US5624729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Increased pile density composite elastic material
Assignee: Kimberly Clark Worldwide Inc
•
Filing: 1995-02-06
•
Granted: 1997-04-29
•
Expires: 2015-02-06
Abstract
Abstract Disclosed is a lanate composite elastic material made by a method including the steps of applying a tensioning force to elongate at least one pressure sensitive elastomer adhesive sheet; inserting substantially individualized fibrous materials into the elastic sheet by mechanical needling the elastomer sheet while it is maintained in an elongated condition; and releasing the tensioning force so the attached fibrous materials are positioned closer together by the recovery of the elastic sheet. The resulting lanate composite elastic material has stretch and recovery properties, bulk, and desirable insulation properties. One or more layers of the lanate composite material may be combined with other layers of material to create a multi-layer structure. Also disclosed is a method of making in increased pile density composite elastic material including the step inserting substantially individualized fibrous materials into an elongated pressure sensitive elastomer adhesive sheet by stitchbonding, malipole stitchbonding, or tufting or adhering substantially individualized fibrous materials to the elongated elastomer sheet by flocking techniques. The density of attached fibrous materials in the resulting increased pile density composite elastic material is greater than could be achieved by conventional fiber insertion or adherence techniques while still maintaining desirable elastic properties and bulk.
Inventors
- 👤 Bernard Cohen
- 👤 Robert J. Roeder
- 👤 Jay S. Shultz
- 👤 Raju Venkatapathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:38
CPC Classifications
B; B32; B32B; B32B37/00; B32B37/14; B32B37/144; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/498; D04H11/00; B32B2305/00; B32B2305/22; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23943; Y10T428/23979; Y10T428/23986; Y10T428/23993
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
71 words
A lanate composite elastic material comprising: at least one pressure sensitive elastomer adhesive sheet; and nonelastic fibrous materials inserted into said pressure sensitive elastomer adhesive sheet by mechanical needling while the pressure sensitive elastomer adhesive sheet is subject to a stretching force so that, upon recovery of the pressure sensitive elastomer adhesive sheet, the fibrous materials are positioned closer together than before recovery of said sheet, thereby providing a lanate appearance.
Claim 2
Dependent Claim
71 words
A lanate composite elastic material comprising: at least one pressure sensitive elastomer adhesive sheet; and nonelastic fibrous materials inserted into said pressure sensitive elastomer adhesive sheet by mechanical needling while the pressure sensitive elastomer adhesive sheet is subject to a stretching force so that, upon recovery of the pressure sensitive elastomer adhesive sheet, the fibrous materials are positioned closer together than before recovery of said sheet, thereby providing a lanate appearance.
Claim 3
Dependent Claim
67 words
The lanate composite elastic material of claim 1, wherein the pressure sensitive elastomer adhesive sheet is comprised of an elastic polymer selected from the group consisting of elastic polyesters, elastic polyurethanes, elastic polyamides, elastic copolymers of ethylene and at least one vinyl monomer, and elastic A-B-A' block copolymers wherein A and A' are the same or different thermoplastic polymer, and wherein B is an elastomeric polymer block.
Claim 4
Dependent Claim
23 words
The lanate composite elastic material of claim 1, wherein the pressure sensitive elastomer adhesive sheet is a pressure sensitive elastomer adhesive nonwoven web.
Claim 5
Dependent Claim
35 words
The lanate composite elastic material of claim 3, wherein the pressure sensitive elastomer adhesive nonwoven web is selected from the group consisting of a web of meltblown fibers, a spunbonded web, and a bonded-carded web.
Claim 6
Dependent Claim
46 words
The lanate composite elastic material of claim 4, wherein the pressure sensitive elastomer adhesive nonwoven web is a composite web comprising a mixture of meltblown fibers and one or more other materials selected from the group consisting of wood pulp, staple fibers, particulates and superabsorbent particles.
Claim 7
Dependent Claim
15 words
The lanate composite elastic material of claim 4, wherein the meltblown fibers include meltblown microfibers.
Claim 8
Dependent Claim
25 words
The lanate composite elastic material of claim 5, wherein the fibers are selected from the group consisting of natural fibers, man-made fibers and monofilament strands.
Claim 9
Dependent Claim
24 words
The lanate composite elastic material of claim 7, wherein natural fibers are selected from the group consisting of cotton fibers, pulp fibers, and wool.
Claim 10
Dependent Claim
22 words
The lanate composite elastic material of claim 7 wherein the man-made fibers are selected from reconstituted cellulose fibers and synthetic polymer fibers.
Claim 11
Dependent Claim
28 words
The lanate composite elastic material of claim 9 wherein the synthetic polymer fibers are comprised of a polymer selected from the group consisting of polyolefins, polyesters, and polyamides.
Claim 12
Dependent Claim
32 words
The lanate composite elastic material of claim 10, wherein the polyolefin is selected from the group consisting of one or more of polyethylene, polypropylene, polybutylene, ethylene copolymers, propylene copolymers, and butylene copolymers.
Claim 13
Dependent Claim
21 words
The lanate composite material of claim 1, wherein the fibrous materials protrude from the elastic sheet at least about 1 millimeter.
Claim 14
Dependent Claim
24 words
The lanate composite material of claim 1, wherein the composite has a density ranging from about 0.2 to about 0.04 grams per cubic centimeter.
Claim 15
Dependent Claim
24 words
The lanate composite material of claim 1, wherein the composite has a normalized dry heat transfer rate of at least about 15 Clo/gram/cubic centimeter.
Claim 16
Dependent Claim
24 words
The lanate composite material of claim 1, wherein the composite has a wet heat transfer rate of at least about 2.8 Watts/M 2 ·°C.
Claim 17
Dependent Claim
19 words
The lanate composite material of claim 1, wherein the composite has a permeability index of at least about 0.5.
Claim 18
Dependent Claim
20 words
The lanate composite material of claim 1, wherein the composite has a permeability index from about 0.5 to about 0.57.
Claim 19
Dependent Claim
25 words
A multilayer material comprising at least one layer of the lanate composite elastic material of claim 1 and at least one other layer of material.
Claim 20
Dependent Claim
70 words
An increased pile density composite elastic material comprising: at least one pressure sensitive elastomer adhesive sheet; and individualized nonelastic fibrous materials inserted into said elastic sheet by stitchbonding, malipole stitchbonding or tufting techniques while the pressure sensitive elastomer adhesive sheet is subject to a stretching force so that, upon recovery of the pressure sensitive elastomer adhesive sheet, the fibrous materials are positioned closer together than before recovery of said sheet.
Claim 21
Dependent Claim
70 words
An increased pile density composite elastic material comprising: at least one pressure sensitive elastomer adhesive sheet; and individualized nonelastic fibrous materials inserted into said elastic sheet by stitchbonding, malipole stitchbonding or tufting techniques while the pressure sensitive elastomer adhesive sheet is subject to a stretching force so that, upon recovery of the pressure sensitive elastomer adhesive sheet, the fibrous materials are positioned closer together than before recovery of said sheet.
Claim 22
Dependent Claim
25 words
The increased pile density composite elastic material of claim 19 wherein the pressure sensitive elastomer adhesive sheet is a pressure sensitive elastomer adhesive nonwoven web.
Claim 23
Dependent Claim
37 words
The increased pile density composite elastic material of claim 19 wherein the pressure sensitive elastomer adhesive nonwoven web is selected from the group consisting of a web of meltblown fibers, a spunbonded web, and a bonded-carded web.
Claim 24
Dependent Claim
48 words
The increased pile density composite elastic material of claim 20, wherein the pressure sensitive elastomer adhesive nonwoven web is a composite web comprising a mixture of meltblown fibers and one or more other materials selected from the group consisting of wood pulp, staple fibers, particulates and superabsorbent particles.
Claim 25
Dependent Claim
17 words
The increased pile density composite elastic material of claim 21, wherein the meltblown fibers include meltblown microfibers.
Claim 26
Dependent Claim
25 words
The increased pile density composite elastic material of claim 20, wherein the fiber bundles are selected from the group consisting of yarns and multifilament strands.
Claim 27
Dependent Claim
81 words
An increased pile density composite elastic material comprising: at least one pressure sensitive elastomer adhesive nonwoven web of meltblown fibers; and nonelastic fibrous materials selected from the group consisting of fibers and fiber bundles, said fibrous materials projecting from the pressure sensitive elastomer adhesive nonwoven web of elastic meltblown fibers to form a pile, and wherein the increased pile density composite elastic material is capable of being stretched to a length that is at least 200 percent of its relaxed length.
Claim 28
Dependent Claim
81 words
An increased pile density composite elastic material comprising: at least one pressure sensitive elastomer adhesive nonwoven web of meltblown fibers; and nonelastic fibrous materials selected from the group consisting of fibers and fiber bundles, said fibrous materials projecting from the pressure sensitive elastomer adhesive nonwoven web of elastic meltblown fibers to form a pile, and wherein the increased pile density composite elastic material is capable of being stretched to a length that is at least 200 percent of its relaxed length.
Claim 29
Dependent Claim
130 words
An increased pile density composite elastic material comprising: at least one pressure sensitive elastomer adhesive nonwoven web of elastomer meltblown fibers; fibrous materials adhered onto at least one surface of the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers by flocking, wherein the fibrous materials are selected from the group consisting of fibers and fiber bundles and are adhered to the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers while the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers is maintained in an elongated condition so that, upon recovery of the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers, the adhered fibrous materials are positioned closer together by the recovery of the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers.
Claim 30
Dependent Claim
130 words
An increased pile density composite elastic material comprising: at least one pressure sensitive elastomer adhesive nonwoven web of elastomer meltblown fibers; fibrous materials adhered onto at least one surface of the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers by flocking, wherein the fibrous materials are selected from the group consisting of fibers and fiber bundles and are adhered to the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers while the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers is maintained in an elongated condition so that, upon recovery of the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers, the adhered fibrous materials are positioned closer together by the recovery of the pressure sensitive elastomer adhesive nonwoven web of elastomeric meltblown fibers.
Claim 31
Dependent Claim
48 words
The increased pile density composite elastic material of claim 26, wherein the pressure sensitive elastomer adhesive nonwoven web is a composite web comprising a mixture of meltblown fibers and one or more other materials selected from the group consisting of wood pulp, staple fibers, particulates and superabsorbent particles.
Claim 32
Dependent Claim
17 words
The increased pile density composite elastic material of claim 27, wherein the meltblown fibers include meltblown microfibers.
Claim 33
Dependent Claim
25 words
The increased pile density composite elastic material of claim 26, wherein the fiber bundles are selected from the group consisting of yarns and multifilament strands.
References Cited (Backward Citations)
US2951005A
Cited
US4741949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-04-28 | 2000-10-28 | 2001-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-28 | 2004-10-28 | 2005-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-28 | 2008-10-28 | 2009-04-29 | $7700.00 | Window Closed / Lapsed |