WITTMANN HOLZVERARBEITUNGS GMBH

The processing of granules into coated long products requires high precision with tools and machine settings as well as sound expertise in the specific characteristics of the materials. As an extrusion specialist of steel cables and other long products such as wires, glass-fibre rods, we offer a wide service range: Plastic coating from ca. 0.5 to 24mm, PA, PE, PP, PUR and PVC and more, additives for special requirements, such as the UV and water resistance, circular cross sections and special dimensions and stock colours or your own selection.

In the field of plastics we offer metal strips with PVC plastisol and/or organosol coatings, as well as polyamide plastics. PP (polypropylene), PE (polyethylene), PC (polycarbonate), PET (polyethylene terephthalate) and PLA (polyactide), TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane) and others. These can be produced with a layer thickness of 5-200 μm Depending on the plastic, higher layer thicknesses can also be achieved. In addition, most plastics can also be equipped with antibacterial properties; of course in all colour variations. Although a one-sided coating more common, we are able to apply the same and/or different plastic adhesives for both sides.

Rubber-to-metal bonding Our adhesive build-up provides strong bonding between our metal carrier and your rubber. With our know-how, we are able to bond a wide variety of compounds such as NBR, CR, EPDM, SBR etc. for you. Plastic-to-metal bonding Whether PC (polycarbonate), PVC (polyvinyl chloride), ABS (acrylonitrile-butadiene-styrene), CAB (cellulose acetobutryate), PP (polypropylene), TPU (thermoplastic polyurethane), PA (polyamide) and polyolefinic plastics or other thermoplastics as well as duroplastics - we ensure that you achieve optimum adhesion between the plastic and our metal carrier.

Our rubber-coated metal strips are used in numerous applications, such as engine and aggregate seals. In addition to NBR, we also coat metal strip with EPDM, NR, HNBR and FPM in thicknesses of 10 μm - 2 mm. The metal strips can also be coated with an anti-friction coating, which offers extremely high resistance to heat and special sliding ability. The resulting further processing quality enables them to be used wherever parts made of metal strip with sealing, sound-absorbing or vibration-damping properties are required. The very good bonding between elastomer and metal, combined with outstanding deep-drawing properties, shows the superiority of this coating. The metal strips can also be top-coated with decorative lacquers on both the metal and the rubber coated side (e.g. as a distinguishing feature in the company's own production for top and bottom sides).