US 11,787,981 B2
Double-sided pressure-sensitive adhesive tape
Daisuke Watanabe, Kita-adachi-gun (JP); Takamine Sugiura, Kita-adachi-gun (JP); and Akira Yamakami, Kita-adachi-gun (JP)
Assigned to DIC CORPORATION, Tokyo (JP)
Filed by DIC CORPORATION, Tokyo (JP)
Filed on May 2, 2022, as Appl. No. 17/734,180.
Application 17/734,180 is a division of application No. 16/621,014, abandoned, previously published as PCT/JP2018/022687, filed on Jun. 14, 2018.
Claims priority of application No. 2017-124191 (JP), filed on Jun. 26, 2017; and application No. 2018-036498 (JP), filed on Mar. 1, 2018.
Prior Publication US 2022/0251426 A1, Aug. 11, 2022
Int. Cl. B32B 43/00 (2006.01); C09J 7/38 (2018.01); C09J 11/04 (2006.01)
CPC C09J 7/385 (2018.01) [B32B 43/006 (2013.01); C09J 7/383 (2018.01); C09J 11/04 (2013.01); C09J 2301/414 (2020.08); C09J 2415/00 (2013.01); C09J 2433/00 (2013.01); C09J 2493/00 (2013.01); Y10T 156/1168 (2015.01)] 25 Claims
 
1. A method for peeling a pressure-sensitive adhesive tape from adherents, the method comprising:
providing a pressure-sensitive adhesive tape which has bonded a first adherent to a second adherent, a part of the pressure-sensitive adhesive tape being overhanded from the first adherent and the second adherent,
pulling the part of the pressure-sensitive adhesive tape in a horizontal direction to peel off the pressure-sensitive adhesive tape from between the first adherent and the second adherent,
the pressure-sensitive adhesive tape comprising:
a base material layer; and
a pressure-sensitive adhesive layer disposed on both surfaces of the base material layer,
the pressure-sensitive adhesive tape having a thickness greater than 150 μm and smaller than 1500 μm, an elongation at break of 600% to 3,000%, and a stress at break of 2.5 to 80.0 MPa,
wherein the base material layer is formed from a block copolymer of a polyaromatic vinyl compound and a conjugated diene compound; and
the pressure-sensitive adhesive layer is disposed on the base material layer, the pressure-sensitive adhesive layer comprising an acryl-based pressure sensitive adhesive or a rubber-based pressure sensitive adhesive.