Notes on the die-cutting of self-adhesive labels

Self-adhesive labels, also known as stickers, are made of paper, film or other special materials, with adhesive on the back and silicon protective paper as the backing. 

After analyzing the influence of surface material, adhesive and backing paper on die-cutting, combined with years of experience, several aspects that should be paid attention to can effectively improve die-cutting quality are summarized. Now let's have a look.

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a. Do not use a die cutting plate that has been die cut with paper materials, and then die cut the film materials, because the blade has been worn, it is not suitable to cut the film again.

b. When flatting die cutting, try to reduce the die cutting area, especially when full size small labels. Because of the large layout, many blades and unevenness, it is difficult to ensure the quality.

c. The gasket shall be replaced frequently during the flat die cutting, especially after the long version is processed. Because the cutting mark will affect the die cutting quality of the new version label.

d. Frequently check the die cutting quality, especially the labels automatically labeled. This can avoid mass die cutting quality problems. The specific inspection method is to use a signal pen to smear on the backing paper and check the penetration of the cutting marks on the backing paper.

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To avoid bubbles after labeling, the following measures shall be taken during labeling:

1. The bottle body shall be cleaned and dried in advance.

2. The bottle body shall be clamped and fixed by the conveyor belt when labeling, especially the plastic bottle with flat shape.

3. The base paper with good smoothness, such as the material of PET base paper, shall be selected to make the adhesive smooth on its surface and have good wettability and flatness after labeling.

 

e. Die cutting large area of complex labels, to professional manufacturers to make die cutting plate, so as to ensure die cutting accuracy.

f. To keep the blade sharp, establish a file to record the use of each die cutting plate, so as to replace the blade in time.

g. It is required to use a special blade with small angle and high hardness to cut film materials, especially PET materials.

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Post time: Oct-14-2022