Adhesive sheet

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 7/02 (2006.01) B32B 3/26 (2006.01) B32B 27/00 (2006.01)

Patent

CA 2617682

An adhesive sheet (1) having a base material (11), an adhesive agent layer (12), and through-holes (2) formed in the adhesive sheet, penetrating from one side to the other side of the sheet. The diameter of a through-hole (2) at the surface of the base material (11) is 0.1 - 42 µm, the outer diameter of a recess (21) in the surface of the base material (11), at the peripheral edge of the through-hole (2), is equal to or less than 60 µm, and the tensile elasticity modulus of the base material (11) is 190 - 600 Mpa. In the adhesive sheet (1), air bubbles or blisters can be prevented from occurring or removed by the through-holes, and even when the sheet is stretched, the through-holes are not visible by naked eye and sheet has good appearance.

Feuille d~adhésif (1) comportant un matériau de base (11), une couche d~agent adhésif (12), et des trous traversants (2) percés dans la feuille d~adhésif, pénétrant de part et d~autre de la feuille. Le diamètre d~un trou traversant (2) à la surface du matériau de base (11) est de 0,1 - 42 µm, le diamètre externe d~un retrait (21) à la surface du matériau de base (11), sur le bord périphérique du trou traversant (2), est inférieur ou égal à 60 µm, et le module d'élasticité à la traction du matériau de base (11) est de 190 - 600 Mpa. Dans la feuille d~adhésif (1), l~apparition des bulles ou des ampoules d~air peut être évitée ou leur retrait effectué par les trous traversants, et même lorsque la feuille est étirée, les trous traversants ne sont pas visibles à l'AEil nu et la feuille présente une bonne apparence.

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