Holding pressure, also called packing pressure, is a key phase of injection molding. It comes right after the cavity fills. The screw keeps pushing melt into the mold at lower pressure. This extra plastic compensates for shrinkage as the part…
The function of the mold feed system is to make the high temperature melt under high pressure go into the mold cavity to fulfill that. The style and quantity of gate and feed style often determine the specifications of plastic mold…
In the injection molding, short-filling, trapped air burns, high internal stress, flow marks and weld lines and so on could be often seen. To solve those problems, the first consideration is the process setting, and the gate design also plays…
Mould Finish Mould Finishing-Nearly all cavity and punch forms require a Finish to be applied to them. This may be a Polished finish, a photo-etched finish or a plated finish. However, for some technical Components the surface finish is not…
Introduction Quick Answer A PET preform mould is a precision injection tool that shapes molten PET into threaded, test-tube-shaped preforms — the intermediate step before stretch-blow molding turns them into bottles. Cavity count (4–144) sets output per cycle, steel grade…
Warpage is the most common dimensional complaint in injection molding. The part leaves the mold looking right and bends later, or it comes out bent on every shot. Either way, the cause is uneven shrinkage. One region of the part…
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For many plastic molding companies, how to dry material is an inevitable problem and engineering plastics especially need drying. The drying purpose is to make good quality products. The main problem caused by the change in the performance of the…
Injection Molding DFM Guide DFM for Injection Molding Design: 9 Rules + Cost Table (2026) A field guide for design and sourcing engineers who want their first tool to run — not get welded shut and re-cut. Most plastic parts…
Polycarbonate(PC) injection moulded product owns excellent performance, high transparency,good impact resistance and creep resistance, wide temperature window. Adversely, some other PC injection moulded product features are: As a mold manufacturer china,We need keep in mind these characteristics,: To increase the melt flow,…
