Procedure for obtaining thermoformed macroholes on a thermoplastic film already having microholes, and device for obtaining a thermoplastic macroholes film

摘要

procedure for obtaining thermoformed macro holes on a thermoplastic film already having micro holes, and device for obtaining a thermoplastic macro hole film. a machine used to produce and manufacture a resilient, soft-touch film that is suitable for drainage use. A film produced by such a machine has at least on one surface an essentially continuous design of three-dimensional (3d) funnels directed in a manner essentially perpendicular to the surface from which the micro-apertures originate. It also presents, on the opposite surface, a continuous drawing composed of 3d macro funnels directed in a manner essentially perpendicular to the surface from which the macro funnels originate. The term funnels is intended to describe a multiplicity of funnels not distinguishable by the human eye at a distance equal to or greater than 450 mm, while the term funnels is intended to describe funnels clearly visible to the human eye at a distance. greater than 450 mm.