WO2014142192A1 - 粘着シート - Google Patents
粘着シート Download PDFInfo
- Publication number
- WO2014142192A1 WO2014142192A1 PCT/JP2014/056548 JP2014056548W WO2014142192A1 WO 2014142192 A1 WO2014142192 A1 WO 2014142192A1 JP 2014056548 W JP2014056548 W JP 2014056548W WO 2014142192 A1 WO2014142192 A1 WO 2014142192A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- sensitive adhesive
- layer
- adhesive layer
- adhesive sheet
- Prior art date
Links
Images
Classifications
-
- 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
-
- 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
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/10—Encapsulated ingredients
-
- 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
-
- 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
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- 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
-
- 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
-
- 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
-
- 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 comprises a pressure-sensitive adhesive layer containing a plurality of thermally expandable microspheres and a mooring layer disposed on one side of the pressure-sensitive adhesive layer, and at least one thermally expandable microsphere is the pressure-sensitive adhesive layer.
- the thermally expandable microspheres protruding from the agent layer are embedded in the anchoring layer.
- the said adhesive layer contains the thermally expansible microsphere which has a particle diameter larger than the thickness of this adhesive layer.
- the height of the part which protrudes from the said adhesive layer of the said thermally expansible microsphere is 0.4 micrometer or more.
- the length (l1) of an interface between the pressure-sensitive adhesive layer and the anchoring layer in a cross-sectional view in a predetermined region including a portion where the thermally expandable microsphere protrudes from the pressure-sensitive adhesive layer is 1.02 or more.
- the thermally expandable microsphere has an average particle size of 6 ⁇ m to 45 ⁇ m.
- the elastic modulus by the nanoindentation method in 25 degreeC of the said mooring layer is 1 Mpa or more.
- the thickness of the said adhesive layer is 20 micrometers or less.
- the surface roughness Ra of the surface of the pressure-sensitive adhesive layer opposite to the anchoring layer when the thermally expandable microspheres are expanded or foamed by heating is 3 ⁇ m or more.
- the elasticity modulus by the nanoindentation method in 25 degreeC of the said adhesive layer is 1 Mpa or less.
- a substrate is further provided on the side of the anchoring layer opposite to the pressure-sensitive adhesive layer.
- a thermal expansion microsphere is provided by disposing a mooring layer on one side of an adhesive layer containing thermal expansion microspheres and embedding the thermal expansion microsphere protruding from the adhesive layer in the anchoring layer.
- the pressure-sensitive adhesive layer which is a low elastic region, can be made thin without the influence of irregularities due to, and as a result, a pressure-sensitive adhesive sheet that can realize excellent cutting accuracy can be obtained.
- the pressure-sensitive adhesive layer can be made thin, the generation of cutting waste can be suppressed by performing a cutting process on a micro component such as an electronic component using the pressure-sensitive adhesive sheet of the present invention.
- 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 includes a pressure-sensitive adhesive layer 10 and a mooring layer 20 disposed on one side of the pressure-sensitive adhesive layer 10.
- the pressure-sensitive adhesive layer 10 includes a plurality of thermally expandable microspheres 11. Practically, the pressure-sensitive adhesive layer 10 further includes a pressure-sensitive adhesive 12. At least one or more thermally expandable microspheres 11 protrude from the pressure-sensitive adhesive layer 10, and the protruded thermally expandable microspheres 11 are embedded so as to be anchored to the anchoring layer 20.
- the protruding thermally expandable microspheres 11 are embedded in the anchoring layer 20, the influence of unevenness due to the thermally expandable microspheres 11 can be eliminated.
- the thermally expandable microsphere 11 can expand or foam by heating.
- release paper may be disposed on the pressure-sensitive adhesive layer 10 to protect the pressure-sensitive adhesive layer 10 until the pressure-sensitive adhesive sheet is put to practical use.
- the interface 1 between the pressure-sensitive adhesive layer 10 and the mooring layer 20 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 layer, for example (details will be described later).
- the provision of the anchoring layer 10 allows the heat-expandable microspheres 11 to protrude from the pressure-sensitive adhesive layer 10 and allows the pressure-sensitive adhesive layer 10 to be thinned. If the pressure-sensitive adhesive layer 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 layer 10 as a temporary fixing sheet, the chip after cutting is reattached because there is little deformation of the pressure-sensitive adhesive sheet. 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 pressure-sensitive adhesive layer 10 includes the thermally expandable microspheres 11, when the adherend (for example, a chip after cutting) is peeled from the pressure-sensitive adhesive sheet, By heating at a temperature at which the expandable microspheres 11 can expand or foam, unevenness is generated on the adhesive surface, and the adhesive force of the adhesive surface can be reduced or eliminated.
- the height H of the portion protruding from the adhesive layer of the thermally expandable microsphere is preferably 0.4 ⁇ m or more, more preferably 0.4 ⁇ m to 80 ⁇ m, and further preferably 0.6 ⁇ m to 80 ⁇ m. is there.
- the anchoring layer by providing the anchoring layer, it is possible to allow the thermally expandable microspheres to protrude at the height as described above, and to reduce the thickness of the pressure-sensitive adhesive layer. Further, if the height H is in the above range, the strength and elastic modulus of the mooring layer are prevented from lowering, and a better cutting accuracy can be realized as a temporary fixing sheet when cutting electronic parts and the like.
- a pressure-sensitive adhesive sheet that can contribute can be provided.
- the height of the portion of the thermally expandable microsphere protruding from the adhesive layer is preferably smaller than the thickness of the anchoring layer.
- the length (l1) of the interface between the pressure-sensitive adhesive layer and the anchoring layer and the projection line in the thickness direction of the interface in a cross-sectional view in a predetermined region including the portion where the thermally expandable microsphere protrudes from the pressure-sensitive adhesive layer is preferably 1.02 or more, and more preferably 1.05 to 5.
- the anchoring layer it is possible to allow the heat-expandable microspheres to protrude with the interface shape as described above, and to reduce the thickness of the pressure-sensitive adhesive layer.
- the strength and elastic modulus of the mooring layer are prevented from being lowered, and the cutting accuracy of the temporary fixing sheet when cutting an electronic component or the like is improved.
- a pressure-sensitive adhesive sheet that can contribute to realization can be provided.
- the thick line 11 shown in the schematic sectional drawing of FIG. 2 is an interface of an adhesive layer and a mooring layer.
- the pressure-sensitive adhesive strength when the pressure-sensitive adhesive surface of the pressure-sensitive adhesive sheet of the present invention (that is, the surface opposite to the anchoring layer of the pressure-sensitive adhesive layer) is attached to a polyethylene terephthalate film (for example, 25 ⁇ m thick) is preferably 0.2 N / It is 20 mm or more, more preferably 0.2 N / 20 mm to 20 N / 20 mm, and still 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 surface of the pressure-sensitive adhesive layer opposite to the anchoring layer (that is, the pressure-sensitive adhesive surface) is uneven.
- 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 of the anchoring layer 20 opposite to the pressure-sensitive adhesive layer 10.
- any appropriate other pressure-sensitive adhesive layer or adhesive layer may be provided on the opposite side of the base material 30 from the anchoring layer 20.
- the release sheet may be arrange
- the adhesive layer 10 and the mooring layer 20 are formed on one side of the base material 30, the adhesive layer 10 and the mooring layer 20 are formed on both sides of the base material 30, for example,
- the composition of pressure-sensitive adhesive layer / tethered layer / base material / tethered layer / pressure-sensitive adhesive layer may be employed.
- the elastic modulus of the anchoring layer by the nanoindentation method at 25 ° C. is preferably 1 MPa or more, more preferably 1 MPa to 5000 MPa, further preferably 1 MPa to 3500 MPa, and particularly preferably 1 MPa to 1000 MPa. Yes, most preferably 10 MPa to 600 MPa.
- a pressure-sensitive adhesive sheet having a layer exhibiting such an elastic modulus can be obtained, for example, by forming a tether layer formed of a material different from that of the pressure-sensitive adhesive layer.
- 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 obtained from the applied load-indentation depth curve 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 adhesive sheet that can contribute to the realization of better cutting accuracy as a temporary fixing sheet when cutting electronic parts and the like can be provided. Furthermore, by setting the elastic modulus of the anchoring layer by the nanoindentation method to 5000 MPa or less, the anchoring layer can follow the unevenness of the thermally expandable microsphere protruding from the adhesive layer, and the thermally expandable microsphere is The thermally expandable microspheres can be coated in an embedded form. 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 anchoring layer 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 anchoring layer 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 anchoring layer can be set to any appropriate value according to the unevenness amount (height of the protruding portion) of the thermally expandable microsphere protruding from the adhesive layer.
- the thickness of the anchoring layer is preferably a thickness that can cover all the thermally expandable microspheres protruding from the pressure-sensitive adhesive layer, and is, for example, from 0.4 ⁇ m to 200 ⁇ m, preferably from 0.6 ⁇ m to 100 ⁇ m. More preferably, it is 0.6 ⁇ m to 45 ⁇ m.
- the thickness of the mooring layer refers to the interface between the material constituting the mooring layer 20 and the pressure-sensitive adhesive 12 constituting the pressure-sensitive adhesive layer 10 as shown in FIG.
- the thickness of the anchoring layer is determined by a ruler, The caliper can be measured using a micrometer. Moreover, you may measure the thickness of a tether layer using microscopes, such as an electron microscope, an optical microscope, and an atomic force microscope.
- the thickness of the anchoring layer may be measured by discriminating the interface based on the difference in composition between the anchoring layer and the pressure-sensitive adhesive layer.
- Raman spectroscopic analysis infrared spectroscopic analysis, X-ray electron spectroscopic analysis, etc .
- matrix-assisted laser desorption ionization time-of-flight mass spectrometer MALDI-TOFMS
- time-of-flight secondary ion mass spectrometer TOF-SIMS
- the composition of the material constituting the mooring layer and the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer, and the thickness of the mooring layer can be measured by discriminating the interface based on the difference in the composition.
- 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 anchoring layer examples include silicone polymers, epoxy polymers, polycarbonate polymers, vinyl polymers, acrylic polymers, urethane polymers, polyester polymers (for example, polyethylene terephthalate), polyolefin polymers, Polymer materials such as polyamide-based polymers, polyimide-based polymers, and unsaturated hydrocarbon-based polymers can be used. If these polymer materials are used, the anchoring layer having the above elastic modulus can be easily formed by appropriately selecting the monomer type, the crosslinking agent, the polymerization degree, and the like. Moreover, the polymer material is excellent in affinity with the heat-expandable microsphere, the pressure-sensitive adhesive constituting the pressure-sensitive adhesive layer, and the base material. You may use said polymer material individually or in combination of 2 or more types.
- the material constituting the anchoring layer a resin material that can be cured (increased elastic modulus) by irradiation with active energy rays may be used. If the anchoring layer is formed of such a material, the elastic sheet has low elasticity and is highly flexible and easy to handle at the time of attaching the adhesive sheet. An adhesive sheet that can be adjusted 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 anchoring layer composed of a resin material that can be cured by irradiation with active energy rays preferably has an elastic modulus in the above range by the nanoindentation method after irradiation with active energy rays.
- cured by irradiation of an active energy ray becomes the said range in the said tensile elastic modulus and / or bending elastic modulus after irradiation of an active energy ray.
- 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.
- an active energy ray reactive functional group is provided.
- an oligomer having an active energy ray-reactive functional group can also be used.
- 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 anchoring layer may further include beads.
- the beads include glass beads and resin beads. If such beads are added to the anchoring layer, the elastic modulus of the anchoring layer can be improved, and an adhesive sheet that can process 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 mooring layer.
- the pressure-sensitive adhesive layer preferably contains a pressure-sensitive adhesive and thermally expandable microspheres.
- the thickness of the pressure-sensitive adhesive layer is preferably 20 ⁇ m or less, more preferably 0.1 ⁇ m to 20 ⁇ m, still more preferably 1 ⁇ m to 15 ⁇ m, and particularly preferably 1 ⁇ m to 10 ⁇ m.
- the pressure-sensitive adhesive layer is thicker than 20 ⁇ m, when used as a temporary fixing sheet when cutting electronic parts, the chip after cutting reattaches, the cut surface becomes unstable, and the chip is missing when cutting There is a risk of problems such as occurrence of cuttings and generation of cutting waste.
- the anchoring layer it is possible to allow the heat-expandable microspheres to protrude from the pressure-sensitive adhesive layer and to make the pressure-sensitive adhesive layer thin.
- the thickness of the pressure-sensitive adhesive layer refers to the thickness of the pressure-sensitive adhesive layer from the interface between the material constituting the anchoring layer 20 and the pressure-sensitive adhesive 12 constituting the pressure-sensitive adhesive layer 10 as shown in FIG. The distance to the surface opposite to the interface. That is, the portion where the thermally expandable microsphere 11 protrudes from the pressure-sensitive adhesive layer 10 is excluded from the evaluation target of the thickness of the pressure-sensitive adhesive layer.
- the method for discriminating the interface between the material constituting the mooring layer 20 and the pressure-sensitive adhesive 12 constituting the pressure-sensitive adhesive layer 10 is as described in the above section B.
- the pressure-sensitive adhesive layer preferably contains thermally expandable microspheres having a particle diameter larger than the thickness of the pressure-sensitive adhesive layer.
- the thickness of the pressure-sensitive adhesive layer may be smaller than the particle diameter of the thermally expandable microsphere.
- the elastic modulus by the nanoindentation method of the pressure-sensitive adhesive layer at the temperature when the pressure-sensitive adhesive sheet of the present invention is adhered is preferably less than 100 MPa, more preferably 0.1 MPa to 50 MPa, and still more preferably 0. .1 MPa to 10 MPa.
- the elastic modulus of the pressure-sensitive adhesive layer 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 pressure-sensitive adhesive.
- the temperature at the time of adhering the pressure-sensitive adhesive sheet is, for example, 10 ° C. to 80 ° C. when an acrylic 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 copolymers.
- 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 Co., Ltd. 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 paratoluenesulfonyl 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 for 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 layer 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 layer. ⁇ 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 anchoring layer 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 layer by embedding the thermally expandable microspheres in a coating layer by pressing or the like, and forming (laminating) a mooring layer on the adhesive layer, (2) the adhesive on the release film A method of forming a pressure-sensitive adhesive coating layer by applying a pressure-sensitive adhesive layer-forming composition containing an adhesive and thermally expandable microspheres, and forming (laminating) a mooring layer on the pressure-sensitive adhesive coating layer; After forming the pressure-sensitive adhesive coating layer on the mold film by forming the pressure-sensitive adhesive coating layer, a mooring layer is formed (laminated) on the pressure-sensitive adhesive coating layer, and then the release film is peeled off and the pressure-sensitive adhesive coating layer is formed.
- a method of embedding the thermally expandable microspheres by pressing or the like from the surface (adhesive surface) side opposite to the anchor layer (4) A method of forming a mooring layer on a release film, installing thermally expandable microspheres on one surface thereof, and further applying an adhesive on the installation surface.
- the pressure-sensitive adhesive layer can be formed by drying the pressure-sensitive adhesive coating layer, but the drying can be performed at any appropriate timing. The drying may be performed before or after embedding the thermally expandable microspheres. Further, it may be before or after the mooring layer 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 formed on the surface of the anchoring layer on the side opposite to the pressure-sensitive adhesive layer after the operations (1) to (4). Or it can obtain by sticking a base material through an adhesive.
- the laminated body of a base material and a mooring layer, and the laminated body of a release film and an adhesive layer (or adhesive coating layer) are produced separately, and these laminated bodies may be bonded together.
- the method for forming the anchoring layer (i) the polymer material or the resin material described in the above section B is heat-melted to obtain a film-shaped molded body by extrusion molding, and the molded body is converted into the pressure-sensitive adhesive layer (or Pressure-sensitive adhesive coating layer) or a method of laminating on a base material, (ii) a method of applying a resin solution containing the polymer material or resin material to the pressure-sensitive adhesive layer (or pressure-sensitive adhesive coating layer) or the base material, and then drying.
- a mooring layer forming composition containing a monomer, oligomer or macromer capable of forming the polymer material or resin material is applied to the pressure-sensitive adhesive layer (or pressure-sensitive adhesive coating layer) or substrate to form the mooring layer.
- a method of polymerizing the composition for example, polymerization by heating, active energy ray irradiation, etc.
- 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 product, and then the molded product is applied to the pressure-sensitive adhesive layer (or the pressure-sensitive adhesive coating). Layer) or a substrate.
- the anchoring layer forming composition is applied onto another release film, and then dried to form a anchoring layer precursor, which is then applied to the adhesive layer (or adhesive layer). Agent coating layer) or a substrate, and then polymerized.
- an epoxy such as 2,2- (4-hydroxyphenyl) propane diglycidyl ether, bis (4-hydroxyphenyl) methane, etc.
- a method of applying a mooring layer-forming composition containing a compound and any appropriate curing agent and then heating for example, 60 ° C. to 120 ° C. may be employed.
- a tether containing an isocyanate compound such as lylene diisocyanate and hexamethylene diisocyanate and a polyol compound such as polyether polyol and polyester polyol when forming a tether layer composed of a urethane polymer, a tether containing an isocyanate compound such as lylene diisocyanate and hexamethylene diisocyanate and a polyol compound such as polyether polyol and polyester polyol.
- a method of heating for example, 60 ° C. to 120 ° C.
- a tether layer composed of a vinyl polymer when a tether layer composed of a vinyl polymer is formed, a tether layer forming composition containing a vinyl compound such as vinyl chloride or styrene and any appropriate initiator is used. Can be.
- the mooring layer forming composition 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 adhesive sheet can be obtained by irradiation with active energy rays at any appropriate timing.
- 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 active energy rays can be set to any appropriate type and amount depending on the type of resin material constituting the anchoring layer.
- the surface of the pressure-sensitive adhesive layer 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 opposite to the adhesive surface of the adhesive layer.
- both surfaces of the pressure-sensitive adhesive sheet are flattened, and therefore the thickness of the pressure-sensitive adhesive layer 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 pressure-sensitive adhesive layer 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 to the mooring layer is clearly different is defined as the interface 1, and the distance from the interface 1 to the surface of the adhesive layer opposite to the interface 1 is the thickness of the adhesive layer, from the interface 1
- the distance to the surface of the anchoring layer opposite to the interface was taken as the thickness of the anchoring layer.
- 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. 5 shows an SEM image of the 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
- Table 1 shows the elastic modulus measured on the surface of the cut surface separated by about 3 ⁇ m from the surface (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 °
- Example 1 (Formation of adhesive layer 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.
- ultraviolet irradiation with an integrated light amount of 300 mJ / cm 2 was performed from the precursor layer side of the mooring layer using an ultraviolet irradiation machine “UM810 (high pressure mercury lamp light source)” (manufactured by Nitto Seiki Co., Ltd.). Thereafter, 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 layer thickness: 10 ⁇ m, anchoring layer thickness: 25 ⁇ m).
- Examples 2 to 15, Comparative Example 1 The type and amount of the polymer, crosslinking agent, tackifier, and thermally expandable microsphere when forming the pressure-sensitive adhesive layer precursor layer are set as shown in Table 1, and the polymer when forming the anchoring layer 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.
- Example 2 when the anchoring layer precursor layer was formed, instead of the polyethylene terephthalate film with a silicone release agent-treated surface, a PET film (thickness: 100 [mu] m) was applied to the mixed solution, and an adhesive sheet having a PET film (base material) was obtained without peeling off the PET film. Moreover, in Example 4 and Comparative Example 1, 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.
- T160 Yasuhara Chemical Co., Ltd., trade name “YS Polystar T160” ⁇ Thermal expandable microsphere>
- F-30D Matsumoto Yushi Seiyaku Co., Ltd., trade name “Matsumoto Microsphere F-30D”, foaming (expansion) start temperature: 70 ° C. to 80 ° C., maximum expansion temperature: 110 ° C. to 120 ° C., average particle size 10 ⁇ m to 18 ⁇ m
- F-65D Made by Matsumoto Yushi Seiyaku Co., Ltd., trade name “Matsumoto Microsphere F-65D”, foaming (expansion) start temperature: 105 ° C. to 115 ° C., maximum expansion temperature: 145 ° 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 Product name “purple light UV-3000B”, UV curable urethane acrylate M321: manufactured by Toa Gosei Co., Ltd., product name “Aronix M321”, trimethylolpropane PO-modified triacrylate (average added mole number 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 initi
- 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 layer 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 mooring layer with a hand roller.
- the pressure-sensitive adhesive sheet pressure-sensitive adhesive layer (thickness: 30 ⁇ m) / tether layer (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 Yasuhara 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.
- a mixed solvent of ethyl acetate and dimethylformamide (ethyl acetate) with a wire bar (10th) on one side of a polyethylene terephthalate film (Mega Resin Diafix (PG-CHI (FG, thickness 200 ⁇ m)) as a mooring layer : Dimethylformamide 1: 10 (volume%)), and the adhesive surface of the pressure-sensitive adhesive layer 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 layer (thickness: 40 ⁇ m) / tether layer (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.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
Abstract
Description
好ましい実施形態においては、上記粘着剤層が、該粘着剤層の厚みより大きい粒子径を有する熱膨張性微小球を含む。
好ましい実施形態においては、上記熱膨張性微小球の前記粘着剤層から突出している部分の高さが、0.4μm以上である。
好ましい実施形態においては、上記熱膨張性微小球が前記粘着剤層から突出している部分を含む所定領域での断面視において、該粘着剤層と上記係留層との界面の長さ(l1)と、該界面の厚み方向投影線の長さ(L)との比(l1/L)が、1.02以上である。
好ましい実施形態においては、上記熱膨張性微小球の平均粒子径が、6μm~45μmである。
好ましい実施形態においては、上記係留層の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。
好ましい実施形態においては、上記粘着剤層の厚みが、20μm以下である。
好ましい実施形態においては、加熱により上記熱膨張性微小球を膨張または発泡させた際の、上記粘着剤層の前記係留層とは反対側の面の表面粗さRaが、3μm以上である。
好ましい実施形態においては、上記粘着剤層の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以下である。
好ましい実施形態においては、上記係留層の前記粘着剤層とは反対側に、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、粘着剤層10と粘着剤層10の片側に配置された係留層20とを備える。粘着剤層10は、複数の熱膨張性微小球11を含む。実用的には、粘着剤層10は粘着剤12をさらに含む。少なくとも1つ以上の熱膨張性微小球11は、粘着剤層10から突出し、突出した熱膨張性微小球11は係留層20に係留されるように埋め込まれている。突出した熱膨張性微小球11が係留層20に埋め込まれていることにより、熱膨張性微小球11による凹凸の影響をなくすことができる。熱膨張性微小球11は、加熱により膨張または発泡し得る。図示していないが、粘着シートが実用に供されるまでの間、粘着剤層10上に剥離紙が配置されて粘着剤層10が保護されていてもよい。また、図示例においては、粘着剤層10と係留層20との界面1を明確に図示しているが、界面は目視、顕微鏡等で判別し難い界面であってもよい。目視、顕微鏡等で判別し難い界面は、例えば、各層の組成を分析して判別することができる(詳細は後述する)。
上記係留層の25℃におけるナノインデンテーション法による弾性率は、好ましくは1MPa以上であり、より好ましくは1MPa~5000MPaであり、さらに好ましくは1MPa~3500MPaであり、特に好ましくは1MPa~1000MPaであり、最も好ましくは10MPa~600MPaである。このような弾性率を示す層を有する粘着シートは、例えば、粘着剤層とは異なる材料で形成された係留層を形成することにより得ることができる。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。
上記粘着剤層は、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層を形成し、該粘着剤層上に係留層を形成(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層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係留層を形成(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係留層を形成(積層)し、次いで、離型フィルムを剥離し、粘着剤塗布層の係留層とは反対側の面(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)離型フィルム上に係留層を形成し、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、粘着剤塗布層を乾燥することにより、粘着剤層が形成され得るが、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、係留層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、係留層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、係留層および粘着剤層の厚みを測定した。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4に示す。係留層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、界面1から粘着剤層の該界面1とは反対側の面までの距離を粘着剤層の厚み、該界面1から係留層の該界面とは反対側の面までの距離を係留層の厚みとした。
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、界面1から粘着剤層の該界面1とは反対側の面までの距離を粘着剤層の厚み、該界面1から係留層の該界面とは反対側の面までの距離を係留層の厚みとした。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5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1~3、5、6および12~15においては上記(1)と同様の方法、実施例4、7~11、16、17および比較例1においては上記(2)と同様の方法で、粘着剤層と係留層との界面(すなわち突出した熱膨張性微小球の突出面を含む界面)を判別し、熱膨張性微小球の粘着剤層から突出している部分の高さを測定した。
実施例1~3、5、6および12~15においては上記(1)と同様の方法、実施例4、7~11、16、17および比較例1においては上記(2)と同様の方法で、粘着剤層と係留層との界面(すなわち突出した熱膨張性微小球の突出面を含む界面)を判別し、粘着剤層と係留層との界面の長さ(l1)、および該界面の厚み方向投影線の長さ(L)を測定した。表1中には、l1とLとの比(l1/L)を示す。
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、係留層について、切断面とはほぼ垂直をなす係留層の表面(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%未満を○、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)のシリコー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(8)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。
(粘着剤層前駆層の形成)
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層前駆層を形成した。
(係留層前駆層の形成)
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20μm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係留層前駆層を形成した。
(粘着シート1の形成)
上記粘着剤層前駆層と、係留層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、係留層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(粘着剤層の厚み:10μm、係留層の厚み:25μm)を得た。
粘着剤層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、係留層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、係留層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を得た。
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層前駆層を形成した。
係留層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層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(粘着剤層(厚み:30μm)/係留層(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層前駆層を形成した。
係留層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層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(粘着剤層(厚み:40μm)/係留層(ポリエチレンテレフタレート、厚み:200μm))を得た。
11 熱膨張性微小球
12 粘着剤
20 係留層
30 基材
100、200 粘着シート
Claims (11)
- 複数の熱膨張性微小球を含む粘着剤層と、該粘着剤層の片側に配置された係留層とを備え、
少なくとも1つ以上の熱膨張性微小球が該粘着剤層から突出し、
突出した該熱膨張性微小球が係留層に埋め込まれている、
粘着シート。 - 前記粘着剤層が、該粘着剤層の厚みより大きい粒子径を有する熱膨張性微小球を含む、請求項1に記載の粘着シート。
- 前記熱膨張性微小球の前記粘着剤層から突出している部分の高さが、0.4μm以上である、請求項1または2に記載の粘着シート。
- 前記熱膨張性微小球が前記粘着剤層から突出している部分を含む所定領域での断面視において、該粘着剤層と前記係留層との界面の長さ(l1)と、該界面の厚み方向投影線の長さ(L)との比(l1/L)が、1.02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。
- 前記熱膨張性微小球の平均粒子径が、6μm~45μmである、請求項1から4のいずれかに記載の粘着シート。
- 前記係留層の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、請求項1から5のいずれかに記載の粘着シート。
- 前記粘着剤層の厚みが、20μm以下である、請求項1から6のいずれかに記載の粘着シート。
- 加熱により前記熱膨張性微小球を膨張または発泡させた際の、前記粘着剤層の前記係留層とは反対側の面の表面粗さRaが、3μm以上である、請求項1から7のいずれかに記載の粘着シート。
- 前記粘着剤層の25℃におけるナノインデンテーション法による弾性率が、100MPa未満である、請求項1から8のいずれかに記載の粘着シート。
- 前記係留層の前記粘着剤層とは反対側に、基材をさらに備える、請求項1から9のいずれかに記載の粘着シート。
- 請求項1から10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。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015505526A JPWO2014142192A1 (ja) | 2013-03-15 | 2014-03-12 | 粘着シート |
CN201480016096.9A CN105051137A (zh) | 2013-03-15 | 2014-03-12 | 粘合片 |
KR1020157024751A KR102203019B1 (ko) | 2013-03-15 | 2014-03-12 | 점착 시트 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013053848 | 2013-03-15 | ||
JP2013-053848 | 2013-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014142192A1 true WO2014142192A1 (ja) | 2014-09-18 |
Family
ID=51536843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/056548 WO2014142192A1 (ja) | 2013-03-15 | 2014-03-12 | 粘着シート |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPWO2014142192A1 (ja) |
KR (1) | KR102203019B1 (ja) |
CN (1) | CN105051137A (ja) |
TW (1) | TWI659084B (ja) |
WO (1) | WO2014142192A1 (ja) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015029871A1 (ja) * | 2013-08-29 | 2015-03-05 | 三井化学東セロ株式会社 | 接着フィルムおよび半導体装置の製造方法 |
CN105647413A (zh) * | 2014-12-02 | 2016-06-08 | 日东电工株式会社 | 粘合片 |
JP2018009050A (ja) * | 2016-07-11 | 2018-01-18 | 日東電工株式会社 | 粘着シート |
WO2018139175A1 (ja) * | 2017-01-26 | 2018-08-02 | コニカミノルタ株式会社 | 機能性フィルム積層体、及び、機能性フィルム積層体の製造方法 |
US20180354229A1 (en) * | 2015-11-26 | 2018-12-13 | Bando Chemical Industries, Ltd. | Optical transparent adhesive sheet, method for producing optical transparent adhesive sheet, laminated body, and display device with touch panel |
JP2019002007A (ja) * | 2017-06-13 | 2019-01-10 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 熱剥離型接着部材及びそれを含む表示装置 |
JP2019536666A (ja) * | 2016-12-02 | 2019-12-19 | スリーエム イノベイティブ プロパティズ カンパニー | ポリマー多層材料及びその製造方法 |
CN110775940A (zh) * | 2019-10-31 | 2020-02-11 | 歌尔股份有限公司 | Mems传感器组件制造方法、以及以该法制造的mems传感器组件 |
US11466185B2 (en) | 2015-05-08 | 2022-10-11 | Bando Chemical Industries, Ltd. | Optical transparent adhesive sheet, method for producing optical transparent adhesive sheet, laminate and display device with touch panel |
US11530337B2 (en) | 2015-09-29 | 2022-12-20 | Bando Chemical Industries, Ltd. | Optically transparent pressure-sensitive adhesive sheet, laminate, process for producing laminate, and display device with touch panel |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6887766B2 (ja) * | 2016-07-19 | 2021-06-16 | 日東電工株式会社 | 粘着シート |
JP6761116B2 (ja) * | 2017-03-31 | 2020-09-23 | リンテック株式会社 | 半導体装置の製造方法及び粘着シート |
WO2018181766A1 (ja) * | 2017-03-31 | 2018-10-04 | リンテック株式会社 | 半導体装置の製造方法及び両面粘着シート |
JP7006661B2 (ja) * | 2019-06-14 | 2022-01-24 | カシオ計算機株式会社 | 造形物の製造方法及び造形装置 |
JP2022155610A (ja) * | 2021-03-31 | 2022-10-14 | 日東電工株式会社 | 粘着シート |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008053713A1 (fr) * | 2006-11-04 | 2008-05-08 | Nitto Denko Corporation | Feuille adhésive sensible à la pression et pelable sous l'action de la chaleur, et procédé de récupération de la surface adhésive |
WO2012118152A1 (ja) * | 2011-03-03 | 2012-09-07 | 日東電工株式会社 | 加熱剥離型粘着シート |
Family Cites Families (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 |
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 |
JP4428908B2 (ja) * | 2002-04-08 | 2010-03-10 | 日東電工株式会社 | 粘着シートを用いた被着体加工方法 |
JP4671815B2 (ja) * | 2005-09-05 | 2011-04-20 | 日東電工株式会社 | 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 |
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 |
-
2014
- 2014-03-12 KR KR1020157024751A patent/KR102203019B1/ko active IP Right Grant
- 2014-03-12 JP JP2015505526A patent/JPWO2014142192A1/ja active Pending
- 2014-03-12 WO PCT/JP2014/056548 patent/WO2014142192A1/ja active Application Filing
- 2014-03-12 CN CN201480016096.9A patent/CN105051137A/zh active Pending
- 2014-03-14 TW TW103109762A patent/TWI659084B/zh active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008053713A1 (fr) * | 2006-11-04 | 2008-05-08 | Nitto Denko Corporation | Feuille adhésive sensible à la pression et pelable sous l'action de la chaleur, et procédé de récupération de la surface adhésive |
WO2012118152A1 (ja) * | 2011-03-03 | 2012-09-07 | 日東電工株式会社 | 加熱剥離型粘着シート |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2015029871A1 (ja) * | 2013-08-29 | 2017-03-02 | 三井化学東セロ株式会社 | 接着フィルムおよび半導体装置の製造方法 |
US9822284B2 (en) | 2013-08-29 | 2017-11-21 | Mitsui Chemicals Tohcello, Inc. | Adhesive film and method for manufacturing semiconductor device |
WO2015029871A1 (ja) * | 2013-08-29 | 2015-03-05 | 三井化学東セロ株式会社 | 接着フィルムおよび半導体装置の製造方法 |
CN105647413B (zh) * | 2014-12-02 | 2020-09-15 | 日东电工株式会社 | 粘合片 |
CN105647413A (zh) * | 2014-12-02 | 2016-06-08 | 日东电工株式会社 | 粘合片 |
US11466185B2 (en) | 2015-05-08 | 2022-10-11 | Bando Chemical Industries, Ltd. | Optical transparent adhesive sheet, method for producing optical transparent adhesive sheet, laminate and display device with touch panel |
US11530337B2 (en) | 2015-09-29 | 2022-12-20 | Bando Chemical Industries, Ltd. | Optically transparent pressure-sensitive adhesive sheet, laminate, process for producing laminate, and display device with touch panel |
US20180354229A1 (en) * | 2015-11-26 | 2018-12-13 | Bando Chemical Industries, Ltd. | Optical transparent adhesive sheet, method for producing optical transparent adhesive sheet, laminated body, and display device with touch panel |
US11447662B2 (en) * | 2015-11-26 | 2022-09-20 | Bando Chemical Industries, Ltd. | Optical transparent adhesive sheet, method for producing optical transparent adhesive sheet, laminated body, and display device with touch panel |
JP2018009050A (ja) * | 2016-07-11 | 2018-01-18 | 日東電工株式会社 | 粘着シート |
JP2019536666A (ja) * | 2016-12-02 | 2019-12-19 | スリーエム イノベイティブ プロパティズ カンパニー | ポリマー多層材料及びその製造方法 |
JP7048184B2 (ja) | 2016-12-02 | 2022-04-05 | スリーエム イノベイティブ プロパティズ カンパニー | ポリマー多層材料及びその製造方法 |
WO2018139175A1 (ja) * | 2017-01-26 | 2018-08-02 | コニカミノルタ株式会社 | 機能性フィルム積層体、及び、機能性フィルム積層体の製造方法 |
JP7109270B2 (ja) | 2017-06-13 | 2022-07-29 | 三星ディスプレイ株式會社 | 熱剥離型接着部材及びそれを含む表示装置 |
JP2019002007A (ja) * | 2017-06-13 | 2019-01-10 | 三星ディスプレイ株式會社Samsung Display Co.,Ltd. | 熱剥離型接着部材及びそれを含む表示装置 |
US11491762B2 (en) | 2017-06-13 | 2022-11-08 | Samsung Display Co., Ltd. | Thermally releasable adhesive member and display apparatus including the same |
CN110775940A (zh) * | 2019-10-31 | 2020-02-11 | 歌尔股份有限公司 | Mems传感器组件制造方法、以及以该法制造的mems传感器组件 |
CN110775940B (zh) * | 2019-10-31 | 2023-08-15 | 潍坊歌尔微电子有限公司 | Mems传感器组件制造方法、以及以该法制造的mems传感器组件 |
Also Published As
Publication number | Publication date |
---|---|
KR20150127088A (ko) | 2015-11-16 |
CN105051137A (zh) | 2015-11-11 |
JPWO2014142192A1 (ja) | 2017-02-16 |
KR102203019B1 (ko) | 2021-01-14 |
TWI659084B (zh) | 2019-05-11 |
TW201441333A (zh) | 2014-11-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014142192A1 (ja) | 粘着シート | |
JP5801010B2 (ja) | 粘着シート | |
WO2014142193A1 (ja) | 粘着シート | |
JP6587811B2 (ja) | 熱剥離型粘着シート | |
KR102302043B1 (ko) | 점착 시트 | |
CN107629720B (zh) | 粘合片 | |
JP2018009049A (ja) | 粘着シート | |
JP6768038B2 (ja) | 粘着シート | |
JP2019199561A (ja) | 粘着シート | |
JP2021006635A (ja) | 粘着シート | |
JP2021006634A (ja) | 粘着シート | |
JP2020178013A (ja) | ダイシングダイボンドフィルム | |
JP7428473B2 (ja) | 電子部品の製造方法 | |
TWI824455B (zh) | 黏著片材 | |
WO2022153601A1 (ja) | 粘着シート |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201480016096.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14765253 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015505526 Country of ref document: JP Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 20157024751 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14765253 Country of ref document: EP Kind code of ref document: A1 |