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5W1H about Injection Molding

Author: Cheryl

Nov. 24, 2020

Machinery

What is Injection Moulding?

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.

Why are injection molds so expensive?

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.

How does injection Moulding machine work?

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.

plastic injection machine.jpg


What are the disadvantages of injection Moulding?

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.

What are the types of injection Moulding?

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.

What are the different types of Moulding machines?

Types of moulding machines and product formed

· Injection moulding machine.

· Extrusion molding machine. 

· Blow Molding Machine.


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