| 摘要 |
<p>In the first of three stages, the first single-layer material (6) is formed as a plane sheet, panel or tube, by extrusion or injection molding. In the second stage, the sheet or panel is deep-drawn, or the hose is blow-molded, to a first preform with a pipe connection contour. In the third stage, a second material arrangement (7) is applied to one side of the first preform by injection molding, co-injection or using the mono-sandwich method, forming the pipe connection contour. In the case of the preform made from a sheet or panel, its base is cut-out, before, during or after the third stage. In a first stage a first layer (6, 6a) and a second layer (7, 6b) and if appropriate a third layer (6c), undergoing melt-bonding by coextrusion or they are coated over one another by layer-for-layer injection molding, to form the sheet, panel or tube. The second material arrangement(7) is applied on the inner side or the outer side of the first preform. The second material arrangement includes a core layer (7b) and a skin layer (7a) made by co-injection or the mono-sandwich process. The skin layer and the first material arrangement undergo, and are mutually-compatible for, melt bonding. The diffusion barrier layer includes a reinforcing material, especially glass fibers. The method and its variants are further detailed in accordance with the foregoing principles.</p> |
