首页> 外国专利> Press tool for progressive laminate consolidation in evacuated mould - to avoid surface air entrapment or compression of laminate cores

Press tool for progressive laminate consolidation in evacuated mould - to avoid surface air entrapment or compression of laminate cores

机译:压制工具,用于在真空模具中逐步压实层压板-避免表面空气滞留或压制层压板芯

摘要

A press tool for consolidating laminates covered on the upper face with a wet coating is provided with a flexible cover which can be progressively deployed laterally from initial contact along the centre of the cavity, while a suction manifold simultaneously evacuates the mould from the borders of the cavity. Opt. a rubber sheet or inflatable sleeve is interposed between the overhead panel and the laminate. Coating is of thermoplastic or thermosetting material. The flexible cover is suspended from arrays of pistons which are progressively actuated in pairs ranked symmetrically with respect to the mould centre-line. The combination of progressive cover contact and evacuation results in even cover contact without air entrapment and consequent surface blemishes. Progressive parting of the cover from the laminate face from the borders inwards avoids overstressing of the laminate, requires less force than parting a rigid plane platen from all parts of the laminate surface simultaneously.
机译:用来压实覆盖有湿涂层的上层板的压制工具配备有一个柔性盖,该盖可以从初始接触开始沿模腔的中心横向展开,同时一个吸气歧管同时将模具从模具的边缘抽空。腔。选择。在顶板和层压板之间插入一块橡胶板或充气套。涂层是热塑性或热固性材料。柔性盖悬挂在成排的活塞阵列上,这些成对的活塞相对于模具中心线成对排列。渐进式覆盖物接触与排空相结合,可实现均匀的覆盖物接触,而不会夹带空气,也不会产生表面瑕疵。从边缘向内从层压件表面逐渐分开覆盖物避免了层压件的过大应力,与同时从层压件表面的所有部分分开刚性平面压板相比,所需的力较小。

著录项

  • 公开/公告号FR2385528B1

    专利类型

  • 公开/公告日1980-02-08

    原文格式PDF

  • 申请/专利权人 POLYFONT;

    申请/专利号FR19770010341

  • 发明设计人

    申请日1977-03-31

  • 分类号B32B31/20;B32B27/00;

  • 国家 FR

  • 入库时间 2022-08-22 17:24:03

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