A Device for Biaxially-Oriented Stretching Polytetrafluoroethylene Hollow Fiber Membranes and Method Thereof
    8.
    发明申请
    A Device for Biaxially-Oriented Stretching Polytetrafluoroethylene Hollow Fiber Membranes and Method Thereof 审中-公开
    一种用于双轴拉伸聚四氟乙烯中空纤维膜的装置及其方法

    公开(公告)号:US20160257049A1

    公开(公告)日:2016-09-08

    申请号:US14785526

    申请日:2014-09-01

    Abstract: The present disclosure discloses a device for biaxially-oriented stretching polytetrafluoroethylene hollow fiber membranes and the method thereof. The device may include a lubricant removing oven and a tube blank heating oven mounted at the outlet end of the push-compression mould, a core extension extending from the core into the lubricant removing oven and the tube blank heating oven, and a speed regulating guide wheel mounted at the outlet of the tube blank heating oven. A tube blank is extruded from a push-compression machine, inserted on the core extension for removal of lubricant in the lubricant removing oven, heated in the tube blank heating oven, transversely stretched by means of the bulked core, and then wound onto the speed regulating guide wheel for longitudinal stretching. Both transverse and longitudinal stretching can be realized for polytetrafluoroethylene tube blanks, overcoming disadvantages of traditional processing devices that can merely perform longitudinal stretching.

    Abstract translation: 本公开公开了一种用于双轴取向拉伸聚四氟乙烯中空纤维膜的装置及其方法。 该装置可以包括安装在推压模具的出口端处的润滑剂除去炉和管坯加热炉,从芯部延伸到润滑剂除去炉和管坯加热炉中的芯延伸部,以及调速导向件 车轮安装在管坯加热炉的出口处。 将管坯从推压机挤出,插入芯延伸部上以除去润滑剂除去炉中的润滑剂,在管坯加热炉中加热,通过膨化芯横向拉伸,然后卷绕到速度 调节导轮用于纵向拉伸。 可以实现聚四氟乙烯管坯的横向和纵向拉伸,克服了只能执行纵向拉伸的传统加工装置的缺点。

    METHOD OF 3D PRINTING
    9.
    发明申请
    METHOD OF 3D PRINTING 审中-公开
    3D打印方法

    公开(公告)号:US20160059481A1

    公开(公告)日:2016-03-03

    申请号:US14601263

    申请日:2015-01-21

    Abstract: Provided is a method of 3D printing with the use of a heater-free, hand-held 3D printing device such as a 3D printing pen. The method consists of adjusting the extrusion feed rate of the substance through the orifice with the use of a substance feed mechanism to provide curing conditions at which the extruded substance maintains a shape-sustaining state; extruding the substance; and curing the extruded substance to the shape-sustaining state by irradiating the extruded substance outside the device with light-radiation elements such as LEDs. The feed rate of the extrusion is carried out once, experimentally, before multiple practical use of the heater-free 3D printing device. The extrudable substance is a photopolymerizable polymer composition that has kinematic viscosity in the range of 7.00 to 10.00 MM2/C when measured at room temperature by the capillarity method.

    Abstract translation: 提供了一种使用无加热器的手持3D打印设备(例如3D打印笔)进行3D打印的方法。 该方法包括通过使用物质进料机构调节物质通过孔口的挤出进料速率,以提供固化条件,挤出物质保持其形状维持状态; 挤出物质; 并通过用诸如LED的光辐射元件照射装置外的挤出物质将挤出的物质固化至形状维持状态。 在实际使用无加热器的3D打印装置之前,挤出的进给速度经过一次实验。 可挤出物质是可光聚合的聚合物组合物,其在室温下通过毛细管法测量时的运动粘度在7.00至10.00MM 2 / C的范围内。

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