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
  • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
  • B65D7/42—Details of metal walls
  • B65D7/44—Reinforcing or strengthening parts or members
• • 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
  • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
  • B65D1/40—Details of walls
  • B65D1/42—Reinforcing or strengthening parts or members
  • B65D1/44—Corrugations
• • 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
  • B65D1/00—Rigid or semi-rigid containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material or by deep-drawing operations performed on sheet material
  • B65D1/12—Cans, casks, barrels, or drums
  • B65D1/14—Cans, casks, barrels, or drums characterised by shape
  • B65D1/16—Cans, casks, barrels, or drums characterised by shape of curved cross-section, e.g. cylindrical
  • B65D1/165—Cylindrical cans
• • 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
  • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
  • B65D7/42—Details of metal walls
  • B65D7/44—Reinforcing or strengthening parts or members
  • B65D7/46—Corrugations

Definitions

• the present invention relates generally to the field of containers which comprise a box body made of a metallic material and a side wall of which comprises at least one stiffening molding.
• Some containers have a box body made of a metallic material.
• This box body must withstand different forces so as to prevent deformations likely to degrade the mechanical properties of the container.
• the side wall is particularly sensitive to two types of deformations:
• At least one stiffening molding on the side wall, so as to define an annular stiffening strip extending over at least a portion of the height of said side wall.
• stiffening moldings are rectilinear, extending generally parallel to the transverse lines, or even parallel to the longitudinal lines generatrices.
• stiffening moldings are effective to combat only one of the two aforementioned deformations (either faceted or axial crushing).
• the depth of molding makes it possible to choose which resistance to favor: a shallow depth favors resistance to deformations in axial crushing while a greater depth favors the resistance to deformation facets.
• the present invention proposes a new container structure whose box body comprises a side wall whose resistance performance is improved both against the deformations in facet as deformations in axial crushing.
• the container according to the invention comprises a box body made of a metallic material; which box body has a side wall closed by at least one bottom wall.
• the sidewall has at least one stiffening zone that extends over at least a portion of the height and circumference of said sidewall.
• the stiffening zone has a plurality of virtual lines which are intended to form rectilinear virtual lines on said flattened stiffening zone, advantageously generating longitudinal lines, guide transverse lines and inclined lines.
• the stiffening zone comprises at least one stiffening molding.
• said virtual lines of said stiffening zone are each cut by said at least one stiffening molding.
• the particular structure of the stiffening zone has the advantage of conferring increased resistance, simultaneously, to facet deformations and deformations in axial crushing.
• the side wall thus has increased performance for the same thickness or identical performance for a reduced thickness.
• This particular structure of the stiffening zone also has the advantage of limiting or even blocking the propagation of deformations.
• This structure also makes it possible to delay the appearance of the failure mode, and thus confers resistance for this failure mode.
• said at least one stiffening molding consists of a non-rectilinear stiffening molding whose contour is non-rectilinear; said at least one non-rectilinear stiffening molding advantageously has the general shape of a curved line, a polygonal line which is composed of at least two line segments, or a polyline which is composed of at least one line segment and a curve segment; the non-rectilinear stiffening molding of the polygonal line type advantageously comprises straight segments having a length of between 2 and 200 mm, and forming, between them, an angle of 90 ° +/- 60 °; said at least one stiffening zone comprises staggered patterns, corresponding to the surface of said at least one stiffening molding, and / or remaining patterns, corresponding to the surface surrounding said at least one stiffening molding; the offset patterns and / or the remaining patterns advantageously have a non-rectilinear contour, and said non-rectilinear contour comprises a junction portion located in a plane perpendicular to the longitudinal axi
• said at least one stiffening molding is continuous, extending over the entire circumference of said stiffening zone;
• the stiffening zone comprises several stiffening moldings, each distinct and each terminated by at least two ends; the stiffening moldings advantageously have a non-rectilinear contour which form U-shaped patterns which each comprise a central line segment extended by two lateral line segments; the U-shaped non-rectilinear stiffening moldings are advantageously arranged in pairs, symmetrically and opening away from each other, and the lateral line segments of a pair are formed between the lateral straight lines a non-rectilinear U-shaped stiffening molding of another pair.
• the invention also proposes a process for the manufacture of a container according to the invention.
• This method comprises a step of forming the side wall, flat or after its setting volume, to provide said at least one non-rectilinear stiffening molding.
• FIG. 1 is a general view in perspective of a first container according to the invention, the side wall comprises a stiffening zone which comprises a plurality of distinct and interleaved non-rectilinear stiffening moldings;
• FIG. 2 is a partial and enlarged view of the stiffening zone formed on the container of FIG. 1;
• - Figure 3 is a general view and perspective of an alternative embodiment of the first container according to the invention, the stiffening zone comprises a marking area;
• - Figure 4 is a general perspective view of a second container according to the invention, the side wall comprises a plurality of annular stiffening strips which each comprise a continuous non-rectilinear stiffening molding;
• FIG. 5 is a partial and enlarged view of two annular stiffening strips formed on the container of FIG. 4;
• FIG. 6 is a general and perspective view of an alternative embodiment of the second container according to the invention, of which two annular stiffening strips are separated by an intermediate annular strip devoid of stiffening molding (s);
• FIG. 7 is a schematic view in longitudinal section of a container according to the invention, with a partial and enlarged view of said container to illustrate the sections of the stiffening moldings.
• the container according to the invention advantageously consists of a can, for the packaging of a foodstuff for example.
• the container comprises a can body 1 which is made of a metallic material, for example aluminum or steel.
• the box body 1 comprises a side wall 2 which is closed by at least one bottom wall 3 (FIG. 7). In other words, the periphery of the bottom wall 3 is extended, upwards, by the side wall 2.
• the side wall 2 and the bottom wall 3 of the box body 1 can be made in one piece (for example by stamping).
• these two walls 2, 3 can also be manufactured independently of one another, and then secured together by any suitable operation (for example by crimping or welding).
• the side wall 2 advantageously has a generally cylindrical shape defining a longitudinal axis 2 ', for example in the form of a right circular cylinder.
• the side wall 2 can advantageously be defined by different types of virtual lines:
• longitudinal generating lines 2 a advantageously parallel to each other and parallel to the longitudinal axis 2 ',
• transverse lines 2b advantageously circular lines, extending preferably in planes perpendicular to the longitudinal axis 2 'and centered on this longitudinal axis 2', and
• inclined lines 2c advantageously helical lines for a cylindrical container, extending between the longitudinal generatrix lines 2a and the transverse lines 2b.
• These different virtual lines 2a, 2b and 2c are intended to form rectilinear virtual lines 2a, 2b and 2c (preferably straight lines or segments) on the side wall 2 laid flat (or unfolded or with cylindrical projection).
• the side wall 2 has two borders 21, 22 defining its height (FIG. 1), namely:
• This upper edge 22 is also intended to receive a closure element (not shown) to finalize the container (for example a peelable membrane or a metal disk with possibly a breaking line).
• a closure element for example a peelable membrane or a metal disk with possibly a breaking line.
• the container and in particular its box body 1, thus delimits an interior volume 6 for the packaging of the product of interest.
• the side wall 2 comprises at least one stiffening molding 7 defining at least one stiffening zone 8.
• stiffing molding in particular a ribbing (or a rib or a variation of curvature of the side wall 2 or commonly referred to in English as the "bead") formed in the side wall 2.
• Said at least one stiffening molding 7 consists of a stiffening molding whose shape is different with respect to the conventional annular moldings (ie a molding extending over the entire circumference of the side wall 2 and in a plane perpendicular to the longitudinal axis 2 'of this side wall 2).
• Such stiffening molding 7 is obtained for example by striking or embossing.
• Such a stiffening molding 7 can be made:
• said at least one stiffening molding 7 is provided projecting inwardly of the side wall 2 (towards its inner face and towards the internal volume 6).
• said at least one stiffening molding 7 advantageously has the shape of an open rib, opening towards the outside of the can body 1.
• This stiffening molding 7 is advantageously identical (or at least approximately identical) along its length, without geometric breakage.
• a stiffening molding 7 advantageously comprises (FIG. 7): a bottom 7a, for example in the form of a line 7a1 or in the form of a cylindrical portion 7a2, and
• this stiffening molding 7 may be of curved shape, for example in a semi-circle or half-oval.
• each stiffening molding 7 has the following dimensions:
• depth is meant advantageously the distance dimension between, on the one hand, the bottom 7a of the stiffening molding molding 7 and, on the other hand, the side wall 2. It still corresponds to the distance dimension between the offset surface 25 and the remaining surface 26, described hereinafter.
• “Width” advantageously means the distance dimension of the segment measured transversely to a longitudinal line 7 'of the stiffening molding 7 ( Figures 2 and 5).
• the depths and widths may be different depending on the stiffening moldings 7 and their position.
• the stiffening moldings 7 in this region can then be deeper; Conversely, the stiffening moldings 7 located towards the ends may be shallower to resist the axial force while decreasing their sensitivity to the presence of a possible crimp.
• the side wall 2 thus comprises two sets of surfaces (FIG. 7):
• offset surface 25 also called “offset surface” or “resulting surface”
• a remaining surface 26 also called “residual surface” or “original surface”
• a remaining surface 26 also called “residual surface” or “original surface”
• the remaining surface 26 advantageously extends in the bulk of the portions of the side wall 2 which are located at its two edges 21, 22.
• the offset surface 25 is offset relative to the remaining surface 26, according to at least one constant or variable level.
• a stiffening zone 8 may comprise a single stiffening molding 7 or several stiffening moldings 7.
• Said at least one stiffening zone 8 extends over at least a portion of the height of the side wall 2 (or even the entire height of the side wall 2) and over at least a portion of the circumference of the side wall 2 ( even the entire circumference of the side wall 2).
• a stiffening zone 8 extends over:
• a transverse angular sector (along the transverse lines 8b) of at least 10 °, preferably at least 180 ° and preferably 360 ° to form an annular band stiffening.
• Said at least one stiffening zone 8 advantageously comprises at least one non-rectilinear stiffening molding 7 (not in a straight line).
• non-rectilinear stiffening molding includes stiffening moldings 7 which, advantageously flattened or unfolded or by cylindrical projection, are in the form of curves, advantageously in the sense of an assembly which is not necessarily aligned, having or not one or more break of tangency.
• non-rectilinear stiffening molding is still meant a stiffening molding 7 whose contour 7b or the longitudinal line 7 'is non-rectilinear ( Figures 2 and 5).
• longitudinal line 7 is meant a line extending advantageously parallel to and at an equal distance from two longitudinal edges of the stiffening molding 7.
• the non-rectilinear stiffening moldings 7 advantageously have a general shape chosen from:
• a polyline (not shown) composed of at least one straight segment and one curve segment.
• the curved line or the curve segment may or may not include a tangency break.
• the stiffening molding 7 may comprise at least one branch (for example in the form of H, X or Y), or may be devoid of such branches.
• a stiffening molding 7 of the polygonal line type comprises:
• straight segments 72, 73 having a length of between 2 and 200 mm
• said at least one stiffening zone 8 comprises at least one set of patterns 9 which are defined by said at least one stiffening molding 7:
• At least one offset pattern 95 corresponding to the offset surface of said at least one stiffening molding, and / or
• Pattern advantageously means a set of geometric elements that are repeated.
• said at least one stiffening zone 8 advantageously comprises several of these patterns 9 which are formed by one or more stiffening moldings 7.
• the patterns 9 may be identical to each other, or similar to each other, or different from each other (for example at the contours, the dimensions and / or the orientation).
• a stiffening zone 8 may thus comprise a single elementary pattern 9, or even a sum of elementary patterns 9.
• the patterns 9 can be distinct and juxtaposed or even nested ( Figures 1 to 3 and 5); the non-rectilinear stiffening rib 7 is thus terminated by at least two ends 71 (depending in particular on its shape and its number of branches).
• the patterns 9 may also together form a continuous stiffening molding 7, advantageously in the form of a frieze (FIGS. 4 to 6), possibly imbricated in at least one other stiffening molding 7.
• the offset patterns 95 and / or the remaining patterns 96 preferably have a concave outline; these offset patterns 95 and / or these remaining concave patterns 96 may be nested or non-nested.
• concave pattern (or non-convex pattern) is advantageously meant a pattern in which there are at least two points A and B, taken in this pattern, connected by a segment [A, B] which is not entirely contained in said pattern.
• the offset patterns 95 and / or the remaining concave patterns 96 thus comprise at least one concave portion.
• each offset pattern 95 has the general shape of a U which includes a central line segment 72 extended by two lateral line segments 73.
• the lateral straight lines 73 extend here, on the one hand, parallel to each other and, on the other hand, perpendicularly and on the same side with respect to the central line segment 72.
• the U-shaped offset patterns 95 thus comprise a concave portion delimited by the lateral straight line segments 73.
• the patterns 9 may also have a general shape of arc or oval arc (for example in the general form of C).
• the remaining patterns 96 may also include at least one concave portion.
• the continuous stiffening molding 7 defines remaining patterns 96 in the general shape of T having two lateral concave portions.
• ком ⁇ онент 95 or a remaining pattern 96 which extends in the bulk of the concave portion, respectively, of another offset pattern 95 or other remaining pattern 96.
• Figures 1 to 3 show staggered patterns 95 which are nested and Figures 4 to 6 show remaining patterns 96 which are nested.
• the non-rectilinear contour 951, 961 of the offset patterns 95 and / or the remaining patterns 96 is non-rectilinear.
• This contour 951, 961 non-rectilinear advantageously comprises:
• junction portion 9511, 9611 (or angled portion) situated in a transverse plane P perpendicular to the longitudinal axis 2 ', advantageously a point whose tangent extends parallel to this perpendicular plane P (FIG. 2) or a section extending in said perpendicular plane P ( Figure 5), and
• the stiffening zone 8 can be defined by several types of virtual lines (respectively confused with the longitudinal generatrix lines 2a, the transverse lines 2b and the inclined lines 2c mentioned above), namely:
• longitudinal generating lines 8a advantageously straight lines parallel to each other and parallel to the longitudinal axis 2 ',
• transverse lines 8b advantageously circular lines, extending preferably in planes perpendicular to the longitudinal axis 2 'and centered on this longitudinal axis 2', and
• Inclined lines 8c advantageously helical lines for a cylindrical container, extending between the longitudinal generatrix lines 8a and the transverse lines 8b, and centered on this longitudinal axis 2 '.
• the inclined lines 8c form an angle other than 0 ° or 90 °, relative to the planes perpendicular to the longitudinal axis 2 '.
• the different virtual lines 8a, 8b and 8c thus pass through the stiffening zone 8 (or pass through this stiffening zone 8).
• the virtual lines 8a, 8b, 8c are each cut by said at least one stiffening molding 7, preferably by said at least one non-rectilinear stiffening molding 7.
• These virtual lines 8a, 8b, 8c are each cut at least once, or several times, by the at least one stiffening molding 7 (in particularly by its outline 7b).
• the stiffening zone 8 flat or unfolded or cylindrical projection, is devoid of straight lines 8a, 8b and 8c rectilinear which are free of at least one cut by said at least one stiffening molding 7 (in particular by its outline 7b).
• the rigidification zone 8 flattened or unfolded in a cylindrical projection, has no rectilinear virtual line 8a, 8b and 8c which is not cut at least once by said at least one stiffening molding 7 (in particularly by its outline 7b).
• Said at least one stiffening zone 8 advantageously extends over at least half the height of the side wall 2.
• the side wall 2 may comprise an annular stiffening band which comprises:
• the stiffening zone 8 comprises several non-rectilinear stiffening moldings 7 which are distinct and each terminated by two ends 71.
• the non-rectilinear stiffening moldings 7 form concave offset patterns 95 which are interlocked into each other.
• each non-rectilinear stiffening mold 7 forms a U-shaped offset pattern 95 which comprises the central line segment 72 extended by the two lateral straight line segments 73.
• Each lateral line segment 73 is terminated, opposite to the central line segment 72, by one of the free ends 71.
• Each offset pattern 95 is further oriented so that its central line segment 72 and its lateral line segments 73 define angles between 30 ° and 60 ° (preferably angles between 40 ° and 50 °, more preferably angle of 45 °) by relative to the longitudinal generative lines 8a and to the transverse lines 8b.
• the central line segment 72 and one of the lateral line segments 73 together form the two longitudinal portions 9512 connected by a joining portion 9511.
• the offset patterns 95 are arranged in pairs, symmetrically and opening away from each other to form together a shape H.
• the central straight segments 72 of a pair of offset patterns 95 are thus juxtaposed.
• the lateral straight segments 73 of the two juxtaposed offset units 95 are themselves aligned.
• a pair of side line segments 73 of a pair of offset patterns 95 is formed between the side line segments 73 of an offset pattern 95 of another pair of offset patterns 95.
• Such a configuration of the concave and interlocking offset patterns 95 is particularly effective in providing increased and simultaneous resistance to facet deformations and axial crushing deformations.
• This particular structure of the stiffening zone 8 also has the advantage of limiting or even blocking the propagation of deformations.
• the stiffening zone 8 may be provided with a marking zone 10 which is free from stiffening moldings 7.
• This marking zone 10 is surrounded / delimited by these stiffening moldings 7.
• the marking zone 10 here has an oval shape, but it could have any other desired shape.
• This marking area 10 is particularly interesting for the legibility of a visual element, such as a text, a logo or an image.
• the side wall 2 comprises continuous non-rectilinear stiffening moldings 7 which each extend over the entire circumference of a stiffening zone 8.
• each non-rectilinear stiffening molding 7 here forms a repetition of offset patterns 95, identical to each other, which are arranged in two lines, alternately and interconnected.
• each non-rectilinear stiffening mold 7 forms U-shaped offset patterns 95 which each comprise the central line segment 72 extended by the two lateral straight line segments 73.
• the central right segments 72 of the two lines are arranged parallel to each other; and the side line segments 73 of the two lines are arranged parallel to each other.
• the lateral straight lines 73 of two opposite shifted patterns 95 are connected by transverse line segments 74 (here parallel to the center line segments 72).
• the off-line patterns 95 of a line are here oriented to open toward the offset patterns 95 of the other line.
• Each offset pattern 95 is further arranged such that each of its side line segments 73 is located between the two side line segments 73 of an opposite offset pattern 95.
• Each U-shaped offset pattern 95 is further oriented such that its center line segments 72 and its side line segments 73 are oriented, respectively, parallel to the guide transverse lines 8b and the longitudinal generatrix lines 8a.
• the central line segment 72 and the two lateral line segments 73 form an offset pattern 95 and a remaining pattern 96 whose contours 951, 962 each comprise, respectively, the joining portion 951 1, 9611 and the two longitudinal portions 9512, 9612 above.
• the continuous stiffening molding 7 again defines remaining patterns 96 in the general shape of T having two lateral concave portions.
• the remaining 96 successive patterns are inverted relative to each other and are nested.
• the side wall 2 thus comprises annular stiffening strips 8, each comprising a continuous non-rectilinear stiffening strip 7, separated from each other by annular bands 11, narrow and unmolded (Figure 5).
• This configuration of the annular stiffening strips 8 is useful for receiving a readable visual element, such as a text, a logo or an image.
• the side wall 2 may again be provided with a marking zone 10 which is free of stiffening moldings 7 and which is surrounded / delimited by these stiffening moldings 7.
• This marking zone 10 here has the shape of a continuous annular band.
• the present invention also relates to a process for the manufacture of a container according to the invention.
• This method advantageously comprises a step of forming the side wall 2, flat or after it has been made to volume, to provide said at least one stiffening molding 7.
• This forming step is for example carried out by means of tools that can be composed of male and female parts, to print the shape on the metal.
• tools can for example be in the form of flat parts (rails) or left parts (chucks).
• This method makes it possible to obtain a side wall 2 which thus comprises two sets of surfaces: said at least one offset surface 25 and said at least one remaining surface 26.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Ceramic Engineering (AREA)
• Containers Having Bodies Formed In One Piece (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)
• Rigid Containers With Two Or More Constituent Elements (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=62816755

Family Applications (1)

Country Status (8)

Families Citing this family (1)

Family Cites Families (4)

• 2018
  • 2018-04-11 FR FR1853181A patent/FR3080098A1/fr not_active Ceased
• 2019
  • 2019-04-09 WO PCT/EP2019/058972 patent/WO2019197411A1/fr not_active Ceased
  • 2019-04-09 CA CA3094434A patent/CA3094434A1/fr not_active Abandoned
  • 2019-04-09 EP EP19715134.3A patent/EP3774562A1/de not_active Withdrawn
  • 2019-04-09 BR BR112020020311-4A patent/BR112020020311A2/pt not_active Application Discontinuation
  • 2019-04-09 CN CN201980024759.4A patent/CN111954628A/zh active Pending
  • 2019-04-09 MX MX2020010569A patent/MX2020010569A/es unknown
  • 2019-04-09 US US17/045,692 patent/US20210024241A1/en not_active Abandoned

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