Dry film is widely used in the printing and packaging industry because of its environmental protection, energy saving, and easy operation. However, in actual production, some companies do not pay attention to or ignore the precautions of dry film coating. Or do they not know which printing products are suitable for dry film coating and which printing materials are not suitable for dry film coating, resulting in production Passive even caused irreparable damage. What problems should you pay attention to in the dry film?
The BOPP film (roller) coated with hot sol is safely placed on the holder of the laminator, and then it is led to the electrochromic chrome roller through the guide roller. The main motor is started to slowly turn the electrothermal roller, and the printed product facing the film is faced. On the side, positioning the baffle close to the side, realize the paper feeding under the action of the transmission belt. After the printed product and the BOPP film are passed through two electrothermal rollers, the glue on the BOPP film is melted by the heat, and simultaneously pressed by the two heat rollers, the film is affixed to the printed product, and the adherence of the film waste is firm, smooth and smooth. Finally, the entire process of the film is completed after pressure roller shaping.
In view of the characteristics of the dry film, we must pay attention to the following points during the operation: 1. Check the uniformity of the BOPP film coating before the machine is installed, and the coating surface of the film (after passing through the heat roller) should be consistent with the color of the printed product. 2. Each roller should be kept clean and parallel, the gap at both ends is consistent, and the rotation is flexible; 3. The gap of each roller should be adjusted depending on the thickness of the paper; 4. The pressure roller pressure should not be lower than 0.2Kpa; 5. The heating roller temperature should be controlled between 100-125°C, and it should be stable at 120±2°C; 6. The side positioning baffle should be determined according to the width of the product film; 7. The paper feeding should be continuous, but the printing product should be connected. Should not exceed 0.2cm; 8. The printed product must be cleaned with dust before the film is coated with the dust; 9. The printed product is the solid bottom printing or the larger amount of ink should not be used dry coating; 10. The paper is less than 60g/m2 , Over 380g/m2 should not be used dry film; 11. Film uneven or inconsistent tension at both ends should be prohibited to use; 12. Ink is not dry printed products is not covered; 13. Film speed according to the temperature of the electric roller And the speed of the paper feed, it is best to stabilize at 150 / min; 14. Cover the film of the printed product to be cooled and then put into the next procedure to use; 15. Drag film should not exceed 60% humidity.
If you ignore the above factors will result in: the film is difficult to film, adhesion is not strong, blistering, stripping, snoring, with dirty, dull and other ills, and even directly to the subsequent process to bring homework difficulties and trouble.
The BOPP film (roller) coated with hot sol is safely placed on the holder of the laminator, and then it is led to the electrochromic chrome roller through the guide roller. The main motor is started to slowly turn the electrothermal roller, and the printed product facing the film is faced. On the side, positioning the baffle close to the side, realize the paper feeding under the action of the transmission belt. After the printed product and the BOPP film are passed through two electrothermal rollers, the glue on the BOPP film is melted by the heat, and simultaneously pressed by the two heat rollers, the film is affixed to the printed product, and the adherence of the film waste is firm, smooth and smooth. Finally, the entire process of the film is completed after pressure roller shaping.
In view of the characteristics of the dry film, we must pay attention to the following points during the operation: 1. Check the uniformity of the BOPP film coating before the machine is installed, and the coating surface of the film (after passing through the heat roller) should be consistent with the color of the printed product. 2. Each roller should be kept clean and parallel, the gap at both ends is consistent, and the rotation is flexible; 3. The gap of each roller should be adjusted depending on the thickness of the paper; 4. The pressure roller pressure should not be lower than 0.2Kpa; 5. The heating roller temperature should be controlled between 100-125°C, and it should be stable at 120±2°C; 6. The side positioning baffle should be determined according to the width of the product film; 7. The paper feeding should be continuous, but the printing product should be connected. Should not exceed 0.2cm; 8. The printed product must be cleaned with dust before the film is coated with the dust; 9. The printed product is the solid bottom printing or the larger amount of ink should not be used dry coating; 10. The paper is less than 60g/m2 , Over 380g/m2 should not be used dry film; 11. Film uneven or inconsistent tension at both ends should be prohibited to use; 12. Ink is not dry printed products is not covered; 13. Film speed according to the temperature of the electric roller And the speed of the paper feed, it is best to stabilize at 150 / min; 14. Cover the film of the printed product to be cooled and then put into the next procedure to use; 15. Drag film should not exceed 60% humidity.
If you ignore the above factors will result in: the film is difficult to film, adhesion is not strong, blistering, stripping, snoring, with dirty, dull and other ills, and even directly to the subsequent process to bring homework difficulties and trouble.
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