Historically, hot runner systems can be complicated to understand, design and use. They are also among the most expensive components in moldmaking. For both of these reasons and more, some mold makers invited several suppliers of hot runner systems and components to participate in a special roundtable discussion. […]
Valve gate hot runner technology produces better-quality plastic parts and faster cycle times by offering the most accurate gate control available. Valve gate systems are also an essential tool for automated injection molding because they enable faster mold start-ups, a wider processing window, and clean gates with no stringing or drooling of melt. [...]
steven, president, at first-rate mold company points out that moldmaking, which has been a more or less national business, has become a global marketplace that puts a lot more pressure on leadtimes, pricing and the need for technology innovation. “Ten years ago ‘lean manufacturing’ and Six Sigma’ were terms hardly used in our industry, now [...]
The cycle time of any mold is largely influenced by the cooling cycle—how fast the resin can be sufficiently cooled so that the part can be ejected without permanent deformation. In any given mold, the areas that take longest to cool are those with the thickest wall section. […]
A quality hot runner system is one of the more important enhancements you can incorporate into a mold to improve molded part quality, reduce production times and remain price competitive. […]