Apparatus having a vacuum chamber for producing moldings
    3.
    发明授权
    Apparatus having a vacuum chamber for producing moldings 失效
    具有用于制造模制品的真空室的装置

    公开(公告)号:US5540576A

    公开(公告)日:1996-07-30

    申请号:US202189

    申请日:1994-02-24

    摘要: An apparatus having a vacuum chamber or chamber, wherein the changing manner of the mold can be improved, the sealing structure of the vacuum chamber or an injection nozzle is simple, and the cost of the apparatus is reduced and preservation of the apparatus is improved. The apparatus has a vacuum chamber for surrounding a mold into an airtight situation. The vacuum chamber includes an upper casing and a lower casing, and they are being divided by a parting line defined by mating peripheral edge surfaces which incline upwardly from an operator-side to an opposite-side. An O-ring as a sealing member of the vacuum chamber is positioned between the peripheral edge surfaces.

    摘要翻译: 一种具有真空室或室的装置,其中可改善模具的改变方式,真空室或注射喷嘴的密封结构简单,并且降低了装置的成本并改善了设备的保存。 该装置具有用于将模具环绕到气密状态的真空室。 真空室包括上壳体和下壳体,并且它们被由从操作者侧向相对侧向上倾斜的配合的外围边缘表面限定的分型线分开。 作为真空室的密封构件的O形环位于周边边缘表面之间。

    Process for molding an integral skin foam and a polyurethane material
for molding the same
    5.
    发明授权
    Process for molding an integral skin foam and a polyurethane material for molding the same 失效
    用于模塑整体皮肤泡沫和用于模塑整体皮肤泡沫的聚氨酯材料的方法

    公开(公告)号:US5633289A

    公开(公告)日:1997-05-27

    申请号:US213014

    申请日:1994-03-14

    IPC分类号: C08J9/14 C08J9/34

    摘要: A process and a polyurethane material for molding a semi-rigid integral skin foam which comprising an integral skin having a low degree of foaming and a core having a high degree of foaming. The process includes evacuating a mold cavity to reduce the pressure thereof below atmospheric pressure; injecting into the evacuated mold cavity a polyurethane material; and foaming the material to fill the cavity. The polyurethane material contains a polyol component and an isocyanate component with, at most, 5 parts by weight of a solvent for 100 parts by weight of the polyol component, in the absence of freon.

    摘要翻译: 一种用于模制半刚性整体皮肤泡沫的方法和聚氨酯材料,其包含具有低发泡度的整体皮肤和具有高发泡度的芯。 该方法包括排空模腔以将其压力降低到大气压以下; 将真空模腔注入聚氨酯材料; 并使材料起泡以填充空腔。 在不存在氟利昂的情况下,聚氨酯材料含有多元醇组分和异氰酸酯组分,其中至多为5重量份的100重量份多元醇组分的溶剂。