JP3212581B2 - Method for producing a reinforced powder shaped article by chemical bonding of the impregnation liquid - Google Patents

Method for producing a reinforced powder shaped article by chemical bonding of the impregnation liquid

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Publication number
JP3212581B2
JP3212581B2 JP34849199A JP34849199A JP3212581B2 JP 3212581 B2 JP3212581 B2 JP 3212581B2 JP 34849199 A JP34849199 A JP 34849199A JP 34849199 A JP34849199 A JP 34849199A JP 3212581 B2 JP3212581 B2 JP 3212581B2
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powder
shaped article
chemical bonding
liquid
reinforced
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JP2001162351A (en
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清隆 筒井
馨 續
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株式会社筒井プラスチック
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Process efficiency
    • Y02P10/25Process efficiency by increasing the energy efficiency of the process
    • Y02P10/29Additive manufacturing
    • Y02P10/292Additive manufacturing of casting moulds

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【発明の属する技術分野】本発明は、樹脂を含浸させることにより十分な実用強度を有する粉体造形品を迅速に成形することができる含浸液体の化学結合により補強された粉体造形品の製造方法に関するものである。 BACKGROUND OF THE INVENTION The present invention is the production of reinforced powder shaped article by chemical bonding of the impregnation liquid can be rapidly molded powder shaped article having a sufficient practical strength by impregnating a resin the method relates.

【0002】 [0002]

【従来の技術】従来から、プラスチック成形や各種鋳造技術の分野においては、最終製品の本生産に先立ち木型や石膏型などで成形した立体形状モデルを準備し、最終製品の成形可能性や強度確認やデザイン等の大まかなチェックを行うことが広く行われている。 BACKGROUND ART Conventionally, in the field of plastic molding and various casting techniques, a final product of a three-dimensional shape model molded in such wooden or plaster mold prior to the production and preparation, moldability and strength of the final product it has been widely carried out a rough check, such as a check and design. 特に最近では、 In particular, recently,
モデルを製作するのに要する期間の短縮およびコスト低減を図ることを目的に、従来の木型等に替え3次元CA For the purpose of shortening and cost reduction of the time required to fabricate the model, three-dimensional CA instead of the conventional wooden etc.
Dシステムで成形した粉体造形品を利用する安価な方法も提案されいる。 Inexpensive method of using the powder shaped articles molded with D systems is proposed.

【0003】ところが、この安価な粉体造形品は図面では現れにくい立体的なデザイン形状を視覚的に確認することを主目的としたものであり、最終製品の成形可能性や強度の確認などを実製品に近づけて精度よく行うことはできないものであった。 [0003] However, this inexpensive powder shaped article is for the main purpose of visually confirmed that the difficult three-dimensional design shape that appeared in the drawing, the confirmation of moldability and strength of the final product, etc. close to the actual product was achieved can not be performed accurately. 即ち、この粉体造形品は粉体間の結合が弱くて脆いために、嵌合状態や各種の機能性の実態的な調査をすることはできず、その上、粉体造形品をマスターモデルとしてシリコーンや石膏の注型型を製作する際には外表面に細かな凹凸や微細な開気孔があるため、離型が困難であるという問題点があった。 That is, in order the powder shaped articles brittle weak bonding between the powder, can not be the actual investigation of the functionality of a fitted state and various, Moreover, master model the powder shaped article in fabricating cast type silicone and gypsum because of the fine unevenness and fine open pores on the outer surface, the release there is a problem that it is difficult as a. また、例えばプラスチック製品の成形型のようなモデルの場合には、このモデルを使用して実際に最終製品を少量だけ成形したいという要求があるが、耐熱性や耐久性等の強度的な面でほとんど不可能であるという問題点があった。 Further, for example, in the case of the model, such as the mold of the plastic products, there is a demand for forming a small amount actually final product using this model, the strength of view such as heat resistance and durability there is a problem that is almost impossible.

【0004】 [0004]

【発明が解決しようとする課題】本発明は上記のような従来の問題点を解決して、十分な耐熱性や耐久性等の優れた強度を有し最終製品と同様の強度確認や各種の機能テストを行うことができ、樹脂含浸粉体造形マスターモデルとしては外表面が平滑で注型型の製作が容易にできるようになるとともに、製作期間の短縮化と製作コストの大幅な低減化を図ることができる粉体造形品を効率的に生産可能な樹脂を含浸した粉体造形品の製造方法を提供することを目的として完成されたものである。 The invention [0006] to solve the conventional problems as described above, sufficient heat resistance and durability superior strength have the same and the final product strength check various functional test can be performed, with the outer surface becomes possible to easily manufacture a smooth casting type as a resin-impregnated powder molding master model, a significant reduction in shortening the manufacturing cost of the fabrication period It has been completed for the purpose of providing a method for producing a powder shaped article the powder shaped articles impregnated efficiently producible resin can be reduced.

【0005】 [0005]

【課題を解決するための手段】上記の課題を解決するためになされた本発明の含浸液体の化学結合により補強された粉体造形品の製造方法は、粉体造形機の容器内に粉体原料を薄い層状に敷設した後、層表面に予め設計したパターンに基づき粉体凝固液をインクジェット方式で塗布して粉体原料を所定パターンに凝固させた粉体凝固層を形成し、この粉体凝固層の表面に前記と同様に粉体原料を薄い層状に敷設後、粉体凝固液をインクジェット方式で塗布して所定パターンに凝固させた第2の粉体凝固層を形成し、以後、同様の工程を繰り返して粉体凝固層を多数積層した立体状の粉体凝固品を形成し、次いで該粉体凝固品を乾燥後、真空下で熱硬化性樹脂を含浸させ、その後、粉体原料の熱変質温度以下に加熱して熱硬化性樹脂を硬化させ Method for producing a reinforced powder shaped article by chemical bonding of the impregnation liquid of the present invention has been made in order to solve the above problems, there is provided a means for solving] a powder into a container of the powder molding machine after laying the raw material to the thin layer, to form a powder solidified layer solidified by applying by an inkjet scheme based powder coagulating liquid to a pre-designed pattern on the layer surface of the powder material in a predetermined pattern, the powder after laying the same manner as described above powder raw materials in a thin layer on the surface of the solidified layer, the powder coagulating liquid was applied by an ink jet method to form a second powder solidified layer solidified into a predetermined pattern, thereafter, similarly step repeated the form multiple stacked three-dimensional shape of the powder solidified product powder solidified layer, followed by drying the powder solidified product is impregnated with a thermosetting resin under vacuum, then the powder material heating of the following thermal denaturation temperature to cure the thermosetting resin ことを特徴とするものである。 It is characterized in.

【0006】 [0006]

【発明の実施の形態】以下に、本発明の好ましい実施の形態を示す。 BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a preferred embodiment of the present invention. 本発明における粉体造形品とは、実験用モデルや木型代替品或いは射出成形用簡易型などであって、以下の手順により成形する。 The powder shaped articles of the present invention, and the like experimental models and wooden alternative or simplified for injection molding, molded by the following procedure. 先ず、上面の開いた受け皿状の成形型内に有機化合物や金属やセラミック等からなる粉体原料を入れ、その表面を水平にならして薄い層状とする。 First, put the powder material made of an organic compound and a metal or ceramic in a saucer-shaped mold having open upper surface, and a thin layer rang the surface horizontally. 次いで、この層表面に接着剤の役目を発揮する粉体凝固液を塗布して粉体凝固層を形成するが、この時、粉体凝固液の塗布は3次元CADシステム等で予め設計したパターンに基づきインクジェット方式で塗布することにより、粉体原料が所定パターンに凝固した状態の粉体凝固層を形成するようにする。 Pattern then forms a powder coagulating liquid was coated powder solidified layer that serves the role of the adhesive to the layer surface, this time, the application of the powder coagulating liquid which was previously designed by a three-dimensional CAD system or the like by applying the inkjet method on the basis of the powder raw material so as to form a powder solidified layer in a state in which solidified to a predetermined pattern.

【0007】次に、この粉体凝固層の表面に、前記と同様にして粉体原料を1mm以下の薄い層状に敷設し、更に、この層表面に粉体凝固液を予め設計したパターンに基づきインクジェット方式で塗布し、所定パターン通りに凝固した第2の粉体凝固層を形成する。 [0007] Next, the surface of the powder solidified layer, wherein a similarly laid a powder raw material in the following thin layer 1 mm, further, on the basis of the pre-designed pattern powder coagulating liquid in this layer surface It was coated by an inkjet method to form a second powder solidified layer solidified into a predetermined pattern as. その後、同様の工程を繰り返すことにより、3次元CADシステム等で予め設計した通りの所定パターンに凝固した粉体凝固層を多数積層成形し、立体状の粉体凝固品とする。 Thereafter, similar by repeating the process, a large number laminate molding a powder solidified layer solidified into a predetermined pattern as previously designed by three-dimensional CAD system or the like, a solid-like powder solidified product.

【0008】次に、得られた粉体凝固品を乾燥した後、 [0008] Next, after drying the obtained powder solidified article,
真空下でこの粉体凝固品の隙間内に熱硬化性樹脂を十分に含浸させる。 It is sufficiently impregnated with a thermosetting resin into the gap of the powder coagulated products under vacuum. その後、粉体原料の熱変形温度以下に加熱して熱硬化性樹脂を硬化させることにより、十分に樹脂が含浸されて耐熱性や耐久性等に優れ、かつ形状変化もなく所定寸法とおりの樹脂を含浸した立体形状の強靱な粉体造形品を得る。 After that, by heating below the heat distortion temperature of the powder material to cure the thermosetting resin, sufficient resin is impregnated excellent heat resistance and durability, and the shape change without predetermined dimension as resin obtaining a tough powder shaped articles impregnated solid shape.

【0009】この場合、前記熱硬化性樹脂の含浸を真空下で行うのは樹脂の含浸を促進するためであり、この真空条件としては、真空度が4torr以下の真空下で行うことが好ましく、真空度が4torrより大きいと十分な樹脂の含浸が的確に行われず、実用的強度に耐え得るだけの十分な耐熱性や耐久性等が得られなくなる。 [0009] In this case, perform impregnation of the thermosetting resin under vacuum is for the purpose of promoting the impregnation of the resin, as the vacuum condition, it is preferable that the vacuum degree carried out under a vacuum of less than 4 torr, the degree of vacuum is not performed accurately impregnation of 4torr larger than enough resin, sufficient heat resistance and durability of only withstand practical strength can not be obtained.

【0010】また、含浸させる熱硬化性樹脂としては、 Further, as the thermosetting resin to be impregnated,
例えば、エポキシ樹脂やフェノール樹脂、不飽和ポリエステル樹脂のような熱硬化性樹脂を主成分とし、これに脂肪族アミンや芳香族アミン、酸無水物、第3級アミンのような硬化剤を加え、更に必要に応じて希釈剤や促進剤を適量加えたものを利用する。 For example, epoxy resins, phenol resins, thermosetting resins such as unsaturated polyester resin as a main component, to which aliphatic amines and aromatic amines, acid anhydride, a curing agent such as a tertiary amine is added, further utilizing plus an appropriate amount of diluent and accelerator as needed.

【0011】また、前記粉体原料として石膏を用い、粉体凝固液として水を主体とする液体を用いることもでき、この場合には、CADの3次元図で設定の寸法とおりの立体状石膏モデルが短時間で簡単に得られることとなり、しかも樹脂が含浸されているために十分な機械的強度があり、嵌合状態試験等を実製品とほぼ同等のレベルで行えることとなる。 Further, using gypsum as the powder raw material, water can also be used a liquid composed mainly of a powder coagulating liquid, in this case, three-dimensional shaped gypsum as the dimensions of the set three-dimensional view of a CAD model becomes possible to be easily obtained in a short time, yet have sufficient mechanical strength to the resin is impregnated, and thus capable of performing a fitting state test or the like at almost the same level as the actual product. 更に、粉体原料として珪砂あるいはアルミナを用い、粉体凝固液として水ガラスを用いて、該粉体凝固液をインクジェット方式で塗布後、炭酸ガス雰囲気中で粉体凝固層を形成するようにすることもできる。 Further, using silica sand or alumina as a powder raw material, as a powder coagulating liquid with water glass, after coating by an ink jet method the powder coagulating liquid, so as to form a powder solidified layer in a carbon dioxide atmosphere it is also possible. この場合は、炭酸ガスの接触により粉体凝固液である水ガラスが即座に固化するため、より短時間で砂中子を成形することが可能となる。 In this case, since the water glass is a powder coagulating liquid by contact with carbon dioxide is solidified immediately, it is possible to mold the sand core in a shorter time.

【0012】 [0012]

【実施例】(実施例1)成形型内に石膏粉体原料を入れ表面を水平にならして薄い層状にした。 EXAMPLES was (Example 1) A thin surface placed gypsum powder raw rang horizontally into the mold layers. 次いで、層表面に予め3次元CADデータに基づいて設計したパターンに基づき水と増粘剤を主体とする粉体凝固液をインクジェット方式で塗布し、粉体原料を所定パターンに凝固させた粉体凝固層を形成した。 Then, the powder coagulating liquid consisting mainly of based water and thickener pattern designed in advance on the basis of three-dimensional CAD data into the layer surface was coated with an ink-jet method, to solidify the powder material in a predetermined pattern powder to form a solidified layer. 更に、この粉体凝固層の表面に前記と同様に粉体原料を薄い層状に敷設後、粉体凝固液をインクジェット方式で塗布して所定パターンに凝固させた第2の粉体凝固層を形成し、以後、同様の工程を繰り返して粉体凝固層を多数積層した立体状の粉体凝固品を形成した。 Further, after laying the same manner as described above powder raw material to the surface of the powder solidified layer in a thin layer, the second powder solidified layer solidified into a predetermined pattern powder coagulating liquid was applied by an ink jet method to form and, thereafter, to form the same steps to many laminating the powder solidified layer by repeating the three-dimensional shape of the powder solidified product. 次いで、この粉体凝固品を乾燥後、真空度が4torr以下の真空下で熱硬化性樹脂を含浸させた。 Then, after drying the powder solidified product, the degree of vacuum impregnated with a thermosetting resin under a vacuum of less than 4 torr. 樹脂含浸液としてはエポキシ樹脂100重量部、硬化剤124重量部、希釈剤20重量部、促進剤2重量部を混合したものを用いた。 100 parts by weight of epoxy resin as a resin impregnation liquid, curing agent 124 parts by weight, was used a mixture of a diluent 20 parts by weight, accelerator 2 parts by weight. その後、造形品の熱変質温度以下である140℃の下で2時間加熱して熱硬化性樹脂を硬化させ、含浸液体の化学結合により補強された粉体造形品を得た。 Then heated for 2 hours under or less shaped articles of a heat deterioration temperature 140 ° C. to cure the thermosetting resin to obtain a powder shaped article reinforced by chemical bonding of the impregnation liquid. 得られた粉体造形品の引張強度および耐熱強度は、実用強度試験を行うのに十分なものであり、 The resulting tensile strength and heat resistance of the powder shaped articles is sufficient to carry out the practical strength test,
従来品のものは脆くて直ぐに崩れてしまい実用試験ができなかったのに比べて、本発明品は本生産に入る前に精度の高い強度試験等を行うことができた。 Those of conventional products compared to could not cause practical tests collapsed immediately brittle, the present invention product was able to perform highly accurate strength tests etc. before entering the production.

【0013】(実施例2)実施例1と同様にして、木型代替品となる含浸液体の化学結合により補強された粉体造形品を成形した。 [0013] In the same manner as Example 2 Example 1 was molded powder shaped article reinforced by chemical bonding of the impregnation liquid comprising a wooden replacement. 得られた造形品は引張強度および耐熱性に優れているため、充分木型代替品としての性能を有するものであった。 Since the obtained shaped article is excellent in tensile strength and heat resistance was achieved sufficiently with the performance of the wooden replacement.

【0014】(実施例3)実施例1と同様にして、射出成形金型となる含浸液体の化学結合により補強された粉体造形品を成形した。 [0014] In the same manner as Example 3 Example 1 was molded reinforced powder shaped article by chemical bonding of the impregnation liquid comprising an injection mold. 得られた造形品は引張強度および耐熱性に優れているため、この金型を使用して実際に数十個のプラスチック製品の射出成形を行うできた。 Since the obtained shaped article is excellent in tensile strength and heat resistance, it could actually perform injection molding of several tens of plastic products using this mold.

【0015】 [0015]

【発明の効果】以上の説明からも明らかなように、本発明は十分な耐熱性や耐久性等の優れた強度を有し最終製品と同様の強度確認や各種の機能テストを行うことができるとともに、製作期間の短縮化と製作コストの大幅な低減化を図ることができる粉体造形品を効率的に生産可能なものである。 As is clear from the above description, the present invention can perform the final products and similar intensity check various functional tests have excellent strength such as sufficient heat resistance and durability together, but efficient possible production of powder shaped article can be made considerably reduce the shortening and production cost of the production period. よって本発明は従来の問題点を一掃した含浸液体の化学結合により補強された粉体造形品の製造方法として、産業の発展に寄与するところは極めて大である。 Accordingly, the present invention is a method for manufacturing a reinforced powder shaped article by chemical bonding of the impregnation liquid was wiped out conventional problems, when contributing to the development of industries is very large.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl. 7識別記号 FI B29C 33/38 B29C 33/38 (58)調査した分野(Int.Cl. 7 ,DB名) B29C 67/00 B29C 69/00 - 69/02 B29C 70/00 - 70/88 B29C 9/10 B28B 1/00 B28B 1/30 B29C 33/38 ────────────────────────────────────────────────── ─── of the front page continued (51) Int.Cl. 7 identification mark FI B29C 33/38 B29C 33/38 (58) investigated the field (Int.Cl. 7, DB name) B29C 67/00 B29C 69/00 - 69/02 B29C 70/00 - 70/88 B29C 9/10 B28B 1/00 ​​B28B 1/30 B29C 33/38

Claims (7)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 粉体造形機の容器内に粉体原料を薄い層状に敷設した後、層表面に予め設計したパターンに基づき粉体凝固液をインクジェット方式で塗布して粉体原料を所定パターンに凝固させた粉体凝固層を形成し、この粉体凝固層の表面に前記と同様に粉体原料を薄い層状に敷設後、粉体凝固液をインクジェット方式で塗布して所定パターンに凝固させた第2の粉体凝固層を形成し、以後、同様の工程を繰り返して粉体凝固層を多数積層した立体状の粉体凝固品を形成し、次いで該粉体凝固品を乾燥後、真空下で熱硬化性樹脂を含浸させ、その後、粉体原料の熱変質温度以下に加熱して熱硬化性樹脂を硬化させることを特徴とする含浸液体の化学結合により補強された粉体造形品の製造方法。 [Claim 1] After laying the powder material into a thin layer in a container of the powder molding machine, a predetermined pattern of the powder material is applied by an ink-jet scheme on the basis of powder coagulating liquid to a pre-designed pattern on the layer surface the powder solidified layer solidified and formed, the said the surface of the powder solidified layer and after laying a thin layer of powder material in the same manner, powder coagulating liquid was applied by an ink jet method is coagulated in a predetermined pattern second to form a powder solidified layer, thereafter, the same process repeating to form a powder solidified layer the many layered three-dimensional shape of the powder solidified articles and then dried the powder coagulated product was vacuum is impregnated with a thermosetting resin under, then the powder raw material of the heat deterioration temperature below heated to be reinforced by chemical bonding of the impregnation liquid, characterized in that curing the thermosetting resin is powder shaped article Production method.
  2. 【請求項2】 粉体原料として石膏を用い、粉体凝固液として水を主体とする液体を用いる請求項1に記載の含浸液体の化学結合により補強された粉体造形品の製造方法。 2. Using the gypsum as a powder raw material, chemical bonds by the reinforcing process for the preparation of the powder shaped articles impregnated liquid according to claim 1 using a liquid mainly composed of water as a powder coagulating liquid.
  3. 【請求項3】 粉体造形品が実験用モデルである請求項1または2に記載の含浸液体の化学結合により補強された粉体造形品の製造方法。 3. The method for producing a reinforced powder shaped article by chemical bonding of the impregnation liquid according to claim 1 or 2 powder shaped article is an experimental model.
  4. 【請求項4】 粉体造形品が木型代替品である請求項1 4. The method of claim 1 powder shaped article is wooden alternative
    または2に記載の含浸液体の化学結合により補強された粉体造形品の製造方法。 Or 2 process for the preparation of a powder shaped article reinforced by chemical bonding of the impregnation liquid described.
  5. 【請求項5】 粉体造形品が射出成形用簡易型、ブロー成形用簡易型、板金プレス用簡易型のいずれかである請求項1または2に記載の含浸液体の化学結合により補強された粉体造形品の製造方法。 5. A powder shaped article is simplified for injection molding, simple for blow molds, flour reinforced by chemical bonding of the impregnation liquid according to claim 1 or 2 is either simplified for sheet metal method of manufacturing a body shaped articles.
  6. 【請求項6】 粉体原料として珪砂あるいはアルミナを用い、粉体凝固液として水ガラスを用いて、炭酸ガスにより粉体凝固層を形成するようにした請求項1に記載の含浸液体の化学結合により補強された粉体造形品の製造方法。 6. Using silica sand or alumina as a powder raw material, as a powder coagulating liquid with water glass, chemical bonding of the impregnation liquid of claim 1 which is adapted to form a powder solidified layer by carbon dioxide reinforced production method of the powder shaped article by.
  7. 【請求項7】 粉体造形品が鋳型用砂中子である請求項6に記載の含浸液体の化学結合により補強された粉体造形品の製造方法。 7. A method for producing a reinforced powder shaped article by chemical bonding of the impregnation liquid of claim 6 powder shaped article is foundry sand core.
JP34849199A 1999-12-08 1999-12-08 Method for producing a reinforced powder shaped article by chemical bonding of the impregnation liquid Expired - Fee Related JP3212581B2 (en)

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US7087109B2 (en) 2002-09-25 2006-08-08 Z Corporation Three dimensional printing material system and method
KR101407801B1 (en) 2006-12-08 2014-06-20 3디 시스템즈 인코오퍼레이티드 Three dimensional printing material system and method using peroxide cure
JP5129267B2 (en) * 2007-01-10 2013-01-30 スリーディー システムズ インコーポレーテッド 3D printing material systems with improved color, article performance and ease of use, the
US7968626B2 (en) 2007-02-22 2011-06-28 Z Corporation Three dimensional printing material system and method using plasticizer-assisted sintering
US8568649B1 (en) 2007-03-20 2013-10-29 Bowling Green State University Three-dimensional printer, ceramic article and method of manufacture
JP2011068125A (en) * 2009-08-27 2011-04-07 Gun Ei Chem Ind Co Ltd Heat-resistant molding and method for producing the same
US10174422B2 (en) 2012-10-25 2019-01-08 Applied Materials, Inc. Apparatus for selective gas injection and extraction
KR20160088324A (en) * 2013-11-06 2016-07-25 럿거스, 더 스테이트 유니버시티 오브 뉴저지 Production of monolithic bodies from a porous matrix using low temperature solidification in an additive manufacturing process
JP5913270B2 (en) * 2013-12-04 2016-04-27 株式会社ブリヂストン Tire vulcanizing mold manufacturing method of the
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