The purpose of this study is to develop a device capable of continuously supplying PTFE fine powder. PTFE is widely used in various fields due to its excellent properties such as heat resistance, low friction, and chemical resistance. However, ungranulated PTFE fine powder tends to agglomerate and form fibers, which makes it difficult to supply continuously with high precision. In this study, we have developed a high-precision automatic supply device capable of automatically and precisely supplying PTFE fine powder, as well as a device for replenishing the hopper of the high-precision automatic supply device. However, based on previous research, we determined that a new supply method was necessary for larger supply volumes due to the impact of friction on the powder in the previously developed linear slide-type replenishment supply device. In this report, we propose a new replenishment supply device that lifts the powder filled in a straight hopper from the bottom and slides it outward using a curved blade to supply it by falling. The rotating slide drop method device is expected to reduce the impact of friction on the powder, which is an issue with the parallel slide-type device, as it can approximately halve the stroke during slide feeding. The proposed method, which consists of lifting and scraping actions, functions well in 33 feedings of 15 g and 3 g each. No agglomeration of the powder was observed due to the feeding device.
HANEDA et al. (Wed,) studied this question.