此机型应用于包装粉体物料，适合包装活性碳酸钙、滑石粉、氢氧化镁、膨润土、高岭土、硅灰石、、炭黑、白炭黑、等矿物质或化工粉末的阀口袋包装。有效解决微细粉体包装体积大的问题，可根据生产环境和物料特性及设备使用方式的需要，为用户提供解决 ...

SALISBURY — It was U.S. Patent No. 2,628,465, and it changed the life of Ralph Penley Sr. “It’s a mechanical marvel, what he did,” grandson Bill Penley says today. Back in the early 1950s, Ralph ...