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    • 70. 发明授权
    • Manufacture of polymeric foam
    • 聚合物泡沫的制造
    • US5393361A
    • 1995-02-28
    • US834532
    • 1992-02-11
    • Gerd BareuterCarlos FernandezJack Tetlow
    • Gerd BareuterCarlos FernandezJack Tetlow
    • B29C20060101B29C44/28B29C44/46B29C67/20B29C67/22B32B31/14
    • B29C44/467B29C44/321Y10T156/1142
    • In the production of slabstock polymeric foam, foam reactants are delivered to a vessel (1), the reacting foam mixture passes over an overflow outlet (2) from the vessel and along a downwardly inclined fall plate (3) to a conveyor (4), two separate covering layers, namely a lower flaccid plastics film (26) and an upper relatively stiff paper foil (28), are applied over the reacting foam mixture near the overflow outlet (36), a blanket (40) weighted by free floating plates (46) is positioned over the cover layers in the foam expansion zone to press down lightly on the foam. The separate plastics film and paper foil are provided by delaminating a composite sheet (21), and are delivered to the foam surface in substantially tension-free condition by a take-off mechanism (22) which draws the composite sheet from a supply roll. Improved economy is achieved as a result of improved characteristics at the top of the foam block produced.
    • PCT No.PCT / EP91 / 01166 Sec。 371日期:1992年2月11日 102(e)1992年2月11日PCT PCT 1991年6月21日PCT公布。 出版物WO92 / 00184 日本1992年1月9日。在块状聚合物泡沫的生产中,泡沫反应物被输送到容器(1),反应泡沫混合物从容器中经过溢流出口(2)并沿着向下倾斜的落下的板(3 )到输送机(4)上,在溢流出口(36)附近的反应泡沫混合物上施加两个单独的覆盖层,即下部松弛的塑料薄膜(26)和上部较硬的纸箔(28) (40)通过自由浮板(46)加权,位于泡沫膨胀区中的覆盖层上方,以轻轻地压在泡沫上。 单独的塑料膜和纸箔通过分层复合片材(21)提供,并且通过从供给辊拉出复合片材的取出机构(22)以基本上无张力的状态被输送到泡沫表面。 由于生产的泡沫块顶部的特性改善,经济性得到改善。