Method and apparatus for making mesh structures in the form of tubes, bands or continuous sheets, by extrusion of thermoplastic material.

摘要

At least two primary reticulate products formed by 2 x 2 bundles of strands are superimposed and fused together into new mesh structures. The extrusion takes place respectively for each group by die-entry adaptors, channels, manifolds and die exits (2,5,6,8) and (9) forming bundles ("e") and ("f") and by (19, 5', 20, 22, 23) and (24) forming bundles ("c") and ("d"). Depending on the inclination of the slots (e/f) meets (d/c) on the line (1) where they fuse together into a new structure. The intersecting movement is transmitted via ring gears (18, 17, 35) and (30); adjustment is carried out by nuts (14, 31) and (28). The multi-purpose invention enables heat exchangers, radiators, packaging, filters, netting etc. to be obtained from the new structures.