GB2223712A - Insulated body member - Google Patents
Insulated body member Download PDFInfo
- Publication number
- GB2223712A GB2223712A GB8822372A GB8822372A GB2223712A GB 2223712 A GB2223712 A GB 2223712A GB 8822372 A GB8822372 A GB 8822372A GB 8822372 A GB8822372 A GB 8822372A GB 2223712 A GB2223712 A GB 2223712A
- Authority
- GB
- United Kingdom
- Prior art keywords
- body member
- layer
- insulated body
- insulating material
- metal
- 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
Links
- 239000011810 insulating material Substances 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 8
- 239000004800 polyvinyl chloride Substances 0.000 claims description 8
- 239000011120 plywood Substances 0.000 claims description 7
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000002990 reinforced plastic Substances 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 230000003542 behavioural effect Effects 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 239000002023 wood 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
- B32B5/32—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 at least two layers being foamed and next to each other
-
- 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
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/04—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains
- B62D33/048—Enclosed load compartments ; Frameworks for movable panels, tarpaulins or side curtains for refrigerated goods vehicles
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0235—Vinyl halide, 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
- 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
- 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
- B32B2439/00—Containers; Receptacles
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
An insulated body member for a refrigerated vehicle or container comprises a layer of a first insulating material and an outer skin, a layer of second waterproof insulating material being provided between the two.
Description
IMPROVEMENTS IN AND RELATING TO THERMALLY INSULATED CONTAINERS
This invention relates to thermally insulated containers and, in particular, to the thermally insulated bodies of lorries, trailers, semi-trailers, containers and vans intended to carry goods in a frozen or chilled condition.
In known refrigerated vehicles the walls and/or floor and/or ceiling of the load-carrying area large formed from composite panels either secured together or supported on a metal or wood framework. The panels comprise a layer of insulating material normally sandwiched between two skins. The skins may be formed from plywood or a metal such as aluminium or steel which may, in turn, be covered with a layer of reinforced plastics material. The layer of insulating material is either secured to the two skins by adhesive or it is injected between the two skins in a liquid state. Known insulating materials are foamed plastics materials such as polyurethane, polyvinyl chloride and polystyrene.
A very desirable property of the insulating material is that it should be water resistant so that if the skins are punctured the insulating material does not allow the ingress of water and therefore prevents corrosion and reduction of the insulation of the load-carrying area. However, such material are more expensive and often difficult to obtain and consequently, despite their advantages, it has not been found practicable to employ them in insulated vehicle bodies.
In accordance with the invention an insulated van body member comprises a composite material having at least three layers, a first layer which defines at least part of the exterior surface of the van body, a second layer of a first insulating material and a third layer of a second insulating material, the second layer being located behind its first and third layers, the first and second insulating materials having similar mechanical behaviour characteristics and the first insulating material being waterproof.
The advantage of this is that is that a layer of waterproof insulating material is provided adjacent the external skin of the van body where punctures are most likely to occur but by making part of the insulating - portion from a non-waterproof and therefore cheaper insulating material, the cost of the member is reduced.
It is important that the two materials have similar mechanical behaviour characteristics since they will act together when loded. If they did not do this, additional stresses would be introduced into the member and there would be a danger of the two layers moving apart and weakening and/or distorting the member.
Preferably the two insulating materials also have similar thermal behaviour characteristics for the same reason.
Preferably the ratio of the proportions of the first insulating material to the second insulating material is between 1 to 4 and 1 to 1. It has been found that the thickness of the waterproof insulating material can he as little as 252 of that of the insulating portion without loss of the improved properties.
Suitably the member has a fourth layer which defines at least part of the interior surface of the van body. The first and fourth layers may be formed from plywood or a metal or a metal alloy and can be coated with a reinforced plastics material to increase the moisture resistance of the member.
Expanded polyvinyl chloride is a particularly preferred first insulating material. It is waterproof and in additon has good mechanical and thermal properties, in particlar, it has a high strength to weight ratio and a high softening temperature and is a good insulator. The polyvinyl chloride therefore not only prevents ingress of water but also protects the second insulating material from the effects of external heat . For example, in a preferred embodiment where polyvinyl chloride is employed with polystyrene which has a low softening temperature, the polyvinyl chloride allows the use of the polystyrene in environments where the polystyrene could not be used alone because of the softening which would have occurred.
The invention will now be further described by way of example with reference to the accompanying drawing which is a section through part of a member in accordance with the invention.
The member 2 has four layers, two of which, 4 and 6, are skins. Skin 4 forms part of the interior surface of the van body while skin 6 forms part of the exterior surface. The skins may be formed from either plywood, or a reinforced plastics material such as glass reinforced polyester, or a metal such as aluminium or a metal alloy such as steel. When the skins are formed from plywood or a metal or metal alloy they are preferably coated with a reinforced plastics material to increase moisture resistance of the member 2.
Between the two skins are two further layers 8 and 10 both of which are formed from an insulating material. The layer 8 which is closest to the exterior skin 6 is formed from a foamed plastics material which is a waterproof insulating material, preferably expanded polyvinyl chloride. Layer 10 is also formed from a foamed plastics material suitably either polystyrene or polyurethane.
The layers 4, 6, 8 and 10 may be secured together with adhesive or the two skins 4 and 6 may be held in a spaced relationship and the foamed plastics materials injected in between. The exterior skin 4, which is the most likely to be damaged may be formed in short sections held in place by clips 12 embedded in insulating material layer 8. These clips allow a damaged section of the exterior skin to be removed and replaced without necessitating replacement of the whole panel.
With the materials set out above, satisfactory insulation is acheived with a panel thickness of about 60 mm. The width of the layer 8 of waterproof insulating material may be between 12 and 30 mm.
The panel 2 exhibits all the advantages of employing expanded polyvinyl chloride, that is, good water and heat resistance and high strength whilst still being relatively inexpensive to manufacture.
Claims (11)
1. An insulated body member for a refrigerated vehicle or container having at least three layers, a first layer which defines at least part of the exterior surface of the vehicle or container, a second layer formed from a first insulating material and a third layer formed from a second insulating material, the second layer being located between the first and third layers, wherein the two insulating materials have similar mechanical behavioural characteristics and the first insulating material is waterproof.
2. An insulated body member as claimed in
Claim 1 wherein the two insulating materials have similar thermal behavioural characteristics.
3. An insulated body member as claimed in either Claim 1 or Claim 2 wherein the ratio of the thickness of the second layer to that of the third layer is between 1 to 4 and 1 to 1.
4. An insulated body member as claimed in any preceding Claim wherein a fourth layer is provided which defines part of the interior surface of the van body.
5. An insulated body member as claimed in
Claim 4 wherein the fourth layer is formed from plywood or a metal or a metal alloy.
6. An insulated body member as claimed in any preceding Claim wherein the first layer is formed from plywood or a metal or a metal alloy.
7. An insulated body member as claimed in either Claim 5 or 6 wherein the plywood or metal or metal alloy is coated with a reinforced plastics material.
8. An insulated body member as claimed in any preceding Claim wherein the first insulating material is a foamed plastics material.
9. An insulated body member as claimed in any preceding Claim wherein the first insulating material is expanded polyvinyl chloride.
10. An insulated body member as claimed in any preceding Claim wherein the second insulating material is either polystyrene or polyurethane.
11. An insulated body member substantially as herein described with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8822372A GB2223712B (en) | 1988-09-23 | 1988-09-23 | Improvements in and relating to thermally insulated containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8822372A GB2223712B (en) | 1988-09-23 | 1988-09-23 | Improvements in and relating to thermally insulated containers |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8822372D0 GB8822372D0 (en) | 1988-10-26 |
| GB2223712A true GB2223712A (en) | 1990-04-18 |
| GB2223712B GB2223712B (en) | 1992-10-14 |
Family
ID=10644119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8822372A Expired - Fee Related GB2223712B (en) | 1988-09-23 | 1988-09-23 | Improvements in and relating to thermally insulated containers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2223712B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958995A3 (en) * | 1998-05-22 | 2000-07-12 | Peter Kiesling | Wall element for the body structure of a vehicle and fabrication process of such a wall element |
| WO2000047401A1 (en) * | 1999-02-10 | 2000-08-17 | Warrington Vehicle Centre Limited | Insulating material |
| EP1415898A3 (en) * | 2002-11-02 | 2004-11-10 | ArvinMeritor GmbH | Plane body part |
| WO2012063270A1 (en) * | 2010-11-08 | 2012-05-18 | Framec Trade S.R.L. | Improved insulating panel and process for manufacturing such panel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212884A2 (en) * | 1985-07-30 | 1987-03-04 | The Dow Chemical Company | Partially flexibilized extruded plastic foam panel and method for making thereof |
| WO1987004663A1 (en) * | 1986-02-11 | 1987-08-13 | Portapax Ltd. | Foam sheet |
| EP0255332A2 (en) * | 1986-07-30 | 1988-02-03 | ARCO Chemical Technology, L.P. | Automotive trim panel |
-
1988
- 1988-09-23 GB GB8822372A patent/GB2223712B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0212884A2 (en) * | 1985-07-30 | 1987-03-04 | The Dow Chemical Company | Partially flexibilized extruded plastic foam panel and method for making thereof |
| WO1987004663A1 (en) * | 1986-02-11 | 1987-08-13 | Portapax Ltd. | Foam sheet |
| EP0255332A2 (en) * | 1986-07-30 | 1988-02-03 | ARCO Chemical Technology, L.P. | Automotive trim panel |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0958995A3 (en) * | 1998-05-22 | 2000-07-12 | Peter Kiesling | Wall element for the body structure of a vehicle and fabrication process of such a wall element |
| WO2000047401A1 (en) * | 1999-02-10 | 2000-08-17 | Warrington Vehicle Centre Limited | Insulating material |
| GB2351698A (en) * | 1999-02-10 | 2001-01-10 | Warrington Vehicle Ct Ltd | Insulating material |
| EP1415898A3 (en) * | 2002-11-02 | 2004-11-10 | ArvinMeritor GmbH | Plane body part |
| US6974179B2 (en) | 2002-11-02 | 2005-12-13 | Arvinmeritor Gmbh | Vehicle bodywork component |
| WO2012063270A1 (en) * | 2010-11-08 | 2012-05-18 | Framec Trade S.R.L. | Improved insulating panel and process for manufacturing such panel |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8822372D0 (en) | 1988-10-26 |
| GB2223712B (en) | 1992-10-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19930923 |