Heater head with a double heater rail unit and an automatic silicon belt transport system.

The transport system is used for a conductive silicon belt, also called an interposer belt.

This belt protects the heater rail and the product from the transient very high forces which are necessary for the heat sealing process.

It also improves product quality or adhesion quality, by better distribution of the adhesive, especially between the conductor paths on the circuit board.

The system is driven by an electric motor. The conveying length of the belt and the number of heat seal cycles between the transport pulses can be adjusted in the system.

The belt tension, the belt length and the general availability of the belt are automatically monitored.

Consequently the process is protected against product damage which could be caused by torn belts or used belts.