Nowadays, plastic injection molding is mostly performed in one of two ways: hot runner systems or cold runner systems. If you’ve worked with plastic injection molding before, you’re likely familiar with hot runner systems. However, you may not be familiar with how they operate or differ from cold runner injection molding systems. As a process that increases the cycle speed and decreases waste in plastic injection molding, it’s a very attractive means of creating high-quality plastic parts. To truly appreciate its diversity and efficiency, let’s discuss how hot runner systems operate in plastic injection molding.
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Plastic injection molding is a great choice for manufacturing parts. However, contains some concepts and mechanics that prospective users should understand when it comes to the designing and building of molds. Molds have many parts and options for parts, and it’s important to understand how the various options contribute to the performance, cost, and complexity of a mold. In this article we look at the runner systems found in injection tools and how selecting hot or cold runners will impact the final product. 
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