Step 1: Dry the raw materials and then add the plastic laser marking masterbatch.
Firstly, the plastic laser marking additive cannot be dried by being exposed to heat. If you heat the raw materials along with the laser additive, the plastic laser marking additive will melt with the raw materials together. Therefore, if you want to heat the materials, you should first dry the raw materials and then add our plastic laser marking additive. Only in this way can normal injection molding and marking be carried out.
Step 2: Mix the raw materials with the laser marking masterbatch evenly, and then directly inject or pelletize.
In plastic processing, there are two common methods: pelletizing first and then injection, or direct injection. The usual injection process is best carried out using themarking masterbatch, because during injection, the powder is heavier and uneven dispersion can cause the powder to sink. For the granulation process, the effect of using laser marking powder is better.
Step 3: After the product is molded, it can be directly marked using a laser machine.
During the laser marking process, the parameters of the laser need to be constantly changed to achieve the best marking effect. Many people do not adjust the parameters of the laser machine and only use a fixed parameter for marking. They think that if the marking is not good, they will change the addition amount. However, this will only increase the cost.
Step 4: The marking masterbatch merely assists the plastic itself in absorbing the laser, achieving a carbonization effect. Therefore, in many cases, it is the plastic itself that influences the marking outcome. For instance, if the plastic used is recycled or secondary material, the carbon molecular structure of such plastic has been damaged, and thus it fails to achieve the carbonization effect.
So, it is not the case that any plastic can complete the marking process simply by adding the laser marking masterbatch.