Injection moulding is a complex system of machinery, fluid dynamics, and thermal conductivity. Let’s break the mould down into two simple parts, the heat exchanger and the pressure vessel, and review how they can impact overall part quality and dimensions.
Falling weight impact tests can yield much more relevant information than single-point impact testing; however, they come with their own challenges.
Cracking of plastics components under impact was a major blow to the plastics industry in the early days. Today it is still a challenge for designers to select thermoplastics that will stand up to impact under service conditions.
Injection moulding is one of the most commonly used methods of producing identical plastic products in high volumes. However, as with every process, it is important to understand the specific design restrictions that must be adhered to in order to facilitate the obvious benefits of successfully producing cost-effective, high-quality parts.
From 3D Printing to CNC Machining, Vacuum Casting to Injection Moulding, the process options for plastic parts are limitless. Transitioning from prototyping to production can be a challenge, and it may be worth considering the long term requirements first.
Low-cost identification of plastics is certainly desirable, but identifying an unknown plastic material can be an expensive exercise if you submit it for full chemical analysis.
Moldflow software allows the flow of plastic inside a mould tool during the injection moulding process to be analysed. The 3D CAD data generated during the design process can be used directly to determine the manufacturability of the part.
3D CAD data is the gateway to exciting and transformative technologies such as simulation, 3d printing and CNC machining.
Brexit has shaken up businesses across the country, and many companies are using this as an opportunity to re-evaluate the way they are conducting their manufacturing.
Some say hot air dryers have limited application as they are only effective for drying surface moisture from non-hydroscopic materials such as Polypropylene or Polystyrene.
Most modern plastic processing companies will employ a preventative maintenance program. This will usually centre around the servicing of primary production equipment, conducted by skilled staff or the OEM service team.
Plunkett Associates’ experience takes us from low volume into hundreds of thousands, or put another way, container loads! We would be the first to acknowledge that we lack a track record of dealing in millions, a specialist area in its own right!
Welcome to the second edition of PlastikCity on tour! Our next stop was at Wellingborough based Renmar Plastics Machinery.
To assess solvent resistance, first consider solvents spread out on a polarity scale. Non-polar solvents are at one end, such as paraffin, petrol and diesel. At the other ‘highly polar’ end we find alcohols and water. In between are moderately polar solvents such as acetone, esters and chlorinated solvents.
Whilst many companies view low quantities as a nuisance, they represent our staple diet!
In 1839, by inserting sulphur atoms as bridges between polymer chains, Charles Goodyear transformed Natural Rubber from an interesting curiosity into a superb engineering material that has had a huge impact on society.
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