Compression recovery sheet, production process thereof and absorbent article containing the same
AssigneeKao Corporation
InventorsManabu Matsui, Tetsuya Masuki, Manabu Kaneda, Takanobu Miyamoto, Akihiko Gunji, Mikio Suzuki, Taiki Uchiyama
Life of this patent
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Abstract
A compression recovery sheet which comprises a fiber aggregate containing 10 to 90% by weight of an elastomeric component and has a basis weight of 15 to 100 g/m2, a no-load thickness of 1 to 10 mm, and a compressive recovery of 60% or more and an absorbent article containing the same are disclosed.
Claims18
A compression recovery sheet which comprises a fiber aggregate, said fiber aggregate comprising a conjugate fiber, wherein said conjugate fiber comprises an elastomeric component and a non-elastomeric component,
- wherein said fiber aggregate contains 10 to 90% by weight of the elastomeric component,
- wherein said compression recovery sheet has a basis weight of 15 to 100 g/m2, a no-load thickness of 1 to 10 mm, a compressive recovery of 60% or more, and has 1 to 100 bosses per cm2 of a projected area thereof at a pitch of 1 to 20 mm, wherein one side of said compression recovery sheet has a large number of said bosses regularly arrayed and the reverse side of said compression recovery sheet contains the corresponding depressions from said regularly arrayed bosses of said one side wherein the contour of said one side and that of said reverse side are substantially the same,
- said bosses, which are formed by use of a matched pair of relief engraved rolls, form an uneven pattern on said compression recovery sheet, and
- said conjugate fiber has said non-elastomeric component as a core of the conjugate fiber and said elastomeric component is an outer sheath around said core.
A compression recovery sheet comprising a resin-bonded non-woven fabric substantially comprising synthetic fiber and having been impregnated or coated with an adhesive whose glass transition temperature is 4° C. or lower and has a basis weight of 15 to 100 g/m2, a no-load thickness of 1 to 10 mm, and a compressive recovery of 60% or more,
- wherein said synthetic fiber comprises polypropylene or polyethylene terephthalate, and
- said resin-bonded non-woven fabric is prepared by impregnating or coating an unbonded fiber aggregate with said adhesive followed by a heat treatment.
Dependencies are inferred from the claim text.