FR2662422A1 - METAL PACKAGING WITH SEALED PROFILE. - Google Patents

Abstract

The invention relates to metal packaging. A package (1; 16), for example a tin can, comprises a drum (2) and a profiled rim (4) arranged transversely to the longitudinal axis of the drum and which is sealed with a tight seal by a tear film (5 ). The rim (4) is surrounded by a fold (7) of the barrel which extends outwardly beyond the profiled rim (4) in the direction of the longitudinal axis. This construction has the effect, on the one hand, of protecting the film (5) and, on the other hand, of guaranteeing the possibility of stacking the packages (1; 16). This is how the double fold (3) formed at the bottom of the packaging (16) can be embedded in the fold (7) of the barrel and that a stack of the packages can be made into a stable stack. Main application: stackable tin cans.

Description

METAL PACKAGING WITH SEALED PROFILE.

  The present invention relates to a metal package comprising a barrel and a profiled rim disposed perpendicularly to the longitudinal axis of the barrel, which is sealed with a tear-off film. In a metal package of this kind which is already known from the German utility model DE-G-82 11 578 8 Ul, the profiled flange 1 is deformed from the inside to the outside and its outer diameter 2 can be compressed at a value no greater than that of the barrel 3 so that a lid can be pushed over the barrel The profiled flange 1 has in its upper region 4,

  transversely to the longitudinal axis of the metal packaging

  This flattened flat-shaped flattened circle surface serves as a sealing surface for a lid or film. This known metal package is especially designed for creams, greases and the like and is not suitable for use as a sealing surface. stackable in a way that provides protection

against lateral sliding.

  The object of the invention is to produce a packaging

  metal floor of the kind mentioned at the beginning, in a stackable form. This problem is solved by the fact that the profiled flange is surrounded by a bend of barrel that extends beyond the

  profile flange in the direction of the longitudinal axis.

  Thanks to this particular arrangement of the profiled rim, on the one hand, the sealed sheet on the profiled rim is protected and, on the other hand, the packaging

  metal are made stackable.

  An upper metal package can therefore be recessed by its lower edge in the upper region of the metal package below, so that the bend of the barrel surrounds the lower edge and prevents it from

to deport laterally.

  Compared with traditional metal packaging

  With a tear-off lid, the invention provides considerable cost savings by using the sealed foil on the profiled flange to serve as a closure. Another advantage is that the foil

  can be easily removed from the profiled rim.

  According to another characteristic of the invention, the sheet metal layers of the bend of the drum are arranged remotely

one from the other.

  This characteristic is recommended in the case of sheets which are sensitive to a bending too sharp edge and / or excessive drawing of these sheets, and also when one wants to obtain a particular geometry in the

fold region of the barrel.

  According to another characteristic, the sheet metal layers of the bend of the barrel are pressed against each other in the region of a crown of the bend of the bole. This characteristic allows advantageous radial stretching of the bend of the bole. According to another characteristic of the invention, the bend of the barrel extends radially outwards beyond the remainder of the barrel and the bend of the barrel surrounds an inner end of an upper metal package stacked on the metal package. features facilitate stacking. According to another characteristic of the invention, a

  outer surface of the bend of the drum is at least approximately

  in line with an outer surface of the drum.

  This feature facilitates the manufacture of the packaging

metal age.

  According to another characteristic of the invention, the profiled rim is formed of layers of sheets arranged one above the other. This characteristic makes it possible to obtain a particularly rigid profiled rim and

  having a high resistance to deformation.

  According to another characteristic of the invention, a

  free end of the profiled flange is arranged on the outside.

  These characteristics are advantageous when it is necessary to fear corrosion by placing the free ends of the profiled flange in contact with the filling product.

the metal packaging.

  According to another feature, the free end of the profiled flange is directed outwards and an outer edge of the film is disposed in the region of the free end of the profiled flange. This characteristic makes it possible to obtain a good rigidity of the profiled flange. and a sealing surface which is advantageously large for the film. The radial extension of the profiled flange can be

reduced to a minimum.

  According to other features, a free end of the profiled rim is disposed inside the inner space of the metal package; or the free end of the profiled flange is directed outwards; or the free end of the profiled flange is directed inwards and the profiled flange is formed of three thicknesses of metal in the region of its free end and two thicknesses of metal in the remaining part. These characteristics can be used with advantage when one does not have to fear the corrosion of the end

  free of the profile by the contents of the metal packaging.

  Several embodiments of the invention will now be described by way of example with reference to the accompanying drawings in which: Figure 1 is a partially cut away side view of a metal package; Figure 2 shows detail II of Figure 1 in an enlarged representation, with a portion of an upper metal package stacked on the first; Fig. 3 is a top view of a sealable film which can be used according to Figs. 1 and 2;

  Figure 4 is a longitudinal section, corresponding to

  FIG. 2, of another embodiment; Figure 5 shows a detail corresponding to Figure 2, but taken in another embodiment; Figure 6 shows a detail corresponding to Figure 2 but taken on another embodiment; and Figure 7 shows a detail corresponding to the

  Figure 2 but taken in another embodiment.

  1 shows a metal package 1 constituting a canister, and comprising a shank 2 against which is mounted a bottom, joined at a double fold 3 At the upper end of the shank 2, there is a rim section 4 which is closed tightly with a tear-off film 5 The profiled flange 4 is surrounded by a bend 7 which extends beyond the profiled flange 4 in the direction of the longitudinal axis 6 of

metal packaging 1.

  The barrel 2 can be manufactured in one piece or in two pieces of thin or very thin sheet, in a manner known per se The weldable film is of sufficient thickness and is preferably metallic The film 5 can be welded by According to the use case, the material and / or the thickness of the film 5 can be calculated so as to be able to withstand in the film itself as well as the weld region. , at all the demands that may arise in service Such closures welded film are even able to resist sterilization, so that they can be used without difficulty in the

  wide range of use of preserves.

  According to FIG. 2, the profiled flange 4 extends transversely

  to the longitudinal axis 6 (Figure 1) of the packaging

  In this case the profiled flange 4 is formed of two sheet thicknesses 8 and 9 and, externally, a third sheet thickness 10. A free end 11 of the profiled flange 4 is directed inwards, so that an annular cavity 12 is formed inside

profiled flange 4.

  In this embodiment, the free end 11 of the profiled rim 4 is certainly disposed inside the interior space 13 of the metal package 1, but it is protected from direct contact with the material of the

  filling, not shown, of the metal packaging 1.

  The fold 7 of the barrel has layers of sheets 14 and which are arranged at a certain spacing from one another. The fold 7 extends radially outwards, sufficiently far beyond the rest of the barrel 12 so that the double fold 3 of an upper metal package 16 of the same kind can be stacked on the inner metal package 1 In this construction, the fold 7 of the drum surrounds the lower part of the double fold 3, so that the upper metal package 16 can no longer move laterally with respect to the lower metal package 1 The metal packages 1, 16 are therefore

stackable.

  FIG. 3 is a view from above of the film 5, which is essentially circular and presents a paw of

  tear 17 at a single point of its circumference.

  In all the exemplary embodiments, the identical elements are designated by the same reference numbers. According to FIG. 4, the profiled rim 4 is composed of two thicknesses of sheet 18 and 19 applied against each other. The free end 11 of the profiled rim 4 is directed outwards and is disposed outside.

of the inner cavity 13.

  In FIG. 4, the shank 2 of the metal package 16 is narrowed in its lower part. In this way, the double fold 3 is more inward than in the case of FIGS. 1 and 2, so that the fold 7 of the barrel does not have to extend outward beyond the barrel 2 also

far as in Figures 1 and 2.

  In the exemplary embodiment according to FIG. 5, the lower part of the barrel of the metal package 16 is even more strongly inwardly shrunk than in FIG. 4, so that the outer surface 20 of the ply 7 of the barrel can in this case, the sheet metal layers 14, 15 of the bend 7 of the drum are also pressed against each other in

  the region of the top 22 of the fold 7 of the barrel.

  In FIG. 5, the sheet metal layers 18, 19 of the rim

  section 4 are again in contact with each other.

  However, in this case, the free end 11 of the rim

  section 4 is in the interior volume 13 of the packaging.

metal floor 1.

  In the exemplary embodiment according to FIG. 6, the conformation of the profiled edge 4 and the conformation of the fold 7 of the barrel correspond to those of FIG. 5. In metal packagings 1, 16, however, it is a matter of what two-piece packagings, ie packagings in which the barrel 2 has been manufactured in one piece with the bottom 23, by deep drawing At the transition between the barrel 2 and the bottom 23, the barrel 2 is

  slightly inwards, so that, likewise,

  In this case, the outer surface 20 of the bend 7 of the shank may be in alignment with the surface 21 of the shank 2. According to FIG. 7, this is once again referred to as metal packaging 1 , 16 in two parts, but in which the barrel is not inwardly squeezed in the bottom region. In this way, it is necessary for the outer surface 20 of the barrel fold 7 to protrude outwardly to the outside. the outer surface 21 of the shaft 2 The profiled edge 4 is here

  also a conformation that corresponds to Figure 4.

Claims (11)

  A metal package (1; 16) comprising a barrel (2) and a profiled flange (4) arranged perpendicularly to the longitudinal axis (6) of the barrel (2) and which is sealed tightly with the aid of a tear-off film (5), characterized in that the profiled flange (4) is surrounded by a bend (7) which extends beyond the profiled rim (4)   in the direction of the longitudinal axis (6).   2. Metal package according to claim 1, characterized in that the sheet layers (14, 15) of the   fold (7) of the barrel are arranged at a distance from one another.   3. Metal package according to claim 1, characterized in that the sheet layers (14, 15) of the bend of the barrel (7) are pressed against each other in   the region of a top (22) of the fold (7) of the barrel.   4. Metal package according to one of the claims   1 to 3, characterized in that the fold (7) of the barrel extends radially outwardly beyond the remainder of the barrel (2) and the fold (7) of the barrel surrounds a lower end of a barrel. upper metal package (16) stacked on the metal packaging (1).   5. Metal package according to one of the claims   1 to 3, characterized by the fact that a surface   outer edge (20) of the bend (7) of the barrel is at least approximately   in alignment with an outer surface (21) of the barrel (2).   6. Metal package according to one of the claims   1 to 5, characterized in that the profiled flange   (4) is formed of layers of plates (8 to 10; 18, 19) one above the other.   7. Metal package according to claim 6, characterized in that a free end (11) of the profiled flange (4) is disposed outside a volume   interior (13) of the metal package (1; 16).   8 Metal package according to claim 7, characterized in that the free end (11) of the profiled flange (4) is directed outwards and an outer edge of the film (5) is arranged in the region of   the free end (11) of the profiled flange (4).   9. Metal packaging according to one of the claims   1 to 6, characterized in that a free end (11) of the profiled flange (4) is disposed within the interior space (13) of the metal package (1, 16). 10. Metal package according to claim 9, characterized in that the free end (11) of the   profiled flange (4) is directed outwards.   Metal package according to claim 9, characterized in that the free end (11) of the profiled flange (4) faces inwards and the profiled flange (4) is formed of three thicknesses of metal sheets (8 to 10) in the region of its free end (11) and   two thicknesses of sheets (8, 9) in the remaining part.