METHOD OF PRODUCTION OF SPACER NONWOVEN FABRIC BY METHOD OF COMBINED BONDING Russian patent published in 2015 - IPC D04H3/12 D06M13/00 

FIELD: textiles, paper.

SUBSTANCE: fibrous material is formed on a carding machine with the ability of subsequent increasing the layers on the web-spreader or formed with aerodynamic method. The fusible bicomponent or polypropylene fibre is added into the composition of the fibrous mixture. The formed canvas is subjected to thermal binding by feeding it into the furnace with the supporting conveyor and the temperature of 120-150°C, after which the formed volume web structure is subjected to finishing by the polymeric binding methods of immersion and spinning or spraying with nozzles. Then the web is dried in the said furnace with hot air blowing with the temperature at the inlet of the furnace chamber of 100-110°C, in the middle part of the chamber of 120-130°C, at the outlet of the chamber of 100°C. After drying, the web is additionally finished with feeder ironer folders and stackers. The fibrous mixture of the composition is used, containing 15% bicomponent fibre and 85% polyester fibre; or 10% polypropylene fibre, 20% cotton fibre and 70% polyester fibre; or 20% bicomponent fibre, 20% cotton fibre and 60% polyamide fibre.

EFFECT: method enables to reduce migration of fibres, to improve air permeability, to reduce creasing property, to improve elasticity of volume nonwoven polymer-containing web.

3 cl, 1 tbl, 3 ex