Plastic Injection Moulding Materials
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Product Development: Plastic Materials
Here at Moldwel, we are proud to offer expert advice and services when it comes to developing your product including:
- 3D Printing
- Advice on materials
- Tooling Insert systems
- Mould tool solutions
Here are some of the many thermoplastics that we work with here at Moldwel:
Acrylonitrile Butadiene Styrene (ABS)
Polyphenylene Sulphide (PPS)
Polybutylene Terephthalate (PBT)
Thermoplastic Elastomer (TPE)
Injection Moulding Material Advice
At Moldwel we can advise you on the best thermoplastic to use for your products.
What are Thermoplastics?
Thermoplastics are plastic materials, often known as polymers. They become pliable when heated and then solidify upon cooling. With this in mind, they are great for manufacturing components with, as they can be reshaped and remoulded when in their liquid form. In their raw form, thermoplastics are small pellets that can be mixed together with dyes and additives. These can change the colours and enhance the properties of the thermoplastic. Typically, thermoplastics are the go-to material to use when it comes to producing parts through the plastic injection moulding process.
Thermoplastics fall into two distinct categories: Commodity Polymers and Engineering Polymers. Both have different structures and properties – therefore, the choice is dependent on the end use of the product / component.
Commodity polymers are generally lower cost, off the shelf polymers where the mechanical properties of the material are not critical to the end use product performance. The material will still be of a good quality and will still have many specific attributes and benefits. Commodity polymers are generally used in plastic injection moulding for products that are mass produced and are often referred to as “throw-away” single use components, such as drinks bottle or disposable food trays for example.
Examples of widely used commodity polymers are :
- Polypropylene (PP)
- High Density Polyethylene (HDPE)
- Low Density Polyethylene (LDPE)
- Polyethylene (PE)
- Polystyrene (PS)
- Acrylonitrile Butadiene Styrene (ABS)
When a specific mechanical property is required, in challenging applications or environments engineering polymers, as opposed to commodity polymers would be used. Specific properties such as strength, metal replacement, chemical stability and lubrication are examples of where an engineering polymer would be selected. Often, due to the costs involved in manufacturing this higher spec of material means higher volumes are not used in engineering polymers and smaller volumes of manufacture are seen. Specific properties that can be used in Engineering Polymers include for example Flame Retardant, Glass Filled, Chemically Lubricated.
Examples of Engineering Polymers :
- Polyamide (PA – Nylon)
- Polyamide Glass Filled (PA 6 – PA66)
- Polycarbonate (PC)
- Polyoxymethylene (POM – Acetal)
- Polytetrafluoroethylene (PTFE)
- Polybutylene Terephthalate (PBT)
- Polyether Ether Ketone (PEEK)