Needlepunching is one of the oldest and still most popular ways of stabilizing fiber layers. It was developed as a substitute for felting in the last century.
The basis is interlacing bundles of fibers with fiber layers generated by refocusing effect as a part of the fibers penetrated by needles with barbs. There is there is also a substantial reduction of the thickness of the fibrous layer, to significant refocusing of all threads and to reordering length and width of the body during needlepunching.
Fibrous layer is fed with an input device between two perforated grids. Openings in grates are penetrated by needle placed in the needle plate. Spines-needles capture a group of fiber layers, reorder perpendicular to the layer and stretch the layer. Layer is propelled by towing the cylinder bottom grid, called opera. In retrospect, the movement system ensures top needles, called wipers grid ejecting a needle from the fibrous layer.
The rate of fiber hardening layer is also connected with the number of injection per unit area of layers. The production of machine is a function of the number of needles in the needle plate and achievable frequency of needle system. And yet the force applied to each needle at the time of its passage layer can be quite high – to 10 N.
Struto® technology
Struto is a unique system for the production of nonwovens with vertical layed fibres, where in such a way of creating a fibrous layer has increased rapidly the resistance to compression and deformation and a high degree of recuperabling after stress. Elastic recovery of the technology is higher than when the PUR foams or the standard textilies with horizontaly layed fibres.
Struto technology also substantially improves the properties of nonwovens with regard to its filtering properties. The advantage of the production process is achieved by a large filter area, pressure drop and tenderness over other conventional materials. Struto structure is extremely coordinated and this occurs due to capture of particles even when the air freely go through the filter media. This has resulted in high tenderness and low pressure drop.
Main advantages:
- Improved functional properties - bulkiness, resistance to compression, good recuperation after stress, thermal insulating properties, soften ability
- Just use less fibrous material for obtaining comparable properties
- Possibility to process all types of fibers including recycled, both natural and synthetic materials
- Easy recycling and good hygienic quality of the product compared for example with PUR foam
- mattress
- noise isolation
- thermal insulation pads
- both wet and dry filtration
- geotextiles and data for natural areas
- furniture and upholstery industry - foam compensation
- variety of applications in transport equipment
- Weight of web: 8 g/m2 - 200 g/m2
- Weight of product: 100 g/m2 - 1600 g/m2
- All types of fibres
- Softness of fibers: 1 dtex - 100 dtex
- Thickness of product: 15 mm - 40 mm
- With or without a ground fabric base