JP6884480B2 - 繊維強化熱可塑性樹脂からなる成形品の成形方法および成形装置 - Google Patents
繊維強化熱可塑性樹脂からなる成形品の成形方法および成形装置 Download PDFInfo
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Description
請求項2に記載の発明は、請求項1に記載の成形方法において、前記成形工程は前記成形用金型を型開きした状態で前記繊維強化熱可塑性樹脂を射出し、あるいは型開きした状態で前記繊維強化熱可塑性樹脂を所定量挿入し、その後圧縮成形により成形することを特徴とする繊維強化熱可塑性樹脂からなる成形品の成形方法として構成される。
請求項3に記載の発明は、繊維強化熱可塑性樹脂から成形品を成形する成形装置であって、加熱シリンダを有し、前記加熱シリンダ内で熱可塑性樹脂が溶融されて強化繊維と混練され第1の温度の繊維強化熱可塑性樹脂を得る可塑化装置と、所定量の前記繊維強化熱可塑性樹脂から一次成形品を成形する成形用金型と、搬送装置と、冷却用金型とを備え、前記可塑化装置から射出された所定量の前記繊維強化熱可塑性樹脂が、前記第1の温度よりも低い第2の温度の前記成形用金型によって前記一次成形品に成形され、前記一次成形品は前記搬送装置により前記成形用金型から取り出されて前記冷却用金型に搬送され、前記冷却用金型において圧縮・冷却されて成形品が得られるようになっている、繊維強化熱可塑性樹脂から成形品を成形する成形装置として構成される。
請求項4に記載の発明は、請求項3に記載の成形装置において、前記成形用金型は圧縮成形用の金型からなり、型開きした状態で所定量の前記繊維強化熱可塑性樹脂が射出され、あるいは型開きした状態で所定量の前記繊維強化熱可塑性樹脂が挿入され、その後圧縮されるようになっていることを特徴とする繊維強化熱可塑性樹脂から成形品を成形する成形装置として構成される。
実験方法:本実施の形態に係る成形装置1において、可塑化装置2と第1の型締装置17とを使用して2個の成形品A、Bを成形した。成形の条件は以下とした。成形品の形状は、300mm×300mm×3mmの平板とした。熱可塑性樹脂としてナイロン6を、強化繊維として炭素繊維を使用した。添加した強化繊維の割合は体積比で30%になるように、すなわち体積比で熱可塑性樹脂70に対して強化繊維が30になるようにした。可塑化装置2によって繊維強化熱可塑性樹脂を得、これを成形用金型4に射出して圧縮成形した。射出時における繊維強化熱可塑性樹脂の温度は260℃とし、成形用金型4の温度は140℃になるように調整した。圧縮成形における型締圧力は22MPaになるようにし、20秒間型締めを実施した。成形用金型4を型開後、成形品Aについては搬送装置6によって冷却用金型5に搬送・インサートし、冷却用金型5を型締めして冷却した。冷却用金型5による型締圧力は1.2MPaになるようにし、300秒間型締めを実施した。つまり成形品Aは、本発明の実施の形態に係る成形方法により成形したことになる。一方、成形品Bについては成形用金型4を型開後、取り出して放置した。つまり成形品Bは、従来の成形方法により成形したことになる。
実験結果:成形品A、Bについて曲げ試験を行って、曲げ弾性率と曲げ強度とを得た。成形品Aは、曲げ弾性率が21.2GPa、曲げ強度が384MPaであった。一方成形品Bは、曲げ弾性率が14.8GPa、曲げ強度が304MPaであった。
考察:繊維強化熱可塑性樹脂から成形品を成形するとき、本実施の形態に係る成形方法を実施すると、従来の成形方法に比して曲げ弾性率で約43%、曲げ強度で約26%も強度が増加することが分かった。強度が増加した正確な理由は分からないが、従来の成形方法で成形すると樹脂中に分散している強化繊維がスプリングバックして強化繊維に対する樹脂の含浸の度合いが減少する一方、本発明の実施の形態に係る成形方法で成形するとスプリングバックが抑制された可能性がある。ただし、スプリングバックの度合いが大きいと成形品の寸法に影響が出るはずであるが、成形品Aと成形品Bの板厚を測定したが、板厚に差は無かった。スプリングバックの度合いが小さくても強度に与える影響が大きい可能性もある。
4 成形用金型 5 冷却用金型
6 搬送装置 8 加熱シリンダ
9 スクリュ 11 ホッパ
12 強化繊維投入口 14 強化繊維ロール
15 切断装置 17 第1の型締装置
18 ノズル 20 ハンド
22 第2の型締装置
Claims (4)
- 繊維強化熱可塑性樹脂からなる成形品の成形方法であって、
加熱シリンダを有する可塑化装置により、加熱シリンダ内で熱可塑性樹脂を溶融して強化繊維と混練して第1の温度の繊維強化熱可塑性樹脂を得、
前記可塑化装置から射出された所定量の前記繊維強化熱可塑性樹脂を、前記第1の温度よりも低い第2の温度の成形用金型によって成形して一次成形品を得る成形工程と、
前記成形用金型を型開きして前記一次成形品を取出して冷却用金型にインサートする搬入工程と、
前記冷却用金型により圧縮して前記一次成形品を冷却し、成形品を得る圧縮冷却工程とを含む、繊維強化熱可塑性樹脂からなる成形品の成形方法。 - 請求項1に記載の成形方法において、前記成形工程は前記成形用金型を型開きした状態で前記繊維強化熱可塑性樹脂を射出し、あるいは前記成形用金型を型開きした状態で前記繊維強化熱可塑性樹脂を所定量挿入し、その後圧縮成形により成形する、繊維強化熱可塑性樹脂からなる成形品の成形方法。
- 繊維強化熱可塑性樹脂から成形品を成形する成形装置であって、
加熱シリンダを有し、前記加熱シリンダ内で熱可塑性樹脂が溶融されて強化繊維と混練され第1の温度の繊維強化熱可塑性樹脂を得る可塑化装置と、所定量の前記繊維強化熱可塑性樹脂から一次成形品を成形する成形用金型と、搬送装置と、冷却用金型とを備え、
前記可塑化装置から射出された所定量の前記繊維強化熱可塑性樹脂が、前記第1の温度よりも低い第2の温度の前記成形用金型によって前記一次成形品に成形され、
前記一次成形品は前記搬送装置により前記成形用金型から取り出されて前記冷却用金型に搬送され、前記冷却用金型において圧縮・冷却されて成形品が得られるようになっている、繊維強化熱可塑性樹脂から成形品を成形する成形装置。 - 請求項3に記載の成形装置において、前記成形用金型は圧縮成形用の金型からなり、型開きした状態で所定量の前記繊維強化熱可塑性樹脂が射出され、あるいは型開きした状態で所定量の前記繊維強化熱可塑性樹脂が挿入され、その後圧縮されるようになっている、繊維強化熱可塑性樹 脂から成形品を成形する成形装置。
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| JP2017180833A JP6884480B2 (ja) | 2017-09-21 | 2017-09-21 | 繊維強化熱可塑性樹脂からなる成形品の成形方法および成形装置 |
| KR1020207007439A KR102286093B1 (ko) | 2017-09-21 | 2018-09-21 | 섬유 강화 열가소성 수지로 이루어지는 성형품의 성형 방법 및 성형 장치 |
| CN201880060872.3A CN111093928B (zh) | 2017-09-21 | 2018-09-21 | 含纤维增强热塑性树脂的模制制品的模制方法和模制设备 |
| EP18859529.2A EP3685981B1 (en) | 2017-09-21 | 2018-09-21 | Molding method and molding apparatus of molded article comprising fiber-reinforced thermoplastic resin |
| US16/649,472 US11472082B2 (en) | 2017-09-21 | 2018-09-21 | Molding method and molding apparatus of molded article comprising fiber-reinforced thermoplastic resin |
| PCT/JP2018/035171 WO2019059371A1 (ja) | 2017-09-21 | 2018-09-21 | 繊維強化熱可塑性樹脂からなる成形品の成形方法および成形装置 |
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| KR102467655B1 (ko) * | 2021-04-29 | 2022-11-18 | 송혜선 | 드럼 세탁기 도어용 투영부재의 제조방법 |
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| JP3348172B2 (ja) * | 1997-08-05 | 2002-11-20 | アラコ株式会社 | 繊維弾性体の成形方法 |
| US6186769B1 (en) | 1999-04-06 | 2001-02-13 | Woodshed Technologies | Resin and fiber compounding apparatus for molding operations |
| JP2006110920A (ja) * | 2004-10-18 | 2006-04-27 | Institute Of Physical & Chemical Research | マイクロ成形加工装置および方法 |
| CN1850490A (zh) * | 2006-05-19 | 2006-10-25 | 林军 | 纤维增强热塑性塑料螺杆挤出机的短纤维加料装置 |
| JP2009202561A (ja) * | 2008-01-30 | 2009-09-10 | Fujifilm Corp | プレス加工用前駆体及びその製造方法 |
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| CN103238382A (zh) * | 2010-10-06 | 2013-08-07 | 因特瓦产品有限责任公司 | 用于提供具有电磁干扰屏蔽的增强复合材料的方法和设备 |
| DE102012012470A1 (de) * | 2012-06-21 | 2013-12-24 | Faurecia Innenraum Systeme Gmbh | Verfahren und Vorrichtung zur Herstellung eines Innenverkleidungsteils |
| EP2987603B2 (en) | 2013-04-15 | 2020-11-18 | U-MHI PLATECH Co., Ltd. | Injection molding apparatus and injection molding method |
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| US20160101543A1 (en) | 2013-12-03 | 2016-04-14 | The Boeing Company | Hybrid Laminate and Molded Composite Structures |
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| US9731436B2 (en) * | 2014-09-22 | 2017-08-15 | Mary Anderle | Blended fiber pad |
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| JP2017039243A (ja) * | 2015-08-19 | 2017-02-23 | アイシン精機株式会社 | 射出成形装置 |
| US9777597B1 (en) | 2016-03-30 | 2017-10-03 | Borgwarner Inc. | Turbocharger bearing fluid film surface and method |
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| JP2019055519A (ja) | 2019-04-11 |
| US20200298457A1 (en) | 2020-09-24 |
| KR102286093B1 (ko) | 2021-08-05 |
| CN111093928B (zh) | 2022-05-10 |
| EP3685981A1 (en) | 2020-07-29 |
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| EP3685981B1 (en) | 2023-03-08 |
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