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
  • B65D5/746—Spouts formed separately from the container
  • B65D5/747—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall
  • B65D5/749—Spouts formed separately from the container with means for piercing or cutting the container wall or a membrane connected to said wall a major part of the container wall or membrane being removed from the container after the opening

Definitions

• the invention relates to a device for opening a package, on the upper wall of which devices are provided for opening and reclosing.
• a hole arranged in the top floor is closed by a two-part opening device which is designed so flat that no parts protrude beyond the overall contour of the top wall.
• This is a prefabricated opening device held on a magazine, which consists of a lower and an upper part, which are connected to each other via a hinge-like folding line.
• a thin plastic film is placed between the two and fixed on the lower part, which ensures tightness.
• This known opening device requires a hole with a raised collar in the wall of the pack in order to have anchoring options. In the case of aseptic packaging, the perforated area would have to be covered particularly.
• an opening device made of plastic, which is sealed onto a paper liquid pack provided with corresponding perforation lines.
• This opening device consists of a first outer part with a casting auxiliary edge and a second inner part which is arranged separately and at a distance from it and is movable relative to the outer part, both of which are injection molded from plastic and are held in stock.
• the design of the opening device parts is somewhat complex, and both parts are connected to one another by cast threads, one of which protrudes as a loop for opening. The user presses the inner part to open it for the first time, whereby it rotates about a pivot point and tears the paper underneath along perforation lines while rotating the inner part about a horizontal axis.
• the object of the invention is to provide a package with a device with the features of the type mentioned in such a way that with simple manufacture and user-friendly handling when opening the absolute tightness of the package is guaranteed until the first opening and, if necessary, aseptic conditions of the interior of the package until opening can be maintained better.
• this object is achieved in that a disc made of plastic is sealed onto the wall, in the middle a recess for receiving a pivot pin and at a distance around this recess has a circular slot extending almost 360 °, which on the side opposite the pouring edge is interrupted by at least one bridge, that a tab is arranged rotatably about the axis of the pivot pin on the disk and that a knife protruding into the slot is attached to the bottom of the tab and is longer than the thickness of the disk.
• the production of such an opening device is simpler, since only two parts, preferably a detachably interconnected part, have to be produced beforehand by injection molding from plastic, the pane and the tab.
• the opening device can be sealed onto a closed upper wall of a package without the package even having to have an opening at a single point. This ensures absolute tightness until the first opening.
• a gas barrier may also be provided on the inner surfaces of the package, e.g. cover with a metal foil so that the aseptic filling conditions of the package can also be guaranteed until the first opening in the case of sterile filling goods. Handling when opening is advantageously logical and simple.
• the washer made of plastic is divided into two parts by the circularly extending slot except for the interruption, which are connected to one another in the region of the interruption, e.g. to form a hinge. Both parts of the disc, namely the inner circular disc part and the outer ring part are sealed on the plastic surface of the package. Except for the bridging, through which the pitch circle of the slot is interrupted, both parts of the disc are located at a radial distance from one another.
• the plastic of the tab has sufficient softness or elasticity so that the tab can be bent with respect to the axis of the pivot pin.
• the knife mentioned is attached, which extends down over the length described. In a rest position in the area of the bridging, the knife is held so that it does not damage the top wall. For example, the knife tip can rest on the plastic of the disc which is not continuously perforated at this point.
• the user wishes the top wall to be opened, he bends the tab upward away from the top wall and rotates it about the axis of the pivot pin until the knife is positioned anywhere above the slot. Here the user releases the tab so that the knife moves into the slot. If necessary, if the knife has not yet pierced the top wall, the user presses the tab from above and thus sticks the tip of the knife through the top wall under the slot. This first piercing can also involve the contact of a cutting blade of the knife with the top wall.
• the knife also has at least one blade, so that the user can now turn the flap about the axis of the pivot pin in one direction or the other so that the top wall in the area under the circular slot except for the aforementioned bridging over an arch of is cut almost 360 °.
• the opening device i.e. the washer according to the invention
• the opening device be attached near an outer edge of the top wall of the pack, so that the pouring edge will be located here. If the user places the tab over this pouring edge while partially turning it back, the knife is in the slot on the side opposite the bridging. If the user then bends the flap, preferably with instructions for use marking the hinge point, the flap can hinge out the part of the wall located under the inner circular disk part in such a way that an opening is completely free towards the pouring edge.
• the flap can hinge out the part of the wall located under the inner circular disk part in such a way that an opening is completely free towards the pouring edge.
• the device according to the invention can also be reclosed. The user then only needs to push the tab down again, so that the inner circular disk part comes to lie in the original position and - except for the narrow, circular slot - closes the top wall again.
• the disk is sealed at least point or line-like, but preferably over the entire surface, on the plastic top wall.
• the outer contour of the disc can be oval, circular, polygonal, eg be square or triangular. It is preferably circular.
• the radius of the outer ring part is preferably 1/3 to 1/4 of the radius of the inner circular disk part larger than the radius of the inner circular disk part.
• the knife can be made of plastic or metal and attached to the underside of the tab.
• Bottom is understood here to mean the direction perpendicular to the wall, a superplasticizer generally being set up in such a way that the pouring device with the opening device described here is attached to the wall "top”, namely the top wall. This is preferably flat, but only needs to be so flat in the area of the opening device that the tab can be rotated along the circular slot to cut it open.
• the knife In order to ensure that the upper wall located under the sealed pane is cut, the knife must certainly cut through the material of the upper wall when the tab is pressed down in the direction of the upper wall. This is achieved if the knife is longer than the thickness of the disc.
• the prefabrication of the plastic disc and the preferably pivotable relative to this attached tab is also easy and simple to produce with injection molding machines if, in a further embodiment of the invention, the central recess for the pivot bolt widens towards the top wall of the pack and preferably by the thickness the disc all the way is designed throughout.
• this recess can have a bag-shaped cross section, the production of the injection mold for the recess as well as for the rotary boating which is adapted to it is even simpler if the recess extends through the entire thickness of the disk.
• the widening of the recess through the disk or the inner circular disk part in the direction of the wall serves to connect the tab to the disk so that it cannot be pulled out easily.
• the tab with attached pivot pin can be snapped into the recess during manufacture, for example, by bending the plastic parts.
• other conventional arrangement methods are also conceivable.
• An alternative embodiment of the invention is characterized in that, using the essential features as described above, an auxiliary pouring edge is additionally attached to the periphery of the pane, with the exception of the pouring edge.
• the pouring aid edge preferably extends vertically out of the pane a little way upwards, for example 1 to 5 mm, preferably 2 to 3 mm.
• the distance between the two ends of the auxiliary casting edge from one another is slightly larger than the width of the tab.
• the top view of the pouring aid edge can run laterally into the pouring edge in a funnel shape.
• the pouring edge, which extends from the two ends of the auxiliary pouring edge at a distance, is then at the front. If the pouring aid edge is the edge, wall or web that extends vertically upwards out of the pane, then its front ends can be used to fix the tab in the position of use, e.g. from the first reclosing.
• the tab is flat and elongated in such a way that its length is 1 to 3 cm, preferably 2 cm, from the axis of the pivot pin, which is preferably connected to it in one piece, to its front end. is greater than the distance between the axis of the pivot pin and the pouring edge. If a tab designed in this way is placed after the first cutting through of the upper floor located under the pane, into the position where the tab lies above the pouring edge then it protrudes slightly over the edge of the pack, but makes it easier for the user to grasp and flip up the flap together with the inner circular disk part - using the hinge in the area of the bridging.
• the rotary boating can preferably be integrally formed with the tab during injection molding. If you prefer a different design for its attachment in the above-described recess widening towards the top wall, you can of course also connect it separately to the flap by means of snap or clamp closures, by latching or other known techniques.
• FIG. 1 is a top view of a cuboid pack made by folding or its flat, rectangular top wall with an opening device on the right-hand side near a pouring edge, the tab of which is in the rest position,
• FIG. 2 shows a cross-sectional view through such a package with the disk sealed onto the upper wall, but in which the tab has been turned to the three o'clock position and the knife is shown reaching through the slot in the disk and the material of the upper wall,
• FIG. 3 is a similar representation as Figure 2, but in which the tab with the
• FIG. 4 shows a plan view of a cuboid-shaped package with an opening device of another embodiment with pouring aid edge located on one side (right).
• the liquid pack has a cuboid shape with side wall 1, front wall 2 and wall 3, which are connected to one another via a front folded edge 4.
• “Front” here means that side of the top wall 3 on which the pouring edge 5 of the opening device is located.
• the opening device consists of a disk 6 and a tab 7 that is rotatably arranged on the disk 6 so that it cannot be lost.
• the disc 6 in turn is made of plastic and is sealed in its entirety on the top wall 3 of the pack.
• the disk 6 is divided into an inner circular disk part 9 and an outer ring part 10 by a slot 8 which extends circularly over approximately 280 °. Both are separated from one another apart from two web-like bridges 11 arranged at a distance a from one another. Between these there is a sack-like depression 12 in the pane, which is open at the top away from the top wall 3, as can be seen particularly clearly in the cross-sectional view in FIG.
• Both the inner circular disk part 9 and the outer ring part 10 are sealed separately from one another flat on the plastic surface of the top wall 3. Before the pack is opened for the first time, the inner circular disk part 9 is thus held in place on the pack via the top wall 3 below and the web-like bridges 11 at the rear.
• a recess 14 is formed in the disk 6, which, as shown in FIGS. 2 and 3 (in cross section), widens towards the upper wall 3 in such a way that a shoulder 15 is obtained.
• the recess 40 extends entirely through the thickness D of the disk 6, 9, 10. In other words, when looking at the disk 6 from below, the viewer would look at a cylinder-shaped hole with a larger diameter from below and from above on the opposite side look at the disk 6 at a smaller cylindrical hole, both of which merge into one another. In the middle of this through hole, i.e. the central recess 14, the axis of rotation 13 is arranged.
• a pivot pin 16 with axis of rotation 13 is integrally formed on the tab 7 in the rear region thereof and has a configuration corresponding to the recess 14. It therefore has a cylinder with a smaller diameter pointing from the underside of the tab 7 towards the top wall 3 and further down, attached to this, a cylindrical part with a somewhat larger diameter, which lies on the shoulder 15 of the recess 14 and thereby is secured against falling out upwards.
• a knife 18 with a pointed lower edge 19 is attached to the underside thereof.
• the knife 18 projects into the slot 8 of the disk 6 downwards in the direction of the upper wall 3 or after being pushed down through it, as in FIG the cross-sectional view of Figure 2 is shown.
• the length I of the knife 18 is greater than the thickness D of the disk 6, as can clearly be seen from FIGS. 2 and 3. It is understood that the distance A of the knife 18 from the axis of rotation 13 on the tab is accordingly equal to the radius of the part-circular slot 8 in the disk 6.
• a pouring auxiliary edge 20 is attached to the periphery of the disc 6, which closes semicircularly towards the rear (towards the center of the top wall 3) and straightly in a funnel shape in a plan view of the disc 6 extends to the ends 21.
• the distance d between the two ends 21 of the auxiliary casting edge 20 is slightly larger than the width B of the tab 7. This allows the tab to be rotated by 180 ° from the position shown in FIG. 4 and fixed in the three o'clock position then reached ( when viewed very closely, the distance d in FIG. 4 is somewhat smaller and more approximated to the width B).
• the length L of the tab 7 from its front end 17 to the axis 13 of the pivot pin 16 can be seen particularly well from FIG. 2.
• This length L is 2 cm greater than the distance D5 of the distance of the pouring edge 5 from the same axis 13 of the pivot pin 16.
• the user grips the tab 7 at the front end 17 in the position of FIG. 1.
• the tab 7 in its nine o'clock position is bent up slightly from the end 17, as a result of which the knife 18 is lifted out of the bag-like recess 12.
• the user rotates the tab 7, for example in the clockwise direction according to the curved arrow 22, the front end 17 of the tab 7 still being held up so that the lower cutting edge 19 of the knife 18 slides over the web-like bridging 11.
• the circular slot 8 begins at the point 23 here.
• the user lets go of the front end 17 of the tab 7, as a result of which the knife 18 with its front blade 19 strikes down through the slot 8 and cuts through the wall.
• the user can support the piercing process by pressing down on the front end 17 of the tab 7 towards the top wall. From point 23, the front blade of the knife 18 now begins to engage the paper of the top wall 3 when the tab 7 continues around the rotation axis 13 in the direction of the curved arrow 22 (clockwise direction) by almost 360 °, e.g. 280 °, is rotated. During this movement, the knife 18 follows the slot 8 and cuts through the top wall on precisely this partial circle. Now the user turns the tab 7 from the eight o'clock position back to the three o'clock position, as shown in cross section in FIG.
• the pouring opening 25 can be seen, through which the flowable filling material can be poured out to the right via the pouring edge 5 in the direction of the arrow 26 in FIG.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Closures For Containers (AREA)
• Cartons (AREA)
• Control And Other Processes For Unpacking Of Materials (AREA)
• Sampling And Sample Adjustment (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6513732

Family Applications (1)

Country Status (6)

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Family Cites Families (22)

• 1994
  • 1994-03-24 DE DE4410205A patent/DE4410205A1/de not_active Withdrawn
• 1995
  • 1995-02-10 EP EP95909699A patent/EP0751897B1/fr not_active Expired - Lifetime
  • 1995-02-10 JP JP7524320A patent/JPH10502317A/ja active Pending
  • 1995-02-10 US US08/663,075 patent/US5755359A/en not_active Expired - Fee Related
  • 1995-02-10 WO PCT/EP1995/000475 patent/WO1995025671A1/fr active IP Right Grant
  • 1995-02-10 DE DE59503931T patent/DE59503931D1/de not_active Expired - Fee Related
  • 1995-02-10 AT AT95909699T patent/ATE172164T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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