Analysis of new technology in injection mold manufacturing


Increasingly, the problem of corrosion and wear caused […]

Increasingly, the problem of corrosion and wear caused by the filler on the mold is increasingly prominent. Adding coatings to the mold, such as Nicklon (a nickel-PTFE coating) and Nibore (nickel boron nitride), provides excellent protection. At the same time, these coatings are very cheap compared to expensive plastic lubricant additives.
  Use Ritemp to get the right temperature
  Ritemp's mold cooling technology was introduced in 2005 by Ritemp, Australia (a division of Comtec IPE, an Australian processing and auxiliary equipment supplier). The technology is currently exclusively represented by SWM & Associates in North America.
  With Ritemp mold cooling technology, higher cooling efficiencies and shorter molding cycles can be achieved. For example, a 15g electrical enclosure is injection molded, using GE Plastics' Noryl PA/PPE, the mold is 2 chambers, and the molding cycle is 18s. With Ritemp cooling technology, a 4-cavity mold can be used and the molding cycle can be reduced to 13 s, resulting in an annual production of over 7 million. SWM & Associates believes that if downstream equipment can handle more products, the molding cycle can be shortened to 10s.
  Ritemp works as follows: Ritemp uses a sink instead of a water gun to cool the mold surface. By removing the vacuum caused by the air, the water can boil at a low temperature in the cooling chamber. The water evaporates to the surface of the mold for heat exchange and is then discharged through the water tank. During the evaporation process, the water molecules absorb the heat and regulate the heat level through the mold temperature control system, thus ensuring the mold temperature.
  Eliminate visible gate marks with submerged gate inserts
  This submerged gate insert comes from the i-mold company in Germany, where the injection point is designed at the end of the product and the flow path is open from the front end, so that the gate surface is positioned inconspicuous on the product. For example, in the side gates at the bottom of the ribs on the outside of the product, people cannot see obvious gate marks.