Because of differences among the thermoplastic types,some of them can be easily welded and others hardly.In the diagram below, black square means good compatibility of the two plastics, and  they can be welded by ultrasonic easily; circle means the two plastics can compatible under some circumstances with the acceptable welding performance ;space means the compatibility of the two plastics is very bad,they are difficult to be welded by ultrasonic.

        The list below is the example diagram of thermoplastic ultrasonic welding compatibility ,for reference only, because many changes result in different outcomes:

thermo- plastics

ABS

ABS /PC

POM

AN

Acrylic acid series

BS

Fiber

Fluo- ropo- lymer

Nylon

Resin

PAI Polya- mide-imide

PC

TPES

PE

TPX

polyph- enylene sulfide

PP

PS

PSF

PVC

SAN-NAS-ASA

ABS

■

■

■

○

○

○

ABS/PC

■

■

○

■

POM

■

AN

■

○

■

○

○

○

○

Acrylic acid series

○

○

■

○

○

BS

■

○

Fibrin(CA,CAB,CAP )

■

Fluoropolymer

■

Nylon

■

Resin

○

■

○

■

○

PAI Polyamide-imide

■

PC

■

○

○

■

○

TPES

■

PE

■

TPX

■

Polyphenylene sulfide

■

PP

■

PS

○

○

■

■

○

PSF

○

■

PVC

○

■

SAN-NAS-ASA

○

○

○

○

○

■