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
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/72—Contents-dispensing means
  • B65D5/74—Spouts
  • B65D5/741—Spouts for containers having a tubular body
  • B65D5/743—Spouts formed by deforming or tearing scored or incised parts of the side-wall of containers
  • B65D5/744—Spouts formed by deforming or tearing scored or incised parts of the side-wall of containers combined with swivelling devices having a bottom-wall and two side-walls

Definitions

• the present invention relates to a package made of cardboard material and having an openable and closable spout, as well as a blank for making such a package.
• the prior art also encompasses packages in which the spout is formed from the cardboard material itself.
• packages and blanks are disclosed e.g. in US-A-2,634,897, US-A-3,184,137, US-A-3,204,250, US-A- 4,111,351 and US-A-4,194, 677.
• these prior-art pack ⁇ ages and blanks are impaired by several drawbacks.
• some of the packages are not especially well suited for holding free-flowing pulverulent or granular materials, such as salt, sugar, flour and fine washing powder, in which case the unopened package has to have an especially high tightness.
• Some of these prior-art packages further require that spout components be so punched in the blank that the latter is weakened or that it becomes very diffi cult to erect the finished package while maintaining a precise fit between the various spout components.
• US-A-2,634,897 thus discloses a package and a blank.
• punching is performed in three diffe- rent panels, which are then glued in overlapping relation ship when the package is erected.
• punching is performed in two end-wall panels glued in overlapping relationship.
• the spout is so designed that the contents of the package may escape between the punched-out parts of the inner spout compo ⁇ nent and the punched-out side edges of the outer spout component.
• Another drawback of this prior-art constructi resides in the large width of the spout components.
• the spout must, when formed in but two en -wall panels glued in overlapping relationship, be so oriented that the package has to be held in a laid-down position when the packaged goods is poured out.
• the need of orien ing the package in this way heavily restricts the utilit of the package and renders it unsuitable for e.g. salt o sugar.
• US-A-3,184,137 discloses a package and a blank for making the package.
• the spout is designed as an extension piece of an adhesive bonding flap used f gluing the blank to a sleeve.
• This construction not only involves a lower degree of utilisation of the cardboard material, but also makes it extremely difficult to erect the package, since this requires the use of a special machine for folding, in a preparatory step, the extensio piece so as to place it in an overlapping position rela ⁇ tive to the remainder of the package blank.
• the construction is such that pulverulent or granular goods may escape through punched-out portions of the spou components when the package is unopened.
• US-A-3,204,250 also discloses a package and a blank, in which the spout is formed of components from three panels glued in overlapping relationship. As mentioned before, this entails higher requirements on fit when the package is erected. Also in this case, the unopened pack ⁇ age is liable to leak pulverulent or granular goods at th punched-out end of the spout.
• US-A-4,111,351 discloses a package and a blank, in which a separate spout is provided on the inside of a sid wall panel.
• the spout is designed to dose a predetermined amount of goods on each occasion of discharge, but may also be designed for continuous discharge of the goods.
• this construction provides a tight unopened pack age, it requires an additional component which has to be separately mounted in the making of the package.
• US-A-4,194,677 discloses a package and a blank, in which the spout components are formed in two side wall panels glued in overlapping relationship and in which the spout channel side walls are designed so as to restrict the outward movement of the spout.
• this prior-ar spout construction suffers from several drawbacks.
• an adhesion-counteracting material has to be applied roun the inner component of the spout, which makes the unopene package untight, since there may be a leakage between the end edges of the inner and the outer spout components placed at a short distance from one another. Further, the spout side walls are insufficiently guided in the lateral direction and may thus come to move towards one another under the action of the packaged goods when the spout is moved inwards.
• FR-A-2,032,129 discloses a package and a blank, in which one of the spout components is formed in a side wal panel and the other spout component is formed in an addi ⁇ tional flap which is glued in overlapping relationship to the side wall panel.
• the components formed in the addi ⁇ tional flap comprise two spout side walls delimited from surrounding parts of the additional flap by an arcuate punched line and merging into hook-forming punched lines. In the erected and closed package, these spout side walls are free of adhesive bond to adjoining parts of the outer side wall panel.
• this prior-art package is impaired by several inconveniences, the most important being the fact that the opened package is untight after the spout has been closed. This is due to the formation o a through hole when the spout it pulled out and deformed to form the pouring lip of the spout.
• the spout side walls may easily come to bend inwards in use, with the result that the pulverulen or granular goods may, when poured out, escape beside th spout.
• Another inconvenience is that it may be difficult to pull out the spout when opening the package for the first time, owing to the design of the spout side walls and the adjoining material in the additional flap.
• DK-B-92953 discloses a package which has a spout formed in an inner side wall panel and disposed behind a H-shaped weakened area which, when the package is opened, is broken and pressed in, thereby making it possible to reach the spout in the inner side wall panel with the fingers.
• This prior-art package suffers from the drawbac that it is difficult to pull out the spout, so that it is often necessary to use a tool, such as a knife, for open- ing the package. Since the material of the outer side wal panel has to be pressed inwardly to give access to the spout, the function of the spout is impaired and the aesthetical appearance suffers.
• AU-B-70420/87 also discloses a package in which a spout has been formed.
• the illustrated packages are designed so as to be tight when unopened owing to the spout being then covered by a tear flap in the outer side wall panel, but they are nevertheless untight when reclos ed.
• the bottom of the spout is not double, and the spout therefore becomes weak and easily deformed and thus will function in unsatisfactory manner when used for a long time and repeatedly opened and closed.
• US-A-1,907,939 discloses a blank and a package, in which a spout device is formed in an inner side wall pane and a flap construction, which can be pressed in and torn off, is punched in the outer side wall panel opposite to the spout device.
• this package When unopened, this package is not com ⁇ pletely tight, thereby making it possible to tamper with the contents of the package through narrow openings exist ing at the flap construction and the spout inwardly there of.
• the reclosable package is rather untight, and the spout, whose bottom is made of but one layex of material, is weak.
• One object of the present invention is to obviate or substantially reduce the drawbacks of the prior-art pack- ages and blanks.
• Another object of the present invention is to provid a standard package of cardboard or similar material and a blank therefor, which includes a pouring spout formed without the use of metal material.
• a further object is to produce such a package and a blank in which the spout is formed of two overlapping panels and still is extremely tight in unopened, as well as opened and reclosed, position of the spout.
• the blank is formed of cardboard material or similar sheet material.
• a spout is formed from the cardboard material itself in an at least partially double-walled side wall comprising inner and outer side wall panels glued togeth ⁇ er.
• the spout channel bottom is formed of outer and inner layers which are adhesively bonded or glued together in overlapping relationship in the erected package.
• Substan ⁇ tially triangular spout channel side walls are formed in the inner side wall panel. The channel side walls are delimited from the inner layer of the channel bottom by fold lines or perforated lines and delimited from the remainder of the inner side wall panel by punched lines.
• the inner layer of the channel bottom is delimited from the remain ⁇ der of the inner side wall panel by a punched line.
• the channel side walls are free of adhe ⁇ sive bond to adjoining parts of the outer side wall panel.
• the outer layer of the spout channel bottom is delimited from the remainder of the outer side wall panel by per ⁇ forated lines.
• the outer sid wall panel has a tear flap between the outer end of the outer layer of the channel bottom and an edge of the sid wall panel situated at a distance therefrom. At this edg the tear flap is delimited by a punched line, and the other edges of the tear flap are formed of perforated te lines.
• the end edges of the channel side walls are forme of arcuate punched lines so designed that, when the spou is opened and closed, they come into guiding engagement with short punched lines which, from the outer end of th inner layer of the channel bottom, extend outwards in the inner side wall layer.
• Fig. 1 is a view of an unfolded blank
• Fig. 2 is a perspective view of an unopened package formed from the blank
• Fig. 3 is a perspective view of an opened package formed from the blank
• Fig. 4 shows parts of a blank for another embodiment of the invention.
• the embodiment of a package and a blank according to the invention shown in Figs 1-3 is intended for the pack ⁇ aging of pulverulent or granular material, such as salt and sugar for domestic use.
• the package is made of solid board or single-wall corrugated fibreboard in E-flute design. Also other sheet materials may be used.
• the blank comprises five sid wall panels 10-15 which are interconnected by fold lines 15-18.
• the side wall panels 10 and 14 are intended to be glued or adhesively bonded together in overlapping rela ⁇ tionship when the package is erected.
• the side wall panel 10 is of essentially the same size as the side wall panel 14, even though it mostly resembles an adhesive bonding flap for gluing the panels 10-14 to a sleeve.
• the blank also comprises bottom- and lid-forming panels 19-22 and 23-26, respectively, which are connecte to adjoining panels by fold lines 27 and 28, respectivel
• the panels 19-22 and 23-26 are separated from one anothe by punched lines.
• the punched lines 29 between the different panels terminate just outwardly of the adjoining fold lines 27, 28, in which case the fold lines 15-18 are extended beyo these lines up to where the punched lines 29 start.
• an ad e- sive bonding flap 30 at the bottom end of the side wall panel 10.
• the flap 30 is connected to the side wall pane 10 by the fold line 27, but is separated from the flap 1 by the punched line 29.
• an adhesive bonding flap 31 is provided at the lid end of the side wall pane 10.
• the flap 31 is connected to the side wall panel 10 b the fold line 28 and is separated from the flap 23 by th punched line 29.
• the package according to the invention comprises a pouring spout 40 formed from the cardboard material as such.
• This spout is made from material in the two side wall panels 10 and 14 which are glued or adhesively bonde together in overlapping relationship.
• the spout has a two-layer channel bottom 41 formed of an outer chan nel bottom layer 42 and an inner channel bottom layer 43.
• the outer channel bottom layer 42 is delimited from the remainder of the outer side wall panel by a fold line 44 provided at the inner end of the spout and serving as a hinge.
• the inner channel bottom layer 43 is delimited from the remainder of the inner side wall panel 10 by a fold line 45 provided at the inner end of the spout and serving as a hinge.
• the two fold lines 44, 45 are situated substantially opposite to one another in t erected package.
• the fold lines 44 and 45 a located at a distance from each other corresponding to thickness of the cardboard material, the fold line 44 being closer to the bottom of the package than is the fo line 45, thus taking into consideration the radius of cu vature of the cardboard material during the opening and closure of the spout.
• the side edges of the outer layer 42 of the spout channel bottom are delimited from the remainder of the outer side wall panel 14 by substantially straight perfo rated lines 46 which, at the outer end of the spout, mer into an outwardly-curved arcuate perforated line 47.
• the perforated line 47 will form the edge of the gripping flap for ope ⁇ rating the spout when the package has been opened.
• a tea flap 48 between the outer layer 42 of the spout channel bottom and the adjoining edge (the fold line 28) of the outer side wall panel 14.
• This tear flap is delimited by punched line 49 and two perforated tear lines 50 extendi from the punched line 49 approximately to the ends of th arcuate perforated line 47.
• ther is no adhesive bond between the tear flap 48 and adjoini parts of the side wall panel 10.
• a weak adhesive bond may be present between the tear flap 48 and the side wall panel 10. How- ever, such a weak adhesive bond must not make it more dif ficult to remove the tear flap when opening the package.
• the punched line 49 is situ ⁇ ated slightly outwardly of the fold line 28. Such an arrangement is preferred, since the edge of the tear flap 48 formed by the punched line 49 thus becomes much more accessible when opening the package for the first time. I one so desires, the punched line 49 may be located in the fold line 28 itself.
• the inner layer 43 of the spout channel bottom is laterally delimited by two substantially straight perforated lines 51. These lines may, however, be replaced with fold lines, but this is not equally preferred at present.
• the inner layer 43 is delimited by a punched line 52 which is located at a shorter distance from the fold line 45 than is the arcuate perforated line 47.
• the outer layer 42 will project beyond the perforated lin 52, thus forming a gripping flap for operating the spout and providing a certain sealing effect in the opened pack age when the spout 40 is in its closed position.
• the substantially triangular side walls 53 of the spout are punched in the inner side wall panel 10 by essentially straight punched lines 54 extending from the ends of the fold line 45 and merging, at the outer end, into a punched line forming small hooks 55.
• Arcuate punch ed lines 56 extend between the hooks and the fold lines o perforated lines 51.
• Outwardly of the arcuate punched lines 56 there are provided punched holes 57 which do no have the same length as the punched lines 56 but leave flaps 58.
• the purpose of the punched holes 57 in the inne side wall flap 10 is to make it easier to pull the spout side walls 53 towards one another when the spout is pulle out for the first time when the package is opened.
• the holes 57 leave space for the lateral movement of the hooks 55 during the first stages of the outward pulling procedure, before the spout side walls 53 have been swung a certain angle about the fold lines or perforated lines 51.
• short punched lines 59 are provided outward ⁇ ly of the fold lines or perforated lines 51, approximately at the ends of the punched line 52.
• arcuate punched lines 56 are so designed that the result ⁇ ing end edges of the spout side walls 53 will, when the spout is moved outwards, engage with the short punched lines 59 and be positively guided by these lines, such that the spout 40 will maintain its -channel shape bette than without this engagement.
• the punched lines 5 considerably reduce the risk of the spout side walls be turned downwards-inwards towards the spout channel bott In Fig.
• the dotted portions are the adhesive are 60, 61, 62 and 63 where the inner side wall panel 10 is glued to the outer side wall panel 14. It appears from t design of the adhesive areas that no gluing takes place between the tear flap 48 and the corresponding portions the inner side wall panel 10. It is further evident that the adhesive area 63 joins the inner and outer layers 42 and 43, respectively, of the spout bottom 41 to one another. Also, essentially the entire adhesive bonding flap 31 is glued to the inside of the lid flap 26.
• a weak glue may optionally be used in this area, but thi glue then must not be so strong that it prevents, or und ly obstructs, the removal of the tear flap 48, thereby making it too difficult for the user to open the package for the first time.
• Fig. 4 illustrates another embodiment of the inven ⁇ tion.
• the same reference numbers as in Fig. 1 serve to designate equivalent parts.
• only those parts of the blank that differ from the blank in Fig. 1 are shown.
• the spout outer layer formed by the outer side wall panel is designed as in Fig. 1 (the flap 14).
• the holes 57' are slightly different, but still leave space for the movements of the hooks 55 when the spout is pulled out when the package is opened for th first time.
• holes 67 are here punched in the inner side wall panel 10 also at the sides of the side walls 53 of the spout. However, this is by no means com ⁇ pulsory.
• Fig. 4 also illustrates how the spout function may b further improved by pre-folding the inner side wall panel 10. It may thus be advantageous for some types of package materials to pre-fold the spout, before gluing the blank to a sleeve, along the fold lines 51 between the spout bottom 43 and the spout side walls 53, and then flatten the blank when glued. This considerably facilitates pull- ing out the spout.
• the entire inner side wall panel 10 is preferably provided with fold lines 66 in the extension of the lines 51. If these are !2 inclined relative to one another, the fold lines 66 may in the form of two lines laterally offset in relation to one another and provided above and below the fold lines 51.
• the adhesive areas 61 and 62 can be broader or be designed as a singl broad area covering the entire side wall panel 10.
• the adhesive area 63 extends over the inner layer 43 of the channel bottom as well as the out ⁇ ward parts of the side wall panel 10.
• the adhe ⁇ sive area 63 may be shortened, so as to cover only the inner layer 43.
• adhesive can be applied to the inside of the outer side wall panel 14, should this b advantageous in view of the equipment used for erecting the package..Further, the side wall panel 10 may be shorter and extend to approximately half the height of th blank.
• part of the side wall panel 10 closest to the fold line 15 has to be left in the form of an adhesiv bonding flap of roughly the same width as the flap 30.
• the cardboard material or similar material i better utilised if successive blanks are swung half a tur in relation to one another.
• the spout 40 takes up most of the width of the inner side wall panel 10.
• the spout is so designed that there is room for the adhe ⁇ sive areas 61, 62 on both sides of the spout areas 43, 53, i.e. between the spout side walls 53 and the adjoining edges of the inner side wall panel 10.
• the spout 40 tapers from the inner end (the fold lines 44, 45) to the outer end (the punched line 52 and the perforated line 47).
• the spout side walls are inclined towards one another.
• the spout may also have the same width from the inner end to the outer end or be broader at the outer end than at the inner end. In the latter case, the side walls 53 will diverge from one another.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cartons (AREA)
• Packages (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20381522

Family Applications (1)

Country Status (11)

Cited By (2)

Families Citing this family (9)

Citations (5)

Family Cites Families (20)

• 1991
  • 1991-12-30 SE SE9100007A patent/SE9100007L/sv not_active Application Discontinuation
• 1992
  • 1992-12-28 AU AU32711/93A patent/AU3271193A/en not_active Abandoned
  • 1992-12-28 EP EP93901425A patent/EP0618870B1/en not_active Expired - Lifetime
  • 1992-12-28 JP JP5511599A patent/JPH07502714A/ja active Pending
  • 1992-12-28 CA CA002126988A patent/CA2126988A1/en not_active Abandoned
  • 1992-12-28 WO PCT/SE1992/000895 patent/WO1993012976A1/en active IP Right Grant
  • 1992-12-28 US US07/997,178 patent/US5316212A/en not_active Expired - Fee Related
  • 1992-12-28 AT AT93901425T patent/ATE137186T1/de active
  • 1992-12-28 DE DE69210260T patent/DE69210260T2/de not_active Expired - Fee Related
• 1994
  • 1994-06-24 NO NO942405A patent/NO942405L/no unknown
  • 1994-06-29 FI FI943114A patent/FI943114A/sv not_active Application Discontinuation

Patent Citations (5)

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