contact us

Contact us

Fill in the form below if you have questions of any kind!

For sales enquiries, please use our form here >>

Plastic injection moulding

For 75 years now, Rosti has proudly and successfully contract manufactured millions of useful products that touch people’s everyday life – ranging from the first cup of coffee to keeping our food and drinks stay fresh longer. Rosti produces products that help detect illnesses in time to find a cure, make our homes personalised and smart, and produce customer solutions that are reducing the CO2 emissions globally. Each and every one of the products is made with technical precision plastic injection moulding – and continuous improvement and innovation throughout time.


Precision plastic injection moulding simply explained

Simply described, plastic injection moulding is a process of melting plastic pellets and injecting it into a mould or cavity to form a shape. Once the shape is formed, the material is cooled, ejected from the machine and – voilà – a finished, functional, esthetically pleasing injection moulded product or part is ready!

Most products in our world today – items you see on your desk, in your home and at work (vacuum cleaners, espresso machines, speakers, health aids, electric tools, smart home devices, electric transport, cashless payment system, and virtual reality goggles) – are precision plastic injection moulded, and almost 90 % on everything produced in an automotive product is injection moulded.


The four main advantages of injection moulding

Rosti’s technical capability in precision plastic injection moulding, can, from one single process, and in one shot, create a product or part that is repeatable, accurate, cost effective, has a desired function, and correct surface finish.

Repeatability – the same shape can be produced in the millions

Accuracy – the manufactured product or part is not only repeatable, but can also be produced to a tight tolerance consistently

Functionality – it is possible to design a number of features into the injection moulded part including complex shapes that cannot be practically achieved by other materials or processes

Surface finish – with different injection mould processes coupled with specific tooling, a wide spectrum of surface finishes can be achieved, from high gloss to textured surfaces to simulated natural fibers

Cost and weight efficiency – When producing volume parts, the main cost is the tooling. Once invested, the actual production parts can be a fraction of the cost to produce versus other options. The weight of the part itself compared to traditional metal parts can also offer cost savings from functionality to lower logistic costs


Rosti locations worldwide

Rosti is strategically located with facilities in China, Germany, Malaysia, Poland, Romania, Sweden, Turkey, and the UK. 


Let's talk about plastic injection moulding!

  • Drop files here or
  • By sending us your contact information you confirm that you have read and understood our Privacy statement and you understand that we will collect, use and disclose of your personal information for purposes related to this enquiry. For further information on how we process personal data, contact information, how we ensure secure processing and your rights as a data subject, please visit our Privacy statement.
More information

Rosti moulding facts & figures

  • More than 400 injection moulding machines
  • Clamping force from 25T to 1500T
  • Hydraulic, hybrid and full electrical
  • Supported by robots or tailor made automation cells
  • Fast cycling from 2.5 seconds
  • Part weight from 0.3 g to kilos
  • High cavitations up to 72 cavities
  • Precision moulding down to 0.24 mm
  • Tolerances down to +/- 0.03 mm
  • Stack moulds with up to 64 cavities
  • Tools as small as 27 kg to more than 12T
  • More than 4000 customer tools and automations
  • BPA free zones