Patent Application WO/2003/042454

A1

A polyester binder fiber for paper making, which has an intrinsic viscosity of 0.35 to 0.49 and a single fiber fineness of 1.5 dtex or less, and exhibits an sheet area shrinkage percentage of 70 % or less, the shrinkage percentage being represented by the following formula: sheet area shrinkage percentage (%) = &lcub (A₀−A₁)&sol A₀&rcub X 100 wherein A₀ is the area of a sheet before shrinking treatment, A₁ is the area of the sheet after shrinking treatment, the sheet is prepared by agitating and mixing 80 wt % of polyester binder fibers cut into pieces having a length of 5 mm and 20 wt % of NBK in water, to disperse them in water, and making a sheet having a size of ca. 25 cm × ca. 25 cm and a grammage of about 50 g&sol m², and the shrinking treatment is carried out in a manner wherein the sheet is dried for a day or more at room temperature, and then is placed on a perforated Teflon sheet and subjected to relaxation shrinkage in a hot circulating dryer at 140&ring C for 5 min.

JP2002054036	CRIMPED POLYESTER FIBER AND METHOD FOR PRODUCING THE SAME
JPS5349124	FIREERETARDANT LINEAR THERMAL PLASTIC POLYESTER FIBER AND FILAMENT
JPH0434008	PRODUCTION OF COMBINED FILAMENT YARN HAVING MULTIPLE SHRINKAGE DIFFERENCE

YAMAMOTO TAMIO (JP)
YAMAMOTO NOBUYUKI (JP)

PCT/JP2002/011786

May 22, 2003

November 12, 2002

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TEIJIN LTD (JP)
YAMAMOTO TAMIO (JP)
YAMAMOTO NOBUYUKI (JP)

D01F6/62; D21H13/24; (IPC1-7): D21H13/24; D01F6/62

EP0117937A1	1984-09-12
EP0043555A1	1982-01-13
JPH01104823A	1989-04-21

Mihara, Hideko c/o Teijin Intellectual Property Center Limited (1-1 Uchisaiwaicho 2-chom, Chiyoda-ku Tokyo, JP)

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