Aside from performance advantages, injection moulding machines must also be easy to use. This guarantees Lotan’s team can stay on-track to meet their key performance indicators (KPIs) by controlling the equipment and keeping it running sustainably. That’s why SXIII range of injection moulding machines are equipped with Shibaura Machine’s user-friendly controller that connects to Lotan’s programmable logic controller (PLC) for simple, repeatable operations.

Further advantages include improved dry cycle times and the overall stability of the mould itself. Lotan has ordered several more Shibaura Machine IMMs from TM Robotics, specifically its newest SXIII range of injection moulding machines. The SXIII is an enhanced performance model that provides significantly faster injection speeds than traditional moulding equipment. As a result, the machine offers a 35% faster cycle time than conventional hydraulic servo IMMs. Lotan also achieved a lower cost-per-mould.

Although all-electric machines are initially more expensive with lower injection pressures, they are shown to outperform hydraulic versions in a variety of other ways. Advantages include higher rates and speeds of injection because the all-electric machining relies on toggle clamping rather than direct pressure clamping, which is better for high-speed injection moulding.

“This grant will fund a detailed study of mechanical performance and manufacturability of lattice-reinforced NFPP panels, including the development and validation of finite element simulation tools,” said Chris Oberste, president of WEAV3D and principal investigator for this award. “Our technology enhances the performance of NFPP materials, enabling these sustainable materials to be optimized for a range of applications within the vehicle.”

WEAV3D’s compression molding technology for natural fiber composites is a cost-competitive alternative to processes such as resin transfer molding and automated fiber placement.

According to the Journal of Clean Production, injection moulding may be responsible of up to 90% of the Global Warming Potential (GWP) created by the entire mould lifecycle, mainly caused by energy consumption.

More than 90% of the costs of injection moulding can be attributed to energy use. This mainly applies to the electricity used to power and operate the injection moulding machine. As a result, there has been some debate in industry about the cost and sustainability advantages of hydraulic injection moulding versus all-electric machines.

Although hydraulic injection moulding machines are less expensive initially, it’s important to consider the whole life cost when buying new machines. This was demonstrated by TM Robotics’ customer Lotan, a manufacturer of plastic containers based in Leicestershire, UK. All of the injection moulding machines in Lotan’s production facility are electric, rather than hydraulic.

This additional award follows a previous $1 million grant to fund the design, fabrication, and testing of a continuous composite forming line that uses ultrasonic welding to increase production throughput of WEAV3D’s patent-pending process. This next-generation system is being built according to automotive production speed and quality standards, with a target production capacity of 200,000 to 300,000 automotive door panel size parts per year and per machine.

Composite materials and processing innovator WEAV3D Inc. has been awarded a $200,000 Technology Enhancement for Commercial Partnerships (TECP) supplement to its 2021 National Science Foundation (NSF) Small Business Innovation Research (SBIR) Phase II grant. The new award focuses on the use of WEAV3D’s woven composite lattices to enhance the performance and sustainability of natural-fiber polypropylene (NFPP) composites for automotive applications.

All-electric moulding machines also have the edge when it comes to maintenance. With PLC controllability, injection moulding operations can be tie-into the production facilities Internet of Things (IoT) things systems. Data on the IMM’s performance can be collected through sensors and relaid to the plant’s enterprise resource planning (ERP) or manufacturing execution systems (MES) to support preventive maintenance, traceability and quality management.

The Journal of Clean Production’s findings are a wake-up call to manufacturers, particularly as demand for injection moulding processes continue to grow. For example, the market for injection moulded medical devices plastics is expected to see booming growth between 2023 and 2030.

Antolin, one of the largest international suppliers for automotive interiors and a leader in innovation and sustainability, is the commercial partner for the TECP award. “The use of WEAV3D reinforcements promises to reduce the weight of our NFPP components, which in turn reduces CO2 emissions and trims waste to improve the overall sustainability of these parts,” said Pablo Soto, materials specialist with Antolin’s Corporate Innovation Department. This supports Antolin’s sustainability commitments to reduce CO2 emissions by 75% and nonhazardous waste generation by 10% by 2028.

Germany’s Polyvlies, a supplier of nonwoven materials, is also participating in the project. The company’s Naroplast thermoplastic natural-fiber nonwoven textile-based composite targets automotive compression molding applications. “WEAV3D’s ability to tailor the tapes and woven patterns to the application provides an extremely flexible way to increase the strength and stiffness of the panels while improving design flexibility,” said Axel Hinrichs, CEO of Polyvlies USA. Polyvlies natural nonwoven composites have been used on a commercial basis by the likes of Mercedes Benz, Volkswagen, BMW, and Jaguar.

Injection moulding might presently be responsible of up to 90% of the processes GWP. However, the performance of all-electric IMMs like Shibaura Machine’s SXIII and EC-SX show this trend can be reversed, with positive effects on sustainability and also manufacturers’ bottom line.

Here, Dervish Ibrahim, international sales manager at TM Robotics, explains why all-electric injection moulding machines are the way forward for reducing the process’s environmental impact — while also helping manufacturers achieve a lower cost-per-part.

But, what about the energy efficiency of all-electric versions hydraulically-powered machines? By using Shibaura Machine’s all-electric IMMs, Lotan has experienced 20 to 40% lower running costs compared with older-fashioned hydraulic machine. Traditional hydraulic injection moulding machines are also less efficient because they consume energy even while idle, whereas all-electric injecting machines only use energy while in action.

Injection moulding is used to manufacture a huge variety of parts, and has several advantages. They include the ability to mould a wide variety of plastics, good repeatability, consistently high production with low waste and a low-cost-per-part — the latter is always a priority.

Maintaining a low cost-per-part throughout the manufacturing process is vital for reducing costs and delivering a higher product value — from both the manufacturer’s and the customer’s perspective. While injection moulding can support this, manufacturers are also concerned about the energy costs of injection moulding, and how this effects sustainability and the bottom line.

Stephen has been with PlasticsToday and its preceding publications Modern Plastics and Injection Molding since 1992, throughout this time based in the Asia Pacific region, including stints in Japan, Australia, and his current location Singapore. His current beat focuses on automotive. Stephen is an avid folding bicycle rider, often taking his bike on overseas business trips, and is a proud dachshund owner.

In another instance, another EC-SX model, the 1,800 ton EC1800SX-155B, was tested against a competing all-electric IMM. Although both machines had the same energy consumption, the Shibaura Machine IMM delivered a faster cycle time, which gave overall energy efficiency savings of 30%.

The grant from the National Science Foundation (NSF) will fund a study of the performance and manufacturability of lattice-reinforced natural-fiber polypropylene (PP) panels for automotive applications.

Indeed, Shibaura Machine’s all-electric IMMs have been found to yield energy savings of 60% compared with European hydraulic servo IMMs. Other performance tests by Shibaura Machine measured its EC650SX-61B IMM, with a clamping force of 650 tons, against a hydraulic servo machine. It delivered a 51% energy reduction.

The company relies on Shibaura Machine’s all-electric injection moulding machines (IMM) supplied by TM Robotics. The machine is manufactured in-house by Shibaura Machine, formerly known as Toshiba Machine. Performance benefits of the IMM include a range of clamping force from 50 to 2,500 tons, which can be calibrated by a digital direct screw transfer (DST) control for added production flexibility.

Injection moulding machines powered by a hydraulic motor can produce higher energy levels and higher injection pressures, and the initial cost of the machine is lower. But there are also disadvantages with hydraulic machines. They include the machine’s high consumption of electric energy, because its hydraulic power is connected to an electric power unit that works at maximum capacity during every phase of the moulding process.