公开(公告)号：US20220396717A1

公开(公告)日：2022-12-15

申请号：US17623502

申请日：2020-08-11

Applicant: DENKA COMPANY LIMITED

Inventor： Manabu MIURA ,  Daisuke YOSHIMURA ,  Naoki KOBAYASHI ,  Atsunori KONDO

IPC: C09J7/21 ,  C09J11/04 ,  C09J11/06

Abstract: An adhesive tape can reduce percussive sounds or friction sounds, can prevent contamination of a covered article due to contamination by dirt or dust or intrusion by water or oil, has durability against puncture or friction, and easily bends after binding a covered article. The adhesive tape having a substrate including 100 parts by mass of a polyvinyl chloride and, with respect to the 100 parts by mass of the polyvinyl chloride, 10-100 parts by mass of an elastomer and 10-100 parts by mass of a plasticizer, wherein the elastomer includes an acrylonitrile monomer unit and at least one monomer unit selected from the group made of a chloroprene monomer unit, a butadiene monomer unit, and an isoprene monomer unit and the adhesive tape has an attenuation value of 2 dB or greater in an acoustic absorption test.

公开(公告)号：US20210371711A1

公开(公告)日：2021-12-02

申请号：US17277164

申请日：2019-09-25

Applicant: DENKA COMPANY LIMITED

Inventor： Manabu MIURA

IPC: C09J107/00 ,  C09J151/04 ,  C09J7/50

Abstract: An adhesive sheet in which the adhesive strength of an adhesive layer to other adherends is low, adhesive layers can be firmly bonded to each other, the adhesive layers will not be destroyed even if the adhesive layers are peeled after having once been bonded, and sufficient bonding strength is obtained even if the adhesive layers are re-bonded. An adhesive sheet in which an intermediate layer containing methyl methacrylate-grafted natural rubber is provided on a substrate containing a vinyl chloride resin and a plasticizer, and an adhesive layer including an adhesive containing the plasticizer and a rubber component containing natural rubber and methyl methacrylate-grafted natural rubber is provided on the intermediate layer, wherein a degree of swelling of the rubber component with respect to the plasticizer is by a factor of 1.5 to 4.5.