Please read more about different process steps which we at helsa® execute on the spot and with which make up the essence of helsa® products: high quality, reliable, and convincing products.
Needling/ Non-woven technology
With the available non-woven technology it is possible to produce needled non-wovens out of viscose, polyester, polypropylene and other kinds of fibres with a weight per unit area of approx. 50 to 500 g/m² and with a thickness of approx. 1 – 5 mms. Special properties of non-woven can be achieved by adding bonding fibres, antistatic fibres or other special fibres. It is also possible to produce functional compound materials by needling fiber non-wovens to differendt kinds of base layers as for example woven fabrics, foam layers or webs of laid threads
Yard ware media produced by helsatech can be manufactured into almost any sizes. For this purpose there are available catting facilities for narrow rolls, jet cutting technologies or several technologies of die cutting.
At this laminating installation an adhesive coat is being produced by inflaming/melting a foam media which is afterwards used as an overall connection between two layers of media.
The production process take place by means of a knife folding machine. The target is to get a filter area for adsorption as large as possible and create optimum conditions of flowing through.
Side band glueing and edging/ pleat fixation
For side band glueing and edging the pleated filter elements are processed again. In order to manufacture the finished products a textile framing material is being overall fixed with melting glue. Length and width can be freely choosen by the customer.
Not only single elements can be produced but also special requirements for filters are possible to produce as for example compact filter cells (V-cell SorbexxÒ), adhesion of several single elements or fitting elements into metal or plastic frames with or without grip protective lattice.
With our impregnating facility it is possible to soak textile base material with several recipes, adjust them to a specific weight per unit area and dry it. Above all a large spectrum of weights per unit area and different qualities are representable for impregnated foams of polyurethane and non-wovens with activated carbon powder and granulate.
Especially for thinn materials we use a coating process with activated carbon for which some activated carbon particles are fixed overall either one sided or on both sides with mono layer onto a textile carrier material. The distances between the particles are adjustable.
Non-woven fabrics can be thermically consolidated with a part of bonding fibres and non-woven material or other area-measured material can be compressed or its surface can be smoothed.