GB2343410A - A lid for a tank - Google Patents
A lid for a tank Download PDFInfo
- Publication number
- GB2343410A GB2343410A GB9824446A GB9824446A GB2343410A GB 2343410 A GB2343410 A GB 2343410A GB 9824446 A GB9824446 A GB 9824446A GB 9824446 A GB9824446 A GB 9824446A GB 2343410 A GB2343410 A GB 2343410A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lid
- layer
- inner layer
- outer layer
- intermediate layer
- 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- Withdrawn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
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000011810 insulating material Substances 0.000 claims abstract description 23
- 229920003023 plastic Polymers 0.000 claims abstract description 21
- 239000004033 plastic Substances 0.000 claims abstract description 21
- 239000012779 reinforcing material Substances 0.000 claims abstract description 19
- 239000006260 foam Substances 0.000 claims abstract description 12
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 6
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 6
- 239000011490 mineral wool Substances 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 21
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 9
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 8
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 239000004416 thermosoftening plastic Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000011152 fibreglass Substances 0.000 claims description 6
- 239000000835 fiber Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 239000003365 glass fiber Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
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
- B32B19/00—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica
- B32B19/04—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material
- B32B19/045—Layered products comprising a layer of natural mineral fibres or particles, e.g. asbestos, mica next to another layer of the same or of a different material of synthetic resin
-
- 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
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
-
- 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
- B32B27/065—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 foam
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
- E03B11/02—Arrangements or adaptations of tanks for water supply for domestic or like local water supply
-
- 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
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/08—Reinforcements
-
- 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
- B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
- B32B2315/14—Mineral wool
-
- 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
- B32B2435/00—Closures, end caps, stoppers
- B32B2435/02—Closures, end caps, stoppers for containers
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Laminated Bodies (AREA)
Abstract
A lid (2) for a tank, which lid comprises an inner layer (4) of a plastics sheet material, an intermediate layer (6) of an insulating material, and an outer layer (8) of a reinforcing material, the lid (2) being such that the intermediate layer (6) is adhered to the inner layer (4), and the outer layer (8) is adhered to the intermediate layer (6). The layer (4) may be polyvinyl chloride, the intermediate layer (6) may be foam or mineral wool and the outer layer (8) may be a fibre reinforced material.
Description
A LID FOR A TANK AND METHOD OF PRODUCING
THE LID
This invention relates to a lid for a tank. The tank is preferably a water tank for use in premises, but the tank may be another type of tank if desired so that, for example, the tank may be a tank for holding chemicals. The invention also relates to a method of producing the lid for the tank.
Especially in the case of water tanks in lofts, a lid is employed mainly to prevent dust or debris settling on the water in the tank, and to insulate the tank.
Conventional lids for water tanks are made off site using a mould. The lids are usually known as fibre reinforced plastics lids or glass fibre reinforced plastics lids.
They are traditionally made by providing a gel coat on the mould, providing glass fibre on the gel coat, providing foam insulation on the glass fibre, and then providing an outer layer of glass fibre on the foam insulation. The preparation of such lids is disadvantageous in that a mould needs to be used, and prepared for receiving the gel coat.
A further disadvantage is that, if the gel coat is not correctly applied, then the gel coat may have imperfections in it and/or air can get behind the gel coat. Still further, moulds used in the preparation of the lids are tied up and not available for re-use until such time as the gel coat has cured. This may be from ten-twenty four hours.
A further considerable problem with known lids for water tanks is that the water tanks are usually provided in lofts or similar places where access to the water tank is restricted. In many new buildings, the tanks and their lids are installed prior to ceilings underneath the tanks being completed. Once the ceilings are completed, access openings left for accessing the tanks are often smaller than the size of the tanks. In such circumstances, it is often not possible to get lids through the access openings, for example, for tanks that do not have lids or for tanks that need new lids. The known lids prepared using the moulds as described above are just too big for the access openings.
It is an aim of the present invention to obviate or reduce the above mentioned problems.
Accordingly, in one non-limiting embodiment of the present invention there is provided a lid for a tank, which lid comprises an inner layer of a plastics sheet material, an intermediate layer of an insulating material, and an outer layer of a reinforcing material, the lid being such that the intermediate layer is adhered to the inner layer, and the outer layer is adhered to the intermediate layer.
Preferably, the lid is one in which the outer layer is also adhered to the inner layer, the outer layer then being such that it encapsulates the intermediate layer.
The lid may be one in which the inner layer includes at least one flange and/or at least one access aperture.
Thus the lid may be provided with flanges and/or access apertures as appropriate for any situation.
In another non-limiting embodiment of the present invention there is provided a method of producing a lid for a tank, which method comprises providing an inner layer of a plastics sheet material, adhering an intermediate layer of an insulating material to the inner layer, and adhering an outer layer of a reinforcing material to the intermediate layer.
Preferably, the method is one in which the outer layer is also adhered to the inner layer, the outer layer then being such that it encapsulates the intermediate layer.
The method may include providing the inner layer with at least one flange and/or at least one access aperture.
The plastics sheet material is preferably a thermoplastics sheet material. Other materials may however be employed. A presently preferred thermo-plastics sheet material is polyvinyl chloride. Other types of thermoplastics sheet material may however be employed.
The insulating material of the intermediate layer may be adhered to the plastics sheet material of the inner layer with an adhesive. Any suitable and appropriate type of adhesive may be employed.
The insulating material may be a foam insulating material or mineral wool. The foam insulating material will usually be a plastics foam insulating material. The plastics foam insulating material may be a closed cell plastics foam insulating material, or an open cell plastics foam insulating material. Any suitable and appropriate type of insulating material may be employed.
The reinforcing material of the outer layer may be a curable reinforcing material which adheres to the intermediate layer. The curable reinforcing material may be a fibre reinforced plastics material, or a glass reinforced plastics material. The fibre reinforced plastics material may include any suitable and appropriate fibres including carbon fibres, Kevlar fibres, and other synthetic fibres.
The lid of the present invention is advantageous because it can be manufactured without the need for using a mould and a gel coat, as in known lids for water tanks and their method of production. In addition, the method of the invention for producing the lid is advantageous in that the method enables the lid to be produced on site, for example adjacent a water tank in a loft. There are no problems of getting a complete lid through an access aperture which is too small, for example a trap door in a ceiling. The plastics sheet material necessary for forming the inner layer can be bent or rolled to get it through the access opening. Once through the access opening, the plastics sheet material can be laid out to form the inner layer, and then the intermediate and outer layers can be provided on the inner layer as mentioned above. Because the lid can be produced on site, it avoids the need to make existing lids in pieces in order to get them through access openings which are too small, and then to have to join the pieces together once through the access openings. The lid of the present invention may be produced in less time and utilising less space than is required for producing the above mentioned known lids. In addition, the under surface of the lid can be blemish free, which is often not the case with known lids where gel coat imperfections and/or air between the gel coat and the mould cause the inner face of the known lids to have blemishes and imperfections.
An embodiment of the invention will now be described solely by way of example and with reference to the accompanying drawings in which:
Figure 1 is a section through a lid of the invention;
Figure 2 is a section through an inner layer of the lid shown in Figure 1; and
Figure 3 is a section through inner and intermediate layers of the lid as shown in Figure 1.
Referring to the drawings, there is shown a lid 2 for a tank (not shown). The lid 2 comprises an inner layer 4 of a plastics material, an intermediate layer 6 of an insulating material, and an outer layer 8 of a reinforcing material.
The lid 2 is such that the intermediate layer 6 is adhered to the inner layer 4. The outer layer 8 is adhered to the intermediate layer 6. The outer layer 8 is also adhered to the inner layer 4 as shown so that the outer layer 8 encapsulates the intermediate layer 6.
The inner layer 4 is provided with side flanges 10, 12, and an access aperture 14.
The plastics sheet material for the inner layer is polyvinyl chloride. The insulating material for the intermediate layer is in the form of two blocks of foamed insulating material as shown in Figure 1. The reinforcing material for the outer layer is a curable reinforcing material in the form of fibre reinforced plastics material or glass reinforced plastics material. The intermediate layer is adhered to the plastics sheet material of the inner layer with an adhesive. The outer layer adheres to the intermediate layer and the inner layer as it cures.
The intermediate layer 6 may be of any suitable and appropriate thickness, for example, one or two inches thick (2.540-5.080cm thick).
The lid 2 may be manufactured on site adjacent a water tank in a loft. If the access opening to the loft is small, the inner layer 4 can be folded or rolled to get it through the access opening. The inner layer 4 can be cut to the required dimensions before or after it is placed through the access opening. The side flanges 10,12 and the access aperture 14 are made from the plastics sheet material used for the inner layer 4. They can be hot welded or solvent bonded to the remainder of the inner layer 4. When the inner layer 4 is formed to the required shape as shown in Figure 2, the intermediate layer 6 in the form of the illustrated foam insulating blocks can then be bonded to the inner layer 4 using any suitable and appropriate adhesive as shown in Figure 3. A suitable polyvinyl chloride bonding solution is applied to all the exposed areas of the inner layer 4. The outer layer 8, for example fibre reinforced plastics material or glass reinforced plastics material, is then applied over the entire upper surface so that the outer layer 8 bonds firmly to the intermediate layer 6 and the exposed parts of the inner layer 4. The bonding is effected as the outer layer 8 cures. The outer layer 8 encapsulates the intermediate layer 6.
When the outer layer 8 has gelled or cured, then the outer layer 8 may be trimmed with a knife, or it may be sanded to the required profile, for example the profile of the inner layer 4. The bond between the inner layer 4 and the outer layer 8 may be stronger than the interlamination bond of the fibre reinforced plastics material or the glass reinforced plastics material of the outer layer 8.
The lid 2 is thus a composite lid 2 which has been produced without the use of a mould or a gel coat. In a loft or other position, the inner layer 4 can be supported on boards or any other suitable and appropriate support material until the intermediate layer 6 and the outer layer 8 are provided.
It is to be appreciated that the embodiment of the invention described above with reference to the accompanying drawings has been given by way of example only and that modifications may be effected. Thus, for example, other materials than those stated may be employed for the inner layer 4, the intermediate layer 6 and the outer layer 8. Also, the lid 2 may be of a different shape to that shown.
Claims (22)
- CLAIMS 1. A lid for a tank, which lid comprises an inner layer of a plastics sheet material, an intermediate layer of an insulating material, and an outer layer of a reinforcing material, the lid being such that the intermediate layer is adhered to the inner layer, and the outer layer is adhered to the intermediate layer.
- 2. A lid according to claim 1 in which the outer layer is also adhered to the inner layer, the outer layer then being such that it encapsulates the intermediate layer.
- 3. A lid according to claim 1 or claim 2 in which the inner layer includes at least one flange and/or at least one access aperture.
- 4. A lid according to any one of the preceding claims in which the plastics sheet material is a thermo-plastics sheet material.
- 5. A lid according to claim 4 in which the thermoplastics sheet material is polyvinylchloride.
- 6. A lid according to any one of the preceding claims in which the insulating material of the intermediate layer is adhered to the plastics sheet material of the inner layer with an adhesive.
- 7. A lid according to any one of the preceding claims in which the insulating material is a foam insulating material or mineral wool.
- 8. A lid according to any one of the preceding claims in which the reinforcing material of the outer layer is a curable reinforcing material.
- 9. A lid according to claim 8 in which the curable reinforcing material is a fibre reinforced plastics material.
- 10. A lid according to claim 8 in which the curable reinforcing material is a glass reinforced plastics material.
- 11. A lid for a tank, substantially as herein described with reference to the accompanying drawings.
- 12. A method of producing a lid for a tank, which method comprises providing an inner layer of a plastics sheet material, adhering an intermediate layer of an insulating material to the inner layer, and adhering an outer layer of a reinforcing material to the intermediate layer.
- 13. A method according to claim 12 in which the outer layer is also adhered to the inner layer, the outer layer then being such that it encapsulates the intermediate layer.
- 14. A method according to claim 12 or claim 13 and including providing the inner layer with at least one flange and/or at least one access aperture.
- 15. A method according to any one of claims 12-14 in which the. plastics sheet material is a thermo-plastics sheet material.
- 16. A method according to claim 15 in which the thermoplastics sheet material is polyvinyl chloride.
- 17. A method according to any one of claims 12-16 in which the insulating material of the intermediate layer is adhered to the plastics sheet material of the inner layer with an adhesive.
- 18. A method according to any one of claims 12-17 in which the insulating material is a foam insulating material.
- 19. A method according to any one of the preceding claims in which the reinforcing material of the outer layer is a curable reinforcing material.
- 20. A method according to claim 19 in which the curable reinforcing material is a fibre reinforced plastics material.
- 21. A method according to claim 19 in which the curable reinforcing material is a glass reinforced plastics material.
- 22. A method of producing a lid for a tank, substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9824446A GB2343410A (en) | 1998-11-06 | 1998-11-06 | A lid for a tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9824446A GB2343410A (en) | 1998-11-06 | 1998-11-06 | A lid for a tank |
Publications (2)
Publication Number | Publication Date |
---|---|
GB9824446D0 GB9824446D0 (en) | 1999-01-06 |
GB2343410A true GB2343410A (en) | 2000-05-10 |
Family
ID=10842044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9824446A Withdrawn GB2343410A (en) | 1998-11-06 | 1998-11-06 | A lid for a tank |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2343410A (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB837313A (en) * | 1956-12-12 | 1960-06-09 | Brian Harry George Halford | Improvements in or relating to cisterns |
GB993695A (en) * | 1962-03-02 | 1965-06-02 | Brian Harry George Halford | Improvements in or relating to cisterns |
GB1042813A (en) * | 1964-05-12 | 1966-09-14 | Harold Eric Friday | Improvements in storage tanks or cisterns for liquids |
GB1124137A (en) * | 1964-12-23 | 1968-08-21 | Wikholm Karl Oskar | Method for producing leakproof containers and the containers thereby produced |
US4579617A (en) * | 1983-06-27 | 1986-04-01 | Dynatrans Technology, Ltd. | Method of manufacturing tanks, containers, pipes, etc. |
DE29802334U1 (en) * | 1998-02-11 | 1998-05-07 | Niemann, Horst, Dr.-Ing., 68723 Schwetzingen | Cover plate for clarifiers |
-
1998
- 1998-11-06 GB GB9824446A patent/GB2343410A/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB837313A (en) * | 1956-12-12 | 1960-06-09 | Brian Harry George Halford | Improvements in or relating to cisterns |
GB993695A (en) * | 1962-03-02 | 1965-06-02 | Brian Harry George Halford | Improvements in or relating to cisterns |
GB1042813A (en) * | 1964-05-12 | 1966-09-14 | Harold Eric Friday | Improvements in storage tanks or cisterns for liquids |
GB1124137A (en) * | 1964-12-23 | 1968-08-21 | Wikholm Karl Oskar | Method for producing leakproof containers and the containers thereby produced |
US4579617A (en) * | 1983-06-27 | 1986-04-01 | Dynatrans Technology, Ltd. | Method of manufacturing tanks, containers, pipes, etc. |
DE29802334U1 (en) * | 1998-02-11 | 1998-05-07 | Niemann, Horst, Dr.-Ing., 68723 Schwetzingen | Cover plate for clarifiers |
Also Published As
Publication number | Publication date |
---|---|
GB9824446D0 (en) | 1999-01-06 |
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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) |