High cross-directional elongation nonwoven fabrics
AssigneeFibertex Personal Care A/S
InventorsLasse Kristoffer TAIDAL, Brian UDENGAARD
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Abstract
The invention relates to nonwoven sheets having high inherent cross-machine directional elongation, the sheets comprising two facing layers of spunbonded nonwoven material and a middle layer of meltblown nonwoven material, wherein the spunbonded material of the facing layers comprises crimped fibers, wherein the fibers of the meltblown material of the middle layer comprise a thermoplastic elastomer, and wherein the nonwoven sheet is underbonded. The invention also relates to a method of making such nonwovens, laminates comprising such nonwoven and an elastically stretchable material, and hygiene articles comprising such nonwoven sheets or laminates.
Claims20
A method for making a nonwoven sheet, the nonwoven sheet comprising two facing layers of spunbonded nonwoven material and a middle layer of meltblown nonwoven material, wherein the spunbonded material of the facing layers comprises crimped multicomponent fibers, the method comprising the following in-line steps:
- spinning crimped multicomponent fibers and laying them onto a moving spinbelt to form a web preceding one of the facing layers;
- meltblowing fibers and laying them onto the surface of the web formed in the previous step to form a web preceding the middle layer;
- spinning crimped multicomponent fibers and laying them onto the surface of the web formed in the previous step to form a web preceding the other one of the facing layers;
- and
- bonding the adjacent webs to form the nonwoven sheet by point-bond hot calendering;
- wherein
- the fibers of the meltblown material of the middle layer comprise a thermoplastic elastomer (TPE);
- and
- that the temperature of the engraved roll of the calender is at least 10° C. and/or 5% lower than the melting temperature, as determined with DSC according to ISO 11357-3, of the lowest melting component of the multicomponent fibers.
Dependencies are inferred from the claim text.