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Arburg Develops Innovative Paper Injection Molding

At Fakuma 2024, Arburg is set to demonstrate a groundbreaking advancement in sustainable manufacturing: the processing of "paper pearls" on standard Allrounder machines. This innovative injection moulding process, developed in collaboration with paper and cardboard packaging manufacturer Model, opens up new possibilities for paper fiber-based products across various industries


The Technology

The star of Arburg's exhibit is the electric Allrounder 370 A, which will produce positioning tools for furniture connectors using paper pearls instead of conventional plastic granules

This technology combines traditional paper manufacturing with cutting-edge injection molding, significantly expanding the range of sustainable and environmentally friendly products

Paper pearls contain over 50% fibre content, consisting of primary or secondary paper fibers mixed with bio-based and biodegradable plastic

This composition eliminates the need for petroleum-based plastics, making the end products compostable and environmentally friendly


Production Process

The production cell at Fakuma 2024 will feature an energy-efficient Allrounder 370 A Comfort machine with a clamping force of 600 kN. The machine utilizes the Gestica control system, which includes several assistance functions for optimal performance:

  1. aXw Control EnergyAssist for energy-efficient production

  2. aXw Control RecyclatePilot for stable shot weight

  3. aXw Control PressurePilot for bionically optimized pressure control

The exhibit will produce Slot Lock positioning tools using a 2-cavity mold from Lercher, with a cycle time of approximately 60 seconds. A Multilift Select 8 linear robotic system will handle part removal and placement.


Sustainability and Applications

The paper injection molding process offers numerous advantages:

  • Sustainable alternative to petroleum-based plastics

  • Compostable end products

  • Minimum wall thickness of 3 mm due to high fiber content

  • Applicable in furniture, cosmetics, household goods, and toy industries


Image: Arburg


Arburg's paper injection molding technology represents a significant step towards more sustainable manufacturing practices in the plastics industry. By combining the versatility of injection molding with the eco-friendly properties of paper, this innovation addresses growing concerns about plastic waste and environmental impact.


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