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Title:
LAMINATED NONWOVEN FABRIC AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3955650
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To produce a laminated nonwoven fabric., having a high peel strength without any rough feeling or skin irritation and suitable for a surface material of an absorbing article by fusing and integrating a composite spunbonded nonwoven fabric with a composite melt blown nonwoven fabric respectively having heat fusibility.
SOLUTION: This laminated nonwoven fabric comprises a conjugated spunbonded nonwoven fabric laminated to a conjugated melt blown nonwoven fabric. The laminated nonwoven fabric is obtained by laminating a sheath-core conjugated filament nonwoven fabric, prepared by arranging high density polyethylene and polypropylene having ≥10°C difference in melting point in the sheath and core parts according to a spunbonding method and having 0.5-10de/f size to a conjugated melt blown nonwoven fabric, obtained by discharging a low-melting resin such as a propylene-ethylene-butene terpolymer and a high-melting resin such as polypropylene having ≥10°C difference in melting point onto a moving conveyor according to a melt blowing method, comprising ultrafine filaments having 0.1-10μm fiber diameter and containing ≤10 polymer balls having ≥0.1mm diameter/m2, heat-treating the laminated nonwoven fabric, fusing and integrating the resultant heat-treated laminate. The laminated nonwoven fabric has ≥0.6kg/5cm transverse strength, ≤0.6 uniformity index {[maximum METSUKE (mass per unit area - minimum METSUKE]/average METSUKE} and ≥6g/5cm peel strength.


Inventors:
Yasuki Terakawa
Shingo Horiuchi
Satoshi Ogata
Application Number:
JP23672396A
Publication Date:
August 08, 2007
Filing Date:
September 06, 1996
Export Citation:
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Assignee:
Chisso Co., Ltd.
International Classes:
B32B5/26; D01F8/06; D04H1/541; D04H1/56; D04H3/007; D04H5/00; D06M17/00; (IPC1-7): D04H3/00; B32B5/26; D01F8/06; D04H1/54; D04H1/56; D04H5/00; D06M17/00
Domestic Patent References:
JP5230750A
JP5230754A
Attorney, Agent or Firm:
Takenaga Kawakita