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Efficient processing of solid silicone (HCR) on an electric Allrounder injection moulding machine

From 1 to 4 July 2024, Arburg will be presenting its extensive portfolio for elastomer processing at the German Rubber Conference DKT in Nuremberg, Germany. The exhibit at Arburg's stand 327 in hall 9 will produce bottle openers made of solid silicone (HCR, high consistency rubber) for demonstration purposes. For this, the electric machine will be equipped with a material feed in the new M size from partner company ACH Solution.

With its presence at the DKT in Nuremberg, the international industry meeting place Arburg has its sights firmly set on manufacturers of elastomer components as well as processors of rubber, HCR and liquid silicone (LSR). It sees great potential in fields such as the automation of silicone processing and multi-component technology, as well as e-mobility, fuel cells and medical technology.


Energy and production efficiency on an Allrounder 570 A

The energy- and production-efficient injection moulding of solid silicone (HCR) will be demonstrated by an electric Allrounder 570 A with a clamping force of 2,000 kN and a size 400 injection unit. The material processed will be Elastosil R plus 4001/70 from Wacker Chemie. Dosing system ACH Turnmix, now available in M and L versions along with the proven S size, provides constant and bubble-free feed at continuous pressure. This enables this production of silicone parts ranging from small to large shot volumes. The exhibit will be equipped with the new M size, which is particularly suitable for medium-sized injection units and HCR with a wide range of Shore hardnesses. The cavities of the 4-cavity mould will be injected directly via a cold runner system. This prevents burr formation and avoids the need for finishing work on the injection moulded parts. Four bottle openers at a time will be produced in a cycle time of around 60 seconds. As part of the silicone equipment package, the injection unit features a special screw geometry, cylinder temperature control and nozzle technology. The equipment, which is precisely adapted to the processing of solid silicones, transforms the Allrounder in conjunction with the ACH Turnmis into a compact and cost-effective injection moulding solution.


Pioneer in silicone processing

Arburg is a pioneer in the processing of liquid and solid silicones as well as multi-component injection moulding, and boasts an extensive portfolio of injection moulding machines and automation through to complete turnkey systems. The large selection of machine sizes, drive versions, equipment options, automation and peripheral equipment provides the perfect starting point for perfectly tailored solutions. A special feature is the 3D printing of liquid silicone components. For this, Arburg's range includes the LiQ from innovatiQ and the matching LAM (liquid additive manufacturing) process. With its expertise, Arburg also meets the needs of highly industrialised markets for digitalisation opportunities as well as minimisation of the carbon footprint.

Customers from the elastomer processing sector also benefit from Arburg's comprehensive consultation services, from procurement and technical equipment, process optimisation, mould tests and machine comparisons to training on cross-linkable moulding compounds in the Arburg Customer Center in Lossburg and in its subsidiaries worldwide.

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