3M Innovative Properties Company

Kenichiro Morishita

Koichi Sano

Shou-Lu Grace Wang

A stretch material according to one embodiment is a stretch materialincluding an elastomer and having multiple discretely formed slits. A stretchable member includes: a stretch part having a structure in which the skin layer of the stretch materialis plastically deformed; and a shape retaining part by which the layer structure of the stretch materialis maintained. A diaper, which is one example of a clothing product, includes the stretch materialor the abovementioned stretchable member.

Stretchable material, a manufacturing method of a stretch material, a stretchable member, and a clothing product

To provide a lens array sheet capable of efficiently condensing diffuse light such as the light from a LED light source or EL light source. The lens array sheet comprises a transparent base material, a plurality of light-receiving sections each consisting of a transparent right frustum which is provided on the surface of the base material and is tapered outwardly from the base material, and a plurality of condensing lenses disposed on the back of the base material so as to face the respective light-receiving sections. The side face of the right frustum forms a taper angle larger than 0&#xb0; and less than 15&#xb0; with the central axial line of the right frustum, and an aspect ratio (H/D) which is a proportion of the height (H) of the right frustum to the minimum length (D) of the cut surface of the right frustum is larger than 0, and no more than 10.

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Tokyo, Japan

Kenichiro Morishita