JP5282273B2 - マイクロチップ及びマイクロチップの製造方法 - Google Patents
マイクロチップ及びマイクロチップの製造方法 Download PDFInfo
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- B81C99/00—Subject matter not provided for in other groups of this subclass
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- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
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- B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
- B01L3/502—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures
- B01L3/5027—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip
- B01L3/502707—Containers for the purpose of retaining a material to be analysed, e.g. test tubes with fluid transport, e.g. in multi-compartment structures by integrated microfluidic structures, i.e. dimensions of channels and chambers are such that surface tension forces are important, e.g. lab-on-a-chip characterised by the manufacture of the container or its components
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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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
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- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
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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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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
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- B81—MICROSTRUCTURAL TECHNOLOGY
- B81B—MICROSTRUCTURAL DEVICES OR SYSTEMS, e.g. MICROMECHANICAL DEVICES
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
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Description
(樹脂製基板の構成)
以下、この発明を実施するための最良の形態について図面を用いて説明する。図1は、この発明の第1実施形態に係る樹脂製基板の平面図、図2は樹脂製基板の断面図である。
(射出成形金型)
次に、樹脂製基板の射出成形金型の構成について図3を参照して説明する。図3は、射出成形金型の断面図である。
(型締め工程)
可動側金型である他方の金型22を固定側金型である一方の金型21に近づけ、両方の金型21、22を合わせる。他方の金型22の凹部222を一方の金型21で塞ぐことにより、キャビティが形成される。
(構成工程)
テーパー部231は凹部222内にあって、一方の金型21に向けて突出していて、貫通孔15を成形するための他方の金型22の一部を構成する。一方の金型21に突出したテーパー部231は、基板10の一方の面11(成形品の接合面)を形成する一方の金型21一部に接触している。
(射出工程)
次に、キャビティに樹脂材を充填することにより、基板10である成形品を成形する。基板10の一方の面11には、微細流路が形成される。基板10には貫通孔15が形成される。微細流路の高転写性の要求から、射出成形は、成形圧を高く、射出速度を早くして行われる。他方の金型22に基板10の他方の面12及び筒状部13の外壁131が密着し、また、他方の金型22の一部を構成し、面粗し加工されたテーパー部231に貫通孔15の内壁151が密着する。さらに、一方の金型21に基板10の一方の面11が密着する。
(離間工程)
次に、可動側金型である他方の金型22を固定側金型である一方の金型21から遠ざける。成形品に対する密着面積が他方の金型22より一方の金型21の方が小さいため、他方の金型22を一方の金型21から離間させると、基板10の一方の面11(成形品の接合面)が一方の金型21から離れる。
(突出し工程)
次に、他方の金型22の凹部222内から一方の金型21に向けて(図2に示すA1方向)、さらに突出させたテーパー部231で貫通孔15の内壁151を突き出すことにより、基板10の他方の面12(成形品の平面)を他方の金型22から離す。基板10は、貫通孔15の内壁151がテーパー部231に密着したままで、他方の金型22から離される。
(没入工程)
次に、コアピン23を突出させた方向とは反対側(図3に示すA2方向)へ移動させる。それにより、貫通孔15の入口周縁部152(筒状部13の先端部14)が下穴221の周縁部に当接し、さらに、コアピン23を前記反対側へ移動させると、下穴221の周縁部が貫通孔15の入口周縁部152(筒状部13の先端部14)を相対的に押し出す。それにより、テーパー部231を貫通孔15から抜き、貫通孔15の内壁151から離す。前工程である押出工程において、筒状部13の外壁131が他方の金型22から離型しているので、全体的な離型抵抗が少なく、筒状部13の離型変形を防止可能となる。また、貫通孔15の内壁151の第1傾斜角度θ1の絶対値が、筒状部13の外壁131の第2傾斜角度θ2の絶対値より大きいので、テーパー部231を貫通孔15から抜くとき、離型抵抗が少なく、この点からも、筒状部13の離型変形を防止可能となる。以上により、基板10である成形品は、金型との密着部分の全てが離れ、基板10である成形品を取り出すことができる。
[第2実施形態]
次に、この発明の第2実施形態に係る樹脂製基板について、図4を参照にして説明する。
[第3実施形態]
次に、この発明の第3実施形態に係る樹脂製基板について説明する。
(実施例1)
第1傾斜角度θ1:2°
第2傾斜角度θ2:0°
(実施例2)
第1傾斜角度θ1:3°
第2傾斜角度θ2:1°
(実施例3)
第1傾斜角度θ1:5°
第2傾斜角度θ2:3°
(実施例4)
第1傾斜角度θ1:7°
第2傾斜角度θ2:5°
(比較例1)
第1傾斜角度θ1:4°
第2傾斜角度θ2:6°
次に、各実施例において、筒状部を狭いピッチで配置することの難易について説明する。
θ2 第2傾斜角度
10 基板
11 一方の面(接合面)
111 微細流路
12 他方の面
13 筒状部
131 筒状部の外壁
14 筒状部の先端部
141 凸状部
15 貫通孔
151 貫通孔の内壁
152 入口周縁部
20 射出成形金型
21 一方の金型
22 他方の金型
221 下穴
222 凹部
23 コアピン
231 テーパー部
232 円柱部
Claims (3)
- 基板の一方の面に複数の微細流路が形成され、前記基板の他方の面から突設して設けられた1又は複数の筒状部と、該筒状部の中心軸に沿って、該筒状部の先端部から前記微細流路に向けて孔の内壁の径を第1傾斜角度で徐々に小さくするように貫通し、前記微細流路に連通する貫通孔と、を有し射出成形により成形された樹脂製基板と、
該樹脂製基板の微細流路が形成されている一方の面に接合された樹脂製のカバー部材と、を有し、
前記筒状部の先端部から前記貫通孔を通じて液体試料を導入可能に構成したマイクロチップであって、
前記液体試料が導入される筒状部の先端側の肉厚は、前記筒状部が形成される基板面側の前記筒状部の肉厚より薄く形成され、
前記筒状部は、当該筒状部の先端部から前記他方の面に向けて前記筒状部の外壁の径を第2傾斜角度で徐々に大きくさせた略円錐台形状に形成されていると共に、前記筒状部の外壁は、前記第2傾斜角度が0度より大きく5度以下となるように形成され、
前記貫通孔の内壁は、前記第1傾斜角度の絶対値が前記第2傾斜角度の絶対値より大きくなるように形成されていることを特徴とするマイクロチップ。 - 前記第1傾斜角度が3度以上7度以下であることを特徴とする請求項1記載のマイクロチップ。
- 第1及び第2の金型を有し、前記第1及び第2金型を型合わせして形成されるキャビティに樹脂材を充填する事により、基板の一方の面に複数の微細流路と、他方の面に、当該他方の面から外方に突設して設けられた1又は複数の筒状部と、該筒状部の中心軸に沿って、該筒状部の先端部から前記微細流路に向けて孔の内壁の径を第1傾斜角度で徐々に小さくするように貫通し、前記微細流路に連通する貫通孔と、を有する樹脂製基板を成形する成形工程と、
前記成形工程後、成形された樹脂製基板を金型から離型する離型工程と、
前記離型工程で離型した樹脂製基板の微細流路が形成されている一方の面に樹脂製カバー部材を接合する接合工程と、を有するマイクロチップの製造方法であって、
前記第1及び第2の金型の内、一方の金型には前記微細流路を形成する部分が構成されており、他方の金型には前記筒状部形成に対応する凹部と共に、当該凹部内に前記貫通孔を形成するための前記第1傾斜角度に対応するテーパー形状を成すピンを前記一方の金型に向かって突設して構成するものであり、
前記成形工程は前記他方の金型のピン先端部を前記一方の金型の微細流路形成部分に接触させて樹脂材を充填し、
前記離型工程では前記他方の金型のピンを前記微細流路形成部分との接触位置から前記一方の金型に向けて更に突出させる事により樹脂製基板を前記他方の金型から離型させることを特徴とするマイクロチップの製造方法。
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JP5805989B2 (ja) * | 2011-04-26 | 2015-11-10 | 大塚電子株式会社 | 電気泳動移動度測定用セル並びにそれを用いた測定装置及び測定方法 |
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