First, the choice of self-adhesive printing raw materials

When selecting raw materials, we must choose high-quality self-adhesive materials with qualified physical and chemical indexes, rather than products with expired or unstable physical and chemical indexes. Although the latter price is low, but due to the unstable quality of such materials, large consumption in each process, and even lead to the normal processing of equipment, waste of raw materials at the same time also waste a lot of manpower and material resources, the processing cost of the finished product label is not necessarily low, more serious is that there may be customer returns, and even lose customers. The selection of raw materials should be considered from the following two aspects

1.Self-adhesive printing and self-adhesive printing processing characteristics

①The surface gloss and color consistency of the self-adhesive printing surface material and the uniformity of the density determine the uniformity of the ink absorption of the self-adhesive material, and also determine the color difference of the same batch of label printing.

The coating strength of the surface material determines whether a large amount of paper powder will be produced when printing, and is also an important indicator to determine the quality of printing.

②The thickness uniformity and strength indication of self-adhesive printing base paper and surface material

These indicators are not only related to printing performance, but also an important indicator to determine the uniformity of die cutting and the speed of waste discharge and paper edge breakage. If these indicators are too low, the label machine can not be produced at high speed

③ Flatness or uniformity of rewinding tension of self-adhesive printing materials

Whether it is single sheet printing or web printing, the flatness of the material determines whether the printing can be correctly fed, run and register, and receive paper. For the reel material, the rewinding tension will play an important role in the flatness of the end face of the reel material, whether there is infiltration and whether it can be correctly registered.

④ The uniformity and correct coating amount of self-adhesive printing adhesive and silicone oil coating

These indicators directly affect the stripping force (release force) between the label and the bottom paper, and the size of the stripping force directly affects the die cutting waste and the speed of the machine, and the stripping force also determines the label marking condition, that is, the application situation.

In addition, the size of the amount of glue will also affect the cementing condition of the end surface of the material. Therefore, the purchase of self-adhesive materials should be carefully tested, and those materials with the appropriate amount of glue and silicon coating should be selected.

Sinograce Chemical Co., Ltd. is mainly based on water-based glue, water-based self-adhesive adhesive, water-based label adhesive, welcome customers and friends to negotiate!