FR2625181A1 - PACKAGING FOR RETRACTABLE PLASTIC FILM PACKAGING OF AT LEAST ONE OBJECT - Google Patents

Abstract

The invention relates to a packaging for the packaging of at least one object, of the type comprising a packaging body made of a semi-rigid material such as cardboard or corrugated cardboard, and a film of a shrinkable plastic material, 14 , which is integral with said body and is intended, after retraction, to hold said object therein in position. In this packaging, the film 14 of retractable plastic material extends over the bottom parallel to two walls 4 or to the flaps 6 lining them, said film being laminated against the internal face of the bottom and locked in the stuck position by pinching between the bottom and the shutters doubling it.

Description

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  PACKAGING FOR PLASTIC FILM PACKAGING

RETRACTABLE OF AT LEAST ONE OBJECT.

  The invention relates to a packaging for the condition-

  retractable plastic film of at least one object, of the type comprising a packaging body in one

  semi-rigid material such as cardboard or corrugated

  1 and a film of a shrinkable plastic material, which is integral with said packaging body and holds therein or

  the objects by enclosing them, after retraction of said film.

  Such packaging is of great interest

  to users because they allow the grouping

  within the same packaging body of objects or batches of objects of different volumes, lower than the internal volume of the packaging body, which are held firmly

  in position against the inner face of the bottom thereof.

  Many variants of such packages have been proposed.

lages.

  It has been suggested that two sheets of

  retractable plastic against two side walls op-

  of the packaging body, inside or outside the

  and fold these sheets against the packaged objects, to join them together during the retraction operation. These packages are

  however, of impractical use because of the

  two sheets of plastic material, which compli-

  the operations of setting the volume of the packing

  generally delivered flat to users, and

packaging operations.

  To remedy this drawback, the Applicant has proposed, in French Patent No. 2,506,722, to glue a single plastic sheet against the inner faces of the bottom and two opposite side walls of the

packing body.

  This sheet of plastic material, however, risks

  take off from the body of the packaging during

  handling conditions and shocks, when full packaging is moved, particularly if the

  conditioned objects are heavy. Also the Applicant

  she proposed, in its French patent N 2,567,101, to subject the plastic sheet to the packaging body, when it is constituted by a so-called American box, by pinching this plastic sheet between the internal flaps and the external flaps which constitute the bottom, these shutters also called "flaps" being adjacent,

  respectively, with two sets of parallel sidewalls

  the. In the same patent, the Applicant also proposes an original method of placing the plastic sheet between the bottom flaps, but this method is relatively expensive for the user, since the plastic film can not be rendered. solidary of the packing body that during the implementation

volume of the American fund.

  The present invention aims to remedy this inconvenience.

  deny by proposing a package of the type defined above, other than an American box, in which a single film

  retractable plastic material is pinched between

  from the bottom of the packaging body to the assembled state,

  thus, after retraction, an excellent posture

  packaged objects, while enabling them to deliver

  flat packaging to the user, with the material film

  re plastic glued against the packaging body, thus avoiding the use of expensive equipment for its implementation,

  when this packing body is put in volume.

  For this purpose, the invention relates to a packaging

  for packaging at least one object, of the type com

  taking a packing body of a semi-rigid material such as cardboard or corrugated cardboard, and a film of a shrinkable plastic material, which is integral with said body and is intended, after retraction, to hold said object in position , said packaging body comprising a rectangular or square outer bottom, consisting of a single panel adjoining two parallel walls -3-, lined internally by two flaps adjacent to the two other parallel walls or flaps internally doubling these other walls, this packaging being characterized in that the shrinkable plastic film extends on said bottom parallel to said other walls or shutters doubling them, said film being laminated against the inner face of the bottom and locked in the position glued by pinching between

  said bottom and flaps doubling this bottom.

  In such a package, the shrink film is thus held in position, on the one hand, by gluing against the

  bottom, on the other hand, by the inner doubling

  this background and on which the objects

  tioned. This gives a lock in position of this film and the objects it encloses, which allows it to

  do not move in case of shocks or violent movements

  of the package being handled, even if the packed object (s) have a large mass and / or a volume well below the internal volume of the packaging.

packaging.

  It will also be possible to deliver the unmounted packages to users, in the form of a single flat blank of semi-rigid material precut and repressed, with the shrink film glued against the bottom, the users can then volume themselves these packages, by conventional methods and equipment, without resorting to special and expensive devices for laying the plastic film. Such a blank of said carton constitutes

also an object of the invention.

  As will be seen below, in the description

  certain forms of implementation of the

  vention, the packaging body can be of a type known per se, which will further facilitate its setting in volume for

the users.

  Advantageously, on the packaging body delivered flat to users, the plastic film -4- retractable may be rendered temporarily secured by glue points, adjoining walls at the bottom or flaps extending these walls, to facilitate the volume of the packaging body and its filling. The film is then simply detached from these walls or these shutters to be folded at both ends on the packaged objects, before proceeding to the retraction phase.

  As will be seen in the detailed description which

  will follow various forms of implementation of the invention, the shrinkable plastic film may protrude laterally or not on the walls which are

  parallel or on the shutters that double these walls.

  The accompanying drawings show three embodiments of a package according to the invention. In these drawings: FIG. 1 is a perspective view of a first packaging according to the invention; FIG. 2 is a plan view of the pre-cut and repressed blank from which this package originates, with the retractable plastic film glued against the bottom;

  Figures 3 and 4 are similar views, respectively

  FIGS. 1 and 2 show a second package according to the invention; Figures 5 and 6 are views similar to Figures 1 and 2 of a third packaging according to the invention. FIG. 7 is a view of a blank for the embodiment

  a fourth packaging according to the invention.

  The packaging shown in FIGS. 1 and 2 comprises a packing body of known type, of parallelepipedal general shape, comprising a bottom 1, to which are attached by folding lines or discharges of

longitudinal walls 2 and 3.

  The transverse walls 4 are adjacent to the ends

  2. At their base, a flap, adjacent to these walls by a fold line, -5- double the bottom in the mounted position. At their upper part, a flap 6, articulated by fold lines, is folded inside the packaging in position

  mounted to double inside the associated wall 4.

  A tongue 7 of these flaps 6 is engaged in a

  cutout 8 of the corresponding flap 5 during assembly.

  The longitudinal wall 3 is laterally extended by flaps 9, which, in the mounted position, are engaged between

the walls 4 and the flaps 6.

  A cover 10 is articulated by a fold line to the upper part of the longitudinal wall 2 and is extended by a panel 11, which, in the closed position, is pressed against the outer face of the wall 3. This panel 11 is extended laterally by flaps 12 having a curved edge 13, which allows them to be engaged

  between the flaps 9 and the wall 4 during the iron phase.

  meture. According to the invention, a film-material

  retractable 14, which in the present case is of a

  less than the length of walls 2 and 3, is

  trecollé against the bottom 1 by glue lines 15, and extends parallel to the transverse walls 4, without overflowing on the flaps 6 internally doubling these walls. It is thus possible to deliver to the user the blank shown in FIG. 2 with the pre-glued film

  the substance, so that the user can proceed himself

  even at the volume setting of the packaging, in the usual manner for the packaging body, which is of a well-known type, without resorting to processes or

complex machines.

  To facilitate the setting up of the packaging body

  and the conditioning of the objects, the film 14 will be able to

  tageusement be secured temporarily on the blank of cardboard starting walls 2 and 3 and possibly the lid 10, using simple points of glue 16. After mounting the package and implementation -6 - objects to be conditioned, it will suffice to detach the film 14 of the walls 2 and 3 and the cover 10 to fold its ends on the objects and proceed to its retraction

before closing the package.

  Figures 3 and 4 show another form of

  implementation of the invention, different from the preceding

  but with exactly the same advantages.

  This package also comprises a packing body of a known type of parallelepipedal overall shape, which comprises a bottom 21 adjoining two longitudinal walls 22 and 23. At the wall 22 are laterally adjacent two

  shutters 24, intended to form the transverse walls.

  These are lined internally by two flaps 25 laterally extending the longitudinal wall 23. At the base of these flaps 25 is connected by a fold line a panel 26, less than or equal to half the size

  of the length of the bottom 21, which comes to double inside-

this one in the mounted position.

  At the top of each of the walls 22 is

  articulated by a fold line a panel 27, of

  equal to or greater than half that of the bottom 1 and intended to form a closure element of the body

  packaging at the top of it.

  The outer walls 24, on the one hand, and the flaps 25 which internally double them, on the other hand, are joined by bellows 28 to the panels 27. In the closed position of the body, the bellows 28 are folded flat against the internal face of the flaps 25, which they maintain and applied against the walls 24. The walls 24 and the flaps 25 may further be secured by

gluing or stapling.

  According to the invention, a plastic film 29 is laminated against the bottom 21 by adhesive lines 30 and extends parallel to the flaps 25 internally doubling the transverse walls 24 without overflowing on these flaps. It is thus possible to deliver to the users the blank cut out, as shown in FIG. 4, with the film 29, and the packing body can be mounted in the usual manner, without costly special devices, pinching the portion of the film stuck on the bottom between it and the flaps 26, with great security of fixing the film. It will be noted that the shutters 26 comprise a cutout 31 in an angle in order to be able to access the film 29, after

  mounting, and clear it if necessary.

  As in the packaging previously described,

  glue points 32 make it possible to temporarily

  on the starting blank, the film 29 and the panels 27 and / or the walls 22, 23, to facilitate the assembly of

  packaging and placing of objects to be packaged.

  As before, the ends of the film 29 are then detached from the panels 27 and walls 22 and 23, folded over the objects, and subjected to a retraction phase. The panels 27 can then be folded down to close the package, and joined by a gummed strip or

  by gluing in case of covering the panels.

  We will now describe the packaging of Figures 5 and 6, wherein the shrinkable plastic film is always clamped between the bottom and flaps doubling the bottom inside, but differs from previous in that said film overflows laterally from the bottom on the

parallel walls.

  As in the previous embodiments, the body of this package comprises a rectangular outer bottom 41,

  connected to two parallel longitudinal walls 42 and 43.

  At the upper part of the wall 42 is articulated a cover 44, foldable parallel to the bottom- to seal the package, a tongue 45, provided at the upper part of the wall 43 to engage in

  this position in a cutout 46 of the cover.

  At both ends of the wall 43 are hinged flaps 47, able to be arranged perpendicularly to this wall, to be clamped between panels 48, adjacent to the ends of the wall 42 and forming the -8 transverse outer wall of the package, and flaps49, adjoining the upper part of these walls

  transverse 48 and folded towards the bottom.

  At the base of the flaps 48 are hinged flaps 50, which double the bottom 41 inside the packaging body, with a partial overlap of the flaps. Cutouts 51, formed in these flaps and possibly in the bottom, make it possible to lock the flaps 49 in position

  by engaging a leg 52 of these flaps.

  Tongues 54, cut in a portion of the bottom and adjacent to the flaps 50, are retracted by folding below and clamped together and the bottom in the mounted position of the package. The role of these tongues

  retractable will be explained below.

  A film 55 of shrinkable plastic material is

  glued against the bottom 41 by adhesive lines 56. On the starting blank (FIG. 6), as in the packagings

  previously described, the film 55 is temporarily

  cover and walls 42 and 43 by

  The film extends parallel to the transverse walls.

  versales 48, but has a width greater than the length of the longitudinal walls 42 and 43, so that it overflows

  laterally, on the starting blank, on the trans-

  48. In the mounted package, this film is also clamped not only between the bottom 41 and the flaps 50, but also between the walls 48 and the flaps 47. As seen in Figure 5, along the walls 42 and 43 and the cover 44, the protruding portions of the film are however folded at 58 on these elements of the packaging body. Cutouts are provided for this purpose in the flaps 50 doubling the bottom, in order to access the film in the corners, to clear it. The retractable tabs 54 are intended to facilitate the mounting of the package and the placement of the film 55, on which

they slide down to the bottom.

  Such packaging is intended for the packaging of objects whose volume is close to the internal volume of the packaging. It is indeed possible to fold the folded portions 58 of the plastic film on the lateral faces of such an object, close to the flaps 49, so that

  after the retraction phase, the object is thus -

  maintained perfectly along all its lateral faces.

  This packaging is, however, of a relative

  complex, also the Applicant has developed a fourth form of implementation of the invention

which is illustrated in Figure 7.

  This embodiment is relatively close to that of FIG. 2 and, for the sake of clarity, the members already described with reference to this FIG.

  by the same reference numbers assigned index '.

  However, we notice the following differences

relation to Figure 2: -

  - The shrinkable plastic film 14 'has a width greater than the length of the longitudinal walls 2' and 3 'and therefore protrudes laterally on the side walls; - On the bottom 1 ', the film 14', however, has a lateral recess 19 'avoiding that it overflows out of the bottom and also allowing easy implementation of flaps 5 doubling the bottom; - Furthermore, the flaps 6 ', corresponding to the flaps 49 of the embodiment of Figure 6, have the same shape as these, that is to say that their edges, which are in the vertical position in the mounted position, are indented at 18 ', in order to easily access the

  film 14 ', to clear it in the corners.

  This embodiment of the invention, film laterally projecting, therefore lends itself to a mounting too

  easy as the embodiment of Figures 1 and 2.

  The invention thus provides users with easy-to-assemble packagings with usual means, which can be delivered to them with the shrink-wrapped plastic film integral with the blank from which the packaging body will be issued, and which presents a high degree of safety of Holding the shrinkable film in position and,

  therefore, conditioned objects.

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Claims (4)

  Packaging for packaging at least one object, of the type comprising a packaging body made of a semi-rigid material such as cardboard or corrugated cardboard, and a film of a shrinkable plastic material (14, 29 55), which is integral with said body and is intended, after retraction, to hold said object in position,   said packaging body comprising a rectangular outer bottom   gular or square, consisting of a single panel (1; 21; 41) adjoining two parallel walls (2,3; 22,23; 42,43), - lined internally by two flaps (5,26; 50) adjacent to the two other parallel walls (4,48) or flaps (25) internally doubling these other walls (24), this package being characterized in that the film (14,29,55) of shrinkable plastic material extends over said bottom (1,21,41) parallel to said other walls (4,48) or flaps (26) doubling them, said film being laminated against the inner face of the bottom and locked in the position glued by pinching   between said bottom and the flaps doubling this bottom.   2- Packaging according to claim 1, characterized in   it comes from a single blank in a semi-   rigid such as cardboard or corrugated cardboard, precut and repressed, which is secured to a shrinkable plastic film (14,29) which is laminated against   the part corresponding to the internal face of the bottom.   3- Packaging according to claim 2, characterized in   what on said blank, said film (14,29) is made   temporarily by glue dots (15,32) or the like (2,3,22,23) adjacent to the bottom and / or closure portions of the package (10,11; 27) adjoining these walls.   4- Package according to one of claims 1 to 3,   characterized in that said film (55) has a width greater than the distance separating the walls (48) parallel to which it extends, so as to cover a part of these side walls and to be gripped between them and flaps or flaps (49) internally doubling these walls,   - Package according to one of claims 1 to 4,   characterized in that cutouts (3i, 59) are provided in the flaps (26, 50) doubling the bottom, to allow the release of the shrinkable plastic film (29, 55) clamped between these parts of the body. packaging.