Stretchable Laminates of Nonwoven Web(s) and Elastic Film
First Claim
Patent Images
1. A stretchable laminate comprising:
- a. a first nonwoven web, said first nonwoven web comprising;
a first layer of fibers comprising spunbond fibers wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, said first layer having a top and a bottom surface;
a second layer of fibers comprising meltblown fibers, said second layer having a top and a bottom surface wherein the top surface of said second layer faces said bottom surface of said first layer; and
a third layer of fibers comprising spunbond fibers layer, said third layer having a top and a bottom surface wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, wherein the top surface of said third layer faces said bottom surface of said second layer such that said second layer is positioned between said first and third layers;
andb. a web of an elastomeric material having top and bottom surfaces,wherein the bottom surface of said third layer comprising spunbond fibers of said first nonwoven web is bonded to said top surface of said elastomeric web to form a laminate and wherein at least a portion of said stretchable laminate is activated such that said first nonwoven web has a Residual Maximum Peak Force of at least 0.3 N/cm after activation of at least a portion of said laminate.
1 Assignment
0 Petitions
Accused Products
Abstract
A stretchable laminate, a process of making a stretchable laminate and a disposable absorbent article that includes a stretchable laminate are disclosed. The stretchable laminate includes a nonwoven web and a web of elastomeric material. The nonwoven web includes two layers of spunbond fibers and one layer of meltblown fibers. Some of the meltblown fibers are present in the interstices formed by the spunbond fibers of one of the layers. As a result of activation of the stretchable laminate, the nonwoven web has a Residual Maximum Peak Force of at least 0.3 N/cm.
96 Citations
20 Claims
-
1. A stretchable laminate comprising:
-
a. a first nonwoven web, said first nonwoven web comprising; a first layer of fibers comprising spunbond fibers wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, said first layer having a top and a bottom surface; a second layer of fibers comprising meltblown fibers, said second layer having a top and a bottom surface wherein the top surface of said second layer faces said bottom surface of said first layer; and a third layer of fibers comprising spunbond fibers layer, said third layer having a top and a bottom surface wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, wherein the top surface of said third layer faces said bottom surface of said second layer such that said second layer is positioned between said first and third layers; and b. a web of an elastomeric material having top and bottom surfaces, wherein the bottom surface of said third layer comprising spunbond fibers of said first nonwoven web is bonded to said top surface of said elastomeric web to form a laminate and wherein at least a portion of said stretchable laminate is activated such that said first nonwoven web has a Residual Maximum Peak Force of at least 0.3 N/cm after activation of at least a portion of said laminate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A process of making a stretchable laminate comprising:
-
obtaining a first nonwoven web, said first nonwoven web comprising; a first layer of fibers comprising spunbond fibers wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, said first layer having a top and a bottom surface; a second layer of fibers comprising meltblown fibers, said second layer having a top and a bottom surface wherein the top surface of said second layer faces said bottom surface of said first layer; and a third layer of fibers comprising spunbond fibers layer, said third layer having a top and a bottom surface wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, wherein the top surface of said third layer faces said bottom surface of said second layer such that said second layer is positioned between said first and third layers; obtaining a web of an elastomeric material having top and bottom surfaces; bonding the bottom surface of said third layer comprising spunbond fibers of said first nonwoven web to said top surface of said elastomeric web; and activating at least a portion of said laminate such that said first nonwoven web has a Residual Maximum Peak Force of at least 0.3 N/cm after activation of at least a portion of said laminate. - View Dependent Claims (10, 11, 12, 13, 14, 15)
-
-
16. A disposable absorbent article comprising:
-
a chasis having opposing first and second longitudinal side edges, said chassis comprising a liquid pervious topsheet, a liquid impervious backsheet and an absorbent core disposed between said topsheet and said backsheet; and a pair of stretchable ears or side panels connected to each longitudinal side edge of said chassis, each of said ears or side panels comprising a stretchable laminate comprising; a. a first nonwoven web, said first nonwoven web comprising; a first layer of fibers comprising spunbond fibers wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, said first layer having a top and a bottom surface; a second layer of fibers comprising meltblown fibers, said second layer having a top and a bottom surface wherein the top surface of said second layer faces said bottom surface of said first layer; and a third layer of fibers comprising spunbond fibers layer, said third layer having a top and a bottom surface wherein said spunbond fibers are multi-component fibers having a core comprising a first polymer having a first melt temperature and a sheath comprising a second polymer having a second melt temperature wherein said second melt temperature is lower than said first melt temperature, wherein the top surface of said third layer faces said bottom surface of said second layer such that said second layer is positioned between said first and third layers; and b. a web of an elastomeric material having top and bottom surfaces, wherein the bottom surface of said third layer comprising spunbond fibers of said first nonwoven web is bonded to said top surface of said elastomeric web to form a laminate and wherein at least a portion of said stretchable laminate is activated such that said first nonwoven web has a Residual Maximum Peak Force of at least 0.3 N/cm after activation of at least a portion of said laminate. - View Dependent Claims (17, 18, 19, 20)
-
Specification