Claims
- 1. A stretchable meltblown nonwoven fabric having a weight per unit area of 5 to 500 g/m.sup.2, a mean diameter of fibers of 0.5 to 30 .mu.m, and a strength per weight per unit area of 2.4 g/cm/g/m.sup.2 or more, composed of a thermoplastic fiber comprising a hydrogenated block copolymer C obtained by hydrogenating a block copolymer including two to about four polymer blocks A composed mainly of a vinyl aromatic compound and two to about four polymer blocks B constituted mainly of a conjugated diene compound, at least one polymer block B being arranged on an end of a polymer chain thereof, the number-average molecular weight of said block copolymer being between 30,000 and 65,000 and the content S of the vinyl aromatic compound in the block copolymer being between 15 wt % and 40 wt % and the remaining content being the conjugated diene compound, the content V of a 1,2-vinyl structure of the conjugated diene compound being between 20 wt % and 50 wt % and the remaining content of the conjugated diene compound being structures other than the 1,2-vinyl structure, and a polyolefin D, wherein a blending ratio (C/D) of the hydrogenated block copolymer and the polyolefin D is between 40/60 and 99/1.
- 2. A stretchable nonwoven fabric according to claim 1, wherein said blending ratio (C/D) is between 50/50 and 95/5.
- 3. A stretchable nonwoven fabric according to claim 1, wherein said polyolefin is a polyethylene.
- 4. A stretchable nonwoven fabric according to claim 1, wherein said polyolefin is a polypropylene.
- 5. A stretchable nonwoven fabric according to claim 1, wherein the mean diameter of fibers constituting said nonwoven fabric is 10 .mu.m or less.
- 6. A stretchable nonwoven fabric according to claim 1, wherein the mean diameter of fibers is 1 to 6 .mu.m.
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-327935 |
Dec 1988 |
JPX |
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RELATED APPLICATIONS
This application is a continuation of application Ser. No. 08/027,606, filed Mar. 5, 1993, now abandoned, which is in turn a continuation of Ser. No. 07/691,056, filed as PCT/JP89/01294, Dec. 25, 1989 published as WO90/07602, Jul. 12, 1990, also abandoned.
US Referenced Citations (22)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0254346 |
Jan 1988 |
EPX |
Non-Patent Literature Citations (1)
Entry |
May 15, 1992 Communication EPA 90 90 0366, European Search Report, and Annex to European Search Report. |
Continuations (2)
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Number |
Date |
Country |
Parent |
27606 |
Mar 1993 |
|
Parent |
691056 |
Jun 1991 |
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