公开(公告)号：US06093462A

公开(公告)日：2000-07-25

申请号：US943716

申请日：1997-10-03

申请人： Michael R. O'Herron ,  George R. Wright

发明人： Michael R. O'Herron ,  George R. Wright

IPC分类号： B29C47/06 ,  B29C47/88 ,  B32B27/08 ,  B29D22/00

CPC分类号： B29C47/065 ,  B29C47/0021 ,  B29C47/145 ,  B29C47/8845 ,  B29C47/8855 ,  B29C47/8875 ,  B32B27/08 ,  Y10T428/1334 ,  Y10T428/1341 ,  Y10T428/1379 ,  Y10T428/1383 ,  Y10T428/31533 ,  Y10T428/31728 ,  Y10T428/31786 ,  Y10T428/31855 ,  Y10T428/31909 ,  Y10T428/31928

摘要： Inherently low orientation sheet is produced by extruding a thermoplastic material in its melt phase onto the surface of a chill roller and thereafter solidifying the sheet at a relatively slow chill rate. Importantly, the just extruded thermoplastic polymeric sheet (i.e., the melt) is urged into continuous surface-to-surface contact with the chill roll by a curtain of air impinging upon the sheet at a velocity sufficient to ensure such continuous surface-to-surface contact between the sheet and the chill roll, but insufficient to impart substantial stress to the sheet. In such a manner, therefore, the resulting sheet will exhibit a low inherent internal stress level as evidenced by an unusually low shrink rate (ASTM D-1204) of less than about 18%. The sheets of the present invention are thus especially characterized by such unusually low shrink rates, and hence unusually low inherent internal stress levels which find particular utility as containers for the packaging industry--especially containers produced by melt-phase deep-draw thermoforming techniques.

摘要翻译： 通过将其熔融相中的热塑性材料挤出到冷却辊的表面上，然后以相对较慢的冷却速率固化片材，从而产生固有的低取向片材。 重要的是，刚刚挤出的热塑性聚合物片材（即，熔体）通过以足以确保这种连续的表面到表面的速度通过撞击在片材上的空气的窗帘而被迫与冷却辊连续的表面 - 表面接触 片材和冷却辊之间的接触，但不足以对片材施加显着的应力。 因此，以这种方式，所得到的片材将表现出低固有的内应力水平，这是由于异常低的收缩率（ASTM D-1204）小于约18％所证明的。 因此，本发明的片材特别地特征在于这种异常低的收缩率，因此特别是低的固有内部应力水平，其特别用作包装工业的容器，特别是通过熔融相深拉伸热成型技术生产的容器。

公开(公告)号：US06038915A

公开(公告)日：2000-03-21

申请号：US901431

申请日：1997-07-25

申请人： Michael R. O'Herron ,  John A. Loebach ,  Greg A. Whitehead

发明人： Michael R. O'Herron ,  John A. Loebach ,  Greg A. Whitehead

IPC分类号： G01M3/32 ,  G01M3/34

CPC分类号： G01M3/3209 ,  G01M3/3218 ,  G01M3/3236

摘要： Apparatus and methods whereby flexible walled containers may be automatically pressure tested at a pressure testing station for the purpose of determining the presence of defective containers. Detected defective containers may thereafter be transported to an ejector station and ejected physically from their respective supporting tray. The pressure testing station is provided with an array of pressure testing heads which are moveable reciprocally towards and away from the containers while supported in their tray. Each of the pressure testing heads thus makes sealing contact with the rim of an individual respective one of the containers supported in the tray. The ejector station is provided with an array of ejector assemblies equal in number to the number of containers supported on a tray and oriented at an angle relative to a vertical cross-machine plane. If a container is determined to be defective (i.e., will not achieve and/or maintain a predetermined pressure condition when a pressurizing fluid, such as pressurized air, is introduced into the container at the pressure testing station), a controller will issue a signal corresponding to that one of the ejector assemblies which is in registry with the detected defective container. Selective activation of that one ejector assembly will therefore cause an ejector foot to come into contact with the side wall of the defective container thereby forcing the container downwardly through the tray.

摘要翻译： 为了确定存在有缺陷的容器的目的，可以在压力测试站对柔性壁容器进行自动压力测试的装置和方法。 检测到的有缺陷的容器此后可被运送到喷射器站并且物理地从它们各自的支撑盘排出。 压力测试站设置有一系列压力测试头，其在支撑在其托盘中的同时可移动地朝向和远离容器移动。 因此，每个压力测试头使得与支撑在托盘中的各个相应的一个容器的边缘密封接触。 喷射器台设置有排列数量的排列数量，其数量等于支撑在托盘上的容器的数量并相对于垂直的跨机器平面成一定角度定向。 如果容器被确定为有缺陷的（即，当在压力测试站处将加压空气等加压流体引入容器时，将不能实现和/或保持预定的压力条件），则控制器将发出信号 对应于与检测到的有缺陷的容器对准的喷射器组件中的一个。 因此，一个喷射器组件的选择性激活将使得喷射器脚与有缺陷的容器的侧壁接触，从而迫使容器向下通过托盘。