Double-sided adhesive tape and method of making and disassembling same
Assignee3M Innovative Properties Company
InventorYasuhiro Kono
Life of this patent
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Abstract
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.
Claims20
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.
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.
Dependencies are inferred from the claim text.