WHAT ASPECTS ARE INCLUDED IN THE QUALITY INSPECTION OF STICKERS

Self-adhesive quality inspection

 

  1. Check whether the sticker material has burrs

 

The edge of the roll of self-adhesive material is smooth and non-damaged, which is the basis to ensure the quality of the label printing. Therefore, before printing, carefully check whether the slitting Situs Slot Gacor edge of the roll of self-adhesive material has burrs and whether it is due to improper storage and transportation. However, there is damage, and the roll of self-adhesive material should be rolled down 4-5 times, and the slitting edge should be carefully checked.

 

  1. Check whether there are cracks on the self-adhesive material

 

When the self-adhesive material is slit, if the slitting knife is not adjusted properly or the blade is not sharp enough, cracks will appear on the surface or bottom paper of the self-adhesive material, and the fibers drawn from the crack will be stuck by the adhesive. live. The occurrence of cracks may be continuous or random. There may be one side or both sides of the roll of self-adhesive material. Therefore, before the self-adhesive material is printed on the machine, you must carefully check the backing paper and Whether there are small cracks Slot Gacor Gampang Menang on the tissue.

 

Then, take a piece of sample paper that has passed the above inspection, peel it off the backing paper and check again for cracks on the bottom paper and backing paper, because the cracks are sometimes very small and can only be found after separating the backing paper and the top paper. It is worth noting that the ink and adhesive will gradually accumulate on the paper guide roller of the printing press during the printing process, which will also cause cracks on the edge of the self-adhesive material. Therefore, even if printing Slot Gacor has already begun, the above problems cannot be ignored.

 

  1. Check whether the edges of the self-adhesive material are sticky, and whether the bottom paper is missing silicon

Adhesive material at the edges or missing silicone oil in some areas on the bottom paper will cause the face paper to break during the printing process, which will result in normal production. Therefore, before printing, take a piece of sticker material about 1 meter long and peel it off by hand to see if there is any part that can’t be peeled smoothly and uniformly on the edge or other parts. Usually, the edge adhesion between the face paper and the bottom paper occurs on a slit roll of the entire roll of coated self-adhesive material, and generally only occurs at the outer layer of 7 meters to 10 meters, so when you encounter a slit roll There is adhesion on the edge of the self-adhesive material. Don’t immediately assert that the entire roll of paper has this problem.

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