Solar Module Lamination

PV Module Lamination - Upon completion of the strings of cells, the interconnected cells are assembled into modules of 3 or more strings and placed within a sandwich structure of EVA (ethylene vinyl acetate) on either side of the cells, a top sheet of tempered glass and a PV (polyvinyl) backsheet.

The laminated cells undergo a process of pre-heat, heating and cooling to form a chemical bond which hermetically seals the module.

PTFE Group PTFE Coated Fabrics are used as protective coverings on the laminating press surfaces because of their heat resistance and clean release properties. PTFE Coated Belts are used to convey the panel components through the lamination process.

Key Considerations:

  • Operating Temperatures - Ensure that the coating process does not exceed or 287°C / 550° F
  • Fabric Selection - Usual fabrics are the Anti-static 10 and 14 mil products. Selection depends on cycle dwell time and smoothness of finish required.
    PTFE Group 100-10 fabrics allow a shorter dwell time and provide a smoother lamination impression than 100-14.
  • Fitting method - There are 2 common methods: PTFE coated lamination fabric supplied in roll form and secured with bolted metal bars; and PTFE coated fabric with fused loops that slip over securing bars on each end.

Recommended Materials

This process generally uses laminated belts using combinations of: