The invention relates to cylindrical
composite film digital paper for thermal sublimation
transfer printing, belonging to the technical field of thermal sublimation
transfer printing. The cylindricalcomposite film
digital paper comprises, from bottom to top, a substrate paper (1), a cylindrical
composite film (2) and a surface channel layer (3), wherein the cylindrical
composite film (2) is composed of a porous inorganic substance and network resin formed by
cyclodextrin, and the network resin formed by
cyclodextrin is interpenetrating network resin formed by crosslinking of
cyclodextrin withcarboxymethylcellulose
sodium and cationic
polyacrylamide under the action of polyisocyanate; and the cylindrical composite film (2) will expand and wrap up a dye and realizes multilevel separation of dye molecules and water molecules, and the
network density of the cylindrical composite film (2) is adjusted to improve separation performance. The cylindrical composite film (2) is directly connected with the substrate paper (1), so rapid
drying of ink can be achieved. The
coating of the cylindrical composite film
digital paper in the invention is of a two-layer structure; and the cylindrical composite film digital paper is simple in production process, capable of
drying immediately after printing, fast in ink absorption and good in
transfer printing effect, and meets the requirements of rapid printing and efficient production.