EP0649735A1 - Method for manufacturing cardboard boxes, and box obtained with this method - Google Patents

Method for manufacturing cardboard boxes, and box obtained with this method Download PDF

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Publication number
EP0649735A1
EP0649735A1 EP94500166A EP94500166A EP0649735A1 EP 0649735 A1 EP0649735 A1 EP 0649735A1 EP 94500166 A EP94500166 A EP 94500166A EP 94500166 A EP94500166 A EP 94500166A EP 0649735 A1 EP0649735 A1 EP 0649735A1
Authority
EP
European Patent Office
Prior art keywords
lugs
box
chamfered edges
sheets
edges
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
Application number
EP94500166A
Other languages
German (de)
French (fr)
Other versions
EP0649735B1 (en
Inventor
Pedro Teixidor Casanovas
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.)
Paper SA
Original Assignee
Paper SA
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
Priority claimed from ES09302232A external-priority patent/ES2106654B1/en
Application filed by Paper SA filed Critical Paper SA
Publication of EP0649735A1 publication Critical patent/EP0649735A1/en
Application granted granted Critical
Publication of EP0649735B1 publication Critical patent/EP0649735B1/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
    • B65D5/42—Details of containers or of foldable or erectable container blanks
    • B65D5/4279—Joints, seams, leakproof joints or corners, special connections between panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/50—Construction of rigid or semi-rigid containers covered or externally reinforced
    • B31B2120/501—Construction of rigid or semi-rigid containers covered or externally reinforced by applying wrapping material only on the side wall part of a box

Definitions

  • the present invention refers to a method for manufacturing cardboard boxes, and to a box obtained with this method.
  • a method for manufacturing cardboard boxes which is described in Spanish Patent application no. 9306188 (PAPER, S.A.), starts from separate sheets, with lugs on the sides and flaps at the ends facing each other two by two. These sheets are applied onto the external faces of a mandrel, along which the various steps of the method are carried out to provide a rectangular prismatic body whose bases are provided with open flaps and whose edges are reinforced by folded lugs glued to the sides of the body, beside the edges.
  • the method object of the aforesaid patent provides other advantages which are, in summary: the possibility of some sides of the box being of different quality and thickness than the others, or presenting fibres running in different directions in order to withstand stresses in any direction.
  • the method of the invention is characterized in that the lugs which project from the sides of the sheets are applied and joined together over chamfered edges provided on the mandrel. These chamfered edges are situated between two adjacent sides of the mandrel.
  • At least one of the pairs of sheets from which the box is obtained presents prolongations from the respective lugs. These prolongations are applied and joined to an adjacent zone of the sheet, immediately beside the chamfered edges upon which the lugs in question are applied.
  • all the sheets from which the box is obtained present prolongations from their respective lugs. These prolongations are applied and joined to a zone of the sheet immediately adjacent to the chamfered edges upon which the lugs in question are applied.
  • the box obtained with the method described is provided with chamfered edges which alternate with its sides and on which are superimposed and glued the folded lugs of the adjacent sheets, forming two cant edges between each pair of sheets.
  • At least one of the superimposed lugs forming the chamfered edges of the box presents a prolongation folded and glued onto the adjacent side, beside the chamfered edges.
  • each of the superimposed lugs which form the chamfered edges of the box present corresponding prolongations folded and glued onto the adjacent side, beside the chamfered edges.
  • Figure 1 is a schematic cross-section showing the moulding core and a pair of sheets with their lugs prior to application against the chamfered edges of the moulding core;
  • Figure 2 is a similar view showing another pair of sheets with their lugs extended, on the point of being applied and glued to the lugs of the first two sheets;
  • Figure 3 is a view similar to the previous two, showing the lugs which form each chamfered edge glued together;
  • Figure 4 is a view similar to that of Figure 3, but in this example two of the sheets have their corresponding prolongations folded and glued to the adjacent sheets;
  • Figure 5 is a view very similar to that of Figure 4, but in this case it is the other two sheets which present the corresponding prolongations to their lugs;
  • Figure is a view similar to those of Figures 4 and 5, showing a version in which all the sheets present lugs with prolongations folded and glued to the adjacent sides;
  • Figure 7 is a perspective view showing one of the chamfered edges of the box obtained according to the
  • the method for manufacturing of boxes consists, according to the representation shown in the drawings, in applying successively two pairs of sheets -1- and -2- against the sides of a moulding core -3- provided with chamfered edges -4- situated between sides -5- of the moulding core.
  • the sheets -1- have some lugs -6- on both sides, while the sheets -2- have similar lugs -7-.
  • the lugs -6- and -7- have prolongations -6a- and -7a-, respectively.
  • the sides -9- will also be reinforced by said prolongations glued beside the chamfered edges -8-.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Cartons (AREA)

Abstract

The method consists in applying lugs (6,7) extending from the sides of sheets (1,2) onto chamfered edges (4) of a moulding core (3), along which the different steps of the method are carried out. Optionally, the lugs present corresponding prolongations (6a,7a). The lugs, previously glued, are joined together in order to form chamfered edges (8) limited by cant edges (8a) between every two adjacent sides (9) of the box. Optionally, beside the chamfered edges (8) the lugs (6a/7a) are glued to the sides (9) of the box.
This chamfered edges and the corresponding cant edges lend the box a great stiffness and resistance to withstand the compression stresses to which it may be subjected.

Description

  • The present invention refers to a method for manufacturing cardboard boxes, and to a box obtained with this method.
    • BACKGROUND OF THE INVENTION
  • A method for manufacturing cardboard boxes, which is described in Spanish Patent application no. 9306188 (PAPER, S.A.), starts from separate sheets, with lugs on the sides and flaps at the ends facing each other two by two. These sheets are applied onto the external faces of a mandrel, along which the various steps of the method are carried out to provide a rectangular prismatic body whose bases are provided with open flaps and whose edges are reinforced by folded lugs glued to the sides of the body, beside the edges.
  • In addition to achieving reinforced boxes capable of withstanding the stresses to which they will be subjected during utilization, the method object of the aforesaid patent provides other advantages which are, in summary: the possibility of some sides of the box being of different quality and thickness than the others, or presenting fibres running in different directions in order to withstand stresses in any direction.
  • Despite these advantages, various tests carried out with this type of box have shown that it is possible to increase their strength and thus extend their field of utilization.
    • DESCRIPTION OF THE INVENTION
  • Thus, in order to increase the strength of the boxes manufactured using the method described, the new method constituting the object of the present invention has been developed.
  • The method of the invention is characterized in that the lugs which project from the sides of the sheets are applied and joined together over chamfered edges provided on the mandrel. These chamfered edges are situated between two adjacent sides of the mandrel.
  • At least one of the pairs of sheets from which the box is obtained presents prolongations from the respective lugs. These prolongations are applied and joined to an adjacent zone of the sheet, immediately beside the chamfered edges upon which the lugs in question are applied.
  • In one possible embodiment, all the sheets from which the box is obtained present prolongations from their respective lugs. These prolongations are applied and joined to a zone of the sheet immediately adjacent to the chamfered edges upon which the lugs in question are applied.
  • The box obtained with the method described is provided with chamfered edges which alternate with its sides and on which are superimposed and glued the folded lugs of the adjacent sheets, forming two cant edges between each pair of sheets.
  • At least one of the superimposed lugs forming the chamfered edges of the box presents a prolongation folded and glued onto the adjacent side, beside the chamfered edges.
  • It is further envisaged that each of the superimposed lugs which form the chamfered edges of the box present corresponding prolongations folded and glued onto the adjacent side, beside the chamfered edges.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • For a better understanding of all that has been set forth in this specification, there are attached some drawings in which, solely by way of example, a practical case of embodiment of the method and the corresponding box is shown.
  • In said drawings Figure 1 is a schematic cross-section showing the moulding core and a pair of sheets with their lugs prior to application against the chamfered edges of the moulding core; Figure 2 is a similar view showing another pair of sheets with their lugs extended, on the point of being applied and glued to the lugs of the first two sheets; Figure 3 is a view similar to the previous two, showing the lugs which form each chamfered edge glued together; Figure 4 is a view similar to that of Figure 3, but in this example two of the sheets have their corresponding prolongations folded and glued to the adjacent sheets; Figure 5 is a view very similar to that of Figure 4, but in this case it is the other two sheets which present the corresponding prolongations to their lugs; Figure is a view similar to those of Figures 4 and 5, showing a version in which all the sheets present lugs with prolongations folded and glued to the adjacent sides; Figure 7 is a perspective view showing one of the chamfered edges of the box obtained according to the method of the invention.
    • DESCRIPTION OF A PREFERRED EMBODIMENT
  • The method for manufacturing of boxes consists, according to the representation shown in the drawings, in applying successively two pairs of sheets -1- and -2- against the sides of a moulding core -3- provided with chamfered edges -4- situated between sides -5- of the moulding core. The sheets -1- have some lugs -6- on both sides, while the sheets -2- have similar lugs -7-. Optionally, the lugs -6- and -7- have prolongations -6a- and -7a-, respectively.
  • It is envisaged that at least the lugs -6, 7- and, optionally, their prolongations -6a, 7a-, together with the zones of the sheets -1, 2- immediately adjacent to the respective lugs, be glued. Then the application of these lugs and, optionally, their prolongations, against the chamfered edges -4- of the moulding core -1- and against the sides -5- of same is carried out, using countermoulds, rollers or any other similar mechanism (not shown). Finally the body obtained is removed from the moulding core -1-, and constitutes the box, whose particular feature consists in it being provided with reinforced chamfered edges -8-, formed by the lugs -6, 7- glued together, which alternate with sides -9- (Figure 7).
  • If the lugs -6, 7- have prolongations -6a, 7a-, the sides -9- will also be reinforced by said prolongations glued beside the chamfered edges -8-.
  • In any case, between the chamfered edges -8- of the box are formed pairs of cant edges -8a- which lend the box a great stiffness, so that it withstands the compression stresses to which it will be subjected during utilization.

Claims (6)

  1. A method for manufacturing cardboard boxes, which consists in starting from separate sheets (1, 2) with lugs (6, 7) on the sides and flaps at the ends, facing each other two by two; these sheets are applied onto the external faces of a long mandrel (3) having a cross-section equivalent to that of the boxes to be obtained and along which the various steps of the method are carried out to provide a prismatic body whose bases are provided with open flaps and whose edges are reinforced by folded lugs glued to the cant edges of the sides of the body, characterized in that the lugs (6, 7) which project from the sides of the sheets (1, 2) are applied and joined together over chamfered edges (4) provided on the mandrel (3); these chamfered edges are situated between two adjacent sides (5) of the mandrel (3).
  2. A method as claimed in claim 1, characterized in that at least one of the pairs of sheets (1, 2) from which the box is obtained presents prolongations (6a) from the respective lugs (6), said prolongations being applied and joined to a zone of the adjacent sheet, immediately beside the chamfered edges (4) upon which the lugs in question are applied.
  3. A method as claimed in claim 1, characterized in that all the sheets (1, 2) from which the box is obtained present prolongations (6a, 7a) from their respective lugs (6, 7), said prolongations being applied and joined to a zone of the adjacent sheet, immediately beside the chamfered edges (4) upon which the lugs in question are applied.
  4. A box obtained with the method of claim 1, characterized in that it is provided with chamfered edges (8) which alternate with the sides (9) of the box, on which are superimposed and glued the folded lugs (6, 7) of the adjacent sheets, forming two cant edges (8a) between each pair of sheets.
  5. A box obtained with the method of claims 1, 2 and 4, characterized in that at least one of the superimposed lugs (6) forming the chamfered edges (8) of the box presents a prolongation (6a) folded and glued onto the adjacent side, beside the chamfered edges (8).
  6. A box obtained with the method of claims 1, 3 and 4, characterized in that all the superimposed lugs (6, 7) which form the chamfered edges (8) of the box present corresponding prolongations (6a, 7a) folded and glued onto the adjacent side, beside the chamfered edges.
EP94500166A 1993-10-26 1994-10-26 Method for manufacturing cardboard boxes, and box obtained with this method Expired - Lifetime EP0649735B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES09302232A ES2106654B1 (en) 1993-02-03 1993-10-26 IMPROVEMENTS IN MAIN PATENT N-9300188/6, FOR "PROCEDURE FOR THE MANUFACTURE OF CARDBOARD BOXES AND BOX OBTAINED WITH SUCH PROCEDURE."
ES9302232 1993-10-26

Publications (2)

Publication Number Publication Date
EP0649735A1 true EP0649735A1 (en) 1995-04-26
EP0649735B1 EP0649735B1 (en) 1997-05-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94500166A Expired - Lifetime EP0649735B1 (en) 1993-10-26 1994-10-26 Method for manufacturing cardboard boxes, and box obtained with this method

Country Status (3)

Country Link
EP (1) EP0649735B1 (en)
AT (1) ATE153276T1 (en)
DE (1) DE69403301D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752190A1 (en) * 1996-08-09 1998-02-13 Otor Sa Box making machine from corrugated cardboard sheets
CN105416756A (en) * 2015-11-17 2016-03-23 江苏永信光学仪器有限公司 Carton foot plate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160929A2 (en) * 1984-05-08 1985-11-13 Herzberger Papierfabrik Ludwig Osthushenrich GmbH & Co KG Method and device for manufacturing a cardboard box having wooden supports in the four corners
EP0387171A1 (en) * 1989-03-10 1990-09-12 Jean-Marie Eberle Method for producing a tubular packing body, packing made by this method and device for this method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0160929A2 (en) * 1984-05-08 1985-11-13 Herzberger Papierfabrik Ludwig Osthushenrich GmbH & Co KG Method and device for manufacturing a cardboard box having wooden supports in the four corners
EP0387171A1 (en) * 1989-03-10 1990-09-12 Jean-Marie Eberle Method for producing a tubular packing body, packing made by this method and device for this method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2752190A1 (en) * 1996-08-09 1998-02-13 Otor Sa Box making machine from corrugated cardboard sheets
CN105416756A (en) * 2015-11-17 2016-03-23 江苏永信光学仪器有限公司 Carton foot plate

Also Published As

Publication number Publication date
EP0649735B1 (en) 1997-05-21
DE69403301D1 (en) 1997-06-26
ATE153276T1 (en) 1997-06-15

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