Causes and Solutions for Wrinkling on the Surface of Tea Leaf Plastic Packaging
Release Time:
2021-04-15
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Summary
Tea Leaf Plastic Packaging If the quality is good, the printed pattern should be clear, the colors bright, and the surface smooth and flat. However, sometimes the tea leaf plastic packaging surface appears wrinkled, which seriously affects the appearance of the plastic packaging bag. So Tea Leaf Plastic Packaging What causes surface wrinkling? How to solve it? Below is a brief introduction.
Tea Leaf Plastic Packaging Causes of surface wrinkling:
1 1. The tension of the two base films during lamination is incompatible;
2、 Tea Leaf Plastic Packaging 2. The laminated base material itself is uneven in thickness;
3 3. Excess residual solvent, insufficient drying of the adhesive, resulting in weak bonding strength;
4 4. Insufficient, excessive, or out-of-range glue application, unevenness causing poor adhesion and localized wrinkles;
5 5. Too low winding tension, resulting in loose rolls and floating of the laminated film, providing the possibility for the base material to shrink;
6 6. Quality issues with the laminated rubber roller. The surface is not on a straight line causing thickness variations; delamination between the rubber and the iron core of the roller causes uneven force, resulting in wrinkles on the laminated film.
Problems are not scary; the key is to have solutions. So, for Tea Leaf Plastic Packaging the wrinkling issue, how should it be solved? Here are several methods:
1 1. Adjust the unwinding tension of the two base films to make them compatible;
2 2. Check Tea Leaf Plastic Packaging the laminated base material, and replace it if the thickness is uneven;
3 3. Use adhesives with higher initial tack and control the amount of residual solvent;
4 4. Check the glue amount and its uniformity. If there are problems, improve from the glue applicator, scraper, and glue concentration to meet requirements;
5 5. Increase winding tension to avoid floating;
6、 Tea Leaf Plastic Packaging 6. Replace the rubber roller during production.
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