皮具热转印花膜

Leather with heat transfer film.

Sublimation spent membrane refers to the graphic with adhesives, in the combination of heat and pressure, along with the base layer from the carrier film, solid heat transfer printing film on the surface of the substrates, special function. Heat transfer film is generally composed of 3 ~ 5 layers. The three-layer heat transfer film is composed of substrate, printing layer and adhesive layer. The four - layer heat transfer film consists of base layer, separation layer, printing layer and adhesive layer. The five - layer heat transfer film consists of base layer, separation layer, printing layer, adhesive layer and hot melt adhesive layer.

The four - layer heat transfer film structure, the following four - layer transfer film as an example to illustrate the requirements of each layer and its role.

Base layer: it is the carrier of dispersion agent, ink and adhesive coating. It is required that the carrier has low temperature, pressure and tensile deformation. Mold layer: is the coating a layer of mold release agent, remain solid at room temperature, in a certain temperature can be melt, and the base layer of cohesive force smaller, can quickly pulled away from base layer, no adhesive residue. The separation agent is the key to the transfer of the substrate from the substrate to the substrate. It requires good abrasion resistance, protection of color ink, reduce the radiation intensity of ultraviolet ray, reduce the adverse factors on the ink in the air, could extend the ink, thin film and buffer base material and printing layer of adhesion. Printing layer: this layer is the basic of the texture aesthetic of the transfer. With the development of printing technology and image processing technology, the printing layer has various colors and patterns. In particular, using gravure printing to obtain the text, can very well reflect the delicate graphics, to make its packaging decorative effect more perfect. Adhesive layer: its basic property is to have a high adhesion to the substrate surface, so as to ensure that the printing layer and substrate surface are combined firmly. The adhesive must be matched with the substrate. Different adhesives, due to different chemical composition, are far from the adhesion of the substrate. The choice should be made according to different substrate.