IMPROVEMENTS IN THE PRODUCTION OF LOW-DENSITY LAMINAR MATERIAL, PERMEABLE TO THE AIR, THAT SUPPORTS SOLID PARTICLES.

摘要

THE INVENTION PROVIDES A METHOD FOR THE PRODUCTION OF AIR-PERMEABLE LAMINATED MATERIAL OF PARTICULATED SMOOTH BEARING DIFFERENT FROM SELECTED WOVEN OR BRAIDED MATERIAL OF NON-FLAT TISSUE AND FABRIC MATERIALS OPENING A SANDWATERING FABRIC COMPOSITION SUBSTANTIAL ABSENCE OF FIBROUS MATERIAL; IT HAS A SIDE OF A PREFORMED AIR PERMEABLE LAMINATED MATERIAL (3), WHOSE MATERIAL HAS A DENSITY AT OR BELOW 0.25 G / CM3, IN THE COURSE OF A CURRENT OF SUCH GASEOUS AGENT AND A PARTICULATED SOLID TRAILED, WHILE MAINTAINING A PRESSURE DROP THROUGH THE THICKNESS OF AIR-PERMEABLE LAMINATED MATERIAL PREFORMED FROM SIDE SIDE TO SUCH AIR-PERMEABLE LAMINATED MATERIAL, WHERE TO TRAP PART OR ALL OF THE PARTICULATED SOLID TRAILED OVER AND OVER AND INSIDE THE PERMANENT MATERIAL; THE AVERAGE SIZE OF THE PORE OF THE PREFORMED LAMINATED MATERIAL IS GREATER THAN THE AVERAGE SIZE OF THE PARTICULATE OF THE PARTICULATED SOLID AND FIXING THE PARTICULATE SOLID RETAINED ON OR ON AND INTO THE AIR PERMEABLE MATERIAL WITH AN ADHESIVE.