Laminated composites
First Claim
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1. A laminated elastic composite, comprising:
- a first nonwoven web layer having a machine direction and a cross direction;
a scrim layer adjacent to the first nonwoven web layer comprising spaced-apart, nonelastic filaments oriented substantially in the machine direction that are substantially perpendicular to spaced-apart filaments oriented substantially in the cross-direction;
an elastic layer adjacent to the scrim layer comprising a series of substantially parallel, spaced-apart elastic filaments wherein the length of the elastic filaments are oriented substantially in the machine direction;
a fibrous adhesive layer adjacent the elastic layer, and a second nonwoven web layer adjacent to the fibrous adhesive layer;
wherein at least one of the nonwoven web layers comprises loops, and further wherein the fibrous adhesive layer comprises a melt-blown fibrous adhesive layer comprising multilayer fibers, said fibers comprising one or more layers of a pressure-sensitive adhesive and one or more layers of a non-adhesive polymer.
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Abstract
A laminated composite suitable for use in medical products such as tapes and wraps. The composite includes, for example, a first nonwoven fiber layer, an elastic layer, a melt blown adhesive fiber layer, and a second nonwoven fiber layer. A scrim layer serves as a deadstop, or stretch limit, to prevent over stretching. The non-woven fiber layer(s) and/or the scrim layer form suitable loops for a hook and loop fastening system. The scrim layer in some embodiments is employed to make the composite finger tearable. The melt blown adhesive layer, nonwoven web layer and elastic layer form a breathable, porous elastic composite. Methods of manufacturing the composite are also disclosed.
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Citations
28 Claims
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1. A laminated elastic composite, comprising:
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a first nonwoven web layer having a machine direction and a cross direction;
a scrim layer adjacent to the first nonwoven web layer comprising spaced-apart, nonelastic filaments oriented substantially in the machine direction that are substantially perpendicular to spaced-apart filaments oriented substantially in the cross-direction;
an elastic layer adjacent to the scrim layer comprising a series of substantially parallel, spaced-apart elastic filaments wherein the length of the elastic filaments are oriented substantially in the machine direction;
a fibrous adhesive layer adjacent the elastic layer, and a second nonwoven web layer adjacent to the fibrous adhesive layer;
wherein at least one of the nonwoven web layers comprises loops, and further wherein the fibrous adhesive layer comprises a melt-blown fibrous adhesive layer comprising multilayer fibers, said fibers comprising one or more layers of a pressure-sensitive adhesive and one or more layers of a non-adhesive polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A laminated composite, comprising:
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a first nonwoven web layer;
a scrim layer adjacent to the first nonwoven web layer comprising spaced-apart, non-elastic filaments oriented substantially in the machine direction that are substantially perpendicular to spaced-apart filaments oriented in the cross-direction; and
a fibrous adhesive layer adjacent the scrim layer;
wherein the fibrous adhesive layer comprises a melt-blown fibrous adhesive layer comprising multilayer fibers, said fibers comprising one or more layers of a pressure-sensitive adhesive and one or more layers of a non-adhesive polymer. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
a pressure-sensitive adhesive layer adjacent to the fibrous adhesive layer.
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19. A laminated composite according to claim 16, wherein the nonwoven layer comprises a nonwoven material selected from the group consisting of a melt blown nonwoven material, a spunbond nonwoven material, a spun laced nonwoven material, a staple carded web, an air laid web and a wet laid web.
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20. A laminated composite according to claim 16, wherein the nonwoven layer comprises a spun bond nonwoven material.
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21. A laminated composite according to claim 16, wherein the scrim comprises a woven scrim.
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22. A laminated composite according to claim 16, wherein the scrim has in the range of about 5-30 filaments/2.5-cm in the machine direction and in the range of about 5-30 filaments/2.5-cm in the cross direction.
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23. A laminated composite according to claim 16, wherein the laminated composite is cohesive.
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24. A laminated composite, comprising:
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a scrim layer comprising spaced-apart filaments oriented substantially in the machine direction that are substantially perpendicular to spaced-apart filaments oriented substantially in the cross-direction;
an elastic layer comprising a series of substantially parallel, spaced-apart elastic filaments wherein the elastic filaments are oriented substantially in the machine direction; and
a fibrous adhesive layer adjacent the elastic layer;
wherein the scrim layer comprises loops, and farther wherein the fibrous adhesive layer comprises a melt-blown fibrous adhesive layer comprising multilayer fibers, said fibers comprising one or more layers of a pressure-sensitive adhesive and one or more layers of a non-adhesive polymer. - View Dependent Claims (25, 26, 27, 28)
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Specification