MOLD STEEL SELECTION GUIDEHow to choose mould steelThe choice of mould steel is of great importance if the mould is to function effectively.When plastic is molded, due to molecular stretching and shearing, residual stress is left in the product, which…
Runnerless MoldA runnerless or hot-runner mould system could be considered as an extension of the moulding machine injection unit.In this case,the polymer is kept molten right up to the cavity gate by means of additional heating elements controlled by thermocouples.The…
How to avoid contamination and waste in injection-molding shops?Keeping material cleanThe importance of cleanliness in the plastic mould injection shop is nowhere more apparent than making mouldings free from contamination. Safeguarding the material in the sack is an obvious matter,…
Most injection moulding organizations cannot go to the expense of having a complete reprocessing plant consisting of granulator, mixer/extruder, and die- face or lace cutter. The general arrangement is to have a room in a fairly remote corner of the…
Plastic materials move after getting heated up to the suitable temp (which can vary with every single materials). This kind of capability might be tested by evaluation, working with a melt index device per ASTM Test #D-1238.This capability to flow…
China Injection Mold CostMany buyers who purchase injection molds from China are solely focused on saving money.However, this isn’t the right attitude to take, since you’ll ultimately want a mold that works properly and is reliable, instead of just being…
Structure of Injection MoldA plastic mold is made from various parts, including plates, pins, bushings, pillars, ejectors, and many other pieces of equipment that serve a number of purposes.In Figure 1, the locations of the basic items that comprise the mold…
“Auxiliary Equipment” is considered any additional equipment required for assisting the primary equipment (molding machine) in producing the final production of the molded parts.It includes items such as granulators, mold temperature controllers, hopper loaders,…
Toolroom & Press Setup21 Plastic Mold Building and Setup Tips from Senior ToolmakersBuilding a reliable plastic mold that runs flash-free and holds cycle time requires strict shop-floor discipline across parting-line venting, dual-zone thermal control, clamp rigging, and preventative maintenance.Engineering Summary:…
Process Control16 Process Tips for Injection MoldingConsistent parts come from a consistent process. These 16 injection molding tips cover the variables that decide part quality: atmosphere, pressure, temperature, cooling, and troubleshooting discipline.Engineering Summary: Shop-Floor Injection Molding BenchmarksPost-Ejection Shrinkage Timing: Wait…
