Module level protection is about three specific points: the frame corner, the glass edge that sits a few millimetres inside it, and the junction box on the rear face. A board that covers the frame but rides onto the glass has moved the risk rather than removed it, and a board that presses the junction box can crack a solder joint before the module is ever installed.
Profile data for single modules
| Module detail | Board | Rule |
|---|
| 30 mm frame | Leg 30 mm plus 2 mm, 5 mm wall | Stop on aluminium |
| 35 mm frame | Leg 35 mm plus 2 mm, 4 mm wall | No glass overlap |
| Junction box proud of frame | Spacer board around box | Frame carries the load |
| Frameless laminate | U profile with foam insert | Paper alone is not enough |
| Returnable pack | Lighter board for in-plant | Export leg separate |
Sizing the leg to the frame, not to the module
Frames vary: a 30 mm frame and a 35 mm frame look identical until a board sized for one is fitted to the other and overlaps the laminate by three millimetres. The leg must stop on the aluminium. We cut the leg to the frame width plus a 2 mm tolerance, and we ask for the frame drawing before quoting a new module size.
On a narrow frame, go up in wall rather than out in leg. A 5 mm wall on a 30 mm leg carries more than a 4 mm wall on a 40 mm leg that overlaps the glass.
The rear face is not free space
Junction boxes, cables and mounting rails all sit on the rear face, and the pack load runs through whatever is thickest. If the junction box is thicker than the frame, the pack rests on the box and the load path is wrong. In that case a spacer board is fitted around the box so the frame carries the load.
Cables should be routed clear of the board edge. A cable pinched between board and frame will chafe through its insulation over a long sea leg.
Reuse and the returnable pack
Large installers increasingly use returnable steel or plastic packs, and paper boards are consumed on each trip. That is acceptable where the board is cheap relative to the module, but it should be a deliberate decision, not an oversight. Where a returnable pack is specified, we quote a lighter board for in-plant moves and a heavier one for the export leg.
Questions buyers ask before ordering
How do I know the leg will not touch the glass?
Send the frame drawing. We cut the leg to the frame width with a 2 mm tolerance and mark the leg on the packing list.
Can you protect frameless modules?
Not with paper alone. Frameless laminates need a foam or moulded edge insert, and we will say so rather than sell a board that will not work.
What about the junction box?
Where the box is thicker than the frame, a spacer board around the box keeps the load on the frame.
Is printing useful at module level?
Yes for model and serial range, which speeds up site sorting.
Do you supply in container quantities?
Yes. 200,000 meters per day of capacity, with 7-15 working days lead time after approval.
Mail the dimensions you need, the number of pallets per month and the destination port to mona@hengnicepacking.com for a costed offer.
