GB2387850A - Recycled polyvinyl butyral - Google Patents
Recycled polyvinyl butyral Download PDFInfo
- Publication number
- GB2387850A GB2387850A GB0209168A GB0209168A GB2387850A GB 2387850 A GB2387850 A GB 2387850A GB 0209168 A GB0209168 A GB 0209168A GB 0209168 A GB0209168 A GB 0209168A GB 2387850 A GB2387850 A GB 2387850A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sheet
- polyvinyl butyral
- mixer
- filler
- pigment
- 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- Withdrawn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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
- B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2029/00—Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals or derivatives thereof as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
- B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/778—Windows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/778—Windows
- B29L2031/7782—Glazing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2329/00—Characterised by the use 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 an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2329/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
A device, including a recycled polymeric material comprising polyvinyl butyral, the polyvinyl butyral preferably being reclaimed from laminated windscreens. The polyvinyl butyral may be mixed with a filler, such as an inorganic filler, and a pigment. The device may be formed into a sheet, such as a waterproof membrane, having an extension retained preferably by freezing. Also claimed is a method of making the device, the method comprising mixing the polyvinyl butyral and optionally forming the mixture into a sheet.
Description
1 2387850
A RECYCLABLE DEVICE AND METHOD
The invention relates to a recyclable device and method for producing same.
Environmental considerations are generally to the fore in all aspects of manufacture of any manner of devices, and waterproofing is no exception. It has become a requirement to use recycled materials in producing all kinds of device. According to a first aspect of the invention there is provided a device, comprising a recycled polymeric material, suitable a recycled plasticised polyvinyl butyral. The polyvinyl butyral may preferably be reclaimed from laminated windscreens. This provides a suitable material that can be recycled to provide a desired device.
The polyvinyl butyral may be mixed with a filler, suitably an inorganic filler.
This provides a suitable material, particularly when there is in addition a pigment or pigments. This can provide a suitable colour of device.
There may be a mixture of polyvinyl butyral, an inorganic filler, a pigment and process aids formed into a sheet. This provides a device which can be used in a variety of applications, the sheet being preferably formed in a sheet forming apparatus.
The sheet may be conditioned to have a retained extension, for example the extension being retained by freezing. This provides for retension of size
parameters during use, particularly when the device is a waterproof membrane. According to a second aspect of the invention, there is provided a method of making a device as hereinbefore defined, comprising the steps of separating polyvinyl butyral (PVB) from laminated windscreens, mixing the PVB with a filler, a pigment, and a process aid, heating and compounding the mixture in a hot-melt mixer, and forming the compounded mixture into a sheet. This is an efficient recyclable use of PVB. The hot-melt mixer may comprise an internal mixer, such as an excluder or Banbury mixer. The compounded mixture may be formed into a sheet by apparatus selected from calendar rolls, a roller die and a slit die. These each provide an efficient sheet forming apparatus. The sheet may have an extension memory applied thereto, suitably the extension memory may be applied by freezing the sheet in an extended state.
This provides for non-shrinkage of the material in use.
A waterproof membrane is a device embodying the membrane which can be formed to be environmentally acceptable by using reclaimed and recyclable materials which would otherwise be detrimental to the environment.
Windscreens or windshields of vehicles are usually made of a laminate of sheets of glass and/or plastic and through obsolescence accidents or Otherwise are often disposed of in say a breaker's yard.
A material present in such laminated windscreens is the polymer plasticised polyvinal butyral (PVB).
In the invention, PVB separated from laminated windscreens is cycled to form a device in the form of a waterproof membrane by being combined in the preferred embodiment with a filler such as an inorganic filler, a pigment or pigments and process aids such as stearates to enhance mixing. The combination is then mixed and compounded in a hot-melt internal mixer such as an extruder or Banbury mixer, and is then converted into a sheet by passing the mixed and compounded mixture through sheet forming apparatus such as calendar rolls, a roller die or a slit die. The extrudant in the form of a sheet can then be used for damp-proof and other waterproofing applications, for example as a damp-proof course, on a roof, or as tanking.
The invention thus provides a waterproof membrane which uses recycled PVB which would otherwise be detrimental to the environment by removing that PVB from the "disposed" chain. Moreover, the danp-proof membrane embodying the invention can be used as such even though the PVB absorbs water, as, in situ in a wall day, it is hidden, so aesthetic considerations doe not come into play, while it also absorbs moisture, which can enhance its damp-proofing qualities. Moreover, during the method used for manufacturing the sheet, the material can be extended beyond its usual yield limit and freezes as by being cooled so that the "memory" of its normal size parameter is frozen. When installed in a wall, say, as a dpc, the material cannot shrink as it could do under certain conditions and so retains desired parameters to act as a dpc over a range of ambient conditions.
Claims (20)
1. A device, including a recycled polymeric material, comprising polyvinyl butyral.
2. A device according to claim 1, the polyvinyl butyral being reclaimed from laminated windscreens.
3. A device according to claim 2, the polyvinyl butyral being mixed with a filler.
4. A device according to claim 3, the filler comprising an inorganic filler.
5. A device according to claim 3 or claim 4, there being in addition a pigment.
6. A device according to claim 5, comprising a mixture of polyvinyl butyral, an inorganic filler, a pigment and process aids, formed into a sheet.
7. A device according to claim 6, formed into a sheet in a sheet forming apparatus.
8. A device according to claim 6 or claim 7, the sheet being conditioned to have a retained extension.
s
9. A device according to claim 8, the extension being retained by freezing.
10. A device according to arty preceding claim, comprising a waterproof membrane.
11. A method of making a device according to any preceding claim, comprising the step of separating polyvinyl butyral (PVB) Dom laminated windscreens, mixing the PVB with a filler, a pigment and a process and heating and compounding the mixture in a hot-melt mixer, and forming the compounded mixture into a sheet.
12. A method according to claim 11, the hot-melt mixer comprising an internal mixer.
13. A method according to claim 12, the mixer comprising an extruder.
14. A method according to claim 12, the mixer comprising a Banbury mixer.
15. A method according to any of claims 11 to 14, the compounded mixture being formed into a sheet by apparatus selected from calendar rolls, a roller die and a slit die.
16. A method according to any of claims 11 to 15, the sheet having an extension memory applied thereto.
17. A method according to claim 16, the extension memory being applied by freezing the sheet in an extended state.
18. A waterproof membrane such as a damp-proof course, formed by a method according to any of claims 11 to 17.
19. A device according to claim 1, substantially as hereinbefore described.
20. A method according to claim 11, substantially as hereinbefore described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0209168A GB2387850A (en) | 2002-04-22 | 2002-04-22 | Recycled polyvinyl butyral |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0209168A GB2387850A (en) | 2002-04-22 | 2002-04-22 | Recycled polyvinyl butyral |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0209168D0 GB0209168D0 (en) | 2002-05-29 |
| GB2387850A true GB2387850A (en) | 2003-10-29 |
Family
ID=9935275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0209168A Withdrawn GB2387850A (en) | 2002-04-22 | 2002-04-22 | Recycled polyvinyl butyral |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2387850A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1550537A1 (en) * | 2004-01-05 | 2005-07-06 | Fuji Jukogyo Kabushiki Kaisha | Method for processing polyvinyl butyral resin and method for reusing laminated glass |
| CN101845186A (en) * | 2010-06-11 | 2010-09-29 | 郑州大学 | Modified polyvinyl butyral waterproof coiled material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0471658A2 (en) * | 1990-08-13 | 1992-02-19 | Monsanto Company | Use of recovered PVB in the manufacture of flooring |
| WO1993002141A1 (en) * | 1991-07-23 | 1993-02-04 | E.I. Du Pont De Nemours And Company | Recycling of polyvinylbutyral |
| EP0543794A1 (en) * | 1991-11-21 | 1993-05-26 | Monsanto Company | Molding compositions |
| WO1999057196A1 (en) * | 1998-05-06 | 1999-11-11 | E.I. Du Pont De Nemours And Company | Polymer blends of polyvinyl butyral with polyvinyl chloride |
| WO2001021367A1 (en) * | 1999-09-22 | 2001-03-29 | Sd-Konsult Stein Fr. Dietrichson | Construction material comprising recycled pvb (polyvinyl butyral) |
-
2002
- 2002-04-22 GB GB0209168A patent/GB2387850A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0471658A2 (en) * | 1990-08-13 | 1992-02-19 | Monsanto Company | Use of recovered PVB in the manufacture of flooring |
| WO1993002141A1 (en) * | 1991-07-23 | 1993-02-04 | E.I. Du Pont De Nemours And Company | Recycling of polyvinylbutyral |
| EP0543794A1 (en) * | 1991-11-21 | 1993-05-26 | Monsanto Company | Molding compositions |
| WO1999057196A1 (en) * | 1998-05-06 | 1999-11-11 | E.I. Du Pont De Nemours And Company | Polymer blends of polyvinyl butyral with polyvinyl chloride |
| WO2001021367A1 (en) * | 1999-09-22 | 2001-03-29 | Sd-Konsult Stein Fr. Dietrichson | Construction material comprising recycled pvb (polyvinyl butyral) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1550537A1 (en) * | 2004-01-05 | 2005-07-06 | Fuji Jukogyo Kabushiki Kaisha | Method for processing polyvinyl butyral resin and method for reusing laminated glass |
| CN101845186A (en) * | 2010-06-11 | 2010-09-29 | 郑州大学 | Modified polyvinyl butyral waterproof coiled material |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0209168D0 (en) | 2002-05-29 |
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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) |