What is a short shot short shot in injection molding refers to the phenomenon that the injection material does not fill the mold’s cavity, resulting in incomplete parts. It usually occurs in thin-walled areas or areas away from the gate.…
Table of Contents The structure of an injection mold Classification of injection mold: Difference: The main plastic mold system 1.Runner Main Runner Sub-runner Cold Slug 2.Temperature Control for cooling some facts: mold width vs diameter of cooling channel 3.Venting plastic…
The gate is a narrow intersection between the main runner and the mould cavity, and the intersection is also the shortest part on the whole mold. Its function is to make the molten plastic enter into the mould cavity quickly, which…
To understand the various designs of undercut mould, we must first understand the definition of what a moulded undercut really is. In its most simplistic form, an undercut can be described as any feature on the moulding which resists the…
How to choose mould steel The 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 causes…
Runnerless Mold A 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…
How to avoid contamination and waste in injection-molding shops? Keeping material clean The 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…
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…
China Injection Mold Cost Many 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…
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