JP5367884B2 - 板状部分付き管状発泡成形体及びその成形方法 - Google Patents
板状部分付き管状発泡成形体及びその成形方法 Download PDFInfo
- Publication number
- JP5367884B2 JP5367884B2 JP2012159053A JP2012159053A JP5367884B2 JP 5367884 B2 JP5367884 B2 JP 5367884B2 JP 2012159053 A JP2012159053 A JP 2012159053A JP 2012159053 A JP2012159053 A JP 2012159053A JP 5367884 B2 JP5367884 B2 JP 5367884B2
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- Prior art keywords
- plate
- tubular
- foamed molded
- main body
- tube
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Links
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
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- B29C49/04104—Extrusion blow-moulding extruding the material discontinuously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/06905—Using combined techniques for making the preform
- B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets
- B29C49/06914—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets using parallel sheets as a preform
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/62—Venting means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/24—Pipe joints or couplings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
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- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
- B29L2031/601—Multi-tubular articles, i.e. composed of a plurality of tubes
- B29L2031/602—Multi-tubular articles, i.e. composed of a plurality of tubes composed of several elementary tubular elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
- B29L2031/7492—Intake manifold
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Ceramic Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Description
特にエアコンからの空気を通風させるためのダクトでは、管状の発泡成形体を用いることにより、断熱性に優れ、軽量なダクトを実現することができる。さらに、こうしたダクトでは、製造時の発泡倍率を上げて発泡体内部の気泡を多くすることにより、断熱性、軽量さをさらに向上させることができるため、より効果的である。
ここで、上述のように管状発泡体の製造時に溶融樹脂P8の発泡倍率を高め、かつ、板状部分Y8については高い構造的強度を持たせようとすると、分割金型での型締めの際に板状部分Y8を押圧し、発泡樹脂P8内の気泡を押し潰すようにすることとなる。
また、例えば内部を通過する気体の速度などによっては、異音や振動を引き起こしてしまう問題があった。さらに、こぶ81内の気泡が粗大化して破泡が発生すると、異音や振動がさらに大きくなる問題があった。
管本体と、管本体の外側に連接された板状部分とを有する管状発泡成形体であって、
管状発泡成形体は、溶融状態の発泡樹脂を分割金型で挟み込んで成形されたものであり、
上記成形において板状部分における管本体との連接面近傍に板状部分内の気泡セルの管本体側への移動を堰き止める凹部が形成されたことを特徴とする。
まず、図1〜図3を参照しながら、本実施形態により成形する管状発泡成形体100の構成例について説明する。図1は全体斜視図、図2は嵌め合い部102a周りの平面図、図3は図2のD−D’断面図である。
管本体X1の内側は、流体を流通させる流路を有するよう構成され、エアコンユニットの冷暖風を流通させられるようになっている。
また、フランジ部103aには、嵌め合い部102aにより接続される他の管状部材に対して固定するための固定用孔107aが開設される。この固定用孔107aに不図示のボルトを貫通させてナットで締め付けることにより、接続する他の管状部材に対して管状発泡成形体100を固定することができる。
また、フランジ部103bには、嵌め合い部102bにより接続される他の管状部材に対して固定するための固定用孔107bが開設される。この固定用孔107bに不図示のボルトを貫通させてナットで締め付けることにより、接続する他の管状部材に対して管状発泡成形体100を固定することができる。
また、フランジ部103cには、嵌め合い部102cにより接続される他の管状部材に対して固定するための固定用孔107cが開設される。この固定用孔107cに不図示のボルトを貫通させてナットで締め付けることにより、接続する他の管状部材に対して管状発泡成形体100を固定することができる。
また、フランジ部103dには、嵌め合い部102dにより接続される他の管状部材に対して固定するための固定用孔107dが開設される。この固定用孔107dに不図示のボルトを貫通させてナットで締め付けることにより、接続する他の管状部材に対して管状発泡成形体100を固定することができる。
引張破壊伸び:後述する本実施形態の製造方法により得られた管状発泡成形体100の管本体X1を切り出し、−10℃で保管後に、JIS K−7113に準じて2号形試験片として引張速度を50mm/分で測定を行った値を引張破壊伸びとした。
引張弾性率:後述する本実施形態の製造方法により得られた管状発泡成形体100の管本体X1を切り出し、常温(23℃)で、JIS K−7113に準じて2号形試験片として引張速度を50mm/分で測定を行った値を引張弾性率とした。
次に、図4〜図6を参照しながら、本実施形態の管状発泡成形体100の製造方法例について説明する。図4は分割金型の開状態、図5は閉状態を金型側面から示し、図6は、閉状態を2つの分割金型の当接面から分割金型12a側について示す断面図である。
これにより、吹き込み針14から圧縮気体を発泡パリソン13の内部に吹き込み、発泡パリソン13の内部を経由して吹き出し針15から圧縮気体を吹き出し、所定のブロー圧にてブロー成形を行うことができる。
また、吹き出し針15は、上述のように管状発泡成形体100の嵌め合い部102(102a〜d)の開口部それぞれから突き刺すため、図6に示すように、分割金型12a、12bの当接面から分割金型12a、12b内に挿入される。
このため、吹き出し針15としては、図7(b)に示すロケット針を使用することが好ましい。ロケット針は、吹き込み/吹き出し方向が針の差込方向と交差する方向になるよう形成されている。
発泡パリソン13は、上述のように発泡倍率2.5倍以上で複数の気泡セルを有する独立気泡構造(独立気泡率が70%以上)で構成され、気泡セルの平均気泡径は300μm未満、好ましくは100μm未満となっているが、板状部分Y1では、これら気泡セルにも型締めによる押圧力Zがかけられる。
このため、板状部分Y1がキャビティ面10a、10b間の厚みまで圧縮され、管本体X1の内側部分には空間が空いた状態であっても、この凸部18が気泡セルの移動に対してダムとして機能し、気泡セルの移動をこの凸部18で堰き止める。このため、板状部分Y1内の気泡セルは、型締めによる押圧で移動したとしても板状部分Y1内部に留まり、そのまま分割金型12a、12bにより冷却されることとなる。
また、流路逆方向に比べて、流路方向Fに向かって流体が流れやすい通気路205を有する管状発泡成形体100を製造することができる。この流路方向Fは、管状発泡成形体100の流路A,B−1,B−2,Cにおける流体の流通方向と同方向になっているため、各流路における流体の流通方向に向かって流体が流れやすい管状発泡成形体100を製造することができる。
次に、上述した実施形態を適用した具体的な一実施例について、図10を参照して説明する。ただし、以下に説明する実施例は一例であり、以下の実施例に限定するものではない。
次に、本実施形態の管状発泡成形体100による効果について、凹溝106が形成されていない従来の板状部分付き管状発泡成形体と対比しながら説明する。
この問題が発生してしまうと、成形された板状部分付き管状発泡成形体は、発生したこぶの部分を1つ1つ手作業で削り落としていく以外には全く使用不可能となってしまう。このため、作業員が手作業で削り落とすためのコストを考慮すると、量産品としては不良品として扱わざるを得ず、板状部分付き管状発泡成形体を安価に大量生産することは困難となっていた。
このため、高い発泡倍率の溶融樹脂を用いた断熱性の高い軽量な管状発泡成形体100を、低コストで、正確な寸法精度で大量生産することができる。
このため、管状発泡成形体100がエアコンのダクトとして用いられる場合にも、優れた断熱性と軽量さの両方を実現でき、同時にフランジ部分で他の部材と接続するための構造的強度も十分に確保することができる。
本実施形態によれば、発泡パリソン13の発泡倍率を2.5倍以上として製造しても、管本体X1内側へのこぶの発生を確実に抑えることができ、設計通りの形状の成形品を得ることができる。
次に、上述した実施形態としての管状発泡成形体100の他の製造方法について、図11を参照して説明する。
こうした樹脂シートの厚み、押出速度、押出方向の肉厚等の調整は、公知の各種方法を用いてよい。
こうして嵌め合い部102との連接部近傍にだけ凹溝106を形成する構成によっても、上述のように、嵌め合い部102の内側にこぶの発生がなく、他の管状部材との嵌め合わせを確実に行うことができる管状発泡成形体100を安価に大量生産することができる。
このため、一方の面および他方の面から互い違いに凹溝106を形成した構成であっても、上述のように板状部分Y1の剛性を高めることができると共に、上述した実施形態と同様の効果を得ることができる。
このように凹溝106を形成することにより、上述のように分割金型で発泡パリソンを型締めして管状発泡成形体100を成形する際に、凹溝106の部分で気泡セルの移動を堰き止める堰き止め力をより強化することができる。このため、より確実に、板状部分Y1内部の気泡セルを板状部分Y1内部に留まらせることができる。
また、このように点状の凹部を形成する場合についても、上述のように一方の面および他方の面から互い違いに凹部を形成することにより、上述のように剛性を向上させることができる。
101 管部
102 嵌め合い部
103 フランジ部
104 橋渡し部
105 供給口
106 凹溝(凹部の一例)
107 固定用孔
10a、10b キャビティ面
11 環状ダイス
12a、12b 分割金型
13 発泡パリソン
14 吹き込み針
15 吹き出し針
16 レギュレータ
17 背圧レギュレータ
18 凸部
A,B,C,F 流路方向
20 油圧モーター
21 ホッパ
22 シリンダ
24 アキュムレータ
26 プランジャー
28 Tダイ
29 ダイボルト
30 調整ローラ
50 押出装置
X1 管本体
Y1 板状部分
Z 型締めによる押圧力
Claims (8)
- 管本体と、前記管本体の外側に連接された板状部分とを有する管状発泡成形体であって、
前記管状発泡成形体は、溶融状態の発泡樹脂を分割金型で挟み込んで成形されたものであり、
前記成形において前記板状部分における前記管本体との連接面近傍に前記板状部分内の気泡セルの前記管本体側への移動を堰き止める凹部が形成されたことを特徴とする板状部分付き管状発泡成形体。 - 前記凹部は、前記発泡樹脂を前記分割金型で挟み込んで前記管状発泡成形体を成形する際に前記分割金型に設けられた凸部により形成された凹溝であることを特徴とする請求項1に記載の板状部分付き管状発泡成形体。
- 前記凹部は、前記管本体との連接面に沿う形状として形成されたことを特徴とする請求項1または2記載の板状部分付き管状発泡成形体。
- 前記凹部は、前記板状部分における縁端部近傍には形成されておらず、前記板状部分は、所定の構造的強度を有することを特徴とする請求項1から3の何れか1項に記載の板状部分付き管状発泡成形体。
- 前記管本体は、他の管状部材を内側に接続させるための嵌め合い部を備え、
前記板状部分は、前記管本体における前記嵌め合い部の少なくとも一部を含む部分の外側に連接されて設けられ、
前記凹部は、前記板状部分における前記嵌め合い部との連接面近傍の少なくとも一部を含む部分に形成されたことを特徴とする請求項1から4の何れか1項に記載の板状部分付き管状発泡成形体。 - 前記凹部は、前記板状部分における一方の面および他方の面から、前記管本体との連接面に沿う形状となるよう互い違いに形成されたことを特徴とする請求項1から5の何れか1項に記載の板状部分付き管状発泡成形体。
- 管本体と、前記管本体の外側に連接された板状部分とを有する管状発泡成形体の成形方法であって、
溶融状態の発泡樹脂を分割金型で挟み込んで前記管状発泡成形体を成形し、
前記成形において前記板状部分における前記管本体との連接面近傍に前記板状部分内の気泡セルの前記管本体側への移動を堰き止める凹部を形成することを特徴とする管状発泡成形体の成形方法。 - 前記発泡樹脂を前記分割金型で挟み込んで前記管状発泡成形体を成形する際に前記分割金型に設けられた凸部により前記凸部の形状に対応する前記凹部を形成することを特徴とする請求項7に記載の管状発泡成形体の成形方法。
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JP5053907B2 (ja) * | 2008-03-31 | 2012-10-24 | キョーラク株式会社 | 軽量空調ダクト |
JP6541938B2 (ja) * | 2013-05-14 | 2019-07-10 | 株式会社ジェイエスピー | ダクト |
JP6212834B2 (ja) * | 2013-05-16 | 2017-10-18 | キョーラク株式会社 | 管状発泡成形体及びその製造方法 |
JP6150339B2 (ja) * | 2013-10-11 | 2017-06-21 | 株式会社イノアックコーポレーション | ダクト連結構造 |
JP6331390B2 (ja) * | 2013-12-27 | 2018-05-30 | キョーラク株式会社 | 発泡成形体 |
JP6344056B2 (ja) * | 2014-05-23 | 2018-06-20 | キョーラク株式会社 | 発泡成形体 |
FR3036767B1 (fr) * | 2015-06-01 | 2017-12-22 | Peugeot Citroen Automobiles Sa | Raccord fluidique a plusieurs voies pour vehicule automobile |
CN108025480B (zh) | 2015-09-28 | 2019-10-29 | 京洛株式会社 | 发泡成型体的制造方法 |
JP6369947B2 (ja) * | 2015-11-04 | 2018-08-08 | 株式会社イノアックコーポレーション | ダクト及びダクトの製造方法 |
CN105650392B (zh) * | 2015-12-29 | 2018-02-06 | 西安建科门窗有限责任公司 | 窗载风机用90°矩形消音降噪弯头及弯头的消声处理方法 |
CN105650393B (zh) * | 2015-12-29 | 2018-02-06 | 西安建筑科技大学 | 一种消声降噪燕尾三通弯头及弯头的消声处理方法 |
CN107116989A (zh) * | 2016-02-24 | 2017-09-01 | 日本富拉司特株式会社 | 中空成型品 |
JP6974694B2 (ja) * | 2017-04-07 | 2021-12-01 | キョーラク株式会社 | 成形品及びその製造方法 |
US11241807B2 (en) | 2016-09-28 | 2022-02-08 | Kyoraku Co., Ltd. | Molded article and manufacturing method for same |
CN108347117B (zh) * | 2017-01-25 | 2021-10-22 | 珠海格力电器股份有限公司 | 一种电机压板以及空调器室内机 |
EP3828454B1 (en) | 2018-07-26 | 2023-10-25 | Kyoraku Co., Ltd. | Tubular formed body |
KR102586935B1 (ko) * | 2018-11-28 | 2023-10-11 | 현대자동차주식회사 | 방수펠트 덕트의 제조 방법 및 이에 의해 제조된 방수펠트 덕트 |
BR112021026336A2 (pt) * | 2019-06-27 | 2022-03-03 | Moxietec Llc | Artigos de espuma de polímero e métodos para produzir espumas de polímero |
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BE885312A (fr) * | 1979-11-15 | 1981-01-16 | Morel Atel Electromec | Manchon pour proteger l'epissure de cables electriques ou telephoniques |
JPS59152822A (ja) * | 1983-02-21 | 1984-08-31 | Kyoraku Co Ltd | 筒状の止部を有するブロ−成形品及びその製造方法 |
US4865777A (en) * | 1986-09-19 | 1989-09-12 | Automatic Liquid Packaging, Inc. | Manufacture of humidifier container |
JPH08300447A (ja) * | 1995-05-08 | 1996-11-19 | Toyoda Gosei Co Ltd | フューエルインレットパイプ及びその製造方法 |
DE19637925C2 (de) * | 1995-09-18 | 2003-04-30 | Toyoda Gosei Kk | Kunstharzrohr und Blasformverfahren zu dessen Herstellung |
JP3622483B2 (ja) * | 1998-03-13 | 2005-02-23 | マツダ株式会社 | 車両の空調装置 |
JP4071373B2 (ja) * | 1998-09-12 | 2008-04-02 | 株式会社イノアックコーポレーション | 車両用ダクトおよびその製造方法 |
JP4329915B2 (ja) * | 1999-10-26 | 2009-09-09 | 株式会社イノアックコーポレーション | 空調ダクトの接続構造 |
JP2001201160A (ja) * | 2000-01-19 | 2001-07-27 | Inoac Corp | リブ付きダクト及びその製造方法 |
JP4438450B2 (ja) * | 2003-04-07 | 2010-03-24 | 株式会社デンソー | 配管継手装置およびその組付方法 |
JP4776879B2 (ja) * | 2003-12-26 | 2011-09-21 | キョーラク株式会社 | 発泡ダクトの成形方法 |
DE102006060144A1 (de) * | 2006-12-18 | 2008-06-19 | Mahle International Gmbh | Verfahren und Vorrichtung zum Herstellen eines Rohrs |
JP5025549B2 (ja) * | 2008-03-31 | 2012-09-12 | キョーラク株式会社 | 発泡ブロー成形品およびその製造方法 |
JP2009257501A (ja) * | 2008-04-17 | 2009-11-05 | Mirai Ind Co Ltd | 給水湯用の継手 |
JP5493834B2 (ja) | 2009-12-25 | 2014-05-14 | キョーラク株式会社 | フロアダクト、輸送機及び成形方法 |
JP2011188856A (ja) | 2010-03-11 | 2011-09-29 | Samsung Techwin Co Ltd | リアルタイムpcrのための核酸テンプレートの製造 |
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ES2668020T3 (es) | 2018-05-16 |
US20130052377A1 (en) | 2013-02-28 |
PL2565011T3 (pl) | 2018-08-31 |
US9435301B2 (en) | 2016-09-06 |
EP2565011A2 (en) | 2013-03-06 |
JP2013063639A (ja) | 2013-04-11 |
CN102966822B (zh) | 2015-03-04 |
KR101389654B1 (ko) | 2014-04-28 |
KR20130024838A (ko) | 2013-03-08 |
MX2012010003A (es) | 2013-03-06 |
EP2565011A3 (en) | 2014-03-26 |
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