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Plastic is a much-discussed material. We know that high-performance polymers can make a contribution to the protection of resources and to the environment, and have made this the focus of our corporate activities.
We look at plastics in three phases: during their production, in use and at the end of the product's life. On this page, we show you our answers to the question of sustainability, both in terms of our products and in everyday life at igus. Not everything has been answered yet, and for some things, especially with regard to sustainable production, we are still working on answers and solutions.
Still to be solved:
Goals:
In 2021, we achieved 31.2% less CO2 emissions than in 2020. This figure relates to Scope 1 and Scope 2 emissions. The switch to green electricity in mid-2021 and to climate-neutral gas in October 2021 will play a key role here.
We are working hard not only to measure and make transparent the CO2 footprint of every component we sell, but also to consistently reduce it. As a first step, we show the CO2 footprint of each plain bearing of our best-selling materials in our web shop.
The first energy chain made of 100% recycled energy chain material. Based on the igus chainge recycling program, the new E2.1 (micro) catalogue range was created from 100% recycled material - of course tested in the igus laboratory.
The new, sustainable iglidur ECO materials ECO H, ECO P, ECO A180 and ECO G consist of 100% regranulates of the top materials that have proven themselves for many years. They are tested just like all other materials and are suitable for many applications.
Linear housings made of 100% recycled igus polymer P4 and liners made of iglidur J4 with high recycling material content. The split linear housings also enable fast bearing replacement directly on the round shaft.
The production of 1 m³ of plastic requires around 50% less energy than that of 1 m³ of steel or aluminium.
The production of high-performance plastics accounts for just 0.5% of global oil consumption.
All of the electricity we purchase is green, and we are reducing the amount of power our machinery and equipment consume. We are acquiring injection moulding machines that are 40% more energy efficient and replacing old ones. We reduced power consumption by 11% in 2021 even as we increased production hours.
99% of our rejects in injection-moulding production (sprues, defective parts) are recycled and returned to the manufacturing process.
Mechanical measures such as magnetic foils and guide plates prevent parts from falling out of the machines in the production process and becoming waste. We reduced our waste ratio (production waste + processed material) by 21% in 2021 thanks to these and other measures.
In order to make our environmental policy transparent and comprehensible, we have been certified according to ISO standard 14001 since 2019, a recognised basis for environmental management systems. This helps us on our way towards a CO2-neutral factory.
27 million tonnes of grease pollute the worldwide environment every year. Our polymers do not require lubrication.
50% of all lubricants sold worldwide end up in the environment. (Source: M. P. Schneider, 2006)
1 litre of oil contaminates 1,000,000 litres of drinking water. (Source: Saskatchewan Association for Resource Recovery Corp., 2008)
1/3 of the total fuel consumption of a passenger car is used to overcome friction in the engine, gearbox, tyres and brakes. (Source: K. Holmberg, P. Andersson, A. Erdemir, 2012)
Global demand for lubricants will increase by 2 % annually, according to forecasts = 45.4 million tonnes in 2019. (Source: The Freedonia Group, 2015)
Our polymers are optimised for wear. They do not corrode and do not get dirty from grease and dirt. They last longer and don't have to be replaced often. Thanks to our numerous tests in the test laboratory, we can calculate their service life exactly.
Plastic is lighter than steel and saves weight and therefore energy, which has to be applied for the movement. In an aeroplane, this amounts to roughly 4kg if iglidur plain bearings are used instead of metal-rolled bearings. This again positively impacts kerosene consumption.
Our polymers are tribologically optimised and have low friction. Together with the lower weight, this ensures that less drive energy has to be used to move a machine part in an application.
Components are not replaced until they have reached the end of their product life cycle - this is the idea behind our smart plastics product range. Sensors indicate wear and parts are replaced when really necessary; resources are used carefully and rationally.
Not having to replace the entire application when wear occurs was one of the leading ideas when we developed our exchange bearings for linear guides. The rail is not damaged and the bearing housing can be reused. This conserves resources - and simultaneously results in lower costs.
With iglidur N54, we have developed a standard plain bearing that can be used universally and consists to 54% of renewable raw materials. The biopolymer bearing demonstrates that components can be sustainable, and motivates us in our future product development.
We launched our "chainge" energy chain recycling programme in 2019. You can send us used energy chains (from igus or other manufacturers). You receive a voucher, and we separate components by type and use them ourselves or supply them to recycling partners. As of 12/2021, we have already received 25.97 tons of material.
We have invested five million euros in Mura Technologie, a company that uses a new technology, HydroPRS (Hydro Plastic Recycling Solution), to convert unsorted plastic waste to crude oil within 20 minutes. Conserves resources with pressure, temperature, and water. Construction of the first large-scale plant started in April 2021, and more and more companies are cooperating with Mura Technology.
It started as a Christmas gift for customers, and now there are several campaigns, not only in Germany, but also in Turkey and India, for example: we plant tens of thousands of trees every year. By creating large new areas of trees, we aim to help reduce CO2 pollution in the atmosphere.
What does igus do with electrical appliances after their service life has run out? Until recently, they went directly into waste disposal in large quantities: igus used to produce up to five tonnes of electronic waste every year. However, many devices are too valuable to be thrown away so we put an end to this procedure. The working group reguse, an association of igus trainees, saves everything from electronic waste that can still be used, e.g. laptops, PCs and monitors. They recondition the old devices and offer them to all igus employees at a small cost. The proceeds are donated to sustainable projects.
Produce replacement parts made of wear-resistant iglidur tribo-polymers yourself - this possibility is now also available to private individuals. In the context of the project "3D printing replacement parts for everyone", we support repair cafés, open workshops and FabLabs with filament donations. They can obtain up to two rolls of filament per enquiry completely free of charge. More information about the project, which we are initially offering in German-speaking countries, is available on our information page.
In order for our extruders, which are needed for the production of bar stock, to function properly, they need cooling. For this purpose, cold water is passed through the machine. It heats up and there comes the crux of the matter - until now, clean water has been discharged directly back into the sewage system.
We now want to change this and are therefore building our own re-cooling plant. After passing through the machine, the water is then cooled down again in a cooling tower, stored and can be used again to cool the machine. We are already using it for our injection-moulding machines, and now an additional re-cooling system will also reduce the extruders' water consumption by more than half.
At the igus office in the sunshine country Spain, 29 solar panels have been installed on the roof. The electricity they generate covers one-third of the entire power requirement.
We have started a task force that works on projects dealing with environmental protection in our company.
