Process for producing filling material for¹three-dimensionally shaped textile structures and apparatus¹therefor

摘要

Filling fibre is made from a tow of continuous filaments or staple fibre contg. at least one kind of bonding fibre by heating it so that the bonding fibre adhere at least at the surface of the tow to the filling fibres. It is cooled to obtain a tow which is consolidated at least on its surface and is then cut into lengths of 2 to 6 cm. - A staple tow can consist of draw frame sliver and can be stabilised mechanically by false twisting. The two can be polyethylene terephthalate of 4-12 ktex with filaments of 5-15 dtex. The filling fibre can have two or three dimensional crimp and the binding fibres can be modified polyethylene terephthalate with a softening point more than 10 deg.C lower, or bicomponent core/sheath fibre. - Sliver (6) is taken through a false twisting device (26) to a heating zone (2) followed by a cooling zone (3). A forwarding zone (4) with an annular airjet (17) then takes the sliver to a cutting zone (5) to produce filling flock (19).