# US 12,595,398 B2 · Sticky tape, article, and method for disassembling article > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,595,398 B2 - Document ID: US12595398B2 - Status: Granted - Kind: B2 - Application number: 18/407,702 - Filed: 2024-01-09 - Published: 2024-05-16 - Granted: 2026-04-07 - Earliest claimed: 2021-07-09 - Assignees: DIC Corporation - Applicants: DIC Corporation - Inventors: Hiromasa Kikuchi; Hideaki Takei; Yusuke Takahashi - Web page: https://patentgrep.com/patent/US12595398B2 ## CPC - C09J 7/10: without carriers - C09J 7/35: Heat-activated - B32B 7/025: Electric or magnetic properties - B32B 7/06: permitting easy separation - B32B 7/12: using interposed adhesives or interposed materials with bonding properties - B32B 27/00: Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)} - C09J 5/06: involving heating of the applied adhesive - C09J 201/00: Adhesives based on unspecified macromolecular compounds - H05B 3/20: Heating elements having extended surface area substantially in a two-dimensional [2D] plane, e.g. plate-heater (H05B3/62, H05B3/68, H05B3/78, H05B3/84 take precedence) - C09J 2203/326: for bonding electronic components such as wafers, chips or semiconductors - C09J 2301/124: the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape - C09J 2301/208: the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive - C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C - C09J 2301/304: the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C - C09J 2301/312: parameters being the characterizing feature - C09J 2301/502: process for debonding adherents - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A sticky tape that can be heated and separated in a short time and can effectively prevent thermal damage to an adherend is provided. The sticky tape separable by heating, includes: an intermediate layer A containing a heating element and an adhesive agent; an adhesive agent layer B1 disposed on one surface side of the intermediate layer A and containing an adhesive agent; and an adhesive agent layer B2 disposed on the other surface side of the intermediate layer A and containing an adhesive agent. At least one of the adhesive agent layer B1 and the adhesive agent layer B2 is a heat-insulating layer C further having heat-insulating properties, or a heat-insulating layer C with heat-insulating properties is further provided at least one of between the intermediate layer A and the adhesive agent layer B1 and between the intermediate layer A and the adhesive agent layer B2. ## Claims ### Claim 1 A sticky tape separable by heating, comprising: an intermediate layer A containing a heating element and an adhesive agent; an adhesive agent layer B1 disposed on a first surface of the intermediate layer A, wherein the adhesive agent layer B1 contains an adhesive agent; and an adhesive agent layer B2 disposed on a second surface of the intermediate layer A, wherein the adhesive agent layer B2 contains an adhesive agent, wherein at least one of the adhesive agent layer B1 and the adhesive agent layer B2 has heat-insulating properties, or a heat-insulating layer C having heat-insulating properties is further provided at least one of between the intermediate layer A and the adhesive agent layer B1 and between the intermediate layer A and the adhesive agent layer B2. ### Claim 2 (depends on 1) The sticky tape according to claim 1, wherein the heat-insulating layer C is provided both between the intermediate layer A and the adhesive agent layer B1 and between the intermediate layer A and the adhesive agent layer B2. ### Claim 3 (depends on 1) The sticky tape according to claim 1, wherein the heat-insulating layer C is selected from the group consisting of a foam layer, a hollow-containing layer, and a hollow-particle-containing layer. ### Claim 4 (depends on 1) The sticky tape according to claim 1, wherein the heat-insulating layer C has a thickness in a range of 15 μm to 1,000 μm. ### Claim 5 (depends on 1) The sticky tape according to claim 1, wherein the heating element has a volume resistivity of 30μΩ·cm or more. ### Claim 6 (depends on 5) The sticky tape according to claim 5, wherein the heating element is selected from the group consisting of nichrome, stainless steel, titanium, nickel silver, and carbon. ### Claim 7 (depends on 1) The sticky tape according to claim 1, wherein the intermediate layer A is a laminate including: the heating element that is a planar-shaped heating element; and an adhesive agent layer a1 that is disposed on a first surface of the planar-shaped heating element and an adhesive agent layer a2 that is disposed on a second surface of the planar-shaped heating element. ### Claim 8 (depends on 7) The sticky tape according to claim 7, wherein the planar-shaped heating element has a pair of extended portions extending from an outer periphery of the adhesive agent layer a1 and the adhesive agent layer a2 in a plan view. ### Claim 9 (depends on 7) The sticky tape according to claim 7, wherein at least one of the adhesive agent layer a1 and the adhesive agent layer a2 is softened or melted by heating. ### Claim 10 (depends on 1) The sticky tape according to claim 1, wherein the intermediate layer A is composed of a single layer containing the heating element and the adhesive agent. ### Claim 11 (depends on 1) The sticky tape according to claim 1, wherein the intermediate layer A is softened or melted by heating. ### Claim 12 (depends on 1) The sticky tape according to claim 1, wherein a temperature at which a loss tangent (tan δ) of an adhesive agent layer formed of the adhesive agent of 0.45 or more is present in a temperature range of 80° C. or more and 200° C. or less. ### Claim 13 (depends on 1) An article comprising: at least two adherends; and the sticky tape according to claim 1 that is between the at least two adherends, wherein the at least two adherends are bonded together via the sticky tape. ### Claim 14 (depends on 13) The article according to claim 13, wherein the sticky tape has a pair of extended portions extending from an outer periphery of the adherend in a plan view. ### Claim 15 (depends on 13) A method for disassembling the article according to claim 13, comprising: softening or melting the intermediate layer A by heating of the heating element to separate the at least two adherends. ### Claim 16 (depends on 15) The method for disassembling the article according to claim 15, wherein the heating of the heating element is resistance heating, and the intermediate layer A is electrically connected to a power supply, the heating element is energized from the power supply, and the intermediate layer A is softened or melted by resistance heating to separate the at least two adherends.