Printing: the need to use is printing ink and add raw materials, using a single layer of plastic film for in-printing (in-printing is printed inside the film, in order to compound when it is sandwiched between two layers, the use of color will not fall off).
If you don't have a peritoneum, it's recommended to use a printing press faster;If cut into pieces, use special printing machine for packaging bags, or screen printing, screen printing surface is relatively smooth, process operation is simple, the cost is low, but the adhesion of ink is relatively high.For curved or irregular surface can be used thermal transfer, good adhesion, not easy to fade, but the requirement to have transfer equipment.