GB2444054A - Biocidal cover - Google Patents
Biocidal cover Download PDFInfo
- Publication number
- GB2444054A GB2444054A GB0625119A GB0625119A GB2444054A GB 2444054 A GB2444054 A GB 2444054A GB 0625119 A GB0625119 A GB 0625119A GB 0625119 A GB0625119 A GB 0625119A GB 2444054 A GB2444054 A GB 2444054A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cover
- cover according
- biocidal
- sleeve
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000003115 biocidal effect Effects 0.000 title claims abstract description 23
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000012815 thermoplastic material Substances 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000002500 ions Chemical class 0.000 claims abstract description 3
- 239000011347 resin Substances 0.000 claims abstract description 3
- 229920005989 resin Polymers 0.000 claims abstract description 3
- 229910052709 silver Inorganic materials 0.000 claims abstract description 3
- 239000004332 silver Substances 0.000 claims abstract description 3
- 238000001125 extrusion Methods 0.000 claims description 2
- 229920000098 polyolefin Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000004800 polyvinyl chloride Substances 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 5
- 241000700605 Viruses Species 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 241000233866 Fungi Species 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 206010011409 Cross infection Diseases 0.000 description 2
- 208000031888 Mycoses Diseases 0.000 description 2
- 206010029803 Nosocomial infection Diseases 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 208000015181 infectious disease Diseases 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 206010017533 Fungal infection Diseases 0.000 description 1
- 208000002979 Influenza in Birds Diseases 0.000 description 1
- 206010041925 Staphylococcal infections Diseases 0.000 description 1
- 206010064097 avian influenza Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- -1 cationic silane quaternary ammonium salt Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 208000015688 methicillin-resistant staphylococcus aureus infectious disease Diseases 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/015—Biocides
-
- C08K3/005—
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/10—Metal compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0058—Biocides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B4/00—Shrinkage connections, e.g. assembled with the parts at different temperature; Force fits; Non-releasable friction-grip fastenings
- F16B4/006—Shrinkage connections, e.g. assembled with the parts being at different temperature
- F16B4/008—Shrinkage connections, e.g. assembled with the parts being at different temperature using heat-recoverable, i.e. shrinkable, sleeves
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
A biocidal cover, e.g. for a door handle 3, incorporates or is coated with a biocidal substance in the form of a resin which releases silver (Ag+) ions. The cover 4 is formed of a sleeve of extruded heat-shrink material, such as a thermoplastic material, such as polyvinyl chloride (PVC), which is applied by means of heat, e.g. using a hot air gun 5.
Description
Philip Reed
BIOCIDAL COVER
TECHNICAL FIELD OF THE INVENTION
This invention relates to the problem of reducing the everyday risk of cross-infection by micro-organisms.
BACKGROUND
Controlling the spread of diseases caused by bacteria, viruses and fungal infections is a major problem in hospitals, and indeed, in any other area to which people have access. Many bacterial diseases such as MRSA and certain strains of E. coli can prove to be fatal, and are easily acquired by direct skin contact with surfaces contaminated with the bacteria. Many viral diseases such as Norwalk and avian flu can also be propagated in a similar manner, as can a wide variety of fungal diseases.
Common hygiene advice aimed at reducing the spread of such diseases is to practice frequent hand washing, preferably using disinfecting solutions, but although this remains good practice it can never be completely effective no matter how diligently it is carried out. For example, if someone goes to the toilet in a restaurant and washes their hands as advised they can easily pick up new infections as they leave the toilet area. Cross-infection can also take place by sharing common items such as pens.
The present invention seeks to provide a new and inventive way of reducing the spread of infections through hand transmission.
SUMMARY OF THE INVENTION
The present invention proposes a cover comprising a sleeve of heat-shrink material which incorporates or is coated with a biocidal substance.
The cover may be applied to an article having an elongate gripping portion such as door handle or a pen, by sliding the cover over the elongate portion and applying heat to shrink the cover.
The biocidal substance is preferably incorporated into a thermoplastic material during extrusion of the sleeve, although the cover may also be treated with a suitable biocidal substance by impregnation or surface coating.
DEFINITIONS
In this specification the term "biocidal" means having the capability to harm or destroy at least one kind of microorganism, including (without limitation) bacteria, viruses and fungi.
BRIEF DESCRIPTION OF THE DRAWINGS
The following description and the accompanying drawings referred to therein are included by way of non-limiting example in order to illustrate how the invention may be put into practice. In the drawings: FKlure I is a general view of a door having a biocidal cover in accordance with the invention; Fkjure 2 is a side view of the cover during application to the door handle; and Figure 3 is a side view of a writing implement having a biocidal cover in accordance with the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
Fig. I shows one side of a door 1 which is hung in a doorway through which people can pass. By way of example, the invention may be applied to a toilet door, although it will be appreciated that the invention may advantageously be applied to any door, whether in a public building, in commercial premises, in the home, on board a ship, etc. It should also be noted that although only one side of the door is shown and described the invention may advantageously be applied to both sides of the door.
The door 1 is hung on hinges 2 and may be opened and closed in known manner using a door handle 3. In this example the handle is of the lever type, although the invention could also be applied to other kinds of handle having an elongate gripping portion, for example pull-type handles which are releasably secured to the door at both ends. It has been found that when using a door, hand contact is most frequently made directly with the door handle 3 during opening and closing of the door. In the present invention, a biocidal cover 4 is applied to the door handle 3. As shown in Fig. 2, the cover is of tubular form and comprises a length of extruded heat-shrink thermoplastic sleeve such as a polyolefin or PVC, which preferably has a shrink temperature of about 100 C, although sleeve with higher shrink temperatures can be used depending on the application.
The sleeve incorporates a biocidal additive such as Bactiglas, which is typically included in a proportion of 5 to 6% by weight. Bactiglas is based on a resin which releases silver (Ag ) ions, but other known biocidal thermoplastic additives may be used. Alternatively the cover may be externally coated with a material which inhibits the growth of micro-organisms such as a cationic silane quaternary ammonium salt which is sold under the name Aegis. In its unshrunk state the cover 4 is large enough to pass easily over the lever portion of the handle 3 and is of a length which is sufficient to cover most of the length of the handle. With some kinds of handle it may be necessary to remove the handle from the door before the sleeve is applied. When the cover is in place a hot air gun 5 or other heat source capable of producing a temperature of at least 100 C is used to heat the cover, e.g. working from one end to the other as shown, so that the cover shrinks in diameter and tightly grips the handle.
When anyone grips the cover 4 when using the handle 3 any bacteria, viruses or fungi transferred to the handle are rendered inactive.
The cover has an active biocidal life of several years. When required, the cover may easily be removed by slitting the cover along its length using a sharp knife, and a new biocidal cover may then be applied. Alternatively, the new cover may simply be heat-shrunk over the old one.
Fig. 3 shows another use of biocidal covers in accordance with the invention. In this case the cover is applied to a disposable writing implement such as a ball point or fibre tip pen, having an elongate body and a writing tip 11. The tubular cover 12 comprises a length of extruded heat-shrink thermoplastic sleeve having a shrink temperature of about 100 C, which incorporates a biocidal additive such as Bactiglas, although the cover may be externally coated with a material which inhibits the growth of micro-organisms. In its unshrunk state the cover 12 can be slid over the body 10 to cover most of its length. A hot air gun or other heat source is used to heat the cover so that the cover shrinks in diameter and tightly grips the pen. When anyone uses the pen any bacteria, viruses or fungi transferred to the cover 12 are destroyed. The active biocidal life of the cover exceeds the normal life of a disposable writing implement.
The biocidal sleeve can be produced in different diameters for application to articles of different sizes.
It will be appreciated that the features disclosed herein may be present in any embodiment of the invention in any feasible combination. Whilst the above description places emphasis on those areas which, in combination, are believed to be new, protection is sought for any inventive combination of the features disclosed herein.
* * * * * * * *
Claims (13)
1. A cover comprising a sleeve of heat-shrink material which incorporates or is coated with a biocidal substance.
2. A cover according to Claim 1 which is of elongate shape.
3. A cover according to Claim 1 or 2 which is formed of thermoplastic material.
4. A cover according to Claim 3 which is formed by an extrusion process.
5. A cover according to Claim 3 or 4 in which the biocidal substance is incorporated into the thermoplastic material.
6. A cover according to Claim 5 in which the biocidal substance comprises a resin which releases silver (Ag+) ions.
7. A cover according to Claim 5 or 6 in which the biocidal substance is included in the sleeve in a proportion of 5 to 6% by weight.
8. A cover according to any preceding claim in which the sleeve is formed from a polyolefin.
9. A cover according to any of Claims 1 to 7 in which the sleeve is formed from PVC.
10. A cover according to any preceding claim which is heat-shrunk onto an article having an elongate gripping portion.
11. A cover according to Claim 10 in which the article is a door handle.
12. A cover according to Claim 10 in which the article is a writing implement.
13. A cover which is substantially as described with reference to the drawings.
* * * * * * * *
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0711221A GB2444128A (en) | 2006-11-27 | 2007-06-11 | Biocidal cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GBGB0623567.5A GB0623567D0 (en) | 2006-11-27 | 2006-11-27 | Biocidal cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0625119D0 GB0625119D0 (en) | 2007-01-24 |
| GB2444054A true GB2444054A (en) | 2008-05-28 |
Family
ID=37636529
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0623567.5A Ceased GB0623567D0 (en) | 2006-11-27 | 2006-11-27 | Biocidal cover |
| GB0625119A Withdrawn GB2444054A (en) | 2006-11-27 | 2006-12-18 | Biocidal cover |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBGB0623567.5A Ceased GB0623567D0 (en) | 2006-11-27 | 2006-11-27 | Biocidal cover |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0623567D0 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2475028A (en) * | 2009-08-18 | 2011-05-11 | Richard Hugh Lawson | Microbial transmission blocking film for hard surfaces |
| DE102009050425A1 (en) * | 2009-10-22 | 2011-05-26 | BLüCHER GMBH | Covering for objects, in particular in public facilities and / or means of transport, for preventing transmission of infection |
| US20110146097A1 (en) * | 2009-12-19 | 2011-06-23 | Panno Jr Nicholas J | Artists relative measuring device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331072A (en) * | 1994-06-14 | 1995-12-19 | Shin Etsu Chem Co Ltd | Heat-shrinkable silicone rubber composition having antibacterial and antifungal activity |
| GB2297552A (en) * | 1995-02-03 | 1996-08-07 | Rainer Clover | Powder coating composition |
| JPH0959523A (en) * | 1995-08-17 | 1997-03-04 | Japan Synthetic Rubber Co Ltd | Antimicrobial and mildewproof resin composition |
| JP2000302616A (en) * | 1999-04-15 | 2000-10-31 | Toyo Ink Mfg Co Ltd | Antibacterial resin composition, antibacterial composition and molded product therefrom |
| GB2375766A (en) * | 2001-05-25 | 2002-11-27 | Lg Electronics Inc | PVC compositions containing one or more biocides |
| WO2003060003A1 (en) * | 2001-12-21 | 2003-07-24 | E.I. Du Pont De Nemours And Company | Antimicrobial solid surface materials containing chitosan-metal complexes |
-
2006
- 2006-11-27 GB GBGB0623567.5A patent/GB0623567D0/en not_active Ceased
- 2006-12-18 GB GB0625119A patent/GB2444054A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07331072A (en) * | 1994-06-14 | 1995-12-19 | Shin Etsu Chem Co Ltd | Heat-shrinkable silicone rubber composition having antibacterial and antifungal activity |
| GB2297552A (en) * | 1995-02-03 | 1996-08-07 | Rainer Clover | Powder coating composition |
| JPH0959523A (en) * | 1995-08-17 | 1997-03-04 | Japan Synthetic Rubber Co Ltd | Antimicrobial and mildewproof resin composition |
| JP2000302616A (en) * | 1999-04-15 | 2000-10-31 | Toyo Ink Mfg Co Ltd | Antibacterial resin composition, antibacterial composition and molded product therefrom |
| GB2375766A (en) * | 2001-05-25 | 2002-11-27 | Lg Electronics Inc | PVC compositions containing one or more biocides |
| WO2003060003A1 (en) * | 2001-12-21 | 2003-07-24 | E.I. Du Pont De Nemours And Company | Antimicrobial solid surface materials containing chitosan-metal complexes |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2475028A (en) * | 2009-08-18 | 2011-05-11 | Richard Hugh Lawson | Microbial transmission blocking film for hard surfaces |
| DE102009050425A1 (en) * | 2009-10-22 | 2011-05-26 | BLüCHER GMBH | Covering for objects, in particular in public facilities and / or means of transport, for preventing transmission of infection |
| CN102724867A (en) * | 2009-10-22 | 2012-10-10 | 布吕歇尔有限公司 | Coating for objects, in particular in public facilities and/or means of transportation, for preventing the transmission of infections |
| US20110146097A1 (en) * | 2009-12-19 | 2011-06-23 | Panno Jr Nicholas J | Artists relative measuring device |
| US8677641B2 (en) * | 2009-12-19 | 2014-03-25 | Nicholas J Panno, Jr. | Artists relative measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0625119D0 (en) | 2007-01-24 |
| GB0623567D0 (en) | 2007-01-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |