Decatur Plastic Products, Inc. — a custom injection molding company based in Indiana — is investing heavily in training as part of a $3,000,000 expansion of their facilities. A recent article in Plastic News details Decatur’s use of Routsis’s online training courses to allow employees to improve their skills. Decatur is also increasing employees’ pay […]
Author Archives
Routsis Training
NEW! Free Purging Cost Analysis App
Routsis Training has developed a new Purging Cost Analyzer app to help scientific injection molders compare the cost of different purging methods. This free tool serves as a companion to the purging strategies discussed in our Purging for Scientific Molders online training series. Automatically calculate costs associated with purging compound, machine downtime, labor, production resin, scrap & […]
Never Empty the Barrel
The only time you should empty the barrel of your machine is when you are preparing to remove the screw. Concern: When discussing purging with most injection molders, the first step they follow is to empty the barrel of material. This practice is much less common in both extrusion and blow molding, but for some reason […]
Excessive Injection with Multi-Cavity Molds
You should always transfer from injection to packing with all cavities short-shot. Question: Let’s say a mold is imbalanced, the injection speed is 4 IPS and the mold is filled to 95% full. The first cavities finish filling at one speed and the last cavity to fill would fill faster than the first cavities. Why […]
Improving the Strength of Ribbon
Increasing the rate of production is an easy way to increase the linear strength of an extrudate. Question: We are blending 3 different types of PE as well as adding rubber to produce a decorative ribbon. Should we also add a grade of PP to increase the product strength? My Response: Blending more materials would […]