Polyvinylbutyral

Self bonding wire with a polyvinylbutyral bond coat is easy to process and is used in a wide range of applications. The two major advantages of this adhesive type are its low bonding temperature which is required to bond the coils, and it's wide processing window.

Enamel properties

 Chemical base of selfbonding enamelSelfbonding typeSuitability of bonding methodsRecommended bonding conditionsFeaturesApplications
   Hot airOvenSolventElec. currentOven bonding temperatureSolvent type  
 
 
PolyvinylbutyralPolyvinylbutyralAB+++++++130°CEthanol, MethanolLow bonding temperature, wide process window, non-hygroscopic, low pricedStepping motors in quartz watches, instruments, voice coils, sensors, RFID and Transponders
PolyvinylbutyralBB----++--N/Aethanol methanolsolvent bonding type, slightly higher resoftening temperature than ABsame as AB
PolyvinylbutyralCB----++--N/AEthanol Methanolsolvent bonding type, fast dryingStepping motors, other small motors, sensors, transponder, receiver, headphones

 

Resoftening characteristics

 

Bonding characteristics

Hot air bonding characteristics

 

Solvent bonding characteristics

 

 

Oven bonding characteristics