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china-plasticmolding

Plastic Welding

China Synergy offers hot-plate and ultrasonic welding to join molded plastic components with controlled strength, seal integrity and production efficiency.

Hot Plate Plastic Welding

In the hot-plate process, mating surfaces are heated until they melt, then pressed together to form a permanent bond. It is well suited to large, curved or thick-walled parts where ultrasonic energy cannot reach effectively.

Welding of Toilet Seat

Hot plate plastic welding production

Benefits of Hot Plate Welding

Sample Applications

Automotive lamps and turn signals, toilet covers, bumpers, appliance balance rings, vacuum cleaner housings, floats, filters, meters and other large irregular products.

Car Light Assemblies

Ultrasonic Plastic Welding

High-frequency ultrasonic energy melts the contact surfaces of two plastic parts and bonds them in seconds. It is ideal for smaller components, high-volume production and precise joint geometry.

Compatible Materials

PS, ABS, acrylic, SAN, PMMA, PC and PC blends, PPS, polysulfone, PVC, ASA, PPO, PBT, PET, nylon, polyacetal, Ultem (PEI), PP with glass fiber, PE and related amorphous or semi-crystalline thermoplastics.

Production Examples

Typical Product Categories

Electrical & Lighting

Plugs, sockets, wire reels, fuse boxes, flashlight housings, signal lights and plastic chassis components.

Computer & Office

Device handles, ink bottles, USB enclosures, speaker parts, photo frames, camera housings and projector components.

Household Products

Small appliance parts, electric iron handles, kettle components, vacuum cleaner nozzles, coffee filters and furniture handles.

Transportation

Taillights, retroreflectors, interior trim, sun visors, instrument panels, vent flaps and steering-wheel sub-assemblies.

Sports, Toys & Leisure

Toy shells, model cars and trains, ski accessories, water tanks and knife handles.

Medical & Cosmetics

Cosmetic jars, toothbrush components, blow-molded containers with injection-molded caps, and filtration housings.