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    • 3. 发明授权
    • Method for manufacturing an automotive trim product
    • 汽车修边产品的制造方法
    • US5837172A
    • 1998-11-17
    • US892740
    • 1997-07-15
    • James R. PritchardLawrence R. Nichols
    • James R. PritchardLawrence R. Nichols
    • B29C44/08B29C44/12B60R13/02B29C44/06
    • B29C44/086B29C44/12B60R13/02
    • An interior trim component, such as a door panel, having an outer skin backed by a low density molded mat foam substrate and an energy absorbing foam backing is manufactured in a single mold tool in a multiple stage foaming operation in which the outer skin and a glass reinforcement mat are positioned in the mold cavity and a mold insert corresponding to the energy absorbing foam layer is mounted to the lid of the mold tool. A polyurethane precursor mixture is poured into the open mold and the lid closed to generate the low density molded mat substrate. The mold is opened and the mold insert removed and a second urethane precursor mixture is poured onto the substrate and the mold closed to generate the energy absorbing foam backing within the space of the mold cavity previously occupied by the mold insert.
    • 在多层发泡操作中,在单层模具中制造具有由低密度模制垫泡沫衬底支撑的外表皮和能量吸收泡沫背衬的内饰件,例如门板,其中外皮和 玻璃加强垫定位在模腔中,并且与能量吸收泡沫层相对应的模具插件安装到模具的盖上。 将聚氨酯前体混合物倒入开模中,盖关闭以产生低密度成型垫基材。 打开模具并移除模具插件,将第二聚氨酯前体混合物倒入基材上,并关闭模具以在模具插入件预先占据的模腔空间内产生能量吸收泡沫背衬。
    • 6. 发明授权
    • Solvent flush reaction injection molding mixhead
    • 溶剂冲洗反应注塑混合头
    • US5562883A
    • 1996-10-08
    • US436002
    • 1995-05-05
    • Wayne C. SalisburyJames R. PritchardWilliam M. HumphreyMichael J. Provencher
    • Wayne C. SalisburyJames R. PritchardWilliam M. HumphreyMichael J. Provencher
    • B29C45/24B01F15/00B01F5/02B01F5/04
    • B01F15/00025
    • A solvent flush reaction injection molding mixhead has a mixing chamber with a solvent inlet port in one end and a chemical outlet port in an opposite end. A pair of hydraulically operated chemical injectors are connected to the mixing chamber between the solvent inlet port and chemical outlet port to inject liquid reaction molding chemicals at high pressure through injector ports into the mixing chamber. The mixed chemicals are delivered through the chemical outlet port to a spray wand on the mixhead for application to a mold surface or an object requiring a foam coating. A flush valve is associated with the solvent inlet port and is moveable from a closed position to block the solvent inlet port while the chemicals are injected into the mixing chamber, and an open position where liquid solvent under a high pressure is supplied through turbulator ports into the mixing chamber to clean and flush any remaining mixed chemicals from the flush valve, the mixing chamber including the chemical injector ports, and the spray wand.
    • 溶剂冲洗反应注射成型混合头具有混合室,其一端具有溶剂入口和相对端的化学品出口。 一对液压操作的化学注射器连接到溶剂入口和化学品出口之间的混合室,以将液体反应成型的化学物质通过喷射器端口高压注入混合室。 混合的化学品通过化学品出口端口输送到混合头上的喷雾棒,用于模具表面或需要泡沫涂层的物体。 冲洗阀与溶剂入口相关联并且可以在封闭位置移动以阻止溶剂入口,同时将化学物质注入混合室,并且将高压液体溶剂通过湍流器端口供应的打开位置变为 混合室清洗冲洗冲洗阀中剩余的混合化学物质,混合室包括化学注入口和喷雾棒。