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Warp Knitting/​Crochet

New Wefttronic II G machine from Karl Mayer

Flexible weft insertion warp knitting machine goes on show at ITMA 2023 in Milan next week.

2nd June 2023

Knitting Industry
 |  Obertshausen, Germany

Technical Textiles

For manufacturers of technical textiles, the Karl Mayer Group will be presenting a Wefttronic II G machine at ITMA in Milan next week, with new features and upgrades for even greater efficiency.

The weft insertion warp knitting machine produces lattice structures from high-strength polyester, which are firmly established in the construction industry in particular. With a working width of 213 inches, it offers unique productivity and further advantages through design innovations. New features include weft thread tension monitoring, management and the new Vario Weft laying system.

Karl Mayer’s Wefttronic II G machine. © Karl Mayer

The component for the weft insertion aims at maximum flexibility. It allows the patterning of the weft yarn to be changed quickly and easily electronically, without mechanical intervention during yarn insertion and without limits on repeat lengths. In addition, there is less waste, meaning that the Wefttronic II G also scores points in terms of sustainability and costs.

Weft yarn tension monitoring. © Karl Mayer

The Karl Mayer Group also supports its customers with well thought-out Care Solutions. The new support offers include retrofit packages for retrofitting control and drive technology for weft insertion and composite machines, and service packages that bundle various services. These include machine inspections and the replacement of all drive belts. The customer benefits from fixed prices that cover the costs of technician assignments, various discount options and transparent services.

Vertical greening

A completely new solution for the vertical greening of cities Is presented from the field of application for technical textiles. The core of the innovation is a grid textile produced on weft insertion warp knitting machines by Karl Mayer Technische Textilien GmbH. The knitted lattice fabric is made from flax and is used as a climbing aid for fast-growing plants, and after the greening phase, in autumn, it can be recycled together with the plants as biomass in pyrolysis plants to produce electricity and activated carbon.

In summer, the planted sails lower the ambient temperature through evaporation effects. In addition, photosynthesis creates fresh air and binds CO2. Other important advantages are low soil requirements and flexible placement in public spaces. The greening system was developed by the company Micro Climate Cultivation, OMC°C, with the support of Karl Mayer Technische Textilien.


The Karl Mayer Group will also be exhibiting a sustainable composite solution made from natural fibres. The reinforcing textile of the innovative lightweight material is a multiaxial non-crimp fabric, which was also produced from the bio-based raw material flax on a COP MAX 4 from Karl Mayer Technische Textilien.

COP MAX 4 from Karl Mayer Technische Textilien. © Karl Mayer

The boatbuilding specialist Greenboats uses natural fibre composites to achieve more sustainable products. The fact that it succeeds in this is shown, for example, by the Global Warming Potential (GWP): 0.48 kg of CO2 per kilogram of flax reinforcement compares with 2.9 kg of CO2 per kilogram of glass textile.

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