WO1999012723A1 - Biodegradable cellulose acetate foams and process for producing the same - Google Patents
Biodegradable cellulose acetate foams and process for producing the same Download PDFInfo
- Publication number
- WO1999012723A1 WO1999012723A1 PCT/JP1998/003860 JP9803860W WO9912723A1 WO 1999012723 A1 WO1999012723 A1 WO 1999012723A1 JP 9803860 W JP9803860 W JP 9803860W WO 9912723 A1 WO9912723 A1 WO 9912723A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foam
- cellulose acetate
- biodegradable
- sheet
- weight
- Prior art date
Links
- 239000006260 foam Substances 0.000 title claims abstract description 133
- 229920002301 cellulose acetate Polymers 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 28
- 230000008569 process Effects 0.000 title description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 102
- 210000000497 foam cell Anatomy 0.000 claims abstract description 16
- 239000012670 alkaline solution Substances 0.000 claims abstract description 12
- 230000021736 acetylation Effects 0.000 claims abstract description 8
- 238000006640 acetylation reaction Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 23
- 230000037303 wrinkles Effects 0.000 claims description 22
- 210000004027 cell Anatomy 0.000 claims description 21
- 239000002994 raw material Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 17
- 239000004014 plasticizer Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000002667 nucleating agent Substances 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 11
- 239000000454 talc Substances 0.000 claims description 11
- 229910052623 talc Inorganic materials 0.000 claims description 11
- 239000004088 foaming agent Substances 0.000 claims description 5
- 229920001515 polyalkylene glycol Polymers 0.000 claims description 5
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims 1
- 238000005187 foaming Methods 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 19
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 18
- 229920001223 polyethylene glycol Polymers 0.000 description 16
- 239000000463 material Substances 0.000 description 14
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000008859 change Effects 0.000 description 9
- 238000010438 heat treatment Methods 0.000 description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 9
- 235000017557 sodium bicarbonate Nutrition 0.000 description 9
- 238000000465 moulding Methods 0.000 description 8
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 238000005520 cutting process Methods 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 7
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- 230000000844 anti-bacterial effect Effects 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical group CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000004898 kneading Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- -1 2-ethylhexyl Chemical group 0.000 description 3
- 239000004604 Blowing Agent Substances 0.000 description 3
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000011358 absorbing material Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 229920006167 biodegradable resin Polymers 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000005003 food packaging material Substances 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000005022 packaging material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- QMMJWQMCMRUYTG-UHFFFAOYSA-N 1,2,4,5-tetrachloro-3-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl QMMJWQMCMRUYTG-UHFFFAOYSA-N 0.000 description 1
- DIXLLPSIGPJYOW-UHFFFAOYSA-N 1-o-butyl 6-o-octyl hexanedioate Chemical compound CCCCCCCCOC(=O)CCCCC(=O)OCCCC DIXLLPSIGPJYOW-UHFFFAOYSA-N 0.000 description 1
- VRFMFQHSDWKYDM-UHFFFAOYSA-N 6-o-benzyl 1-o-butyl hexanedioate Chemical compound CCCCOC(=O)CCCCC(=O)OCC1=CC=CC=C1 VRFMFQHSDWKYDM-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920002101 Chitin Polymers 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- 241000723346 Cinnamomum camphora Species 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- OMPIYDSYGYKWSG-UHFFFAOYSA-N Citronensaeure-alpha-aethylester Natural products CCOC(=O)CC(O)(C(O)=O)CC(O)=O OMPIYDSYGYKWSG-UHFFFAOYSA-N 0.000 description 1
- PYGXAGIECVVIOZ-UHFFFAOYSA-N Dibutyl decanedioate Chemical compound CCCCOC(=O)CCCCCCCCC(=O)OCCCC PYGXAGIECVVIOZ-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000233855 Orchidaceae Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- DOOTYTYQINUNNV-UHFFFAOYSA-N Triethyl citrate Chemical compound CCOC(=O)CC(O)(C(=O)OCC)CC(=O)OCC DOOTYTYQINUNNV-UHFFFAOYSA-N 0.000 description 1
- LEHOTFFKMJEONL-UHFFFAOYSA-N Uric Acid Chemical compound N1C(=O)NC(=O)C2=C1NC(=O)N2 LEHOTFFKMJEONL-UHFFFAOYSA-N 0.000 description 1
- TVWHNULVHGKJHS-UHFFFAOYSA-N Uric acid Natural products N1C(=O)NC(=O)C2NC(=O)NC21 TVWHNULVHGKJHS-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical class OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- ONZOGXRINCURBP-NXEZZACHSA-N bis(2-methylpropyl) (2r,3r)-2,3-dihydroxybutanedioate Chemical compound CC(C)COC(=O)[C@H](O)[C@@H](O)C(=O)OCC(C)C ONZOGXRINCURBP-NXEZZACHSA-N 0.000 description 1
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 235000010216 calcium carbonate Nutrition 0.000 description 1
- PYSZASIZWHHPHJ-UHFFFAOYSA-L calcium;phthalate Chemical compound [Ca+2].[O-]C(=O)C1=CC=CC=C1C([O-])=O PYSZASIZWHHPHJ-UHFFFAOYSA-L 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- OWGWUYJIXNROGP-UHFFFAOYSA-N dibutyl benzene-1,2-dicarboxylate;phosphoric acid Chemical class OP(O)(O)=O.CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC OWGWUYJIXNROGP-UHFFFAOYSA-N 0.000 description 1
- GWEAITXQZMNHAC-UHFFFAOYSA-N dimethyl benzene-1,2-dicarboperoxoate Chemical compound C(C=1C(C(=O)OOC)=CC=CC1)(=O)OOC GWEAITXQZMNHAC-UHFFFAOYSA-N 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- MQRJBSHKWOFOGF-UHFFFAOYSA-L disodium;carbonate;hydrate Chemical compound O.[Na+].[Na+].[O-]C([O-])=O MQRJBSHKWOFOGF-UHFFFAOYSA-L 0.000 description 1
- XGZRAKBCYZIBKP-UHFFFAOYSA-L disodium;dihydroxide Chemical compound [OH-].[OH-].[Na+].[Na+] XGZRAKBCYZIBKP-UHFFFAOYSA-L 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229940057975 ethyl citrate Drugs 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000000640 hydroxylating effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- WIBFFTLQMKKBLZ-SEYXRHQNSA-N n-butyl oleate Chemical compound CCCCCCCC\C=C/CCCCCCCC(=O)OCCCC WIBFFTLQMKKBLZ-SEYXRHQNSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229940116351 sebacate Drugs 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 238000010129 solution processing Methods 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 description 1
- 235000013769 triethyl citrate Nutrition 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- 229940116269 uric acid Drugs 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/3402—Details of processes or apparatus for reducing environmental damage or for working-up compositions comprising inert blowing agents or biodegradable components
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/125—Water, e.g. hydrated salts
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2201/00—Foams characterised by the foaming process
- C08J2201/02—Foams characterised by the foaming process characterised by mechanical pre- or post-treatments
- C08J2201/03—Extrusion of the foamable blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
- C08J2301/08—Cellulose derivatives
- C08J2301/10—Esters of organic acids
- C08J2301/12—Cellulose acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
Definitions
- the present invention relates to a cellulose acetate biodegradable foam and a method for producing the same.
- the present invention particularly relates to a cellulose acetate biodegradable foam suitable for various uses such as a heat insulating material, a cushioning material, and a food packaging material, and a production method for stably obtaining the foam.
- 5-320405 discloses a method for obtaining a molded product mainly by in-mold molding using expandable wood-based resin particles obtained by adding a foaming agent to non-solution chemically modified wood. It has been disclosed. Also, Japanese Patent Application Laid-Open No. 6-32928 discloses a method of obtaining a foamed sheet from a foamable wood-based resin obtained by impregnating a non-solution type chemically modified wood with a foaming agent, and obtaining a container-shaped molded product. Have been. Further, in Japanese Patent Application Laid-Open No.
- a biodegradable resin composed of acetate or a substance containing the same and substantial water are introduced at least as raw materials, and after being heated and pressurized, A method is disclosed in which the resin is rapidly released, foamed, and then formed into a predetermined shape by a molding die.
- the foamed molded products obtained by these methods are unstable in mechanical properties (tensile strength, tear strength, compressive strength, etc.), hardness and rigidity, and are not necessarily suitable for use as heat insulators and cushioning materials. It does not become a thing. Disclosure of the invention
- the present invention has been made in view of the above-mentioned problems of the prior art, and has an object of being excellent in mechanical properties, and having a stable and appropriate hardness and rigidity. Therefore, heat insulating materials, cushioning materials, food packaging materials, etc.
- An object of the present invention is to provide a cellulose acetate biodegradable foam capable of easily molding various molded articles of the present invention and a method for producing the same.
- the present inventors have attempted to solve the above-mentioned problems by using cellulose acetate as a biodegradable material, and as a result, by providing a foam having specific foam properties, the above-mentioned problems have been solved. I found something to be achieved.
- a cellulose acetate biodegradable foam having a foam cell diameter of 0.001 to 0.8 mn) and an apparent density of 0.01 to 0.27 g / cm 3 is obtained.
- the present invention also comprises a cellulose acetate (A), a plasticizer (B) and a foam nucleating agent (C), wherein the weight ratio of (A) :( B) :( C) is (100): (0-80):
- the mixed raw material (D) of (2-50) is mixed with water (E) as a blowing agent at a weight ratio of 2-100 relative to (D), and the mixture ( F) is melted at a temperature of 150 to 250 ° C, weighed at a temperature of 120 to 220 ° C, and then extruded at a shear rate of 1000 to 20000 sec.
- a manufacturing method is provided. BRIEF DESCRIPTION OF THE FIGURES
- FIG. 1 is a schematic longitudinal sectional view showing a part of a foam sheet as an embodiment of the foam of the present invention in an enlarged manner.
- FIG. 2 is a schematic flow sheet showing the method for producing a foam of the present invention.
- cell mouth acetate is used as a biodegradable material.
- cellulose acetate is biodegradable (CM Buchanan et al., J. Appl. Polym. Sci., 47, 1709 (1993); ibid ., 50,
- the biodegradable cellulose acetate foam of the present invention has foam properties of a foam cell diameter of 0.001 to 0.8 mm and an apparent density of 0.01 to 0.27 g / cm 3 regardless of the shape of the foam. It is necessary that Here, the foam cell diameter and the apparent density are measured as follows.
- the foam obtained in the form of a strand was cut into a columnar shape having a length of 1 cm, the diameter was measured to obtain the volume, and the weight was divided to obtain the density.
- acetic acid released from the cellulose acetate may remain in the foam.
- the obtained foam exhibits an antibacterial effect.
- the amount of released acetic acid can be measured as follows. Amount of acetic acid released
- the amount of acetic acid released from the cellulose acetate remaining in the foam is 3 ppm or more according to the above-mentioned measurement method, it is preferable in terms of antibacterial action.
- the acetic acid generated is in the foam, but is released outside without staying inside the cell of the obtained foam because the cells of the foam are open cells. Further, as described above, since the foam cell diameter is as small as 0.001 to 0.8 mm, an appropriate amount is gradually released without sudden release and the antibacterial effect is maintained for a long time.
- the cellulose acetate biodegradable foam of the present invention may be in any form as long as it has the above properties.
- the exposure ratio was measured as follows.
- the diameter of the foam particles cut by the cutting device is the diameter of the foam particles cut by the cutting device.
- the area of a portion where a foam cell having a diameter of 0.1 mm or more was exposed was calculated and calculated by dividing the area by the total surface area of the foam particles.
- the particle diameter of the particulate foam is smaller than three bands, it takes not only time and effort to prepare a molded article from the foam, but also the obtained molded article may have poor buffer characteristics. If the particle diameter is larger than 200 m, handling properties may be poor.
- the proportion of the cut portion of the foam cell becomes too large, and fine powder may fall off, which may adversely affect the enclosed product.
- the foam particles themselves can be used as a cushioning material, a heat insulating material, and a filler. Further, the foam particles can be used as a molded product by being packed in a mold having an arbitrary shape and shaped.
- the method of packing and shaping in a mold is not particularly limited, and any method can be adopted.
- the foam particles may be formed by heat-sealing or may be formed by bonding between foam particles using a binder.
- a binder a solution of the binder in an appropriate solvent such as water or alcohol is attached to the surface to such an extent that it does not penetrate into the foam particles, and then the solvent is evaporated. Between foam particles You may adhere. Alternatively, a heat-fusible resin may be adhered and bonded by heat treatment during shaping. If a solvent is used, water is preferred because of environmental considerations.
- the cellulose acetate biodegradable foam of the present invention is a sheet-like foam, it is a wrinkled foam sheet having a thickness t of 1 to 50 mm and a wrinkle height h of 2 to 1 Omm,
- the wrinkle interval w is preferably 2 to 10 mm.
- Fig. 1 is an enlarged partial view of a wrinkled foam sheet and is a schematic diagram of a vertical cross section.
- t, h, and w indicate the thickness of the sheet, the height of the wrinkles, and the thickness of the sheet.
- the obtained molded article may have poor buffering properties. Also, if the thickness of the sheet is larger than 50 orchids, the handling may be poor.
- the height h of the wrinkles is less than 2 mm, the elongation during molding will be small and tearing may occur.
- the gap is too large to be absorbed during vacuum forming, and even in the case of press forming, a plurality of wrinkles are not evenly stretched but only a specific portion is stretched, so that breakage tends to occur. There is.
- the broken part is weakened, which may easily cause tearing during molding.
- it exceeds 10 the number of wrinkles contributing to elongation is reduced, and tearing may easily occur.
- the shape of the wrinkles can be adjusted by appropriately setting the amount of water added to the raw material, the amount of resin discharged from the die, and the width of the discharge opening of the die, but it is important to use water as a foaming agent. It is. In other words, the foam sheet discharged from the die is rapidly cooled and solidified by the latent heat of water evaporation, so that the sheet expands in the width direction due to the foaming. Is suppressed, and wrinkles can be formed.
- the formed wrinkles are extremely useful in forming a sheet. That is, the sheet obtained by extrusion foaming is insufficient in flexibility to form a deep drawn cup shape as it is, but by forming wrinkles, the wrinkles elongate during molding. This makes it possible to compensate for the lack of flexibility and to obtain a deep drawn cup-shaped molded product.
- the cellulose acetate foam sheet has no wrinkles, looks, has dimensional stability, and has improved tensile strength. It is preferable because you can get This sheet preferably has a thickness of 0.5 to 25 and a tensile strength in the machine direction and in the transverse direction of 110 to 900 g / cm and 30 to 220 g / cm, respectively.
- Such desirable characteristics can be obtained by subjecting the wrinkled foamed sheet to a heat treatment at a temperature of 100 to 150 ° C. and a surface pressure of 5 to 40 kgf / cm 2 .
- a method of forming a sheet is generally used, that is, vacuum forming, pressure forming, press forming, and the like. If there are wrinkles, press molding is preferred because air leakage is likely to occur, and the sheet itself also tends to transmit air.
- FIG. 2 shows a schematic production flow sheet of the foam according to the present invention.
- the acetic acid esterification degree is 45% or more, particularly the acetylation degree, which is represented by the weight ratio of acetic acid bound to cellulose. 47 to 60% (the number of bonded acetyl groups per cell unit is 1.9 to 2.8) is preferred.
- T When the degree of acetylation is less than 45%, the melting temperature is too high, so that it may be difficult to stably melt-mold the foamed particles.
- Other substances may be added as long as the purpose is not impaired. Examples thereof include a plasticizer, a heat stabilizer, a foam nucleating agent, and a foaming aid.
- polyhydric alcohols such as polyethylene glycol, polyethylene glycol, and glycerin; dimethyl phthalate, getyl phthalate, dibutyl phthalate pill, dibutyl phthalate, dibutyl phthalate Phosphoric acid esters such as mine and dimethoxyl phthalate; phosphoric acid esters such as tributyl phosphate, triphenyl phosphate and tricresyl phosphate; diethyl ester sebacate; Sebacic esters such as dibutyl sebacate and sebacin dioctyl; adipates such as dioctyl adipate, butyloctyl adipate, and butyl benzyl adipate; tributyl, citrate, 2-ethylhexyl, and quenyl Ethyl citrate such as acetyl tributyl acid and acetyl citrate trioctyl
- plasticizers may be used alone or in combination of two or more, for example, polyalkylene glycol and glycerin.
- the amount is preferably 80 parts by weight or less, more preferably 50 parts by weight or less, based on the weight of cellulose acetate. If the amount exceeds 80 parts by weight, the shrinkage after extrusion foaming becomes large, and the foam may not be foamed to a desired density.
- foam nucleating agents inorganic fine particles such as talc, gay oxide, titanium oxide, magnesium oxide, aluminum oxide, calcium gayate, cellulose powder, chitin, chitosan, wood powder, and stearic acid Organic fine particles such as a metal salt can be added. Particularly, talc can impart a suitable foaming property to the cellulose acetate, so that uniform and highly foamed foam particles can be obtained. Obtained easily.
- foam nucleating agents may be used alone or in combination of two or more.
- the amount of these foaming nucleating agents and foaming aids to be added to cellulose acetate is appropriately in the range of 2 to 50 parts by weight, preferably 5 to 30 parts by weight, based on the weight of cellulose acetate. is there. If the amount is less than 2 parts by weight, the effect of blending these additives will not appear.For example, if the amount of the foaming nucleating agent is small, uneven and coarse foamed cells are likely to be formed. Secondary agglomeration is likely to occur, so that uneven and coarse foamed cells are also likely to be formed, and foaming properties may also be reduced due to a decrease in the fraction of cellulose acetate.
- the raw material may be a mixture of cellulose acetate and various additives, or water as a blowing agent, or a mixture of cellulose acetate and various additives by melt extrusion.
- a chip is made, and any form using the chip as a raw material is possible.
- the cellulose acetate may be in the form of flakes or powder, and in the case of the flakes, a dal image is set on the extruder screw or a twin-screw extruder. It is preferable to take appropriate measures to improve the kneadability when using.
- the raw materials may be extruded from a nozzle and a die using an extruder.
- cellulose acetate or a mixture of cellulose acetate and additives Water as a foaming agent is added in an amount of 2 to 100 parts by weight, preferably 5 to 50 parts by weight, based on 100 parts by weight of the product.
- Examples of the method of addition include a method of impregnating the raw material, a method of injecting the raw material with a pump from a vent portion between the raw material supply port and the discharge port of the extruder, and the like.
- the expansion ratio will not be sufficiently increased, and the characteristics as a foam cannot be sufficiently exhibited.
- the amount exceeds 100 parts by weight when the raw material is impregnated, lumps are generated, and when supplied from the hopper port of the extruder, a bridge is generated, so that the raw material cannot be charged properly. .
- the vent part even if it is supplied from the vent part, there is no effect of greatly improving the foaming ratio, but rather, problems such as unstable discharge are likely to occur.
- the discharged foam is rapidly cooled and solidified by the latent heat of evaporation of water, so that the foam can be maintained without shrinking.
- the extruder used for melt-kneading may be any type of extruder that can melt-knead cellulose acetate to which water has been added under high temperature and high pressure.
- a twin-screw type extruder is used.
- the temperature at which the cellulose acetate foam is melt-extruded is 150 to 250 ° C, preferably 180 to 220 ° C in the compression section.
- the temperature is lower than 150 ° C, the cellulose acetate does not melt, and when the temperature is higher than 250 ° C, the cellulose acetate tends to be carbonized.
- 120-220. C preferably 140-200 ° C. 1 If lower than 20 ° C The viscosity of the resin in the extruder is too high and the discharge tends to be unstable
- the obtained foam does not liberate acetic acid sufficiently.
- the temperature exceeds 220 ° C. after the resin is discharged, the cooling of the resin by the latent heat of evaporation becomes insufficient, causing shrinkage, and the foaming ratio of the finally obtained foam becomes low.
- the shape of the pore nozzle at the time of extrusion may be any of a circle, a triangle, a square, a rectangle, a star, a hollow, and the like, and the sheet is extruded from a film or sheet manufacturing die. A foam is obtained.
- the melt-kneading time cannot be unconditionally set because it varies depending on the discharge amount per unit time, the melt-kneading temperature, and the like, but it is sufficient that the mixture has sufficient time to be uniformly melt-kneaded.
- the die temperature of the discharge section may be the same as the melt-kneading temperature, but may be lower than the temperature within a range where the discharge can be performed.
- the foam cell diameter in the range of 0.001 to 0.8 mm, it is necessary to maintain the shear rate of discharge at 1,000 to 20000 sec- 1 . If the cell diameter is less than 1 000 sec-- 1 , the cell diameter exceeds 0.8 mm, and if it exceeds 20000 sec- ', clogging tends to occur at the discharge port, and a stable foam cannot be obtained. .
- the tip rotates while contacting the tip of the die discharge surface. It is preferable to cut the flat blade group using a foam cutting device arranged radially so that the blade surface is orthogonal to the rotating surface on which the flat blade group rotates. Good.
- the raw material in order to produce a foamed sheet, may be extruded from a die for producing a sheet using an extruder.
- the discharge opening width is preferably set to 0.1 to 1 mm.
- the conditions are as follows: a temperature of 100 to 150 ° C., and a surface pressure of 5 to 40 kg f / cm 2 . It is preferable to do so.
- the temperature is lower than 100 ° C or when the surface pressure is lower than 5 kgf / cm 2 , the effect of the heating port one-color treatment may not be obtained, and when the temperature exceeds 150 ° C or the surface pressure is 40 kgf / cm 2 If it exceeds, the sheet may fuse to the roller during processing.
- the heating roller treatment it is possible to process a plurality of sheets in a stack, press them together, and use them as a single sheet.
- the number is up to 10. If the number exceeds 10, heat is not sufficiently transmitted to the inside during processing, and sheets cannot be crimped.
- the treatment speed is not particularly limited, but in consideration of the ease of handling the sheet after the heat treatment in the process, it is preferably 1 to 10 m / min, and more preferably 2 to 5 mZ.
- the acetyl group in the molecule may be released as acetic acid.
- This free acetic acid gives the foam an antibacterial property, which is preferable in that respect.
- the acetic acid smell cause discomfort to the consumer, but also the container is sealed with metal and the like. Otherwise, it may cause rust.
- the present invention also provides the cellulose acetate biodegradable foam of the present invention, wherein the foam is treated with a weak alkaline solution, the acetylation degree is 45 to 60%, and the acetic acid odor is reduced.
- the present invention provides a cellulose acetate biodegradable foam.
- the foam described above is treated with a weak alkaline solution, and while maintaining the acetylation degree at 45 to 60%, the foam without acetic acid odor is produced. It is a body.
- a weak alkaline solution treatment is performed in order to reduce acetic acid released from the cellulose acetate present in the obtained foam and the molded product thereof.
- the acetic acid odor can be determined by quantifying the amount of acetic acid according to the method described above. Then, when the amount of acetic acid released from the cellulose acetate remaining in the foam was less than 3 ppm by this measurement method, it was determined to be odorless.
- the pH is preferably 7.5 to 8.5. If the pH is lower than 7.5, the liberated acetic acid may not be sufficiently neutralized and its odor may not be reduced. On the other hand, if it exceeds 8.5, the cellulose acetate is genified by the alkali treatment, the acetylation degree becomes less than 45%, and the foam may shrink and harden.
- the weak alkali may be any as long as it has a pH of 7.5 to 8.5. For example, sodium bicarbonate, sodium hydrogen carbonate, sodium carbonate, calcium carbonate may be used.
- Aqueous solution such as sodium hydroxide, calcium carbonate, sodium hydroxide, and hydroxylating water
- the treatment amount of the weak alkaline solution is 20 to 100 parts by weight with respect to the foam. It is preferable that there is. If the treatment amount is less than 20% by weight, the liberated acetic acid cannot be sufficiently neutralized and its odor may not be reduced. If the content exceeds 100% by weight, the alkali treatment causes the cellulose acetate to be genified, the acetylation degree becomes less than 45%, and the foam may shrink and harden. .
- the method of the weak alkaline treatment in the present invention is the same as that of a general solution treatment.
- a method for showering or spraying the aqueous solution may be mentioned.
- a method of spraying a weak alkaline solution immediately after being discharged from the extruder is effective in terms of quantitativeness and work efficiency.
- the foam obtained in the form of a strand was cut into a columnar shape with a length of 1 cm, the diameter was measured to determine the volume, and the weight was divided to determine the density.
- the obtained foam was cut with a razor, and the cut surface was photographed with a microscope under magnification, and cell diameters at 10 points were randomly measured to calculate an average value.
- the area of the portion where the foam cells having a diameter of 0.1 or more were exposed was obtained with a microscope and calculated by dividing by the total surface area of the foam particles.
- the obtained sheet was cut into 5 cm squares, its thickness and weight were measured, the density was calculated, and the value was divided by the density of the raw material to obtain the foaming ratio.
- the cutting device consisted of 36 blades, 0.3 mm thick, made of a panel steel plate, arranged on the holder with equal pitch, and rotated at 1800 p.m so that the tip traced a locus of ⁇ 220 mm. Table 1 summarizes the results obtained.
- composition parts by weight
- PEG Temperature conditions Discharge rate Cutoff Foaming Apparent foaming Exposure rate Drunk acid amount
- Example 1 100 20 0" 20 400 210 190 12.9 8000 31 0.043 2.0 ⁇ 0.02 10
- Example 2 100 20 50 20 400 210 190 12.4 7700 17 0.080 0.7 0 13
- Example 3 100 0 10 20 400 210 190 12.9 8000 35 0.039 0.5 0 8
- Example 4 100 20 10 20 400 210 190 12.9 8000 39 0.035 0.3 0 5
- Example 5 100 40 10 20 400 210 190 12.7 7900 36 0.037 0.4 0 3
- Example 6 100 60 10 20 400 210 190 13.0 8100 14
- Example 8 100 20 10 0 "210 190 12.5 7800 3 0.520 ⁇ 0.2 0.01 3
- Example 8 100 20 10 2 400 210 190 12.9 8000 11 0.120 0.3 0 5
- Example 9 100 20 10 40 400 210 190 13.0 8100 34 0.040 0.2 0 6
- Example 10 100 20 10 80 400 210 190 12.9 8000 35 0.039 0.3 0 7
- Example 11 100 20 10 100 400 210 190 12.7 7900 38 0.036 0.3 0 10
- Comparative example 5 100 20 10 1 400 210 190 Discharge impossible
- Example 12 100 20 10 20 1000 210 190 12.7 7900 35 0.039 0.3 0 9
- Example 13 100 20 10 20 5000 210 190 12.5 7800 34 0.040 0.4 0 5
- composition C parts by weight) PEG Temperature conditions Discharge rate Breaking Foaming Apparent foaming Exposure rate Acetic acid amount ii degree Magnification Density Cell diameter
- Example 14 100 20 10 20 10000 210 190 13.0 8100 35 0.039 0.3 0.01 7
- Example 15 100 20 10 20 15000 210 190 12.7 7900 40 0.034 0.4 0 9
- Example 16 100 20 10 20 20000 210 190 12.9 8000 36 0.037 0.3 0 10
- Example 17 100 20 10 20 22000 210 190 12.7 7900 36 0.037 0.3 (Loose y size) 0 9
- Invert 6 100 20 10 20 400 1 190 Discharge impossible
- Example 18 100 20 10 20 400 150 190 13.0 8100 34 0.040 0.3 0 7
- Example 19 100 20 10 20 400 250 190 12.9 8000 33 0.041 0.2 0 10
- Specific squeezing example 7 100 20 10 20 400 260 190 Carbonization
- Comparative example 8 100 20 10 20 400 210 1 4.8-11.3 3000-1 g 30 0.3 0 1
- Example 20 100 20 10 20 400 210 120 13.0 8 100 30 0.045 0.2 0 3
- Example 21 100 20 10 20 400 210 220 13.2 8200 14 0.100 0.2 0 12
- Example of specific aperture 9 100 20 10 20 400 210 230 12.7 7900 8 0.29 0.3 0 11
- Specific aperture 10 100 20 10 20 400 210 190 0.8 500 "14 0.095 0.9 X 0 10
- Example 22 100 20 10 20 400 210 190 1.6 1000 19 0.070 0.8 0 10
- Example 23 100 20 10 20 400 210 190 8.0 5000 30 0.045 0.4 0 7
- Example 24 100 20 10 20 400 210 190 24.1 15000 39 0.035 0.3 0 5
- Example 25 100 20 10 20 400 210 190 32.2 20000 39 0.035 0.3 0 7
- Specific aperture 11 100 20 10 20 400 210 190 33.8 2100QX Discharge unstable
- Example 4 The cellulose acetate, polyethylene glycol and talc used in Example 4 were mixed with water in the proportions shown in Table 2 and mixed with a twin-screw extruder (0TE57-11 manufactured by Osaka Seiki Co., Ltd.). The mixture was melted and plasticized at 210 ° C, and extruded from a die having a width of 500 mm at 200 ° C to obtain a foamed sheet. The moldability of the obtained foam sheet was evaluated. Table 2 summarizes the results obtained.
- Comparative Example 16 100 50 20 20 55 0.3 9 ⁇ 10 0.285 x 0.2 3 2 1 2 ⁇ Example 30 100 50 20 20 70 0.3 1170 15 0.090 0.3 4 3 2 2 ⁇ Example 31 100 50 20 20 320 0.2 19700 58 0.023 0.3 5 5 4 4 O Ratio example 17 100 50 20 20 340 0.2 21000 "
- Example 32 100 50 20 20 450 0.5 4400 40 0.034 0.6 6 12 11 11 ⁇
- the foamed cellulose acetate sheet of Example 28 was press-bonded with a metal mesh of 150 mm0 having a square dot pattern of 40 mesh and a depth of 120 mm with a 150 mm0 metal roller and a roller made of NBR having a hardness of 75 degrees A.
- a foam sheet was obtained. Table 3 summarizes the results obtained.
- Heating roller condition Strength (g / cm) Surface shape Number of sheets
- Example 28 200 Heating roller No treatment 200 70 Yes
- Example 33 1 200 100 20 270 85
- Example 34 200 130 20 280 90 None
- Example 35 1 200 150 20 280 90
- Example 36 200 130 5 230 80
- Example 38 200 130 30 280 90
- Example 39 200 130 40 280 90 None Example 40 1 50 130 20 110 30 None Example 41 300 130 20 800 170 to Example 42 400 130 20 900 220 None Example 43 2 300 130 20 850 170 None Example 44 5 350 130 20 860 180 None Example 45 10 400 130 20 890 220
- the cutting device consists of a panel steel plate, 36 blades with a thickness of 0.3 m are arranged on the holder with equal pitch, and the tip is rotated at 1800 r. ⁇ . ⁇ so that the tip traces a ⁇ 220 mm locus. I let it.
- An aqueous solution of sodium hydrogen carbonate (PH 8.0) was added to the obtained particulate foam at 60 PHR, and the amount of acetic acid was measured at a temperature of 20 ° C. Table 4 summarizes the results obtained.
- Table 4 Composition (parts by weight) PEG Temperature conditions Discharge rate Breaking Foaming Apparent foaming Exposure rate Acetic acid amount
- Example 58 100 20 10 20 1000 210 190 12.7 7900 35 0.039 0.3 0 0
- Example 59 100 20 10 20 5000 210 190 12.5 7800 34 0.040 0.4 0 0
- Example 60 100 20 10 20 10000 210 190 13.0 8100 35 0.039 0.3 0.01 0
- Execution 3 100 20 10 20 210 190 12.7 7900 36 0.037 0.3 (''? Key size) 0 1 fr ⁇ i 100 20 10 2 140 x 190 Discharge impossible
- Example 66 100 20 10 20 400 210 120 13.0 8 100 30 0.045 0.2 0 0
- Example 67 100 20 10 20 400 210 220 13.2 8200 14 0.100 0.2 0 2
- Example of specific aperture 26 100 20 10 20 400 210 230 x 12.7 7900 10 0.135 x 0.2 0 2
- Specific aperture 27 100 20 10 20 400 210 190 0.8 500 x 14 0.095 0.9 X 0 1
- Example 68 100 20 10 20 400 210 190 1.6 1000 19 0.070 0.8 0 1
- Example 69 100 20 10 20 400 210 190 8.0 5000 30 0.045 0.4 0 0
- Example 70 100 20 10 20 400 210 190 24.1 15000 39 0.035 0.3 0 0
- Example 71 100 20 10 20 400 210 190 32.2 20000 39 0.085 0.3 0 0
- Specific aperture 28 100 20 10 20 400 210 190 33.8 2 strokes x ejection unstable
- Example 50 The cellulose acetate, polyethylene glycol and talc in Example 50 were mixed with water in the proportions shown in Table 5, and the mixture was subjected to a twin-screw extruder (Otei Seiko Kogyo Co., Ltd., 0TE-57-). It was melted and plasticized at 210 ° C using 11), and extruded from a die having a width of 500ii at 200 ° C to obtain a foamed sheet. An aqueous solution of sodium hydrogen carbonate (pH 8.0) was added to the foamed sheet at 60 PHR, and the amount of acetic acid was measured at a temperature of 20 ° C. Further, the formability of the sheet after the weak force treatment was evaluated. Table 5 summarizes the results obtained.
- Composition C parts by weight) Discharge Amount Die Shear Foaming Apparent Foaming Vinegar Thickness Wrinkle Wrinkle Formability Discharge Height Interval Cellulol Plasticizer Foaming Nucleating Agent Water Opening width Magnification Density Cell diameter (h) (w) acetate ( (PEG) (talc) (kg / hr)) (sec— ') (times) (g / cm 3 ) (mm) (ppm) (mm) (mm) (.mm) Comparative Example 29 100 0 0 "20 300 0.3 8 200 30 0.045 1.4 X 1 4 3 3 ⁇ Ratio 30 100 50 0 ⁇ 20 300 0.3 8 200 32 0.042 1.5 X 0 4 3 3 ⁇ Example 72 100 50 15 20 300 0.3 8 200 40 0.034 0.3 0 5 3 3 ⁇ Comparative Example 31 100 50 20 1 "300 0.3 8 200 7 0.193 x 0.2 0 2 1 1 ⁇
- Example 73 100 50 20 2 300 0.3 8 200 15
- Comparative Example 33 100 50 20 20 55 0.3 917-10 0.135 x 0.2 0 2 1 2 ⁇
- Example 76 100 50 20 20 70 0.3 1170 15 0.090 0.3 0 3 2 2 ⁇
- Example 77 100 50 20 20 320 0.2 19700 58 0.023 0.3 0 5 4 4 O
- Comparative example 34 100 50 20 20 340 0.2 21000 "Discharge unstable
- Example 78 100 50 20 20 450 0.5 4400 40 0.034 0.6 0 12 11 11 ⁇
- the expandable particles of Example 50 were treated with sodium hydrogen carbonate and sodium hydroxide at the pH concentration and treatment amount shown in Table 6, and the treated particles were treated at temperatures of 20 and 40.
- the acetic acid content was measured at 60 ° C.
- the appearance of the expandable particles at that time was visually observed to evaluate shrinkage and curing. Table 6 summarizes the results.
- this foam can provide a biodegradable foam that can be used not only alone but also in a molded shape for use as a heat insulating material, a buffer material, a wall material, a sound absorbing material, and various packaging materials. High value.
- this foam can provide a biodegradable foam free of unpleasant acetic acid odor in applications such as heat insulating materials, cushioning materials, wall materials, sound absorbing materials, and various packaging materials, not only in a single form but also in a molded shape. Therefore, it is extremely high in industrial value.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Biological Depolymerization Polymers (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69813175T DE69813175T2 (de) | 1997-09-05 | 1998-08-28 | Biologisch abbaubare celluloseacetatschäume und verfahren zu deren herstellung |
US09/297,265 US6221924B1 (en) | 1997-09-05 | 1998-08-28 | Biodegradable cellulose acetate foam and process for its production |
EP98940622A EP0940243B1 (en) | 1997-09-05 | 1998-08-28 | Biodegradable cellulose acetate foams and process for producing the same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9/240853 | 1997-09-05 | ||
JP24085697 | 1997-09-05 | ||
JP9/240856 | 1997-09-05 | ||
JP24085397 | 1997-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999012723A1 true WO1999012723A1 (en) | 1999-03-18 |
Family
ID=26534965
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/003860 WO1999012723A1 (en) | 1997-09-05 | 1998-08-28 | Biodegradable cellulose acetate foams and process for producing the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US6221924B1 (ja) |
EP (1) | EP0940243B1 (ja) |
KR (1) | KR20000068911A (ja) |
DE (1) | DE69813175T2 (ja) |
WO (1) | WO1999012723A1 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7005181B2 (en) * | 2000-04-06 | 2006-02-28 | American Aerogel Corporation | Organic, open cell foam materials, their carbonized derivatives, and methods for producing same |
WO2002074842A1 (en) * | 2001-03-16 | 2002-09-26 | American Aerogel Corporation | Organic, open cell foam materials, |
KR100648930B1 (ko) * | 2005-09-16 | 2006-11-27 | 삼성전자주식회사 | 화상형성장치용 도전성 전사롤러 |
US20080307592A1 (en) * | 2007-06-18 | 2008-12-18 | Daniel Joseph Cornelius | Biodegradable, chemical toliet training and cleaning system |
AT509268A1 (de) | 2009-12-30 | 2011-07-15 | Sunpor Kunststoff Gmbh | Expandierbare polymerisate aus celluloseacetatbutyrat |
US8691126B2 (en) * | 2011-01-18 | 2014-04-08 | Wisconsin Alumni Research Foundation | Method of fabricating an injection molded component |
AT511509A1 (de) | 2011-04-18 | 2012-12-15 | Sunpor Kunststoff Gmbh | Expandierbare polymerisate aus celluloseacetatbutyrat und styrolpolymerisat |
DE112013001864A5 (de) | 2012-04-02 | 2015-03-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung von Lebensmittelverpackungen und nach diesem Verfahren hergestellte Lebensmittelverpackung |
US9630346B2 (en) | 2013-03-05 | 2017-04-25 | Wisconsin Alumni Research Foundation | Method of fabricating an injection molded component |
DE102013005300A1 (de) | 2013-03-27 | 2014-10-02 | Frank van Lück | Verwendung eines schaumextrudierten Biokunststoffs und auf Biokunststoffen basierendes Dämmelement |
US9555564B2 (en) | 2013-11-11 | 2017-01-31 | Wisconsin Alumni Research Foundation | Method of fabricating a foamed, injection molded component with improved ductility and toughness |
KR20220131959A (ko) * | 2020-01-20 | 2022-09-29 | 이스트만 케미칼 컴파니 | 셀룰로스 아세테이트로 제조된 생분해성 조성물 및 물품 |
KR20220131295A (ko) * | 2020-01-20 | 2022-09-27 | 이스트만 케미칼 컴파니 | 셀룰로스 아세테이트로 제조된 생분해성 조성물 및 물품 |
WO2022266305A1 (en) * | 2021-06-18 | 2022-12-22 | Eastman Chemical Company | Biodegradable cellulose acetate foams |
CN117881727A (zh) * | 2021-09-03 | 2024-04-12 | 伊士曼化工公司 | 乙酸纤维素泡沫 |
WO2023220007A1 (en) * | 2022-05-09 | 2023-11-16 | Cryovac, Llc | Sustainable foam |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04142344A (ja) * | 1990-09-26 | 1992-05-15 | Aeterna Lichte Gmbh & Co Kg | 生物学的に分解可能な合成樹脂材料及びその包装材 |
JPH06335919A (ja) * | 1993-05-27 | 1994-12-06 | Oji Seitai Kk | 澱粉を主原料とするバラ状緩衝材の製造方法 |
JPH0859892A (ja) * | 1994-08-08 | 1996-03-05 | Novamont Spa | 生分解性発泡プラスチック材料とその製造方法 |
JPH08151469A (ja) * | 1994-11-25 | 1996-06-11 | Nippon Synthetic Chem Ind Co Ltd:The | 射出発泡用樹脂組成物及びその成形体 |
JPH10100264A (ja) * | 1996-09-26 | 1998-04-21 | Teijin Ltd | 生分解性発泡体成形物の製造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH438712A (de) | 1963-12-14 | 1967-06-30 | Bayer Ag | Verfahren zur Herstellung von geschäumten thermoplastischen Materialien |
US4376752A (en) * | 1975-09-02 | 1983-03-15 | The United States Of America As Represented By The United States Department Of Energy | Foam encapsulated targets |
JP2965887B2 (ja) * | 1995-05-12 | 1999-10-18 | 帝人株式会社 | 酢酸セルロース系発泡体の製造法 |
JP3415970B2 (ja) * | 1995-08-22 | 2003-06-09 | 帝人株式会社 | 水質浄化材 |
JP3318216B2 (ja) * | 1996-09-26 | 2002-08-26 | 帝人株式会社 | 生分解性発泡体粒子及びその製造方法 |
-
1998
- 1998-08-28 KR KR1019997003983A patent/KR20000068911A/ko active IP Right Grant
- 1998-08-28 EP EP98940622A patent/EP0940243B1/en not_active Expired - Lifetime
- 1998-08-28 WO PCT/JP1998/003860 patent/WO1999012723A1/ja active IP Right Grant
- 1998-08-28 DE DE69813175T patent/DE69813175T2/de not_active Expired - Fee Related
- 1998-08-28 US US09/297,265 patent/US6221924B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04142344A (ja) * | 1990-09-26 | 1992-05-15 | Aeterna Lichte Gmbh & Co Kg | 生物学的に分解可能な合成樹脂材料及びその包装材 |
JPH06335919A (ja) * | 1993-05-27 | 1994-12-06 | Oji Seitai Kk | 澱粉を主原料とするバラ状緩衝材の製造方法 |
JPH0859892A (ja) * | 1994-08-08 | 1996-03-05 | Novamont Spa | 生分解性発泡プラスチック材料とその製造方法 |
JPH08151469A (ja) * | 1994-11-25 | 1996-06-11 | Nippon Synthetic Chem Ind Co Ltd:The | 射出発泡用樹脂組成物及びその成形体 |
JPH10100264A (ja) * | 1996-09-26 | 1998-04-21 | Teijin Ltd | 生分解性発泡体成形物の製造方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0940243A4 * |
Also Published As
Publication number | Publication date |
---|---|
DE69813175T2 (de) | 2004-03-04 |
EP0940243A1 (en) | 1999-09-08 |
KR20000068911A (ko) | 2000-11-25 |
EP0940243B1 (en) | 2003-04-09 |
US6221924B1 (en) | 2001-04-24 |
DE69813175D1 (de) | 2003-05-15 |
EP0940243A4 (en) | 2000-04-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1999012723A1 (en) | Biodegradable cellulose acetate foams and process for producing the same | |
JP2749918B2 (ja) | 生分解性生成物およびその製造方法 | |
JP3595560B2 (ja) | フィルム形成デンプン含有重合体組成物、該組成物から製造される形成物品および該物品の製法 | |
WO2003046060A1 (fr) | Feuille expansee continue en resine biodegradable reticulee et procede de fabrication | |
JPH03199245A (ja) | 微生物崩壊性熱可塑性樹脂発泡体及びその製造方法 | |
EP2940070B1 (en) | Molded article of polylactic acid-based resin expanded beads | |
JP2002524636A5 (ja) | ||
JP2007262145A (ja) | 発泡成形体およびその製造方法ならびにその再生方法 | |
WO1999065977A1 (de) | Aus biologisch abbaubaren werkstoffen geschäumte, thermoplastische folie | |
JP3921548B2 (ja) | セルロースアセテート生分解性発泡体及びその製造方法 | |
JP2001200084A (ja) | 生分解性でかつ機械的特性や熱賦形性にも優れたセルロース・アセテート系樹脂発泡体、及び生分解性でかつ機械的特性や寸法安定性にも優れたセルロース・アセテート系樹脂発泡成形品 | |
EP4119606A1 (en) | Foam sheet, product, and method for producing foam sheet | |
EP4097172B1 (en) | Foamed sheet, manufacture, and method for producing foamed sheet | |
JPH11140220A (ja) | セルロースアセテート生分解性発泡体及びその製造方法 | |
JP2001181429A (ja) | 生分解性でかつ機械的特性や熱賦形性にも優れたセルロース・アセテート系樹脂発泡体及びその製造方法、並びに生分解性でかつ機械的特性や寸法安定性にも優れたセルロース・アセテート系樹脂発泡成形品及びその製造方法 | |
JP2000086793A (ja) | セルロースアセテート発泡体及びその製造方法 | |
JPH11279311A (ja) | 分解性樹脂発泡体 | |
JP3680935B2 (ja) | 生分解性発泡体シート及びその製造方法 | |
JP3944733B2 (ja) | 植物性材料を主成分とする成型可能なシート状発泡体及びその製法 | |
JPH10100264A (ja) | 生分解性発泡体成形物の製造方法 | |
JPH11279271A (ja) | 樹脂ペレットの製造方法 | |
JP6928592B2 (ja) | 改質されたポリ乳酸樹脂の製造方法、ポリ乳酸樹脂およびポリ乳酸樹脂発泡シート | |
JP2024031659A (ja) | 発泡シート、製造物及び発泡シートの製造方法 | |
JPH10265607A (ja) | 生分解性発泡体成形物の製造方法 | |
JP2024065512A (ja) | ポリ乳酸発泡シート及びその製造方法、並びに、製造物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): KR US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09297265 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998940622 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1019997003983 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1999 297265 Date of ref document: 19990528 Kind code of ref document: A Format of ref document f/p: F |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWP | Wipo information: published in national office |
Ref document number: 1998940622 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1019997003983 Country of ref document: KR |
|
WWG | Wipo information: grant in national office |
Ref document number: 1998940622 Country of ref document: EP |
|
WWG | Wipo information: grant in national office |
Ref document number: 1019997003983 Country of ref document: KR |