JPS58212921A - プラスチツクス中空成形物の成形方法 - Google Patents
プラスチツクス中空成形物の成形方法Info
- Publication number
- JPS58212921A JPS58212921A JP57096394A JP9639482A JPS58212921A JP S58212921 A JPS58212921 A JP S58212921A JP 57096394 A JP57096394 A JP 57096394A JP 9639482 A JP9639482 A JP 9639482A JP S58212921 A JPS58212921 A JP S58212921A
- Authority
- JP
- Japan
- Prior art keywords
- core mold
- molded product
- filler
- weight ratio
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 11
- 229920003023 plastic Polymers 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000000465 moulding Methods 0.000 title claims description 6
- 239000000945 filler Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000001993 wax Substances 0.000 abstract description 5
- 238000002844 melting Methods 0.000 abstract description 3
- 239000012188 paraffin wax Substances 0.000 abstract description 3
- 239000004576 sand Substances 0.000 abstract description 3
- 239000004568 cement Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 239000012784 inorganic fiber Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
- B29C33/52—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles soluble or fusible
-
- 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
- B29L2031/00—Other particular articles
- B29L2031/24—Pipe joints or couplings
- B29L2031/243—Elbows
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
め要約のデータは記録されません。
Description
【発明の詳細な説明】
本発明は管、継手、容器等のプラスチックス中空成形物
の成形方法に関するものである。
の成形方法に関するものである。
従来からロウ、パラフィン等の熱溶融性物質にて芯型を
形成し、該芯型の外周にプラスチックス、成形物を形成
した後、該芯型を加熱軟化せしめることによってプラス
チックス成形体内部より芯型を除去するプラスチックス
中空成形物の成形方法が行われている。しかし該方法に
よれはロウ、バ炭素繊維、セラミック繊維等の無機繊維
強化プラスチックス（ＦＲＰ）によって中空成形物を成
形する際には無機繊維が芯型に喰い込んで中空成形物内
面が平滑に仕上らなかったり、樹脂の硬化熱によって芯
型が変形、溶融したりして中空成形物内部形状が精度よ
く形成されなかったり中空成形物内面に肌荒れを生じた
りする欠点があった。
形成し、該芯型の外周にプラスチックス、成形物を形成
した後、該芯型を加熱軟化せしめることによってプラス
チックス成形体内部より芯型を除去するプラスチックス
中空成形物の成形方法が行われている。しかし該方法に
よれはロウ、バ炭素繊維、セラミック繊維等の無機繊維
強化プラスチックス（ＦＲＰ）によって中空成形物を成
形する際には無機繊維が芯型に喰い込んで中空成形物内
面が平滑に仕上らなかったり、樹脂の硬化熱によって芯
型が変形、溶融したりして中空成形物内部形状が精度よ
く形成されなかったり中空成形物内面に肌荒れを生じた
りする欠点があった。
本発明は上記欠点を改良して芯型の表面硬度、強度、耐
熱性等を向上せしめ、もって内面平滑な、かつ内面形状
精度のよいプラスチックス中空成形物を製造することを
目的とし、芯型に熱溶融性物質と充填材との混合物を用
いることを骨子とするものである。
熱性等を向上せしめ、もって内面平滑な、かつ内面形状
精度のよいプラスチックス中空成形物を製造することを
目的とし、芯型に熱溶融性物質と充填材との混合物を用
いることを骨子とするものである。
本発明を図に示す一実施例によって説明すれば、芯型（
１）は例えばパラフィン、ロウ、ワックス等の熱１１１
融物質と、砂、セメント、炭酸カルシウム、ベントナイ
ト、炭素粉、金属粉、無機繊維、炭素繊維、金属繊維等
の充填材とからなる。芯型（１）の軸芯にはバンドヒー
ター（２）が貫通せられる。芯型（１）の外周には八ツ
ドレイアップ法によってＦＲＰ成形物（３）が形成され
る。ＦＲＰ層が硬化したらバンドヒーター（２）に通電
して加熱すると芯型（１）のバンドヒーター（２）の周
りが溶解し、更に第２図に示すようにノズル（４）から
熱風を吠き出させると芯型（１）のバンドヒーター（２
）によって形成された空洞（１）Ａを熱風が通り抜けつ
つ芯型（１）を加熱し、芯型（１）全体が軟化してＦＲ
Ｐ成形物（３）（管継手）から芯型（１）が取出される
。熱風の代りにスチーム、熱湯、熱油等を空洞（１）
Ａに注入してもよい。なお芯型（１）において、熱溶融
性物質と充填材との混合重量比は２０ ： ８０〜７０
：３０とする。上記範囲以下に充填材が含まれる場合に
は充填材の補強効果が顕著でなく、上記範囲以上に充填
材が含まれる場合には充填材の熱溶融性物質による結着
が不充分で芯型が脆くなってしまう。最適な熱溶融性物
質と充填材との混合重量比は上記範囲内において、熱溶
融性物質と充填材の種類とによって変動する。
１）は例えばパラフィン、ロウ、ワックス等の熱１１１
融物質と、砂、セメント、炭酸カルシウム、ベントナイ
ト、炭素粉、金属粉、無機繊維、炭素繊維、金属繊維等
の充填材とからなる。芯型（１）の軸芯にはバンドヒー
ター（２）が貫通せられる。芯型（１）の外周には八ツ
ドレイアップ法によってＦＲＰ成形物（３）が形成され
る。ＦＲＰ層が硬化したらバンドヒーター（２）に通電
して加熱すると芯型（１）のバンドヒーター（２）の周
りが溶解し、更に第２図に示すようにノズル（４）から
熱風を吠き出させると芯型（１）のバンドヒーター（２
）によって形成された空洞（１）Ａを熱風が通り抜けつ
つ芯型（１）を加熱し、芯型（１）全体が軟化してＦＲ
Ｐ成形物（３）（管継手）から芯型（１）が取出される
。熱風の代りにスチーム、熱湯、熱油等を空洞（１）
Ａに注入してもよい。なお芯型（１）において、熱溶融
性物質と充填材との混合重量比は２０ ： ８０〜７０
：３０とする。上記範囲以下に充填材が含まれる場合に
は充填材の補強効果が顕著でなく、上記範囲以上に充填
材が含まれる場合には充填材の熱溶融性物質による結着
が不充分で芯型が脆くなってしまう。最適な熱溶融性物
質と充填材との混合重量比は上記範囲内において、熱溶
融性物質と充填材の種類とによって変動する。
特に充填材の種類は最適混合重量比に大きく影響する。
例えば充填材のうち比重の大なるものは上記範囲内で充
填材の重量比を比重の小さなものに比して増大させ得、
例えば比重の大なる金属粉では混合重量比は３０ ：
７０〜４０：６０程度が望ましく、比重の小なる炭酸カ
ルシウムでは混合重量比は６０：４０〜７０：３０程度
が望ましく、あるいは充填材のうち粒度の小なるものは
上記範囲内で充填材の重量比を粒度の大なるものに比し
て増大させ得、例えば粒度の小なるベントナイトでは混
合重量比け２０：８０〜４０：’６０程度が望ましく、
粒度の大なる砂では混合重量比は４０：６０〜６０：４
０程度が望ましい。
填材の重量比を比重の小さなものに比して増大させ得、
例えば比重の大なる金属粉では混合重量比は３０ ：
７０〜４０：６０程度が望ましく、比重の小なる炭酸カ
ルシウムでは混合重量比は６０：４０〜７０：３０程度
が望ましく、あるいは充填材のうち粒度の小なるものは
上記範囲内で充填材の重量比を粒度の大なるものに比し
て増大させ得、例えば粒度の小なるベントナイトでは混
合重量比け２０：８０〜４０：’６０程度が望ましく、
粒度の大なる砂では混合重量比は４０：６０〜６０：４
０程度が望ましい。
本発明は上記構成を有するから芯型において熱溶融性物
質が充填材によって補強され、熱溶融性を保持したまま
で良好な硬度、強度、耐熱性を与えることが可能であり
、もって内面の平滑でかつ内部形状精度の高いプラスチ
ックス中空成形物を得ることが可能となる。
質が充填材によって補強され、熱溶融性を保持したまま
で良好な硬度、強度、耐熱性を与えることが可能であり
、もって内面の平滑でかつ内部形状精度の高いプラスチ
ックス中空成形物を得ることが可能となる。
図は本発明の一実施例にかかるものであり、第１図は成
形時の断面図、第２図は芯型取出し時の断面図である。 図中 （１）・・・芯型 （３）・・ 成形物特許出願
人 アロン化成株式会社 牙 １ 図 オ ２ 日
形時の断面図、第２図は芯型取出し時の断面図である。 図中 （１）・・・芯型 （３）・・ 成形物特許出願
人 アロン化成株式会社 牙 １ 図 オ ２ 日
Claims (1)
- 熱溶融性物質と充填材との２０ ： ８０〜７０：３０
重量比の混合物によって芯型を形成し、該芯型の外周に
プラスチックス成形物を形成した後、該芯型を加熱軟化
せしめることによってプラスチックス成形物内部より芯
型を除去することを特徴とするプラスチックス中空成形
物の成形方法
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57096394A JPS58212921A (ja) | 1982-06-04 | 1982-06-04 | プラスチツクス中空成形物の成形方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57096394A JPS58212921A (ja) | 1982-06-04 | 1982-06-04 | プラスチツクス中空成形物の成形方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58212921A true JPS58212921A (ja) | 1983-12-10 |
| JPH0155082B2 JPH0155082B2 (ja) | 1989-11-22 |
Family
ID=14163737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57096394A Granted JPS58212921A (ja) | 1982-06-04 | 1982-06-04 | プラスチツクス中空成形物の成形方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58212921A (ja) |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61252895A (ja) * | 1985-04-30 | 1986-11-10 | Sekisui Chem Co Ltd | インペラ−の製造方法 |
| JPH02151411A (ja) * | 1988-12-02 | 1990-06-11 | Sintokogio Ltd | 中子の溶解排出装置 |
| JPH02167707A (ja) * | 1988-09-05 | 1990-06-28 | Ube Ind Ltd | 中子を用いた樹脂成形方法及び装置 |
| JPH04164609A (ja) * | 1990-10-30 | 1992-06-10 | Mitsubishi Motors Corp | 中空樹脂部材の製造方法 |
| US5135419A (en) * | 1991-03-01 | 1992-08-04 | Kahn Jon B | Method of encasing a non-linear atubular member |
| KR20010044653A (ko) * | 2001-03-13 | 2001-06-05 | 윤경수 | 파라핀을 이용한 우레탄 제품의 성형방법 |
| US7829025B2 (en) | 2001-03-28 | 2010-11-09 | Venture Lending & Leasing Iv, Inc. | Systems and methods for thermal actuation of microfluidic devices |
| US8043581B2 (en) | 2001-09-12 | 2011-10-25 | Handylab, Inc. | Microfluidic devices having a reduced number of input and output connections |
| US8071056B2 (en) * | 1995-09-15 | 2011-12-06 | The Regents Of The University Of Michigan | Thermal microvalves |
| US8088616B2 (en) | 2006-03-24 | 2012-01-03 | Handylab, Inc. | Heater unit for microfluidic diagnostic system |
| US8105783B2 (en) | 2007-07-13 | 2012-01-31 | Handylab, Inc. | Microfluidic cartridge |
| US8110158B2 (en) | 2001-02-14 | 2012-02-07 | Handylab, Inc. | Heat-reduction methods and systems related to microfluidic devices |
| US8182763B2 (en) | 2007-07-13 | 2012-05-22 | Handylab, Inc. | Rack for sample tubes and reagent holders |
| US8216530B2 (en) | 2007-07-13 | 2012-07-10 | Handylab, Inc. | Reagent tube |
| USD665095S1 (en) | 2008-07-11 | 2012-08-07 | Handylab, Inc. | Reagent holder |
| US8273308B2 (en) | 2001-03-28 | 2012-09-25 | Handylab, Inc. | Moving microdroplets in a microfluidic device |
| US8287820B2 (en) | 2007-07-13 | 2012-10-16 | Handylab, Inc. | Automated pipetting apparatus having a combined liquid pump and pipette head system |
| USD669191S1 (en) | 2008-07-14 | 2012-10-16 | Handylab, Inc. | Microfluidic cartridge |
| US8324372B2 (en) | 2007-07-13 | 2012-12-04 | Handylab, Inc. | Polynucleotide capture materials, and methods of using same |
| US8323900B2 (en) | 2006-03-24 | 2012-12-04 | Handylab, Inc. | Microfluidic system for amplifying and detecting polynucleotides in parallel |
| US8852862B2 (en) | 2004-05-03 | 2014-10-07 | Handylab, Inc. | Method for processing polynucleotide-containing samples |
| US8883490B2 (en) | 2006-03-24 | 2014-11-11 | Handylab, Inc. | Fluorescence detector for microfluidic diagnostic system |
| US8895311B1 (en) | 2001-03-28 | 2014-11-25 | Handylab, Inc. | Methods and systems for control of general purpose microfluidic devices |
| US9040288B2 (en) | 2006-03-24 | 2015-05-26 | Handylab, Inc. | Integrated system for processing microfluidic samples, and method of using the same |
| USD742027S1 (en) | 2011-09-30 | 2015-10-27 | Becton, Dickinson And Company | Single piece reagent holder |
| US9186677B2 (en) | 2007-07-13 | 2015-11-17 | Handylab, Inc. | Integrated apparatus for performing nucleic acid extraction and diagnostic testing on multiple biological samples |
| US9222954B2 (en) | 2011-09-30 | 2015-12-29 | Becton, Dickinson And Company | Unitized reagent strip |
| US9259735B2 (en) | 2001-03-28 | 2016-02-16 | Handylab, Inc. | Methods and systems for control of microfluidic devices |
| US9259734B2 (en) | 2007-07-13 | 2016-02-16 | Handylab, Inc. | Integrated apparatus for performing nucleic acid extraction and diagnostic testing on multiple biological samples |
| US9618139B2 (en) | 2007-07-13 | 2017-04-11 | Handylab, Inc. | Integrated heater and magnetic separator |
| USD787087S1 (en) | 2008-07-14 | 2017-05-16 | Handylab, Inc. | Housing |
| US9670528B2 (en) | 2003-07-31 | 2017-06-06 | Handylab, Inc. | Processing particle-containing samples |
| US9765389B2 (en) | 2011-04-15 | 2017-09-19 | Becton, Dickinson And Company | Scanning real-time microfluidic thermocycler and methods for synchronized thermocycling and scanning optical detection |
| US9815057B2 (en) | 2006-11-14 | 2017-11-14 | Handylab, Inc. | Microfluidic cartridge and method of making same |
| IT201700051356A1 (it) * | 2017-05-11 | 2018-11-11 | Hp Composites S R L | Sistema per la realizzazione di un modello per la produzione di un manufatto cavo in materiale composito. |
| US10822644B2 (en) | 2012-02-03 | 2020-11-03 | Becton, Dickinson And Company | External files for distribution of molecular diagnostic tests and determination of compatibility between tests |
| US10900066B2 (en) | 2006-03-24 | 2021-01-26 | Handylab, Inc. | Microfluidic system for amplifying and detecting polynucleotides in parallel |
| US11453906B2 (en) | 2011-11-04 | 2022-09-27 | Handylab, Inc. | Multiplexed diagnostic detection apparatus and methods |
| US11806718B2 (en) | 2006-03-24 | 2023-11-07 | Handylab, Inc. | Fluorescence detector for microfluidic diagnostic system |
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| JPS54156080A (en) * | 1978-05-31 | 1979-12-08 | Nitto Electric Ind Co Ltd | Manufacture of pipe connection member in tubular module |
| JPS5684931A (en) * | 1979-12-14 | 1981-07-10 | Nitto Electric Ind Co Ltd | Preparation of synthetic resin molding having curved space inside thereof |
| JPS56123845A (en) * | 1980-03-05 | 1981-09-29 | C-Chiyoo Kogyo Kk | Manufacturing method for injection molded product |
| JPS5882059A (ja) * | 1981-11-10 | 1983-05-17 | Toyota Motor Corp | インテ−クマニホ−ルド製造方法 |
-
1982
- 1982-06-04 JP JP57096394A patent/JPS58212921A/ja active Granted
Patent Citations (5)
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|---|---|---|---|---|
| JPS5150218A (ja) * | 1974-10-29 | 1976-05-01 | Kobe Steel Ltd | Suiyoseinakago |
| JPS54156080A (en) * | 1978-05-31 | 1979-12-08 | Nitto Electric Ind Co Ltd | Manufacture of pipe connection member in tubular module |
| JPS5684931A (en) * | 1979-12-14 | 1981-07-10 | Nitto Electric Ind Co Ltd | Preparation of synthetic resin molding having curved space inside thereof |
| JPS56123845A (en) * | 1980-03-05 | 1981-09-29 | C-Chiyoo Kogyo Kk | Manufacturing method for injection molded product |
| JPS5882059A (ja) * | 1981-11-10 | 1983-05-17 | Toyota Motor Corp | インテ−クマニホ−ルド製造方法 |
Cited By (109)
| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Publication date |
|---|---|
| JPH0155082B2 (ja) | 1989-11-22 |
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