Leather finishing with Gemata30 November 2004
Gemata were founded in 1972 in Trissino and have grown to become world leaders in the manufacture of leather finishing machines. After Gemata's acquisition of Rollmac last year, the company expanded the existing plant. Rollmac manufacture rollercoating machines for synthetic leather, bonded leather, as well as other materials. There are further operating facilities in São Leopoldo, Brazil, and in Santa Croce sull'Arno, which has a spare parts warehouse and specialised technicians to assist customers in central and southern Italy. Besides leather finishing machines, synthetic leather and textile machines, both units produce foaming machines that create chemicals and air emulsions with viscosities varying from 200 to 950 g/l suitable for use in tanneries. The Brazilian facility produces complete finishing lines and technical assistance is offered across South America. Since 2001, after acquiring the FBP brand name, Gemata also produce tannery machines: conveyor belts, sorting machines and stacking machines to pile the leather after any kind of finishing process. The product that has made Gemata a worldwide leader is the roller coating machine, a working system that allows the application of any kind of chemical product on the leather, steadily and evenly, and with no waste of chemicals in the environment. Finishing with a Gemata machine, saves a huge amount of chemical product compared with the traditional spray finishing, implying cost savings as well as a reduced environmental impact. Gemata presented the new Jumbostar-SR and Stardrum at Tanning Tech. Jumbostar-SR can operate both in synchro and reverse and is now available in two working widths; 3,400mm and a new 3,000mm one, ideal for those tanners who produce medium size hides. The traditional control panel has now been replaced with a more functional and practical touch screen terminal which guides the user on how to operate the machine. It also features a sophisticated auto-diagnosis system to detect possible faults. Jumbostar SR also improves stucco application. The increased speed of the engraved roller and the automatic positioning of the belt for stucco finishing simplify this important process and make it economically favourable. The use of these patented stucco rollers, developed exclusively in the Gemata laboratory, improves the quality of the leather to be buffed, and also of the full grain. Gemata offer a 'kit' comprising all the necessary parts for use with the stucco system, which can also be supplied to the owners of the old Jumbostar models, on request. Jumbostar-SR also allows the application of oils and waxes, thanks to a diathermic oil roller heating system supplied upon customer's request. The working temperature can be achieved by a plc controlled programmed automatic start. In addition there is an improvement in the leather introduction and spreading system with belts (spreader) and in the belt linking system (puller). The new Stardrum milling drum, 3.0 x 2.0m, features a robust structure as well as highly efficient dust filtering plants and chemical products spraying. The range comes complete with a selection of accessories on request, such as tanks for chemicals, and conveyor belts for the automatic unloading of the hides. The specific quality of the leather finished with Stardrum is achieved through the thermo-dynamic study of the process carried out by Gemata which has led to software capable of controlling the temperature and humidity according to a predefined temporary trend. The quality and high technology of the materials used allows a precise and repeatable selection of the working parameters.