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How does the Large laminating machine deal with the bubble problem during the laminating process?

Publish Time: 2024-04-30
Large laminating machine is a crucial link in dealing with the bubble problem during the laminating process, because it is directly related to the quality and effect of the laminating. The presence of bubbles will not only affect the appearance of the product, but may also reduce its durability and performance. Here are some methods and measures to deal with bubble problems:
First, make sure that the printing ink layer is completely dry before lamination. If the ink layer is not dry, bubbles may easily occur during lamination. Therefore, you can use hot pressing and then gluing to delay the laminating time and allow the ink layer enough time to dry.
Secondly, if the printing ink layer is too thick, the adhesive coating amount should be increased, and the pressure and composite temperature should be increased appropriately. This helps strengthen the bond between the adhesive and the ink layer, reducing the possibility of bubbles.
In addition, the drying temperature and the surface temperature of the composite roller should be controlled during the coating process. Excessively high temperatures may cause skin formation on the adhesive surface or excessive temperature on the surface of the lamination roller, causing bubble problems. Therefore, the temperature needs to be adjusted according to the actual situation to ensure that it is within an appropriate range.
The quality and state of the film are also important factors affecting the generation of bubbles. If the film has problems such as wrinkles, looseness, unevenness or curling, the film should be replaced in time and the tension should be adjusted. At the same time, dust and impurities on the surface of the film should also be removed in time to ensure the smooth progress of the coating process.
The use of adhesives is also key. If the adhesive is applied unevenly, the amount is too small, or the concentration is too high, it may cause bubbles. Therefore, the coating amount and uniformity of the adhesive should be increased, and diluents should be used to reduce its concentration as necessary.
In addition to the above measures, manual exhaust is also an important link. After laminating with the laminating machine, air bubbles should be eliminated in time. This process requires the operator to gently roll with an aluminum roller to get the bubbles off the glass surface, and then seal them with a sealing tool. This process needs to be repeated several times to ensure that the air bubbles are completely eliminated.
To sum up, dealing with the bubble problem of Large laminating machine during the laminating process requires starting from many aspects, including ensuring that the ink layer is dry, adjusting the pressure and temperature, replacing the film, removing impurities, optimizing the use of adhesives, and manually venting wait. Only in this way can the quality and effect of the lamination be ensured to be optimal.
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