The U.S. is one of the few countries in the world still designing and building molds to inch standards when the global standard for measurement is metric. By using the inch standard our industry is out of sync with the rest of the world (except Liberia and Burma). This became clear early on in my [...]
For years we have been hearing about the virtues of aluminum molds for injection parts, and First-rate mold company’s Mold Builders has built its fair share—mostly for special-purpose applications that did not require many actions. For smaller molds using specialty aluminum has its benefits; and, if cycle times are critical, you can justify the high [...]
when the temperature is between vitrification temperature and viscous flow temperature, the polymer shall be under highly-elastic state, […]
but when the temperature is below the vitrification temperature, the polymer is under glassy state, which is hard solid, wherein energy from the molecular thermodynamic movement is low, […]
I want to tell you something about condition for injection and molding, the large molecular structure of polymer and the features of molecular thermodynamic movement have determined that polymer has such states of aggregation as the glassy state, highly-elastic as well as viscous flow state etc. […]
the hot and cold medium channel of molds is usually in hole or slot form, […]
In the injection molding world, everybody has an opinion about how molds should be gated – how many should be used; where should they be located; and, what size and shape should they be? Much of what is actually implemented into mold designs comes from experience, whether it is from the moldmaker, molder or material [...]
“How can we mold more parts on the same equipment in less time and lower our costs?” is a standard question whose common answers include reduce cycle time and/or improve mold yield efficiency. Surface treatments have been part of this solution and in the last 10 years a new family of coatings—DLC (diamond like carbon)—has [...]
When we talk about the moldmaking industry, we’re addressing a very large spectrum of applications. The high-volume automotive market aside, we can examine the lower-volume, highly precise molds for medical components, molds for the food and beverage industry, cosmetics and more. […]
Consider machine tool capability, intended milling techniques, programming, workholding and toolholding during your cutting tool selection process. […]