STRETCHABLE NON-WOVEN FABRIC, ABSORBENT ARTICLE AND ABSORBENT ARTICLE MANUFACTURING METHOD
First Claim
1. A stretchable non-woven fabric comprising:
- a stretchable thermoplastic fiber; and
a heat-adhesive fiber having a lower melting point than that of the stretchable thermoplastic fiber, having a low-stretchability region in a predetermined areawherein a stretchability is lowered to less than that of a circumference thereof, by fusing at least the stretchable thermoplastic fiber in the predetermined area to each other.
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Accused Products
Abstract
The present invention provides an absorbent article imparting superior comfort during wearing without inhibiting an absorbent property of an absorbent body, and a manufacturing method thereof. In the stretchable non-woven fabrics composed of a stretchable thermoplastic fiber and a heat-adhesive fiber having a lower melting point than that of the thermoplastic fiber which is arranged on a skin non-contacting side of a chassis, a low-stretchability portion is formed, in which the stretchability of the stretchable non-woven fabrics is lowered, at least in a portion thereof which overlaps an absorbent body in a thickness direction. The low-stretchability portion is formed by heating and pressurizing the portion of an elasticized non-woven fabric being extended.
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Citations
9 Claims
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1. A stretchable non-woven fabric comprising:
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a stretchable thermoplastic fiber; and a heat-adhesive fiber having a lower melting point than that of the stretchable thermoplastic fiber, having a low-stretchability region in a predetermined area wherein a stretchability is lowered to less than that of a circumference thereof, by fusing at least the stretchable thermoplastic fiber in the predetermined area to each other. - View Dependent Claims (2)
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3. A manufacturing method of a stretchable non-woven fabric having a region
wherein stretchability is lowered in portions thereof, comprising a process of lowering stretchability of a predetermined area in a stretchable non-woven fabric which includes a stretchable thermoplastic fiber and a heat-adhesive fiber having a lower melting point than that of the thermoplastic fiber, wherein at least the thermoplastic fibers are fused to each other in the predetermined area.
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5. A manufacturing method of a stretchable composite sheet comprising:
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a non-woven fabric extending process wherein a stretchable non-woven fabric which includes a stretchable thermoplastic fiber and a heat-adhesive fiber having a lower melting point than that of the thermoplastic fiber is stretched at a predetermined stretching rate selected from a range of 20 to 200%; a composite sheet forming process wherein the non-woven fabric, which is extended in the non-woven fabric extending process, is adhesively laminated to a non-stretchable sheet to obtain the composite sheet; and a process of lowering stretchability wherein stretchability of a predetermined area in the composite sheet is lowered to less than that of a circumference thereof, by fusing at least the thermoplastic fibers in the predetermined area to each other.
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6. An absorbent article having a width direction and a lengthwise direction orthogonal to the width direction, comprising:
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a front trunk region; a rear trunk region; a chassis with a crotch arranged between the front trunk region and the rear trunk region; and an absorbent body arranged along the longitudinal direction wherein at least a portion thereof overlaps the chassis in a thickness direction, wherein a stretchable non-woven fabric comprising a stretchable thermoplastic fiber and a heat-adhesive fiber having a lower melting point than that of the thermoplastic fiber is arranged in at least a portion of the chassis; a low-stretchability region, having a lower stretchability than that of a circumference thereof, is formed in a predetermined region of the stretchable non-woven fabric, and stretchability of a thermoplastic fiber in the low-stretchability region is inhibited by a fusion structure wherein the heat-adhesive fiber in the low-stretchability region is fused to each other. - View Dependent Claims (7, 8, 9)
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Specification