Plastic injection moulding is the process of melting plastic pellets (thermosetting/ thermoplastic polymers) that once malleable enough, are injected at pressure into a mould cavity, which fills and solidifies to produce the final product.
An injection mold is easily the most expensive part of the project, and can dramatically increase costs for small part runs. The main factors that influence the cost of an injection mold are the size and intricacy of the part, the material used, and the number of parts being produced.
The plastic is then injection through a nozzle into a mould cavity where it cools and hardens to the configuration of the cavity. ... The mould tool is mounted on a moveable platen – when the part has solidified, the platen opens and the part is ejected out using ejector pins.
Disadvantages of injection moulding
· High tooling costs and long set up lead times. Up-front costs are high due to the design, testing, and tooling required.
· Part design restrictions.
· Small runs of parts can be costly.
6 Types Of Injection Molding Technology
· Thin Wall Molding.
· Gas-assisted Injection Molding
· Metal Injection Molding.
· Liquid Silicone Injection Molding.
· 3D Printing.
· Unique Material Formulations.
Types of moulding machines and product formed
· Injection moulding machine.
· Extrusion molding machine.
· Blow Molding Machine.
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