EP0092888B1 - Stackable box - Google Patents
Stackable box Download PDFInfo
- Publication number
- EP0092888B1 EP0092888B1 EP19830200589 EP83200589A EP0092888B1 EP 0092888 B1 EP0092888 B1 EP 0092888B1 EP 19830200589 EP19830200589 EP 19830200589 EP 83200589 A EP83200589 A EP 83200589A EP 0092888 B1 EP0092888 B1 EP 0092888B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- box
- profiles
- posts
- tubular
- stackable
- 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.)
- Expired
Links
- 230000007423 decrease Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 238000005192 partition Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 235000012015 potatoes Nutrition 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0234—Nestable or stackable container parts forming a receptacle when one part is inverted upon the other
-
- 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
- B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
- B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
- B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
- B65D21/0215—Containers with stacking feet or corner elements
Definitions
- the invention relates to a stackable box from plastic, which at or near the corners is provided with posts extending above the side walls and with cavities which receive these posts when the boxes are stacked in pairs, face-to-face.
- Boxes of this type are used, for example, for storage and transport of agricultural and horticultural products.
- the posts and cavities should be provided in such a manner that when boxes covered with lids are stacked in face-to-face pairs, to save space, the posts do not stick out into the opposite box.
- the total weight of the stacked boxes bears on the posts of the bottom box.
- the posts must be capable of resisting this load without being deformed, because otherwise the stack is in danger of leaning over or even collapsing.
- the maximum allowable stack height is thus determined by the strength of the posts.
- the side-walls of the box run at the corners at an angle, to form an octagonal shape.
- a post is provided on the outside of the side walls having a triangular cross-section, one side forming part of the side wall. Adjacent to the posts there are triangular cavities with one side open to the exterior of the box. The load-bearing power of these posts is relatively low. Further, the niche-shape of the cavities does not add strength to the corner construction. As a result, the allowable stack height and hence also the efficiency with which the storage room can be used are low.
- the invention provides a stackable box with a corner construction in which the posts as well as the cavities contribute to the load-bearing capacity.
- the partition wall runs through the centre of the profile, which is thus divided into two similar tubular sub-profiles having, for example, a triangular, rectangular or trapezoid cross section, depending on the angle at which the partition meets the side walls of the box.
- tubular corner profiles are square in cross section and are divided into two tubular sub-profiles of similar triangular cross section by a diagonal wall meeting the adjacent side walls of the box at an obtuse angle.
- the corner profiles are square in cross section and the partition walls meet one of the side walls of the box at a right angle.
- Boxes with partition walls provided in this way offer the advantage that face-to-face stacking can occur with less difficulty as long as during stacking care is taken that the walls which pass each other first are the ones which the partition walls meet at a right angle.
- rectangular boxes it is therefore preferred in this case to provide the partition walls at a right angle with a long side wall, because these boxes are usually taken hold of at the short side walls.
- the posts and the cavities are preferably so made that the cross section of the posts decreases towards the top.
- an arresting surface may have been provided, with which the box rests on the posts of the underlying box in a stack.
- tubular sub-profiles forming the posts and the tubular sub-profiles forming the cavities may terminate at different distances below the bottom. Boxes stacked bottom to bottom will then lie with the tubes unshiftably against one another, so that the forces occurring in a stacked assembly cannot act on the bottom.
- the bottoms of the boxes may have been provided with ribs so excentrically positioned with respect to the center line of the box that when boxes are stacked bottom to bottom the ribs of one box project between ' the ribs of the other.
- the box consists of a bottom 1, two long side walls 2 and two short side walls 3. At the corners of the box, the side walls join tubular profiles 4 having a square cross section. The profiles are by a diagonal wall 5, which meets the adjacent side walls at an angle of 135°, divided into two triangular tubular profiles, one of which points to the middle of the box and the other to the outside. At one pair of opposite corners the inner triangular tubes have been extended above the side walls to form posts 6, and at the other pair the outer triangular tubes, while the other tubes form cavities 7 running along the entire height of the box.
- the box has been made by injection moulding of a thermoplastic, such as polyethylene, polypropylene or polystyrene.
- the posts 6 project into the cavities 7.
- the posts are slightly tapered in design.
- cams or cross-ribs 8 have been provided, which form arresting surfaces 9 with which the box can rest on the column 6' of an underlying box when the boxes are stacked top-to-bottom.
- the tubular profile 4 projects below the bottom 1 of the box, with the post-forming part 6 of the tubular profile 4 projecting a little further below the bottom 1 of the box than the cavity-forming part 7 of the tubular profile.
- these parts are indicated by 10 and 11 respectively.
- the bottom of the box has on the lower side been rigidified by means of ribs which have been positioned so excentrically with respect to the centre line of the box that with bottom-to-bottom stacking the ribs of one box project between the ribs of another.
- the ribs 12 and 13 project as far from the bottom 1 of the box as part 10 of the tubular profile. This is of importance in the case of transportation of the boxes on roller conveyors.
- a variation of a box according to the invention is represented, with bottom 14, short side walls 15 and long side walls 16.
- the tubular profiles 17 are situated, which are this time by partition walls 18 perpendicular to the side walls 16 divided into two tubes of similar cross section, one of which has been extended to form a post 19, the other forming a cavity 20 for insertion of a post of another box in the case of face-to-face stacking.
- the cross section of the posts decreases towards the top, resulting in bevels 21.
- a and B represent a bottom and a top view, respectively, of a box with tubes of triangular cross section
- C and D represent a bottom and a top view, respectively, of a box with tubes of rectangular cross section.
- A', B', C' and D' schematically represent the side views of the boxes A, B, C and D.
- the posts 22, 23, 24 and 25 of box B are in A referred to as 22', 23', 24' and 25'.
- the posts 26, 27, 28 and 29 of box D are referred to as 26 27', 28' and 29' in box C.
- box C When box C is to be stacked on box D, however, once post 26' of box C has been moved over (arrow P) or past (arrow Q) post 26 of box D the box can be put in place without further awkward turning motions or high lifting.
- the boxes according to the invention can be used, for example, for hot-bed germination of seed-potatoes.
- boxes of, for example, 400 x 600 mm, each filled with approx. 12 kg of potatoes are stacked on each other in a room of well-defined temperature and humidity.
- the boxes have a height of, for example, 100 mm and are kept apart by posts which project about 80 mm above the top rim of the box, to enable ventilation-air flow between the boxes. Further, the bottom and the side walls may have been provided with openings for ventilation. Without the danger of deformation of the posts, thirty filled boxes can be stacked on each other, to a height of 5.5-6 m. In this way, the conditioning room is optimally utilized.
- tubular corner profiles may, for example, also be realized as rectangulars, which by a wall through their middle are divided into two similar triangular, rectangular or trapezoid tubes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Stackable Containers (AREA)
Description
- The invention relates to a stackable box from plastic, which at or near the corners is provided with posts extending above the side walls and with cavities which receive these posts when the boxes are stacked in pairs, face-to-face.
- A similar box is known from FR-A-2 385 596.
- Boxes of this type are used, for example, for storage and transport of agricultural and horticultural products. When filled boxes are stacked, they are kept apart by the posts, so that the bottom of one box does not touch the products in another. The posts and cavities should be provided in such a manner that when boxes covered with lids are stacked in face-to-face pairs, to save space, the posts do not stick out into the opposite box.
- In a stack, the total weight of the stacked boxes bears on the posts of the bottom box. The posts must be capable of resisting this load without being deformed, because otherwise the stack is in danger of leaning over or even collapsing.
- The maximum allowable stack height is thus determined by the strength of the posts.
- In the known design, the side-walls of the box run at the corners at an angle, to form an octagonal shape. On the outside of the side walls, at each corner a post is provided having a triangular cross-section, one side forming part of the side wall. Adjacent to the posts there are triangular cavities with one side open to the exterior of the box. The load-bearing power of these posts is relatively low. Further, the niche-shape of the cavities does not add strength to the corner construction. As a result, the allowable stack height and hence also the efficiency with which the storage room can be used are low.
- The invention provides a stackable box with a corner construction in which the posts as well as the cavities contribute to the load-bearing capacity.
- This is achieved by providing the corners of the box, according to the invention, with tubular profiles of rectangular cross section, each profile being divided by a wall into two tubular sub-profiles of similar cross section, one of which cross sections having an angle formed by two adjacent side walls of the box and one of which sub-profiles being extended above the side walls of the box to form a post and, the other forming a cavity for insertion of a post of another box in the case of face-to-face stacking.
- By using these tubular profiles, a high strength of the posts and a high rigidity of the corner construction of the box are obtained, enabling stable stacking to a great height. The partition wall runs through the centre of the profile, which is thus divided into two similar tubular sub-profiles having, for example, a triangular, rectangular or trapezoid cross section, depending on the angle at which the partition meets the side walls of the box.
- By preference, the tubular corner profiles are square in cross section and are divided into two tubular sub-profiles of similar triangular cross section by a diagonal wall meeting the adjacent side walls of the box at an obtuse angle.
- In a highly preferable embodiment, the corner profiles are square in cross section and the partition walls meet one of the side walls of the box at a right angle. Boxes with partition walls provided in this way offer the advantage that face-to-face stacking can occur with less difficulty as long as during stacking care is taken that the walls which pass each other first are the ones which the partition walls meet at a right angle. With rectangular boxes it is therefore preferred in this case to provide the partition walls at a right angle with a long side wall, because these boxes are usually taken hold of at the short side walls.
- For fast stacking, and to enable proper centring of the posts in the cavities, the posts and the cavities are preferably so made that the cross section of the posts decreases towards the top.
- In the posts, at some distance from the bottom an arresting surface may have been provided, with which the box rests on the posts of the underlying box in a stack.
- The tubular sub-profiles forming the posts and the tubular sub-profiles forming the cavities may terminate at different distances below the bottom. Boxes stacked bottom to bottom will then lie with the tubes unshiftably against one another, so that the forces occurring in a stacked assembly cannot act on the bottom.
- At their lower surface, the bottoms of the boxes may have been provided with ribs so excentrically positioned with respect to the center line of the box that when boxes are stacked bottom to bottom the ribs of one box project between' the ribs of the other.
- The invention will be further explained with reference to the embodiment represented in the drawing, which serves as an example.
- Fig. 1 is a top view of a box according to the invention;
- Fig. 2 is a bottom view of this box;
- Fig. 3 is a side view of the various ways of stacking the boxes;
- Fig. 4 is a sectional view along line IV-IV in Fig. 2 with face-to-face stacking.
- Fig. 5 is a top view of a box according to a variation of the invention and
- Fig. 6 is a schematic representation of face-to-face stacking of boxes according to Fig. 5.
- The box consists of a
bottom 1, twolong side walls 2 and twoshort side walls 3. At the corners of the box, the side walls jointubular profiles 4 having a square cross section. The profiles are by adiagonal wall 5, which meets the adjacent side walls at an angle of 135°, divided into two triangular tubular profiles, one of which points to the middle of the box and the other to the outside. At one pair of opposite corners the inner triangular tubes have been extended above the side walls to formposts 6, and at the other pair the outer triangular tubes, while the other tubes formcavities 7 running along the entire height of the box. The box has been made by injection moulding of a thermoplastic, such as polyethylene, polypropylene or polystyrene. - When the boxes are placed oppositely against each other (Figs. 3 and 4), the
posts 6 project into thecavities 7. The posts are slightly tapered in design. At a short distance from the bottoms of the posts, cams or cross-ribs 8 have been provided, which form arrestingsurfaces 9 with which the box can rest on the column 6' of an underlying box when the boxes are stacked top-to-bottom. - The
tubular profile 4 projects below thebottom 1 of the box, with thepost-forming part 6 of thetubular profile 4 projecting a little further below thebottom 1 of the box than the cavity-formingpart 7 of the tubular profile. In Figure 4, these parts are indicated by 10 and 11 respectively. When boxes are stacked bottom to bottom, one box rests with theparts parts ribs bottom 1 of the box aspart 10 of the tubular profile. This is of importance in the case of transportation of the boxes on roller conveyors. - In Fig. 5, a variation of a box according to the invention is represented, with
bottom 14,short side walls 15 andlong side walls 16. Again, in the four corners thetubular profiles 17 are situated, which are this time bypartition walls 18 perpendicular to theside walls 16 divided into two tubes of similar cross section, one of which has been extended to form apost 19, the other forming acavity 20 for insertion of a post of another box in the case of face-to-face stacking. The cross section of the posts decreases towards the top, resulting inbevels 21. The advantage of this box in stacking is explained with reference to Fig. 6, where A and B represent a bottom and a top view, respectively, of a box with tubes of triangular cross section, and C and D represent a bottom and a top view, respectively, of a box with tubes of rectangular cross section. A', B', C' and D' schematically represent the side views of the boxes A, B, C and D. Theposts posts posts - In the case of a high stack, with vision of the top of the stack being blocked, this will make stacking of the top box difficult.
- When box C is to be stacked on box D, however, once post 26' of box C has been moved over (arrow P) or past (arrow Q)
post 26 of box D the box can be put in place without further awkward turning motions or high lifting. - The boxes according to the invention can be used, for example, for hot-bed germination of seed-potatoes. In this application, boxes of, for example, 400 x 600 mm, each filled with approx. 12 kg of potatoes, are stacked on each other in a room of well-defined temperature and humidity. The boxes have a height of, for example, 100 mm and are kept apart by posts which project about 80 mm above the top rim of the box, to enable ventilation-air flow between the boxes. Further, the bottom and the side walls may have been provided with openings for ventilation. Without the danger of deformation of the posts, thirty filled boxes can be stacked on each other, to a height of 5.5-6 m. In this way, the conditioning room is optimally utilized.
- The invention is not restricted to the example described. The tubular corner profiles may, for example, also be realized as rectangulars, which by a wall through their middle are divided into two similar triangular, rectangular or trapezoid tubes.
Claims (10)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL8201758 | 1982-04-28 | ||
NL8201758 | 1982-04-28 | ||
NL8202095A NL8202095A (en) | 1982-04-28 | 1982-05-21 | STACKABLE BIN. |
NL8202095 | 1982-05-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0092888A1 EP0092888A1 (en) | 1983-11-02 |
EP0092888B1 true EP0092888B1 (en) | 1987-03-18 |
Family
ID=26645770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19830200589 Expired EP0092888B1 (en) | 1982-04-28 | 1983-04-23 | Stackable box |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0092888B1 (en) |
DE (1) | DE3370310D1 (en) |
NL (1) | NL8202095A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4425569A1 (en) * | 1994-07-20 | 1996-01-25 | Berolina Kunststoff | Crate with compartments for bottles or bags |
EP2484599B1 (en) * | 2011-02-04 | 2014-06-04 | Plastica Sud - S.R.L. Di A. Caiazzo & C. | Box adapted to be stacked and inserted into another identical specimen of the same box. |
NL2019079B1 (en) * | 2017-06-15 | 2018-12-24 | Proti Farm R & D B V | Container and combination of container and spawn structure |
CN110206795B (en) * | 2019-06-10 | 2023-12-26 | 江苏凯创电子科技有限公司 | Device for instrument stacking or connection exchange |
CN113331963B (en) * | 2021-06-08 | 2023-06-02 | 郑州大学第一附属医院 | Nursing collection box for infectious department |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE817424A (en) * | 1974-07-09 | 1974-11-04 | BOX. | |
DE2617050C2 (en) * | 1976-04-17 | 1985-01-31 | Spumalit-Anstalt, 9494 Schaan | Transport boxes made of plastic, in particular for the transport of fruit and vegetables |
BE865459A (en) * | 1977-04-01 | 1978-09-29 | Franz Delbrouck G M B H | STACKABLE CAGE |
DE2714623C3 (en) * | 1977-04-01 | 1985-08-01 | Franz Delbrouck Gmbh, 5750 Menden | Stackable crate |
US4304334A (en) * | 1979-11-13 | 1981-12-08 | North American Beverage Cases, Inc. | Nestable and stackable bottle case |
-
1982
- 1982-05-21 NL NL8202095A patent/NL8202095A/en not_active Application Discontinuation
-
1983
- 1983-04-23 DE DE8383200589T patent/DE3370310D1/en not_active Expired
- 1983-04-23 EP EP19830200589 patent/EP0092888B1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0092888A1 (en) | 1983-11-02 |
NL8202095A (en) | 1983-11-16 |
DE3370310D1 (en) | 1987-04-23 |
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