JP2009107276A5 - - Google Patents

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Publication number
JP2009107276A5
JP2009107276A5 JP2007283748A JP2007283748A JP2009107276A5 JP 2009107276 A5 JP2009107276 A5 JP 2009107276A5 JP 2007283748 A JP2007283748 A JP 2007283748A JP 2007283748 A JP2007283748 A JP 2007283748A JP 2009107276 A5 JP2009107276 A5 JP 2009107276A5
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Japan
Prior art keywords
resin
molding method
injection molding
gas containing
filling step
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JP2007283748A
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Japanese (ja)
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JP2009107276A (en
JP5311797B2 (en
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Publication of JP2009107276A5 publication Critical patent/JP2009107276A5/ja
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Claims (6)

ノズル先端の樹脂経路が開放されたオープンノズルを用いて、溶融した熱可塑性樹脂を金型に充填する樹脂充填工程と、該金型に充填された樹脂を保圧する樹脂保圧工程と、該樹脂を冷却する樹脂冷却工程と、を少なくとも有する射出成形方法であって、
該樹脂充填工程の間に、二酸化炭素または炭化水素を含む気体を該金型に注入開始することを特徴とする射出成形方法。 A resin filling step of filling a mold with a molten thermoplastic resin using an open nozzle having a resin path at the tip of the nozzle, a resin pressure holding step for holding the resin filled in the die, and the resin A resin cooling step for cooling the at least one injection molding method,
An injection molding method characterized by starting injection of a gas containing carbon dioxide or hydrocarbon into the mold during the resin filling step. 前記二酸化炭素または炭化水素を含む気体の金型への注入開始時間は、前記樹脂充填工程における可塑化スクリューの位置によって、または前記樹脂充填工程の開始後の時間によって制御されることを特徴とする請求項１に記載の射出成形方法。 The injection start time of the gas containing carbon dioxide or hydrocarbon into the mold is controlled by the position of the plasticizing screw in the resin filling step or by the time after the start of the resin filling step. The injection molding method according to claim 1. 前記樹脂充填工程において、前記二酸化炭素または炭化水素を含む気体の圧力が０．１ＭＰａ以上１５ＭＰａ以下になった時点における前記熱可塑性樹脂のフローフロントは、スプルの内部にあることを特徴とする請求項１または２に記載の射出成形方法。 The flow front of the thermoplastic resin when the pressure of the gas containing carbon dioxide or hydrocarbon becomes 0.1 MPa or more and 15 MPa or less in the resin filling step is inside the sprue. 3. The injection molding method according to 1 or 2. 前記樹脂充填工程が終了するまで、前記炭化水素を含む気体の圧力は０．１ＭＰａ以上１５ＭＰａ以下に保持されることを特徴とする請求項１から３のいずれか１項に記載の射出成形方法。   The injection molding method according to any one of claims 1 to 3, wherein a pressure of the gas containing the hydrocarbon is maintained at 0.1 MPa or more and 15 MPa or less until the resin filling step is completed. 前記炭化水素を含む気体は、メタン、エタン、プロパンであることを特徴とする請求項１から４のいずれか１項に記載の射出成形方法。   The injection molding method according to any one of claims 1 to 4, wherein the gas containing hydrocarbons is methane, ethane, or propane. 請求項１から５のいずれか１項に記載の射出成形方法によって製作したことを特徴とする光学素子。   An optical element manufactured by the injection molding method according to any one of claims 1 to 5.
JP2007283748A 2007-10-31 2007-10-31 Optical element manufacturing method Active JP5311797B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007283748A JP5311797B2 (en) 2007-10-31 2007-10-31 Optical element manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007283748A JP5311797B2 (en) 2007-10-31 2007-10-31 Optical element manufacturing method

Related Child Applications (1)

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JP2013140506A Division JP5649695B2 (en) 2013-07-04 2013-07-04 Thermoplastic resin injection molding method

Publications (3)

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JP2009107276A JP2009107276A (en) 2009-05-21
JP2009107276A5 true JP2009107276A5 (en) 2010-12-16
JP5311797B2 JP5311797B2 (en) 2013-10-09

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JP2007283748A Active JP5311797B2 (en) 2007-10-31 2007-10-31 Optical element manufacturing method

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5793015B2 (en) * 2011-07-28 2015-10-14 キヤノン株式会社 Manufacturing method of molded products
JP5649695B2 (en) * 2013-07-04 2015-01-07 キヤノン株式会社 Thermoplastic resin injection molding method
TWI762355B (en) * 2021-06-11 2022-04-21 大立光電股份有限公司 Image capturing unit, camera module and electronic device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05269778A (en) * 1992-03-27 1993-10-19 Nippon Steel Chem Co Ltd Method for producing resin molded product by gas counter pressure molding method
JPH08336852A (en) * 1995-06-12 1996-12-24 Toshiba Chem Corp Manufacture of synthetic resin expanded molding having not expanded part
JP3349070B2 (en) * 1996-09-03 2002-11-20 旭化成株式会社 Molding method of thermoplastic resin
EP0914919B1 (en) * 1997-05-21 2004-12-29 Asahi Kasei Kabushiki Kaisha Method for injection molding of thermoplastic resins
JP3445778B2 (en) * 2000-08-11 2003-09-08 東北ムネカタ株式会社 Injection molding method
JP3880061B2 (en) * 2002-05-22 2007-02-14 日立マクセル株式会社 Method and apparatus for manufacturing molded article
JP3987486B2 (en) * 2003-12-26 2007-10-10 ムネカタ株式会社 Molding method of thermoplastic resin
JP2006327133A (en) * 2005-05-30 2006-12-07 Munekata Co Ltd Carbon dioxide injection device used for injection molding of thermoplastic resin
JP4285611B2 (en) * 2006-01-23 2009-06-24 ムネカタ株式会社 Molding equipment for injection molding for molding thermoplastic resin products

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