| 摘要 |
PROBLEM TO BE SOLVED: To provide a double-sided pressure-sensitive adhesive tape ensuring the required adhesive force, having a thinned thickness, and having so easy treatability that mounting operability is hardly reduced. SOLUTION: The double-sided pressure-sensitive adhesive tape is constituted as follows. A plurality of cylindrical recessed parts 11a and 11b are arranged on the front and back-side both principal planes of a base material sheet 1 comprising a polyethylene terephthalate so that the front-side recessed parts 11a and the back-side recessed parts 11b may be arranged alternately so that the positions of the front-side recessed parts 11a may be different from those of the back-side recessed parts 11b. Adhesive layers 2a and 2b comprising an acrylic resin are formed on both the principal planes on which the recessed parts 11a and 11b are arranged, and releasing papers 3a and 3b are seated so as to cover the adhesive layers 2a and 2b. The double-sided pressure-sensitive adhesive tape has a structure ensuring the required amount of the adhesive even if the thickness of each of the adhesive layers 2a and 2b is thinned. COPYRIGHT: (C)2008,JPO&INPIT
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