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Title:
MANUFACTURE OF SHORT FIBER FROM THERMAL PLASTIC POLYMER
Document Type and Number:
Japanese Patent JPS5227829
Kind Code:
A
Abstract:
A homogeneous mixt is prepd. from (i) 30-70 (40-70) pts wt. ethylene-or propylene polymers, consisting of >=80 wt. % polymerised C2H4- or C3H6 units and (ii) 30-70 (30-60) pts. wt styrene polymer, consisting of 90 wt.% polymerised styrene units, provided wt pt sum (i) + (ii) = 100. Mixt. is extruded at 100-300 (120-250) degrees C and outlet velocity 10-300 (20-100) m/min to form flat shaped articles having thickness 0.1-10 mm and cross-sectional area 1-5000(10-500) mm2. Flat-shaped article is longitudinally stretched in ratio 1:2 to 1:40 (1:10 to 1:30) under cooling to 60-150 (90-120) degrees C. Stretched article is cut cross-sectionally into pieces having length 1-5 (2:4) cm. Pieces are broken down to fibres by standard methods, opt in wet or dry devices, e.g in pulp engines. Short fibres obtd. opt mixed with cellulose fibres, are used for paper and cardboard mfr.

Inventors:
HANSU DEIITAA TSUETSUTORAA
GERUHARUTO TSUAITORAA
ROOTAA HEERU
HAINTSU MIYURAA TAMU
FURIIDORITSUHI URUBAN
ERUNSUTO WAINERU
Application Number:
JP10120876A
Publication Date:
March 02, 1977
Filing Date:
August 26, 1976
Export Citation:
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Assignee:
BASF AG
International Classes:
D01D5/26; D01D5/42; (IPC1-7): D01D5/00



 
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