Technical Articles
Why Rigid Box Magnets Misalign After Wrapping
Troubleshooting guide to rigid box magnet misalignment after wrapping: board caliper, magnet pockets, wrap stretch, lid warp, and corrective buyer actions.
Quick answer
Rigid box magnets misalign after wrapping when board caliper, pocket position, wrap tension, or lid warp move the magnet pair off axis. Approving magnets on a white sample often misses wrap-induced shift.
Inspect the failure mode
Check weak closure, sideways pull, visible magnet bumps, or lids that spring open. Measure magnet center positions on failed lids versus the approved master.
Verify board and pockets
Caliper variation changes lid/base geometry. Confirm pocket depth, magnet grade/size, and adhesive. Shallow pockets let magnets drift during wrapping.
Review wrap process
High wrap tension or uneven glue can twist thin lids. Soft-touch or stretchy wraps hide misplacement until closure testing.
Validate after full finishing
Approve wrapped, finished boxes with insert load if the insert presses the lid. Re-check after humidity conditioning for export lanes.
RFQ
Failed photos; magnet size/grade; pocket drawing
Board caliper; wrap material; process notes
Closure force target; humidity check
Rework plan; retention masters
Related PackTrades Knowledge
Rigid Box Magnetic Closure Spec Checklist, Drawer Gift Box Tolerance Specs for Electronics Kits, How to Spec Grey Board Caliper for Rigid Boxes, Why Soft-Touch Packaging Scuffs in Shipping.
Buyer Checklist
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