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US 11,390,052 B2Granted
Stretchable material, a manufacturing method of a stretch material, a stretchable member, and a clothing product
Assignee3M Innovative Properties Company
InventorKenichiro Morishita
Life of this patent
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Abstract
A stretch material according to one embodiment is a stretch material 10 including an elastomer and having multiple discretely formed slits 15. A stretchable member includes: a stretch part having a structure in which the skin layer of the stretch material 10 is plastically deformed; and a shape retaining part by which the layer structure of the stretch material 10 is maintained. A diaper, which is one example of a clothing product, includes the stretch material 10 or the abovementioned stretchable member.
Claims20
A stretch material including an elastomer and having multiple discretely formed slits, comprising
- a core layer including the elastomer;
- and a skin layer provided on at least one primary surface of the core layer,
- wherein the slits penetrate through the core layer and the skin layer,
- wherein the slits are circular or elliptical-arc shaped, wherein the slits are expanded when the stretch material is elongated, maintaining an arc-shape while being stretched in an elongation direction, and
- wherein the circular or elliptical arc-shaped slits each comprises a first curved slit and a second curved slit provided in a circumference of a virtual circle or ellipse along with unexcision parts not having slits formed therein between ends of the first curved slit and the second curved slit, wherein the stretch material is continuous within the virtual circle or ellipse.
2 more elements
Dependencies are inferred from the claim text.