Table of Contents
What is injection Moulding?
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 is injection molding used?
Injection Moulding (or Molding to use the US spelling), along with extrusion ranks as one of the prime processes for producing plastics articles. It is a fast process and is used to produce large numbers of identical items from high precision engineering components to disposable consumer goods.
What products use injection Moulding?
Plastic bowls, plates, cups and eating utensils are generally injection moulded to create precise and durable kitchen equipment. Silicon spatulas, spoons and whisks are also injection moulded to create robust and heat-resistant cooking utensils.
What are the types of moulding?
Types
- Casting, the oldest term, covering a wide range of materials, especially metals.
- Blow molding.
- Powder metallurgy plus sintering.
- Compression molding.
- Extrusion molding.
- Injection molding.
- Laminating. Reaction injection molding.
- Matrix molding.
What plastic is used in injection Moulding?
The two most common types of this plastic are high-density polyethylene (HDPE) and low-density polyethylene (LDPE). The advantages of polyethylene are high levels of ductility, tensile strength, impact resistance, resistance to moisture absorption, and recyclability.
What type of materials are used in injection molding?
Injection molding is a manufacturing process in which parts are produced by injecting material in liquid form into a mold. It is most commonly performed with thermoplastic polymers , but can be used with a variety of other materials to include metals and glass.
What products are made from injection moulding?
Everyday Items Made By Injection Molding Bumpers and Dashboards. Whether it’s the lid on a water bottle, a plastic cup lid, or the lid of a prescription drug container, they’re all made from plastic injection molds. DVDs and CDRs. Electrical switches can be produced on a mass scale when made with injection molding systems.
What are the stages of injection molding?
Plastic injection molding processes consist of four main stages: filling, packing, cooling and stripping. The four stages determine the quality of the injection molded parts, and the four stages are a complete and continuous process.
What are the disadvantages of injection moulding?
The Disadvantages of Metal Injection Molding (MIM) As with all manufacturing processes, MIM also has its own set of disadvantages. Some of these disadvantages include: The MIM process has multiple steps, which leads to a more expensive processing cost. The parts manufactured using this process are typically small.