Electrically conductive, elastically stretchable hybrid yarn, method for manufacture thereof and textile product with a hybrid yarn of this kind

Abstract

The invention relates to an electrically conductive, elastically stretchable hybrid yarn ( 3 ), in which an elastically stretchable core filament ( 1 ) is surrounded by an electrically conductive fibre sheath ( 2 ). This results in improved technical properties of a hybrid yarn of this kind in conjunction with a simplified manufacturing method.

1 . Electrically conductive, elastically stretchable hybrid yam with an elastically stretchable core ( 1 ) and an electrically conductive element assigned to the core ( 1 ) on the circumferential side which permits the elastic stretch of the core, characterised in that the electrically conductive element comprises a fibre sheath ( 2 ) surrounding the core ( 1 ) at least partially and at least partially comprising electrically conductive fibres ( 5 ) which are bonded with each other.  
   
   
       2 . Hybrid yam according to  claim 1 , characterised in that the core is formed from at least one filament ( 4 ) surrounded by the fibre sheath ( 2 ).  
   
   
       3 . Hybrid yam according to  claim 2 , characterised in that the at least one filament ( 4 ) comprises textured polyester or Lycra or a similar material.  
   
   
       4 . Hybrid yam according to  claim 1 , characterised in that the electrically conductive fibres ( 5 ) are selected from the group: 
 conductive polyester fibres; high-grade steel fibres; carbon fibres; metal-coated polymers, silver-plated, copper-plated; nickel-plated carbon fibres and similar.    
   
   
       5 . Hybrid yam according to any one of  claims 1  to  4 , characterised in that the fibres ( 5 ) have a fineness of 1.0-3.3 dtex.  
   
   
       6 . Hybrid yam, according to any one of  claims 1  to  5 , characterised in that the fibres ( 5 ) have a cut length of 35-60 mm.  
   
   
       7 . Hybrid yarn according to  claim 1 , characterised in that fusible fibres are mixed into the electrically conductive fibres ( 5 ).  
   
   
       8 . Hybrid yam according to  claim 7 , characterised in that 5-10% fusible fibres are mixed in.  
   
   
       9 . Hybrid yam according to any one of  claims 1  to  8 , characterised in that the fibres are bonded with the core by means of the so-called friction spining method.  
   
   
       10 . Method for manufacturing a hybrid yam according to any one of  claims 1  to  9 , characterised by 
 the introduction of a core filament, which can also comprise single filaments    the breaking down of slubbings or a drawing sliver into electrically conductive individual fibres and optionally fusible fibres in a spinning process    laying the fibres substantially at right angles around the continuous core filament, and    friction-bonding the fibres with the core filament using the so-called friction spinning method.    
   
   
       11 . Method according to  claim 10 , characterised in that if fusible fibres are present, they are heated.  
   
   
       12 . Textile product containing a hybrid yam according to any one of  claims 1  to  9 .