Solar panel glass removal machine

The glass removal machine takes a laminate that no longer has a frame or junction box and releases the glass from the encapsulant. On a conventional single-glass module that is one pane; on a double-glass module it is two, and the rear pane becomes a second glass stream that has to be collected separately from the front.

What comes out at the other end is a pane or panes of glass, a delaminated sheet with the cells and encapsulant, and a quantity of fines and fragments. How those three are split is the whole engineering question at this station.

Glass can be released quickly, with encapsulant still bonded to it, or slowly, with more of the laminate cleaned off. The first gives you a higher module-per-hour figure and a lower-grade output. The second gives you cleaner cullet and a slower line.

There is no universally correct setting, because the answer depends on what your glass buyer will accept. A processor feeding a float-glass operation has tighter requirements than one using cullet as an aggregate substitute. This is why we ask about the downstream outlet before we specify the station — and why a quote that does not ask is a quote that has guessed.

• Frame removed. Aluminium fragments in the glass stream are a rejection point for most glass processors.
• Junction box and cable removed. Copper and polymer must not be in the cullet.
• Modules presented consistently. A laminate that enters at an angle will break asymmetrically and produce a wider fragment size distribution.
• Broken feedstock separated. Loose fragments from damaged modules behave differently from an intact pane and should run as their own batch.
• Output route decided. The collection arrangement is set by the specification, not the other way round.