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    • 28. 发明授权
    • Sheet forming die and sheet forming method
    • 成型模板和片材成型方法
    • US08801417B2
    • 2014-08-12
    • US12423832
    • 2009-04-15
    • Kenji NozawaMasatsugu Tamura
    • Kenji NozawaMasatsugu Tamura
    • B29C47/06B29C47/86
    • B29C47/92B29C47/0021B29C47/062B29C47/0816B29C47/14B29C47/145B29C47/56B29C47/705B29C47/862B29C47/8845B29C2947/926B29C2947/92695B29C2947/92704B29C2947/92904B29K2105/256
    • Provided is a sheet forming die capable of finely controlling the flow rates of the respective divided flows of a molten resin with precision. The sheet forming die is a sheet forming die 3 configured to: receive a first molten resin B; to receive a second molten resin A; and to thus form a sheet-shaped resin-made product by discharging the molten resins A, B from a lip gap 15. The sheet forming die 3 includes: a first passage 17 provided to flow the supplied first molten resin B up to an upstream end of a lip part 23 located upstream of the lip gap 15; a second passage 19 provided to flow the supplied second molten resin A up to the lip part 23, the second passage branching out into a plurality of passageways 19A, 19B in a midstream portion thereof, downstream ends of these passageways 19A, 19B being connected to portions in an upstream end of the lip part 23, respectively; and temperature controller 21 configured to locally control a temperature of a midstream portion of at least one of the passageways 19A, 19B in order to control a flow rate of the second molten resin A in the passageways 19A, 19B.
    • 提供一种能够精确地精细地控制熔融树脂的各个分流的流量的片状成形模具。 成型模具是成形模具3,其被构造成:容纳第一熔融树脂B; 以接收第二熔融树脂A; 从而通过从唇部间隙15排出熔融树脂A,B而形成片状树脂制品。成形模具3包括:第一通道17,设置成将供给的第一熔融树脂B流动到上游 位于唇缘间隙15上游的唇部23的端部; 第二通道19设置成使供应的第二熔融树脂A流到唇部23,第二通道在其中游部分分支成多个通道19A,19B,这些通道19A,19B的下游端连接到 分别在唇部23的上游端部分; 以及温度控制器21,被配置为局部地控制通道19A,19B中的至少一个的中游部分的温度,以便控制通道19A,19B中的第二熔融树脂A的流量。