EP0286426A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Non-fraying substrate for use in an orthopaedic casting bandage and a process for its preparation
Assignee: Smith and Nephew Inc
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Filing: 1988-04-08
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Granted: —
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Expires: 2008-04-08
Abstract
Abstract A resin-coated, knitted glass fibre substrate is prevented from fraying at a cut end by the presence at the said cut end of a polymer strip. The substrate is preferably coated with a water curable resin whereby the coated substrate can be used as an orthopaedic bandage. Processes for applying the polymer strip to the resin-coated substrate are also described.
Inventors
- 👤 Keith Alexander Papulski
- 👤 John Kenneth Hicks
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 06:47
CPC Classifications
D; D06; D06H; D06H7/00; D06H7/22; A; A61; A61F; A61F13/00; A61F13/04; A61L; A61L15/00; A61L15/07
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
26 words
A resin-coated, knitted glass fibre substrate which is prevented from fraying at a cut end by the presence at the said end of a polymer strip.
Claim 2
Dependent Claim
26 words
A resin-coated, knitted glass fibre substrate which is prevented from fraying at a cut end by the presence at the said end of a polymer strip.
Claim 3
Dependent Claim
41 words
A resin-coated, knitted glass fibre substrate according to claim 1 in which the strip is from 3 to 10mm wide and is present at a weight per unit length of substrate of from 0.02 to 0.1g per cm of the substrate.
Claim 4
Dependent Claim
20 words
A resin-coated, knitted glass fibre substrate according to claim 1 in which the strip is formed from a thermoplastic polymer.
Claim 5
Dependent Claim
21 words
A resin-coated knitted glass fibre substrate according to claim 1 in which the strip is formed from a hot melt adhesive.
Claim 6
Dependent Claim
19 words
A resin-coated, knitted glass fibre substrate according to claim 1 in which the resin is an isocyanate-terminated polyurethane prepolymer.
Claim 7
Dependent Claim
35 words
A resin-coated, knitted glass fibre substrate according to claim 1 in which the polymer strip has been applied by impregnating the resin-coated substrate with a strip of the polymer and then cutting through the polymer.
Claim 8
Dependent Claim
20 words
A resin-coated, knitted glass fibre substrate according to claim 6 the polymer strip is applied as a hot melt coating.
Claim 9
Dependent Claim
33 words
A resin-coated, knitted glass fibre substrate according to claim 6 in which the polymer strip is applied as a solution of the polymer in a volatile organic solvent and then removing the solvent.
Claim 10
Dependent Claim
22 words
A resin-coated, knitted glass fibre substrate according to claim 6 in which the substrate is cut by means of a sonic knife.
Claim 11
Independent Claim
39 words
A method of preventing the cut ends of a resin-coated, knitted glass fibre substrate from fraying which method comprises impregnating the resin-coated glass fibre substrate with a strip of polymeric material and then cutting the substrate through the strip.
Claim 12
Independent Claim
39 words
A method of preventing the cut ends of a resin-coated, knitted glass fibre substrate from fraying which method comprises impregnating the resin-coated glass fibre substrate with a strip of polymeric material and then cutting the substrate through the strip.
Claim 13
Dependent Claim
16 words
A method according to claim 10 in which the strip is formed from a thermoplastic polymer.
Claim 14
Dependent Claim
17 words
A method according to claim 11 in which the strip is applied as a hot melt coating.
Claim 15
Dependent Claim
34 words
A method according to claim 12 in which the strip is from 8 to 15mm wide and is impregnated at a weight of from 0.05 to 0.25g per 2.5cm of the width of substrate.
Claim 16
Dependent Claim
16 words
A method according to claim 11 in which the cut is made by an ultrasonic knife.
Claim 17
Dependent Claim
39 words
A method according to claim 11 in which the strip is applied by dissolving the thermoplastic polymer in a volatile organic solvent, painting or spraying the solution onto the resin-coated substrate and removing the solvent to form the strip.
Claim 18
Dependent Claim
19 words
A method according to claim 10 in which the resin is a cold water curable isocyanate terminated polyurethane prepolymer.
References Cited (Backward Citations)
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