Tacky transfer paper.

Sublimation transfer paper coated so that heat makes it grip the goods, instead of lying loose on them the way plain paper does. Beaver Paper sells the same grade in two tack weights, light and heavy, and states what they are for: sportswear and activewear, the fabrics that shrink and move while the image is going in. That movement is the whole reason the product exists, because a garment contracting under the platen, or a sheet floating when the press opens, prints a second offset copy of the image. Tack is not free. These papers are made for soft substrates, so reaching for one on a mug or a metal panel solves nothing, and on a knit that would otherwise creep, heat tape at the corners is the cheap version of the same idea. Pin down the word release before ordering: on the sublimation side it describes how readily a paper gives up its dye, and in film lamination it means the siliconized liner an adhesive is stuck to, which is a different product on a different shelf.