WO2007148347A1 - Container made of composite material - Google Patents
Container made of composite material Download PDFInfo
- Publication number
- WO2007148347A1 WO2007148347A1 PCT/IT2006/000463 IT2006000463W WO2007148347A1 WO 2007148347 A1 WO2007148347 A1 WO 2007148347A1 IT 2006000463 W IT2006000463 W IT 2006000463W WO 2007148347 A1 WO2007148347 A1 WO 2007148347A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- new container
- composite material
- frame
- side walls
- panels
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/02—Large containers rigid
- B65D88/12—Large containers rigid specially adapted for transport
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/022—Laminated structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/023—Modular panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/02—Wall construction
- B65D90/08—Interconnections of wall parts; Sealing means therefor
Definitions
- the present invention concerns containers for transporting goods and in particular it concerns a new container for transporting goods made of a light and resistant material.
- the containers when the containers are loaded on the ships, they must be arranged according to specific patterns and secured firmly, in such a way as to guarantee the stability of the ship during navigation, even in a rough sea, in open seas, oceans and Antarctic seas, where there can be very strong waves.
- the known containers have a frame made of a metallic material, with side walls, bottom and top made of metal panels, usually suitably treated steel.
- the known containers are rather heavy, approximately 4000 kg for a 40000 kg container, which makes said containers difficult to handle even when they are empty or only partially loaded.
- the material used for making these containers although suitably treated, is subject to the action of corrosive agents like salinity or aggressive substances.
- the bottom of the containers used at present is covered with panels in hardboard or wood, which can be easily attacked by mildew and bacteria. In this way the proliferation of bacterial agents is certainly favoured, with the consequent phytosanitary problems.
- the main aim of the present invention is to make containers for transporting goods characterized by reduced weight and high mechanical resistance and resistance to corrosive agents.
- Another aim of the present invention is to make container handling operations quicker and safer, in particular during the loading, unloading and storage stages.
- a further aim of the present invention is to increase the stability of the ship, since, though featuring high resistance, the containers have a limited weight that allows the total load to be reduced, which is of benefit to the stability of the ship.
- a further aim of the present invention is to make it possible to increase the quantity and/or mass of the material transported by each single container and therefore by each single ship.
- Another important aim of the invention is to reduce unit transport costs. These and other direct and complementary aims have been achieved through the implementation of the new container made of composite materials featuring high resistance and reduced weight.
- the new container is carried out with a frame made of composite linear elements in fibreglass-epoxy resin obtained through pultrusion; the side panels, the bottom and the top are made with sandwich panels having the outer layers in fibreglass-epoxy resin and the core in medium-density PVC foam.
- the base or bottom of the container consists of sandwich panels with outer layers constituted by quasi-isotropic laminates with a modulus of elasticity of approximately 14000 MPa, having an ultimate tensile stress not lower than 120 MPa.
- the PVC core has a modulus of elasticity of 150-200 MPa.
- Each one of said panels making up the bottom of the container has been designed considering a specific pressure of 0.02 MPa, that is, approximately
- the total weight of the container bottom will be approximately 240 kg.
- the total weight of the side panels will be approximately 500 kg.
- said side walls of the container will be constituted by sandwich panels, with outer layers and core respectively made of GFPR and PVC foam, with suitable thickness.
- the weight of the stiffening elements that is, the section bars or beams used to make the uprights and cross members of the frame, the following should be considered.
- the weight of the section bar per unit of length will be approximately 3 kg/ml.
- the weight of the section bar for example approximately 100 ml, this would give a total weight of the frame of approximately 300.00 kg.
- the materials chosen ensure a maximum downward flexure at the mid line of no more than 55 mm and corresponding maximum stresses not exceeding approximately 100 MPa, except for strongly localized shearing phenomena to be studied and optimized later on, with corresponding peaks of approximately 130 Mpa.
- the total weight of the container in question will be approximately 1040 kg. Therefore, it is possible to state that the use of the composite materials described above allows to obtain for the container that is the subject of the invention a weight that is considerably lower than the weight of a container produced using traditional materials like, for example, steel.
- the new container therefore makes it possible to increase the transported weight, which means reducing the goods transport costs and facilitating the handling of the containers, in particular when they are completely empty.
- Figure 1 shows a three-dimensional view of the frame (T) of a container made with the new composite materials.
- Figure 2 shows in detail a corner of the new container, where it is possible to see also the shape of the section (Sm) of the upright (M) and of the sections (St) of the upper cross members (Tt).
- the new container comprises a frame (T) made with composite beams in fibreglass-epoxy resin and in particular it comprises uprights (M), base cross members (Tb) and upper cross members (Tt) preferably having a hollow rectangular section.
- the side walls of the new container are made with sandwich panels (P) having the outer layers in fibreglass-epoxy resin and the core in medium- density PVC foam.
- Said panels are used for making the bottom, the top and the side walls, which comprise suitable accessories, such as inspection doors, loading/unloading openings and other devices with which the known containers are generally equipped.
Abstract
The invention is a new container for transporting goods, comprising a frame (T) that consists of uprights (Tm), bottom cross members (Tb) and top cross members (Tt), and bottom, top and side walls, and wherein said frame (T) is entirely or partially constituted by section bars in composite material comprising fibreglass-epoxy resin obtained through pultrusion, while said bottom and/or top and/or said side walls are made with one or more panels (P), each one of which is made of a composite material having a sandwich or layered structure, with outer layers in fibreglass-epoxy resin and core in medium-density PVC foam.
Description
TITLE CONTAINER MADE OF COMPOSITE MATERIAL
DESCRIPTION
The present invention concerns containers for transporting goods and in particular it concerns a new container for transporting goods made of a light and resistant material.
It is known that most ships are used for transporting goods, in particular in containers, while only a small part of sea traffic is due to passenger ships.
The problems connected to the handling and storage of said containers are known, especially because of their considerable size and weight.
Handling the known containers, in fact, is extremely complex and the loading and unloading stages require suitable equipment and highly specialized personnel.
In particular, when the containers are loaded on the ships, they must be arranged according to specific patterns and secured firmly, in such a way as to guarantee the stability of the ship during navigation, even in a rough sea, in open seas, oceans and Antarctic seas, where there can be very strong waves.
The known containers have a frame made of a metallic material, with side walls, bottom and top made of metal panels, usually suitably treated steel.
The known containers, therefore, are rather heavy, approximately 4000 kg for a 40000 kg container, which makes said containers difficult to handle even when they are empty or only partially loaded.
Furthermore, the material used for making these containers, although suitably treated, is subject to the action of corrosive agents like salinity or aggressive substances.
The bottom of the containers used at present is covered with panels in
hardboard or wood, which can be easily attacked by mildew and bacteria. In this way the proliferation of bacterial agents is certainly favoured, with the consequent phytosanitary problems.
To remedy all the above drawbacks a new container made of composite material has been designed and implemented.
The main aim of the present invention is to make containers for transporting goods characterized by reduced weight and high mechanical resistance and resistance to corrosive agents.
Another aim of the present invention is to make container handling operations quicker and safer, in particular during the loading, unloading and storage stages.
A further aim of the present invention is to increase the stability of the ship, since, though featuring high resistance, the containers have a limited weight that allows the total load to be reduced, which is of benefit to the stability of the ship.
A further aim of the present invention is to make it possible to increase the quantity and/or mass of the material transported by each single container and therefore by each single ship.
Another important aim of the invention is to reduce unit transport costs. These and other direct and complementary aims have been achieved through the implementation of the new container made of composite materials featuring high resistance and reduced weight.
Considering the dimensions and operating conditions of the container that is the subject of the invention, according to a general examination and preliminary calculations the new container is carried out with a frame made of composite linear elements in fibreglass-epoxy resin obtained through pultrusion; the side panels, the bottom and the top are made with sandwich
panels having the outer layers in fibreglass-epoxy resin and the core in medium-density PVC foam.
Alternatively, in case of considerable production volumes, a suitable RTM
(resin transfer moulding) system can be developed. The base or bottom of the container consists of sandwich panels with outer layers constituted by quasi-isotropic laminates with a modulus of elasticity of approximately 14000 MPa, having an ultimate tensile stress not lower than 120 MPa.
The PVC core has a modulus of elasticity of 150-200 MPa. Each one of said panels making up the bottom of the container has been designed considering a specific pressure of 0.02 MPa, that is, approximately
2000 Kg/m2. The results of simulations show that with these materials the maximum stress on the outer layers does not exceed approximately 20 MPa, while the maximum downward flexure of the panel does not exceed about 12 mm.
For the evaluation of the weight of the bottom sandwich panels, the following should be considered.
Given the weight of the composite laminate used for the outer layers, that is equal to approximately 1700 Kg/m3, and the weight of PVC foam, that is equal to approximately 150 kg/m3, for the panel in question a total weight of approximately 8 kg/m2 is considered.
If the surface area of the bottom is approximately 30 m , the total weight of the container bottom will be approximately 240 kg.
For the evaluation of the weight of the side sandwich panels, the following should be considered.
Making the same considerations as above, and taking into account also the thickness of the outer layers and of the PVC foam core, for the panels in
question,- which constitute the walls of the container, a total weight of approximately 5 kg/m2 is obtained.
If the surface area to be covered is approximately 100 m2, the total weight of the side panels will be approximately 500 kg. Also said side walls of the container will be constituted by sandwich panels, with outer layers and core respectively made of GFPR and PVC foam, with suitable thickness.
For the evaluation of the weight of the stiffening elements, that is, the section bars or beams used to make the uprights and cross members of the frame, the following should be considered.
Given the weight of the composite pultruded element, which is approximately 1800 kg/m3, considering the cross section of the section bars, which for example can be pultruded or laminate, the weight of the section bar per unit of length will be approximately 3 kg/ml. Considering a generic geometrical structure of the frame, for which the total number of metres of pultruded material to be used is for example approximately 100 ml, this would give a total weight of the frame of approximately 300.00 kg. To make a general plan for the development of the frame the new container, the following considerations must be made.
Supposing that the beams making up the frame, obtained through a pultrusion process, have a hollow rectangular cross section with suitable size and thickness, their modulus of elasticity will not be less than approximately 45000 MPa and their ultimate tensile stress will be approximately 600 MPa.
On the basis of the simulations made, considering a load of 40000 kg uniformly distributed on the bottom beams of the container, the result is that
the materials chosen ensure a maximum downward flexure at the mid line of no more than 55 mm and corresponding maximum stresses not exceeding approximately 100 MPa, except for strongly localized shearing phenomena to be studied and optimized later on, with corresponding peaks of approximately 130 Mpa.
From the considerations synthetically made above, it can be inferred that the total weight of the container in question will be approximately 1040 kg. Therefore, it is possible to state that the use of the composite materials described above allows to obtain for the container that is the subject of the invention a weight that is considerably lower than the weight of a container produced using traditional materials like, for example, steel. The new container therefore makes it possible to increase the transported weight, which means reducing the goods transport costs and facilitating the handling of the containers, in particular when they are completely empty. The characteristics of the present invention will be highlighted in greater detail in the following description, with reference to the drawings attached as non-limiting examples.
In particular, Figure 1 shows a three-dimensional view of the frame (T) of a container made with the new composite materials. Figure 2 shows in detail a corner of the new container, where it is possible to see also the shape of the section (Sm) of the upright (M) and of the sections (St) of the upper cross members (Tt).
The new container comprises a frame (T) made with composite beams in fibreglass-epoxy resin and in particular it comprises uprights (M), base cross members (Tb) and upper cross members (Tt) preferably having a hollow rectangular section. The side walls of the new container are made with sandwich panels (P)
having the outer layers in fibreglass-epoxy resin and the core in medium- density PVC foam.
Said panels are used for making the bottom, the top and the side walls, which comprise suitable accessories, such as inspection doors, loading/unloading openings and other devices with which the known containers are generally equipped.
Therefore, with reference to the above description and the attached drawings, the following claims are expressed.
Claims
1. New container for transporting goods, comprising a frame (T) that consists of uprights (Tm)3 bottom cross members (Tb) and top cross members (Tt) and bottom, top and side walls, characterized in that said frame (T) is entirely or partially made of section bars in composite material comprising fibreglass-epoxy resin obtained through pultrasion.
2. New container for transporting goods, comprising a frame (T) that consists of uprights (Tm), bottom cross members (Tb) and top cross members (Tt), and bottom, top and side walls, characterized in that said bottom and/or said side walls and/or said top are made with one or more panels (P), each of which is made of a composite material having a sandwich or layered structure, comprising: outer layers made of fibreglass-epoxy resin; core made of medium-density PVC foam.
3. New container for transporting goods according to claims I5 2, characterized in that it comprises: frame (T) entirely or partially constituted by said section bars in said composite material; bottom and/or side walls and/or top made with said panels (P) in said composite material having a sandwich or layered structure.
4. New container according to the previous claims, characterized in that said composite material used for making said section bars has a density of 1800 kg/m3.
5« New container according to claims 2, 3, characterized in that said panels for making said side walls have a weight of 5 kg/m2.
6. New container according to claims 2, 3, characterized in that said outer layers have a density of 1,700 kg/m3.
7« New container according to claims 2, 3, characterized in that said core has a density of 150 kg/m3.
8. New container according to claims 2, 3, 6, 1, characterized in that said panels (P) for making said bottom have a weight of 8 kg/m2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IT2006/000463 WO2007148347A1 (en) | 2006-06-19 | 2006-06-19 | Container made of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IT2006/000463 WO2007148347A1 (en) | 2006-06-19 | 2006-06-19 | Container made of composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007148347A1 true WO2007148347A1 (en) | 2007-12-27 |
Family
ID=37696120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IT2006/000463 WO2007148347A1 (en) | 2006-06-19 | 2006-06-19 | Container made of composite material |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2007148347A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011070145A1 (en) * | 2009-12-10 | 2011-06-16 | Dsm Ip Assets B.V. | Impact resistant freight container |
| US20150197929A1 (en) * | 2008-03-06 | 2015-07-16 | Stuart Charles Segall | Relocatable Habitat Unit |
| US9920513B2 (en) * | 2008-03-06 | 2018-03-20 | Stuart Charles Segall | Relocatable habitat unit |
| CN114261647A (en) * | 2021-12-24 | 2022-04-01 | 北京航星机器制造有限公司 | 40 chi container |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0349667A1 (en) * | 1988-07-08 | 1990-01-10 | FRIGOS srl | Container construction particularly for transport of perishable goods on a commercial vehicle |
| US5255806A (en) * | 1991-05-03 | 1993-10-26 | Stoughton Composites, Inc. | Reinforced plastic composite intermodal vehicle hauler |
| US5403062A (en) * | 1993-05-21 | 1995-04-04 | Stoughton Composites, Inc. | Panel joint for adhesively bonded wall panels |
| US5979684A (en) * | 1995-07-14 | 1999-11-09 | Toray Industries, Inc, | Cargo container |
| US20040262305A1 (en) * | 2003-06-30 | 2004-12-30 | Centec Corporation | ISO fittings for composite structures |
-
2006
- 2006-06-19 WO PCT/IT2006/000463 patent/WO2007148347A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0349667A1 (en) * | 1988-07-08 | 1990-01-10 | FRIGOS srl | Container construction particularly for transport of perishable goods on a commercial vehicle |
| US5255806A (en) * | 1991-05-03 | 1993-10-26 | Stoughton Composites, Inc. | Reinforced plastic composite intermodal vehicle hauler |
| US5403062A (en) * | 1993-05-21 | 1995-04-04 | Stoughton Composites, Inc. | Panel joint for adhesively bonded wall panels |
| US5979684A (en) * | 1995-07-14 | 1999-11-09 | Toray Industries, Inc, | Cargo container |
| US20040262305A1 (en) * | 2003-06-30 | 2004-12-30 | Centec Corporation | ISO fittings for composite structures |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150197929A1 (en) * | 2008-03-06 | 2015-07-16 | Stuart Charles Segall | Relocatable Habitat Unit |
| US9920513B2 (en) * | 2008-03-06 | 2018-03-20 | Stuart Charles Segall | Relocatable habitat unit |
| US10036157B2 (en) * | 2008-03-06 | 2018-07-31 | Stuart Charles Segall | Relocatable habitat unit |
| WO2011070145A1 (en) * | 2009-12-10 | 2011-06-16 | Dsm Ip Assets B.V. | Impact resistant freight container |
| WO2011070147A1 (en) * | 2009-12-10 | 2011-06-16 | Dsm Ip Assets B.V. | Impact resistant freight container |
| CN102656100A (en) * | 2009-12-10 | 2012-09-05 | 帝斯曼知识产权资产管理有限公司 | Impact resistant freight container |
| CN114261647A (en) * | 2021-12-24 | 2022-04-01 | 北京航星机器制造有限公司 | 40 chi container |
| CN114261647B (en) * | 2021-12-24 | 2023-08-08 | 北京航星机器制造有限公司 | 40-ruler container |
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