GB2267054A - Waterproofing membrane - Google Patents

Waterproofing membrane Download PDF

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Publication number
GB2267054A
GB2267054A GB9211005A GB9211005A GB2267054A GB 2267054 A GB2267054 A GB 2267054A GB 9211005 A GB9211005 A GB 9211005A GB 9211005 A GB9211005 A GB 9211005A GB 2267054 A GB2267054 A GB 2267054A
Authority
GB
United Kingdom
Prior art keywords
sheet
adhesive
waterproofing membrane
regions
waterproofing
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.)
Granted
Application number
GB9211005A
Other versions
GB9211005D0 (en
GB2267054B (en
Inventor
Edward E Hankins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Premier Coatings Ltd
Original Assignee
Premier Coatings Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Premier Coatings Ltd filed Critical Premier Coatings Ltd
Priority to GB9211005A priority Critical patent/GB2267054B/en
Publication of GB9211005D0 publication Critical patent/GB9211005D0/en
Publication of GB2267054A publication Critical patent/GB2267054A/en
Application granted granted Critical
Publication of GB2267054B publication Critical patent/GB2267054B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/148—Fastening means therefor fastening by gluing
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
    • F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
    • F16L55/1686—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by winding a tape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B32B2323/043—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B32B2323/046—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2327/00—Polyvinylhalogenides
    • B32B2327/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate

Abstract

A waterproofing membrane for waterproofing a joint between two members comprises a first sheet of synthetic resinous material having adhesive material on at least two spaced parallel edge regions thereof, and a second sheet overlying the adhesive layer, the second sheet being treated at least in the areas which engage the adhesive material so that the second sheet can be removed to leave the two regions of adhesive separated by a non-adhesive region. The membrane may be formed by forming a sheet of polyester which provides said second sheet with two spaced lines of perforations and then coating the sheet with release material in its marginal regions located outboard of the two lines of perforations, the coated polyester sheet then being coated with a bituminous rubber adhesive, a sheet of impervious synthetic resinous material then being applied to the exposed face of the adhesive layer, thus providing the first sheet of the waterproofing membrane, the two marginal regions of release material coated polyester sheet then being removed. The membrane is for use in waterproofing a joint between two members which may move slightly relative to each other.

Description

WATERPROOFING MEMBRANE This invention relates to a waterproofing membrane for waterproofing a joint between two members where there may be a small amount of relative movement between the members after they have been joined together. The membrane is particularly useful for forming a waterproof seal between two slabs of concrete or around the exterior of joints in large pipelines and the like, but it can obviously have many other uses.
The invention is ideally suited for incorporation in tapes which can be stored in roll form, but is not so limited.
According to the present invention, we provide a waterproofing membrane for waterproofing a joint between two members comprising a first sheet of synthetic resinous material having adhesive material on at least two spaced parallel edge regions thereof, and a second sheet overlying the adhesive layer, the second sheet being treated at least in the areas which engage the adhesive material so that the second sheet can be removed to leave the two regions of adhesive separated by a non-adhesive region.
Preferably, the first sheet of synthetic resinous material has an adhesive layer on the whole of one face thereof and the second sheet overlying the adhesive layer has marginal regions connected to a central region by lines of weakness, the marginal regions being treated on their inner face with the release material but the central region not being so treated, whereby the marginal regions can be removed to leave two adhesive edge regions on the first sheet separated by a non-adhesive central area.
Preferably the first sheet is formed of polyvinylchloride, high density polyethylene, low density polyethylene or polypropylene or polyester and the adhesive layer is formed by a bituminous rubber compound and the second sheet is formed of a material which does not degrade when wet, such as waxed paper, polyester, high density polyethylene or another plastics or paper reinforced plastics material.
It is also preferred that the outer face of the first sheet is coated with a release material such as silicone.
Preferably the membrane is in the form of a tape and in a typical configuration the tape may be about 220mm wide with the central region being in the range of 50-75mm wide and the marginal regions being about 75mm wide.
Preferably the waterproofing membrane is formed from a sheet of polyester which provides said second sheet, the polyester sheet having two spaced lines of perforations formed therein and then being coated with release material, such as silicone, in its marginal regions located outboard of the two lines of perforations in known manner. The coated polyester sheet is then coated with a bituminous rubber adhesive at a temperature of about 130 0C to provide said adhesive layer, whereupon the coated polyester sheet is cooled to about 60 C. Cooling may be achieved by passing over a cooling bed or by spraying water from the underside and while the adhesive is still at about 600C, a sheet of impervious synthetic resinous material is applied to the exposed face of the adhesive layer, thus providing the first sheet of the waterproofing membrane.
It would also be possible to manufacture the waterproofing membrane by taking a sheet of polyester which provides the second sheet and then coating the whole sheet with release material and subsequently applying the bituminous rubber adhesive just onto the edge regions, then cooling the adhesive to about 60 C and lastly applying an impervious synthetic resin sheet to the exposed faces of the adhesive to provide the first sheet. When the release layer is peeled off for use, a product equivalent to that disclosed above would result. This however would be difficult to manufacture and use, because of the thickness of the adhesive relative to the sheet materials, and because of the resultant instability of the membrane, due to there being no adhesive in a central region of the first sheet.
The preferred embodiment of waterproofing membrane is used by removing the two marginal regions of release material coated polyester sheet to expose the adhesive on the edge regions of the first sheet. This removal may be facilitated by using a strip of adhesive, e.g. double-sided adhesive tape, which has been applied lengthwise to a portion of the surface of a cylindrical member, and then offering the exposed strip of adhesive on the cylindrical member to the tape of the invention transversely at its end so as only to adhere the end portions of the marginal regions of the release material to the adhesive.The two marginal regions of release material coated polyester sheet can then be separated from the uncoated central region along the lines of perforations by rotating the cylindrical member about its longitudinal axis and this will peel back uniformly the marginal regions of release material leaving the two adhesive edge regions of the waterproofing membrane of the invention exposed. The waterproofing membrane can then be applied across a joint between two membes or bodies, with the adhesive to either side of the central non-adhesive region being secured to the respective members or bodies, and the central bridging the joint per se.
The use of the twin sided adhesive tape enables a quick, regular removal of the marginal regions to take place, thus allowing the waterproofing membrane to be applied over the joint. This results in the joint being waterproofed, with the central masked area of adhesive overlying the joint (thus allowing expansion and retraction without damaging the membrane) but the membrane will be adhered to the two members to either side of the joint.
It is preferred that, before the waterproofing membrane is applied to the joint to be waterproofed, a conventional primer is coated onto the surfaces to be joined by the membrane. This may, for example, comprise bitumen in a solvent or a resin in a rubber solution. This will improve the adhesion of the waterproofing membrane to the two members.
It has been found that if the waterproofing membrane is wound with the double-sided tape onto a cylinder as described above, its application to a joint between two members to be waterproofed is aided. In particular, removal of the marginal regions of release material is facilitated since straight tearing along the perforations or lines of weakness is easily achieved as the membrane is unwound from the roll.
Once one or more layers of waterproofing membrane according to the invention have been applied over a joint between two members to be waterproofed, it is preferred that another waterproof layer be applied over the top of the previously waterproofed joint. This other layer is preferably also in the form of a self-adhesive or other type of waterproof membrane (although it could be in the form of a liquid) and should be so applied as completely to cover the waterproofing membrane of this invention and adjacent regions of the members to which the waterproofing membrane of the invention has been applied. Very often, of course, large sheets of waterproofing membrane will be used for this purpose, so as fully to waterproof the structure having the previously waterproofed joint(s).By applying release material, e.g. silicone, to the outer face of the membrane of the invention, the overall waterproofing membrane will not adhere to the top or outer face of the membrane(s) of the invention. This improves the chances of there being no breakdown of the waterproofing in the joint region(s).
It has been found that, by waterproofing a joint between two members using the waterproofing membrane of the present invention, relative movement between the two members of up to a few millimetres can be accompanied, e.g. due to expansion and retraction, due to the presence of the nonadhesive central area of the waterproofing membrane.
However, if the non-adhesive central area is not provided it has been found that failure will occur in the region of the joint.
It will of course be understood that the present invention has been described above purely by way of example, and modifications of detail can be made within the scope of the invention.

Claims (16)

CLAIMS:
1. A waterproofing membrane for waterproofing a joint between two members comprising a first sheet of synthetic resinous material having adhesive material on at least two spaced parallel edge regions thereof, and a second sheet overlying the adhesive layer, the second sheet being treated at least in the areas which engage the adhesive material so that the second sheet can be removed to leave the two regions of adhesive separated by a non-adhesive region.
2. A waterproofing membrane according to claim 1 wherein the first sheet of synthetic resinous material has an adhesive layer on the whole of one face thereof.
3. A waterproofing membrane according to claim 2 wherein the second sheet overlying the adhesive layer has marginal regions connected to a central region by lines of weakness, the marginal regions being treated on their inner face with the release material but the central region not being so treated, whereby the marginal regions can be removed to leave two adhesive edge regions on the first sheet separated by a non-adhesive central area.
4. A waterproofing membrane according to claim 1, 2 or 3 wherein the first sheet is formed of polyvinylchloride, high density polyethylene, low density polyethylene or polypropylene or polyester.
5. A waterproofing membrane according to- any one of claims 1 to 4 wherein the adhesive layer is formed by a bituminous rubber compound.
6. A waterproofing membrane according to any one of claims 1 to 5 wherein the second sheet is formed of a material which does not degrade when wet.
7. A waterproofing membrane according to claim n wherein the material is polyester, high density polyethylene or another plastics or paper reinforced plastics material.
8. A waterproofing membrane according to any one of claims 1 to 7 wherein the outer face of the first sheet is coated with a release material.
9. A waterproofing membrane according to any one of claims 1 to 8 wherein the membrane is in the form of a tape.
10. A waterproofing membrane according to claim 9 wherein the tape is about 220mm wide with the central region being in the range of 50-75mm wide and the marginal regions being about 75mm wide.
11. A waterproofing membrane substantially as hereinbefore described.
12. A method of forming a waterproofing membrane according to claim 1 wherein a sheet of polyester which provides said second sheet has two spaced lines of perforations formed therein and is then coated with release material in its marginal regions located outboard of the two lines of perforations, the coated polyester sheet then being coated with a bituminous rubber adhesive wherein a sheet of impervious synthetic resinous material is applied to the exposed face of the adhesive layer, thus providing the first sheet of the waterproofing membrane, the two marginal regions of release material coated polyester sheet then being removed.
13. A method according to claim 12 wherein the adhesive is applied at a temperature of about 130 0C to provide said adhesive layer, whereupon the coated polyester sheet is cooled to about 60 C.
14. A method according to claim 13 wherein cooling is achieved by spraying water from the underside.
15. A method according to claim 14 wherein removal is facilitated by using a strip of double-sided adhesive tape, which has been applied lengthwise to a portion of the surface of a cylindrical member, the exposed strip of adhesive on the cylindrical member then being offered to the tape transversely at its end so as only to adhere the end portions of the marginal regions of the release material to the adhesive, the two marginal regions of release material coated polyester sheet can then be separated from the uncoated central region along the lines of perforations by rotating the cylindrical member about its longitudinal axis to peel back uniformly the marginal regions of release material leaving the two adhesive edge regions of the waterproofing membrane of the invention exposed.
16. A method of forming a waterproofing membrane substantially as hereinbefore described.
GB9211005A 1992-05-22 1992-05-22 Waterproofing membrane Expired - Fee Related GB2267054B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9211005A GB2267054B (en) 1992-05-22 1992-05-22 Waterproofing membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9211005A GB2267054B (en) 1992-05-22 1992-05-22 Waterproofing membrane

Publications (3)

Publication Number Publication Date
GB9211005D0 GB9211005D0 (en) 1992-07-08
GB2267054A true GB2267054A (en) 1993-11-24
GB2267054B GB2267054B (en) 1995-11-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
GB9211005A Expired - Fee Related GB2267054B (en) 1992-05-22 1992-05-22 Waterproofing membrane

Country Status (1)

Country Link
GB (1) GB2267054B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2244309A1 (en) * 2004-02-02 2005-12-01 Javier Leache Aristu Water-proofing cover system for connectors of plates has adhesive laminar tape for enclosing connectors of plates

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1106342A (en) * 1964-04-14 1968-03-13 Permanite Ltd Water impervious sheet material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1106342A (en) * 1964-04-14 1968-03-13 Permanite Ltd Water impervious sheet material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2244309A1 (en) * 2004-02-02 2005-12-01 Javier Leache Aristu Water-proofing cover system for connectors of plates has adhesive laminar tape for enclosing connectors of plates

Also Published As

Publication number Publication date
GB9211005D0 (en) 1992-07-08
GB2267054B (en) 1995-11-15

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970522