When evaluating a head cap making machine (commonly for bouffant or doctor caps), you must prioritize production speed, typically ranging from 60 to 120 pieces per minute. Ensure the machine utilizes ultrasonic welding technology for seamless bonding, as this guarantees higher durability and hygiene compared to traditional stitching. Additionally, verify the compatibility with different raw materials, such as non-woven fabrics (PP) or PE films, and check if the machine supports adjustable sizing for various cap diameters (e.g., 18", 21", or 24").