FR2782030A1 - Method for forming edges of cardboard containers, involves inserting template with stops positioned adjacent fold lines - Google Patents

Abstract

The method for forming the edges of cardboard containers (1) involves placing a template (3) into the container adjacent to a panel (12) to form one or more stops (21) which engage a fold line (13) of the edge flange (2) to be formed.

Description

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  The subject of the present invention is a method for shaping borders in boxes

  rectangular boxes of cardboard or other semi-rigid material.

  Cardboard boxes which have edges are generally in the form of a box provided with an opening upwards, and the sides of which each extend by a precut panel comprising fold lines along which the panel is folded towards the inside to form an internal shape border

rectangular parallelepiped.

  These internal edges are mainly intended to stiffen the boxes and give them a

certain aesthetic aspect.

  However, the folding of semi-rigid materials such as cardboard comes up against the difficulty of folding thin materials along two parallel and closely spaced lines. Thus the edges currently formed have sufficiently large dimensions to allow the implementation of folding techniques known to date. The object of the present invention is to remedy this drawback by proposing a method which allows the shaping of borders of low height and / or of low height.

  width in cardboard boxes or other semi-material

  rigid from a panel which extends above the upper edge of one side of said box and which comprises

  several parallel and close fold lines.

  The method according to the invention consists in introducing into the useful space of the box, near said panel, at least one template having one or more edges, depending on the number of folds to be made, each intended to come into contact with a fold line

of the border to be produced.

  According to one embodiment of the invention, the template function is ensured by a piece of rectangular parallelepiped shape which is introduced into the

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  box by an opening previously made in the bottom of said box or in one of its sides, and which is then

  removed, once the border has been made.

  According to another embodiment of the invention, the template consists of a plate or a blade which is introduced through an opening made in the bottom of the box or in one of its sides, and which is arranged perpendicularly on the side o must be formed the border, each plate or blade being intended to come into contact with a fold line, by one of its edges parallel to said line and which can be moved successively from one line to another to perform several folds

  successive in parallel lines.

  It will be noted in this regard that two plates or two blades introduced simultaneously or successively lead

to the same result.

  According to an additional feature of the invention, the opening in the bottom or in one side of the box is closed by one or more tabs precut in the bottom of said box or in one of its sides to allow the introduction of the template. Due to the elasticity of the tabs, the opening can be closed after removing the template,

  so as to remove the temporary deformation.

  According to a particular embodiment of the invention, the template function is ensured by a flap of appropriate dimensions produced in one of the walls of

the box.

  The advantages and features of the present invention will become more apparent from the

  description which follows and which relates to the appended drawing,

  it being understood that this description does not present any

  limiting character with respect to the invention.

  In the accompanying drawing: - Figure 1 shows a partial perspective view of a box opened from above before training

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  of one of its borders according to an embodiment of the

method according to the invention.

  - Figures 2a to 2d show the different phases of formation of an edge of the box of Figure 1. - Figure 3 shows a partial perspective view of an open box illustrating two modes of

  carrying out the method according to the invention.

  If we refer to Figure 1 we can see a cardboard box 1 of rectangular parallelepiped shape opening from above and having four sides 10 defining a tray 11 and each extending by a panel 12 having fold lines 13 parallel and

  close together intended for the formation of a border 2.

  In this box 1 three borders 2 are already formed, while the fourth border 2, shown in

  broken lines, remains to be formed.

  We can also see that a cutout 14 is made in the bottom 15 of the box 1, near the side 10 o must be formed the fourth border. The cutout 14 is H-shaped so as to create two tongues 16 and 16 'closing an opening 17 for the passage of a template 3, visible in FIG. 2a, intended for the formation of the border. The two tongues 16 and 16 'have a certain elasticity due to the material and return to their initial position when the template 3 is removed, which makes it possible to close the opening 17 and improve the aesthetics

of box 1 after its formation.

  The template 3 has a rectangular parallelepiped shape and is introduced into the container 11 perpendicular to the bottom 15 and at the sides 10. The template 3 has a width 1 substantially equal to the upper face of the edge 2 to be produced and a length L of introduction in the container 11 substantially equal to the height of the border 2 to be produced, as can be seen in FIGS. 2a, 2b and 2c which show the folding of the

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  border 2 from the panel 12 around the template 3. The edges 21 formed by the upper edges of the template 3 are

  for this purpose parallel to the fold lines of the panel 12.

  If we now refer to FIG. 3 we can see that the template 3 can also be introduced through an opening 4 made in one side 10 of the box 1 and

closed with a tab.

  We can also see that the function exerted by the template 3 can also be achieved by a flap 5 precut in the bottom 15 of the box, near a side 10, and which is lifted in the vertical position before

  fold the border.

  The method according to the invention is particularly suitable for the production of borders having a height and / or a width of small dimensions and in particular for the production of two folds

consecutive to 90.

  It will be understood that without departing from the scope of the invention, it is possible to use several templates for the production of a border, along the length of the latter.

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Claims (5)

  1) Method for shaping a border (2) in a box (1) of cardboard or other semi-rigid material from a panel (12) which extends above the upper edge of one side (10) of said box (13) parallel and close together, characterized in that it consists in introducing into the useful space (11) of the box (1), near said panel (12), at least one template (3, 5) cut so as to present one or more edges (21) each intended to come into contact with a fold line (13) of the border (2) to be carried out.   2) Method according to claim 1 characterized in that the template is a piece (3) of rectangular parallelepiped shape which is introduced into the box through an opening (17) previously made in the bottom (15) of said box or in one of its sides (10), and which is then   removed, once the border (2) has been made.   3) Method according to claim 1 characterized in that the template consists of at least one plate or blade that is introduced, through an opening (17) formed in the bottom (15) of the box or in one on its sides (10), perpendicular to the side o must be formed the border and in that said plate or blade is intended to be in contact with a fold line (13), by one of its edges,   parallel to said line (13).   4) Method according to claim 3 characterized in that said plate or blade can be successively moved from one line (13) to another to perform several successive folds of the panel (12) along lines parallel.   ) Method according to any one of claims 2 to 4   characterized in that the opening (17) is closed by one or more tabs (16, 16 ') precut in the bottom   (15) of said box (1) or in one of its sides.   6) Method according to claim 1 characterized in that the template consists of one or more flaps (5) of appropriate dimensions made in the bottom (15) of the   box (1) or in one of its sides.