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Ontex Mayen is using a variety of Drylin linear bearings from Igus to provide the flexibility it requires on its nappy production lines. The bearings are designed to operate in rough and dirty conditions, working 24 hours a day, 365 days per year.


Leadscrew linear tables
The leadscrew linear tables SLW-2080-AWM guarantee synchronised height adjustment for pressing the packed nappies into boxes

Ontex Mayen is a European manufacturer of hygienic disposable products in the private label sector, offering a range of products for baby, feminine and adult hygiene. At one of its plants, 11 lines exclusively manufacture all sizes and variations of babies’ nappies.

As the nappy manufacturer serves many customers, line safety and flexibility must be guaranteed for production and packaging, and every order or size change-over results in set-up times or adjustments. On account of the high process speed of up to 600m/min, the lines are also subject to high dynamic loads.

Super-absorber and cellulose are used in the manufacturing process, which result in a relatively high level of dirt and dust. In addition, super-absorber behaves in a similar way to sand and contamination occurs through the effects of friction.

Drylin bearings from Igus play a key role here. Lubricant and maintenance free, insensitive to dust and dirt, corrosion-free, durable, quiet and lightweight, they are mainly responsible for positive adjustments such as in the adhesive application points. The adhesive application head must be moved reproducibly from A to B to C according to the respective product, a process that works reliably using linear guides.

The Easy Tube system is also used on the lines. This is a compact linear unit for light adjustment tasks with a simple, effective and robust set up. The outer anodised aluminium tube guides the carriage while protecting the trapezoidal threaded leadscrew and nut from external contamination. The slides, torque compensator and trapezoidal threaded nut are made from a high-performance polymer which is lubricant-free combined with a low friction value and very good wear properties.

Along with other components from the Drylin W modular system, RJUM linear plain bearings of different design sizes substitute ball bearing guides in a range of different components. They are based on highly wear-resistant polymers specially developed for linear technology, are
particularly tough, economical and are available ex stock within 24 hours.

Other special equipment for the nappy manufacturer includes a material handling crane which brings the heavy rolls of raw material to the machine. These overhead cranes are 2m high and move over large distances. Hybrid bearings modified from the Drylin W range, which offer a combination of sliding and rolling, have also proved themselves in this environment.

Key application benefits

  • Igus’s lubricant-free linear solutions guarantee the complete exclusion of contamination of the nappies during the whole process
  • Ontex Mayen praised the modular system, the extremely quick delivery times and straightforward sample service
  • The Drylin linear systems provide their performance ability in packaging, in optical control and in quality assurance.

Igus

Igus is the largest producer of reinforced plastic energy chains and injection-moulded polymer bearings. The range of polymer bearings includes Iglidur plain, Igubal spherical and Drylin linear bearings. They offer an excellent price-to-life relationship and are developed under the toughest conditions. They are oil, maintenance and lubrication free, low wear, resistant to dirt and dust, corrosion free and simple to fit. Igus also has the data to precisely predict the lifetime of these bearings within a specific application.

Igus is the largest producer of reinforced plastic energy chains and injection-moulded polymer bearings. The range of polymer bearings includes Iglidur plain, Igubal spherical and Drylin linear bearings. They offer an excellent price-to-life relationship and are developed under the toughest conditions. They are oil, maintenance and lubrication free, low wear, resistant to dirt and dust, corrosion free and simple to fit. Igus also has the data to precisely predict the lifetime of these bearings within a specific application.

Energy chains are the umbilical cord of modern machines. They minimise downtime and protect, support and extend the service life of cables and hoses. The broad range incorporates more than 30,000 innovative, low-cost products. From the smallest ‘micro’ chain to the largest chain in the world, the E4.350, Igus energy chains are capable of long and short travel distances at high speeds in all axes.

Igus also has its own cable series, Chainflex, specially designed with energy chains in mind. They are highly flexible cables, offering a long service life and very small bending radii. A wide range is available, from small signal cables to large power cables, high-speed data cables and glass fibre-optic cables.

The company’s energy chains and Chainlflex cables can be delivered as a fully harnessed and pre-assembled Readychain system, cutting purchasing, warehousing and installation costs.

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