The weldment to send ultrasonic energy to weld area, welding area as the intersection of the interface of two welded large acoustic impedance, so it will produce local temperature. Also, because of poor thermal conductivity of plastic, one was also unable to timely distribute, gathered in the weld area, resulting in two plastic contact surface rapidly melting, coupled with some stress, to get together. When the role of ultrasound to stop after a few seconds so that the pressure to make coagulation, thus forming a strong chain, to achieve the purpose of welding, the welding strength can be close to raw strength. Ultrasonic plastic welding machine generally used in the automotive industry, electronic industry, medical industry, household appliances, woven apparel, office supplies, packaging industry, toy industry and so on. Such as plastic body parts, car doors, automotive car dashboard, light car mirror, sun visor, interior parts, filters, reflective materials, reflective spike, bumper, cable, motorcycle plastic filters, heat , brake fluid tank, oil cups, water tanks, fuel tank, air hose, exhaust purifiers, tray plate;Plastic Electronics: prepaid water meter electric meter, communication equipment, Cordless Phone, mobile phone accessories, cell phone shell, metal case, charger, maintenance valve regulated lead-acid batteries, 3-inch floppy disk, U disk, SD card, CF card, USB connected plug-in Bluetooth; toys stationery: folder, album, folding boxes, PP hollow board,Pen loops, ink cartridges, toner cartridges,; Medical Daily: watches, kitchenware, Oral Liquid bottle, drip cap, cell phone accessories, gold soft brush, household items, hygiene products, children products, air mattresses, clothes hangers, tool holder, gardening supplies, kitchenware sanitary ware, shower, gold soft brushes, shower head, anti-counterfeit bottle, cosmetics bottle, coffee pot, washing machines, air dehumidifiers, electric irons, electric kettles, vacuum cleaners, speakers covered metal surfaces and civil engineering grid, etc.