Sticker, compared with the traditional labels, with no gluing, no glue, no dampened with water, no pollution, saving labeling time, etc., wide range of applications, and convenient. Various types of adhesive stickers can be applied on plain paper stickers are incapable of material, it can be said, is a versatile sticker stickers, adhesive labels printed with the traditional printed matter compared to the great difference, sticker labeling machine interaction is usually printed on the processing, multi-processes at once, such as fax printing, die cutting, waste discharge, cut sheets, and rewinding, etc. Visible, sticker printing technology and printing equipment for a higher demand, so choosing sticker points to note: ⑴ labeling objects based on the type, grade, quality, paste, surface characteristics, use of the environment and user requirements into account. If you want good transparency polypropylene adhesive stickers made of a transparent bottle label affixed to the body can produce no sense of fashion labels, can improve the quality of goods, to stimulate consumer desire to buy. The PVC film flexibility, shrinkage, opacity, processing characteristics and labeling features are very good, and the colorful, high contrast, it can attract the attention of an advocacy role of promotional merchandise. ⑵ filmic sticker on the surface must be smooth, dense, uniform density, color consistency, good transparency, in order to ensure uniform ink film with a small batch of color printing products. ⑶ sticker should be uniform thickness, strength index to pass. Printing process, printing pressure applied with adhesive thickness, and if uneven thickness, the printing pressure is not uniform, it will lead to the writing or stickers printed ink with a shallow depth. If the poor film strength, the printing process is difficult to control the tension of the film, be die cut and stripped a significant impact. ⑷ sticker to smooth some of rewinding tension should be uniform. Good flatness, printing correctly conveying, run, register and winding. Rewinding the film proper tension should be uniform, as the tension is too small, the film substrate relaxation, vertical and horizontal misregistration; such as too much tension, the substrate transverse shrinkage, chromatic instability, it is difficult to normal printing. ⑸ film class sticker even with anti-corrosion, anti-aging, do not fade, shrink, swell ratio of small features. Such as poor corrosion resistance, easy to aging, fading, then made stickers are not durable, but also affect the sale of goods and use. If the contraction, expansion ratio is greater, not only affect the printing of the overlay accuracy, but also the stickers in the course of deformation, affecting the sale of goods and use. Especially luxury goods labels, should avoid products not expired, and stickers that have deteriorated in the embarrassing situation (including plastic stickers aging aging and fading ink and other reasons). If necessary, respond to plastic or stickers for anti-aging experiments, testing its performance. ⑹ optional sticker also within the validity period, maintain a good sticky.