Plastic manufacturing has gained a somewhat controversial reputation. Single-use plastics and inadequate waste management and infrastructure have caused environmental damage. However, the discussion frequently overlooks the fact that not all plastic use causes equal harm.

Industrial injection moulding, when done responsibly, can drive forward environmental solutions.

The question is how far we can push sustainability while still producing durable, functional products.

Read on to learn where the industry stands and what’s genuinely changing at manufacturers like BEC Group.

Working with Recycled Plastics

Recycled plastic is the first line of defence against waste, but not all plastics can be recycled equally.

PET from drinks bottles cleans and reprocesses fairly well, but mixed plastics from household bins present greater challenges. Contamination, degraded properties and colour limitations all affect usability. Each reprocessing cycle can shorten molecular chains, reducing strength.

Recycled content still works extremely well across many applications, though. Products that don’t require virgin materials – such as storage containers, garden furniture, non-structural components, and clothing – can incorporate high recycled content with great success.

Material Selection Beyond Recycling

Bio-based plastics from renewable sources like corn starch or sugar cane offer alternatives to the mainstream. These aren’t automatically superior and their environmental toll is often contested, but they do typically reduce fossil fuel dependency.

From another angle, lighter materials reduce environmental impact as less weight means lower transport energy. Over millions of units, industries have found that weight-related resource consumption adds up to a considerable degree.

And then, durability might be the most overlooked or “hidden” sustainability factor. A plastic component lasting 20 years beats a “biodegradable” alternative that fails after two.

High-quality injection-moulded plastics excel at producing long-lasting products that require less frequent replacement.

Energy Efficiency in Manufacturing

The injection moulding process consumes substantial energy. Melting plastic, maintaining temperatures, and keeping systems online accumulate quickly. Modern machinery has improved significantly, however.

Modern electric injection moulding machines use considerably less energy compared to older hydraulic models. They’re quieter and more precise too.

From there, process improvements can make tangible differences:

  • Reduced cycle times – producing more parts with the same energy input
  • Better temperature control – preventing wasted heat
  • Efficient plant layouts – minimising material handling
  • Energy monitoring – tracking consumption per part for measurable improvements

We’ve invested in energy-efficient machines and solar panels at BEC Group and continue seeking opportunities to reduce waste.

Reducing Waste in Production

Every injection moulder generates some scrap. Runners, sprues, rejected parts – it’s inherent to the process.

Production scrap should be reground immediately and fed back into production, albeit diligently and only for appropriate products. Closing the loop minimises waste leaving the facility.

Additionally, optimising mould design and quality control also prevents waste by identifying those all-important opportunities to optimise processes – something that can vary quite surprisingly from project to project.

Moving Forward

Making plastic moulding more sustainable involves dozens of smaller improvements across materials, processes, waste management and equipment. It requires honesty about what works and what doesn’t rather than greenwashing.

Of course, plastic isn’t disappearing. It’s too useful, confers too many advantages to certain products, and is too strongly embedded in modern manufacturing. But how we use it, what we make it from, and what happens afterwards remain vital to sustainability.

If you’re developing products and want to discuss sustainable material options or ways to reduce environmental impact without compromising performance, contact us. We’re always happy to discuss what’s achievable for your project.