Title:
SPUNBONDED NONWOVEN FABRIC LAMINATE
Document Type and Number:
WIPO Patent Application WO/2012/070518
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a spunbonded nonwoven fabric which is not deteriorated in stretchability that is a characteristic property of spunbonded nonwoven fabrics each containing a low-crystalline polypropylene and which has excellent flexibility, tactile sensation, moldability and productivity. The present invention provides a spunbonded nonwoven fabric laminate which is characterized in that a stretchable spunbonded nonwoven fabric having a maximum elongation under load of 50% or more as measured in at least one direction is laminated on at least one surface of an elastic nonwoven fabric that contains a low-crystalline polypropylene fulfilling all of the following requirements (a) to (f): (a) [mmmm] = 20-60 mol%; (b) [rrrr]/(1-[mmmm]) ≤ 0.1; (c) [rmrm] > 2.5mol%; (d) [mm]×[rr]/[mr]2 ≤ 2.0; (e) mass average molecular weight (Mw) = 10,000-200,000; and (f) molecular weight distribution (Mw/Mn) < 4.
Inventors:
YOKOYAMA, Tetsuya (INC. 580-32, Nagaura, Sodegaura-sh, Chiba 65, 〒2990265, JP)
横山 哲也 (〒65 千葉県袖ヶ浦市長浦５８０－３２ 三井化学株式会社内 Chiba, 〒2990265, JP)
横山 哲也 (〒65 千葉県袖ヶ浦市長浦５８０－３２ 三井化学株式会社内 Chiba, 〒2990265, JP)
Application Number:
JP2011/076767
Publication Date:
May 31, 2012
Filing Date:
November 21, 2011
Export Citation:
Assignee:
MITSUI CHEMICALS, INC. (5-2 Higashi-Shimbashi 1-chome, Minato-ku Tokyo, 17, 〒1057117, JP)
三井化学株式会社 (〒17 東京都港区東新橋一丁目５番２号 Tokyo, 〒1057117, JP)
YOKOYAMA, Tetsuya (INC. 580-32, Nagaura, Sodegaura-sh, Chiba 65, 〒2990265, JP)
三井化学株式会社 (〒17 東京都港区東新橋一丁目５番２号 Tokyo, 〒1057117, JP)
YOKOYAMA, Tetsuya (INC. 580-32, Nagaura, Sodegaura-sh, Chiba 65, 〒2990265, JP)
International Classes:
D04H3/147; B32B5/26; D01F8/06; D04H3/007; D04H3/153; D04H3/16
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (Gotanda Yamazaki Bldg. 6F, 13-6 Nishigotanda 7-chome, Shinagawa-k, Tokyo 31, 〒1410031, JP)
Download PDF:
Claims:
Previous Patent: ION MILLING DEVICE AND ION MILLING PROCESSING METHOD
Next Patent: ORGANIC ELECTROLUMINESCENT ELEMENT
Next Patent: ORGANIC ELECTROLUMINESCENT ELEMENT