Method of moulding foamed synthetic resin pellets of polyolefine
    2.
    发明授权
    Method of moulding foamed synthetic resin pellets of polyolefine 失效
    聚烯烃发泡合成树脂颗粒的成型方法

    公开(公告)号:US3953558A

    公开(公告)日:1976-04-27

    申请号:US425870

    申请日:1973-12-18

    摘要: A method of moulding foamed synthetic resin pellets of polyolefine in a mould, wherein the synthetic resin pellets are prepared with volumne of closed cells being more than 65 % of the total volume of the total cells and having an inorganic gas in the cells at a pressure higher than 1.18 atmospheres, then filled in a mould which is not completely gas tight, and then heated to expand and tightly adhere to each other. The pressure in the mould can be lower than ordinary pressure or at a vacuum and the pressure of the resin can be at a pressure higher than ordinary pressure. The moulded product may be removed from the mould after cooling or during cooling when the inner temperature of the product is between its melting point and a temperature 50.degree.C below the melting point. The obtained product may be stored at a temperature of 30.degree. to 70.degree.C below the melting point.

    摘要翻译: 一种在模具中模制聚烯烃的发泡合成树脂颗粒的方法,其中合成树脂颗粒是以闭孔体积大于总细胞总体积的65%而制备的,并且在压力下在细胞中具有无机气体 高于1.18大气压,然后填充在不完全气密的模具中,然后加热膨胀并彼此紧密粘合。 模具中的压力可以低于常压或真空,并且树脂的压力可以处于高于常压的压力。 当产品的内部温度在其熔点和低于熔点50℃的温度之间时,模制产品可以在冷却之后或在冷却期间从模具中除去。 所得产物可以在低于熔点的30℃至70℃的温度下储存。