EP0358451A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Heat shrinkable bandage cover
Assignee: 3M Co
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Filing: 1989-09-05
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Granted: —
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Expires: 2009-09-05
Abstract
Abstract A protective covering of nonwoven fabric for an orthopedic cast, wound dressing or other bandage is disclosed. The covering is adapted to fit loosely about the bandage to be protected and is capable of being heat-shrunk at a relatively low temperature to closely cover the bandage. The covering is permeable to water vapor and air, it may be treated with a surface active agent to provide superior water and soil repellency, and it may be provided in various colors or with various decorative designs.
Inventors
- 👤 Dean A. C/O Minnesota Mining And Ersfeld
- 👤 Timothy C. C/O Minnesota Mining And Sandvig
- 👤 John F. C/O Minnesota Mining And Reed
- 👤 Paul E. C/O Minnesota Mining And Hansen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 11:22
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/04; A61F13/041; A61F15/00; A61F15/004
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
31 words
A covering for a bandage, which covering comprises a nonwoven web of heat-shrinkable fibers adapted to fit loosely about the bandage and capable of being heat-shrunk to closely cover the bandage.
Claim 2
Dependent Claim
31 words
A covering for a bandage, which covering comprises a nonwoven web of heat-shrinkable fibers adapted to fit loosely about the bandage and capable of being heat-shrunk to closely cover the bandage.
Claim 3
Dependent Claim
40 words
A covering according to claim 1 wherein the fibers comprises material selected from the group consisting of blends of polybutylene terephthalate and polyethylene terephthalate; ethylene/vinyl acetate copolymers; ethylene/acrylic acid copolymers; polyethylene terephthalate copolymers; polyester-polyether copolymers; ethylene/propylene copolymers and blends thereof.
Claim 4
Dependent Claim
14 words
A covering according to claim 1 wherein the nonwoven web comprises oriented melt-blown fibers.
Claim 5
Dependent Claim
20 words
A covering according to claim 3 wherein the fibers comprise a copolymer of terephthalic acid, ethylene glycol and diethylene glycol.
Claim 6
Dependent Claim
17 words
A covering according to claim 1, wherein the covering is treated with a water and/or soil repellent.
Claim 7
Dependent Claim
20 words
A covering according to claim 5 wherein the treated covering exhibits a surface energy of less than about 40 erg/cm².
Claim 8
Dependent Claim
25 words
A covering according to claim 5 wherein the repellent comprises about 0.01 weight percent to 10 weight percent of the total weight of the covering.
Claim 9
Dependent Claim
23 words
A covering according to claim 1 wherein the web is capable of being heat-shrunk at a temperature between about 45°C and about 60°C.
Claim 10
Dependent Claim
18 words
A covering according to claim 1 wherein the nonwoven web has air permeability of at least 50 cc/sec.
Claim 11
Dependent Claim
27 words
A method of covering a bandage comprising placing over the bandage a covering according to claim 1 and heat shrinking the covering to closely cover the bandage.
References Cited (Backward Citations)
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