Textile Backsheet
Textile backsheets including a nonwoven fabric and film, such as a vapor-permeable and liquid impermeable (VPLI) film or a non-permeable film, are provided, wherein the nonwoven fabric is directly or indirectly bonded to the film. Methods of making such textile backsheets and absorbent articles including the textile backsheets are also provided.
1 . A textile backsheet (TBS), comprising:
(i) a nonwoven fabric; and
(ii) a film comprising a vapor-permeable and liquid impermeable (VPLI) film or a non-permeable film, wherein the film has a total basis weight from about 3 to about 12 grams-per-square-meter (gsm), and wherein the nonwoven fabric is directly or indirectly bonded to the film;
wherein the TBS has (a) a basis weight from about 10 to about 20 gsm, and (b) an abrasion resistance grade (“Grade”) of at least about 3.0 as determined by SS-EN ISO 12945-2.
2 . The TBS of claim 1 , wherein the nonwoven fabric has a first basis weight from about 4 gsm to about 10 gsm.
3 . The TBS of claim 1 , wherein the nonwoven fabric comprises at least one spunbond layer, at least one meltblown layer, at least one carded layer, or any combinations thereof.
4 . The TBS of claim 3 , wherein the nonwoven fabric comprises one or more spunbond layers.
5 . The TBS of claim 1 , wherein the nonwoven fabric comprises a high-loft nonwoven fabric having a density of less than about 60 kg/m 3 , a thickness comprising from about 0.3 mm to about 3 mm, or both.
6 . The TBS of claim 1 , wherein the nonwoven fabric comprises a first plurality of multi-component crimped fibers.
7 . The TBS of claim 6 , wherein the multi-component crimped fibers comprise continuous fibers, staple fibers, or both.
8 . The TBS of claim 7 , wherein the multi-component crimped fibers comprise crimped continuous spunbond fibers.
9 . The TBS of claim 1 , wherein the film comprises a thickness from about 2 to about 8 microns.
10 . The TBS of claim 9 , wherein the film comprises a single-layer film.
11 . The TBS of claim 9 , wherein the film comprises a VPLI film that comprises at least one of a thermoplastic urethane, a polyether-block-amide copolymer, a polyether-block-ester copolymer, polyester-block-amide copolymer, or a copolyester thermoplastic elastomer.
12 . The TBS of claim 9 , wherein the film comprises a multi-layer film comprising at least a first skin layer and a core layer, wherein the first skin layer has a first thickness and the core layer has a second thickness, and the first thickness is less than the second thickness.
13 . The TBS of claim 1 , wherein film comprises a VPLI film and has a MVTR comprising at least about 4000 g/m 2 /24 hr as determined according to NWSP 070.4.R0, the, TBS has a MVTR comprising at least about 4000 g/m 2 /24 hr as determined according to NWSP 070.4.R0, or both.
14 . The TBS of claim 1 , wherein the TBS has a first ratio between a machine direction tensile strength (MDTS) at peak (N/25 mm) and a basis weight of the TBS (gsm) from about 1:1 to about 1.5:1.
15 . The TBS of claim 1 , wherein the TBS has a machine-direction percent elongation at peak from about 40% to about 100% as determined by the ASTM D5035,.
16 . An absorbent article, comprising:
(i) a TBS according to claim 1 ;
(ii) a liquid permeable topsheet; and
(iii) an absorbent body located between the TBS and the liquid permeable topsheet.
17 . The absorbent article of claim 16 , wherein the absorbent article comprises a diaper.
18 . A method of forming a textile backsheet (TBS), comprising:
(i) providing or forming a nonwoven fabric;
(ii) providing for forming a film having a total basis weight from about 3 to about 12 grams-per-square-meter (gsm), wherein the film comprises a vapor-permeable and liquid impermeable (VPLI) film or a non-permeable film; and
(iii) directly or indirectly bonding the nonwoven fabric to the film to form the TBS;
wherein the TBS has (a) a basis weight from about 10 to about 20 gsm, and (b) an abrasion resistance grade (“Grade”) of at least about 3.0 as determined by SS-EN ISO 12945-2.
19 . The method of claim 18 , wherein the step of directly or indirectly bonding the nonwoven fabric to the film comprises directly bonding the nonwoven fabric to the film via the formation of one or more thermal bonds between the nonwoven fabric and the film, via melt-extruding a precursor film directly onto the nonwoven fabric followed by incrementally stretching the precursor film to form the film, or via melt-extruding the film directly onto the nonwoven fabric.
20 . The method of claim 18 , wherein the step of directly or indirectly bonding the nonwoven fabric to the film comprises indirectly bonding the nonwoven fabric to the film via addition of an adhesive layer between the nonwoven fabric and the film.