How to check the quality of the laminating machine after laminating, after the laminating machine is adjusted, when the product is sent to the paper feeding mechanism for laminating, we can obtain samples for inspection. Please note: Use a small amount of product for inspection before laminating, which can avoid a large amount of product waste. After the inspection is qualified, mass production can be carried out.
The quality inspection methods of laminated products are as follows:
1. Put the coated sample into the drying tunnel and bake it at 60-65 degrees Celsius for about 30 minutes. If there is no blistering, no delamination and no wrinkles, it is a qualified product. After baking, the tear-off film should not be separated from the paper perfectly.
2. Tear off one corner of the laminated film in the width direction, press and hold the paper, and then tear it off in the width direction. After tearing it off, if the print surface image and text imprint follow the adhesive layer and the fiber of the paper Transfer to the film indicates that the printed matter adheres well to the film and is a qualified product.
3. Put the sample on the creasing machine and apply pressure. If the pressed concave and convex part does not delaminate, it is a qualified product.
4. Soak the sample in cold water for 1 hour and take it out. If the plastic film does not separate from the printed matter, it is qualified.
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