公开(公告)号：US20210207010A1

公开(公告)日：2021-07-08

申请号：US17056453

申请日：2019-05-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Shuji Takagi ,  Koji Tsuda ,  Pradip K. Bandyopadhyay

IPC: C09J163/04 ,  C09J7/35 ,  C09J7/26 ,  C09J7/25

Abstract: [Problem] To provide a thermally expandable adhesive sheet which is tack-free in the state prior to use and exhibits high workability using a different means than that of related art. [Solution] The present invention provides a thermally expandable adhesive sheet (1) including: a substrate (3); two thermally expandable adhesive layers (5) each provided on either side of the substrate; and two adhesive permeable layers (7) each provided on a surface of the two adhesive layers, the adhesive permeable layers being permeable to the adhesive at the time of the thermal expansion of the adhesive. By heating the adhesive sheet, it is possible to expand the adhesive sheet while simultaneously allowing the adhesive to emerge on the outermost surface of the adhesive sheet.

公开(公告)号：US12221562B2

公开(公告)日：2025-02-11

申请号：US17056453

申请日：2019-05-22

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Shuji Takagi ,  Koji Tsuda ,  Pradip K. Bandyopadhyay

IPC: C09J163/04 ,  C09J7/25 ,  C09J7/26 ,  C09J7/35

Abstract: [Problem] To provide a thermally expandable adhesive sheet which is tack-free in the state prior to use and exhibits high workability using a different means than that of related art. [Solution] The present invention provides a thermally expandable adhesive sheet (1) including: a substrate (3); two thermally expandable adhesive layers (5) each provided on either side of the substrate; and two adhesive permeable layers (7) each provided on a surface of the two adhesive layers, the adhesive permeable layers being permeable to the adhesive at the time of the thermal expansion of the adhesive. By heating the adhesive sheet, it is possible to expand the adhesive sheet while simultaneously allowing the adhesive to emerge on the outermost surface of the adhesive sheet.

公开(公告)号：US20140322529A1

公开(公告)日：2014-10-30

申请号：US14233231

申请日：2012-07-27

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Koji Tsuda ,  Yorinobu Takamatsu

IPC: B29C51/04 ,  B29C51/14 ,  B32B33/00 ,  B32B15/082 ,  B32B27/08 ,  B32B7/12 ,  B29C51/10 ,  C09J7/02

CPC classification number: B29C51/04 ,  B29C51/10 ,  B29C51/14 ,  B29L2031/722 ,  B32B7/12 ,  B32B15/082 ,  B32B27/08 ,  B32B33/00 ,  C09J7/29 ,  C09J2433/006 ,  C09J2475/006 ,  Y10T156/1028 ,  Y10T428/2804 ,  Y10T428/2848 ,  Y10T428/31576

Abstract: A laminated sheet includes a surface layer disposed on an outermost surface, a heat moldable resin layer, and an adhesive layer to be adhered to the substrate, the surface layer containing a (meth)acrylic copolymer obtained by copolymerizing a monomer blend containing an alkyl (meth)acrylate having an alkyl group having 1 to 4 carbon atoms and one or more kind of (meth)acrylic monomer expressed by formula (1): CH2═CR1COR2 (1) wherein R1 is a hydrogen atom or a methyl group, and R2 is selected from a group including an alkoxy group having 5 or more carbon atoms, a cycloalkoxy group having 5 or more carbon atoms, a hydroxyl group, and a nitrogen-containing group.

Abstract translation: 层压片包括设置在最外表面上的表面层，可热模塑树脂层和粘附到基底上的粘合剂层，所述表面层含有通过共聚含有烷基的单体共聚物而获得的（甲基）丙烯酸共聚物 （1）表示的（甲基）丙烯酸类单体：（CH2）CR1COR2（1）其中R1是氢原子或甲基，R2表示氢原子或甲基， 选自含有碳原子数5以上的烷氧基，碳原子数5以上的环烷氧基，羟基，含氮基的基团。