Title:
MELT-BLOWN NONWOVEN FABRIC COMPRISING ULTRA-FINE FIBERS, PRODUCTION METHOD THEREFOR, AND DEVICE FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2012/102398
Kind Code:
A1
Abstract:
An ultra-fine fiber melt-blown nonwoven fabric having excellent fine-particle trapping characteristics and air permeability is obtained by a melt-blowing method using: a die (1) having a plurality of ultra-fine spinning nozzles and an air nozzle; a rotating suction roll (2) having a porous outer peripheral surface and which sucks from the inside thereof; and a pair of upper and lower suction hoods (3a, 3b) covering the suction roll (2). In said melt-blow method: the interval between the die (1) and the suction roll (2) is set such that polymer fiber breakage or twisting is suppressed, within a range wherein the stretching of a molten polymer is completed and vibration of the obtained polymer fiber substantially does not occur; and the intervals between the outer peripheral surface of the suction roll (2) and the die-side end section of suction hoods (3a, 3b) are set such that fibers that have broken and attached or fused to the surface of the melt-blown nonwoven fabric can be removed by suction.
Inventors:
TAMURA TOMOHIKO (JP)
KOUCHI WATARU (JP)
KOUCHI WATARU (JP)
Application Number:
PCT/JP2012/051887
Publication Date:
August 02, 2012
Filing Date:
January 27, 2012
Export Citation:
Assignee:
TAPYRUS CO LTD (JP)
TAMURA TOMOHIKO (JP)
KOUCHI WATARU (JP)
TAMURA TOMOHIKO (JP)
KOUCHI WATARU (JP)
International Classes:
D04H3/033; D01D5/08; D04H3/007
Foreign References:
| JPH07103508B2 | 1995-11-08 | |||
| JP2002201560A | 2002-07-19 | |||
| JP2009534548A | 2009-09-24 |
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
Kitsuma Takaishi (JP)
Kitsuma Takaishi (JP)
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Claims: