WO2014142193A1 - 粘着シート - Google Patents
粘着シート Download PDFInfo
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- WO2014142193A1 WO2014142193A1 PCT/JP2014/056549 JP2014056549W WO2014142193A1 WO 2014142193 A1 WO2014142193 A1 WO 2014142193A1 JP 2014056549 W JP2014056549 W JP 2014056549W WO 2014142193 A1 WO2014142193 A1 WO 2014142193A1
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- WIPO (PCT)
- Prior art keywords
- pressure
- sensitive adhesive
- region
- adhesive
- acrylate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
- C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/412—Additional features of adhesives in the form of films or foils characterized by the presence of essential components presence of microspheres
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/50—Additional features of adhesives in the form of films or foils characterized by process specific features
- C09J2301/502—Additional features of adhesives in the form of films or foils characterized by process specific features process for debonding adherents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68318—Auxiliary support including means facilitating the separation of a device or wafer from the auxiliary support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68327—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support used during dicing or grinding
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68381—Details of chemical or physical process used for separating the auxiliary support from a device or wafer
Definitions
- the present invention relates to an adhesive sheet.
- a pressure-sensitive adhesive sheet for fixing a workpiece (substrate) for preventing a reduction in cutting accuracy due to stress and vibration during processing is used.
- the pressure-sensitive adhesive sheet is required to have a sufficient adhesive force with respect to the workpiece during processing, and after processing, it is required that the cut workpiece (electronic component) can be easily peeled off.
- an adhesive sheet containing thermally expandable microspheres in an adhesive is known (for example, Patent Document 1).
- the pressure-sensitive adhesive sheet containing the heat-expandable microspheres exhibits sufficient pressure-sensitive adhesive force during the above-mentioned processing because the heat-expandable microspheres are expanded by heating or foamed to reduce the pressure-sensitive adhesive force.
- the electronic component can be easily peeled off.
- the thermally expandable microspheres protrude from the adhesive, which is inferior in adhesion to the base material or processing base. There is a problem that the remarkably decreases.
- the present invention has been made in order to solve the above-described conventional problems, and an object of the present invention is to realize excellent cutting accuracy and reduction of cutting waste when cutting a small part such as an electronic part. It is to provide an adhesive sheet.
- the pressure-sensitive adhesive sheet of the present invention has a pressure-sensitive adhesive surface whose adhesive strength is reduced by heating only on one side, and the elastic modulus by a nanoindentation method at 25 ° C. of the surface opposite to the pressure-sensitive adhesive surface is 1 MPa or more.
- the pressure-sensitive adhesive region includes the pressure-sensitive adhesive surface as a surface, and a covering material region adjacent to the pressure-sensitive adhesive region on the side opposite to the pressure-sensitive adhesive surface. , Including an adhesive and thermally expandable microspheres.
- region is 50 micrometers or less.
- the adhesive force at the time of sticking the said adhesive surface side to a polyethylene terephthalate film is 0.2 N / 20mm or more.
- the ratio (a2 / a1) of the pressure-sensitive adhesive force (a1) before heating to the pressure-sensitive adhesive force (a2) after heating is 0.0001 to 0.5.
- the surface roughness Ra of the adhesive surface after heating is 3 ⁇ m or more.
- a base material is further provided on the opposite side to the said adhesive surface.
- the present invention has a pressure-sensitive adhesive surface whose adhesive strength is reduced by heating, and the elastic modulus of the surface opposite to the pressure-sensitive adhesive surface is relatively high.
- An adhesive sheet capable of realizing excellent cutting accuracy can be obtained. More specifically, in the present invention, a pressure-sensitive adhesive region including a pressure-sensitive adhesive and thermally expandable microspheres and having a pressure-sensitive adhesive surface as a surface is formed, and the pressure-sensitive adhesive region on the side opposite to the pressure-sensitive adhesive surface is relatively high.
- A. 1 is a schematic sectional view of a pressure-sensitive adhesive sheet according to a preferred embodiment of the present invention.
- the pressure-sensitive adhesive sheet 100 has the pressure-sensitive adhesive surface 11 only on one side thereof.
- the pressure-sensitive adhesive sheet 100 has a surface 21 having an elastic modulus of 1 MPa or more at 25 ° C. as a surface 21 opposite to the pressure-sensitive adhesive surface 11.
- a surface having such an elastic modulus can be formed, for example, by providing a covering material region 20 as described below.
- the pressure-sensitive adhesive sheet 100 preferably includes thermally expandable microspheres 13 that can expand or foam by heating.
- the pressure-sensitive adhesive sheet 100 has a pressure-sensitive adhesive region 10 including a pressure-sensitive adhesive surface 11 as a surface, and a coating material region 20 adjacent to the pressure-sensitive adhesive region 10 opposite to the pressure-sensitive adhesive surface 11.
- the adhesive region 10 preferably includes an adhesive 12 and thermally expandable microspheres 13.
- the pressure-sensitive adhesive region 10 refers to a region from the pressure-sensitive adhesive surface 11 to the interface 1 between the pressure-sensitive adhesive 12 constituting the pressure-sensitive adhesive region 10 and the material constituting the coating material region 20.
- the covering material region 20 is a region from the interface 1 between the adhesive 12 constituting the adhesive region 10 and the material constituting the covering material region 20 to the surface 21 opposite to the adhesive surface 11.
- the thermally expandable microsphere 13 may protrude from the adhesive region 10 to the covering material region 20.
- the thermally expandable microspheres 13 protruding from the pressure-sensitive adhesive region 10 can be covered with the covering material region 20, and as a result, the influence of unevenness due to the thermally expandable microspheres 13 can be eliminated.
- the outer surface (lower surface in the illustrated example) of the covering material region 20 is a surface 21 having an elastic modulus of 1 MPa or more by the nanoindentation method.
- the adhesive surface 11 may be protected by disposing a release paper outside the adhesive surface 11 until the adhesive sheet is put to practical use.
- the interface 1 is clearly illustrated, but the interface may be an interface that is difficult to distinguish visually or with a microscope.
- the interface that is difficult to discriminate visually or with a microscope can be discriminated by analyzing the composition of each region (details will be described later).
- the thermally expandable microsphere 13 protrudes from the adhesive region 10 by forming the coating material region 20 having an elastic modulus appropriately adjusted on the side opposite to the adhesive surface 11. Allowing the adhesive region 10 to be thinned. If the pressure-sensitive adhesive region 10 which is a low elastic region is thinned, it can contribute to the realization of excellent cutting accuracy as a temporary fixing sheet when cutting an electronic component or the like. More specifically, if an electronic component or the like is cut using a pressure-sensitive adhesive sheet having a thin pressure-sensitive adhesive region 10 as a temporary fixing sheet, the chip after cutting is reattached because the pressure-sensitive adhesive sheet is less deformed. It is possible to prevent the cutting surface from becoming slanted or S-shaped, and preventing chipping during cutting.
- the pressure-sensitive adhesive sheet of the present invention has the above-mentioned effect in cutting with a rotary blade frequently used in a dicing process, and also has the above-mentioned effect in cutting with a flat blade adopted to reduce cutting loss. It is particularly useful. Further, even when cutting under heating (for example, 30 ° C. to 150 ° C.), the cutting can be performed with high accuracy as described above.
- the adhesive sheet of this invention removes a to-be-adhered body (for example, chip
- a to-be-adhered body for example, chip
- the adhesive strength when the adhesive surface of the adhesive sheet of the present invention is attached to a polyethylene terephthalate film is preferably 0.2 N / 20 mm or more, more preferably 0.2 N / 20 mm to 20 N / 20 mm, more preferably 2 N / 20 mm to 10 N / 20 mm. If it is such a range, the adhesive sheet useful as a temporary fixing sheet at the time of cutting an electronic component etc. can be obtained.
- the adhesion is an adhesion measured by a method according to JIS Z 0237: 2000 (measurement temperature: 23 ° C., bonding condition: 2 kg roller 1 reciprocation, peeling speed: 300 mm / min, peeling angle 180 °). I say power.
- the pressure-sensitive adhesive strength of the pressure-sensitive adhesive sheet of the present invention is preferably 0.2 N / 20 mm or less, more preferably 0.1 N / 20 mm, after the pressure-sensitive adhesive surface of the pressure-sensitive adhesive sheet is adhered to a polyethylene terephthalate film (for example, 25 ⁇ m thick) and heated. It is as follows.
- the heating of the pressure-sensitive adhesive sheet refers to heating at a temperature and time at which the heat-expandable microspheres expand or foam and the adhesive force is reduced. The heating is, for example, heating at 70 to 270 ° C. for 1 to 10 minutes.
- the adhesive force when adhering the adhesive surface of the adhesive sheet of the present invention to a polyethylene terephthalate film (for example, 25 ⁇ m thick) (that is, the adhesive force before heating (a1)) and the adhesive force after heating (a2)
- the ratio (a2 / a1) is preferably 0.5 or less, more preferably 0.1 or less.
- the lower limit of (a2 / a1) is preferably 0.0001, and more preferably 0.0005.
- the pressure-sensitive adhesive sheet of the present invention is uneven at the pressure-sensitive adhesive surface when heated at a predetermined temperature.
- the surface roughness Ra of the pressure-sensitive adhesive surface after heating the pressure-sensitive adhesive sheet of the present invention is preferably 3 ⁇ m or more, more preferably 5 ⁇ m or more. Within such a range, a pressure-sensitive adhesive sheet can be obtained in which the adhesive strength decreases or disappears after heating and the adherend can be easily peeled off.
- the surface roughness Ra of the pressure-sensitive adhesive surface refers to the surface roughness Ra of the pressure-sensitive adhesive surface of the pressure-sensitive adhesive sheet after heating without an adherend.
- the surface roughness Ra can be measured according to JIS B 0601: 1994.
- FIG. 2 is a schematic cross-sectional view of an adhesive sheet according to another preferred embodiment of the present invention.
- the pressure-sensitive adhesive sheet 200 further includes a base material 30 on the side opposite to the pressure-sensitive adhesive surface 11.
- any appropriate pressure-sensitive adhesive layer or adhesive layer may be provided on the opposite side of the base material 30 from the covering material region 20.
- the release sheet may be arrange
- the release paper can be attached to the substrate via any suitable adhesive.
- the adhesive region 10 and the covering material region 20 are formed on one side of the base material 30, but the adhesive region 10 and the covering material region 20 are formed on both sides of the base material 30.
- a configuration of adhesive region / coating material region / base material / coating material region / adhesive region may be employed.
- the pressure-sensitive adhesive sheet of the present invention has an elastic modulus at 25 ° C. on the surface opposite to the pressure-sensitive adhesive surface of 1 MPa or more, preferably 1 MPa to 5000 MPa, more preferably as described above. Is from 1 MPa to 3500 MPa, more preferably from 1 MPa to 1000 MPa, and particularly preferably from 10 MPa to 600 MPa.
- the pressure-sensitive adhesive sheet having a surface exhibiting such an elastic modulus can be obtained, for example, by forming a covering material region formed of a material different from the pressure-sensitive adhesive region.
- the elastic modulus of the coating material region by the nanoindentation method may correspond to the elastic modulus of the surface opposite to the adhesive surface by the nanoindentation method.
- the modulus of elasticity by the nanoindentation method is obtained by continuously measuring the load and depth of indentation when the indenter is pushed into the sample (for example, adhesive surface) during loading and unloading.
- the elastic modulus by the nanoindentation method means an elastic modulus measured as described above under the measurement conditions of load: 1 mN, load / unloading speed: 0.1 mN / s, and holding time: 1 s.
- an electronic component or the like can be obtained by forming a surface having an elastic modulus of 1 MPa or more by the nanoindentation method on the side opposite to the adhesive surface, that is, by forming a covering material region exhibiting the elastic modulus. It is possible to provide an adhesive sheet that can contribute to the realization of excellent cutting accuracy as a temporary fixing sheet for cutting. Further, by setting the elastic modulus of the coating material region by the nanoindentation method to 5000 MPa or less, the coating material region can follow the unevenness of the thermally expandable microsphere protruding from the adhesive region, and the thermally expandable micro The thermally expandable microsphere can be coated in a form in which a sphere is embedded. In addition, it is possible to provide a pressure-sensitive adhesive sheet that can contribute to the realization of excellent cutting accuracy without impairing the flexibility required for the whole pressure-sensitive adhesive sheet (for example, flexibility enough to follow the adherend).
- the tensile elastic modulus at 25 ° C. of the coating material region is preferably 1 MPa or more, more preferably 1 MPa to 5000 MPa, and further preferably 1 MPa to 1000 MPa. If it is such a range, the effect similar to the effect demonstrated above about the elasticity modulus by a nanoindentation method can be acquired.
- the tensile elastic modulus can be measured according to JIS K 7161: 2008.
- the bending elastic modulus at 25 ° C. of the coating material region is preferably 1 MPa or more, more preferably 1 MPa to 5000 MPa, and further preferably 1 MPa to 1000 MPa. If it is such a range, the effect similar to the effect demonstrated above about the elasticity modulus by a nanoindentation method can be acquired.
- the flexural modulus can be measured according to JIS K 7171: 2008.
- the thickness of the covering material region can be set to any appropriate value according to the unevenness (size) of the thermally expandable microsphere protruding from the adhesive region.
- the thickness of the coating material region is preferably a thickness that can cover all the thermally expandable microspheres protruding from the pressure-sensitive adhesive region, for example, 0.1 ⁇ m to 200 ⁇ m, and preferably 0.1 ⁇ m to 100 ⁇ m. More preferably, the thickness is 0.1 ⁇ m to 45 ⁇ m.
- the thickness of the covering material region is defined as the covering material from the interface 1 between the covering material constituting the covering material region 20 and the adhesive 12 constituting the adhesive region 10, as shown in FIG. This refers to the distance to the surface 21 on the opposite side of the region from the interface 1.
- the portion where the heat-expandable microsphere 13 protrudes from the adhesive region 10 is excluded from the evaluation target of the thickness of the coating material region.
- the thickness of the covering material region can be measured using a ruler, a caliper, and a micrometer.
- Raman spectroscopic analysis for example, Raman spectroscopic analysis, infrared spectroscopic analysis, X-ray electron spectroscopic analysis, etc .; matrix-assisted laser desorption ionization time-of-flight mass spectrometer (MALDI-TOFMS) and time-of-flight secondary ion mass spectrometer (TOF-SIMS) ), Etc., to analyze the composition of the coating material constituting the coating material region and the pressure sensitive adhesive constituting the pressure sensitive adhesive region, and to determine the interface according to the difference in the composition to measure the thickness of the coating material region. Can do.
- the method of discriminating the interface by spectroscopic analysis or mass spectrometry is useful when it is difficult to discriminate the interface visually or by observation with a microscope.
- the material constituting the coating material region examples include a silicone polymer, an epoxy polymer, a polycarbonate polymer, a vinyl polymer, an acrylic polymer, a urethane polymer, a polyester polymer (for example, polyethylene terephthalate), and a polyolefin polymer.
- Polymer materials such as polyamide-based polymers, polyimide-based polymers, and unsaturated hydrocarbon-based polymers. By using these polymer materials, it is possible to easily form a coating material region having the above elastic modulus by appropriately selecting a monomer type, a crosslinking agent, a polymerization degree, and the like.
- the polymer material is excellent in affinity with the thermally expandable microsphere, the pressure-sensitive adhesive constituting the pressure-sensitive adhesive region, and the base material. You may use said polymer material individually or in combination of 2 or more types.
- the material constituting the covering material region a resin material that can be cured (increased elastic modulus) by irradiation with active energy rays may be used. If the covering material region is formed of such a material, the elastic modulus in the above range can be obtained by irradiating active energy rays after application, with low elasticity, high flexibility and excellent handleability when the adhesive sheet is applied. A pressure-sensitive adhesive sheet that can be adjusted to be obtained can be obtained.
- the active energy rays include gamma rays, ultraviolet rays, visible rays, infrared rays (heat rays), radio waves, alpha rays, beta rays, electron beams, plasma flows, ionizing rays, particle rays and the like.
- the elastic modulus according to the nanoindentation method after irradiation with active energy rays falls within the above range.
- the said tensile elastic modulus and / or bending elastic modulus after irradiation of an active energy ray become the said range for the coating
- resin materials that can be cured (increased elastic modulus) by irradiation with active energy rays include, for example, an ultraviolet curing system (written by Kiyomi Kato, published by General Technology Center, (1989)), photocuring technology (Technical Information Association ( 2000)), JP-A-2003-292916, JP-A-4151850 and the like. More specifically, a resin material (R1) containing a polymer as a base material and an active energy ray reactive compound (monomer or oligomer), a resin material (R2) containing an active energy ray reactive polymer, and the like can be mentioned.
- Examples of the base polymer include natural rubber, polyisobutylene rubber, styrene / butadiene rubber, styrene / isoprene / styrene block copolymer rubber, recycled rubber, butyl rubber, polyisobutylene rubber, and nitrile rubber (NBR).
- Examples thereof include rubber polymers; silicone polymers; acrylic polymers. These polymers may be used alone or in combination of two or more.
- Examples of the active energy ray reactive compound include photoreactive monomers or oligomers having a functional group having a carbon-carbon multiple bond such as acryloyl group, methacryloyl group, vinyl group, allyl group, and acetylene group.
- photoreactive monomer or oligomer examples include trimethylolpropane tri (meth) acrylate, tetramethylolmethanetetra (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipenta Erythritol monohydroxypenta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, 1,4-butanediol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, polyethylene glycol di (meth) acrylate, etc. (Meth) acryloyl group-containing compounds; dimer to pentamer of the (meth) acryloyl group-containing compounds;
- the active energy ray-reactive compound monomers such as epoxidized butadiene, glycidyl methacrylate, acrylamide, and vinyl siloxane; or oligomers composed of the monomers may be used.
- the resin material (R1) containing these compounds can be cured by high energy rays such as ultraviolet rays and electron beams.
- an organic salt such as an onium salt and a compound having a plurality of heterocyclic rings in the molecule
- an organic salt is cleaved by irradiation with active energy rays (for example, ultraviolet rays and electron beams) to generate ions, which act as starting species to cause a ring opening reaction of the heterocyclic ring to form a three-dimensional network structure.
- active energy rays for example, ultraviolet rays and electron beams
- examples of the organic salts include iodonium salts, phosphonium salts, antimonium salts, sulfonium salts, and borate salts.
- the heterocyclic ring in the compound having a plurality of heterocyclic rings in the molecule include oxirane, oxetane, oxolane, thiirane, aziridine and the like.
- the content ratio of the active energy ray-reactive compound is preferably 0.00 with respect to 100 parts by weight of the polymer as the base material. 1 to 500 parts by weight, more preferably 1 to 300 parts by weight, still more preferably 10 to 200 parts by weight.
- the resin material (R1) containing the polymer as the base material and the active energy ray-reactive compound can contain any appropriate additive as necessary.
- the additive include an active energy ray polymerization initiator, an active energy ray polymerization accelerator, a crosslinking agent, a plasticizer, and a vulcanizing agent. Any appropriate initiator may be used as the active energy ray polymerization initiator depending on the type of active energy ray used.
- the active energy ray polymerization initiators may be used alone or in combination of two or more.
- the content ratio of the active energy ray polymerization initiator is preferably 0.1 with respect to 100 parts by weight of the polymer as the base material. Parts by weight to 10 parts by weight, more preferably 1 part by weight to 5 parts by weight.
- the active energy ray-reactive polymer examples include polymers having a functional group having a carbon-carbon multiple bond such as an acryloyl group, a methacryloyl group, a vinyl group, an allyl group, and an acetylene group.
- Specific examples of the polymer having an active energy ray-reactive functional group include a polymer composed of a polyfunctional (meth) acrylate; a photocationic polymerization type polymer; a cinnamoyl group-containing polymer such as polyvinyl cinnamate; a diazotized amino novolak Resin; polyacrylamide; and the like.
- the resin material (R2) containing an active energy ray-reactive polymer a mixture of an active energy ray-reactive polymer having an allyl group and a compound having a thiol group can also be used.
- region precursor which has practical hardness (viscosity) can be formed before hardening by active energy ray irradiation (for example, when sticking an adhesive sheet)
- active energy ray reactive functional group An oligomer having an active energy ray-reactive functional group can also be used in addition to a polymer having a.
- the resin material (R2) containing the active energy ray-reactive polymer may further contain the active energy ray-reactive compound (monomer or oligomer). Moreover, the resin material (R2) containing the said active energy ray reactive polymer may contain arbitrary appropriate additives as needed.
- the specific example of an additive is the same as that of the additive which can be contained in the resin material (R1) containing the polymer used as a base material, and an active energy ray reactive compound.
- the content ratio of the active energy ray polymerization initiator is preferably 0.1 to 10 parts by weight with respect to 100 parts by weight of the active energy ray reactive polymer. More preferably, it is 1 to 5 parts by weight.
- the dressing region may further include beads.
- the beads include glass beads and resin beads. If such beads are added to the covering material region, the elastic modulus of the covering material region can be improved, and an adhesive sheet capable of processing the workpiece with higher accuracy can be obtained.
- the average particle diameter of the beads is, for example, 0.01 ⁇ m to 50 ⁇ m.
- the amount of beads added is, for example, 10 to 200 parts by weight, preferably 20 to 100 parts by weight, with respect to 100 parts by weight of the entire covering material region.
- region The said adhesive area
- the thickness of the pressure-sensitive adhesive region is preferably 50 ⁇ m or less, more preferably 1 ⁇ m to 50 ⁇ m, still more preferably 1 ⁇ m to 25 ⁇ m, and particularly preferably 1 ⁇ m to 15 ⁇ m.
- the adhesive area is thicker than 50 ⁇ m, when used as a temporary fixing sheet when cutting electronic parts, etc., the chip after reattaching, the cut surface becomes unstable, the chip is missing at the time of cutting There is a risk of problems such as occurrence of cuttings and generation of cutting waste.
- the covering material region in which the elastic modulus is appropriately adjusted it is possible to allow the heat-expandable microspheres to protrude from the pressure-sensitive adhesive region, and to thin the pressure-sensitive adhesive region.
- the thickness of the pressure-sensitive adhesive region refers to the pressure-sensitive adhesive surface 11 from the interface 1 between the coating material constituting the coating material region 20 and the pressure-sensitive adhesive constituting the pressure-sensitive adhesive region 10 as shown in FIG. The distance to. That is, the portion where the heat-expandable microsphere 13 protrudes from the adhesive region 10 is excluded from the evaluation target of the thickness of the adhesive region.
- the method for determining the interface 1 is as described in the above section B.
- the elastic modulus according to the nanoindentation method of the pressure-sensitive adhesive surface at the temperature at which the pressure-sensitive adhesive sheet is stuck is preferably less than 100 MPa, more preferably 0.1 MPa to 50 MPa, The pressure is preferably 0.1 MPa to 10 MPa.
- the elastic modulus of the adhesive region by the nanoindentation method corresponds to the elastic modulus of the adhesive surface by the nanoindentation method.
- the elastic modulus of the adhesive surface by the nanoindentation method means the elastic modulus measured by the measurement method described in the above section B by selecting a portion where no thermally expandable microspheres exist, that is, the elastic modulus of the adhesive.
- the temperature at the time of sticking the pressure-sensitive adhesive sheet is, for example, 10 to 80 ° C. when an acrylic pressure-sensitive adhesive is used as the pressure-sensitive adhesive, and when a styrene-diene block copolymer pressure-sensitive adhesive is used as the pressure-sensitive adhesive. 40 ° C to 120 ° C.
- the pressure-sensitive adhesive is preferably one that does not restrain expansion or foaming of the thermally expandable microspheres during heating.
- the adhesive include acrylic adhesives, rubber adhesives, vinyl alkyl ether adhesives, silicone adhesives, polyester adhesives, polyamide adhesives, urethane adhesives, and styrene-diene block co-polymers.
- an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive is preferable.
- acrylic pressure-sensitive adhesive examples include, for example, an acrylic pressure-sensitive adhesive based on an acrylic polymer (homopolymer or copolymer) using one or more (meth) acrylic acid alkyl esters as monomer components.
- alkyl (meth) acrylates include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, isopropyl (meth) acrylate, butyl (meth) acrylate, (meth ) Isobutyl acrylate, s-butyl (meth) acrylate, t-butyl (meth) acrylate, pentyl (meth) acrylate, hexyl (meth) acrylate, heptyl (meth) acrylate, octyl (meth) acrylate , 2-ethylhexyl (meth) acrylate, isooctyl (meth) acrylate
- the acrylic polymer is a unit corresponding to another monomer component copolymerizable with the (meth) acrylic acid alkyl ester, if necessary, for the purpose of modifying cohesion, heat resistance, crosslinkability and the like. May be included.
- monomer components include carboxyl group-containing monomers such as acrylic acid, methacrylic acid, carboxyethyl acrylate, carboxypentyl acrylate, itaconic acid, maleic acid, fumaric acid, and crotonic acid; maleic anhydride, itaconic anhydride Acid anhydride monomers such as hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxybutyl (meth) acrylate, hydroxyhexyl (meth) acrylate, hydroxyoctyl (meth) acrylate, (meth) Hydroxyl group-containing monomers such as hydroxydecyl acrylate, hydroxylauryl (meth)
- the rubber-based adhesive examples include natural rubber; polyisoprene rubber, styrene / butadiene (SB) rubber, styrene / isoprene (SI) rubber, styrene / isoprene / styrene block copolymer (SIS) rubber, and styrene / butadiene.
- SBS Styrene block copolymer
- SEBS styrene / ethylene / butylene / styrene block copolymer
- SEPS styrene / ethylene / propylene / styrene block copolymer
- SEP rubber-based pressure-sensitive adhesives based on polymer
- the pressure-sensitive adhesive may contain any appropriate additive as necessary.
- the additive include a crosslinking agent, a tackifier, a plasticizer (for example, trimellitic acid ester plasticizer, pyromellitic acid ester plasticizer), pigment, dye, filler, anti-aging agent, conductive material.
- a plasticizer for example, trimellitic acid ester plasticizer, pyromellitic acid ester plasticizer
- pigment for example, trimellitic acid ester plasticizer, pyromellitic acid ester plasticizer
- dye for example, tackifier
- filler filler
- anti-aging agent for example, pyromellitic acid ester plasticizer
- tackifier Any appropriate tackifier may be used as the tackifier.
- a tackifier resin is used as the tackifier.
- Specific examples of tackifying resins include rosin tackifying resins (eg, unmodified rosin, modified rosin, rosin phenolic resin, rosin ester resin, etc.), terpene tackifying resins (eg, terpene resins, terpene phenols).
- Resin for example, aliphatic hydrocarbon resin, aliphatic cyclic hydrocarbon resin, aromatic resin
- hydrocarbon resins for example, aliphatic hydrocarbon resin, aliphatic cyclic hydrocarbon resin, aromatic resin
- Hydrocarbon resins eg, styrene resins, xylene resins, etc.
- aliphatic / aromatic petroleum resins e.g., styrene resins, xylene resins, etc.
- aliphatic / aromatic petroleum resins aliphatic / alicyclic petroleum resins, hydrogenated hydrocarbon resins, coumarone resins, coumarone indene resins Etc.
- phenolic tackifying resins eg, alkylphenolic resins, xyleneformaldehyde resins, resoles, novos
- ketone-based tackifying resins such as an elastomer-based tackifying resins.
- rosin-based tackifier resins, terpene-based tackifier resins, or hydrocarbon-based tackifier resins such as styrene resins are preferable. You may use a tackifier individually or in combination of 2 or more types.
- tackifiers include terpene phenol resins such as “YS Polystar S145” and “Mighty Ace K140” manufactured by Yasuhara Chemical Co., Ltd. and “Tamanor 901” manufactured by Arakawa Chemical Co., Ltd .; Sumitomo Bakelite Rosin phenolic resin such as “Sumilite Resin PR-12603” manufactured by Arakawa Chemical Co., Ltd .; Alkylphenol resin such as “Tamanol 1010R” and “Tamanol 200N” manufactured by Arakawa Chemical Co., Ltd. An alicyclic saturated hydrocarbon resin such as “Arcon P-140” manufactured by Arakawa Chemical Co., Ltd.
- the addition amount of the tackifier is preferably 5 to 100 parts by weight, more preferably 10 to 50 parts by weight with respect to 100 parts by weight of the base polymer.
- crosslinking agent examples include an isocyanate crosslinking agent, an epoxy crosslinking agent, a melamine crosslinking agent, a peroxide crosslinking agent, a urea crosslinking agent, a metal alkoxide crosslinking agent, a metal chelate crosslinking agent, and a metal.
- examples thereof include salt-based crosslinking agents, carbodiimide-based crosslinking agents, oxazoline-based crosslinking agents, aziridine-based crosslinking agents, and amine-based crosslinking agents. Of these, an isocyanate-based crosslinking agent or an epoxy-based crosslinking agent is preferable.
- isocyanate-based crosslinking agent examples include lower aliphatic polyisocyanates such as butylene diisocyanate and hexamethylene diisocyanate; alicyclic isocyanates such as cyclopentylene diisocyanate, cyclohexylene diisocyanate and isophorone diisocyanate; 2,4- Aromatic isocyanates such as tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, xylylene diisocyanate; trimethylolpropane / tolylene diisocyanate trimer adduct (trade name “Coronate L” manufactured by Nippon Polyurethane Industry Co., Ltd.) Methylolpropane / hexamethylene diisocyanate trimer adduct (trade name “Coronate HL” manufactured by Nippon Polyurethane Industry Co., Ltd.), isoform of hexamethylene diisocyanate
- isocyanate adducts of the like under the trade name "Coronate HX" isocyanate adducts of the like; and the like.
- the content of the isocyanate-based crosslinking agent can be set to any appropriate amount depending on the desired adhesive strength, and is typically 0.1 to 20 parts by weight with respect to 100 parts by weight of the base polymer. More preferably, it is 0.5 to 10 parts by weight.
- epoxy crosslinking agent examples include N, N, N ′, N′-tetraglycidyl-m-xylenediamine, diglycidylaniline, 1,3-bis (N, N-glycidylaminomethyl) cyclohexane (Mitsubishi Gas).
- thermally expandable microsphere any appropriate thermally expandable microsphere can be used as long as it is a microsphere that can expand or foam by heating.
- thermally expandable microsphere for example, a microsphere in which a substance that easily expands by heating is encapsulated in an elastic shell can be used.
- thermally expandable microspheres can be produced by any appropriate method, for example, a coacervation method, an interfacial polymerization method, or the like.
- Examples of the material that easily expands when heated include propane, propylene, butene, normal butane, isobutane, isopentane, neopentane, normal pentane, normal hexane, isohexane, heptane, octane, petroleum ether, methane halide, tetraalkylsilane.
- low-boiling-point liquids such as azodicarbonamide that is gasified by thermal decomposition.
- Examples of the material constituting the shell include nitrile monomers such as acrylonitrile, methacrylonitrile, ⁇ -chloroacrylonitrile, ⁇ -ethoxyacrylonitrile, fumaronitrile; acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, Carboxylic acid monomers such as citraconic acid; vinylidene chloride; vinyl acetate; methyl (meth) acrylate, ethyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, (Meth) acrylic esters such as isobornyl (meth) acrylate, cyclohexyl (meth) acrylate, benzyl (meth) acrylate, ⁇ -carboxyethyl acrylate; styrene mono, such as styrene, ⁇
- the polymer composed of these monomers may be a homopolymer or a copolymer.
- the copolymer include vinylidene chloride-methyl methacrylate-acrylonitrile copolymer, methyl methacrylate-acrylonitrile-methacrylonitrile copolymer, methyl methacrylate-acrylonitrile copolymer, acrylonitrile-methacrylonitrile-itaconic acid copolymer.
- a polymer etc. are mentioned.
- An inorganic foaming agent or an organic foaming agent may be used as the thermally expandable microsphere.
- the inorganic foaming agent include ammonium carbonate, ammonium hydrogen carbonate, sodium hydrogen carbonate, ammonium nitrite, sodium borohydride, various azides and the like.
- the organic foaming agent include chlorofluorinated alkane compounds such as trichloromonofluoromethane and dichloromonofluoromethane; azo compounds such as azobisisobutyronitrile, azodicarbonamide, and barium azodicarboxylate.
- Hydrazine compounds such as para-toluenesulfonyl hydrazide, diphenylsulfone-3,3′-disulfonyl hydrazide, 4,4′-oxybis (benzenesulfonyl hydrazide), allyl bis (sulfonyl hydrazide); p-toluylene sulfonyl semicarbazide, 4, Semicarbazide compounds such as 4′-oxybis (benzenesulfonyl semicarbazide); Triazole compounds such as 5-morpholyl-1,2,3,4-thiatriazole; N, N′-dinitrosopentamethylenetetramine, N, '- dimethyl -N, N'-dinitrosoterephthalamide; etc. N- nitroso compounds, and the like.
- thermally expandable microspheres Commercially available products may be used as the above-mentioned thermally expandable microspheres. Specific examples of commercially available thermally expandable microspheres include “Matsumoto Microsphere” (grade: F-30, F-30D, F-36D, F-36LV, F-50) manufactured by Matsumoto Yushi Seiyaku Co., Ltd.
- the particle diameter of the thermally expandable microsphere before heating is preferably 0.5 ⁇ m to 80 ⁇ m, more preferably 5 ⁇ m to 45 ⁇ m, still more preferably 10 ⁇ m to 20 ⁇ m, and particularly preferably 10 ⁇ m to 15 ⁇ m. . Therefore, the particle size before heating of the thermally expandable microspheres is preferably 6 ⁇ m to 45 ⁇ m, more preferably 15 ⁇ m to 35 ⁇ m, in terms of average particle size.
- the above particle diameter and average particle diameter are values obtained by the particle size distribution measurement method in the laser scattering method.
- the thermally expandable microspheres have an appropriate strength that does not rupture until the volume expansion coefficient is preferably 5 times or more, more preferably 7 times or more, and even more preferably 10 times or more.
- the adhesive force can be efficiently reduced by heat treatment.
- the content ratio of the heat-expandable microspheres in the pressure-sensitive adhesive region can be appropriately set according to the desired decrease in adhesive strength.
- the content ratio of the heat-expandable microspheres is, for example, 1 part by weight to 150 parts by weight, preferably 10 parts by weight to 130 parts by weight, and more preferably 25 parts by weight with respect to 100 parts by weight of the base polymer forming the pressure-sensitive adhesive region. ⁇ 100 parts by weight.
- Base material examples include resin sheets, nonwoven fabrics, paper, metal foils, woven fabrics, rubber sheets, foamed sheets, and laminates thereof (particularly, laminates including resin sheets).
- the resin constituting the resin sheet include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polyethylene (PE), polypropylene (PP), ethylene-propylene copolymer, ethylene- Vinyl acetate copolymer (EVA), polyamide (nylon), wholly aromatic polyamide (aramid), polyimide (PI), polyvinyl chloride (PVC), polyphenylene sulfide (PPS), fluororesin, polyether ether ketone (PEEK) ) And the like.
- the nonwoven fabric include nonwoven fabrics made of natural fibers having heat resistance such as nonwoven fabrics including manila hemp; synthetic resin nonwoven fabrics such as polypropylene resin nonwoven fabrics, polyethylene resin nonwoven fabrics and ester resin nonwoven fabrics
- the thickness of the base material can be set to any appropriate thickness depending on the desired strength or flexibility, the purpose of use, and the like.
- the thickness of the substrate is preferably 1000 ⁇ m or less, more preferably 1 ⁇ m to 1000 ⁇ m, still more preferably 1 ⁇ m to 500 ⁇ m, particularly preferably 3 ⁇ m to 300 ⁇ m, and most preferably 5 ⁇ m to 250 ⁇ m.
- the surface of the substrate may be subjected to surface treatment.
- the surface treatment include corona treatment, chromic acid treatment, ozone exposure, flame exposure, high piezoelectric impact exposure, ionizing radiation treatment, and coating treatment with a primer.
- a coating treatment with an organic coating material is preferable because it improves adhesion and the coating material region is less likely to be thrown and destroyed during heat peeling.
- the organic coating material examples include materials described in Plastic Hard Coat Material II (CMC Publishing, (2004)).
- a urethane-based polymer more preferably polyacryl urethane, polyester urethane, or a precursor thereof is used. This is because coating and application to the base material are simple, and various industrial products can be selected and obtained at low cost.
- the urethane polymer is, for example, a polymer composed of a reaction mixture of an isocyanate monomer and an alcoholic hydroxyl group-containing monomer (for example, a hydroxyl group-containing acrylic compound or a hydroxyl group-containing ester compound).
- the organic coating material may contain a chain extender such as polyamine, an anti-aging agent, an oxidation stabilizer and the like as optional additives.
- the thickness of the organic coating layer is not particularly limited, but for example, about 0.1 ⁇ m to 10 ⁇ m is suitable, preferably about 0.1 ⁇ m to 5 ⁇ m, and more preferably about 0.5 ⁇ m to 5 ⁇ m.
- a pressure-sensitive adhesive coating layer is formed by applying the pressure-sensitive adhesive on a release film (release paper); A method of forming an adhesive region by embedding the thermally expandable microspheres in a coating layer by pressing or the like, and forming (laminating) a coating material region on the adhesive region, (2) on the release film, A method of forming a pressure-sensitive adhesive coating layer by applying a pressure-sensitive adhesive region-forming composition containing a pressure-sensitive adhesive and thermally expandable microspheres, and forming (laminating) a coating material region on the pressure-sensitive adhesive coating layer; ) After applying the above-mentioned pressure-sensitive adhesive on the release film to form a pressure-sensitive adhesive coating layer, a coating material region is formed (laminated) on the pressure-sensitive adhesive coating layer, and then the release film is peeled off to adhere The thermally expandable microspheres are pre-coated from the surface
- the pressure-sensitive adhesive layer can be formed by drying the pressure-sensitive adhesive coating layer formed by applying the pressure-sensitive adhesive.
- the drying is performed at any appropriate timing. Can be broken.
- the drying may be performed before or after embedding the thermally expandable microspheres. Further, it may be before or after the coating material region is formed.
- the release film may be peeled off, and the adhesive surface is protected leaving the release film until the adhesive sheet is put to practical use. Also good.
- the pressure-sensitive adhesive sheet of the present invention comprises a substrate
- the pressure-sensitive adhesive sheet is a surface opposite to the pressure-sensitive adhesive region in the covering material region after the operations (1) to (4) (the side opposite to the pressure-sensitive adhesive surface).
- region may be produced separately, and these laminated bodies may be bonded together.
- the polymer material or resin material described in the above section B is thermally melted to obtain a molded body in a film shape by extrusion molding, and the molded body is formed into the pressure-sensitive adhesive region ( Or a method of laminating on a pressure-sensitive adhesive coating layer) or a substrate, (ii) applying a resin solution containing the polymer material or resin material to the pressure-sensitive adhesive region (or pressure-sensitive adhesive coating layer) or substrate, and then drying.
- a coating material region forming composition containing a monomer, oligomer, or macromer capable of forming the polymer material or resin material is applied to the pressure-sensitive adhesive region (or pressure-sensitive adhesive coating layer) or substrate and coated.
- Examples thereof include a method of polymerizing the material region forming composition (for example, polymerization by heating, active energy ray irradiation, or the like). According to the method (iii), the amount of solvent and / or heat energy used can be reduced.
- the resin solution is applied onto another release film and then dried to obtain a film-like molded article, and then the molded article is applied to the pressure-sensitive adhesive region (or pressure-sensitive adhesive applied). Layer) or a substrate.
- the composition for forming a coating material region is applied onto another release film, and then dried to form a coating material region precursor. Alternatively, it may be laminated on a pressure-sensitive adhesive coating layer) or a substrate and then polymerized.
- an isocyanate compound such as lylene diisocyanate and hexamethylene diisocyanate and a polyol compound such as polyether polyol and polyester polyol are included.
- a method of heating for example, 60 ° C. to 120 ° C. after applying the composition for forming a covering material region may be employed.
- a composition for forming a coating material region comprising a vinyl compound such as vinyl chloride or styrene and any appropriate initiator Can be used.
- composition for forming a coating material region may contain additives such as an initiator, a catalyst, an ultraviolet absorber, and an antioxidant as necessary. Moreover, the said bead may be included.
- the active energy rays can be irradiated at any appropriate timing to obtain an adhesive sheet.
- the irradiation with the active energy ray is performed, for example, after attaching an adherend (workpiece).
- the irradiation with the active energy ray may be performed stepwise. For example, it may be semi-cured before adhering the adherend and may be fully cured after adhering.
- the type and amount of the active energy ray can be set to any appropriate type and amount depending on the type of resin material constituting the covering material region.
- the surface of the pressure-sensitive adhesive region on the release film side becomes the pressure-sensitive adhesive surface. Since the adhesive surface is formed in contact with the release film, there is no protrusion of the heat-expandable microsphere and it is flat. On the other hand, thermally expandable microspheres protrude on the surface of the adhesive region opposite to the adhesive surface.
- both surfaces of the pressure-sensitive adhesive sheet are flattened, and therefore the thickness of the pressure-sensitive adhesive region can be reduced.
- Such a pressure-sensitive adhesive sheet of the present invention can contribute to excellent cutting accuracy and reduction of cutting waste as a temporary fixing sheet when cutting an electronic component or the like.
- a method for manufacturing an electronic component includes sticking the electronic component material (board
- Examples of the electronic parts include parts for semiconductor devices such as silicon wafers; multilayer capacitors: transparent electrodes;
- the pressure-sensitive adhesive sheet is placed on a processing table, and an electronic component material obtained in a large area is stuck on the pressure-sensitive adhesive sheet.
- the electronic component material can be cut by any appropriate method to obtain an electronic component.
- the cutting method include a method using a blade such as a rotary blade and a flat blade, a method using a laser beam, and the like.
- the generation of cutting waste is suppressed and the yield is improved.
- the adhesive region can be made thin, even if the electronic component material is cut by pressing with a flat blade, the chip after cutting is reattached, the cut surface becomes slanted, or S It is possible to prevent the character from becoming unstable when it becomes a character, or chipping from occurring during cutting.
- the present invention even when a thin blade is used for cutting, the above-described effects can be obtained, and manufacturing loss caused by the thickness of the blade (loss due to a gap generated between chips after cutting) can be reduced. it can.
- the present invention that can reduce the manufacturing loss as described above is particularly useful.
- cutting may be performed under heating.
- the processing table may be heated to 30 ° C. to 150 ° C. for cutting.
- the surface where the abundance of the component added only in the coating material region is clearly different is the interface 1, the distance from the adhesive surface 11 to the interface 1 is the thickness of the adhesive region, and the surface on the opposite side of the adhesive surface from the interface 1 The distance up to 21 was defined as the thickness of the covering material region.
- the measurement conditions for Raman mapping measurement are as follows. Excitation wavelength: 532 nm Measurement wave number range: 300 to 3600 cm -1 ⁇ Grating: 600 gr / mm Objective lens: x100 ⁇ Measurement time: 0.2 sec / 1 spectrum ⁇ Measurement range: 20 ⁇ 40 ⁇ m -Number of measurements: 100 x 200 points-Detector: EMCCD
- FIG. 4 shows an SEM image of a cross section of the pressure-sensitive adhesive sheet with Example 11 as a representative example.
- the measurement conditions for SEM observation are as follows. -Observation image: ESED image-Acceleration voltage: 10 kV ⁇ Magnification: 600 times
- the elastic modulus measured on the surface of the cut surface separated by about 3 ⁇ m from the surface is shown (average value of three measurements).
- the nanoindenter apparatus and measurement conditions are as follows. Apparatus and measurement conditions / apparatus: Nanoindenter; Tribodenter manufactured by Hystron Inc. ⁇ Measurement method: Single indentation method ⁇ Measurement temperature: 25 ° C ⁇ Push-in speed: about 1000nm / sec ⁇ Indentation depth: about 800nm ⁇ Tip: Diamond, Berkovich type (triangular pyramid type)
- Adhesive strength measurement (adhesive strength before heating (before expanding thermally expandable microspheres))
- the pressure-sensitive adhesive sheets obtained in Examples and Comparative Examples were cut into a size of 20 mm in width and 140 mm in length, and a polyethylene terephthalate film (trade name “Lumirror S-10” Toray Industries, Inc.) as an adherend on the pressure-sensitive adhesive surface.
- a polyethylene terephthalate film trade name “Lumirror S-10” Toray Industries, Inc.
- the measurement sample was set in a tensile tester with a thermostatic bath (trade name “Shimadzu Autograph AG-120kN”, manufactured by Shimadzu Corporation) and left for 30 minutes. Thereafter, the load was measured when the adherend was peeled from the pressure-sensitive adhesive sheet in the length direction under the conditions of peeling angle: 180 °, peeling speed (tensile speed): 300 mm / min, and the maximum load ( The maximum value of the load excluding the peak top at the initial stage of measurement was determined, and the maximum load divided by the tape width was defined as the adhesive strength (N / 20 mm width). The above operation was performed in an atmosphere of temperature: 23 ⁇ 3 ° C. and humidity: 65 ⁇ 5% RH.
- a measurement sample was prepared in the same manner as described above, and the measurement sample was put into a hot air dryer. After leaving still for 1 minute under the maximum expansion temperature (after-mentioned) of a thermally expansible microsphere in a hot air dryer, the to-be-adhered body was peeled similarly to the above, and the adhesive force was measured. The operation before and after the charging into the hot air dryer was performed in an atmosphere of temperature: 23 ⁇ 3 ° C. and humidity: 65 ⁇ 5% RH.
- the number of chips with no separation between the chips was counted.
- the number obtained by dividing the number of non-separated chips by 100% when completely separated was used as an index of separability.
- the index is less than 2%, the index is 2% or more and less than 5%, the index is 5% or more and less than 15%, and the index is 15% or more.
- a plurality of the obtained ceramic sheets were laminated so as to have a thickness of 500 ⁇ m to obtain a laminated ceramic sheet.
- Cutting temperature 60 ° C.
- cutting depth remaining amount from the table surface
- cutting blade “U-BLADE2” manufactured by UHT
- blade thickness 50 ⁇ m
- blade edge angle 15 °
- the multilayer ceramic sheet was cut into a square shape so as to be a small piece of 1 mm x 0.5 mm. Select any 10 pieces from among the cut pieces, observe the cut surface with a magnifying glass at 50 magnification, check for chipping (lamination of the laminated ceramic sheet generated by the cutting process), and check the chipping generated in 10 pieces. The average of the total number was used as an index. The index is 0 to less than 10 places, ⁇ , 10 to less than 20 places, ⁇ , 20 to less than 40 places, and 40 or more places to x.
- Example 1 (Formation of adhesive region precursor layer) Toluene solution of polymer 2 prepared in Production Example 2 (polymer 2: 100 parts), 1 part of an isocyanate-based crosslinking agent (trade name “Coronate L”, manufactured by Nippon Polyurethane Co., Ltd.), and a terpene phenol resin ( Sumitomo Bakelite Co., Ltd., trade name “Sumilite Resin PR12603” 5 parts, thermally expandable microspheres (Matsumoto Yushi Seiyaku Co., Ltd., trade name “Matsumoto Microsphere F-50D”, foaming (expansion) start temperature: 95 (40 ° C. to 105 ° C., maximum expansion temperature: 125 ° C.
- a toluene solution of polymer 1 prepared in Production Example 1 (polymer 1: 100 parts) and a mixture of dipentaerythritol pentaacrylate and hexaacrylate as an active energy ray-reactive oligomer (trade name “Aronix M404” manufactured by Toagosei Co., Ltd.) ) 20 parts, 2 parts of an isocyanate-based crosslinking agent (trade name “Coronate L” manufactured by Nippon Polyurethane Co., Ltd.) and 3 parts of energy ray polymerization initiator (trade name “Irgacure 651” manufactured by BASF Japan Ltd.) To prepare a mixed solution.
- polymer 1 100 parts
- a mixture of dipentaerythritol pentaacrylate and hexaacrylate as an active energy ray-reactive oligomer (trade name “Aronix M404” manufactured by Toagosei Co., Ltd.) ) 20 parts, 2 parts of an isocyan
- ultraviolet irradiator “UM810 (high pressure mercury lamp light source)” (manufactured by Nitto Seiki Co., Ltd.)
- ultraviolet irradiation with an integrated light amount of 300 mJ / cm 2 was performed from the precursor layer side of the coating material region.
- the polyethylene terephthalate film with a silicone release agent-treated surface was peeled off to obtain a pressure-sensitive adhesive sheet 1 (pressure-sensitive adhesive region thickness: 10 ⁇ m, covering material region thickness: 25 ⁇ m).
- Examples 2 to 15, Comparative Example 1 The type of polymer, cross-linking agent, tackifier, and thermally expandable microsphere when forming the pressure-sensitive adhesive region precursor layer and the amount of the compound are set as shown in Table 1, and the polymer when forming the coating material region precursor layer A pressure-sensitive adhesive sheet was obtained in the same manner as in Example 1 except that the types and blending amounts of the active energy ray-reactive oligomer, the crosslinking agent and the energy ray polymerization initiator were set as shown in Table 1.
- a PET film (thickness) was used instead of the polyethylene terephthalate film with a silicone release agent-treated surface when forming the coating material region precursor layer.
- Example 4 100 ⁇ m
- the mixed solution was applied to obtain an adhesive sheet having a PET film (base material) without peeling off the PET film.
- the adhesive sheet was obtained without performing ultraviolet irradiation.
- the details of the crosslinking agent, tackifier, thermally expandable microsphere, active energy ray reactive oligomer, and energy ray polymerization initiator described in Table 1 are as follows.
- PR51732 Product name “Sumilite Resin PR51732” manufactured by Sumitomo Bakelite Co., Ltd.
- F-260D Matsumoto Yushi Seiyaku Co., Ltd., trade name “Matsumoto Microsphere F-260D”, foaming (expansion) start temperature: 190 ° C. to 200 ° C., maximum expansion temperature: 250 ° C.
- UV1700B manufactured by Nippon Synthetic Chemical Co., Ltd., trade name “purple light UV-1700B”, UV curable urethane acrylate UV7620EA: manufactured by Nippon Synthetic Chemical Co., Ltd., trade name “purple UV-7620EA”, UV curable urethane acrylate UV3000B: Nippon Synthetic Chemical Co., Ltd.
- UV curable urethane acrylate M321 manufactured by Toagosei Co., Ltd., product name “Aronix M321”, trimethylolpropane PO-modified triacrylate (average added moles of propylene oxide (PO): 2) Mole)
- UV7630B manufactured by Nippon Synthetic Chemical Co., Ltd., trade name “purple light UV-7630B”, UV curable urethane acrylate ⁇ energy ray polymerization initiator>
- I184 BASF Corporation, trade name “Irgacure 184”
- I2959 BASF
- trade name “Irgacure 2959” I6511: BASF, trade name “Irgacure 651”
- Example 16 Toluene solution of polymer 1 prepared in Production Example 1 (polymer 1: 100 parts), epoxy-based cross-linking agent (manufactured by Mitsubishi Gas Chemical Company, trade name “Tetrad C”) 0.8 parts, and terpene as a tackifier 30 parts of phenolic resin (trade name “YS Polystar S145” manufactured by Yashara Chemical Co., Ltd.) and thermally expandable microspheres (trade name “Matsumoto Microsphere F-50D” manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), foaming (expansion) start temperature : 95 ° C. to 105 ° C., maximum expansion temperature: 125 ° C.
- the pressure-sensitive adhesive surface of the pressure-sensitive adhesive region precursor layer was bonded to a mat-treated surface of a polyethylene terephthalate film (trade name “Lumirror type X42”, manufactured by Toray Industries, Inc., thickness: 50 ⁇ m) as a coating material region with a hand roller.
- An autoclaving treatment (40 ° C., 5 kgf / cm 2, 10 minutes) gave an adhesive sheet (adhesive region (thickness: 30 ⁇ m) / covering material region (polyethylene terephthalate, thickness: 50 ⁇ m)).
- Example 17 Toluene solution of polymer 4 prepared in Production Example 4 (polymer 4: 100 parts), epoxy cross-linking agent (trade name “Tetrad C” manufactured by Mitsubishi Gas Chemical Co., Ltd.) 0.8 parts, and terpene as a tackifier 5 parts of phenolic resin (trade name “YS Polystar S145” manufactured by Yashara Chemical Co., Ltd.) and thermally expandable microspheres (trade name “Matsumoto Microsphere F-50D” manufactured by Matsumoto Yushi Seiyaku Co., Ltd.), foaming (expansion) start temperature : 95 ° C. to 105 ° C., maximum expansion temperature: 125 ° C.
- Ethyl: dimethylformamide 1: 10 (volume%) was applied, and the adhesive surface of the adhesive region precursor layer was bonded to the coated surface with a hand roller, and dried with a hot air dryer at 80 ° C. for 3 minutes.
- an adhesive sheet adheresive region (thickness: 40 ⁇ m) / covering region (polyethylene terephthalate, thickness: 200 ⁇ m) was obtained.
- the pressure-sensitive adhesive sheet of the present invention can reduce the adhesive strength by heating, and can achieve excellent cutting accuracy when the adherend is cut.
- the production method and pressure-sensitive adhesive sheet of the present invention can be suitably used for the production of chip-shaped electronic components such as semiconductor chips.
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Abstract
Description
好ましい実施形態においては、断面視において、表面として上記粘着面を含む粘着剤領域と、該粘着剤領域の該粘着面とは反対側に隣接する被覆材領域とを有し、該粘着剤領域が、粘着剤と熱膨張性微小球とを含む。
好ましい実施形態においては、上記粘着剤領域の厚みが、50μm以下である。
好ましい実施形態においては、上記粘着面側をポリエチレンテレフタレートフィルムに貼着した際の粘着力が、0.2N/20mm以上である。
好ましい実施形態においては、本発明の粘着シートは、加熱前の粘着力(a1)と加熱した後の粘着力(a2)との比(a2/a1)が、0.0001~0.5である。
好ましい実施形態においては、加熱した後の上記粘着面の表面粗さRaが3μm以上である。
好ましい実施形態においては、上記粘着面とは反対側に、基材をさらに備える。
本発明の別の局面によれば、電子部品の製造方法が提供される。この製造方法は、上記粘着シート上に、電子部品材料を貼着した後、該電子部品材料を切断加工することを含む。
図1は、本発明の好ましい実施形態による粘着シートの概略断面図である。粘着シート100は、その片面にのみ粘着面11を有する。また、粘着シート100は、粘着面11とは反対側の面21として、25℃におけるナノインデンテーション法による弾性率が1MPa以上である面21を有する。このような弾性率を有する面は、例えば、下記のように、被覆材領域20を設けることにより、形成することができる。粘着シート100は、好ましくは加熱により膨張または発泡し得る熱膨張性微小球13を含む。
本発明の粘着シートは、粘着面とは反対側の面の25℃におけるナノインデンテーション法による弾性率が、上記のとおり1MPa以上であり、好ましくは1MPa~5000MPaであり、よりに好ましくは1MPa~3500MPaであり、さらに好ましくは1MPa~1000MPaであり、特に好ましくは10MPa~600MPaである。このような弾性率を示す面を有する粘着シートは、例えば、粘着剤領域とは異なる材料で形成された被覆材領域を形成することにより得ることができる。上記被覆材領域のナノインデンテーション法による弾性率は、粘着面とは反対側の面のナノインデンテーション法による弾性率に相当し得る。ナノインデンテーション法による弾性率とは、圧子を試料(例えば、粘着面)に押し込んだときの、圧子への負荷荷重と押し込み深さとを負荷時、除荷時にわたり連続的に測定し、得られた負荷荷重-押し込み深さ曲線から求められる弾性率をいう。本明細書において、ナノインデンテーション法による弾性率とは、測定条件を荷重:1mN、負荷・除荷速度:0.1mN/s、保持時間:1sとして上記のように測定した弾性率をいう。
上記粘着剤領域は、好ましくは、粘着剤と熱膨張性微小球とを含む。
上記粘着剤としては、加熱時に熱膨張性微小球の膨張または発泡を拘束しないものが好ましい。該粘着剤としては、例えば、アクリル系粘着剤、ゴム系粘着剤、ビニルアルキルエーテル系粘着剤、シリコーン系粘着剤、ポリエステル系粘着剤、ポリアミド系粘着剤、ウレタン系粘着剤、スチレン-ジエンブロック共重合体系粘着剤、放射線硬化型、これらの粘着剤に融点が約200℃以下の熱溶融性樹脂を配合したクリ-プ特性改良型粘着剤等が挙げられる(例えば、特開昭56-61468号公報、特開昭63-17981号公報等参照)。なかでも好ましくは、アクリル系粘着剤またはゴム系粘着剤である。なお、上記粘着剤は、単独で、または2種以上組み合わせて用いてもよい。
上記熱膨張性微小球としては、加熱により膨張または発泡し得る微小球である限りにおいて、任意の適切な熱膨張性微小球を用いることができる。上記熱膨張性微小球としては、例えば、加熱により容易に膨張する物質を、弾性を有する殻内に内包させた微小球が用いられ得る。このような熱膨張性微小球は、任意の適切な方法、例えば、コアセルベーション法、界面重合法等により製造できる。
上記基材としては、例えば、樹脂シート、不織布、紙、金属箔、織布、ゴムシート、発泡シート、これらの積層体(特に、樹脂シートを含む積層体)等が挙げられる。樹脂シートを構成する樹脂としては、例えば、ポリエチレンテレフタレート(PET)、ポリエチレンナフタレート(PEN)、ポリブチレンテレフタレート(PBT)、ポリエチレン(PE)、ポリプロピレン(PP)、エチレン-プロピレン共重合体、エチレン-酢酸ビニル共重合体(EVA)、ポリアミド(ナイロン)、全芳香族ポリアミド(アラミド)、ポリイミド(PI)、ポリ塩化ビニル(PVC)、ポリフェニレンサルファイド(PPS)、フッ素系樹脂、ポリエーテルエーテルケトン(PEEK)等が挙げられる。不織布としては、マニラ麻を含む不織布等の耐熱性を有する天然繊維による不織布;ポリプロピレン樹脂不織布、ポリエチレン樹脂不織布、エステル系樹脂不織布等の合成樹脂不織布等が挙げられる。
本発明の粘着シートの製造方法としては、例えば、(1)離型フィルム(剥離紙)上に、上記粘着剤を塗布して粘着剤塗布層を形成した後、該粘着剤塗布層中に上記熱膨張性微小球をプレス等により埋め込んで粘着剤領域を形成し、該粘着剤領域上に被覆材領域を形成(積層)する方法、(2)離型フィルム上に、上記粘着剤と熱膨張性微小球とを含む粘着剤領域形成用組成物を塗布して粘着剤塗布層を形成し、該粘着剤塗布層上に被覆材領域を形成(積層)する方法、(3)離型フィルム上に、上記粘着剤を塗布して粘着剤塗布層を形成した後、該粘着剤塗布層上に被覆材領域を形成(積層)し、次いで、離型フィルムを剥離し、粘着剤塗布層の被覆材領域とは反対側の面(粘着面)側から上記熱膨張性微小球をプレス等により埋め込む方法、(4)離型フィルム上に被覆材領域を形成し、その一方の面に熱膨張性微小球を設置、さらにその設置面上に粘着剤を塗布する方法等が挙げられる。上記(1)~(4)の方法において、粘着剤を塗布して形成された粘着剤塗布層を乾燥することにより、粘着剤領域が形成され得るが、該乾燥は任意の適切なタイミングで行われ得る。該乾燥は、熱膨張性微小球を埋め込む前でもよく、埋め込んだ後でもよい。また、被覆材領域を形成する前でもよく、形成した後でもよい。熱膨張性微小球を埋め込んだ後に乾燥する場合、熱膨張性微小球が膨張または発泡し難い温度で乾燥することが好ましい。上記(1)および(2)に示した操作の後、離型フィルムを剥離してもよく、粘着シートが実用に供されるまでの間、離型フィルムを残して粘着面が保護されていてもよい。
本発明の別の局面によれば、電子部品の製造方法が提供される。本発明の電子部品の製造方法は、上記粘着シート上に大面積で得られた電子部品材料(基板)を貼着し、該電子部品材料を切断加工することを含む。
実施例1~3、5、6および12~15で得た粘着シートをミクロトームにて切片化して測定試料を準備した。該測定試料の断面について、WITec社製alpha300RSAを用いてラマンスペクトルによる分光分析を行い、被覆材領域にのみ添加した成分由来のピーク(例えば、実施例3においては活性エネルギー線反応性オリゴマー(UV1700B)の1640cm-1のピーク)のピーク強度に基づき、被覆材領域および粘着剤領域の厚みを測定した。実施例3を代表例として、該測定におけるラマンマッピングを図3に示す。被覆材領域にのみ添加した成分の存在量が明確に異なる面を界面1として、粘着面11から該界面1までの距離を粘着剤領域の厚み、該界面1から粘着面とは反対側の面21までの距離を被覆材領域の厚みとした。
なお、ラマンマッピング測定の測定条件は下記のとおりである。
・励起波長 :532nm
・測定波数範囲 :300~3600cm-1
・Grating:600gr/mm
・対物レンズ :x100
・測定時間 :0.2sec/1スペクトル
・測定範囲 :20x40μm
・測定数 :100x200点
・検出器 :EMCCD
実施例4、7~11、16、17および比較例1で得た粘着シートを、厚み方向にトリミングカッターで切断し、Pt-Pdスパッタリング処理を施した後、切断面を日立ハイテクノロジーズ社製S3400N低真空走査電子顕微鏡(SEM)を用いて観察して界面1を判別し、粘着面11から該界面1までの距離を粘着剤領域の厚み、該界面1から粘着面とは反対側の面21を被覆材領域の厚みとした。実施例11を代表例として、粘着シートの断面のSEM画像を図4に示す。
なお、SEM観察の測定条件は下記のとおりである。
・観察像 :ESED像
・加速電圧:10kV
・倍率 :600倍
実施例ならびに比較例で得た粘着シートを、ミクロトームにて厚み方向に切断し、その切断面についてナノインデンターで弾性率を測定した。
より詳細には、被覆材領域について、切断面とはほぼ垂直をなす被覆材領域の表面(粘着面とは反対側の面)、および該表面から3μm程度離れた切断面表面を測定対象とした。測定対象に探針(圧子)を押し当てることで得られる変位―荷重ヒステリシス曲線を、測定装置付帯のソフトウェア(triboscan)で数値処理することで弾性率を得た。なお、表1中には、表面から3μm程度離れた切断面表面にて測定した弾性率を示す(3回測定の平均値)。
ナノインデンター装置ならびに測定条件は下記のとおりである。
装置および測定条件
・装置:ナノインデンター;Hysitron Inc社製 Triboindenter
・測定方法:単一押し込み法
・測定温度:25℃
・押し込み速度:約1000nm/sec
・押し込み深さ:約800nm
・探針:ダイヤモンド製、Berkovich型(三角錐型)
(加熱前(熱膨張性微小球を膨張させる前)の粘着力)
実施例ならびに比較例で得た粘着シートを幅:20mm、長さ:140mmのサイズに切断し、粘着面上に、被着体としてのポリエチレンテレフタレートフィルム(商品名「ルミラーS-10」東レ株式会社製;厚さ:25μm、幅:30mm)を幅方向に左右5mmずつはみ出した状態で、JIS Z 0237:2009に準じ、2kgのローラーを1往復させて貼り合わせて測定試料を準備した。該測定試料を恒温槽付き引張試験機(商品名「島津オートグラフAG-120kN」島津製作所社製)にセットし、30分間放置した。その後、被着体を、剥離角度:180°、剥離速度(引張速度):300mm/minの条件で、長さ方向に粘着シートから引き剥がした時の荷重を測定し、その際の最大荷重(測定初期のピークトップを除いた荷重の最大値)を求め、この最大荷重をテープ幅で除したものを粘着力(N/20mm幅)とした。なお、上記操作は、温度:23±3℃および湿度:65±5%RHの雰囲気下で行った。
(加熱後(熱膨張性微小球を膨張または発泡させた後)の粘着力)
上記と同様にして測定試料を準備し、該測定試料を熱風乾燥器に投入した。熱風乾燥器中、熱膨張性微小球の最大膨張温度(後述)下で1分間静置した後、上記と同様にして被着体を剥離し、粘着力を測定した。なお、熱風乾燥器への投入前後の操作は、温度:23±3℃および湿度:65±5%RHの雰囲気下で行った。
実施例ならびに比較例で得た粘着シートについて、熱膨張性微小球を膨張または発泡させた後、粘着面の表面粗さRaを測定した。熱膨張性微小球の膨張または発泡は、熱風乾燥器中、熱膨張性微小球の最大膨張温度(後述)下で1分間静置して行った。なお、表面粗さの測定はオリンパス社製レーザー顕微鏡「OLS4000」で行った。
実施例ならびに比較例で得た粘着シートに40mm×50mm(厚み500μm)の積層セラミックシートを貼り合わせた。UHT社製切断装置「G-CUT8AA」で粘着シート上の積層セラミックシートを1mm×0.5mmの小片となるよう賽の目状に切断した。粘着シート上の積層セラミックシートを、直径30mmの円柱の側面に沿わせて設置した。円柱に設置した状態で所定の温度(熱膨張性微小球の最大膨張温度(後述))で加熱処理を行い、熱膨張性微小球を膨張させることで小片を粘着シートから剥離し、切断個所のチップ間が分離していないチップ個数を数えた。分離していないチップ個数を100%完全に分離した場合のチップ個数で除した数を分離性の指標とした。指標が2%未満を◎、指標が2%以上5%未満○、指標が5%以上15%未満を△、指標が15%以上を×とした。
積層セラミックシートの組成ならびに切断装置の切断条件の詳細は下記のとおりである。
(積層セラミックシート)
トルエン溶媒にチタン酸バリウム粉末100部と、ポリビニルブチラール樹脂15部と、フタル酸ビス(2-エチルヘキシル)6部と、ジクリセリンステアレート2部とを加えてボールミル分散機で混合及び分散することにより誘電体のトルエン溶液を得た。この溶液をシリコーン離型剤処理面付きポリエチレンテレフタレートフィルム(三菱ポリエステルフィルム社製、商品名「MRF38」、厚み:38μm)のシリコン離型剤処理面に溶剤揮発後の厚みが50μmになるようアプリケーターを用いて塗布し、乾燥してセラミックシートを得た。得られたセラミックシートを厚みが500μmになるように複数枚積層して、積層セラミックシートを得た。
(切断条件)
・切断温度:60℃、切断深さ(テーブル面からの残し量):約20μm
・切断刃:UHT社製「U-BLADE2」、刃厚:50μm、刃先角度:15°
上記(6)と同様にして、積層セラミックシートを1mm×0.5mmの小片となるよう賽の目状に切断した。切断された小片のうち任意の10個を選び出し、切断面を50倍率の拡大鏡で観察してチッピング(切断加工によって発生する積層セラミックシートの欠け)有無を確認し、小片10個に発生したチッピング総数の平均を指標とした。指標が0~10か所未満を◎、10以上20か所未満を○、20以上40か所未満を△、40か所以上を×とした。
[製造例1]ポリマー1の調製
トルエン中に、ブチルアクリレート100部と、アクリル酸5部と、重合開始剤として過酸化ベンゾイル0.2部とを加えた後、加熱して、アクリル系共重合体(ポリマー1)のトルエン溶液を得た。
トルエン中に、2-エチルヘキシルアクリレート30部と、エチルアクリレート70部と、2-ヒドロキシエチルアクリレート4部と、N-フェニルマレイミド5部と、重合開始剤として過酸化ベンゾイル0.2部とを加えた後、加熱して、アクリル系共重合体(ポリマー2)のトルエン溶液を得た。
トルエン中に、2-エチルヘキシルアクリレート30部と、エチルアクリレート70部と、2-ヒドロキシエチルアクリレート4部と、メチルメタクリレート5部と、重合開始剤として過酸化ベンゾイル0.2部とを加えた後、加熱して、アクリル系共重合体(ポリマー3)のトルエン溶液を得た。
トルエン中に、ブチルアクリレート50部と、エチルアクリレート50部と、アクリル酸5部と、2-ヒドロキシエチルアクリレート0.1部と、重合開始剤として過酸化ベンゾイル0.2部とを加えた後、加熱して、アクリル系共重合体(ポリマー4)のトルエン溶液を得た。
酢酸エチル中に、メチルアクリレート70部と、2-エチルヘキシルアクリレート30部と、アクリル酸10部と、重合開始剤として過酸化ベンゾイル0.2部とを加えた後、加熱して、アクリル系共重合体(ポリマー5)の酢酸エチル溶液を得た。
トルエン中に、ブチルアクリレート50モルと、エチルアクリレート50モルと、2-ヒドロキシエチルアクリレート22モルと、重合開始剤として過酸化ベンゾイル(ブチルアクリレート、エチルアクリレートおよび2-ヒドロキシエチルアクリレートの合計100部に対して0.2部)とを加えた後、加熱して共重合体溶液を得た。この共重合体溶液に、該溶液中の2-ヒドロキシエチルアクリレート由来の水酸基の80モル%に相当する量の2-イソシアナトエチルアクリレートを加えた後、加熱して、該2-ヒドロキシエチルアクリレート由来の水酸基に2-イソシアナトエチルメタクリレートを付加することにより、側鎖にメタクリレート基を有するアクリル系共重合体(ポリマー6)のトルエン溶液を得た。
トルエン中に、ブチルアクリレート80モルと、アクリロイルモルホリン30モルと、2-ヒドロキシエチルアクリレート20モルと、重合開始剤として過酸化ベンゾイル(ブチルアクリレート、アクリロイルモルホリンおよび2-ヒドロキシエチルアクリレートの合計100部に対して0.2部)とを加えた後、加熱して、共重合体溶液を得た。この共重合体溶液に、該溶液中の2-ヒドロキシエチルアクリレート由来の水酸基の50モル%に相当する量の2-イソシアナトエチルアクリレートを加えた後、加熱して、該2-ヒドロキシエチルアクリレート由来の水酸基に2-イソシアナトエチルメタクリレートを付加することにより、側鎖にメタクリレート基を有するアクリル系共重合体(ポリマー7)のトルエン溶液を得た。
(粘着剤領域前駆層の形成)
製造例2で調製したポリマー2のトルエン溶液(ポリマー2:100部)と、イソシアネート系架橋剤(日本ポリウレタン社製、商品名「コロネートL」)1部と、粘着付与剤としてテルペンフェノール系樹脂(住友ベークライト社製、商品名「スミライトレジンPR12603」)5部と、熱膨張性微小球(松本油脂製薬社製、商品名「マツモトマイクロスフェアー F-50D」、発泡(膨張)開始温度:95℃~105℃、最大膨張温度:125℃~135℃、平均粒径10μm~18μm)40部とを混合して混合液を調製した。該混合液に、該混合液中の溶剤と同じ溶剤(トルエン)をさらに加えて塗布しやすい粘度にまで粘度調整を行った。この混合液を、シリコーン離型剤処理面付きポリエチレンテレフタレートフィルム(三菱化学ポリエステルフィルム社製、商品名「MRF38」、厚み:38μm)に、溶剤揮発(乾燥)後の厚みが10μmとなるようにアプリケーターを用いて塗布し、その後、乾燥して、該ポリエチレンテレフタレートフィルム上に粘着剤領域前駆層を形成した。
(被覆材領域前駆層の形成)
製造例1で調製した上記ポリマー1のトルエン溶液(ポリマー1:100部)と、活性エネルギー線反応性オリゴマーとしてジペンタエリスリトールペンタとヘキサアクリレートとの混合物(東亜合成社製、商品名「アロニックスM404」)20部と、イソシアネート系架橋剤(日本ポリウレタン社製、商品名「コロネートL」)2部と、エネルギー線重合開始剤(BASFジャパン社製、商品名「イルガキュア651」)3部とを混合して混合液を調製した。該混合液に、該混合液中の溶剤と同じ溶剤(トルエン)をさらに加えて塗布しやすい粘度にまで粘度調整を行った。シリコーン離型剤処理面付きポリエチレンテレフタレートフィルム(三菱化学ポリエステルフィルム社製、商品名「MRF38」、厚み:38μm)に、溶剤揮発(乾燥)後の厚みが25μmとなるようにアプリケーターを用いて塗布し、その後、乾燥して、該ポリエチレンテレフタレートフィルム上に被覆材領域前駆層を形成した。
(粘着シート1の形成)
上記粘着剤領域前駆層と、被覆材領域前駆層とを貼り合わせた。次いで、紫外線照射機「UM810(高圧水銀灯光源)」(日東精機社製)を用いて、被覆剤領域の前駆層側から積算光量300mJ/cm2の紫外線照射を行った。その後、シリコーン離型剤処理面付きポリエチレンテレフタレートフィルムを剥離して、粘着シート1(粘着剤領域の厚み:10μm、被覆材領域の厚み:25μm)を得た。
粘着剤領域前駆層を形成する際のポリマー、架橋剤、粘着付与剤および熱膨張性微小球の種類および配合量を表1に示すように設定し、被覆材領域前駆層を形成する際のポリマー、活性エネルギー線反応性オリゴマー、架橋剤およびエネルギー線重合開始剤の種類および配合量を表1に示すように設定した以外は、実施例1と同様にして粘着シートを得た。
なお、実施例2~5、8、10、13~15および比較例1においては、被覆材領域前駆層を形成する際に、シリコーン離型剤処理面付きポリエチレンテレフタレートフィルムに代えてPETフィルム(厚み:100μm)上に混合液を塗布し、該PETフィルムは剥離せずにPETフィルム(基材)を有する粘着シートを得た。また、実施例4および比較例1においては、紫外線照射を行わずに粘着シート得た。
表1中に記載の架橋剤、粘着付与剤、熱膨張性微小球、活性エネルギー線反応性オリゴマー、エネルギー線重合開始剤の詳細は以下のとおりである。
<架橋剤>
テトラッドC:三菱ガス化学社製、商品名「テトラッドC」、エポキシ系架橋剤
<粘着付与剤>
PR51732:住友ベークライト社製、商品名「スミライトレジンPR51732」
S145:ヤスハラケミカル社製、商品名「YSポリスターS145」
U130:ヤスハラケミカル社製、商品名「YSポリスターU130」
T160:ヤスハラケミカル社製、商品名「YSポリスターT160」
<熱膨張性微小球>
F-30D:松本油脂製薬社製、商品名「マツモトマイクロスフェアー F-30D」、発泡(膨張)開始温度:70℃~80℃、最大膨張温度:110℃~120℃、平均粒径10μm~18μm
F-65D:松本油脂製薬社製、商品名「マツモトマイクロスフェアー F-65D」、発泡(膨張)開始温度:105℃~115℃、最大膨張温度:145℃~155℃、平均粒径12μm~18μm
FN-180SSD:松本油脂製薬社製、商品名「マツモトマイクロスフェアー FN-180SSD」、発泡(膨張)開始温度:135℃~150℃、最大膨張温度:165℃~180℃、平均粒径15μm~25μm
F-260D:松本油脂製薬社製、商品名「マツモトマイクロスフェアー F-260D」、発泡(膨張)開始温度:190℃~200℃、最大膨張温度:250℃~260℃、平均粒径20μm~35μm
<活性エネルギー線反応性オリゴマー>
UV1700B:日本合成化学社製、商品名「紫光UV-1700B」、紫外線硬化型ウレタンアクリレート
UV7620EA:日本合成化学社製、商品名「紫光UV-7620EA」、紫外線硬化型ウレタンアクリレート
UV3000B:日本合成化学社製、商品名「紫光UV-3000B」、紫外線硬化型ウレタンアクリレート
M321:東亜合成社製、商品名「アロニックスM321」、トリメチロールプロパンPO変性トリアクリレート(プロピレンオキサイド(PO)の平均付加モル数:2モル)
UV7630B:日本合成化学社製、商品名「紫光UV-7630B」、紫外線硬化型ウレタンアクリレート
<エネルギー線重合開始剤>
I184:BASF社製、商品名「イルガキュア184」
I2959:BASF社製、商品名「イルガキュア2959」
I651:BASF社製、商品名「イルガキュア651」
製造例1で調製したポリマー1のトルエン溶液(ポリマー1:100部)と、エポキシ系架橋剤(:三菱ガス化学社製、商品名「テトラッドC」)0.8部と、粘着付与剤としてテルペンフェノール系樹脂(ヤスハラケミカル社製、商品名「YSポリスターS145」)30部と、熱膨張性微小球(松本油脂製薬社製、商品名「マツモトマイクロスフェアー F-50D」、発泡(膨張)開始温度:95℃~105℃、最大膨張温度:125℃~135℃、平均粒径10μm~18μm)30部とを混合して混合液を調製した。該混合液に、該混合液中の溶剤と同じ溶剤(トルエン)をさらに加えて塗布しやすい粘度にまで粘度調整を行った。この混合液を、シリコーン離型剤処理面付きポリエチレンテレフタレートフィルム(三菱化学ポリエステルフィルム社製、商品名「MRF38」、厚み:38μm)に、溶剤揮発(乾燥)後の厚みが30μmとなるようにアプリケーターを用いて塗布し、その後、乾燥して、該ポリエチレンテレフタレートフィルム上に粘着剤領域前駆層を形成した。
被覆材領域としてのポリエチレンテレフタレートフィルム(東レ社製、商品名「ルミラータイプX42」、厚み:50μm)のマット処理面に前記粘着剤領域前駆層の粘着面をハンドローラーで貼り合わせた。オートクレーブ処理(40℃、5Kgf/cm2、10分)して粘着シート(粘着剤領域(厚み:30μm)/被覆材領域(ポリエチレンテレフタレート、厚み:50μm))を得た。
製造例4で調製したポリマー4のトルエン溶液(ポリマー4:100部)と、エポキシ系架橋剤(:三菱ガス化学社製、商品名「テトラッドC」)0.8部と、粘着付与剤としてテルペンフェノール系樹脂(ヤスハラケミカル社製、商品名「YSポリスターS145」)5部と、熱膨張性微小球(松本油脂製薬社製、商品名「マツモトマイクロスフェアー F-50D」、発泡(膨張)開始温度:95℃~105℃、最大膨張温度:125℃~135℃、平均粒径10μm~18μm)30部とを混合して混合液を調製した。該混合液に、該混合液中の溶剤と同じ溶剤(トルエン)をさらに加えて塗布しやすい粘度にまで粘度調整を行った。この混合液を、シリコーン離型剤処理面付きポリエチレンテレフタレートフィルム(三菱化学ポリエステルフィルム社製、商品名「MRF38」、厚み:38μm)に、溶剤揮発(乾燥)後の厚みが40μmとなるようにアプリケーターを用いて塗布し、その後、乾燥して、該ポリエチレンテレフタレートフィルム上に粘着剤領域前駆層を形成した。
被覆材領域としてのポリエチレンテレフタレートフィルム(三菱樹脂社製ディアフィクス(PG-CHI(FG、厚み200μm))の一方の面にワイヤーバー(10番手)で酢酸エチルとジメチルフォルアミドとの混合溶媒(酢酸エチル:ジメチルフォルアミド=1:10(体積%))を塗布して、その塗布面に前記粘着剤領域前駆層の粘着面をハンドローラーで貼り合わせた。80℃、3分間熱風乾燥機で乾燥して粘着シート(粘着剤領域(厚み:40μm)/被覆材領域(ポリエチレンテレフタレート、厚み:200μm))を得た。
11 粘着面
12 粘着剤
13 熱膨張性微小球
20 被覆材領域
30 基材
100、200 粘着シート
Claims (8)
- 加熱によって粘着力が低下する粘着面を、片面にのみ有し、
該粘着面とは反対側の面の25℃におけるナノインデンテーション法による弾性率が、1MPa以上である、
粘着シート。 - 断面視において、表面として前記粘着面を含む粘着剤領域と、該粘着剤領域の該粘着面とは反対側に隣接する被覆材領域とを有し、
該粘着剤領域が、粘着剤と熱膨張性微小球とを含む、
請求項1に記載の粘着シート。 - 前記粘着剤領域の厚みが、50μm以下である、請求項1または2に記載の粘着シート。
- 前記粘着面側をポリエチレンテレフタレートフィルムに貼着した際の粘着力が、0.2N/20mm以上である、請求項1から3のいずれかに記載の粘着シート。
- 加熱前の粘着力(a1)と加熱した後の粘着力(a2)との比(a2/a1)が、0.0001~0.5である、請求項1から4のいずれかに記載の粘着シート。
- 加熱した後の前記粘着面の表面粗さRaが3μm以上である、請求項1から5のいずれかに記載の粘着シート。
- 前記粘着面とは反対側に、基材をさらに備える、請求項1から6のいずれかに記載の粘着シート。
- 請求項1から7のいずれかに記載の粘着シート上に、電子部品材料を貼着した後、
該電子部品材料を切断加工することを含む、
電子部品の製造方法。
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017132995A (ja) * | 2016-01-22 | 2017-08-03 | 東レ株式会社 | 積層体 |
JP2018009050A (ja) * | 2016-07-11 | 2018-01-18 | 日東電工株式会社 | 粘着シート |
JP2020007407A (ja) * | 2018-07-04 | 2020-01-16 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、透明フィルム付き粘着シート、積層体および積層体の製造方法 |
JP2020012044A (ja) * | 2018-07-17 | 2020-01-23 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、透明フィルム付き粘着シート、積層体および積層体の製造方法 |
JP2020167258A (ja) * | 2019-03-29 | 2020-10-08 | 日東電工株式会社 | バックグラインドテープ |
JP2022032291A (ja) * | 2020-08-11 | 2022-02-25 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、積層体及び積層体の製造方法 |
JP2022032292A (ja) * | 2020-08-11 | 2022-02-25 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、積層体及び積層体の製造方法 |
JP7568825B2 (ja) | 2021-03-05 | 2024-10-16 | 日東電工株式会社 | 粘着シート |
Families Citing this family (2)
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DE102017212854A1 (de) * | 2017-07-26 | 2019-01-31 | Tesa Se | Bahnförmige, mit Mikroballons geschäumte Haftklebmasse |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6317981A (ja) * | 1986-07-09 | 1988-01-25 | F S K Kk | 粘着シ−ト |
JP2003292916A (ja) * | 2002-04-08 | 2003-10-15 | Nitto Denko Corp | 粘着シートを用いた被着体加工方法 |
JP2007069380A (ja) * | 2005-09-05 | 2007-03-22 | Nitto Denko Corp | 加熱剥離型粘着シート用セパレータ及びセパレータ付き加熱剥離型粘着シート |
JP2007070521A (ja) * | 2005-09-08 | 2007-03-22 | Nitto Denko Corp | 紫外線硬化型加熱剥離性粘着シート及び切断片の分別回収方法 |
JP2012136717A (ja) * | 2012-04-23 | 2012-07-19 | Nitto Denko Corp | 熱剥離型粘着シート及びその製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4703833B2 (ja) | 2000-10-18 | 2011-06-15 | 日東電工株式会社 | エネルギー線硬化型熱剥離性粘着シート、及びこれを用いた切断片の製造方法 |
JP4651799B2 (ja) * | 2000-10-18 | 2011-03-16 | 日東電工株式会社 | エネルギー線硬化型熱剥離性粘着シート、及びこれを用いた切断片の製造方法 |
JP4877689B2 (ja) * | 2001-08-30 | 2012-02-15 | 日東電工株式会社 | エネルギー線硬化型熱剥離性粘着シート、及びこれを用いた切断片の製造方法 |
JP2005255829A (ja) * | 2004-03-11 | 2005-09-22 | Nitto Denko Corp | 加熱剥離型粘着シートおよび被着体の加工方法 |
JP4947921B2 (ja) * | 2005-05-18 | 2012-06-06 | 日東電工株式会社 | 加熱剥離型粘着シートおよび該加熱剥離型粘着シートを用いた被着体の加工方法 |
JP5283838B2 (ja) * | 2006-11-04 | 2013-09-04 | 日東電工株式会社 | 熱剥離性粘着シート及び被着体回収方法 |
JP5689336B2 (ja) * | 2011-03-03 | 2015-03-25 | 日東電工株式会社 | 加熱剥離型粘着シート |
JP5933927B2 (ja) * | 2011-03-08 | 2016-06-15 | 帝人株式会社 | 接着用構成体 |
-
2014
- 2014-03-12 KR KR1020157024749A patent/KR102207511B1/ko active IP Right Grant
- 2014-03-12 JP JP2015505527A patent/JPWO2014142193A1/ja active Pending
- 2014-03-12 CN CN201480016007.0A patent/CN105073929A/zh active Pending
- 2014-03-12 CN CN202110869266.XA patent/CN113652174A/zh active Pending
- 2014-03-12 WO PCT/JP2014/056549 patent/WO2014142193A1/ja active Application Filing
- 2014-03-14 TW TW103109761A patent/TW201443192A/zh unknown
- 2014-03-14 TW TW109108113A patent/TW202024263A/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6317981A (ja) * | 1986-07-09 | 1988-01-25 | F S K Kk | 粘着シ−ト |
JP2003292916A (ja) * | 2002-04-08 | 2003-10-15 | Nitto Denko Corp | 粘着シートを用いた被着体加工方法 |
JP2007069380A (ja) * | 2005-09-05 | 2007-03-22 | Nitto Denko Corp | 加熱剥離型粘着シート用セパレータ及びセパレータ付き加熱剥離型粘着シート |
JP2007070521A (ja) * | 2005-09-08 | 2007-03-22 | Nitto Denko Corp | 紫外線硬化型加熱剥離性粘着シート及び切断片の分別回収方法 |
JP2012136717A (ja) * | 2012-04-23 | 2012-07-19 | Nitto Denko Corp | 熱剥離型粘着シート及びその製造方法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017132995A (ja) * | 2016-01-22 | 2017-08-03 | 東レ株式会社 | 積層体 |
JP2018009050A (ja) * | 2016-07-11 | 2018-01-18 | 日東電工株式会社 | 粘着シート |
JP2020007407A (ja) * | 2018-07-04 | 2020-01-16 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、透明フィルム付き粘着シート、積層体および積層体の製造方法 |
JP2020012044A (ja) * | 2018-07-17 | 2020-01-23 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、透明フィルム付き粘着シート、積層体および積層体の製造方法 |
JP2020167258A (ja) * | 2019-03-29 | 2020-10-08 | 日東電工株式会社 | バックグラインドテープ |
JP7311293B2 (ja) | 2019-03-29 | 2023-07-19 | 日東電工株式会社 | バックグラインドテープ |
JP2022032291A (ja) * | 2020-08-11 | 2022-02-25 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、積層体及び積層体の製造方法 |
JP2022032292A (ja) * | 2020-08-11 | 2022-02-25 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、積層体及び積層体の製造方法 |
JP7207379B2 (ja) | 2020-08-11 | 2023-01-18 | 王子ホールディングス株式会社 | 粘着シート、剥離シート付き粘着シート、積層体及び積層体の製造方法 |
JP7568825B2 (ja) | 2021-03-05 | 2024-10-16 | 日東電工株式会社 | 粘着シート |
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CN105073929A (zh) | 2015-11-18 |
KR102207511B1 (ko) | 2021-01-26 |
KR20150127087A (ko) | 2015-11-16 |
JPWO2014142193A1 (ja) | 2017-02-16 |
CN113652174A (zh) | 2021-11-16 |
TW202024263A (zh) | 2020-07-01 |
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