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
  • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
  • B65D3/28—Other details of walls
  • B65D3/30—Local reinforcements, e.g. metallic rims
• • 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
  • B65D43/00—Lids or covers for rigid or semi-rigid containers
  • B65D43/02—Removable lids or covers
  • B65D43/0235—Removable lids or covers with integral tamper element
  • B65D43/0237—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element
  • B65D43/0256—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the outside, or a part turned to the outside, of the mouth of the container
  • B65D43/026—Removable lids or covers with integral tamper element secured by snapping over beads or projections before removal of the tamper element only on the outside, or a part turned to the outside, of the mouth of the container leaving only an inside friction after removal of the tamper element
• • 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
  • B65D51/00—Closures not otherwise provided for
  • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
  • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00064—Shape of the outer periphery
  • B65D2543/00074—Shape of the outer periphery curved
  • B65D2543/00092—Shape of the outer periphery curved circular
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00018—Overall construction of the lid
  • B65D2543/00259—Materials used
  • B65D2543/00296—Plastic
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
  • B65D2543/00509—Cup
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
  • B65D2543/00546—NO contact
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
  • B65D2543/00555—Contact between the container and the lid on the inside or the outside of the container on both the inside and the outside
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00592—Snapping means
  • B65D2543/00601—Snapping means on the container
  • B65D2543/00611—Profiles
  • B65D2543/00638—Rolled edge
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00592—Snapping means
  • B65D2543/00601—Snapping means on the container
  • B65D2543/00675—Periphery concerned
  • B65D2543/00685—Totality
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00592—Snapping means
  • B65D2543/00712—Snapping means on the lid
  • B65D2543/00722—Profiles
  • B65D2543/0074—Massive bead
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00444—Contact between the container and the lid
  • B65D2543/00592—Snapping means
  • B65D2543/00712—Snapping means on the lid
  • B65D2543/00787—Periphery concerned
  • B65D2543/00796—Totality
• • 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
  • B65D2543/00—Lids or covers essentially for box-like containers
  • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
  • B65D2543/00824—Means for facilitating removing of the closure
  • B65D2543/00833—Integral tabs, tongues, handles or similar
  • B65D2543/00851—Integral tabs, tongues, handles or similar on the central part of the lid

Definitions

• the invention relates to a cardboard composite can with a sleeve made of paper or cardboard composite whose opening edge is formed at least one end to form at least three, at least partially substantially parallel layers of the sleeve material to the outside, wherein the free end of the sleeve having position between an inner layer and an outer layer is arranged.
• Cardboard composite cans are used in particular for receiving solid, optionally free-flowing or even fluid substances, for example foods or luxury foods, such as chips, coffee, biscuits, tobacco, etc.
• the lower part of the cardboard composite can formed from the sleeve and the bottom, and in particular the sleeve which forms the lateral surface of the cardboard composite can, consists of a paper or cardboard composite and generally carries an imprint characterizing the contents of the cardboard composite can.
• the sleeve of the cardboard composite box on its inside often a lamination of a substantially gas-impermeable material, such as metal, plastic, metal-plastic composites or the like on.
• a substantially gas-impermeable material such as metal, plastic, metal-plastic composites or the like on.
• BESTATIGUNGSKOPIE Cardboard composite exists.
• a membrane of gas impermeable material such as metal, plastic or the like, gas-tight, in particular sealed, in order to further protection and a longer shelf life of the packaged goods and to protect the consumer from accidental or intentional damage or contamination of the packaged goods.
• a membrane seal is durably more or less completely removed during the first opening of the cardboard composite can, whereby a successful opening of the cardboard composite can be clearly seen.
• a lid on the opening edge of a can, which forms a so-called tamper-evident closure.
• the term "tamper-evident closure” refers to such a lid which is fixed to the opening edge of the can so that it as such can not be separated from the can without destroying the lid and / or the can that a first-opening the can or a first-time removal of the lid is readily apparent.
• a disadvantage is that in the manner of a Originalitatsver gleiches formed lid of the aforementioned type can be used only at - cans made of glass, metal or plastic, since the undercut of the separable portion of the lid bulge of the can in the region of its peripheral edge a certain stability and shape - Contain that must not be achieved in conventional cardboard cans so far.
• the US 4 557 414 is a cardboard composite can with an opening edge according to the preamble of claim 1 can be removed.
• the opening edge is thereby folded outwards so that three layers of the sleeve material are partially arranged approximately parallel and extending the free end of the sleeve having position between the inner and the outer layer.
• studies have shown even with such an opening edge that he has a sufficient to hold a lid designed in the form of a tamper only insufficient stability and the peripheral edge when pulling the lid up on or can unroll.
• the invention is therefore based on the object, the peripheral edge of a cardboard composite can with a sleeve of paper or cardboard composite form such that it is designed to functionally reliable arrangement of a tamper-evident lid, which opens the edge with a substantially parallel to the sleeve arranged, separable from the lid section engages outside locking, is in the situation.
• this object is achieved in a cardboard composite box of the type mentioned above in that the layers of the sleeve material in the region of the opening edge are pressed together.
• the embodiment of the invention gives the opening edge already when the opening edge of only three, at least partially approximately parallel layers is formed, a perfect dimensional stability, so that it gives a formed in the form of a tamper-evident lid of the above type a secure fit and a non-destructive detachment of the same without reliably isolating its section under cross-section along its line of weakness compressed according to the invention.
• a winding or unrolling of the present invention pressed-in opening edge is prevented in particular by the arranged between at least one inner and at least one outer layer position with the free end of the sleeve material, which come to this parallel to the plant layers act like an abutment and reliably prevent unrolling of the opening edge.
• the cover peeled off with force, then it comes to at least partially ruptures of the lid and / or the sleeve material in the region or below the opening edge of the box, so that a first-time opening of the can is readily apparent and the lid in particular no longer on put the can on. Due to the at least three-layered design of the opening edge, the latter, even if its layers have been compressed as a result of the compression, has a sufficient thickness to which it is subjected. gripping portion of the lid to give a secure and lasting hold.
• the inventively designed peripheral edge of the can is also advantageous if a lid designed in the form of a tamper-evident closure is not provided.
• a lid designed in the form of a tamper-evident closure is not provided.
• its high dimensional stability can be exploited in order to produce in the area of the opening edge by means of hot pressing tools on the inside, i.
• a sealing membrane which can be achieved due to the high stability of the opening edge over the prior art increased sealing pressures and thus reduced sealing times, resulting in increased productivity.
• the dimensional stability of the opening edge according to the invention is also so great that it is sufficient in the case of the inside Aufêteins a sealing membrane usually to move a hot seal stamp inside the can in the region of the peripheral edge, without the application of a back pressure would be required from the outside as is the case with prior art paperboard cans.
• the opening edge of the invention also has the additional advantage that the free end having the position of the sleeve material is received between at least an inner and an outer layer thereof, so that on the one hand the cutting edge, which depending on the paper or cardboard material may have perceived as unaesthetically perceived frayed, is not visible and on the other hand - if the sleeve is provided with an inside lamination - do not come to a partial detachment of the lamination by mechanical stress in the region of the opening edge can.
• the opening edge of course more than three, at least partially arranged approximately parallel, pressed together layers of the sleeve material, it is sufficient in most cases for perfect dimensional stability of the opening edge, if he exactly three, at least partially substantially parallel layers of the Sleeve material, wherein the free end of the sleeve having position between the inner and the outer layer of the sleeve material is arranged.
• the free end of the sleeve having position extends substantially over the entire height of the opening edge.
• a preferred embodiment provides that the sum of the wall thicknesses of the substantially parallel layers of the opening edge as a result of compression at most about 90%, in particular at most about 80%, the sum of the wall thicknesses a corresponding number of unpressed layers of the sleeve material, wherein in particular the sum of the wall thicknesses of the substantially parallel layers of the opening edge as a result of compression at most about 70%, in particular between about 60% and about 70%, the sum of the wall thicknesses can be a corresponding number of unpressed layers of the sleeve material.
• Such - permanent - compression of the paperboard composite material by plastic deformation during compression can be achieved in a simple manner by appropriate adjustment of the pressure and / or temperature during the pressing process.
• the lower bending edge of the opening edge extends substantially perpendicular to the sleeve, wherein preferably the inner and outer peripheral edge of the lower bending edge are formed substantially sharp-edged.
• the opening edge thus has a substantially rectangular profile, wherein the Umlegeadien the inner and the outer peripheral edge of the bending edge can be approximately 0.
• an optimal and highly stable, flat locking edge for the lid is formed, which is e.g. in a simple manner can be generated by the opening edge is supported at its lower, the lower bending edge forming end during the pressing of the layers against a forming die (calibration tool) as an abutment.
• the opening edge may be formed for reasons of a simple and cost-effective production to achieve a perfect stability in the form of an adhesive-free Preßharm the layers of the sleeve material.
• the sleeve can - if desired - have a particular over the opening edge with outwardly extending inner lining, as it is known as such in generic cardboard composite cans for protection against moisture, leaking odors and the like.
• the inner lining can preferentially example of a weldable material, such as a thermoplastic, be formed or contain such.
• the sleeve has an outer coating extending outwards, in particular over the opening edge, and / or outer coating, the outer coating or lacquer again being preferably formed from or containing a weldable material can.
• the sleeve of the cardboard composite can is provided with such an inner lining and / or with such an outer coating or lacquering, it can further be provided that the inner lining of at least one layer in the region of the opening edge is welded to the outer coating or lacquering of at least one adjacent layer is what can be achieved in a simple manner by suitable pressure and temperature selection during the pressing of the layers of the sleeve material in the region of the opening edge.
• suitable pressure and temperature selection during the pressing of the layers of the sleeve material in the region of the opening edge.
• a tight closing membrane is arranged on the inner lining in the region of the opening edge, wherein the membrane is preferably arranged sunk in the sleeve and exclusively is fixed with an annular, sleeve-parallel connection surface on the inner lining, in particular sealed to this, for example, to ensure a trouble-free arrangement of a formed in the form of a tamper-evident lid.
• such a membrane optionally provided with a tear-open tab, can also be dispensed with in the case of a corresponding design of the lid, if it rests in a substantially gas-tight manner even after the first removal from the can of the inner lining of the sleeve and thus ensures a satisfactory tightness of the can.
• a lid designed in the form of a tamper-evident closure engages over the opening edge with a section arranged essentially parallel to the sleeve, whereby the portion of the opening engaging the opening edge of the sleeve Cover is separable along a line of weakness of the lid, so that the lid - after separating its the opening edge of the invention under cross-section along the line of weakness - is removable from the opening edge of the sleeve.
• the latter In addition to the opening edge of the sleeve engaging under the outside, detachable from the remaining lid portion of the lid, the latter preferably has a substantially parallel to the sleeve extending, the sleeve at least in the region of its opening edge on the inside adjacent portion over which the lid after separating the the opening edge on the outside under cross-section can be fixed to the opening edge of the sleeve.
• the outer diameter of the opening edge of the sleeve inside adjacent portion of the lid to the inner diameter of the sleeve in the region of the opening edge slightly exceeds, so that the cover after detachment of the opening edge outside under cross-section in the manner of a clamping connection to the opening edge of the sleeve is releasably fixed.
• a largely dense connection between the can and the lid can be achieved, in particular even after the first removal of the lid with separation of its opening edge of the box under the invention, the outer portion.
• the can generally has an opening edge of the aforementioned type arranged at the one end of the sleeve, while it is closed by a bottom at its end opposite the opening edge of the sleeve.
• Fig. 1 is a schematic side view of an embodiment of a cardboard composite can according to the invention
• FIG. 2 shows a schematic plan view of the cardboard composite can according to FIG. 1 from above;
• FIG. 3 shows a schematic detail view of the opening edge of the cardboard composite can according to FIGS. 1 and 2 corresponding to the cutout A according to FIG. 1 in a sectional illustration;
• Fig. 4 is a schematic detail view of one at the opening edge of the cardboard composite box of FIG. 1 to 3 'set, a tamper evident lid forming in a sectional view.
• a cardboard composite can 1 which has a shell 2 forming its outer surface of a paper or cardboard composite material.
• the sleeve 2 has at its upper end an opening edge 3 explained in more detail below and is provided at its opening edge 3 opposite, in Fig. 1 lower end with a bottom 4, which is fixed in any known manner on the sleeve 2.
• the sleeve 2 with a not shown inner lining, e.g. made of metal and / or plastic, be coated, which gives the sleeve 2 a perfect gas tightness.
• the bottom 4 in particular if this is likewise formed from a paper or cardboard composite material.
• the sleeve 2 may also be provided on the outside with an outer coating or coating, also not shown, which is e.g. having a content of the box 1 identifying lettering or the like. While the sleeve 2 in the present exemplary embodiment has an approximately circular cross-section (cf., in particular, FIG. 2), this, of course, can also have an oval, polygonal or differently configured shape. It is also conceivable that the sleeve 2 instead of its rectilinear configuration according to FIG. 1 below the opening edge 3 has a narrowing from the bottom 4 upwards cross-section (not shown) to compensate for the given by the opening edge 3 cross-sectional widening and a parallel arrangement several doses 1 close together to allow.
• the permanent and dimensionally stable opening edge 3 of the sleeve 2 is designed in such a way that it forms essentially three parallel edges. allel arranged layers 2a, 2b, 2c is formed to the outside, wherein the layers 2a, 2b, 2c are pressed together and the free end 2d of the sleeve 2 having layer 2b between the inner layer 2a and the outer layer 2c is arranged.
• the opening edge 3 of the sleeve 2 in the present embodiment by folding the sleeve material in the region between the inner layer 2a and the outer layer 2c by approximately 180 ° radially outward (fold Fi) and by further folding of the sleeve material in the region between the outer layer 2c and the middle layer 2b formed by about 180 ° radially inwardly (fold F 2 ), wherein the parallel layers 2a, 2b, 2c of the sleeve material in the region of the opening edge 3, in particular substantially over the entire height H, are pressed together, so that the layers 2a, 2b, 2c, at least in their central region - in this case practically parallel to one another over their entire area.
• the compression was carried out in the present embodiment such that such a plastic deformation or compression of the opening edge 3 forming layers 2a, 2b, 2c of the sleeve material has adjusted that the sum of the wall thicknesses Dkompr the substantially parallel layers 2a, 2b, 2c of the opening edge 3 or the total thickness of the opening edge 3 as a result of the pressing is about 75% of the sum of the wall thicknesses of a corresponding number of unpressed layers of the sleeve material.
• the free end 2d of the middle layer 2b may preferably be in contact with the inner layer 2a and / or the outer layer 2c in the region of the fold Fi on its end face S.
• the under bending edge 2e of the opening edge 3 in the region of the fold F2 extends substantially perpendicular to the sleeve 2 or perpendicular to the three pressed together layers 2a , 2b, 2c of the opening edge 3 and the inner 2f and the outer peripheral edge 2g of this bending edge 2e are sharp-edged, so that an approximately rectangular cross-section of the opening edge 3 results.
• the press connection in this case is designed without adhesive, with a perfect stability of the opening edge 3 is obtained, which - as already mentioned - in particular for receiving a hereinafter with reference to FIG. 4 explained in more detail lid in the form of a tamper-evident closure is suitable.
• the opening edge 3 according to FIG. 4 may have a configuration corresponding to FIG. 3, but is shown in FIG. 4 for reasons of illustration shown only in the form of a thickening, in the region of which at least three approximately parallel layers 2a, 2b, 2c (Fig. 3) of the sleeve material are pressed together.
• the pressing pressure was chosen slightly higher in this case, so that the sum of the wall thicknesses D kompr of the substantially parallel layers 2a, 2b, 2c of the opening edge 3 or the total thickness of the same as a result of pressing about one third of the sum of the wall thicknesses of a corresponding number at unmolded layers of the sleeve material.
• a tamper-evident lid 5 is fixed, which may be made for example of a suitable plastic material.
• the lid 5 has a substantially parallel to the sleeve 2 arranged portion 6, which engages under the opening edge 3 of the sleeve 2 on the outside latching.
• the portion 6 of the lid 5 is provided in its sleeve facing inner, arranged below the opening edge 3 area with a locking projection 7, which prevents the lid 5 can be removed with the section 6 on the opening edge 3 away from the cardboard composite box.
• Both the portion 6 of the lid 5 and the locking projection 7 preferably extend over the entire circumference of the lid 5.
• the circumferential edge 3 of the sleeve 2 on the outside latching cross-section 6 of the lid 5 is a predetermined breaking or weakening line 8 of the lid 5 separable, so that the lid 5 is removable only after separation of the section 6 along the line of weakness 8 of the can and the first-time opening readily recognizable
• the inventive design of the opening edge 3 of the sleeve 2 this gives a sufficient stability and thickness, in order to be able to use the cover 5 formed in the form of a tamper-evident closure in a box 1 (FIG. 1) made of paper or cardboard composite material.
• the weakening line 8 is arranged between a radial section 9 of the cover 5 and the section 6 seated on the upper end side of the opening edge 3 of the sleeve 2 in FIG. 4.
• a tab (not shown) may further be provided, which facilitates the manual gripping of the section 6 in order to separate it along the weakening line 8 from the remaining cover 5.
• the lid 5 is provided in the present embodiment with a substantially parallel to the sleeve 2 and to the portion 6 extending, the sleeve 2 at least in the region of the opening edge 3 inside adjacent section 10, via which the cover 5 after separation of the opening edge 3 outside under cross-section 6 on the sleeve 2 can be fixed.
• the section 10 in turn extends in particular around the entire circumferential area of the cover 5. While in the embodiment shown, the top open sleeve 2 covering, arranged substantially perpendicular to this section 11 is arranged at the portion 10, sunk into the sleeve 2, this can of course be arranged above the opening edge 3 of the sleeve 2.
• a tightly closing membrane (not shown), for example of metal, plastic, etc., be sealed, which is arranged sunk in the sleeve 2.
• .ist is preferably a central portion of the membrane along a line of weakness of the sleeve 2 on the inside fixed portion of the membrane, for example by means of a provided on the central portion of the membrane tear-open, detachable.
• the can body by jamming between a stationary inner mandrel with a the inner cross section of the sleeve 2 approximately corresponding outer cross section and a stationary outer ring with an outer cross section of the sleeve 2 approximately corresponding inner cross section fixed.
• a lid 5 simulating metal ring was arranged and brought to the lower bending edge 2e and to the outer peripheral surface of the outer layer 2c to the plant.
• the metal ring was moved by means of a pneumatic cylinder with about 100 mm diameter from the fixed sleeve 2 upwards, wherein the pressure in the pneumatic cylinder was measured. At a pressure of about 7 bar (corresponding to a withdrawal force of about 5000 N) tore the Material of the sleeve 2 below the opening edge 3 on; the opening edge 3 itself remained intact.
• the paper or paperboard composite edge of the invention has a more than seven times increased stability over a conventional opening edge, and in particular for receiving a lid, e.g. in the form of a tamper-evident closure, for sealing on the inside of a membrane without external support of the sleeve, etc., is outstandingly suitable.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cartons (AREA)
• Laminated Bodies (AREA)
• Paper (AREA)
• Packages (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

ID=34969385

Family Applications (1)

Country Status (5)

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• 2004
  • 2004-05-28 DE DE102004026186A patent/DE102004026186A1/de not_active Withdrawn
• 2005
  • 2005-05-27 WO PCT/EP2005/005767 patent/WO2005115851A1/fr not_active Ceased
  • 2005-05-27 PL PL05748413T patent/PL1753665T3/pl unknown
  • 2005-05-27 EP EP05748413A patent/EP1753665B1/fr not_active Expired - Lifetime
  • 2005-05-27 AT AT05748413T patent/ATE395267T1/de active
  • 2005-05-27 DE DE502005004130T patent/DE502005004130D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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