Double-sided adhesive tape and method of making and disassembling same
To provide a double-sided adhesive tape that achieves both high adhesive force and excellent easy disassembly properties. The double-sided adhesive tape includes a first adhesive layer; an intermediate layer provided on the first adhesive layer and containing a pigment and a binder resin; a film-like substrate stacked directly on the intermediate layer; and a second adhesive layer provided on the film-like substrate, in which the content of the pigment is from 1 to 85 wt % based on the total mass of the intermediate layer.
1 . A method of disassembling two or more members bonded by a double-sided adhesive tape comprising:
a first adhesive layer;
a second adhesive layer; and
two layers between the first adhesive layer and the second adhesive layer, wherein the two layers are in direct contact with each other, wherein the first adhesive layer is a foam, the second adhesive layer is a foam, or both the first adhesive layer and the second adhesive layer are foams, the method comprising:
inserting a flat tool from a side surface of the double-sided adhesive tape, and
peeling an interface between the two layers between the first adhesive layer and the second adhesive layer.
2 . The method of claim 1 , wherein the first adhesive layer comprises an acrylic-based adhesive, a rubber-based adhesive, a urethane-based adhesive, a silicon-based adhesive agent, a block copolymer-based adhesive, or a combination thereof.
3 . The method of claim 1 , wherein the first adhesive layer comprises an acrylic-based adhesive.
4 . The method of claim 1 , wherein the first adhesive layer comprises a plurality of layers.
5 . The method of claim 1 , wherein the first adhesive layer is a foam.
6 . The method of claim 1 , wherein the second adhesive layer comprises an acrylic-based adhesive, a rubber-based adhesive, a urethane-based adhesive, a silicon-based adhesive agent, a block copolymer-based adhesive, or a combination thereof.
7 . The method of claim 1 , wherein the second adhesive layer comprises an acrylic-based adhesive.
8 . The method of claim 1 , wherein the second adhesive layer is a foam.
9 . The method of claim 1 , wherein the second adhesive layer comprises a plurality of layers.
10 . A method of disassembling two or more members bonded by a double-sided adhesive tape comprising:
a second adhesive layer;
a substrate on the second adhesive layer;
an intermediate layer directly on the substrate; and
a first adhesive layer on the intermediate layer, wherein the first adhesive layer is a foam, the second adhesive layer is a foam, or both the first adhesive layer and the second adhesive layer are foams,
the method comprising:
inserting a flat tool from a side surface of the double-sided adhesive tape, and
peeling an interface between the intermediate layer and the substrate.
11 . The method of claim 10 , further comprising a second intermediate layer between the intermediate layer and the first adhesive layer.
12 . The method of claim 10 , wherein the intermediate layer comprises a pigment and a binder resin.
13 . The method of claim 12 , wherein the pigment is carbon black, titanium oxide, aluminum hydroxide, silica, a phthalocyanine-based pigment, a quinacridone-based pigment, or a combination thereof.
14 . The method of claim 12 , wherein the binder resin is a polyurethane resin, a polyurea resin, a polyacrylate resin, a polyester resin, or a polyamide resin.
15 . The method of claim 12 , wherein the binder resin is a polyurethane resin.
16 . The method of claim 12 , wherein a content of the pigment is from 1 weight percent to 85 weight percent, based on a total mass of the intermediate layer.
17 . The method of claim 10 , wherein the intermediate layer comprises an ink.
18 . The method of claim 10 , wherein the substrate comprises polyethylene terephthalate, polyethylene naphthalate, polyethylene, polypropylene, acrylic, polyimide, polyphenylene sulfide, or polycarbonate.
19 . The method of claim 10 , wherein the substrate is corona-treated.
20 . The method of claim 10 , wherein a surface of the substrate on the second adhesive layer is corona-treated.