Common problems during the transparent plastic injection molding Due to the high light transmittance demand of transparent plastic parts, the surface quality of plastic products should be very high, and there must be no markings, whitening,fog, black spots, discoloration, poor…
plastic mold venting Before injection molding, there is a large amount of air in the flow path and the cavity. When the melt enters the cavity quickly, it is necessary to discharge the air quickly. In addition, when the melt…
9 Tips to Make the Mold Buying Process Easier It can be complicated to buy an injection mold, as there will likely be a lot of back and forth between buyer and contract molder before the final product is settled on.…
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…
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