JP4685990B2 - 木粉含有樹脂成形体及びその製造方法 - Google Patents
木粉含有樹脂成形体及びその製造方法 Download PDFInfo
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- JP4685990B2 JP4685990B2 JP2009153439A JP2009153439A JP4685990B2 JP 4685990 B2 JP4685990 B2 JP 4685990B2 JP 2009153439 A JP2009153439 A JP 2009153439A JP 2009153439 A JP2009153439 A JP 2009153439A JP 4685990 B2 JP4685990 B2 JP 4685990B2
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- wood powder
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- 239000002023 wood Substances 0.000 title claims description 129
- 239000000843 powder Substances 0.000 title claims description 106
- 229920005989 resin Polymers 0.000 title claims description 69
- 239000011347 resin Substances 0.000 title claims description 69
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 229920005992 thermoplastic resin Polymers 0.000 claims description 76
- 239000012530 fluid Substances 0.000 claims description 43
- 239000011342 resin composition Substances 0.000 claims description 43
- 239000006260 foam Substances 0.000 claims description 42
- 235000013312 flour Nutrition 0.000 claims description 21
- 239000002245 particle Substances 0.000 claims description 10
- 239000011148 porous material Substances 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical group O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 230000009477 glass transition Effects 0.000 claims description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 description 9
- 241000218691 Cupressaceae Species 0.000 description 6
- 238000005187 foaming Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- -1 polyethylene Polymers 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 241000218645 Cedrus Species 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 241001117244 Chamaecyparis formosensis Species 0.000 description 1
- 240000005109 Cryptomeria japonica Species 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000736892 Thujopsis dolabrata Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Claims (3)
- 木粉を含む熱可塑性樹脂からなり、表面に形成された非発泡層と内部に形成された発泡層とを備える木粉含有樹脂成形体において、
該木粉含有樹脂成形体は、熱可塑性樹脂100重量部に対し、平均粒子径が1〜1000μmの範囲の木粉を、30〜70重量部の範囲で含むと共に、
該発泡層は、表面に近い側から順に、平均径が10〜100μmの気泡を備える第1の発泡層と、平均径が5〜50μmの第1の発泡層より平均孔径の小さな気泡を備える第2の発泡層と、平均径が20〜500μmの第1の発泡層より平均孔径の大きな気泡を備える第3の発泡層とからなることを特徴とする木粉含有樹脂成形体。 - 溶融状態の熱可塑性樹脂100重量部に対し、平均粒子径が1〜1000μmの範囲の木粉を、30〜70重量部の範囲となるように混合して木粉含有熱可塑性樹脂組成物を形成する工程と、
該木粉含有熱可塑性樹脂組成物に、超臨界状態の流体を該木粉含有熱可塑性樹脂組成物の0.05〜2質量%の範囲で加圧下に含浸する工程と、
該超臨界状態の流体が含浸された該木粉含有熱可塑性樹脂組成物を所定形状のキャビティに射出する工程と、
該キャビティに射出された該木粉含有熱可塑性樹脂組成物の圧力が該流体の臨界圧力未満になったときに、該キャビティの容積を拡大して、該木粉含有熱可塑性樹脂組成物の圧力を、該木粉含有熱可塑性樹脂組成物の温度の低下に伴う圧力の低減速度よりも大きな第1の速度で低減させる工程と、
さらに、該キャビティの容積を拡大して、該木粉含有熱可塑性樹脂組成物の圧力を第1の速度よりも小さな第2の速度で低減させる工程と、
該木粉含有熱可塑性樹脂組成物の温度が、該熱可塑性樹脂のガラス転位温度Tgに70℃を加えた温度以下になる前に、該キャビティの容積を縮小して、該木粉含有熱可塑性樹脂組成物の圧力を増加させる工程とを備えることを特徴とする木粉含有樹脂成形体の製造方法。 - 請求項2記載の木粉含有樹脂成形体の製造方法において、前記超臨界状態の流体は、二酸化炭素または窒素であることを特徴とする木粉含有樹脂成形体の製造方法。
Priority Applications (6)
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JP2009153439A JP4685990B2 (ja) | 2009-06-29 | 2009-06-29 | 木粉含有樹脂成形体及びその製造方法 |
CN201080029438.2A CN102470576B (zh) | 2009-06-29 | 2010-06-07 | 含木粉的树脂成型体及其制造方法 |
US13/381,362 US8361612B2 (en) | 2009-06-29 | 2010-06-07 | Wood powder-containing resin molded product and method for producing the same |
PCT/JP2010/059593 WO2011001791A1 (ja) | 2009-06-29 | 2010-06-07 | 木粉含有樹脂成形体及びその製造方法 |
CA 2764098 CA2764098C (en) | 2009-06-29 | 2010-06-07 | Wood powder-containing resin molded article and method for producing the same |
EP20100793961 EP2441558B1 (en) | 2009-06-29 | 2010-06-07 | Wood powder-containing resin molded article |
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JP2009153439A JP4685990B2 (ja) | 2009-06-29 | 2009-06-29 | 木粉含有樹脂成形体及びその製造方法 |
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JP2011005811A JP2011005811A (ja) | 2011-01-13 |
JP4685990B2 true JP4685990B2 (ja) | 2011-05-18 |
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JP6043897B1 (ja) * | 2015-11-06 | 2016-12-14 | バンドー化学株式会社 | 発泡成形品の製造方法及び発泡成形品 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001179903A (ja) * | 1999-12-24 | 2001-07-03 | Jsp Corp | 積層発泡シート及び容器 |
JP2003193586A (ja) * | 2001-12-28 | 2003-07-09 | Dow Kakoh Kk | ポリスチレン系樹脂押出発泡体からなる建築用断熱材 |
JP2004017285A (ja) * | 2002-06-12 | 2004-01-22 | Japan Steel Works Ltd:The | 薄肉発泡成形体の成形方法及び薄肉発泡成形体並びに発泡体成形装置 |
JP2007130826A (ja) * | 2005-11-09 | 2007-05-31 | Sekisui Chem Co Ltd | 射出発泡成形体の製造方法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001179903A (ja) * | 1999-12-24 | 2001-07-03 | Jsp Corp | 積層発泡シート及び容器 |
JP2003193586A (ja) * | 2001-12-28 | 2003-07-09 | Dow Kakoh Kk | ポリスチレン系樹脂押出発泡体からなる建築用断熱材 |
JP2004017285A (ja) * | 2002-06-12 | 2004-01-22 | Japan Steel Works Ltd:The | 薄肉発泡成形体の成形方法及び薄肉発泡成形体並びに発泡体成形装置 |
JP2007130826A (ja) * | 2005-11-09 | 2007-05-31 | Sekisui Chem Co Ltd | 射出発泡成形体の製造方法 |
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