EP0103593A1 - Device for closing a bag open at one side, particularly a bag of a plastic material. - Google Patents
Device for closing a bag open at one side, particularly a bag of a plastic material.Info
- Publication number
- EP0103593A1 EP0103593A1 EP19830900828 EP83900828A EP0103593A1 EP 0103593 A1 EP0103593 A1 EP 0103593A1 EP 19830900828 EP19830900828 EP 19830900828 EP 83900828 A EP83900828 A EP 83900828A EP 0103593 A1 EP0103593 A1 EP 0103593A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking ring
- opening
- seat
- ring
- bag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
- B65B51/04—Applying separate sealing or securing members, e.g. clips
- B65B51/043—Applying springy clips around bag necks
Definitions
- the present invention relates to a device for closing a sack open at one end, in particular made of plastic film. It is a device with a locking ring, which is designed and set up to encompass the end portion of the sack that has been gathered into a bag to close the sack, and with a hand tool for holding the locking ring while the sack is being closed.
- Sealing plastic garbage bags is mandatory in some countries that no longer have open garbage transport. But also on other occasions, a sack made of plastic film must either be tied with a cord or another binding tape or be closed in some other way. In all cases, it may be necessary to with garbage. or other good, more or less filled foil sack in the area of the sack edge so that the top edge of the sack protrudes as evenly as possible in length in the bulge. Depending on the filling of the sack, this is more or less easy to do. If the filling is relatively large, it may be necessary or sensible to additionally twist the bag so that the material in the sack is compressed somewhat and the bag becomes somewhat longer. The bulb then has an approximately finger-strong round shape.
- the invention is therefore based on the object of designing a device of the type mentioned at the outset such that a simple and inexpensive locking ring is quickly and easily placed around the end portion of the sack to be closed, which has been gathered and optionally twisted that holds the bag together well enough so that tying it with a string or an adhesive tape is completely unnecessary.
- the device according to the invention which is as handy as it is simple, consists of only two parts, namely the locking ring and the hand tool used to hold the same while the bag is being closed.
- a fresh locking ring is required for each sack, whereas the hand tool can be used again and again.
- the locking ring is first arranged on the seat provided for this purpose in the opening in the body of the hand tool such that the axial end of the locking ring having the sharp inner peripheral edge rests on the shoulder of the seat.
- the end portion of the sack to be closed which is gathered together into a lump, is then pushed through from the opening in the funnel shape of the opening of the body through the opening and the locking ring, the locking ring being secured by the shoulder of the seat from sliding out of the body of the tool.
- the locking ring If in the way described the locking ring has been pushed sufficiently far over the bulge of the sack, the tool is finally moved back in the opposite direction, the locking ring automatically detaching itself from the seat of the tool body and remaining at the reversal point of the movement.
- the sharp inner peripheral edge of the locking ring ensures that the locking ring is firmly seated on the bulging of the sack.
- FIG. 1 is a cross-sectional illustration of a first embodiment of the. device according to the invention.
- Fig. 2 shows on a smaller scale one of Fig. 1 analog
- FIG. 3 shows a second exemplary embodiment of the device according to the invention, likewise in cross section
- FIG. 4 is a view of the device according to FIG. 3 seen in the direction of arrow IV;
- the device shown in FIGS. 1 and 2 essentially consists of a body 1 serving as a hand tool and a locking ring 2 detachably inserted therein.
- the tool body 1 can be used again and again, whereas the end ring 2 remains in each case on the gathered and, if necessary, also twisted ball 3 of the end part of a closed sack 4, as can be seen from FIG. 2, for example.
- the tool body 1 is an annular disk with a rotational symmetry axis 5 and an opening 6. Approximately in the middle of the opening there is a receiving space or seat 7 for receiving the locking ring 2.
- the seat 7 has a radially inwardly projecting shoulder 8, which ⁇ che forms a stop for the locking ring 2, such that the latter in the axial direction, ie cannot slide out of the opening 6 in the direction of the axis of symmetry 5, in FIG. 1 upwards.
- the locking ring 2 which is also designed to be rotationally symmetrical with respect to the axis 5, can, however, be brought into the position shown on the seat 7 from below in FIG. 1 according to the arrow 9.
- the seat 7 and the locking ring 2 are matched to one another in such a way that the locking ring inserted into the tool body 1 is held in position by friction.
- the locking ring 2 can therefore not fall out of the tool body 1 under the influence of gravity.
- the friction holding the locking ring 2 is relatively low, so that a force which only slightly exceeds the weight of the locking ring 2 is of the order of magnitude e.g. 3 to 10 times the weight of the locking ring is sufficient to detach the locking ring from the seat 7.
- both the tool body 1 and the locking ring 2 have special cross-sectional shapes.
- the inner peripheral surface 10 of the locking ring 2 is widened like a funnel from the upper axial end of the locking ring in FIG. 1 to the lower axial end.
- the smallest inner diameter of the locking ring 2 is thus present on the axial end of the locking ring 2 lying against the shoulder 8, and at the location of the smallest inner diameter of the locking ring 2 there is a sharp inner circumferential edge 11 formed by surface areas of the locking ring meeting there at an acute angle.
- two parts 6a and 6b can be distinguished, which are located on one or the other side of the seat 7 for the locking ring 2.
- the lower part 6a of the opening 6 in FIG. 1, through which the locking ring 2 can be inserted and removed in the tool body 1, has an uninterrupted circumferential surface 12 that extends from the seat
- the device described allows a bag, e.g. made of plastic film, to close as follows:
- the locking ring 2 is placed on the seat 7 in the opening 6 of the tool body 1, as shown in FIG. 1. Then the end part of the sack adjoining the opening of the sack 4 (FIG. 2) to be closed is gathered together to form a pad 3, which can still be compressed by twisting. The device described is then pushed from above according to arrow 14 in FIG. 2 with the axis of rotational symmetry 5 coaxial to the longitudinal axis 15 of the lug 3 over the latter. The free end of the cone 3 is effortlessly guided into the opening of the locking ring by means of the funnel-shaped peripheral surface 12 of the part 6a of the opening 6 and by means of the likewise funnel-shaped inner peripheral surface 10 of the locking ring 2. If desired, you can use the one above
- OMF Part 6b of the passage 6 of the end portion of the lug 3 can be grasped and held with one hand, while the other hand moves the tool body 1 further down, the locking ring 2 by means of the shoulder 8 of the body 1 is taken. As soon as the locking ring 2 has been pushed sufficiently far over the bulge 3, the direction of movement of the tool body 1 is reversed. While the tool body is being moved upwards according to the arrow 16 in FIG. 2, the locking ring 2 is held on the bulge 3 by its sharp inner peripheral edge 11.
- a locking ring 2 is again placed on the seat 7 in the tool body 1 according to the arrow 9 in FIG. 1, after which the closing process according to FIG. 3 is repeated.
- the cross-sectional dimensions of the locking ring 2 can be relatively small.
- the outer diameter of the locking ring is expediently at most twice its smallest inner diameter at the point of the sharp inner peripheral edge 11, and the axial dimension of the locking ring in the direction of its rotation.
- the axis of symmetry 5 measured is preferably smaller than the smallest inside diameter of the locking ring. Comparatively little material is required for each locking ring, which has a favorable effect in terms of space and the cost price.
- the locking ring 2 is advantageously produced as an injection molded part made of polymer plastic.
- the tool body 1 also gives the locking ring 2 located in the seat 7 a greatly increased stability during the closing of a sack, so that there is neither a risk of bending nor of an expansion of the locking ring when being pushed onto the bag 3.
- the tool body 1 can be provided with a radially protruding handle which enables the device to be handled. relieved. If necessary, the handle can be designed as a storage container for a larger number of locking rings 2.
- the tool body 1 is provided with a radially projecting handle * 17, which serves to facilitate the handling of the device.
- the locking ring 2 has, at its axial end to be placed against the shoulder 8, a circumferential groove 18 which is located at a short distance from the sharp inner peripheral edge 11 of the locking ring 2. This achieves a certain radial flexibility of the part having the sharp peripheral edge 11, which leads to an even firmer fit of the locking ring on the bulging of the bag to be closed and the locking ring even better against sliding in the direction of the arrow 16 in FIG. 2 secures. Furthermore, the locking ring 2 of the device according to FIGS.
- 3 and 4 has, on its outer circumferential surface 19, a plurality of projections 20 distributed over the circumference, by means of which the locking ring is mounted in the seat 7 of the tool body 1 under frictional engagement.
- This design is simpler to manufacture insofar as the manufacturing tolerances to be observed with regard to the diameter of the outer circumferential surface 19 of the locking ring 2 can be chosen to be comparatively larger.
- the projections 20, which can also be of slightly conical design, so that the locking ring 2 can be pressed into the seat 7 in the manner of a conical plug, and nevertheless there is only a relatively low static friction which occurs during the withdrawal movement of the tool body (according to arrow 16 in Fig. 2) is easily overcome.
- the embodiment according to FIG. 5 has a locking ring 2, which is designed as a metal molded part, which e.g. has been formed by stamping and pressing or stamping from sheet metal.
- the locking ring 2 has a cylindrical outer portion 2a, which is intended for frictional engagement with the inner surface of the seat 7 in the tool body 1.
- the locking ring has a funnel-shaped inner part 2b, which forms both the funnel-shaped inner surface 10 and the sharp inner peripheral edge 11 of the locking ring.
- This locking ring 2 can also be produced easily and inexpensively with a low material requirement.
- the design of the tool body 1 and the handling of the entire device are basically the same as in the first embodiment.
- the further exemplary embodiment of the device according to the invention shown in FIG. 6 differs from the first example according to FIG. 1 in that a snap lock is present between the tool body 1 and the locking ring 2 for holding the locking ring in the tool body is.
- On the shoulder 8 of the opening 6 of the tool body 1 there is a rib 21 running annularly around the axis of rotational symmetry 5, while the locking ring 2 has a corresponding annular groove 22, into which the rib 21 should snap in order to hold the locking ring 2 in place.
- the uninterrupted rib 21 there can also be individual, for example pin-like projections, which can snap into the groove 22. It can be seen from FIG.
- the outer diameter of the locking ring 2 in this example is smaller than the diameter of the inner surface of the seat 7, so that the locking ring 2 is held exclusively by the engagement of the rib 21 in the groove 22.
- the design of the rib 21 and the groove 22 is selected in such a way that the locking ring 2 pushed over the bulge 3 of a sack 4 (FIG. 2) easily detaches from the seat 7 and from the tool body 1 , if the movement of the tool body 1 is reversed according to the arrows 14 and 16 (FIG. 2), so that the locking ring remains on the swab 3 at the point of movement reversal.
- the locking ring 2 is designed as a bent wire part.
- the wire expediently has a cross-sectional shape that deviates from the circular shape, so that in this case too there is a sharp inner peripheral edge 11 on the locking ring.
- the ring can be bent from a correspondingly profiled wire or initially formed from round wire and then subjected to a pressing or crimping process in order to achieve the desired cross-sectional shape of the locking ring 2.
- 7 has the special feature that the inner surface of the seat 7 for the locking ring 2 is designed as a conical surface 23 which at the same time forms the funnel-shaped inner surface of the part 6a of the opening 6 in the tool body 1.
- the locking ring 2 is rubbed against the conical surface 23 held and does not need to rest on the shoulder 8 of the opening 6 in every case.
- FIG. 1 A further exemplary embodiment of the device is shown in FIG.
- the difference from the example according to FIG. 1 lies mainly in the fact that the locking ring 2 has an outer peripheral surface portion 24 which is tapered adjacent to the axial end of the locking ring which has the sharp inner peripheral edge 11 towards said end.
- This configuration means that the locking ring 2 can be inserted into the tool body 1 more easily and more quickly, since the locking ring can now in no way jam in the seat 7 in an oblique position.
- the cross-sectional shape of the seat 7 of the tapered part 24 is expediently adapted to the outer circumferential surface of the locking ring 2, as can be seen in FIG. 8.
- the funnel-shaped inner circumferential surface 10 of the locking ring 2 and the likewise funnel-shaped circumferential surface 12 of the part 6a of the opening 6 in the tool body 1 are designed in such a way that the transition between the two mentioned circumferential surfaces 10 and 12 is as smooth as possible when the Locking ring 2 is located in the seat 7 of the opening 6.
- This design gives the advantage that the free end of the bag 3 (FIG. 2) can be pushed into the opening of the closure ring 2 in any case even more effortlessly and immediately when the bag 4 is closed.
- FIG. 9 shows an embodiment variant of the example according to FIG. 8.
- the locking ring 2 has a peripheral edge 25 projecting outwardly like a flange at its axial end facing away from the sharp inner peripheral edge 11, and the tool body 1 is included a recess 26 receiving this peripheral edge 25, which concentrically surrounds the seat 7 for the locking ring 2.
- the funnel-shaped inner peripheral surface 10 of the locking ring 2 settles steadily, i.e. without step or noticeable
- OMPI change direction until the outermost edge of the peripheral edge 25.
- the likewise funnel-shaped circumferential surface 12 of part 6a of the opening 6 in the tool body 1 is designed such that the narrowest part of the circumferential surface 12 adjoins the largest diameter part of the inner surface 10 of the locking ring inserted into the tool body 1 2 connects practically without step and without change of direction, as can be seen clearly in FIG. 9.
- This configuration of the device makes it even easier to insert the free end of the bag 3 of a bag 4 to be closed (FIG. 2).
- FIG. 10 shows a locking ring 2, which is shaped similar to that according to FIG. 8, but additionally has on its outer circumferential surface 19 a plurality of small circumferential ribs 27 or small bosses which are intended to be attached to the cylindrical surface part of the seat 7 of the tool body 1 in order to hold the locking ring in its position of use in the tool body by friction.
- This configuration essentially gives the same advantages as the projections 20 of the exemplary embodiment according to FIGS. 3 and 4.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Apparatuses For Manual Packaging Operations (AREA)
- Bag Frames (AREA)
- Sheet Holders (AREA)
Abstract
Pour fermer un sac (4) on utilise un anneau de fermeture (2) qui est engagé à l'aide d'un outil à main (1) autour de la partie d'extrémité du sac resserrée en forme de tampon (3). L'outil à main est constitué essentiellement d'un corps (1) comportant une ouverture (6) présentant un siège (7) pour l'anneau de fermeture (2). Le siège (7) présente un épaulement (8) dirigé vers l'intérieur formant appui pour une face de l'anneau de fermeture (2). Celui-ci comporte une arête périphérique interne aiguee qui est située axialement du même côté que l'épaulement (8). Le plus petit diamètre intérieur de l'anneau de fermeture (2) à l'endroit de l'arête (11) est plus petit que le plus petit diamètre de l'ouverture (6) à l'endroit de l'épaulement (8). Pour fermer le sac (4) le corps de l'outil (1) muni de l'anneau de fermeture (2) est engagé sur la partie en forme de tampon (3) selon la flèche (14). Lors du mouvement inverse du corps de l'outil l'anneau de fermeture (2) reste accroché à la partie resserrée (3), tandis que le corps (1) de l'outil est retiré selon la flèche (16) de l'anneau de fermeture et de l'extrémité du sac en forme de tampon (3).To close a bag (4), a closing ring (2) is used which is engaged using a hand tool (1) around the end part of the bag tightened in the form of a tampon (3). The hand tool essentially consists of a body (1) having an opening (6) having a seat (7) for the closure ring (2). The seat (7) has a shoulder (8) directed inwardly forming a support for one face of the closure ring (2). This has a sharp internal peripheral edge which is located axially on the same side as the shoulder (8). The smallest inside diameter of the closure ring (2) at the location of the edge (11) is smaller than the smallest diameter of the opening (6) at the location of the shoulder (8 ). To close the bag (4), the tool body (1) provided with the closing ring (2) is engaged on the part in the form of a buffer (3) according to the arrow (14). During the reverse movement of the tool body the closing ring (2) remains attached to the constricted part (3), while the body (1) of the tool is withdrawn according to the arrow (16) of the closure ring and the end of the tampon-shaped bag (3).
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83900828T ATE17838T1 (en) | 1982-03-15 | 1983-03-14 | DEVICE FOR CLOSING A BAG OPEN AT ONE END, ESPECIALLY MADE OF PLASTIC FILM. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3209336 | 1982-03-15 | ||
DE19823209336 DE3209336C2 (en) | 1982-03-15 | 1982-03-15 | Hand tool for attaching a locking ring to the wad of a sack or pouch |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0103593A1 true EP0103593A1 (en) | 1984-03-28 |
EP0103593B1 EP0103593B1 (en) | 1986-02-05 |
Family
ID=6158268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19830900828 Expired EP0103593B1 (en) | 1982-03-15 | 1983-03-14 | Device for closing a bag open at one side, particularly a bag of a plastic material |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0103593B1 (en) |
DE (1) | DE3209336C2 (en) |
WO (1) | WO1983003236A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2264922A (en) * | 1992-01-22 | 1993-09-15 | Peter Ervin Kraus | Bag sealing device |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1277743A (en) * | 1961-01-16 | 1961-12-01 | Obturator intended for closing bags or other flexible-sided capacities | |
DE1882428U (en) * | 1963-07-04 | 1963-11-07 | Technopack Ewald Hagedorn K G | DEVICE FOR CLOSING BAGS, BAGS OR. DGL. |
NL6617069A (en) * | 1965-12-08 | 1967-06-09 | ||
CH542762A (en) * | 1971-07-16 | 1973-10-15 | Achermann W | Closure for garbage bags |
-
1982
- 1982-03-15 DE DE19823209336 patent/DE3209336C2/en not_active Expired
-
1983
- 1983-03-14 WO PCT/CH1983/000030 patent/WO1983003236A1/en active IP Right Grant
- 1983-03-14 EP EP19830900828 patent/EP0103593B1/en not_active Expired
Non-Patent Citations (1)
Title |
---|
See references of WO8303236A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1983003236A1 (en) | 1983-09-29 |
EP0103593B1 (en) | 1986-02-05 |
DE3209336C2 (en) | 1984-06-28 |
DE3209336A1 (en) | 1983-09-22 |
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Legal Events
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Inventor name: ACHERMANN, WERNER |
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