US5230701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric adhesive and cohesive materials
Assignee: 3M Co
•
Filing: 1992-02-25
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Granted: 1993-07-27
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Expires: 2012-02-25
Abstract
Abstract A nonwoven elastomeric web is provided. The web comprises thermoplastic elastomeric melt-blown small diameter fibers having a diameter of less than about 50 microns, the small diameter fibers being randomly arrayed and bonded at points of contact such that the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in a direction perpendicular to the direction of web formation and the web recovers at least about 85% in the machine direction after being stretched 50%. The web is particularly useful as wound dressing or bandaging materials.
Inventors
- 👤 Daniel E. Meyer
- 👤 John E. Riedel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:01
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/0273; A61F13/023; A61F13/0243; A61F13/0246; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; Y; Y10; Y10S; Y10S602/00; Y10S602/903; Y10T; Y10T442/00; Y10T442/60; Y10T442/601; Y10T442/608; Y10T442/614; Y10T442/626; Y10T442/68
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
129 words
A nonwoven elastomeric web comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than about 50 microns, the thermoplastic elastomeric small diameter fibers being selected from the group consisting of elastomeric polyurethanes, elastomeric polyesters, and elastomeric polyamides, and being randomly arrayed and bonded at points of contact such that the web has a machine direction tensile strength of at least about 30 g/2.5 cm width/g/m 2 basis weight, the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in the direction perpendicular to the direction of web formation, the web has multi-directional elastic properties, and the web recovers at least about 85% in the machine direction after being stretched 50%.
Claim 2
Dependent Claim
129 words
A nonwoven elastomeric web comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than about 50 microns, the thermoplastic elastomeric small diameter fibers being selected from the group consisting of elastomeric polyurethanes, elastomeric polyesters, and elastomeric polyamides, and being randomly arrayed and bonded at points of contact such that the web has a machine direction tensile strength of at least about 30 g/2.5 cm width/g/m 2 basis weight, the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in the direction perpendicular to the direction of web formation, the web has multi-directional elastic properties, and the web recovers at least about 85% in the machine direction after being stretched 50%.
Claim 3
Dependent Claim
24 words
The nonwoven elastomeric web of claim 1 wherein the elastomeric small diameter fibers have diameters of from about 5 microns to about 30 microns.
Claim 4
Dependent Claim
30 words
The nonwoven elastomeric web of claim 1 wherein the basis weight of the nonwoven elastomeric web is in the range of from about 15 to about 150 grams/m 2 .
Claim 5
Dependent Claim
20 words
The nonwoven elastomeric web of claim 1 wherein the web has an elongation at break of at least about 250%.
Claim 6
Dependent Claim
29 words
The nonwoven elastomeric web of claim 1 wherein the web has a machine direction force at 50% elongation of at least about 5 g/2.5 cm width/g/m 2 basis weight.
Claim 7
Dependent Claim
28 words
The nonwoven elastomeric web of claim 1 wherein the web has a recovery force at 50% elongation of at least about 1.2 g/2.5 cm width/g/m 2 basis weight.
Claim 8
Dependent Claim
23 words
The nonwoven elastomeric web of claim 1 wherein the web recovers at least about 80% in the cross direction after being stretched 50%.
Claim 9
Dependent Claim
167 words
An adhesive dressing comprising (1) a nonwoven elastomeric web having a first face and a second face comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than about 50 microns, the thermoplastic elastomeric small diameter fibers being selected from the group consisting of elastomeric polyurethanes, elastomeric polyesters, and elastomeric polyamides, and being randomly arrayed and bonded at points of contact such that the web has a machine direction tensile strength of at least about 30 g/2.5 cm width/g/m 2 basis weight, the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in a direction perpendicular to the direction of web formation, the web has multi-directional elastic properties, and the web recovers at least about 85% in the machine direction after being stretched 50%, (2) a pressure-sensitive adhesive on the first face of the web, and (3) a low adhesion backsize coating on the second face of the web.
Claim 10
Dependent Claim
167 words
An adhesive dressing comprising (1) a nonwoven elastomeric web having a first face and a second face comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than about 50 microns, the thermoplastic elastomeric small diameter fibers being selected from the group consisting of elastomeric polyurethanes, elastomeric polyesters, and elastomeric polyamides, and being randomly arrayed and bonded at points of contact such that the web has a machine direction tensile strength of at least about 30 g/2.5 cm width/g/m 2 basis weight, the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in a direction perpendicular to the direction of web formation, the web has multi-directional elastic properties, and the web recovers at least about 85% in the machine direction after being stretched 50%, (2) a pressure-sensitive adhesive on the first face of the web, and (3) a low adhesion backsize coating on the second face of the web.
Claim 11
Dependent Claim
173 words
An elastomeric cohesive wrap comprising (1) a nonwoven elastomeric web having a first face and a second face comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than about 50 microns, the thermoplastic elastomeric small diameter fibers being selected from the group consisting of elastomeric polyurethanes, elastomeric polyesters, and elastomeric polyamides, and being randomly arrayed and bonded at points of contact such that the web has a machine direction tensile strength of at least about 30 g/2.5 cm width/g/m 2 basis weight, the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in a direction perpendicular to the direction of web formation, the web has multi-directional elastic properties, and the web recovers at least about 85% in the machine direction after being stretched 50% and (2) a self-adhesive coating adhered to at least a one face of the web such that one portion of the web can adhere to another portion of the web.
Claim 12
Dependent Claim
173 words
An elastomeric cohesive wrap comprising (1) a nonwoven elastomeric web having a first face and a second face comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than about 50 microns, the thermoplastic elastomeric small diameter fibers being selected from the group consisting of elastomeric polyurethanes, elastomeric polyesters, and elastomeric polyamides, and being randomly arrayed and bonded at points of contact such that the web has a machine direction tensile strength of at least about 30 g/2.5 cm width/g/m 2 basis weight, the tensile strength of the web in the direction of web formation is no greater than about 2.5 times the tensile strength of the web in a direction perpendicular to the direction of web formation, the web has multi-directional elastic properties, and the web recovers at least about 85% in the machine direction after being stretched 50% and (2) a self-adhesive coating adhered to at least a one face of the web such that one portion of the web can adhere to another portion of the web.
Claim 13
Dependent Claim
17 words
The nonwoven elastomeric web of claim 1 wherein said thermoplastic elastomeric small diameter fibers are elastomeric polyurethanes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |