WILPAC Home Appliance Packaging Lines: Heavy-Duty Cartoning and Molded Cushioning for Export

A refrigerator or a washing machine leaves the factory inside a box that must survive a container stack, a crane lift, a rail leg and the final delivery drop. Damage claims in appliance export are rarely caused by the machine itself. They come from a carton that lost compression strength in humid air, a cushion that bottomed out, or a corner that took the first impact and gave way. Packaging engineers therefore treat the case and the cushion as one system, specified together with the pallet pattern and the container loading plan.

WILPAC builds appliance packaging lines around that system. A heavy-duty carton erector forms double-wall or triple-wall cases with reinforced bottom flaps and tapes them on four sides. Corner boards or honeycomb angle protection are inserted before the unit is lowered in by vacuum or clamp transfer. Molded EPE or EPP cushions, pre-shaped to the compressor bay and the door frame, are placed top and bottom. The accessory kit of power cord, manual, screws and drain hose is bagged and counted by a weigh-count station, then dropped into its own compartment. Lines for small appliances run the same sequence at higher speed, with a bagging station for the unit itself and a shrink or stretch hood for retail presentation.

Protection is proven, not assumed. Every new model is dropped, vibrated and compression tested as a packed unit, and the line is then set up to reproduce that packing exactly. Load cells under the cushioning stations flag a missing insert, a vision station checks corner board presence and label position, and in-line weighing catches an incomplete accessory kit before the case is sealed. For electronics, ESD-safe bags and humidity indicator cards are dispensed automatically, and the sealing station records temperature and dwell time for every case.

One controller coordinates erecting, cushioning, sealing, labelling and palletising, and it holds the upstream stations back when the palletiser queue is full, so no case waits on a conveyor long enough to deform. Barcode matching ties the unit serial number to the carton label and the pallet ID, which is what makes a recall or a damage claim traceable to a single hour of production. Pallet patterns are calculated from carton dimensions and container internal width, and the stacking report tells the loader which pattern to use in a mixed container. Changeover recipes are stored per model, so switching from a 60 cm refrigerator case to a microwave case is a recipe call rather than a mechanical rebuild. WILPAC commissions the line with the customer own drop test data and supports it through remote diagnostics.