JP2019055519A - 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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- 238000000034 method Methods 0.000 title claims abstract description 38
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/56—Means for plasticising or homogenising the moulding material or forcing it into the mould using mould parts movable during or after injection, e.g. injection-compression moulding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
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- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/56—Compression moulding under special conditions, e.g. vacuum
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
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- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
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- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
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Abstract
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、熱可塑性樹脂と強化繊維とが混練された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、前記成形装置は、熱可塑性樹脂と強化繊維とを混練して繊維強化熱可塑性樹脂を得る押出機または射出成形機からなる可塑化装置と、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、冷却用金型とからなり、前記成形用金型において成形された成形品は、前記搬送装置により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されて冷却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。
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)
- 熱可塑性樹脂と強化繊維とを混練して繊維強化熱可塑性樹脂を得、該繊維強化熱可塑性樹脂から成形品を得る成形方法であって、
前記成形方法は、所定量の前記繊維強化熱可塑性樹脂から成形用金型によって成形品を得る成形工程と、
前記成形用金型を型開きして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、
前記冷却用金型を所定の型締力で圧縮して前記成形品を冷却する圧縮冷却工程とからな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。 - 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。
- 熱可塑性樹脂と強化繊維とが混練された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、
前記成形装置は、熱可塑性樹脂と強化繊維とを混練して繊維強化熱可塑性樹脂を得る押出機または射出成形機からなる可塑化装置と、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、冷却用金型とからなり、
前記成形用金型において成形された成形品は、前記搬送装置により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されて冷却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。 - 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。
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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 |
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 |
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 |
KR1020207007439A KR102286093B1 (ko) | 2017-09-21 | 2018-09-21 | 섬유 강화 열가소성 수지로 이루어지는 성형품의 성형 방법 및 성형 장치 |
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KR20200041924A (ko) | 2020-04-22 |
EP3685981B1 (en) | 2023-03-08 |
US20200298457A1 (en) | 2020-09-24 |
EP3685981A4 (en) | 2021-06-23 |
CN111093928B (zh) | 2022-05-10 |
CN111093928A (zh) | 2020-05-01 |
WO2019059371A1 (ja) | 2019-03-28 |
US11472082B2 (en) | 2022-10-18 |
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