JP5658186B2 - 中空射出成形体の製造方法 - Google Patents
中空射出成形体の製造方法 Download PDFInfo
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- JP5658186B2 JP5658186B2 JP2012037374A JP2012037374A JP5658186B2 JP 5658186 B2 JP5658186 B2 JP 5658186B2 JP 2012037374 A JP2012037374 A JP 2012037374A JP 2012037374 A JP2012037374 A JP 2012037374A JP 5658186 B2 JP5658186 B2 JP 5658186B2
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- resin
- water
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- injection
- mold
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- 238000002347 injection Methods 0.000 title claims description 88
- 239000007924 injection Substances 0.000 title claims description 88
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 229920005989 resin Polymers 0.000 claims description 126
- 239000011347 resin Substances 0.000 claims description 108
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 108
- 238000000034 method Methods 0.000 claims description 37
- 239000012530 fluid Substances 0.000 claims description 27
- 239000002344 surface layer Substances 0.000 claims description 25
- 229920005992 thermoplastic resin Polymers 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 19
- 239000011261 inert gas Substances 0.000 claims description 16
- 238000001746 injection moulding Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims description 6
- 238000005429 filling process Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000004734 Polyphenylene sulfide Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920000069 polyphenylene sulfide Polymers 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 239000004952 Polyamide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920002647 polyamide Polymers 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 229920000704 biodegradable plastic Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Description
一方、中空の射出成形体の製造方法として、金型キャビティに充填された樹脂に対して、水を圧入して、水圧により溶融樹脂を金型内面に向かって押付けて圧接させつつ冷却することにより樹脂を固化させ、所定の形状を有する中空の射出成形体を製造する、所謂水アシスト成形法が知られている。このため、水アシスト成形法を利用して熱可塑性樹脂による中空射出成形体を成形し、これを金属製パイプ部材に置き換えようとする試みがなされている。
2 加熱ヒーター
3 攪拌シリンダー
4 スクリュー
6 注入孔
7 超臨界流体注入機構
8 超臨界流体発生部
9 注入バルブ
13 キャビティ
14 金型
18 水注入機構
20 水注入バルブ
21 注水孔
31 樹脂貯留部
32 抜き取り孔
33 中空部
34 中空射出成形体
R1 熱可塑性樹脂
R2 混合樹脂
B 気泡
C 樹脂中心部
S 樹脂表層部
Claims (1)
- 中空射出成形体を射出成形によって製造する製造方法であって、
攪拌シリンダー内で、溶融した熱可塑性樹脂中に超臨界流体を攪拌混合して混合樹脂を生成する混合樹脂生成過程と、
攪拌シリンダーから混合樹脂を射出すると共に、混合樹脂を金型の内面が形成するキャビティに充填する充填過程と、
金型外部からキャビティに貫通する注水孔に設置された水注入バルブを介して、混合樹脂が充填されたキャビティに、不活性ガスを水に先行させて注入し、その後水を圧入する注水過程と、
キャビティに圧入された水によって、キャビティに充填された混合樹脂のうち、キャビティの軸線に沿った樹脂中心部を金型に設けられた抜き取り孔からキャビティ外へ押し出すと共に、金型の内面に圧接されてなる樹脂表層部を残存させる中空部形成過程と、
前記樹脂表層部を冷却して固化させる冷却過程とを有する
ことを特徴とする中空射出成形体の製造方法。
Priority Applications (1)
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---|---|---|---|
JP2012037374A JP5658186B2 (ja) | 2012-02-23 | 2012-02-23 | 中空射出成形体の製造方法 |
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JP2012037374A JP5658186B2 (ja) | 2012-02-23 | 2012-02-23 | 中空射出成形体の製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2013173233A JP2013173233A (ja) | 2013-09-05 |
JP5658186B2 true JP5658186B2 (ja) | 2015-01-21 |
Family
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JP2012037374A Active JP5658186B2 (ja) | 2012-02-23 | 2012-02-23 | 中空射出成形体の製造方法 |
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JP (1) | JP5658186B2 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP3372379B1 (en) * | 2015-11-06 | 2021-03-31 | Bando Chemical Industries, Ltd. | Molded-foam production process and molded foam |
CN106363874B (zh) * | 2016-08-29 | 2018-09-18 | 天津市华天世纪机械有限公司 | 一种复合材料的成型模具 |
WO2019187050A1 (ja) * | 2018-03-30 | 2019-10-03 | 豊田合成株式会社 | 中空樹脂成形品の製造方法及び中空樹脂成形品の製造装置 |
DE102020207987A1 (de) | 2020-06-29 | 2021-12-30 | Robert Bosch Gesellschaft mit beschränkter Haftung | Freistehendes Haushaltsgerät mit einem Untergestell zur Aufnahme von Gewichtskassetten |
CN113246396A (zh) * | 2021-06-22 | 2021-08-13 | 山东奥扬新能源科技股份有限公司 | 一种瓶体塑料配件成型机 |
CN114434596B (zh) * | 2021-12-22 | 2023-11-21 | 萍乡市慧成精密机电有限公司 | 一种陶瓷注射成形拨叉的制造方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5919017B2 (ja) * | 1979-05-02 | 1984-05-02 | 旭化成株式会社 | 中空物品の製造方法 |
JP2000094468A (ja) * | 1998-09-24 | 2000-04-04 | Idemitsu Petrochem Co Ltd | 軽量成形品、被覆軽量成形品およびその製造方法 |
JP2002337186A (ja) * | 2001-05-21 | 2002-11-27 | Mitsui Chemicals Inc | 射出成形機または押出機の材料供給方法 |
JP2010110934A (ja) * | 2008-11-04 | 2010-05-20 | Shisuko:Kk | 中空品の成形装置及び成形方法 |
EP2737989B1 (en) * | 2011-07-26 | 2021-05-05 | Sanoh Industrial Co., Ltd. | Method and device for producing pipe member |
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- 2012-02-23 JP JP2012037374A patent/JP5658186B2/ja active Active
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