Some effects of color paint on the intensity of injection molded plastic
Published on January 20 2015
1). The strength defects caused by using the color species for color matching
Because the color species needs to fully mixed with the raw material in the injection molding machine heating cylinder after melting. It is unlike toner, which has been evenly mixed with the raw material in the roll feeder in advance. So the injection plastic masterbatch is easily to appear the color mixture problem when using the color species for color matching.
More importantly, due to the brittleness of some kind of color species itself is more serious, so if the content is too high will make the plastic brittle. It is even worse if the unevenly division color species focus to the plastic water flow lines position.

So when you encounter the problem of mixing and brittleness can’t be solved, you might be change color species to toner if use color species for color matching. I believe it will receive a very good improvement.
2). The content of titanium effects on the strength of white injection molded parts Titanium is generally used for white plastic coloring. The more the titanium contents the whiter the injection plastic is, in the same time makes the injection plastic brittle.
Titanium is a metal powder, which is can’t be able to immiscible with plastics. It is equivalent of an impurity exists in plastic, destroying the structure of the plastic and the connection between the rubber and rubber. As a result, the strength of the plastic will falling as the content of titanium increased, the PVC pieces can be easily pulled and twist off just like the rubber, and the injection molded parts which has water flow lines position will decline more serious.
Therefore,in the case that can meet the requirements of color, the content of titanium in color masterbatch should be as little as possible.
Because the color species needs to fully mixed with the raw material in the injection molding machine heating cylinder after melting. It is unlike toner, which has been evenly mixed with the raw material in the roll feeder in advance. So the injection plastic masterbatch is easily to appear the color mixture problem when using the color species for color matching.
More importantly, due to the brittleness of some kind of color species itself is more serious, so if the content is too high will make the plastic brittle. It is even worse if the unevenly division color species focus to the plastic water flow lines position.

So when you encounter the problem of mixing and brittleness can’t be solved, you might be change color species to toner if use color species for color matching. I believe it will receive a very good improvement.
2). The content of titanium effects on the strength of white injection molded parts Titanium is generally used for white plastic coloring. The more the titanium contents the whiter the injection plastic is, in the same time makes the injection plastic brittle.
Titanium is a metal powder, which is can’t be able to immiscible with plastics. It is equivalent of an impurity exists in plastic, destroying the structure of the plastic and the connection between the rubber and rubber. As a result, the strength of the plastic will falling as the content of titanium increased, the PVC pieces can be easily pulled and twist off just like the rubber, and the injection molded parts which has water flow lines position will decline more serious.
Therefore,in the case that can meet the requirements of color, the content of titanium in color masterbatch should be as little as possible.