EP0341875B1
Expired / Lapsed
EP
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Elastomeric adhesive and cohesive materials
Assignee: 3M Co
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Filing: 1989-04-28
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Granted: 1993-11-24
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Expires: 2009-04-28
Abstract
No abstract record available.
Inventors
- 👤 Daniel E. Meyer
- 👤 John E. Riedel
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 09:46
CPC Classifications
A; A61; A61F; A61F13/00; D; D04; D04H; D04H1/00; D04H1/40; D04H1/54; D04H1/56; A61F13/02; A61F13/0203; A61F13/0226; A61F13/0273
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
103 words
A nonwoven elastomeric web comprising thermoplastic elastomeric melt blown small diameter fibers having a diameter of less than 50 µm (microns), characterized in that the small diameter fibres are randomly arrayed and bonded at points of contact, the tensile strength of the web in the direction of web formation, is no greater than 2.5 times the tensile strength of the web in a direction perpendicular to the direction of web formation, the web has a machine direction tensile strength of at least 30 g/2.5 cm width/g/m² basis weight, and the web recovers at least 85% in the machine direction after being stretched 50%.
Claim 2
Dependent Claim
39 words
The nonwoven elastomeric web of claim 1 wherein said thermoplastic elastomeric small diameter fibers comprise elastomeric polyurethanes, elastomeric polyesters, elastomeric polyamides and elastomeric A-B-A' block copolymers wherein A and A' are styrenic moieties and B is an elastomeric midblock.
Claim 3
Dependent Claim
23 words
The nonwoven elastomeric web of any preceding claim wherein the elastomeric small diameter fibers have diameters of from 5µm (microns) to 30µm (microns).
Claim 4
Dependent Claim
27 words
The nonwoven elastomeric web of any preceding claim wherein the basis weight of the nonwoven elastomeric web is in the range of from 15 to 150 grams/m².
Claim 5
Dependent Claim
20 words
The nonwoven elastomeric web of any preceding claim wherein the web has an elongation at break of at least 250%.
Claim 6
Dependent Claim
28 words
The nonwoven elastomeric web of any preceding claim wherein the web has a machine direction force at 50% elongation of at least 5 g/2.5 cm width/g/m² basis weight.
Claim 7
Dependent Claim
27 words
The nonwoven elastomeric web of any preceding claim wherein the web has a recovery force at 50% elongation of at least 1.2 g/2.5 cm width/g/m² basis weight.
Claim 8
Dependent Claim
23 words
The nonwoven elastomeric web of any preceding claim wherein the web recovers at least 80% in the cross direction after being stretched 50%.
Claim 9
Dependent Claim
43 words
An adhesive dressing comprising (1) the nonwoven elastomeric web of any preceding claim having a first face, (2) a pressure-sensitive adhesive on the first face of the web, and (3) a low adhesion back size coating on the second face of the web.
Claim 10
Dependent Claim
45 words
An elastomeric cohesive wrap comprising (1) the nonwoven elastomeric web of any preceding claim having a first face,(2) a self-adhesive coating adhered to at least one face of the web such that one portion of the web can adhere to another portion of the web.
References Cited (Backward Citations)
No citation records indexed.
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