A competitive global economy requires processors to consider every available option to reduce their costs. One popular approach is to convert to in-house coloring, the blending of natural resin with color concentrate at the injection molding machine. With this approach, the greatest cost savings can be realized by using the highest letdown ratio of color concentrate possible. However, to successfully realize this cost savings, good mixing performance int he barrel is essential. This study will show that a mixing screw provides bettermixing than a conventional screw and that a sleeve mixer non-return valve significantly improves mixing when it is used with either screw. Thus the improved productivity of in-house coloring can be realized by applying this technology.
展开▼
