Mold for injection molding of thermoplastic resin
    1.
    发明授权
    Mold for injection molding of thermoplastic resin 失效
    热塑性树脂注塑用模具

    公开(公告)号:US5468141A

    公开(公告)日:1995-11-21

    申请号:US182494

    申请日:1994-01-18

    摘要: A mold for injection molding of a thermoplastic resin. The mold comprises a cavity block, a core block, and a cavity formed between the cavity block and the core block and adapted to be filled with a molten resin. The cavity block includes an insulating layer on a cavity side thereof, the insulating layer being made of a material selected from the group consisting of ceramic materials, porcelain enamel, glass materials, heat resistant plastic materials and their composites. The core block includes a release insulating layer on a cavity side thereof, the release insulating layer being made of a material selected from the group consisting of fluorocarbon resins, fluorocarbon resin composite materials, silicone resin composite materials and metal platings with fluorocarbon resin dispersion, the release insulating layer further being adapted to effect both mold releasing and heat insulation.

    摘要翻译: 一种用于注塑热塑性树脂的模具。 模具包括空腔块,芯块和形成在空腔块和芯块之间并适于填充熔融树脂的空腔。 空腔块在其空腔侧上包括绝缘层,绝缘层由选自陶瓷材料,瓷搪瓷,玻璃材料,耐热塑料材料及其复合材料的材料制成。 芯块包括在其空腔侧的释放绝缘层,释放绝缘层由选自氟碳树脂,氟碳树脂复合材料,硅树脂复合材料和具有氟碳树脂分散体的金属电镀组成的组中的材料制成, 释放绝缘层还适于实现脱模和隔热。

    Instrument for quantitative analysis
    3.
    发明授权
    Instrument for quantitative analysis 失效
    定量分析仪器

    公开(公告)号:US5223218A

    公开(公告)日:1993-06-29

    申请号:US179645

    申请日:1988-04-08

    IPC分类号: G01N21/03 G01N21/76

    摘要: An instrument for quantitative analysis includes two shutters, one of which prevents light from being introduced into a black box housing a cell holder from the outside through a port in which a cell may be placed in and taken out the black box, and the other of which prevents light from impinging on a photomultiplier tube which is in communication with the black box. The shutters are controlled by a control unit so that one of the shutters opens when the other closes. The instrument also includes detectors which detect whether or not the cell holder and the cell are disposed at predetermined positions, respectively. The detectors output signals to the control unit. The control unit controls an automatic pipetting device to restrict a sample from being introduced into the cell when both the cell holder and the cell are not disposed at the predetermined position.