Automatic Honey Jam Jar Screw Capping Machine The Automatic Honey Jam Jar Screw Capping Machine is designed for automatic screw capping of honey, jam, peanut butter and other viscous products packed in jars. The linear capping system completes bottle feeding, cap sorting, cap conveying and screw capping in one continuous process. The machine is controlled by a PLC system for stable and accurate operation. The capping torque and working parameters can be adjusted according to