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    • 6. 发明授权
    • Moulding methods
    • 成型方法
    • US07105120B2
    • 2006-09-12
    • US10344967
    • 2001-08-20
    • Lee Martin SkinnerGraham Frank TowersAjay Talwar
    • Lee Martin SkinnerGraham Frank TowersAjay Talwar
    • B29C39/10B29C70/02
    • B29C70/48B29C70/025
    • A method of molding a high density composite article which, when completed, has opposed outer skins of fiber-reinforced plastics material and polymer mortar core between the skins. The method is performed by (a) providing an openable mold defining a mold cavity and an injection port through which polymer mortar may be introduced into the cavity; (b) opening the mold and placing within the cavity respective layers of fiber reinforcement to form the opposed outer skins; (c) closing the mold and injecting polymer mortar consisting of a resinous material loaded with high density particulate aggregate through the injection port into the cavity, between the layers of fiber reinforcement placed therein; and (d) applying sufficient pressure to the injected polymer mortar to ensure resin is separated from the polymer mortar and penetrates the said layers. The mesh size of the layers of fibrous reinforcing material is on average less than the average size of the high density particulate aggregate whereby the reinforcing material filters aggregate from the resin penetrating said layers, so that the aggregate stays within the polymer mortar core and high fiber/resin ratios are achieved in the skins.
    • 一种成型高密度复合制品的方法,其在完成时具有相对于外皮之间的纤维增强塑料材料和聚合物砂浆芯的外表面。 该方法通过(a)提供限定模腔和可注入口的可开模模具来进行,聚合物砂浆可通过该注入口引入空腔中; (b)打开模具并将纤维增强件的各层放置在腔内以形成相对的外表皮; (c)关闭模具并将由装载有高密度颗粒聚集体的树脂材料组成的聚合物砂浆通过注入口注入到其中放置的纤维增强层之间的空腔中; 和(d)向注射的聚合物砂浆施加足够的压力以确保树脂与聚合物砂浆分离并渗透所述层。 纤维增强材料层的网格尺寸平均小于高密度颗粒聚集体的平均尺寸,由此增强材料过滤器从穿透所述层的树脂聚集,使得聚集体停留在聚合物砂浆芯和高纤维中 /树脂比率在皮肤中实现。