【 Abog 】 Craft Tips | How to Improve Product Texture or Color Difference Issues

Many plastic products have colors that are not the natural color of the material, but are added to the material during injection moldingpastelOr oil or masterbatch, orraw materialThe color has already been prepared before granulation, but some products have strict appearance requirements, and there should be no color lines or color differences on the surface of the product. What should we do when we encounter this problem?

　　Solution 1

1. Increase the temperature of the barrel to make the material mix more evenly with the color inside the barrel

2. Increase the back pressure during material plasticization, because as the back pressure increases, the shear of the material will also increase, allowing the molten material to blend better with the color.

　　⚠️ That's right, both methods are effective, but there are also negative effects:

The polymer of the material is damaged to a certain extent, and the strength of plastic products will decrease.

2. Some materials are sensitive to thermal shear or temperature, and after half or a day of production, there may be discoloration or black spots.

3. Spray nozzle head casting. The issues of color lines and color differences have been resolved, but new problems have emerged!

　　Solution 2

1. A screw with mixing function, which has a structure similar to a pineapple head at the front end of the screw, allows molten material to be injected into itmoldStir thoroughly again before

2. Nozzles or nozzle heads with mixing function.

Whether using screws, nozzles, or nozzle heads with mixing functions, the material temperature can be restored to normal process conditions, thereby reducing damage to the raw materials and achieving a more stable process.