EP0375643A1 - A waterproof box or cover blank - Google Patents
A waterproof box or cover blank Download PDFInfo
- Publication number
- EP0375643A1 EP0375643A1 EP89850426A EP89850426A EP0375643A1 EP 0375643 A1 EP0375643 A1 EP 0375643A1 EP 89850426 A EP89850426 A EP 89850426A EP 89850426 A EP89850426 A EP 89850426A EP 0375643 A1 EP0375643 A1 EP 0375643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- slots
- waterproof
- box
- folding lines
- 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
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
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/40—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper specially constructed to contain liquids
-
- 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
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/42—Details of containers or of foldable or erectable container blanks
- B65D5/62—External coverings or coatings
Definitions
- Such blanks are used to form a number of different kinds of boxes and crates.
- the blanks are transported in the flat from the packing factory to the user and are mounted, often mechanically, at the user's place.
- Such boxes or crates which are produced from a non-waterproof material, cannot be used for moist goods or goods setting free moisture, and neither can they be used in a moist environment.
- Such blanks being inexpensive, many efforts have been made to make them waterproof, so that they may be used under conditions as mentioned above. There is, e.g. a great demand for packing material for fish to be transported in an iced state over long distances.
- such boxes were manufactured from expanded plastic, e.g. polystyrene.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cartons (AREA)
- Connection Or Junction Boxes (AREA)
- Packages (AREA)
- Refrigerator Housings (AREA)
- Structure And Mechanism Of Cameras (AREA)
- Table Devices Or Equipment (AREA)
- Closures For Containers (AREA)
- Casings For Electric Apparatus (AREA)
- Wrappers (AREA)
Abstract
Description
- The present invention relates to a waterproof box or cover blank comprising a flat sheet of a material that is not waterproof, e.g. corrugated cardboard, with folding lines and, if desired, with incisions for forming flaps.
- Such blanks are used to form a number of different kinds of boxes and crates. The blanks are transported in the flat from the packing factory to the user and are mounted, often mechanically, at the user's place. Such boxes or crates which are produced from a non-waterproof material, cannot be used for moist goods or goods setting free moisture, and neither can they be used in a moist environment. Such blanks being inexpensive, many efforts have been made to make them waterproof, so that they may be used under conditions as mentioned above. There is, e.g. a great demand for packing material for fish to be transported in an iced state over long distances. Previously, such boxes were manufactured from expanded plastic, e.g. polystyrene. Such boxes are relatively expensive in manufacture, as well as being bulky in transport, since they cannot be manufactured in a flat state. Nowadays, there is also considerable resistance in many countries against use of such packing material, because when destructed it gives off substances that may destroy the ozone layer of the atmosphere. Experiments to make non-waterproof material waterproof involved lamination with a watertight film on both sides. However, no sealing of the edges is achieved, and the packing may thus be destroyed by water penetrating into it through the edges. Also, efforts were made to line such packing material by the aid of a bag-shaped lining which is attached to the folding sheet. This would, however, be an expensive measure, as well as being undesirable to the user, as such a lining must be inserted after the box has been mounted.
- As regards transport of fish, which is an important application in connection with the present invention, boxes or crates of the mentioned kind, in which the flaps are formed by the aid of slots or incisions, can only be used in cases when it is acceptable that water seeps from the crates. Such a packing cannot be waterproof as water may flow through said slots. For the time being, such packings are permitted for transport on trucks, in spite of the fact that quite considerable volumes of water may leak from one single crate. In this connection, it should be mentioned that approximately 4-7 kgs of ice are used in a fish crate and in the worst case all ice may melt during transport. A truck driving with such a load would, thus, sprinkle thousands of litres of water on the road, which may make the road surface slippery. It is, thus, to be expected that such transport will be prohibited in the future. As regards air freight, packings must be completely tight. No leakage of liquid is permitted from goods transported by air. Packing crates used for fish for air freight comprise an external waterproof box with a perforated double bottom and an absorbing material provided between said double bottom and the external bottom of the box.
- It is an object of the present invention to provide a waterproof crate or cover blank, based on a flat sheet of a non-waterproof material, e.g. corrugated paperboard with folding lines and, if desired, incisions forming flaps, out of which blank a box or a crate may be mounted.
- According to the invention this is achieved by the fact that said blank is on both sides coated by a waterproof plastic film, which films are joined by welding outside the external edges of the blank, and by the fact that said plastic films are loosely arranged, i.e. not attached to the flat sheet of non-waterproof material.
- By means of the invention several advantages are obtained. Primarily the production of the blank will be inexpensive.
- Because the plastic films are loosely arranged outside of the blank, a good thermic insulation is obtained in that a layer of air is formed between the plastic film and the corrugated paper board blank. A second essential advantage obtained by the fact that the plastic film is loose in relation to the corrugated paper board, consist in easy removal of the plastic film for recirculation or destruction by means of fire.
- A special embodiment in which the blank is provided with incisions or slots to form flaps, is characterized by the fact that the plastic films are also welded together in the incisions or slots and split centrally in the slot, said slots having such a width that there is space enough for welding and slotting tools.
- Further features of the invention will appear from dependent claims 2-5.
- The invention is disclosed in more detail below with reference to the drawings showing embodiments of the invention.
- Figure 1 shows a plane blank according to the invention, which is intended for mounting a cover,
- Figure 2 is a section along line II-II in Figure 1,
- Figure 3 shows the blank in an mounted state in the form of a fish crate,
- Figure 4 shows a section of a box or cover blank of another kind,
- Figure 5 shows a corner of a box or cover which is mounted from the blank of Figure 4, and
- Figure 6 shows a flat blank intended for being mounted to form a box.
- A plane sheet of a non-waterproof material 1, in this embodiment consisting of corrugated paperboard, is provided with
slots longitudinal folding lines rim 12 outside the edge of sheet 1.Edges 12 of films 10 and 11 are bonded so that sheet 1 is placed inside a watertightly sealed bag. Incisions orslots double weld 13, 14 is provided in the plastic material inside the slots. Between welds 13, 14 aslot 15 is provided in the plastic material. - Figure 3 shows a box or crate mounted from the blank of Figure 1.
Corner flaps staples 20. A corresponding box may be manufactured by the aid of a blank, in which slots extend inwards from the edges at the ends. - Figure 4 shows a section of a waterproof box or crate blank which, in the same manner as disclosed in connection with Figure 1, consists of a
sheet 21 of a non-waterproof material, which is on both sides coated by a plastic film 22, 23, the films being bonded at theedges 24 by the aid of aweld 25. This blank has no slots or incisions. It is only provided withfolding lines diagonal folding line 28 for forming a corner, as shown in Figure 5. The corner flap formed byfolding lines folding line 28. In this manner completely waterproof corner joints are achieved in the box. - As will appear from Figure 1 of the drawing,
slots longitudinal folding lines slots corner flaps - Figure 6 illustrates a blank 1 for mounting a crate or a box. As will appear from the drawing,
slots slots corner flaps flaps - By choosing the direction of corrugation as explained above relative to the folding of corner flaps, corners having vertical corrugations in several plies are achieved. This provides packings which have a good capability of absorbing vertical loads. The same is true of the embodiment according to Figures 4 and 5.
Claims (5)
characterized in that plastic films (10, 11) are bonded in slots (2,3,4,5) and split centrally in the slots, said slots having a width which is sufficient for welding and slotting tools.
characterized in that the corrugations of the corrugated paperboard extend transversal to the direction of incisions.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT89850426T ATE75683T1 (en) | 1988-12-16 | 1989-12-05 | CUT FOR A WATERPROOF BOX OR COVER. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO885602 | 1988-12-16 | ||
NO885602A NO171545C (en) | 1988-12-16 | 1988-12-16 | WATERPROOF CASE OR COVER |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0375643A1 true EP0375643A1 (en) | 1990-06-27 |
EP0375643B1 EP0375643B1 (en) | 1992-05-06 |
Family
ID=19891529
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89850426A Expired - Lifetime EP0375643B1 (en) | 1988-12-16 | 1989-12-05 | A waterproof box or cover blank |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP0375643B1 (en) |
AT (1) | ATE75683T1 (en) |
CA (1) | CA2005705A1 (en) |
DE (1) | DE68901455D1 (en) |
DK (1) | DK167059B1 (en) |
ES (1) | ES2031392T3 (en) |
FI (1) | FI93816C (en) |
GR (1) | GR3004873T3 (en) |
IS (1) | IS1561B (en) |
NO (1) | NO171545C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2719289A1 (en) * | 1994-04-28 | 1995-11-03 | Sca Emballage France | Packaging container, e.g. for fruit or vegetables |
FR2719288A1 (en) * | 1994-04-28 | 1995-11-03 | Sca Emballage France | Packing container, e.g. for fruit and vegetables |
WO1998043804A1 (en) * | 1997-03-27 | 1998-10-08 | Alain Pasco | Device for continuous making of composite blanks, resulting blanks and packages produced from same |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1354026A (en) * | 1963-04-25 | 1964-02-28 | Stamicarbon | Process for the production of double-walled bags, provided with an interlayer sheet disposed between the walls |
FR2562870A1 (en) * | 1984-04-13 | 1985-10-18 | Socar | Moisture-resistant packaging which is capable of being closed off in a sealed manner by a plastic film |
-
1988
- 1988-12-16 NO NO885602A patent/NO171545C/en unknown
-
1989
- 1989-11-24 FI FI895632A patent/FI93816C/en not_active IP Right Cessation
- 1989-11-28 IS IS3526A patent/IS1561B/en unknown
- 1989-11-29 DK DK600389A patent/DK167059B1/en not_active IP Right Cessation
- 1989-12-05 AT AT89850426T patent/ATE75683T1/en active
- 1989-12-05 DE DE8989850426T patent/DE68901455D1/en not_active Expired - Fee Related
- 1989-12-05 ES ES198989850426T patent/ES2031392T3/en not_active Expired - Lifetime
- 1989-12-05 EP EP89850426A patent/EP0375643B1/en not_active Expired - Lifetime
- 1989-12-15 CA CA002005705A patent/CA2005705A1/en not_active Abandoned
-
1992
- 1992-06-11 GR GR920401215T patent/GR3004873T3/el unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1354026A (en) * | 1963-04-25 | 1964-02-28 | Stamicarbon | Process for the production of double-walled bags, provided with an interlayer sheet disposed between the walls |
FR2562870A1 (en) * | 1984-04-13 | 1985-10-18 | Socar | Moisture-resistant packaging which is capable of being closed off in a sealed manner by a plastic film |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2719289A1 (en) * | 1994-04-28 | 1995-11-03 | Sca Emballage France | Packaging container, e.g. for fruit or vegetables |
FR2719288A1 (en) * | 1994-04-28 | 1995-11-03 | Sca Emballage France | Packing container, e.g. for fruit and vegetables |
WO1998043804A1 (en) * | 1997-03-27 | 1998-10-08 | Alain Pasco | Device for continuous making of composite blanks, resulting blanks and packages produced from same |
FR2763560A1 (en) * | 1997-03-27 | 1998-11-27 | Alain Pasco | DEVICE FOR THE CONTINUOUS MANUFACTURE OF COMPOSITE BLANKS, BLANKS THUS PRODUCED AND PACKAGES OBTAINED FROM SAID BLANKS |
Also Published As
Publication number | Publication date |
---|---|
NO885602D0 (en) | 1988-12-16 |
FI93816C (en) | 1995-06-12 |
NO171545B (en) | 1992-12-21 |
IS1561B (en) | 1994-10-05 |
ATE75683T1 (en) | 1992-05-15 |
NO885602L (en) | 1990-06-18 |
EP0375643B1 (en) | 1992-05-06 |
DK600389A (en) | 1990-06-17 |
DK167059B1 (en) | 1993-08-23 |
NO171545C (en) | 1993-03-31 |
FI93816B (en) | 1995-02-28 |
IS3526A7 (en) | 1990-06-17 |
GR3004873T3 (en) | 1993-04-28 |
DK600389D0 (en) | 1989-11-29 |
DE68901455D1 (en) | 1992-06-11 |
FI895632A0 (en) | 1989-11-24 |
ES2031392T3 (en) | 1992-12-01 |
CA2005705A1 (en) | 1990-06-16 |
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