WO2014203872A1 - 離型フィルム - Google Patents
離型フィルム Download PDFInfo
- Publication number
- WO2014203872A1 WO2014203872A1 PCT/JP2014/065957 JP2014065957W WO2014203872A1 WO 2014203872 A1 WO2014203872 A1 WO 2014203872A1 JP 2014065957 W JP2014065957 W JP 2014065957W WO 2014203872 A1 WO2014203872 A1 WO 2014203872A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- release
- layer
- release film
- resin
- film
- Prior art date
Links
- 239000010410 layer Substances 0.000 claims abstract description 98
- 229920001707 polybutylene terephthalate Polymers 0.000 claims abstract description 48
- 229920005989 resin Polymers 0.000 claims abstract description 44
- 239000011347 resin Substances 0.000 claims abstract description 44
- -1 polybutylene terephthalate Polymers 0.000 claims abstract description 34
- 239000002356 single layer Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 19
- 230000007547 defect Effects 0.000 abstract description 10
- 239000010408 film Substances 0.000 description 72
- 239000003795 chemical substances by application Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 16
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 13
- 229910052731 fluorine Inorganic materials 0.000 description 13
- 239000011737 fluorine Substances 0.000 description 13
- 238000011156 evaluation Methods 0.000 description 11
- 239000000835 fiber Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 229920001187 thermosetting polymer Polymers 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 229920001577 copolymer Polymers 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 229920006332 epoxy adhesive Polymers 0.000 description 6
- 238000007731 hot pressing Methods 0.000 description 6
- 230000037303 wrinkles Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 239000012787 coverlay film Substances 0.000 description 4
- 150000002009 diols Chemical class 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000002216 antistatic agent Substances 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229920001225 polyester resin Polymers 0.000 description 3
- 239000004645 polyester resin Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000012760 heat stabilizer Substances 0.000 description 2
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 239000012784 inorganic fiber Substances 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- VJQGGZWPOMJLTP-UHFFFAOYSA-N octadecane-1,1-diol Chemical compound CCCCCCCCCCCCCCCCCC(O)O VJQGGZWPOMJLTP-UHFFFAOYSA-N 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 2
- ZREORSWVGSDDPP-UHFFFAOYSA-N (4-nonylphenyl) dihydrogen phosphite Chemical compound CCCCCCCCCC1=CC=C(OP(O)O)C=C1 ZREORSWVGSDDPP-UHFFFAOYSA-N 0.000 description 1
- VCNJVIWFSMCZPE-UHFFFAOYSA-N 1,2,3,4,5-pentabromo-6-prop-2-enoxybenzene Chemical compound BrC1=C(Br)C(Br)=C(OCC=C)C(Br)=C1Br VCNJVIWFSMCZPE-UHFFFAOYSA-N 0.000 description 1
- DEIGXXQKDWULML-UHFFFAOYSA-N 1,2,5,6,9,10-hexabromocyclododecane Chemical compound BrC1CCC(Br)C(Br)CCC(Br)C(Br)CCC1Br DEIGXXQKDWULML-UHFFFAOYSA-N 0.000 description 1
- JLZIIHMTTRXXIN-UHFFFAOYSA-N 2-(2-hydroxy-4-methoxybenzoyl)benzoic acid Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1C(O)=O JLZIIHMTTRXXIN-UHFFFAOYSA-N 0.000 description 1
- FQKYTBQZPFRTDH-UHFFFAOYSA-N 2-hydroxy-1-phenylbutan-1-one Chemical compound CCC(O)C(=O)C1=CC=CC=C1 FQKYTBQZPFRTDH-UHFFFAOYSA-N 0.000 description 1
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000005062 Polybutadiene Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 229920006311 Urethane elastomer Polymers 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- DXZIFGZIQQRESB-UHFFFAOYSA-N [C].[Ti].[Si] Chemical compound [C].[Ti].[Si] DXZIFGZIQQRESB-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 150000003973 alkyl amines Chemical class 0.000 description 1
- 150000008052 alkyl sulfonates Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- AGXUVMPSUKZYDT-UHFFFAOYSA-L barium(2+);octadecanoate Chemical compound [Ba+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O AGXUVMPSUKZYDT-UHFFFAOYSA-L 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- PWWSSIYVTQUJQQ-UHFFFAOYSA-N distearyl thiodipropionate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCCCCCC PWWSSIYVTQUJQQ-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- DXGLGDHPHMLXJC-UHFFFAOYSA-N oxybenzone Chemical compound OC1=CC(OC)=CC=C1C(=O)C1=CC=CC=C1 DXGLGDHPHMLXJC-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 229960001860 salicylate Drugs 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- RYYKJJJTJZKILX-UHFFFAOYSA-M sodium octadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC([O-])=O RYYKJJJTJZKILX-UHFFFAOYSA-M 0.000 description 1
- 229940045870 sodium palmitate Drugs 0.000 description 1
- GGXKEBACDBNFAF-UHFFFAOYSA-M sodium;hexadecanoate Chemical compound [Na+].CCCCCCCCCCCCCCCC([O-])=O GGXKEBACDBNFAF-UHFFFAOYSA-M 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- NECLQTPQJZSWOE-UHFFFAOYSA-N spiro[5.5]undecane Chemical compound C1CCCCC21CCCCC2 NECLQTPQJZSWOE-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- LVEOKSIILWWVEO-UHFFFAOYSA-N tetradecyl 3-(3-oxo-3-tetradecoxypropyl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCCC LVEOKSIILWWVEO-UHFFFAOYSA-N 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- MZHULIWXRDLGRR-UHFFFAOYSA-N tridecyl 3-(3-oxo-3-tridecoxypropyl)sulfanylpropanoate Chemical compound CCCCCCCCCCCCCOC(=O)CCSCCC(=O)OCCCCCCCCCCCCC MZHULIWXRDLGRR-UHFFFAOYSA-N 0.000 description 1
- IVIIAEVMQHEPAY-UHFFFAOYSA-N tridodecyl phosphite Chemical compound CCCCCCCCCCCCOP(OCCCCCCCCCCCC)OCCCCCCCCCCCC IVIIAEVMQHEPAY-UHFFFAOYSA-N 0.000 description 1
- JZZBTMVTLBHJHL-UHFFFAOYSA-N tris(2,3-dichloropropyl) phosphate Chemical compound ClCC(Cl)COP(=O)(OCC(Cl)CCl)OCC(Cl)CCl JZZBTMVTLBHJHL-UHFFFAOYSA-N 0.000 description 1
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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the subgroups H01L21/06 - H01L21/326, e.g. sealing of a cap to a base of a container
- H01L21/56—Encapsulations, e.g. encapsulation layers, coatings
- H01L21/565—Moulds
- H01L21/566—Release layers for moulds, e.g. release layers, layers against residue during moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents
- B29C33/68—Release sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/006—PBT, i.e. polybutylene terephthalate
Definitions
- the present invention relates to a release film that is excellent in releasability, can suppress resin flow even under high-temperature molding conditions, and can suppress defects in product appearance.
- a semiconductor mold process is performed in which a semiconductor chip is sealed with a resin using a mold to obtain a molded product.
- this semiconductor molding process by performing resin molding in a state where the inner surface of the mold is covered with a release film, productivity is improved and contamination of the mold by the resin is prevented.
- fluorine-based films have been generally used as mold release films for semiconductor mold processes, but there are cost problems, wrinkles due to heat shrinkage, and environmental aspects that incineration cannot be performed because fluorine-based gas is generated when discarded. Thus, there is a need for a new release film that does not use a fluorine-based film as a substrate.
- Patent Document 1 describes a release sheet for a semiconductor package that includes at least two layers of a release layer (A layer) and a layer that bears heat resistance against heating during molding (B layer), and the B layer is unstretched.
- a layer a release layer
- B layer a layer that bears heat resistance against heating during molding
- nylon 6 resin has a drawback that it is not suitable for long-term storage because of its high hygroscopicity.
- Patent Document 2 describes a laminated film in which a film made of a fluororesin is laminated on at least one surface of a base film made of a stretched polyester resin film.
- a release film having a stretched polyester resin film as a support layer as described in Patent Document 2 when a predetermined amount of resin is injected under a high temperature condition where molding is performed, the resin is outside the mold. It sometimes overflowed.
- An object of the present invention is to provide a release film that is excellent in releasability, suppresses resin flow even under high-temperature molding conditions, and can suppress defects in product appearance.
- the present invention is a release film having a single layer structure or a multilayer structure support layer having at least one layer containing a polybutylene terephthalate resin, and a release layer.
- the present invention is described in detail below.
- the release film of the present invention has a support layer having a single layer structure or a multilayer structure having at least one PBT layer. Since the support layer has a PBT layer, the release film of the present invention is highly flexible under high-temperature molding conditions and can exhibit sufficient followability to the mold. Can be suppressed, and defects in the appearance of the product can be suppressed. In addition, by using the PBT layer, the release film of the present invention is economically advantageous because the environmental load during incineration treatment is reduced as compared with the case of using a fluorine-based film. Furthermore, since PBT is a resin having a small amount of low molecular weight components, contamination of a mold or the like due to bleed out of the low molecular weight components accompanying hot pressing can be suppressed.
- the polybutylene terephthalate resin is a polybutylene terephthalate obtained by polycondensation reaction between 1,4-butanediol (diol component) and terephthalic acid or dimethyl terephthalate (acid component). It may be a modified polybutylene terephthalate obtained by adding a comonomer to the diol component and / or the acid component, respectively, and performing a polycondensation reaction.
- the comonomer of the diol component include ethylene glycol, propylene glycol, tetramethylene glycol, and cyclohexanedimethanol.
- the acid component comonomer examples include isophthalic acid, adipic acid, and sebacic acid.
- the comonomer of the diol component and the comonomer of the acid component may be used alone or in combination of two or more.
- the polybutylene terephthalate resin (PBT) can also be a PBT elastomer (copolymer of hard segment and soft segment) such as a copolymer of polybutylene terephthalate and polyalkylene glycol.
- the PBT layer may contain each of the polybutylene terephthalate, modified polybutylene terephthalate, and PBT elastomer alone, or may contain two or more of these in combination.
- the PBT preferably has a melting point of 200 ° C. or higher measured using a differential scanning calorimeter.
- a polybutylene terephthalate resin having a melting point of 200 ° C. or more, it is not melted or broken under normal hot press conditions of less than 200 ° C., and excellent release properties can be exhibited.
- the melting point is more preferably 220 ° C. or higher.
- An example of the differential scanning calorimeter is DSC 2920 (manufactured by TA Instruments).
- the minimum with preferable content of PBT in the said PBT layer is 60 weight%, More preferably, it is 70 weight%, More preferably, it is 80 weight%.
- the PBT layer contains PBT in an amount of 60% by weight or more, the excellent effect of the present invention that suppresses the flow of the resin even under high temperature molding conditions and suppresses the defective appearance of the product can be surely exhibited.
- the upper limit of the content of the polybutylene terephthalate resin is not particularly limited, and 100% by weight may be a polybutylene terephthalate resin.
- the PBT layer may contain a thermoplastic resin or a rubber component other than the polybutylene terephthalate resin as long as the effects of the present invention are not impaired.
- the thermoplastic resin is not particularly limited, and examples thereof include polyolefin, modified polyolefin, polystyrene, polyvinyl chloride, polyamide, polycarbonate, polysulfone, and polyester.
- the rubber component is not particularly limited.
- natural rubber for example, natural rubber, styrene-butadiene copolymer, polybutadiene, polyisoprene, acrylonitrile-butadiene copolymer, ethylene-propylene copolymer (EPM, EPDM), polychloroprene, butyl rubber , Acrylic rubber, silicon rubber, urethane rubber and the like.
- the PBT layer may contain additives such as stabilizers, fibers, inorganic fillers, flame retardants, ultraviolet absorbers, antistatic agents, inorganic substances, higher fatty acid salts and the like as long as the effects of the present invention are not impaired. .
- the said stabilizer is not specifically limited, For example, a hindered phenolic antioxidant, a heat stabilizer, etc. are mentioned.
- the hindered phenol antioxidant is not particularly limited.
- Examples include spiro [5,5] undecane.
- the heat stabilizer is not particularly limited, and examples thereof include tris (2,4-di-t-butylphenyl) phosphite, trilauryl phosphite, 2-t-butyl- ⁇ - (3-t-butyl-4- Hydroxyphenyl) -p-cumenylbis (p-nonylphenyl) phosphite, dimyristyl 3,3′-thiodipropionate, distearyl 3,3′-thiodipropionate, pentaerythryltetrakis (3-laurylthiopropio) Nate) and ditridecyl 3,3′-thiodipropionate.
- the fiber may be an inorganic fiber or an organic fiber.
- the inorganic fiber is not particularly limited, and examples thereof include glass fiber, carbon fiber, boron fiber, silicon carbide fiber, alumina fiber, amorphous fiber, and silicon-titanium-carbon fiber.
- the said organic fiber is not specifically limited, For example, an aramid fiber etc. are mentioned.
- the inorganic filler is not particularly limited, and examples thereof include calcium carbonate, titanium oxide, mica and talc.
- the flame retardant is not particularly limited, and examples thereof include hexabromocyclododecane, tris- (2,3-dichloropropyl) phosphate, pentabromophenyl allyl ether, and the like.
- the ultraviolet absorber is not particularly limited, and examples thereof include pt-butylphenyl salicylate, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-2′-carboxybenzophenone, 2,4,5-tri And hydroxybutyrophenone.
- the antistatic agent is not particularly limited, and examples thereof include N, N-bis (hydroxyethyl) alkylamine, alkylallyl sulfonate, and alkyl sulfonate.
- the inorganic material is not particularly limited, and examples thereof include barium sulfate, alumina, and silicon oxide.
- the higher fatty acid salt is not particularly limited, and examples thereof include sodium stearate, barium stearate, and sodium palmitate.
- the release film support layer of the present invention When the release film support layer of the present invention is a film having a plurality of layers, it may have an intermediate layer.
- the layer containing the polybutylene terephthalate resin is preferably in the outermost layer on the side opposite to the release layer.
- the intermediate layer preferably contains a polyolefin resin.
- the polyolefin resin include polyethylene, low density polyethylene, linear low density polyethylene, polypropylene, ethylene-methyl methacrylate copolymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene- An acrylic acid copolymer etc. are mentioned. These polyethylene resins may be used alone or in combination of two or more.
- middle layer may contain additives, such as a fiber, an inorganic filler, a flame retardant, a ultraviolet absorber, an antistatic agent, an inorganic substance, and a higher fatty acid salt similarly to the said surface
- the support layer may be a non-stretched resin layer or a stretched resin layer.
- the non-stretched resin layer may be used.
- a layer is preferred.
- the stretch ratio is preferably 3 times or less, more preferably 2 times or less, and further preferably 1.5 times or less.
- non-stretched resin layer means that the raw sheet extruded from the die by the extruder is not subjected to a heat stretching process by a stretching device.
- the release film preferably has a satin finish on one side or both sides.
- the mold release layer side is satin-finished.
- the satin finish means forming fine irregularities on the surface of the release film. Since one side or both sides of the release film has been satin-finished, the satin-like shape is shaped on the surface of the molded product, making it difficult to see the resin flow pattern (flow mark), and deteriorating the appearance of the molded product. Can be suppressed.
- surface or both surfaces of a support layer may be satin processed. Even when the release layer side of the support layer is satin-finished, fine irregularities can be formed in the same manner as when the release layer itself is satin-finished.
- the release film preferably has a ten-point average roughness Rz of 3.0 or more on the textured surface. If the ten-point average roughness Rz is less than 3.0, the appearance of the molded product may be deteriorated due to the resin flow pattern (flow mark).
- the ten-point average roughness Rz is more preferably 5.0 or more.
- the upper limit of the ten-point average roughness Rz is not particularly limited, but is preferably 15.0 or less. When the ten-point average roughness Rz exceeds 15.0, the release property of the release film may be deteriorated.
- the ten-point average roughness Rz is more preferably 15.0 or less.
- the ten-point average roughness of the surface means that the altitude of the peak from the highest peak to the fifth highest in the reference length L is Y p1 , Y p2 , Y p3 , Y p4 and Y p5 , and the deepest valley bottom.
- Examples of the surface roughness meter include Permeter M1 (manufactured by Mahr).
- the method of carrying out a satin finish processing to the said release film is not specifically limited, The method of processing by heating and pressurizing the formed release film with the roll which has an embossed shape is preferable.
- the thickness of the said support layer is not specifically limited, A preferable minimum is 10 micrometers and a preferable upper limit is 200 micrometers.
- a preferable minimum is 10 micrometers and a preferable upper limit is 200 micrometers.
- the thickness of the support layer is less than 10 ⁇ m, the strength is impaired, and the release film may be broken during hot pressing or peeling.
- the thickness of the support layer exceeds 200 ⁇ m, the flexibility of the release film under high-temperature molding conditions is lowered, the followability to the mold is lowered, and the resin flow may not be suppressed.
- a more preferable lower limit of the thickness of the support layer is 30 ⁇ m, and a more preferable upper limit is 100 ⁇ m.
- the release film of the present invention has a release layer.
- the release layer is not particularly limited as long as it can exhibit releasability, but a layer formed by applying a release agent and thermosetting or ultraviolet curing as necessary is preferable.
- the release agent include thermosetting release agents such as fluorine and amino alkyd, and ultraviolet curable release agents such as urethane acrylate.
- a fluorine-based mold release agent is preferable because it exhibits particularly excellent mold release properties with respect to the mold resin.
- the fluorine-based mold release agent is not particularly limited.
- MR W-6823-AL, MR W-6833-AL, MR W-684-AL, MR W-6881-AL, MR F-6441-AL, MR F-6711-AL, MR F-6758-AL, MR F-6811-AL, MR EF-6521-AL, MR K-6714-AL, MR X-6712-AL (above, manufactured by AGC Sey Chemical) F-release 600, F-release 360, F-release 390, F-release 1200, F-release 1300, F-release 1900, F-release 351, F-release 380, F-release 450, F-release 11F, F-release 50GA, F-release 20, F-release 22, F-release 23, F-release 26, F-release 800, F-release 410, Release 430, FRX-AS24, Release 44, Release PH206, Release PH300, FRX-AZ15 (above, manufactured by Neos
- the aminoalkyd release agent is not limited, and examples thereof include Tesfine 303, Tesfine 305, Tesfine 314, Tesfine 319, TA31-209E (above, manufactured by Hitachi Chemical Co., Ltd.) and the like.
- the urethane acrylate release agent is not particularly limited, and examples thereof include TA37-400A, TA37-400B, TA37-400C, TA37-401A, TA37-401B, TA37-401C (above, manufactured by Hitachi Chemical Co., Ltd.). .
- the thickness of the release layer is not particularly limited, but a preferable lower limit is 0.1 ⁇ m and a preferable upper limit is 10 ⁇ m.
- a preferable lower limit is 0.1 ⁇ m and a preferable upper limit is 10 ⁇ m.
- the thickness of the release layer is less than 0.1 ⁇ m, the release property of the release layer may not be sufficiently exhibited.
- the thickness of the release layer exceeds 10 ⁇ m, the cost becomes high, and problems such as poor drying in the coating process may occur depending on the type of the release agent.
- a more preferable lower limit of the thickness of the release layer is 0.3 ⁇ m, and a more preferable upper limit is 5 ⁇ m.
- the preferable lower limit of the elastic modulus at 170 ° C. of the release film is 20 MPa, and the preferable upper limit is 150 MPa.
- the release film has an elastic modulus at 170 ° C. of less than 20 MPa, wrinkles occur in the release film during adsorption to the mold or during hot pressing, and the wrinkles are transferred to a molded product or released during hot pressing. The film may be torn.
- the elastic modulus at 170 ° C. of the release film exceeds 150 MPa, the flexibility of the release film under high-temperature molding conditions is lowered, the followability to the mold is lowered, and the resin flow may not be suppressed.
- the more preferable lower limit of the elastic modulus at 170 ° C. of the release film is 40 MPa, and the more preferable upper limit is 70 MPa.
- the elastic modulus at 170 ° C. can be measured by using a universal testing machine (for example, AUTOGRAPH AGS-X manufactured by Shimadzu Corporation).
- the method for producing the release film of the present invention is not particularly limited, but a release agent is applied to the formed support layer, heat-cured or UV-cured as necessary, and then heated with a roll having an embossed shape. -A method of processing by pressurization is preferred.
- Examples of the method for forming the support layer include a method of forming a film by a water-cooled or air-cooled coextrusion inflation method and a coextrusion T-die method.
- the method of forming into a film by a coextrusion T-die method is preferable.
- the release film of the present invention is preferably used in the semiconductor molding process to improve the productivity by coating the inner surface of the mold and prevent the mold from being contaminated by the resin.
- the use of the release film of the present invention is not limited to the above-mentioned use.
- a copper-clad laminate or a copper foil is hot-pressed on a substrate via a prepreg or a heat-resistant film, and a printed wiring board, a flexible printed board, or a multilayer is used.
- a printed wiring board When manufacturing a printed wiring board, it may be used to prevent adhesion between the heat-pressed board and the obtained printed wiring board, flexible printed board or multilayer printed wiring board, or via a thermosetting adhesive
- a cover lay film When a cover lay film is bonded to a substrate on which a copper circuit is formed by hot pressing to manufacture a flexible printed circuit board, the bonding between the hot pressing plate and the cover lay film or the bonding between the cover lay films is prevented. May be used.
- the mold release film which can be excellent in mold release property, can suppress the outflow of resin also on high temperature molding conditions, and can suppress the defect of a product external appearance can be provided.
- Example 1 A mixed resin of 75 parts by weight of polybutylene terephthalate (PBT) and 25 parts by weight of a PBT elastomer (a copolymer of polybutylene terephthalate and polytetramethylene glycol) was extruded into a extruder (GM Engineering Co., Ltd., GM30-28 (screw diameter 30 mm). L / D28)) and extruded at a T die width of 400 mm to form a support layer. A thermosetting type fluorine-based release agent was applied to the obtained support layer and thermally cured to form a release layer having a thickness of 0.3 ⁇ m.
- PBT polybutylene terephthalate
- a PBT elastomer a copolymer of polybutylene terephthalate and polytetramethylene glycol
- the elastic modulus at 170 ° C. was measured using AUTOGRAPH AGS-X (manufactured by Shimadzu Corporation).
- Examples 2 to 12 As shown in Tables 1 and 2, a release film was obtained in the same manner as in Example 1 except that the presence or absence of the satin finish, the Rz value, and the release agent of the release layer were changed.
- Comparative Example 2 A commercially available fluorine-based release film (ETFE, unstretched, “Aflex” manufactured by Asahi Glass Co., Ltd.) with a concavo-convex process on both sides with a thickness of 50 ⁇ m is used as a support layer, and the support layer contains (HMDI) and octadecanediol.
- a release agent made of urethane acrylate was applied and thermally cured to form a release layer having a thickness of 0.3 ⁇ m to obtain a release film.
- Example 3 Using a commercially available polyethylene terephthalate film (PET, “Lumirror 38F99” manufactured by Toray Industries, Inc.) with a concavo-convex surface on one side having a thickness of 38 ⁇ m as a support layer, the support layer is made of urethane acrylate containing (HMDI) and octadecanediol. A release agent having a thickness of 3 ⁇ m was formed by applying a release agent and thermosetting to obtain a release film.
- PET polyethylene terephthalate film
- HMDI urethane acrylate containing
- Example 13 Polybutylene terephthalate (PBT) was extruded at a T die width of 400 mm using an extruder (GM Engineering Co., Ltd., GM30-28 (screw diameter 30 mm, L / D28)) to form a support layer.
- a thermosetting type fluorine-based release agent was applied to the obtained support layer and thermally cured to form a release layer having a thickness of 0.3 ⁇ m.
- the elastic modulus at 170 ° C. was measured using AUTOGRAPH AGS-X (manufactured by Shimadzu Corporation).
- Example 14 to 24 As shown in Tables 3 and 4, a release film was obtained in the same manner as in Example 1 except that the presence or absence of the satin finish, the Rz value, and the release agent of the release layer were changed.
- Example 25 A mixed resin of 75 parts by weight of polybutylene terephthalate (PBT) and 25 parts by weight of a PBT elastomer (a copolymer of polybutylene terephthalate and polytetramethylene glycol) was extruded using a GM30-28 manufactured by GM Engineering (screw diameter 30 mm, L / D28)) was extruded at a T die width of 400 mm to form a support layer. A thermosetting type fluorine-based release agent was applied to the obtained support layer and thermally cured to form a release layer having a thickness of 0.3 ⁇ m.
- PBT polybutylene terephthalate
- a PBT elastomer a copolymer of polybutylene terephthalate and polytetramethylene glycol
- the elastic modulus at 170 ° C. was measured using AUTOGRAPH AGS-X (manufactured by Shimadzu Corporation).
- Examples 26 to 35 As shown in Table 5, a release film was obtained in the same manner as in Example 1 except that the presence or absence of the satin finish, the Rz value, and the release agent of the release layer were changed.
- Example 36 Polybutylene terephthalate (PBT) was extruded using a extruder (GM 30-28, GM30-28 (screw diameter 30 mm, L / D28)) at a T die width of 400 mm, and a longitudinal stretcher and a transverse stretcher 2 were used.
- the support layer was formed by stretching three times by axial stretching.
- a thermosetting type fluorine-based release agent was applied to the obtained support layer and thermally cured to form a release layer having a thickness of 0.3 ⁇ m.
- Examples 37 to 39 As shown in Table 6, a release film was obtained in the same manner as in Example 1 except that the presence or absence of the stretching treatment, the presence or absence of the satin finish, the Rz value, and the release agent of the release layer were changed.
- the mold release film which can be excellent in mold release property, can suppress the outflow of resin also on high temperature molding conditions, and can suppress the defect of a product external appearance can be provided.
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Abstract
Description
しかしながら、特許文献2に記載されるような延伸ポリエステル樹脂フィルムを支持層とする離型フィルムを用いると、成型が行われる高温条件で所定量の樹脂を注入したとき、金型の外側に樹脂が溢れ出すことがあった。
以下に本発明を詳述する。
上記支持層がPBT層を有することにより、本発明の離型フィルムは、高温の成型条件における柔軟性が高くなり、金型に対して充分な追従性を発現することができることから、樹脂の流れ出しを抑制し、製品外観の不良を抑制することができる。また、PBT層を用いることにより、本発明の離型フィルムは、フッ素系フィルムを用いた場合に比べて焼却処理する際の環境負荷が軽減され、経済的にも有利である。更に、PBTは低分子量成分が少ない樹脂であることから、熱プレスに伴う低分子量成分のブリードアウトによる金型等の汚染を抑制することができる。
上記ジオール成分のコモノマーとしてはエチレングリコール、プロピレングリコール、テトラメチレングリコール、シクロヘキサンジメタノール等が挙げられる。上記酸成分のコモノマーとしてはイソフタル酸、アジピン酸、セバシン酸等が挙げられる。ジオール成分のコモノマーおよび酸成分のコモノマーはそれぞれ単独で用いてもよいし、2種以上を併用してもよい。
また、上記ポリブチレンテレフタレート樹脂(PBT)は、ポリブチレンテレフタレートとポリアルキレングリコールとの共重合体等のPBTエラストマー(ハードセグメントとソフトセグメントの共重合物)も用いることができる。
上記PBT層は、上記ポリブチレンテレフタレート、変性ポリブチレンテレフタレート、PBTエラストマーのそれぞれを単独で含有してもよく、これらの2種以上を組み合わせて含有してもよい。
なお、示差走査熱量計として、例えば、DSC 2920(TAインスツルメント社製)等が挙げられる。
上記熱可塑性樹脂は特に限定されず、例えば、ポリオレフィン、変性ポリオレフィン、ポリスチレン、ポリ塩化ビニル、ポリアミド、ポリカーボネート、ポリスルフォン、ポリエステル等が挙げられる。
上記ゴム成分は特に限定されず、例えば、天然ゴム、スチレン-ブタジエン共重合体、ポリブタジエン、ポリイソプレン、アクリルニトリル-ブタジエン共重合体、エチレン-プロピレン共重合体(EPM、EPDM)、ポリクロロプレン、ブチルゴム、アクリルゴム、シリコンゴム、ウレタンゴム等が挙げられる。
上記難燃剤は特に限定されず、例えば、ヘキサブロモシクロドデカン、トリス-(2,3-ジクロロプロピル)ホスフェート、ペンタブロモフェニルアリルエーテル等が挙げられる。
上記紫外線吸収剤は特に限定されず、例えば、p-t-ブチルフェニルサリシレート、2-ヒドロキシ-4-メトキシベンゾフェノン、2-ヒドロキシ-4-メトキシ-2’-カルボキシベンゾフェノン、2,4,5-トリヒドロキシブチロフェノン等が挙げられる。
上記帯電防止剤は特に限定されず、例えば、N,N-ビス(ヒドロキシエチル)アルキルアミン、アルキルアリルスルホネート、アルキルスルファネート等が挙げられる。
上記無機物は特に限定されず、例えば、硫酸バリウム、アルミナ、酸化珪素等が挙げられる。
上記高級脂肪酸塩は特に限定されず、例えば、ステアリン酸ナトリウム、ステアリン酸バリウム、パルミチン酸ナトリウム等が挙げられる。
上記中間層は、ポリオレフィン系樹脂を含有することが好ましい。
上記ポリオレフィン系樹脂としては、例えば、ポリエチレン、低密度ポリエチレン、直鎖状低密度ポリエチレン、ポリプロピレン、エチレン-メチルメタクリレート共重合体、エチレン-酢酸ビニル共重合体、エチレン-エチルアクリレート共重合体、エチレン-アクリル酸共重合体等が挙げられる。これらのポリエチレン樹脂は単独で用いてもよく、2種類以上を併用してもよい。
上記中間層は、上記表層と同様に、繊維、無機充填剤、難燃剤、紫外線吸収剤、帯電防止剤、無機物、高級脂肪酸塩等の添加剤を含有してもよい。
なお、本明細書中、無延伸樹脂層であるとは、押出し機によりダイから押出された原反シートに対し、延伸装置による熱延伸処理が施されていないことを意味する。
上記離型フィルムの片面又は両面が梨地加工されていることで、梨地形状が成型品表面に賦型されるため、樹脂の流れ模様(フローマーク)が見えにくくなり、成型品の外観の悪化を抑制することができる。
なお、離型層の厚さは非常に薄いため、上記離型フィルムは、支持層の片面又は両面が梨地加工されていてもよい。支持層の離型層側が梨地加工されている場合でも、離型層自体に梨地加工されている場合と同様に微細な凹凸を形成できる。
また、上記十点平均粗さRzの上限は特に限定されないが、15.0以下であることが好ましい。上記十点平均粗さRzが15.0を超えると、離型フィルムの離型性が低下してしまうことがある。上記十点平均粗さRzは15.0以下であることがより好ましい。
上記離型層は、離型性を発現することができれば特に限定されないが、離型剤を塗布し、必要に応じて熱硬化又は紫外線硬化させることで形成された層が好ましい。上記離型剤として、例えば、フッ素系、アミノアルキド系等の熱硬化タイプの離型剤、ウレタンアクリレート系等の紫外線硬化タイプの離型剤等が挙げられる。なかでも、モールド樹脂に対して特に優れた離型性を発揮することから、フッ素系離型剤が好ましい。
上記アミノアルキド系離型剤は限定されず、例えば、テスファイン303、テスファイン305、テスファイン314、テスファイン319、TA31-209E(以上、日立化成社製)等が挙げられる。
上記ウレタンアクリレート系離型剤は特に限定されず、例えば、TA37-400A、TA37-400B、TA37-400C、TA37-401A、TA37-401B、TA37-401C(以上、日立化成社製)等が挙げられる。
なお、本明細書中、170℃における弾性率は、万能試験機(例えば、島津製作所社製のAUTOGRAPH AGS-X等)を使用することにより測定することができる。
上記支持層を製膜する方法は、例えば、水冷式又は空冷式共押出インフレーション法、共押出Tダイ法で製膜する方法等が挙げられる。なかでも、上記支持層が多層である場合には、各層の厚み制御に優れることから、共押出Tダイ法で製膜する方法が好ましい。
ただし、本発明の離型フィルムの用途は上記用途に限定されず、例えば、プリプレグ又は耐熱フィルムを介して基板に銅張積層板又は銅箔を熱プレスし、プリント配線基板、フレキシブルプリント基板又は多層プリント配線板を製造する際に、熱プレス板と、得られたプリント配線基板、フレキシブルプリント基板又は多層プリント配線板との接着を防ぐために用いられてもよいし、熱硬化性接着剤を介して、銅回路を形成した基板にカバーレイフィルムを熱プレスにより接着し、フレキシブルプリント基板を製造する際に、熱プレス板と上記カバーレイフィルムとの接着、又は、上記カバーレイフィルム同士の接着を防ぐために用いられてもよい。
ポリブチレンテレフタレート(PBT)75重量部と、PBTエラストマー(ポリブチレンテレフタレートとポリテトラメチレングリコールとの共重合物)25重量部の混合樹脂を押出機(ジーエムエンジニアリング社製、GM30-28(スクリュー径30mm、L/D28))を用いてTダイ幅400mmにて押出し、支持層を形成した。
得られた支持層に熱硬化タイプのフッ素系離型剤を塗布し、熱硬化させることで厚さ0.3μmの離型層を形成した。
更に、エンボス形状を有するロールにより、両面が梨地加工(離型層の表面十点平均粗さRz=12μm)された厚さ50μmの離型フィルムを得た。
なお、170℃における弾性率を、AUTOGRAPH AGS-X(島津製作所社製)を用いて測定した。
表1、2のように、梨地加工の有無、Rz値、離型層の離型剤を変更したこと以外は実施例1と同様にして離型フィルムを得た。
市販の厚さ50μmの両面に凹凸加工が施されたフッ素系離型フィルム(テトラフルオロエチレン-エチレン共重合体(ETFE)、無延伸、旭硝子社製「アフレックス」)を離型フィルムとして用いた。
市販の厚さ50μmの両面に凹凸加工が施されたフッ素系離型フィルム(ETFE、無延伸、旭硝子社製「アフレックス」)を支持層として、該支持層に(HMDI)とオクタデカンジオールを含有するウレタンアクリレートからなる離型剤を塗布し、熱硬化させることで厚さ0.3μmの離型層を形成して、離型フィルムを得た。
市販の厚さ38μmの片面に凹凸加工が施されたポリエチレンテレフタレートフィルム(PET、東レ社製「ルミラー38F99」)を支持層として、該支持層に(HMDI)とオクタデカンジオールを含有するウレタンアクリレートからなる離型剤を塗布し、熱硬化させることで厚さ3μmの離型層を形成して、離型フィルムを得た。
ポリブチレンテレフタレート(PBT)を押出機(ジーエムエンジニアリング社製、GM30-28(スクリュー径30mm、L/D28))を用いてTダイ幅400mmにて押出して、厚さ50μmの離型フィルムを得た。
実施例及び比較例で得られた離型フィルムについて下記の評価を行った。結果を表1、2に示した。
離型フィルムの離型層側とエポキシ接着シートとを重ね、170℃、220kNで2分間熱プレスした後、試験速度500mm/分で180°剥離試験を行った。下記の基準で評価した。
◎:剥離力が0gf/cm(自然剥離)
〇:剥離力が0gf/cmを超えるが3.0gf/cm未満
×:剥離力が3.0gf/cm以上
銅貼積層板(CCLともいう)上にφ=1mmの穴を空けたカバーレイフィルム(エポキシ接着剤層を有するもの)を載せ、更に、離型フィルムを積層して170℃、220kNで2分間熱プレスした。このとき、穴部に流れ出したエポキシ接着剤の距離を光学顕微鏡にて観察しながら測定した。下記の基準で評価した。
◎:流れ出したエポキシ接着剤の距離が60μm未満
〇:流れ出したエポキシ接着剤の距離が60μm以上70μm未満
×:流れ出したエポキシ接着剤の距離が70μm以上
離型フィルムを170℃で30分間加熱処理し、下記式により熱収縮率(MD方向)を計算した。
ΔL=[(L1-L0)/L0]×100
ΔL:熱収縮率(加熱寸法変化率)(%)
L1:加熱後寸法(mm)
L0:加熱前寸法(mm)
下記の基準で評価した。
〇:-1%≦ΔL≦1%
×:上記範囲外
離型フィルムを用いて、モールド成型装置による成型加工を行った。得られた成型品を目視にて確認し、下記の基準で評価した。
◎:外観不良が無く、適度なつや消し効果が得られる
〇:表面にフローマークやシワによる外観不良が無い
△:シワによる外観不良は見られないが、表面にフローマークが見られる
×:シワ発生による顕著な外観不良が見られる
ポリブチレンテレフタレート(PBT)を押出機(ジーエムエンジニアリング社製、GM30-28(スクリュー径30mm、L/D28))を用いてTダイ幅400mmにて押出し、支持層を形成した。
得られた支持層に熱硬化タイプのフッ素系離型剤を塗布し、熱硬化させることで厚さ0.3μmの離型層を形成した。
更に、エンボス形状を有するロールで加熱・加圧することにより両面が梨地加工(離型層の表面十点平均粗さRz=12μm)された厚さ50μmの離型フィルムを得た。
なお、170℃における弾性率を、AUTOGRAPH AGS-X(島津製作所社製)を用いて測定した。
表3、4のように、梨地加工の有無、Rz値、離型層の離型剤を変更したこと以外は実施例1と同様にして離型フィルムを得た。
実施例及び比較例で得られた離型フィルムについて上記と同様の評価を行った。結果を表3、4に示した。
ポリブチレンテレフタレート(PBT)75重量部と、PBTエラストマー(ポリブチレンテレフタレートとポリテトラメチレングリコールの共重合物)25重量部の混合樹脂を押出機(ジーエムエンジニアリング社製、GM30-28(スクリュー径30mm、L/D28))を用いてTダイ幅400mmにて押出し、支持層を形成した。
得られた支持層に熱硬化タイプのフッ素系離型剤を塗布し、熱硬化させることで厚さ0.3μmの離型層を形成した。
更に、エンボス形状を有するロールで加熱・加圧することにより両面が梨地加工(離型層の表面十点平均粗さRz=12μm)された厚さ50μmの離型フィルムを得た。
なお、170℃における弾性率を、AUTOGRAPH AGS-X(島津製作所社製)を用いて測定した。
表5のように、梨地加工の有無、Rz値、離型層の離型剤を変更したこと以外は実施例1と同様にして離型フィルムを得た。
実施例及び比較例で得られた離型フィルムについて上記と同様の評価を行った。結果を表5に示した。
ポリブチレンテレフタレート(PBT)を押出機(ジーエムエンジニアリング社製、GM30-28(スクリュー径30mm、L/D28))を用いてTダイ幅400mmにて押出し、縦延伸機と横延伸機を用いた2軸延伸により3倍に延伸して、支持層を形成した。
得られた支持層に熱硬化タイプのフッ素系離型剤を塗布し、熱硬化させることで厚さ0.3μmの離型層を形成した。
更に、エンボス形状を有するロールで加熱・加圧することにより、3倍延伸、かつ、両面が梨地加工(離型層の表面十点平均粗さRz=12μm)された離型フィルムを得た。
表6のように、延伸処理の有無、梨地加工の有無、Rz値、離型層の離型剤を変更したこと以外は実施例1と同様にして離型フィルムを得た。
実施例及び比較例で得られた離型フィルムについて上記と同様の評価を行った。結果を表6に示した。
Claims (5)
- ポリブチレンテレフタレート樹脂を含有する層を少なくとも1層有する単層構造又は多層構造の支持層と、離型層とを有することを特徴とする離型フィルム。
- 支持層は、無延伸樹脂層であることを特徴とする請求項1に記載の離型フィルム。
- 離型フィルムの片面又は両面が梨地加工されていることを特徴とする請求項1又は2記載の離型フィルム。
- 梨地加工された表面の十点平均粗さRzが3.0以上であることを特徴とする請求項3記載の離型フィルム。
- 梨地加工された表面の十点平均粗さRzが15.0以下であることを特徴とする請求項3又は4記載の離型フィルム。
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JP2016144897A (ja) * | 2015-02-09 | 2016-08-12 | 住友ベークライト株式会社 | 離型フィルム |
JP2018178106A (ja) * | 2017-04-06 | 2018-11-15 | 積水化学工業株式会社 | 離型フィルム |
JPWO2019069658A1 (ja) * | 2017-10-06 | 2020-09-10 | 東レフィルム加工株式会社 | モールド成形用離型フィルムおよびモールド成形法 |
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CN110718474B (zh) * | 2019-09-03 | 2022-08-16 | 富联裕展科技(深圳)有限公司 | 封装方法、离型件及其制作方法 |
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