1. A method of forming a seam comprising etapyvrascheniya cylinder mold about a rotational axis, said cylinder forming an opening for fluid and an element applies pressure formed radially extended outward from the cylinder mold near the outlet channel for fluid, the rotation of the support cylinder adjacent to the a forming cylinder advancing the first blank in the machine direction on the forming cylinder with a spatial separation between the hole for the fluid and the first workpiece, advancing the second blank in the machine direction, wherein the first workpiece is located between the second workpiece and the forming cylinder maintain spatial separation between the first workpiece and an aperture for fluid through the element, applying pressure, heating the fluid to a temperature sufficient to at least partially melt the preforms jet direction of the heated fluid through the opening for the fluid substance on the overlap of the first and second workpieces partial melting of the overlap zone iszhatiya overlapping zone in the gap between the element applying a pressure and a reference tsilindrom.2. The method of claim. 1, characterized in that it further comprises wrapping the first and second blanks around at least a portion of the rotating mold tsilindra.3. The method of claim. 1, characterized in that the cylinder further comprises forming an outer peripheral surface, the member applies pressure, and an outlet channel for fluid arranged on the outer peripheral surfaces1. Способ формирования шва, содержащий этапывращения формующего цилиндра вокруг оси вращения, при этом указанный формующий цилиндр содержит отверстие для текучего вещества и элемент, прикладывающий давление, выполненный протяженным радиально наружу от формующего цилиндра вблизи выпускного канала для текучего веществавращения опорного цилиндра, прилегающего к формующему цилиндрупродвижения первой заготовки в направлении обработки на формующем цилиндре с пространственным разносом между отверстием дл
