公开(公告)号：US5630968A

公开(公告)日：1997-05-20

申请号：US474724

申请日：1995-06-07

申请人： Ning-He Wang ,  Noriaki Hashimoto

发明人： Ning-He Wang ,  Noriaki Hashimoto

IPC分类号： B29C47/76 ,  B29C47/80 ,  B29C44/00

CPC分类号： B29C47/762 ,  B29C47/805 ,  B29C47/0009 ,  Y10S425/812

摘要： A water-injection foaming devolatilizing method includes the steps of: melting and kneading a polymer in a water-injection dispersing zone of an extruder having a screw; injecting water into a polymer melt so as to be dispersed into the polymer melt which is being kneaded; and vaporizing volatile components contained in the polymer melt together with water in a devolatilizing zone having a vent port and located on a downstream side of the water-injection dispersing zone, so that the volatile components are removed and discharged through the vent port. A pressure-reducing expansion zone is provided between the water-injection dispersing zone and the devolatilizing zone so as to be upstream of the vent port. The method further includes gradually reducing a pressure in the pressure-reducing expansion zone so that not only bubbles in the water which is dispersed into the polymer melt are made to grow up, but also the bubbles are broken down at a downstream end portion of the pressure-reducing expansion zone.

摘要翻译： 注水发泡脱挥发分法包括以下步骤：在具有螺杆的挤出机的注水分散区中熔融和捏合聚合物; 将水注入聚合物熔体中以分散在正在捏合的聚合物熔体中; 并且包含在聚合物中的挥发性成分的蒸发与具有通气口并位于注水分散区的下游侧的脱挥发区一起与水一起熔化，从而通过排气口除去挥发性成分并排出。 在注水分散区和脱挥发区之间设有减压膨胀区，以便在通气口的上游。 该方法还包括逐渐降低减压膨胀区的压力，使得不仅使分散在聚合物熔体中的水中的气泡长大，而且气泡在下游端部分分解 减压膨胀区。

公开(公告)号：US6007749A

公开(公告)日：1999-12-28

申请号：US35148

申请日：1998-03-05

申请人： Ning-He Wang ,  Norimasa Oda ,  Seiji Takamoto ,  Yoshitaka Kimura ,  Hideki Mizuguchi

发明人： Ning-He Wang ,  Norimasa Oda ,  Seiji Takamoto ,  Yoshitaka Kimura ,  Hideki Mizuguchi

IPC分类号： B29B7/84 ,  B29C47/10 ,  B29C47/40 ,  B29C47/76 ,  C04B33/32 ,  C08F6/00

CPC分类号： B29C47/762 ,  B29C47/1063 ,  B29C47/0009 ,  B29K2105/0005 ,  Y10S425/812

摘要： A water injection foaming devolatilizing method, and an apparatus for practicing the method according to the invention are designed as follows: A molten polymer material is kneaded in a water-injection dispersion zone (11) of an extruding machine having a pair of screws (6) each of which is turned in the same direction. Water is supplied to the molten polymer material, thus the water being dispersed therein while the molten polymer material is kneaded. In a devolatilizing zone (12) downstream of the water-injection dispersion zone, the volatile components in the molten polymer material are removed by being gasified together with the water. In this water injection foaming devolatilizing method, the molten polymer material is smoothly extruded from the filling zone (10) to the water-injection dispersion zone (11), and in the latter zone (11) water injection is performed with increased pressure due to the aid of a ring (15), thereby to achieve the devolatilizing of the molten polymer material.

摘要翻译： 注射发泡脱挥发分方法和实施本发明方法的装置设计如下：将熔融聚合物材料在具有一对螺钉（6）的挤出机的注水分散区（11）中捏合 ），每个都沿相同的方向转动。 向熔融聚合物材料供给水，因此在熔融聚合物材料被捏合的同时将水分散在其中。 在注水分散区下游的脱挥发区（12）中，通过与水一起气化，除去熔融聚合物材料中的挥发性成分。 在这种注水发泡脱挥发分法中，熔融聚合物材料从填充区（10）平滑地挤出到注水分散区（11），在后一区（11）中，由于 环（15）的帮助，从而实现熔融聚合物材料的脱挥发分。