JP7474405B2 - 発泡樹脂シートの成形方法 - Google Patents
発泡樹脂シートの成形方法 Download PDFInfo
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- JP7474405B2 JP7474405B2 JP2020093965A JP2020093965A JP7474405B2 JP 7474405 B2 JP7474405 B2 JP 7474405B2 JP 2020093965 A JP2020093965 A JP 2020093965A JP 2020093965 A JP2020093965 A JP 2020093965A JP 7474405 B2 JP7474405 B2 JP 7474405B2
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- resin sheet
- foamed resin
- mold
- molding
- core
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- 229920005989 resin Polymers 0.000 title claims description 113
- 239000011347 resin Substances 0.000 title claims description 113
- 238000000034 method Methods 0.000 title claims description 19
- 238000000465 moulding Methods 0.000 claims description 28
- -1 polyethylene Polymers 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 14
- 229920001684 low density polyethylene Polymers 0.000 claims description 10
- 239000004702 low-density polyethylene Substances 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 8
- 229920001155 polypropylene Polymers 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 7
- 229920000573 polyethylene Polymers 0.000 claims description 7
- 239000002356 single layer Substances 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 claims 1
- 239000004088 foaming agent Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000005482 strain hardening Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010097 foam moulding Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
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- Molding Of Porous Articles (AREA)
Description
2 気泡
30,40 金型
30A,40A 真空吸引孔
50 微細孔
Claims (4)
- 溶融状態の発泡樹脂シートを金型を用いて成形する工程を備える発泡樹脂シートの成形方法であって、
前記発泡樹脂シートは、ポリプロピレンにポリエチレンを50質量%以上配合した発泡樹脂シートであり、
溶融状態の発泡樹脂シートを一対の金型で挟み込み、各金型を発泡樹脂シートにそれぞれ接触させた後、3~5秒後に真空吸引しながら各金型を後退させることを特徴とする発泡樹脂シートの成形方法。 - 前記ポリエチレンは低密度ポリエチレンであることを特徴とする請求項1記載の発泡樹脂シートの成形方法。
- 前記発泡樹脂シートは単層の発泡樹脂シートであり、前記一対の金型にそれぞれ真空吸引孔が形成されていることを特徴とする請求項1または2記載の発泡樹脂シートの成形方法。
- 前記工程により形成された片面側のスキン層に直径1mm以下の微細な穴を開け、連続気泡へ通気させることを特徴とする請求項1~3のいずれか1項記載の発泡樹脂シートの成形方法。
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JP2020093965A JP7474405B2 (ja) | 2020-05-29 | 2020-05-29 | 発泡樹脂シートの成形方法 |
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JP2020093965A JP7474405B2 (ja) | 2020-05-29 | 2020-05-29 | 発泡樹脂シートの成形方法 |
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JP2021187039A JP2021187039A (ja) | 2021-12-13 |
JP7474405B2 true JP7474405B2 (ja) | 2024-04-25 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003018677A1 (fr) | 2001-08-31 | 2003-03-06 | Honda Motor Co., Ltd. | Composition elastomere thermoplastique pour moussage par injection et procede de moussage par injection utilisant ladite composition |
JP2006082472A (ja) | 2004-09-17 | 2006-03-30 | Sumitomo Chemical Co Ltd | 熱可塑性樹脂発泡シートの真空成形方法 |
JP2013231099A (ja) | 2012-04-27 | 2013-11-14 | Mitsui Chemicals Inc | プロピレン系重合体、プロピレン系重合体組成物、予備発泡粒子発泡成形体、射出発泡成形体およびそれらの製造方法 |
JP2015189412A (ja) | 2014-03-28 | 2015-11-02 | キョーラク株式会社 | 車両用ダクト部材及びその製造方法 |
JP2017132103A (ja) | 2016-01-27 | 2017-08-03 | キョーラク株式会社 | 成形方法及び成形体 |
JP2019098567A (ja) | 2017-11-29 | 2019-06-24 | キョーラク株式会社 | 構造体及びその製造方法 |
JP2020093965A (ja) | 2018-12-14 | 2020-06-18 | 昭和電工株式会社 | SiC単結晶の製造装置及びSiC単結晶製造用の構造体 |
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2020
- 2020-05-29 JP JP2020093965A patent/JP7474405B2/ja active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003018677A1 (fr) | 2001-08-31 | 2003-03-06 | Honda Motor Co., Ltd. | Composition elastomere thermoplastique pour moussage par injection et procede de moussage par injection utilisant ladite composition |
JP2006082472A (ja) | 2004-09-17 | 2006-03-30 | Sumitomo Chemical Co Ltd | 熱可塑性樹脂発泡シートの真空成形方法 |
JP2013231099A (ja) | 2012-04-27 | 2013-11-14 | Mitsui Chemicals Inc | プロピレン系重合体、プロピレン系重合体組成物、予備発泡粒子発泡成形体、射出発泡成形体およびそれらの製造方法 |
JP2015189412A (ja) | 2014-03-28 | 2015-11-02 | キョーラク株式会社 | 車両用ダクト部材及びその製造方法 |
JP2017132103A (ja) | 2016-01-27 | 2017-08-03 | キョーラク株式会社 | 成形方法及び成形体 |
JP2019098567A (ja) | 2017-11-29 | 2019-06-24 | キョーラク株式会社 | 構造体及びその製造方法 |
JP2020093965A (ja) | 2018-12-14 | 2020-06-18 | 昭和電工株式会社 | SiC単結晶の製造装置及びSiC単結晶製造用の構造体 |
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