The spinneret is one of the important parts of the spinning machine. Its function is to transform the viscous polymer melt or solution through the micropores into a trickle with a specific cross-section, which is solidified by a solidification medium or a solidification bath. And forming a thread. In the spinning process, the spinneret will be blocked by mechanical impurities, carbon fiber, gel, etc., the spinneret hole, when the spinneret hole is partially blocked, the spinning solution will overflow on the outer surface of the spinneret/plate, resulting in the original filament The size is uneven and there are problems such as fineness and hairiness. When the spinneret hole is completely blocked, it will greatly increase the rate of fiber breakage, which has a great impact on the fiber quality, so the spinneret must be cleaned regularly. Chemical Fiber Spinneret,Chemical Fiber Filament Spinneret Molds,Chemical Fiber Burner Cap,Chemical Fiber Sprinkler Head Changzhou Jier Precision Machinery Manufacturing Co., Ltd. , https://www.jier-spinneret.com
As the country's first set of embedded medical device information management system, it has “mastered†all the identity information of more than 1,700 medical devices and more than 30,000 kinds of medical materials, and can produce licenses, business licenses, product numbers for medical devices. Even the salesperson's ID card is checked one by one. Ye Qiang, deputy director of the Tenth People's Hospital, told reporters that this system is like an "electronic eye." Any medical device that has any qualifications that has passed its review and found it to be unqualified will be "as is". At the same time, through this system, the food and drug regulatory authorities can also effectively supervise and prevent the purchase of counterfeit medical devices.
It is reported that some high-profit, high value-added domestic and foreign well-known brands of medical equipment, imported medicines and medical equipment, has become a hot spot, some lawless elements even use overseas smuggling, import and export processing and other means to sell fake and inferior medical equipment in the country, and Once the hospital's individual medical staff purchases such medical devices for personal gain, patient safety will be difficult to secure.
Many factories now use ultrasonic cleaning machines to clean the spinneret. Ultrasonic cleaning is a cleaning method that is widely used in the industry and has a good effect. Its working principle is that when the ultrasonic is propagated in the cleaning liquid, the tiny bubbles in the cleaning liquid are in the sound field. Vibration occurs under the action. When the sound pressure reaches a certain value, the bubble will increase rapidly, and then the shock wave can reach thousands of atmospheres when it closes and bursts. The shock wave reduces the adhesion between the stain and the cleaned workpiece and can destroy insoluble stains. And make them dispersed in the cleaning liquid, so as to achieve the purpose of cleaning. Although the bursting energy of the bubbles is very high, because the volume of each bubble is very small, there will be no mechanical damage and obvious temperature rise for the workpiece.
Shanghai research and development successful medical device identification "electronic eye"
Shanghai's self-developed "electronic eye" for identifying counterfeit medical devices - the regulatory embedded medical device information management system completed the investigation of the national authorities on July 21. The system is currently in trial operation at the Tenth People's Hospital and will be promoted in hospitals throughout the city.