The quality of color coated aluminum bottle cap sheet

Important factors affecting the quality of color coated aluminum bottle cap sheet

Although the color coated aluminum ROPP cover is beautiful and practical, but after spraying and sterilization, the quality of the bottle cap is unstable, and there are always the following major problems. After a long time of research, Henan Signi Aluminum Co., Ltd. provides the corresponding solution.
 
1.  color coated aluminum bottle cap sheet, surface ink, coating permeability
The adhesion process of printing ink and coating on aluminum plate belongs to chemical change. Different ink and paint have their own curing temperature range, higher than this temperature range, coating brittle, easy to absorb moisture; below this temperature range, the curing temperature is not enough, easy to pervious. Therefore, the curing temperature is the key to solve the problem of the ink and coating penetration of the aluminum anti-theft bottle cap material. Even if the same material, the external environment has changed, the curing temperature will change accordingly. Therefore, Signi aluminum mastered the fixed temperature of ink and paint, and changed the process parameters according to the change of production environment, completely solved this problem.


 
2. Vertical cut and joint explosion paint of color coated aluminum bottle cap sheet
 
Explosion proof paint is a common problem in the vertical cut and joint of aluminium burglarproof cover. This is directly related to the coating properties, coating thickness and thermal expansion coefficient of the substrate.
 
According to whether the spray resistance is divided into two categories, spray resistant bactericidal coating and non spraying bactericidal coating. The paint that can not resist spraying can not meet the requirement of spraying sterilization, and the performance of spraying and sterilizing paint is high and low. Therefore, the packaging and printing enterprises should first choose to spray with the paint to kill the Bureau, and then in the production process through trial comparison, choose excellent performance, stable coating manufacturer as a long-term supplier.
 
Generally speaking, when the coating thickness exceeds the parameters specified in the manufacturer's instructions, the performance of spray disinfection will gradually decrease with the increase of coating thickness, so the coating thickness should be kept within the controlled range.
 
Thermal expansion coefficient aluminum sheet belongs to metal, the thermal expansion coefficient of metal is relatively large, so in the production process should maintain a constant ambient temperature, avoid the temperature difference is too large, affect the ink and paint and aluminum sheet bonding effect.
 
3.  color coated aluminum bottle cap sheet, Fading of printing ink
 
Printing ink and coating itself are organic compounds, organic compounds similar dissolution characteristics and physical penetration of substance molecules, is the main reason leading to the fading of printing ink. Moreover, a lot of spot color ink is through yellow, magenta, green three kinds of basic color ink ratio, and paint in spray high temperature under the action of color change, belongs to the normal phenomenon.
 
Terms of settlement：
 
1. practical cooking ink, ink classification is more and more thin, professional performance continues to improve, to solve the printing ink fade laid the material foundation.
2. pay attention to the process of matching, for easy reaction of paint and ink, as far as possible to avoid using in the same product.

4. color coated aluminum bottle cap sheet printing color difference phenomenon

In order to solve the phenomenon of color coated aluminum bottle cap sheet plastic printing ink, we must first strengthen the printing process control, ensure the printing color consistency in the production process; small liquor production enterprises in order of color coated aluminum cap materials, in order to minimize the color difference between batches, take a number of repeated use, easy to use control color printing and other measures, can play a very good effect.printing color difference phenomenon
 
In order to solve the phenomenon of color color coated aluminum bottle cover plastic printing ink, we must first strengthen the printing process control, ensure the printing color consistency in the production process; small liquor production enterprises in order of color coated aluminum cap materials, in order to minimize the color difference between batches, take a number of repeated use, easy to use control color printing and other measures, can play a very good effect.
 
4. color coated aluminum bottle cap sheet after spraying and losing light
 
The water used for sterilizing spray should be replaced regularly in the wine producing enterprises. If used for a long time, the water will be obviously acidic, leading to the loss of light after the spraying of the cap.
 
Terms of settlement：
 
In order to reduce the cost, a part of color coated enterprises are not exposed to varnish, which leads to the loss of light after spraying.
 
The higher the film thickness is, the worse the spray sterilization effect is. Therefore, some enterprises pursue the effect of spray disinfection, reduce the film thickness, lead to lower brightness of the cover, and even worse after spraying disinfection.