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How to identify the quality of self-adhesive anti-counterfeit labels, here to tell you

by:LG Printing     2021-04-27
Why do the self-adhesive anti-counterfeiting labels occupy a large proportion in the market today? Many companies don’t know much about it. In fact, many labels on the market are made of self-adhesive materials. Self-adhesive is a kind of material, also called self-adhesive label material. It is a composite material with paper, film or other special materials as the fabric, adhesive on the back, and silicon-coated protective paper as the base paper. Self-adhesive anti-counterfeiting labels are used very frequently. What issues should companies pay attention to when choosing? , Today, Shangyuan will teach you how to judge the quality of self-adhesive labels.

   One, check if there are any burrs on the sticker

  The self-adhesive material of the roller has smooth edges without damage, which is the basis for ensuring the quality of label printing. Therefore, before printing, you must carefully check whether the cutting edge of the roller self-adhesive material has burrs, and whether it is damaged due to improper storage and transportation, and roll the roller self-adhesive material down 4-5 times to carefully check the cutting edge.

   2. Check if there are cracks on the sticker

   When cutting rubber, if the cutter is not adjusted properly or the blade is not sharp enough, cracks will appear on the surface paper or backing paper of the rubber, and the fibers pulled out from the crack will be glued. The appearance of cracks may be continuous or random, and may appear on one or both sides of the self-adhesive material of the roller. Therefore, before printing the self-adhesive material on the machine, it is not necessary to carefully check the base paper and surface paper for small cracks.

   Then, take a piece of the sample paper checked above, peel it off on the backing paper, and then check the backing paper and the backing paper for cracks, because the cracks are sometimes very small and can only be found by separating the backing paper and the face paper. It is worth noting that during the printing process, ink and adhesive will gradually accumulate on the paper guide roller of the printing press, which will also cause cracks on the edges of the adhesive material. Therefore, even if printing has already started, the above problems cannot be ignored.

   Third, see if the edge of the sticker is sticky.

   The edge of the adhesive material is stuck or some areas of the base paper lack silicone oil, which will cause the waste paper to be discharged when the paper is damaged during the printing process, and normal production cannot be performed. Therefore, before printing, take a piece of self-adhesive material about 1 meter long and peel it off by hand to see if the edges or other parts can't peel off smoothly and evenly. Under normal circumstances, the edge adhesion between the face paper and the bottom paper occurs on the entire roll of cutting roll coated with self-adhesive materials, generally only on the outer layer of 7-10 meters, so when the edge of the cutting roll of self-adhesive materials has When sticking, don't immediately assert that the entire roll of paper has this fluffy disease.

   In addition, it should be noted that the force used to peel off the light-weight facial paper is greater than the force used to peel off the heavy-duty facial paper. The lighter the tissue, the tighter the hand feel when peeling. Because of this, it is sometimes impossible to die-cut the adhesive material selected by the customer according to the shape required by the customer at the normal printing speed.

  4. Check whether the edges of the sticker are cut neatly

   If the cut end face of the self-adhesive material of the roller is not flat, it will not only affect the alignment during printing, but also make it difficult to discharge waste due to the change of die cutting position; if the tension is inconsistent during rewinding, it will cause paper tension during printing The change. Moreover, uneven tension can also cause printing quality problems.

   The above is the method of quality identification of self-adhesive anti-counterfeiting labels shared by the editor of Shanghai Shangyuan today. Self-adhesive anti-counterfeiting labels are currently a relatively large number of anti-counterfeiting products. Shanghai Shangyuan is engaged in the production of anti-counterfeiting labels. Years, to assure you, one-stop service, to give you an enjoyable experience and trust.

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