Main use of PBT

PBT is a partially crystalline polymer obtained by Butanedial and Dimethyterephthalate condensation.
Main characteristics are:

- High stiffness
- High heat resistance
- High electrical characteristics
- Good chemical resistance
- High dimensional stability
- Low water absorption
- Good creep resistance

Main fields of application

Electrical

- Plugs
- Connectors
- Integrated circuit boards supports
- Switches
- Safety switches
- Relay parts
- Coil supports
- Carbon brushes holders
- Telephone parts
- Lamps holders

Automotive:

- Plugs covers
- Plugs distribution hub
- Air intakes
- Gasoline level indicators
- Pumps parts
- Doors handles
- Windows handles


Appliances:

- Microwave ovens
- Iron handles
- Coffee machines body
- Vacuum parts
- Toaster parts
- Fryer parts
- Kitchen handles and knobs

Office machines:

- Several components

Industrial grade PBT
PBT can be reprocessed many times without losing its characteristics. It is suggested though to apply fresh glass fiber in case of filled products in order to obtain better characteristics.
Conventional molding machines, in particular those able to process semi-crystalline resins, are used.
It is highly recommended to pre-dry the granules at about 100~120 °C for about 2~4 hours.

Molding parameters guide

Parameters                             Unfilled                                Glass filled
Temperatures °C
Cylinder                           230-235-250-245                   240-255-265-250
Mold                                     40~80                                     70~90
Injection speed                 Medium-High                                    High