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JPH0952282A Expired / Lapsed JP ⏱️ 0.0 years remaining

Vacuum forming mold and vacuum forming method using the same

Assignee: YOSHIDA KAGAKU KK
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Filing: 1995-08-10
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Granted: —
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Expires: 2015-08-10
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Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 アンダーカットを有する樹脂成形品を、割型 なしに、成形する真空成形用型を提供する。 【解決手段】 この成形用型を用いた真空成形方法は、 熱可塑性樹脂シート1を加熱するシート加熱工程と、通 気性芯材3とシリコンゴム2とを嵌合し、アンダーカッ ト成形用型部2bを形成する型形成工程と、上記型形成 工程で形成した成形用型8の上面に熱可塑性樹脂シート 1を覆い、この熱可塑性樹脂シート1と成形用型8との 間の空間を気密にする気密工程と、熱可塑性樹脂シート 1と成形用型8との間の空間中の空気を外部に吸引し、 この吸引と同時に熱可塑性シート1の成形用型8への密 着によりアンダーカット部を形成する脱気工程と、脱気 終了後、通気性芯材3とシリコンゴム2とを離間する一 次脱型工程と、アンダーカット部を形成してでき上がっ た樹脂成形品からシリコンゴム2を抜き取る二次脱型工 程とを含む。 (57) Abstract: [PROBLEMS] To provide a vacuum forming mold for molding a resin molded product having an undercut without a split mold. A vacuum forming method using this forming die is The sheet heating step of heating the thermoplastic resin sheet 1, the mold forming step of fitting the breathable core material 3 and the silicone rubber 2 to form the undercut molding mold portion 2b, and the mold forming step described above. An airtight process of covering the thermoplastic resin sheet 1 on the upper surface of the molding die 8 to hermetically seal the space between the thermoplastic resin sheet 1 and the molding die 8, and the thermoplastic resin sheet 1 and the molding die 8. The air in the space between is sucked outside, Simultaneously with this suction, a deaeration step of forming an undercut portion by adhering the thermoplastic sheet 1 to the molding die 8, and a primary demolding step of separating the breathable core material 3 and the silicone rubber 2 after deaeration. And a secondary demolding step of removing the silicone rubber 2 from the resin molded product formed by forming the undercut portion.

Inventors

  • 👤 Takahiko Yoshida
  • 👤 貴彦 吉田
  • 👤 Masanori Noguchi
  • 👤 正範 野口

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-02 14:32
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/30; B29C51/34

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