Generally, voluminous nonwovens consist of self-crimping fibres. In the past, these could not be produced by spunbond technology. In fact, it is possible now thanks to the high loft process currently being tested with success by Reicofil. Basis for this is the Reicofil bico technology in which filaments of two different raw materials are produced in a side-side structure. Self-crimping of the filaments may just be caused by the combination of materials or crimping may be activated by thermal energy. The nonwoven fabrics are subsequently bonded using hot air or a special embossing calender.
The thick, soft nonwovens is well suited mainly for applications still using carded nonwovens. It is expected that high loft nonwovens can be produced more cost-effectively in the future. Possible applications are for example: