Adhesive sheet and method for manaufacturing same
OwnerKiichiro Kato, Kazuya Kato +1inventors
InventorsKiichiro Kato, Kazuya Kato, Takashi Takemoto
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Abstract
The present invention relates to a pressure sensitive adhesive sheet 1 comprising a base material 11 and a pressure sensitive adhesive layer 12 wherein a plurality of through holes 2 passing through one face of the pressure sensitive adhesive sheet 1 to the other face are formed. The hole diameter of the through holes 2 is 0.1 to 300 μm and the hole density is 30 to 50,000/100 cm2. It is preferable to form the through holes 2 using a laser beam machining. According the pressure sensitive adhesive sheet 1, an air trapping or a blister can be prevented or removed without disfiguring the pressure sensitive adhesive sheet and while securing a sufficient adhesive strength.
Claims9
A pressure sensitive adhesive sheet, comprising a base material and a pressure sensitive adhesive layer in which a plurality of through holes passing through one face to the other face are formed, wherein the hole diameter of the through holes at the base material and the pressure sensitive adhesive layer is 0.1 to 300 μm and the hole density is 30 to 50,000/100 cm2.
A method for production of pressure sensitive adhesive sheet, comprising the steps of;
- preparing a pressure sensitive adhesive sheet comprising a base material, a pressure sensitive adhesive layer and, as desired, further a release material, and
- performing a hole-forming processing on the pressure sensitive adhesive sheet to form through holes such that the hole diameter at the base material and the pressure sensitive adhesive layer is 0.1 to 300 μm and the hole density is 30 to 50,000/100 cm2.
Dependencies are inferred from the claim text.