Title:
NONWOVEN FABRIC OF POLYLACTATE-BASED FILAMENT AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3710175
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a new multifunctional polylactate-based filament nonwoven fabric decomposable in natural environment, having a certain flexibility while keeping excellent mechanical strength and exhibiting air-shielding property and water-shielding property.
SOLUTION: This polylactate-based filament nonwoven fabric is produced by using a polylactate-based polymer having a melt flow rate of 1-100g/10min measured in conformity to ASTM D-1238(E) at 190°C, melting the polymer at a temperature between (Tm+15)°C and (Tm+50)°C (Tm is the melting point of the polymer), extruding the molten polymer through a spinneret, thinning down the extruded fiber by drawing with a sucking apparatus at a take-up speed of 1,000-6,000m/min, depositing the fibers on a moving collection face under opening to form a web and heat-bonding one or both surfaces of the web as a whole with a full-face heat-bonding apparatus at ≤(Tm+5)°C under a linear pressure of a roll of ≥0.01kg/cm.
Inventors:
Koichi Nagaoka
Fumio Matsuoka
Naoji Ichinose
Fumio Matsuoka
Naoji Ichinose
Application Number:
JP25608095A
Publication Date:
October 26, 2005
Filing Date:
October 03, 1995
Export Citation:
Assignee:
UNITIKA LTD.
International Classes:
D01F6/84; D04H3/00; D04H3/011; D04H3/16; D04H5/00; (IPC1-7): D04H3/16; D04H3/00
Domestic Patent References:
| JP7048769A | ||||
| JP7133511A | ||||
| JP7126970A | ||||
| JP7034369A | ||||
| JP6128859A | ||||
| JP6207324A | ||||
| JP60194160A |
Attorney, Agent or Firm:
Takao Itagaki
Yoshihiro Morimoto
Toshiji Sasahara
Yohei Harada
Yoshihiro Morimoto
Toshiji Sasahara
Yohei Harada