Those black adhesives are used for DTF.

Those Pronto Nano pellets create a sticky layer on your transfer film. These powder are sprinkled onto your DTF printed transfer film and placed in a drying oven to melt. Once done, you can lay the film on the fabric.You can cover approximately 100-150 full A3 pages with 700 grams of flour.Black particles are intended for black or dark colored textiles.”Balti milteliai skirti spalvotai ir tamsiai tekstilei” translates to “White powder for colored and dark textiles” in English.Quantity per package: 450 or 700 (g)