At a leading injection moulding company, you’d expect a wide range of machines. P&R has over 60 presses from 50t to over 900t, providing a flexible service to all its customers.

In this short video, our Production Manager, Danny Cashin, explains the benefits of a modern injection moulding facility.

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Plastic Moulding Materials

P & R uses in excess of 25 polymer raw materials in its production. We have at least 60 mould presses in operation at any one time which means material supply is key to the efficiency of our processes.

To optimise this, a sophisticated material handling system feeds each machine with the correct formulation blown direct from silos. The silos are connected to monitoring systems which allow the team to assess stock levels and arrange deliveries accordingly.

These handling systems mean raw materials are not found on the factory floor. This reduces the hazard of split bags, increases production floor space and improves safety and efficiencies all round.

P&R processes a multitude of raw materials but the most common fall into the following groups:

PBT- Polybutylene Terephthalate

Resistant to solvents, mechanically strong and heat-resistant up to 150C, this plastic is perfect for electrical casing and automotive construction. You’ll also find it in your toothbrush and swimwear.

PET – Polyethylene Terephthalate

Also known as polyester this polymer is used to form containers for liquids and foods, and thermoforming for manufacturing.

HIPS – Hi Impact Polystyrene

Good impact resistance, dimensional stability and low cost make this a popular material for casings and packaging.

PP – Polypropylene

Resistant to fatigue, polypropylene is widely used to make ‘living hinges’ such as those seen on a Tic Tac box. Laboratory equipment, automotive components and reusable containers are also made from this plastic.

PC – Polycarbonate

A strong, tough material that’s easily worked, moulded and thermoformed. Most commonly used for electrical components, construction materials, data storage, automotive components, medical applications and phones.

PA – Nylon

Often used as replacements for metal parts in car engines, Nylon moulds are tough, corrosion resistant, lighter and cheaper than aluminium and offer optimised air flow.

ABS – Acrylonitrile Butadiene Styrene

A lightweight thermoplastic polymer with good shock absorbing qualities that’s often used in pipe systems, musical instruments, golf club heads, automotive trim components, medical devices and protective headgear.

For more in depth information on materials you may find the following link helpful: www.matweb.com

Downloads:

PDF of all materials utilised here at P&R