Separate a claimed PU logo layer from a PET carrier sheet when comparing heat-transfer labels, then confirm the actual quoted construction.
Buyer perspective
PU and PET may describe different parts of a heat-transfer label rather than rival finished products. A quote should say which material forms the visible mark, which is only a temporary carrier, and what remains on the garment. Do not publish a comparison based on a name alone; request a written layer stack and an applied sample.
Options
One quote says PU label; another says PET film label. Those names may refer to a visible logo and a temporary carrier, not two finished alternatives. Ask both sources for a layer-by-layer statement and compare the result only after the materials and release sequence are explicit.
Have the supplier identify face, color or logo layer, adhesive, carrier, and any release liner. Mark which parts remain on the garment after application and which are removed.
Apply the same artwork size to the same fabric with the supplier's current process. Compare edge definition, hand feel, visible film, and detail clarity on the applied marks, not on unused transfer sheets.
Write the accepted finished appearance and attach the verified construction. If PET names a carrier only, do not put PET in customer-facing material copy as though it were the logo layer.
A material comparison is useful only after the function of each named layer is known.
What to decide
Ask the supplier to identify face, printed or molded logo layer, adhesive if present, carrier, and release step for the exact option. Mark which layers stay on the garment. An image of a finished logo cannot establish an unseen carrier material.
Compare options using the same logo, dimensions, fabric, placement, and equipment. Inspect edge, fine details, hand feel, and any visible residual film after application. Keep observations tied to the actual sample instead of generalizing to all PU or PET products.
Specify the required finished appearance and application result, then attach the supplier's construction statement and current instructions. If the PET term refers only to the carrier, do not list PET as the finished label material on product copy.
Send your artwork, quantity, destination, and specifications for a tailored quote.