EP0375643B1 - A waterproof box or cover blank - Google Patents

A waterproof box or cover blank Download PDF

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Publication number
EP0375643B1
EP0375643B1 EP89850426A EP89850426A EP0375643B1 EP 0375643 B1 EP0375643 B1 EP 0375643B1 EP 89850426 A EP89850426 A EP 89850426A EP 89850426 A EP89850426 A EP 89850426A EP 0375643 B1 EP0375643 B1 EP 0375643B1
Authority
EP
European Patent Office
Prior art keywords
blank
slots
waterproof
folding lines
box
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 - Lifetime
Application number
EP89850426A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0375643A1 (en
Inventor
Knut Hallquist
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Norpapp Industri AS
Original Assignee
Norpapp Industri AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Norpapp Industri AS filed Critical Norpapp Industri AS
Priority to AT89850426T priority Critical patent/ATE75683T1/de
Publication of EP0375643A1 publication Critical patent/EP0375643A1/en
Application granted granted Critical
Publication of EP0375643B1 publication Critical patent/EP0375643B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

  • 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.
  • 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.
  • such boxes were manufactured from expanded plastic, e.g. polystyrene.
  • 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.
  • packings are permitted for transport on trucks, in spite of the fact that quite considerable volumes of water may leak from one single crate.
  • 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.
  • 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.
  • 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 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.
  • Sheet 1 is on both sides coated by a plastic film 10, and 11, respectively.
  • the plastic films are slightly larger than sheet 1 to form a projecting 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 or slots 2, 3, 4, and 5 are wide enough to provide space for welding tools, and a double weld 13, 14 is provided in the plastic material inside the slots. Between welds 13, 14 a slot 15 is provided in the plastic material.
  • Figure 3 shows a box or crate mounted from the blank of Figure 6. Corner flaps 16, 17, 18, and 19 are folded inside the end flaps, and corner flaps and end flaps are are joined by the aid of 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.
  • FIG 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 the edges 24 by the aid of a weld 25.
  • This blank has no slots or incisions. It is only provided with folding lines 26 and 27 extending in parallel with the edges of the sheet, and a diagonal folding line 28 for forming a corner, as shown in Figure 5.
  • the corner flap formed by folding lines 26, 27 is folded to form an inclined fold about folding line 28. In this manner completely waterproof corner joints are achieved in the box.
  • slots 2, 3, 4, 5 extend into the blank past the longitudinal folding lines 6,7. In a folded box this extension will form drainage openings at the corners of the bottom. It will aslo appear from Figure 1 and the enlarged detail that slots 2, 3, 4, 5 are displaced relative to transverse folding lines 8, 9, so that the projections of said folding lines extend adjacent to the edge of the slots facing corner flaps 16, 17, 18, 19. The reason for this is that in this manner only a minimum of the material of the corner flaps is removed. Most of the blank material which has vertical corrugations in a mounted state and is, thus, most suited to absorb loads, will thus be maintained.
  • Figure 6 illustrates a blank 1 for mounting a crate or a box.
  • slots 2, 3, 4, and 5 extend inwards from the short sides of the blank, as opposed to the blank of the cover, as shown in Figure 1, in which the slots extend inwards from the long sides of the blank.
  • Both in Figure 1 and in Figure 6 the directions of corrugations of the corrugated paperboard are indicated. In both cases the directions of corrugations is transversal to the longitudinal direction of slots 2, 3, 4, 5.
  • corner flaps 16, 17, 18, 19 are folded along the longitudinal sides of the blank, whereas flaps 16, 17, 18, 19 in the crate blank are folded along the short sides.
EP89850426A 1988-12-16 1989-12-05 A waterproof box or cover blank Expired - Lifetime EP0375643B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89850426T ATE75683T1 (de) 1988-12-16 1989-12-05 Zuschnitt fuer eine wasserdichte schachtel oder abdeckung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO885602 1988-12-16
NO885602A NO171545C (no) 1988-12-16 1988-12-16 Vannfast kasse- eller lokkemne

Publications (2)

Publication Number Publication Date
EP0375643A1 EP0375643A1 (en) 1990-06-27
EP0375643B1 true 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 (da)
AT (1) ATE75683T1 (da)
CA (1) CA2005705A1 (da)
DE (1) DE68901455D1 (da)
DK (1) DK167059B1 (da)
ES (1) ES2031392T3 (da)
FI (1) FI93816C (da)
GR (1) GR3004873T3 (da)
IS (1) IS1561B (da)
NO (1) NO171545C (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2719288B1 (fr) * 1994-04-28 1996-07-19 Sca Emballage France Emballage en forme de conteneur, procédé de réalisation d'un tel emballage et installation pour la mise en Óoeuvre du procédé.
FR2719289B1 (fr) * 1994-04-28 1996-07-19 Sca Emballage France Perfectionnement à la protection des emballages en carton ou matériau similaire.
FR2763560B1 (fr) * 1997-03-27 1999-07-23 Alain Pasco Dispositif pour la fabrication en continu de flans composites, flans ainsi realises et emballages obtenus a partir desdits flans

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1354026A (fr) * 1963-04-25 1964-02-28 Stamicarbon Procédé pour la fabrication de sacs à double paroi, munis d'une feuille intercalaire disposée entre les parois
FR2562870B1 (fr) * 1984-04-13 1986-07-18 Socar Conditionnement resistant a l'humidite, apte a etre obture de facon etanche par un film de matiere plastique

Also Published As

Publication number Publication date
NO885602D0 (no) 1988-12-16
DK167059B1 (da) 1993-08-23
IS3526A7 (is) 1990-06-17
IS1561B (is) 1994-10-05
NO885602L (no) 1990-06-18
FI93816C (fi) 1995-06-12
EP0375643A1 (en) 1990-06-27
NO171545B (no) 1992-12-21
FI93816B (fi) 1995-02-28
ES2031392T3 (es) 1992-12-01
ATE75683T1 (de) 1992-05-15
DE68901455D1 (de) 1992-06-11
GR3004873T3 (da) 1993-04-28
DK600389D0 (da) 1989-11-29
CA2005705A1 (en) 1990-06-16
FI895632A0 (fi) 1989-11-24
NO171545C (no) 1993-03-31
DK600389A (da) 1990-06-17

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