Process for the manufacture of a transpirable, permeable, elastic fabric or a non woven fabric and product thus obtained

Abstract

A process for manufacturing a transpirable, permeable, elastic fabric or a non woven fabric and product thus obtained results in said fabric or non-woven fabric including first threads or fibres arranged in the direction of the weft and in that of the warp, including, either in the direction of the weft or in that of the warp or both, second threads or fibres, the melting point of which is below that of the first threads. The fabric is characterised in that it comprises a first stabilisation phase of the fabric and a second phase of heat pre-shaping of the referred fabric resulting from the first phase, blocking the elasticity of the resulting fabric or non-woven fabric in function of the greater or lesser density of the first threads and of the greater or lesser quantity of second threads that are melted.

1 . A process for manufacturing a transpirable, permeable, elastic fabric or a non woven fabric of the type in which said fabric or non-woven fabric comprises first threads or fibres arranged in the direction of the weft and in that of the warp, including, either in the direction of the weft or in that of the warp or both, second threads or fibres, the melting point of which is below that of the first threads or fibres and which is characterised in that it comprises:
 a first stabilisation phase of the fabric or non-woven fabric in which, at least one part of said fabric or non-woven fabric is subjected to a temperature equivalent to the minimum shape memory temperature of the first threads or fibres, with said temperature being below the melting point of the second threads and   a second phase of heat pre-shaping of the referred fabric or non-woven fabric resulting from the first phase in which temperature and pressure is applied over at least part of said fabric or non-woven fabric, with said temperature being equal to or greater than the melting point of the second threads or fibres, thus varying the elasticity of the area of fabric or non-woven fabric to which the mentioned heat is applied,   
       blocking the elasticity of the resulting fabric or non-woven fabric in function of the greater or lesser density of the first threads or fibres and of the greater or lesser quantity of second threads or fibres that are melted. 
     
     
         2 . Process in accordance with  claim 1  characterised in that the second phase temperature coincides with the minimum shape memory temperature of the first threads or fibres. 
     
     
         3 . Process in accordance with  claim 1  characterised in that it incorporates a third phase in which a softener is applied to the product obtained at the end of the second phase. 
     
     
         4 . Process in accordance with  claim 1  characterised in that it is applied to woven and knitted fabrics and of pone or two sides. 
     
     
         5 . Process in accordance with  claim 1  characterised in that the second phase is applied flat and/or shaped. 
     
     
         6 . Process in accordance with  claim 1  characterised in that the fabric or non-woven fabric is a cut piece before the second phase is applied. 
     
     
         7 . Process in accordance with  claim 1  characterised in that the fabric or non-woven fabric is a garment before the first phase is applied. 
     
     
         8 . Process in accordance with  claim 1  characterised in that the fabric or non-woven fabric is a garment before the second phase is applied. 
     
     
         9 . A fabric made in accordance with the process of  claim 1 , wherein said fabric or non-woven fabric comprises first threads or fibres arranged in the direction of the weft and in that of the warp, including, either in the direction of the weft or in that of the warp or both, second threads or fibres, the melting point of which is below that of the first threads or fibres and which is characterised in that the melting point of the second threads or fibres is equal to or greater than the minimum shape memory temperature of the first threads or fibres. 
     
     
         10 . A fabric in accordance with  claim 9  characterised in that the first threads or fibres and the second threads or fibres are synthetic threads or fibres. 
     
     
         11 . A fabric in accordance with  claim 9  characterised in that it incorporates a softener. 
     
     
         12 . A fabric in accordance with  claim 9  characterised in that it is a fabric with two sides. 
     
     
         13 . A fabric in accordance with  claim 9  characterised in that it is a cut piece. 
     
     
         14 . A fabric in accordance with  claim 9  characterised in that the fabric or non-woven fabric is a garment.