Moulding

Injection moulding is the most common manufacturing process for producing plastic polymer parts. As this industry keeps evolving at a quick pace, it requires higher and higher production numbers with faster cycle times. GEFA has established itself as a leading name in the industry by being able to navigate the many challenges of the market, and delivering high end product to its clients.

We employ the latest production technology able to operate on a large scale both on single and bi-polymer components. These components find application in several markets thanks to their remarkable structural qualities. Flexibility, around the clock production cycles, and the knowledge to meet even the most challenging requests are what make GEFA a winner.obs

GEFA houses 18 injection moulding machines plus 5 ones built for bi-injection, equipped with Cartesian robots. We have all the toys necessary for injection moulding: efficient driers for proper polymers desiccation; thermo regulating water and oil lines cycled through the mold to maintain a constant temperature; designated electric devices tasked to regulate the temperature of injectors and hot chambers. GEFA also houses two gas assisted injection moulding machines, a process compatible with all the most common thermoplastic polymers. The whole operation is aided by MES software (Manufacturing Execution System), which allows us to monitor order status, production schedule and value flow for the entire supply chain.

The mold closes, clamping together the two halves of the injection mould. In this initial phase the chosen polymer is still in a grainy state and needs to undergo several desiccation processes before being declared ready for injection. Once the polymer is ready, the injection moulding process can commence:

• INJECTION. The melt is injected at a precise speed and pressure into the mold through carefully designed veins.

• UPKEEP. Once the mold is filled the machine works to maintain the right pressure to avoid the formation of air bubbles while the part takes shape.

• COOLING. The part is allowed to cool inside the mold for the amount of time needed for the material to harden.  During this step the machine is loaded for the next injection.

• EXTRACTION. In this final step the mold opens and the part is ejected. The mold then closes up again for the next cycle.

• High output volume

• Reduced production costs

• Complex components

• Metal replacement