C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 7/04 (2006.01) A61F 13/02 (2006.01)
Patent
CA 2582000
The present invention relates to a pressure-sensitive adhesive tape or sheet comprising: a substrate comprising a nonwoven fabric; and a pressure-sensitive adhesive layer disposed on at least one side of the substrate, said pressure-sensitive adhesive tape or sheet having a plurality of penetrating pores which penetrate the substrate and the pressure-sensitive adhesive layer so that corners of said penetrating pores are aligned in at least one direction, said penetrating pores having a flat polygonal shape, wherein said penetration pore has, among the corners aligned in one direction, at least two corners facing each other in one direction each having an angle of less than 90°; and wherein the flat polygonal shape of said penetrating pore is a flat hexagonal shape or a flat transformed-hexagonal shape.
La présente invention porte sur un ruban ou une feuille adhésifs comprenant un substrat en tissu non tissé et une couche autoadhésive disposée sur au moins un côté du substrat, lesdits ruban ou feuille adhésifs munis de plusieurs pores pénétrant le substrat et la couche autoadhésive de façon que les coins des pores pénétrants sont alignés sur au moins une direction, lesdits pores pénétrants dotés d'une forme polygonale plane, où lesdits pores pénétrants comprennent, parmi les coins alignés sur au moins une direction, au moins deux coins se faisant face dans une direction, chacun muni d'un angle inférieur à 90 degrés, et où la forme polygonale plane dudit pore pénétrant est une forme hexagonale plate ou une forme hexagonale transformée plate.
Furumori Kenji
Hatanaka Hiroshi
Ishikawa Tatsumi
Kasahara Tsuyoshi
Kikuchi Shunetsu
Nitto Denko Corporation
Riches Mckenzie & Herbert Llp
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