C - Chemistry – Metallurgy – 09 – J
Patent
C - Chemistry, Metallurgy
09
J
C09J 7/02 (2006.01)
Patent
CA 2571507
An adhesive sheet enabling the prevention of occurrence or removal of air reserved parts and blisters by through holes, enabling the through holes to be less visible on the surface of a base material, and enabling its appearance to be well maintained even under a liquid adhering environment after sticking. The adhesive sheet (1) comprises the base material (11) and an adhesive agent layer (12). The plurality of through holes (2) passed from one face to the other face of the adhesive sheet are formed by laser beam machining. The hole diameter of the through holes (2) on the surface of the base material is 0.1 to 42 µm, the hole diameter of the through holes (2) on the adhesive surface of the adhesive agent layer (12) is 0.1 to 125 µm, the volume V (µm3/quantity) of the base material (11) and the adhesive agent layer (12) per through hole (2) meets the requirement of the following expression (1), 8.00 x 10-3 <= V/t <= 1.00 x 104 ... (1) (t: total thickness (µm) of base material (11) and adhesive agent layer (12)), and the hole density of the through holes (2) is 30 to 50,000/100 cm2.
Il est prévu une feuille adhésive évitant l~apparition ou l~enlèvement de bulles d~air et d~ampoules par des trous traversants, rendant les trous traversants moins visibles à la surface d~un matériau de base et permettant de bien conserver son aspect même dans un environnement d~adhérence liquide après collage. La feuille adhésive (1) comprend le matériau de base (11) et une couche d~agent adhésif (12). La pluralité de trous traversants (2) passant d~une face à l~autre face de la feuille adhésive sont formés par usinage au rayon laser. Le diamètre des trous traversants (2) à la surface du matériau de base est compris entre 0,1 et 42 µm, le diamètre des trous traversants (2) à la surface adhésive de la couche d~agent adhésif (12) est compris entre 0,1 et 125 µm, le volume V (µm?3¿/quantité) du matériau de base (11) et la couche d~agent adhésif (12) par trou traversant (2) répondent aux exigences de l~expression suivante (1), 8,00 x 10?-3¿ <= V/t <= 1,00 x 10?4¿ ... (1) (t: épaisseur totale (µm) du matériau de base (11) et de la couche d~agent adhésif (12)), et la densité des trous traversants (2) est comprise entre 30 et 50.000/100 cm?2¿.
Kato Kiichiro
Matsubayashi Yumiko
Tsuda Kazuhiro
Fetherstonhaugh & Co.
Lintec Corporation
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