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US 4,687,477 AGranted
Disposable diaper and method for incorporation of elastic member into such diaper
AssigneeUni-Charm Corporation
InventorsMigaku Suzuki, Satoshi Sasaki, Takashi Mitsuno, Hiroyuki Inagaki
Life of this patent
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Abstract
A disposable diaper provided with elastic members respectively comprising a plurality of rubber strings in respective side flaps of the diaper so that these elastic members provide a plurality of longitudinally extending elastic lines in said side flaps to provide a good fit of said side flaps around infant's thighs.
Claims4
A disposable diaper including
- (A) a water permeable topsheet,
- (B) a water impermeable backsheet overlying said topsheet,
- (C) an absorbent body fixedly interposed between said sheets and inwardly of the perimeter of said sheets so as to leave side flaps extending beyond the opposite outer edges of the absorbent body, and
- (D) elastic means disposed between said sheets in each of said side flaps, each of said elastic means
- (1) comprising a group of 3-45 elastic strings disposed in close parallel relationship to each other and in such a manner that the elastic strings are intrinsically separate from one another,
- (2) being stretched at a stretching ratio of 100-400%,
- said elastic strings
- (a) each being longitudinally extendable,
- (b) each having a cross-sectional area of 0.03-0.45 mm.sup.2,
- (c) having a total cross-sectional area of 0.09-1.35 mm.sup.2,
- whereby the longitudinal lines of elasticity formed in said side flaps permit said slide flaps to effect a good fit around an infant's thighs.
8 more elements
Dependencies are inferred from the claim text.