Avtomaticheskaya Svarka (Automatic Welding), #10, 2020, pp. 43-48
Mechanized welding of laminated PVC fabrics with heated air
M.G. Korab, M.V. Iurzhenko, A.V. Vashchuk, 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
manufactured with double-sided PVC coating. The most widespread practical method of manual and mechanized welding of
laminated fabrics with PVC coating is hot air welding. In this work, the features of hot air welding of the overlapped welds of
laminated PVC fabric were investigated in the manufactured experimental installation. The geometric dimensions and shape of
the produced experimental welds from laminated fabric Unisol 950 (specific weight is 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 uninterrupted penetration. It was shown that a dense penetration along the entire plane of the welded joint is achieved
by forming a bead uniform as to its diameter of the molten PVC in the welding process under the pressure roller. The nature
of running thermal processes in the welding zone was evaluated by the geometric parameters of the melt bead. The optimal
parameters of the welding process of butt welds of laminated fabrics, joined by the tape on both sides and visual criteria for a
quality joint formation were determined, as well as the principles of manual control of the hot air welding process in real time
was developed. 4 Ref., 10 Fig.
welded joints, laminated PVC fabric, hot air welding
1. Properties of polyvinylchloride. Polymer materials [in
Russian]. http://www.polymerbranch. com/catalogp/view.
2. Membrana – internet magazine of laminated tissues [in
3. Zajtsev, K.I., Matsyuk, L.N., Bogdashevsky, A.V. et al.
(1988) Welding of polymer materials. In: Refer. book. Ed.
by K.I. Zajtsev, L.N. Matsyuk. Moscow, Mashinostroenie [in
4. Manual welding machine Leister triac S. LEISTER. http://