JP2010126258A - Container for preventing leakage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carton effective in preventing leakage. <P>SOLUTION: The carton formed from a blank 1 of a foldable material like corrugated cardboard is equipped with a base 2, side walls 3 and 4 and end walls 5 and 6 connected to the base along a crease, and leakage prevention gusset means 7 to 10 for connecting the side wall and the end wall along the crease, and this is the carton in which each end wall or side wall has the first flaps 19 and 20 connected to the end wall or the side wall along at least one crease and the second flaps 23 to 26 connected to the first flap and the adjoining leakage prevention gusset means along the crease 28 of a shape for folding the first flap at the crease so as to easily fold the flap and the gusset means completely against the end wall or the side wall, when folding the gusset means toward the end wall or the side wall. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a leak-proof carton, box or container for use, for example, in packaging and transporting products that require cooling by ice particles held in the carton.

  Leakage prevention cartons are widely used for packaging fresh products such as vegetables such as broccoli and fresh products such as meat and fish.

  Amcor's Australian Patent Application Publication No. 2006201777 shows an example of a recently developed leak-proof carton. The disclosure of that document is incorporated herein by cross-reference.

  Other examples of leak-proof cartons include Visy R & D Pty Ltd. Are Australian Design Registration Nos. 319674 and 319675.

  One problem associated with leak-proof cartons is that they can occur when assembling a leak-proof carton from a blank. Blanks may be assembled manually or machinely, but assembly problems can arise because the blanks need to be folded to double or triple the thickness of the sidewalls.

  It is an object of the present invention to provide an improved leak-proof carton that is easier to assemble.

  In accordance with the present invention, a carton formed from a blank of foldable material, such as cardboard, comprising a base, side walls and end walls connected to the base along the folds, and side walls and ends along the folds. Leak-proof gusset means for connecting the walls, each end wall or side wall being joined to the end wall or side wall along at least one fold, and the gusset means towards the end wall or side wall When folded, the flap and gusset means are joined to the first flap and the adjacent leak-proof gusset means along a crease shaped to fold the first flap with a fold so that the flap and gusset means are fully foldable against the end wall or side wall. A carton having a second flap is provided.

  In one form, the second flap is joined to the end wall of the carton.

  In a preferred form, the second flap has a pair of adjacent folds that diverge from the outer edge of the second flap in a direction toward the adjacent angle of the gusset means adjacent the fold of the second flap relative to the first flap. Have.

  The first flap is joined to the end wall along adjacent parallel folds to allow for the thickness of the foldable material.

  In one form, the pair of bifurcated folds is formed by the first flap being pulled in the direction of the end wall around the fold relative to the second flap when the gusset means is folded toward the end wall. After preparing the first flap and gusset to fold against the wall, it is secured in place. The pair of branch folds are preferably defined by intermittent perforations so that they can be easily folded along the folds.

  In one embodiment, the first flap is formed with a locking tab adjacent to the outer edge of the second flap that engages between the foldable side wall extension flaps secured to the side wall. The first flap can be folded at a fold so that the thickness is doubled or tripled. In one particular configuration, the outermost sidewall flap extension includes an opening that is engaged by a molded portion of the lock tab to hold the lock tab in place between the sidewall and the sidewall flap extension.

  In a preferred embodiment, the end wall of the carton has flaps that are folded at folds, each flap being formed with a central handle hole having a foldable tab, and when the foldable tab is folded, A handle located in the center is defined, and the carton can be easily lifted using the handle.

  The blank forming the carton and / or the blank forming the lid may be made from a suitable waterproof material such as polyethylene / laminate paper and / or PET / polyethylene adhesive laminate. Such materials are known in the art and will not be described in further detail below.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

It is a top view of the blank which forms the carton which embodies this invention. It is a top view of the blank which forms the lid | cover of a carton. Figure 3 shows a carton partially assembled from blank 1 showing how to fold the end panel flaps to complete the carton. Shows the next step in completing the carton. A fully assembled carton is shown. FIG. 4 is a detailed view of the method in which the end of the carton is held in the closed position. The assembly of the finished lid on the finished carton is shown. Shown is an assembled carton and lid with lift handles in place.

  Referring initially to FIG. 1, a blank 1 comprises a base 2 as shown, side walls 3 and 4 and end walls 5 and 6 joined to the base 2 along a fold as shown, as shown. And leak-proof gussets 7, 8, 9, and 10, each connecting a side wall and an end wall along the fold line, each including a central diagonal fold line 11.

  Each side wall 3 and 4 has a first flap 12 and 13 respectively connected to the side wall along a parallel fold line 14 and a second flap connected to the first flaps 12 and 13 along a fold line 17 respectively. 15 and 16. The second flaps 15 and 16 are formed with an opening 18, which will be described below.

  Each of the end walls 5 and 6 has a first flap 19 and 20, which has an outer edge formed with a central handle hole 21 and is endwalled by parallel folds 22. 5 and 6 are connected. The central handle 21 has a foldable handle 36 defined by parallel folds as shown to provide a lifting handle 36 in the carton, as shown in FIG.

  The second shaping flaps 23, 24, 25 and 26 extend from the side edges of the first flaps 19 and 20 along parallel fold lines 27, respectively, and gusset means 7-10 along the slit line 28. The slit line 28 branches from the outer edge portion of the second flaps 23 to 26 toward the cutout 29 aligned with the parallel crease 22 at one end portion.

  Each side edge of the first panels 19 and 20 is formed with a locking tab 30 connected to the first panel by a fold line 31. The purpose of the molded locking tab 30 is to engage the opening 18 as described further below.

  In the following, referring to FIGS. 3-6, the blank 1 described above folds the flaps 15 and 16 onto the flaps 12 and 13 so that the gussets 7 to 10 can be folded outside the partially assembled carton. The side walls 3 and 4 and the end walls 5 and 6 are assembled to the base 2 by folding. Next, the gussets 7 to 10 are folded toward the end walls 5 and 6, and the first flaps 19 and 20 are connected to the outer fold line 22 by joining the gusset and the second flaps 23 to 26. Start folding around. This movement is aided by the bifurcated slit line 28 as understood by those skilled in the art.

  If the first flaps 19 and 20 are continuously folded toward the end walls 5 and 6, the gusset means 23 to 25 become flat with respect to the end walls 5 and 6 as shown in FIG. 4. Next, the locking tab 30 is folded inward as shown in FIG. 4 and the molded end of the locking tab 30 engages the opening 18 as shown in FIG. 5 and more clearly shown in FIG. Until the side wall 3 and 4 and the pair of flaps 12 and 15, 13 and 16 covering the side wall 3 and 4 are inserted. This puts the carton 31 upright and ready to accept the required product.

  Referring to FIG. 2, lid blank 40 includes an upper panel 41, side panels 42 and 43, and end panels 44 and 45, all defined by folds as shown. End panels 44 and 45, including end flaps 46, are folded into side panels 42 and 43 and glued in place.

  Referring to FIGS. 7 and 8, when the carton 31 described above is closed by the lid 52, the handle 36 remains exposed to provide a means by which the carton with lid can be lifted comfortably.

  From the specification and claims, unless otherwise specified in context, the term “comprise” and variations of terms such as “comprises” and “comprising” are the integers mentioned. Or it should be understood that it includes the inclusion of a step or integer group or step group, but does not exclude any other integer or step or integer group or step group.

  Any prior document (or information obtained from the same document) or any known method in this specification may be referred to by any prior document (or information obtained from the same document) or any known method. It is not, and should not be received, as a recognition, acceptance, or any form of proposal that forms part of the well-known general knowledge in the relevant field of the book.

DESCRIPTION OF SYMBOLS 1 ... Blank, 2 ... Base part, 3, 4 ... Side wall, 5, 6 ... End wall, 7-10 ... Leak prevention gusset means, 11, 14, 17, 22, 27, 28, 31 ... Fold, 12, 13, 15, 16, 19, 20, 23-26, 46 ... flap, 18 ... opening, 21 ... handle hole, 29 ... cutout, 30 ... lock tab, 36 ... lifting handle, 40 ... lid blank, 41 ... top panel, 42 , 43 ... side panels, 44, 45 ... end panels, 52 ... lids.

Claims (13)

A carton formed from a blank of foldable material such as cardboard,
The base,
Side and end walls connected to the base along the crease;
Leakage preventing gusset means for connecting the side wall and the end wall along the fold line,
Each of the end walls or the side walls is
A first flap joined to the end wall or the side wall along at least one fold;
Folding the leak-proof gusset means toward the end wall or side wall, the first at the fold to assist in fully folding the flap and the leak-proof gusset means relative to the end wall or the side wall. A carton having a first flap and a second flap joined to the adjacent leak-proof gusset means along a fold that folds the other flap.   A pair of adjoining branches of the second flap from an outer edge of the second flap in a direction toward an adjacent angle of the leak-proof gusset means adjacent to a fold of the second flap with respect to the first flap The carton of claim 1 having a crease or slit line to make.   The carton of claim 2, wherein the first flap is joined to the end wall along adjacent parallel folds, taking into account the thickness of the foldable material.   When the branch fold or pair of slit lines folds the leak-proof gusset means toward the end wall, the first flap is pulled in the direction of the end wall around the fold with respect to the second flap. The carton according to claim 2 or 3, wherein the carton is fixed in place after preparing the first flap and the gusset to fold against the adjacent end walls.   The carton according to claim 4, wherein the pair of branch folds is defined by intermittent perforations and has a shape as described with reference to Fig. 1 so that it can be easily folded along the folds.   The first flap is formed with a locking tab adjacent to the outer edge of the second flap, and the tab engages between foldable side wall extension flaps secured to the side wall to provide a side wall thickness of 2 The carton according to any one of claims 1 to 5, wherein the carton can be folded at a fold with respect to the first flap so as to be doubled or tripled.   7. The outermost sidewall flap extension has an opening engaged by a molded portion of the locking tab to hold the locking tab in place between the sidewall and the sidewall flap extension. carton.   The end walls have flaps that are folded at folds, each flap being formed with a central handle hole having a foldable tab, the foldable tab being located in the center of the handle hole when folded. The carton according to any one of claims 1 to 6, wherein a handle is defined so that the carton can be easily lifted using the handle.   The carton of claim 8, wherein the foldable tab is folded into a lower edge of the end wall.   10. A carton according to any one of the preceding claims, wherein the carton is formed from a blank substantially as described with reference to Figure 1 of the accompanying drawings.   Carton substantially as described with reference to Figures 1 and 3-6 of the accompanying drawings.   12. A carton according to any one of the preceding claims, further comprising a lid formed from a blank substantially as described with reference to Figure 2 of the accompanying drawings.   A carton and lid substantially as described with reference to Figures 7 and 8 of the accompanying drawings.

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