DiloGroup @ India ITME: Improving needlefelt ...
DiloGroup @ India ITME

Improving needlefelt production technologies

 (Source: Dilo)
(Source: Dilo)

The textile machine building plays an important role in offering solutions for fiber pulp recycling and reduction of energy, water and ancillaries. New developments aimed at improving production technologies with a focus on needlefelts will be the focus of DiloGroup at the India ITME 2022 in Noida/India, from December 8-13, 2022.
Needling per se is a mechanical production method with a high energy efficiency. For this reason, the development efforts of DiloGroup, Eberbach/Germany, consisting of DiloTemafa, DiloSpinnbau and DiloMachines, aim at producing nonwovens by “intense needling” instead of water entangling, even for light nonwovens made of fine fibers for the medical and hygiene sector with an area weight of 30-100 g/m². This would result in a reduction of the environmentally relevant production costs; per annum to about 1/3 to 1/5 of current.
Despite the prospective advantages of the mechanical intense needling method over the hydrodynamical, water entanglement is at the moment the most important production method for low area weights and highest production capacity and is also offered by the DiloGroup as general contractor in cooperation with partner companies.

Fiber pulp recycling
Fibrous material in nonwovens and particularly used clothes can be successfully recycled if staple length can be conserved in the tearing process. In the classic tearing process, staple lengths are dramatically reduced and therefore these fibers can only be used as base material for inferior uses in thermal or acoustic insulation or in protective textiles, transportation or protective covers etc.
When recycling textile waste in the context of the collection of used clothes, the so-called “filament-saving” tearing using special tearing machines and methods must be used to produce fibers with longer staple lengths which can be fed to a nonwovens installation. Hence product characteristics can be better specified and controlled.
The additive production method of the 3D-Lofter is especially suited for automotive parts with differently distributed masses. However, there may also be potential for increasing uses in the sector of apparel and shoe production.

3D-Lofter (source: Dilo)
3D-Lofter (source: Dilo)
In the field of card feeding, the IsoFeed method offers great potential for a more homogeneous card feeding at the same time reducing the variation in cross-machine fiber mass distribution and thus the fiber consumption while conserving the end product quality.
DiloGroup will showcase the above-mentioned developments of needling technology as well as modules of Industry 4.0 applications for further digitalization during the India ITME exhibition. The company will also provide information about the numerous universal and special applications for the complete nonwovens technology.

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