The Paton Welding Journal, 2020, #10, 40-44 pages
Mechanized welding of laminated PVC fabrics with hot air
M.G. Korab, M.V. Iurzhenko, A.V. Vashchuk and M.G. Menzheres
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
Technical laminated fabrics, which are used for the manufacture of awnings and inflatable products for different purposes,
are made with double-sided PVC coating. The most widespread practical method of manual and mechanical
welding of laminated fabrics with PVC coating is hot air welding. In this work, the features of hot air welding of the
overlap welds of laminated PVC fabric were investigated in the manufactured experimental set up. The geometric
dimensions and shape of the produced experimental welds from laminated fabric Unisol 950 (specific weight of
950 g/m2) were established. In the course of the work, the mechanical strength of the welds produced by experimental
welding was investigated, as well as tear test of the welds was carried out. The range of welding speed was set, within
which welded joints of the laminated fabric are formed with tight penetration. It is shown that a tight penetration along
the entire plane of the welded joint is achieved by forming a bead of molten PVC, uniform as to its diameter, under the
pressure roller in the welding process. The nature of running of thermal processes in the welding zone was evaluated
by the geometric parameters of the melt bead. The optimal parameters of the process of producing the butt welds of
laminated fabrics, joined by a tape on both sides, and visual criteria for sound joint formation were determined, and the
principles of manual control of the hot air welding process in real time were developed. 4 Ref., 10 Figures.
welded joints, laminated PVC fabric, hot air welding
1. Properties of polyvinylchloride. Polymer materials [in Russian].
2. Membrana — internet magazine of laminated tissues [in Russian].
3. Zajtsev, K.I., Matsyuk, L.N., Bogdashevsky, A.V. et al. (1988)
Welding of polymer materials: Refer. Book. Ed. by K.I. Zajtsev,
L.N. Matsyuk. Moscow, Mashinostroenie [in Russian].
4. Manual welding machine Leister triac S. LEISTER. http://leister-club.ru/