GB2211466A - Thermal insulation material - Google Patents
Thermal insulation material Download PDFInfo
- Publication number
- GB2211466A GB2211466A GB8824877A GB8824877A GB2211466A GB 2211466 A GB2211466 A GB 2211466A GB 8824877 A GB8824877 A GB 8824877A GB 8824877 A GB8824877 A GB 8824877A GB 2211466 A GB2211466 A GB 2211466A
- Authority
- GB
- United Kingdom
- Prior art keywords
- insulating material
- flammable
- element according
- elements
- substantially non
- 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- Withdrawn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
- 239000012774 insulation material Substances 0.000 title claims abstract description 11
- 239000011810 insulating material Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 5
- 229920003023 plastic Polymers 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000000758 substrate Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 239000003112 inhibitor Substances 0.000 claims description 2
- 239000011495 polyisocyanurate Substances 0.000 claims description 2
- 229920000582 polyisocyanurate Polymers 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 5
- 239000002648 laminated material Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 229920005830 Polyurethane Foam Polymers 0.000 description 5
- 239000011496 polyurethane foam Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 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
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/245—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
-
- 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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/28—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
-
- 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
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- 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
- B32B3/02—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 features of form at particular places, e.g. in edge regions
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/35—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation
- E04D3/351—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material
- E04D3/352—Roofing slabs or stiff sheets comprising two or more layers, e.g. for insulation at least one of the layers being composed of insulating material, e.g. fibre or foam material at least one insulating layer being located between non-insulating layers, e.g. double skin slabs or sheets
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/36—Connecting; Fastening
- E04D3/366—Connecting; Fastening by closing the space between the slabs or sheets by gutters, bulges, or bridging elements, e.g. strips
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/38—Devices for sealing spaces or joints between roof-covering elements
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/14—Arrangements for the insulation of pipes or pipe systems
-
- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- 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
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- 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
- B32B2419/00—Buildings or parts thereof
- B32B2419/06—Roofs, roof membranes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Building Environments (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The present invention relates to thermal insulation material and in particular to a laminated material 2 suitable for use in roof coverings 1 and on hot fluid or powder conduits and vessels. More particularly the present invention provides an insulating material element 2 suitable for use in building or processing plant insulation which element comprises first and second layers 4, 5 of a substantially non-flammable glass fibre reinforced plastics material sealed together at their outer edges 6 with a layer or substantially non-flammable thermal insulating material 11 sandwiched therebetween. The invention also provides a method of constructing an extended sheet of insulating material from a plurality of elements 2 of the invention which have an elongate flange outwardly extending flange 8, 9 and positioning them with the outside edges of said elongate flanges 8, 9 in abutment with each other so as to define a channel 15 between the adjoining elements 2. The channel is then filled with non-flammable thermal insulation material 17, and sealed over said insulation material 17 with substantially non-flammable, optionally glass-reinforced, plastics material 18. <IMAGE>
Description
THERMAL INSULATION MATERIAL
The present invention relates to thermal insulation material and in particular to a sheet material suitable for use in roof coverings and on hot fluid or powder conduits and vessels.
It has previously been proposed to use flat roof coverings comprising a base layer of plywood or other timber sheeting, a central insulating layer of polyurethane foam or the like, a top layer of glass fibre reinforced plastics.
Once these have been laid on a flat roof, the adjoining edges are sealed over with locally applied resin. The individual elements are however susceptible to absorbing moisture into the wooden base layer and even into the foam layer especially before and during application unless very careful precautions are taken, thereby giving rise to the risk of substantially hidden long term deterioration once the roof covering has been installed and an eventual breakdown of the system.
It is an object of the present invention to avoid or minimize one or thereof the above disadvantages and provide a substantially improved insulation factor.
The present invention provides an insulating sheet material element suitable for use in building or processing plant insulation which material comprises first and second layers of a substantially non-flammable glass fibre reinforced plastics material sealed together at their outer edges with a layer of substantially non-flammable thermal insulating material sandwiched therebetween.
With a sheet material element of the present invention it is possible to achieve a high degree of thermal insulation without any increase in fire hazard and without any significant risk of deterioration of the insulating sheet due to moisture penetration, leading to eventual decay.
Preferably said outer edges are sealed together in a substantially overlapping outwardly projecting disposition so as to form an elongate flange suitable for use in securing of an insulating sheet of the invention to a substrate and/or another sheet of the invention.
Various suitable non-flammable thermal insulating materials known in the art may be used in the elements of the present invention including both insulating materials which are inherently non-flammable as well as other materials which have had a combustion inhibitor incorporated therein. Suitable insulating materials that may be mentioned include polyurethane and polyisocyanurate foam.
In a further aspect the present invention provides a method of constructing an extended sheet of insulating material from a plurality of insulating sheet material elements of the invention which have a said elongate flange and positioning them with the outside edges of said elongate flanges in abutment with each other so as to define a channel between adjoining elements, filling at least a major part of the depth of said channel with substantially non-flammable thermal insulation material, and sealing over said insulation material with substantially non-flammable, optionally glass re-inforced, plastics material, so that said channel is substantially wholly filled in.
Further preferred features and advantages of the invention will appear from the following detailed description given by way of example of some preferred embodiments illustrated with reference to the accompanying drawings which:
Fig. 1 is a vertical section through a flat-roof covering made up of a plurality of elements of the present invention
Figs. 2 to 5 are vertical detail sections through some alternative embodiments provided with a decorative finish, an expansion joint and special elements for mansard roofs and behind parapets, respectively; and
Fig. 6 is a partially cut-away perspective view of an embodiment for use in insulating hot-fluid pipelines, or ducts which would vary in sectional configuration and dimensions.
Fig. 1 shows part of a flat-roof covering 1 made up of a plurality of elements 2 of the invention on a timber or like substrate 3. Each of the elements comprises a flat base layer of non-flammable grade glass fibre reinforced polyester or other suitable plastics material, and a second, upper, layer 5 of same material substantially spaced from the base layer 4 except at its out peripheral edge portion 6 which has first a downwardly and outwardly inclined circumferential portion 7 and then a outermost free edge portion 8 which extends outwardly in overlapping relation with the outer edge 9 of the base layer 4 for sealing thereto.The central area 10 comprising the major part of the area of the element 2 is filled between the spaced apart base and upper layers 4, 5 with thermal insulation material 11 in the form of fire resistant polyurethane foam such as that obtainable from Kooltherm Insulation Products
Ltd., of Glossop, England.
The elements are conveniently mass produced in a factory e.g. by spraying the polyester resin onto a metal panel, applying a glass fibre reinforcement mat onto the resin coating and then spraying more resin onto the mat so as to form a base layer on the metal panel, placing a frusto-pyramidal layer of fire resistant grade polyurethane foam after allowing the resin to set at least partly, and then forming the upper layer over the insulating layer and the exposed outer edges of the base layer. Conveniently, a final finish such as colouring and/or texturing is applied to the upper layer outer face 12 before the resin has set, e.g. by sprinkling sand onto the partially set resin to form a non-slip finish 13.
Once the resin has set the elements may be removed from the metal substrate, and stored as completely finished impermeable panels until required.
The elements 2 may be secured to the roof substrate 3 by conventional mechanical securing means such as screws or nails 14 through the sealed together other edges 8, 9 of the elements 2. Thereafter the channels 15 defined between the outer edge portions 6, 7, 8 of the adjoining elements 2 may then be sealed in situ as follows. A coating of resin 16 is applied to the outer edges 6 of the panel elements 2 and allowed to set at least partly.
The channels 15 are then filled up more or less to the level of the surrounding panel elements 2 with polyurethane foam 17 which is then sealed in with a further layer of resin 18 which is carried over onto the upper faces 19 of the surround panel elements 2, preferably being reinforced with glass fibre matting and conveniently also having sand applied thereto to provide a non slip finish 13.
In this way a substantially continuous weatherproof roof covering may be provided which is substantially flat and continuously thermally insulated (i.e. without "cold spots"), and does not form any water holding areas which could give rise to water penetration over an extended period of time. At the same time the use of factory production for the sealed, individually weatherresistant panel elements themselves helps to minimize costs and damage before and during installation due to water absorption.
Figs. 2 to 6 show various applications of the basic elements 2 of Fig. 1.
In Fig. 2 is shown a modified embodiment in which the channel filling in of the channel 15 has been modified by suspension of a beading 20 underneath the final layer of resin 18 on top of the polyurethane foam filling 17 above the butting edges 21 of the elements 2 so as to simulate the joint 22 on a lead or zinc sheeting roof covering.
In the embodiment of Fig.3 the outermost edges 21 of neighbouring elements 2 have a small expansion gap 23 therebetween. In this case the outer edges 7, 8 of the element 2 have been built up to the full thickness of the element 2 in a manner generally similar to filling in the channels 15 so as to maintain the gap 23 between the neighbouring elements 2. A relatively thick flexible layer of glass fibre reinforced plastics is bonded to the upper face 24 of the built up 25 element edges 7, 8 so as to provide a central raised rib portion 26 which can accommodate opening and closing of the expansion joint whilst maintaining a cell above it.
In Figs. 4 and 5 are shown specially formed elements 27, 28 for use on a mansard roof 29 and binding a parapet 30.
These elements are of generally similar construction to the standard element 2 being merely contoured and/or having appropriately angled outer edge flanges to meet the required situation. It will be noted in this case that the special elements are shaped so that channels are not formed between covering elements whereby joints can be simply sealed over with an outer layer of resin preferably reinforced with glass fibre matting 32. These sections would be of a purpose-made nature to suit each structure.
Finally Fig. 6 shows two generally semi-tubular elements for use on a pipe or duct 34 conveying a hot fluid or powder 35, such as molten sugar. In such cases it is particularly important to avoid cooling of the hot fluid or powder 35 since this could block the pipe or duct and result in major problems in overcoming blockage. The elements 33 are conveniently secured to each other at their outer edge flange portions 36 by mechanical fixing means such as nuts and bolts 37. Further forms of the insulating elements of the invention may also be used on large vessels used for containing such hot fluids or powders in buck storage in food processing or such similar activities.
Fig. 7 shows another ducting insulation 38 of the invention with a modified jointing system of abutting annular flanges 39.
Claims (14)
1. An insulating material element suitable for use in
building or processing plant insulation which element
comprises first and second layers of a substantially
non-flammable glass fibre reinforced plastics
material sealed together at their outer edges with
a layer of substantially non-flammable thermal
-insulating material sandwiched therebetween.
2. An element according to claim 1 wherein said outer
edges are sealed together in a substantially
overlapping outwardly projecting disposition so
as to form an elongate flange suitable for use in
securing of an insulating sheet of the invention
to a substrate and/or another sheet of the invention.
3. An element according to claim 1 or claim 2 wherein
said element is generally sheet form and/or part
tubular.
4. An element according to claim 3 which element is
of semi-cylindrical form.
5. An element according to claim 1 which element is
of generally tubular form.
6. An element according to claim 5 which is of generally
polygonal cross-section.
7. An element according to claim 5 which is of generally
rounded section.
8. An element according to any one of claims 1 to 7
wherein said insultating material is inherently
non-flammable.
9. An element according to any one of claims 1 to 8
wherein said insulating material incorporates a
combustion inhibitor.
10. An element according to any one of claims 1 to 9
wherein said insulating material is selected from
polyurethane and polyisocyanurate foam.
11. An extended sheet of insulating material comprising
a plurality of elements according to claim 2 or any
one of claims 3 to 10 when dependent thereon, wherein
channels defined between adjoining elements at said
elongate flanges are substantially filled with
insulating material and sealed over with substantially
non-flammable plastics material.
12. A method of constructing an extended sheet of
insulating material from a plurality of insulating
sheet material elements according to claim 2 and
positioning them with the outside edges of said
elongate flanges in abutment with each other so as to
define a channel(s) between adjoining elements,
filling at least a major part of the depth of said
channel with substantially non-flammable thermal
insulation material, and sealing over said insulation
material with substantially non-flammable, optionally
glass-reinforced, plastics material, so that said
channel is substantially wholly filled in.
13. An insulating material element substantially as
described herein before with particular reference
to any one of the accompanying drawings.
14. A method of constructing an extended sheet of
insulating material substantially as described
hereinbefore with particular reference to any one
of Figs. 1 to 3 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB878724936A GB8724936D0 (en) | 1987-10-24 | 1987-10-24 | Thermal insulation material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8824877D0 GB8824877D0 (en) | 1988-11-30 |
| GB2211466A true GB2211466A (en) | 1989-07-05 |
Family
ID=10625825
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB878724936A Pending GB8724936D0 (en) | 1987-10-24 | 1987-10-24 | Thermal insulation material |
| GB8824877A Withdrawn GB2211466A (en) | 1987-10-24 | 1988-10-24 | Thermal insulation material |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB878724936A Pending GB8724936D0 (en) | 1987-10-24 | 1987-10-24 | Thermal insulation material |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB8724936D0 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2262192A (en) * | 1991-11-28 | 1993-06-09 | Zortech Int | Insulated duct for electric cables |
| GB2391599A (en) * | 2002-08-06 | 2004-02-11 | Glynwed Pipe Systems Ltd | Impovements in multilayered pipes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1512239A (en) * | 1974-10-31 | 1978-05-24 | Coldstream Prod Of Ca Ltd | Method and apparatus for manufacturing sandwich panels |
| GB1545060A (en) * | 1976-01-06 | 1979-05-02 | Pedler K | Method and bilaminate sheet for reinforcing sheet material |
| GB2106446A (en) * | 1981-09-21 | 1983-04-13 | Quaker Oats Co | Composite construction materials with improved fire resistance |
| GB2115346A (en) * | 1981-11-14 | 1983-09-07 | Wilson Haffenden Philip Allen | Elements for construction of roofs |
| GB2151184A (en) * | 1983-12-09 | 1985-07-17 | Geoffrey Harold Jensen | Reinforced plastic sandwich construction |
| GB2181095A (en) * | 1985-09-30 | 1987-04-15 | Pall Corp | Insulating structure |
-
1987
- 1987-10-24 GB GB878724936A patent/GB8724936D0/en active Pending
-
1988
- 1988-10-24 GB GB8824877A patent/GB2211466A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1512239A (en) * | 1974-10-31 | 1978-05-24 | Coldstream Prod Of Ca Ltd | Method and apparatus for manufacturing sandwich panels |
| GB1545060A (en) * | 1976-01-06 | 1979-05-02 | Pedler K | Method and bilaminate sheet for reinforcing sheet material |
| GB2106446A (en) * | 1981-09-21 | 1983-04-13 | Quaker Oats Co | Composite construction materials with improved fire resistance |
| GB2115346A (en) * | 1981-11-14 | 1983-09-07 | Wilson Haffenden Philip Allen | Elements for construction of roofs |
| GB2151184A (en) * | 1983-12-09 | 1985-07-17 | Geoffrey Harold Jensen | Reinforced plastic sandwich construction |
| GB2181095A (en) * | 1985-09-30 | 1987-04-15 | Pall Corp | Insulating structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2262192A (en) * | 1991-11-28 | 1993-06-09 | Zortech Int | Insulated duct for electric cables |
| US5391840A (en) * | 1991-11-28 | 1995-02-21 | Zortech International Limited | Insulated duct |
| GB2391599A (en) * | 2002-08-06 | 2004-02-11 | Glynwed Pipe Systems Ltd | Impovements in multilayered pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8824877D0 (en) | 1988-11-30 |
| GB8724936D0 (en) | 1987-11-25 |
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