Balanced Laminate Panel
Tfm must be applied to the front and back of the panel to keep the panel balanced.
Balanced laminate panel. Melamine or tfm thermally fused melamine or lpl low pressure laminate. If the laminate is not balanced and symmetric macro warpage will certainly occur during cool down. A balanced laminate is one that for every θ ply in the lay up there is an equivalent θ ply in the lay up. This is produced in higher volumes than hpl.
Sometimes a brown backer is applied to the bottom if color is not needed. An example of a balanced laminate is 0 45 45 90 45 45 0 whereas an unbalanced laminate would be 0 45. Melamine paper is thermally bonded to particleboard or mdf panels. If the laminates are of different thickness they will shrink at different rates pulling the panel out of flat.
Cabinet liner is better than nothing but still not truly balanced. Here is a deeper explanation of both reasons for using a balance veneer. My theory in a laminate panel all three plies laminate core laminate are moving seasonally. Fact is pre lam is cheaper than doing it in house and you get a better product because they use hard glue not contact.
We buy pre laminated panels as much as possible almost always with laminate both sides. When a veneer is bonded to both sides of the panel each side is equally expanding and contracting and thus the panel is balanced the stress of the wood cell movement is similar on both sides of the panel.