You get a bonus with base sheets
When you use anti-slip paper as a base sheet, you reduce the pressure of the load and strengthen both the capacity and stability. It does not take much before the stretch foil loses its grip on the pallet when there is no base sheet: If you have a load that slips and the stretch foil comes off the pallet, then there is no longer contact between the products and the pallet, which can result in it tipping over or collapsing.
If you add a base sheet, it creates friction that allows for better contact. You will also be able to prevent unevenness from boxes placed with one side in one of the pallet’s grooves.