WO1988008395A1 - Sealing strip applicator and cartridge - Google Patents

Sealing strip applicator and cartridge Download PDF

Info

Publication number
WO1988008395A1
WO1988008395A1 PCT/NL1988/000018 NL8800018W WO8808395A1 WO 1988008395 A1 WO1988008395 A1 WO 1988008395A1 NL 8800018 W NL8800018 W NL 8800018W WO 8808395 A1 WO8808395 A1 WO 8808395A1
Authority
WO
WIPO (PCT)
Prior art keywords
recess
ribbon
strip
tape
shaped material
Prior art date
Application number
PCT/NL1988/000018
Other languages
French (fr)
Inventor
Nicolaas Van Rosendal
Original Assignee
Nicolaas Van Rosendal
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nicolaas Van Rosendal filed Critical Nicolaas Van Rosendal
Publication of WO1988008395A1 publication Critical patent/WO1988008395A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B67/00Apparatus or devices facilitating manual packaging operations; Sack holders
    • B65B67/02Packaging of articles or materials in containers
    • B65B67/06Manually-operable devices for closing bag necks, by applying and securing lengths of string, wire or tape

Definitions

  • Such an apparatus permits a sealing strip, being made of an adhesive tape and a ribbon-shaped material such as paper tape, to be applied round e.g. a . flexible container such as a plastic bag twisted together.
  • a similar apparatus is known from the Netherlands patent application no. 8500050.
  • the rotor is provided with locking means fitted on the rotor bush and intended to make sure that the rotor is prevented from performing any return rotation.
  • a rubber ring attached to the hub of the reel carrying adhesive tape, there are means, a rubber ring i this case, through which the reel is in frictional contact with the housing and which prevent the reel from running freely and the adhesive tape from being unwound undesirably.
  • the apparatus is used hurriedly in order to apply a large number of sealing strips round bags in a short time, the reel containing adhesive tape will yet revolve too far as a result of the attendant jerks at the adhesive tape, by which the unwound adhesive tape is pulled back to the reel.
  • the apparatus of the type described in the opening lines is provided with locking means located in the recess and, in engagement with the rotor spokes, acting as a ratchet gear.
  • the rotor spoke strikes the locking means, which does not only stop any further reverse rotation of the rotor, but also makes that the tape consisting of ribbon-shaped material and adhesive tape brought together is pinched between the rotor spoke and the locking means, which prevents the ribbon-shaped material and the adhesive tape from reverting to the respective reels on the one hand, and effects an improved bond of the ribbon- shaped material and the adhesive tape on that place on the other, hand.
  • the locking means acting on the rotor and the rubber ring fitted on the hub of the reel may be dropped.
  • a practical embodiment of said locking means is obtained by designing these means as a strip-shaped member of which one half has a partly arc-shaped profile and, contiguously, the other half has a recedingly bent lip-shaped end.
  • a particularly advantageous construction of the described practical embodiment of said locking means is obtained when said strip-shaped member is made of a resilient material and the second half of said member is positioned in the feeding means for the ribbon-shaped material and is pinchingly against the ribbon-shaped material. This provides a solution to overcome the second disadvantage of the known arrangement.
  • Another feature of the invention relates to a cartridge for application in an embodiment of an apparatus according to the invention and being adapted to said cartridge, as the use of removable cartridges is specially attractive in case of renewal of a reel containing ribbon-shaped material.
  • Fig. 2 shows a front view, partly exploded and partly cut- away, of the apparatus represented in Fig. 1;
  • FIGs. 3 and 4 show two different operational conditions of the apparatus depicted in Fig. 2 as they occur during the application of a sealing strip;
  • Fig. 5 shows a section of a removable cartridge for an advantageous embodiment of an apparatus for applying sealing strips;
  • Fig. 6 shows a possible embodiment of a member of the apparatus according to the invention
  • Fig. 7 shows a second example of an embodiment of the apparatus for applying sealing strips.
  • the number 1 denotes a possible embodiment of an apparatus for applying a sealing strip to a bag 2 such as an end of a plastic bag twisted together.
  • a housing 3, viewed on its narrow side, comprises housing halves 4 and 5.
  • the housing is further provided with a recess 6 being roughly located in the middle of the flat part of the housing 3 and constituting the track for the bag 2 to be surrounded by a sealing strip.
  • the recess 6 is preferably designed as a straight slot over its entire length.
  • Fig. 2 shows a front view, partly exploded and partly cut-away, of the apparatus depicted in Fig. 1.
  • the recess 6 made in the shape of a substantially straight slot causes that, as the bag 2 enters the recess 6, said bag 2 is deeply pressed into the space encompassed by two rotor spokes 11, so that the bag 2 is covered with adhesive tape 12 over its full circumference.
  • the rotor spokes are dimensioned such that it is precluded that the bag 2 might be taken downward round the outer ends of spokes 11 and an insufficient amount of adhesive tape might arrive at bag 2.
  • the supply of single-sided adhesive tape 12 is from a reel 13 which is accommodated by a guide 14 located in the box unit 7.
  • a rubber ring 16 may be put on hub 15 of the reel 13, through which ring the reel 13 is in frictional contact with the guide 14, thus preventing adhesive tape 12 from rotating freely and from unwinding undesirably.
  • the .rotor 10 may be ._advantageously provided with retaining means, such as, fitted on the rotor shaft, a retaining clip which does not permit any free rotary motion of the rotor 10. By this it is prevented that for applying a sealing strip an unnecessary amount of adhesive tape 12 is pulled off from the reel 13.
  • bag 2 with the strip of adhesive tape 12 meets a strip of ribbon-shaped material, such as paper tape 17, which will stick to the arriving adhesive tape so far as said adhesive tape is not stuck to the bag 2.
  • the paper tape 17 is supplied from a second reel 18 accommodated in a magazine belonging to the other box unit 8. Through feeding means 19 having access to the recess 6, the paper tape 17 enters the recess 6.
  • the toggle arm 23 turns in the direction of the sealing-strip. -tape, and this sealing-strip tape will be cut " through by the cutting device 24.
  • the cutting device 25 includes a cutting blade 27 accommodated in a chamber 26.
  • a raised edge 29 of a cover 30 on the chamber 26 provides for finger protection.
  • the cutting blade 27 is out of finger's reach (especially for the sake of children), whereas bag 2 can reach cutting blade 27 for performing the cutting operation.
  • Chamber 26 is accessible through cover 30 fastened to it by means of screws.
  • the cutting means 20, too are accessible through a detachable cover 31.
  • the apparatus 1 is provided with a ledge 32 being perpendicular to the recess 6 and protruding into the recess 6, which ledge causes that in its vicinity the adhesive tape and paper tape are sharply bent so that the bag 2 and the free-moving parts of the adhesive tape 12 on one side and of the paper strip 17 on the other side are properly pressed against each other, whereby the sealing strip, to be formed of adhesive tape and paper strip, will tightly embrace the bag 2.
  • the mainly straight recess 6 is curved sideward.
  • the bag 2 already enclosed by the sealing strip of adhesive tape 16 and paper tape 17 has already passed the ledge.32.
  • Fig. 4 also clearly shows that the materials 12 and 17 bonded together are kept taught when the cutting means 20 are operated. Consequently, actual cutting by means of the cutting blade will take place and the operation of these cutting means 20 will require a lower force, which results in a sharp line of cut. Having cut the sealing strip, the cutting means 20 return by the action of a spring 33 into the condition of rest shown in Fig. 2, where the arm part 22 comes to lie against a stop 34 on the box unit 8.
  • the magazine accommodating the paper reel and the feeding means 19 for the paper tape may be combined to form a cartridge 35 which can be inserted in a cavity 36 in the box unit 8.
  • the upright wall part 36 of the cartridge 35 also forms part of the side wall of the housing half 4, with the cartridge 35 being fixed by means of projections, not shown in the drawing, fitting into notches of corresponding shape in the housing half 4 when inserted.
  • the reel 18 containing the paper tape 17 is rotatably disposed on a hub 39 provided in the cartridge 35.
  • a bracket 40 for the purpose of retaining the paper tape 17 in the cartridge 35.
  • the supply of paper tape 17 to the feeding means 19 takes place through a passage 41 made in the cartridge 35 and provided with fully solid sides preventing any undesired transverse displacement of the paper tape 17.
  • Such an embodiment has the disadvantage that, in the event that the bag 2 is rushed through the recess 6, the reel 13 containing the adhesive tape 12 continues to turn through a certain angle due to jerks occurring then, by which the unwound length of adhesive tape 12 is pulled back to the reel 13.
  • the box unit 8 is provided with means 42 projecting into the recess 6 and co-operating with the rotor spokes 11 to act as a locking mechanism and prevent the rotor 10 from rotating reversely.
  • means 42 projecting into the recess 6 and co-operating with the rotor spokes 11 to act as a locking mechanism and prevent the rotor 10 from rotating reversely.
  • An embodiment of said locking means 42 is achieved by designing these means as a strip-shaped member 43 as shown in Fig.6.
  • the strip-shaped member 43 of resilient material has an arc—shaped profile of a certain length 44 and, contiguously, a recedingly bent lip-shaped end 45.
  • This lip-shaped end is to engage with spokes 11 of rotor 10, and that in such a way that rotor 10 is not impeded in its rotational motion during the feeding of a bag 2 through recess 6, but that it is impeded during any reverse rotation that might occur subsequently.
  • This is achieved by positioning the non-bent portion of the strip-shaped member in passage 41 of the feeding means 19 and by securing the other end 47 of the strip-shaped member 43 in a bifurcated clamping device 48.
  • the non-bent portion 46 of the strip-shaped member 43 being slightly curved will abut the upper wall 49 of the feeding means 19.
  • the ribbon-shaped material 17 will be pinched between the strip-shaped member 43 and the upper wall 49 of the feeding means 19. Only when a rotor spoke 11 presses the lip-shaped end 45 against the ledge 32, the strip-shaped member 43 will come loose from the upper wall 49 for a short duration, permitting the ribbon-shaped material 17 to pass for a short length. This prevents forces developing jerkily from propagating to the ribbon-shaped material 17 wound on reel 18 and from making the material unwind from the reel for a great length.
  • the lip-shaped end 45 may be advantageously provided with a top edge 50 increasing in thickness or curvature in the direction of the rotor spokes 11, by which it is .achieved that the. non—bent portion 46 of the strip—shaped member 43 is removed from the upper wall 49 only for a very short time.
  • the eventual design of the end 45 with top edge 50 is a determining factor of the length of paper tape to be supplied for each sealing strip.
  • the length of the lip-shaped end 45 also has some influence.
  • the lip-shaped end 45 should be profiled such that the opening between rotor spokes occupies the full width of recess 6 on the entrance side.
  • Fig. 3 shows that the lip-shaped end 45 is not being moved by a rotor spoke 11 and, consequently, the strip-shaped member 43 is not yet coming loose from the upper wall 49, so that no ribbon-shaped material is allowed to pass, whereas such is the case in Fig. 4.
  • Pushing the strip-shaped member 43 away from the paper tape should take place through the intermediary of the bag 2 directly or indirectly making use of any pushing means to be moved by the bag. As soon as the bag 2 has passed the ledge 42, the lip-shaped end 45 snaps back and the paper tape 17 is again pressed against the wall 49.
  • the apparatus may also be implemented such that in the box half 8 there is a hub on which a separate reel containing paper tape may be placed and that the passage 41 with the locking means 42 are part of the box half 8.
  • Fig. 2 shows that in the apparatus 1 the ledge 32 is located on the box unit 8, it is fully practicable to dispose this ledge on the cartridge 35 while all characteristics are retained.
  • a highly advantageous embodiment of an apparatus for applying a sealing strip in domestic use is reflected in Fig. 7.
  • a slidable guard 51 is fitted in the wall of the housing half 4 of box unit 7.
  • the reel 13 containing adhesive tape 12 may be put in its proper place and the adhesive tape 12 may be led to the rotor spokes 11.
  • the guard 51 may be fitted again in its proper place.
  • the guard may be pushed onto the housing side wall, in this embodiment preference is given to a guard designed as a sliding cover to be pushed into the opening.
  • the guard 51 also comprises a strip 52 being perpendicular to the sliding cover, which prevents the reel 13 from abandoning the box unit 7.
  • This embodiment is furthermore characterised by the presence of a plurality of cavities having pear-shaped holes 53 in the bottom part of the apparatus 1, which enables the apparatus 1 to be wall-mounted by means of screws.

Abstract

An apparatus for applying a sealing strip, being made of an adhesive tape (12) and a ribbon-shaped material such as paper tape (17), to a flexible container such as a plastic bag (2) twisted together.

Description

Sealing strip applicator and cartridge
The present invention relates to an apparatus for applying sealing strips, which apparatus comprises a housing having a recess in its prof le, where a first part of the housing bounded by the recess is provided with feeding means to feed adhesive tape, there available, from a reel to the recess, and a rotor having spokes protruding into the recess to guide the adhesive tape, with its adhesive side facing outward, to the recess, and where a second part of the housing bounded by the recess is provided with feeding means to feed locally available ribbon-shaped material wound on a reel to the recess, where downstream of the feeding means for the ribbon- shaped material there are means to form sealing-strip tape from the adhesive tape and the ribbon-shaped material as they are guided past said means; and where at the end of said recess cutting means for cutting off a sealing strip formed, from the sealing-strip tape, are available.
Such an apparatus permits a sealing strip, being made of an adhesive tape and a ribbon-shaped material such as paper tape, to be applied round e.g. a.flexible container such as a plastic bag twisted together.
A similar apparatus is known from the Netherlands patent application no. 8500050. In the known arrangement, the rotor is provided with locking means fitted on the rotor bush and intended to make sure that the rotor is prevented from performing any return rotation. Furthermore, attached to the hub of the reel carrying adhesive tape, there are means, a rubber ring i this case, through which the reel is in frictional contact with the housing and which prevent the reel from running freely and the adhesive tape from being unwound undesirably. However, in case the apparatus is used hurriedly in order to apply a large number of sealing strips round bags in a short time, the reel containing adhesive tape will yet revolve too far as a result of the attendant jerks at the adhesive tape, by which the unwound adhesive tape is pulled back to the reel. This also causes that the ribbon-shaped material is pulled along with it across the rotor spokes towards the adhesive tape reel. Consequently, neither the objective, i.e. the application of sealing strips at a high rate, nor an economical use of the ribbon-shaped material is achieved, which is to be regarded as a f rst disadvantage of the known arrangement.
As the ribbon—shaped material stored on the reel will also be subject to such vigorous jerks during such a hasty use of the arrangement, said reel does perform a certain free rotation time and time again.
This results in the ribbon-shaped material being unwound from the reel for a long distance, by which the ribbon-shaped material is not only pulled off, for a certain length, from the adhesive tape reel, but is also piled up before the feeding means at the recess, which may be regarded as a second disadvantage of the known arrangement. When, in addition, the ribbon-shaped material and the adhesive tape are separated due to the bond being loose, this may cause that the ribbon- shaped material is drawn back to its own reel, which may be regarded as a third disadvantage of the known arrangement. It is an object of the present invention to overcome the aforementioned disadvantages. The invention departs from the idea that, even after cutting off a sealing strip, the portions of adhesive tape and ribbon-shaped material brought together remain in position while retaining the adhesive bond. According to the invention, the apparatus of the type described in the opening lines is provided with locking means located in the recess and, in engagement with the rotor spokes, acting as a ratchet gear.
When the rotor tends to turn reversely, the rotor spoke strikes the locking means, which does not only stop any further reverse rotation of the rotor, but also makes that the tape consisting of ribbon-shaped material and adhesive tape brought together is pinched between the rotor spoke and the locking means, which prevents the ribbon-shaped material and the adhesive tape from reverting to the respective reels on the one hand, and effects an improved bond of the ribbon- shaped material and the adhesive tape on that place on the other, hand..
As a further advantage of such an embodiment of the invention may be regarded that the locking means acting on the rotor and the rubber ring fitted on the hub of the reel may be dropped. A practical embodiment of said locking means is obtained by designing these means as a strip-shaped member of which one half has a partly arc-shaped profile and, contiguously, the other half has a recedingly bent lip-shaped end. A particularly advantageous construction of the described practical embodiment of said locking means is obtained when said strip-shaped member is made of a resilient material and the second half of said member is positioned in the feeding means for the ribbon-shaped material and is pinchingly against the ribbon-shaped material. This provides a solution to overcome the second disadvantage of the known arrangement. For, only if a rotor spoke touches the lip-shaped end of the strip-shaped member, during the application of a sealing strip round a bag, and the rotor spoke pushes this end aside for a while, the other half of said strip-shaped member comes off from the ribbon-shaped material which is then transported over a short distance in the direction of the recess. Since, for the rest, the strip-shaped member is always pressing against the ribbon-shaped material, it is thus prevented that a jerk of the bag given at, among other things, the ribbon-shaped material causes that the ribbon-shaped material is unwound from the reel over a great length. Another feature of the invention relates to a cartridge for application in an embodiment of an apparatus according to the invention and being adapted to said cartridge, as the use of removable cartridges is specially attractive in case of renewal of a reel containing ribbon-shaped material. The invention will be further elucidated with reference to the accompanying drawings, of which
Fig. 1 is a perspective view of a first embodiment of the sealing strip applicator;
Fig. 2 shows a front view, partly exploded and partly cut- away, of the apparatus represented in Fig. 1;
Figs. 3 and 4 show two different operational conditions of the apparatus depicted in Fig. 2 as they occur during the application of a sealing strip; Fig. 5 shows a section of a removable cartridge for an advantageous embodiment of an apparatus for applying sealing strips;
Fig. 6 shows a possible embodiment of a member of the apparatus according to the invention; and Fig. 7 shows a second example of an embodiment of the apparatus for applying sealing strips.
In Fig. 1, the number 1 denotes a possible embodiment of an apparatus for applying a sealing strip to a bag 2 such as an end of a plastic bag twisted together. A housing 3, viewed on its narrow side, comprises housing halves 4 and 5. The housing is further provided with a recess 6 being roughly located in the middle of the flat part of the housing 3 and constituting the track for the bag 2 to be surrounded by a sealing strip. The recess 6 is preferably designed as a straight slot over its entire length. An advantage of a recess 6 made in the shape of a-.straight slot is that the bag 2 passes more easily through it.
The recess 6 makes the housing 3 roughly fall into two box units 7 and 8. The method by which the sealing strip is fitted round the bag 2 will be explained with reference to Fig. 2, where Fig. 2 shows a front view, partly exploded and partly cut-away, of the apparatus depicted in Fig. 1. When the bag 2 is fed through the recess 6 in the direction of closed end 9, it first passes rotor 10 which is fitted beside the recess 6 in the box unit 7 and which is equipped with radial spokes 11 protruding far into recess 6. From the box unit 7, through these spokes 11, the single-sided adhesive tape 12 is advanced and is bonded to a large part of the circumferential area of the bag as it proceeds. The recess 6 made in the shape of a substantially straight slot causes that, as the bag 2 enters the recess 6, said bag 2 is deeply pressed into the space encompassed by two rotor spokes 11, so that the bag 2 is covered with adhesive tape 12 over its full circumference. The rotor spokes are dimensioned such that it is precluded that the bag 2 might be taken downward round the outer ends of spokes 11 and an insufficient amount of adhesive tape might arrive at bag 2. The supply of single-sided adhesive tape 12 is from a reel 13 which is accommodated by a guide 14 located in the box unit 7. A rubber ring 16 may be put on hub 15 of the reel 13, through which ring the reel 13 is in frictional contact with the guide 14, thus preventing adhesive tape 12 from rotating freely and from unwinding undesirably. Moreover, the .rotor 10 may be ._advantageously provided with retaining means, such as, fitted on the rotor shaft, a retaining clip which does not permit any free rotary motion of the rotor 10. By this it is prevented that for applying a sealing strip an unnecessary amount of adhesive tape 12 is pulled off from the reel 13. When the bag 2 is further pressed into the recess 6, downstream of the rotor, bag 2 with the strip of adhesive tape 12 meets a strip of ribbon-shaped material, such as paper tape 17, which will stick to the arriving adhesive tape so far as said adhesive tape is not stuck to the bag 2. The paper tape 17 is supplied from a second reel 18 accommodated in a magazine belonging to the other box unit 8. Through feeding means 19 having access to the recess 6, the paper tape 17 enters the recess 6. When the bag 2 with the adhesive and paper tapes 12 and 17 respectively is fed further in the direction of the closed end 9, it passes cutting means 20 attached to the housing 3 and operating in the recess 6, which cutting means cut through both the adhesive tape 12 and the paper tape 17 bonded to it, completing the application of a sealing strip round bag 2. In the present embodiment said cutting means comprise a member, designed as a toggle lever 21, which member is pivot-mounted and is included in the interior of box unit 7 in such a way that one toggle arm 22 is in a position in the path of the bag 2 during the condition of rest of said member. The other toggle arm 23 is provided with a cutting device 24.
As the bag 2 pushes down the toggle arm 22 disposed in the track, the toggle arm 23 turns in the direction of the sealing-strip. -tape, and this sealing-strip tape will be cut "through by the cutting device 24.
Finally, at the closed end 9 of the recess 6 there is a cutting device 25 by which a part of the bag 2 extending beyond the sealing strip may be cut off. The cutting device 25 includes a cutting blade 27 accommodated in a chamber 26. A raised edge 29 of a cover 30 on the chamber 26 provides for finger protection. The cutting blade 27 is out of finger's reach (especially for the sake of children), whereas bag 2 can reach cutting blade 27 for performing the cutting operation. Chamber 26 is accessible through cover 30 fastened to it by means of screws. For maintenance or replacement, the cutting means 20, too, are accessible through a detachable cover 31. A more detailed description of the apparatus 1 and its advantages over the known apparatus will now be given with reference to the Figs. 2 , 3 and 4. These figures show that the apparatus 1 is provided with a ledge 32 being perpendicular to the recess 6 and protruding into the recess 6, which ledge causes that in its vicinity the adhesive tape and paper tape are sharply bent so that the bag 2 and the free-moving parts of the adhesive tape 12 on one side and of the paper strip 17 on the other side are properly pressed against each other, whereby the sealing strip, to be formed of adhesive tape and paper strip, will tightly embrace the bag 2. At this ledge 31, the mainly straight recess 6 is curved sideward. In Fig. 3, the bag 2 already enclosed by the sealing strip of adhesive tape 16 and paper tape 17 has already passed the ledge.32.
Fig. 4 also clearly shows that the materials 12 and 17 bonded together are kept taught when the cutting means 20 are operated. Consequently, actual cutting by means of the cutting blade will take place and the operation of these cutting means 20 will require a lower force, which results in a sharp line of cut. Having cut the sealing strip, the cutting means 20 return by the action of a spring 33 into the condition of rest shown in Fig. 2, where the arm part 22 comes to lie against a stop 34 on the box unit 8. As Fig. 5 shows, the magazine accommodating the paper reel and the feeding means 19 for the paper tape may be combined to form a cartridge 35 which can be inserted in a cavity 36 in the box unit 8. By means of a projecting face 38, the upright wall part 36 of the cartridge 35 also forms part of the side wall of the housing half 4, with the cartridge 35 being fixed by means of projections, not shown in the drawing, fitting into notches of corresponding shape in the housing half 4 when inserted.
The reel 18 containing the paper tape 17 is rotatably disposed on a hub 39 provided in the cartridge 35. Mounted on the hub 39 is a bracket 40 for the purpose of retaining the paper tape 17 in the cartridge 35. The supply of paper tape 17 to the feeding means 19 takes place through a passage 41 made in the cartridge 35 and provided with fully solid sides preventing any undesired transverse displacement of the paper tape 17. Such an embodiment has the disadvantage that, in the event that the bag 2 is rushed through the recess 6, the reel 13 containing the adhesive tape 12 continues to turn through a certain angle due to jerks occurring then, by which the unwound length of adhesive tape 12 is pulled back to the reel 13. This also causes that a length of ribbon-shaped material 17, too, is drawn over the rotor spokes 11 to the reel 13. The jerks at the ribbon-shaped material 17 occurring during such a use of the apparatus will also result in a free rotation of the reel 18, by which the ribbon-shaped material 17 will be unwound from the reel 18 over a great length and subsequently be piled up before the feeding means 19. When, in addition, the ribbon-shaped material 17 and the adhesive tape 12 become separated from each other because of their bond being still loose, this will result in the ribbon-shaped material 17 being drawn back to the reel 18. In order to prevent the adhesive tape 12 and the ribbon-shaped material 17 from being drawn back to the respective reels 13 and 18 as described hereinbefore the box unit 8 is provided with means 42 projecting into the recess 6 and co-operating with the rotor spokes 11 to act as a locking mechanism and prevent the rotor 10 from rotating reversely. For, when the rotor starts turning back, a small portion of the ribbon-shaped material 17 and the adhesive tape 12 will be gripped between the means 42 and the rotor spoke 11 locked by said means, by which the objective described is attained. An embodiment of said locking means 42 is achieved by designing these means as a strip-shaped member 43 as shown in Fig.6. The strip-shaped member 43 of resilient material has an arc—shaped profile of a certain length 44 and, contiguously, a recedingly bent lip-shaped end 45. This lip-shaped end is to engage with spokes 11 of rotor 10, and that in such a way that rotor 10 is not impeded in its rotational motion during the feeding of a bag 2 through recess 6, but that it is impeded during any reverse rotation that might occur subsequently. This is achieved by positioning the non-bent portion of the strip-shaped member in passage 41 of the feeding means 19 and by securing the other end 47 of the strip-shaped member 43 in a bifurcated clamping device 48. The non-bent portion 46 of the strip-shaped member 43 being slightly curved will abut the upper wall 49 of the feeding means 19. As the feeding means 19 feed the ribbon-shaped material 17 from the reel 18 via the member 43 to the recess 6, the ribbon-shaped material 17 will be pinched between the strip-shaped member 43 and the upper wall 49 of the feeding means 19. Only when a rotor spoke 11 presses the lip-shaped end 45 against the ledge 32, the strip-shaped member 43 will come loose from the upper wall 49 for a short duration, permitting the ribbon-shaped material 17 to pass for a short length. This prevents forces developing jerkily from propagating to the ribbon-shaped material 17 wound on reel 18 and from making the material unwind from the reel for a great length.
For that purpose, the lip-shaped end 45 may be advantageously provided with a top edge 50 increasing in thickness or curvature in the direction of the rotor spokes 11, by which it is .achieved that the. non—bent portion 46 of the strip—shaped member 43 is removed from the upper wall 49 only for a very short time.
The eventual design of the end 45 with top edge 50 is a determining factor of the length of paper tape to be supplied for each sealing strip. In this connection the length of the lip-shaped end 45 also has some influence. In addition, the lip-shaped end 45 should be profiled such that the opening between rotor spokes occupies the full width of recess 6 on the entrance side.
Fig. 3 shows that the lip-shaped end 45 is not being moved by a rotor spoke 11 and, consequently, the strip-shaped member 43 is not yet coming loose from the upper wall 49, so that no ribbon-shaped material is allowed to pass, whereas such is the case in Fig. 4.
Pushing the strip-shaped member 43 away from the paper tape should take place through the intermediary of the bag 2 directly or indirectly making use of any pushing means to be moved by the bag. As soon as the bag 2 has passed the ledge 42, the lip-shaped end 45 snaps back and the paper tape 17 is again pressed against the wall 49. Instead of using a cartridge 35 with a paper tape 17 and a passage provided with locking means 42, the apparatus may also be implemented such that in the box half 8 there is a hub on which a separate reel containing paper tape may be placed and that the passage 41 with the locking means 42 are part of the box half 8. Although Fig. 2 shows that in the apparatus 1 the ledge 32 is located on the box unit 8, it is fully practicable to dispose this ledge on the cartridge 35 while all characteristics are retained. A highly advantageous embodiment of an apparatus for applying a sealing strip in domestic use is reflected in Fig. 7.
Parts occurring in this embodiment and having in common with parts of the embodiment shown in Fig. 2 that they find like application are labelled with corresponding reference numbers and will not again be discussed hereinafter. With the embodiment of the apparatus 1 depicted in this figure, the reel 13 containing adhesive tape 12 is incorporated in the apparatus 1 in a different way. In the embodiment shown here, a slidable guard 51 is fitted in the wall of the housing half 4 of box unit 7. When the guard 51 is removed, the reel 13 containing adhesive tape 12 may be put in its proper place and the adhesive tape 12 may be led to the rotor spokes 11. Subsequently, the guard 51 may be fitted again in its proper place. Although the guard may be pushed onto the housing side wall, in this embodiment preference is given to a guard designed as a sliding cover to be pushed into the opening.
The guard 51 also comprises a strip 52 being perpendicular to the sliding cover, which prevents the reel 13 from abandoning the box unit 7.
This embodiment is furthermore characterised by the presence of a plurality of cavities having pear-shaped holes 53 in the bottom part of the apparatus 1, which enables the apparatus 1 to be wall-mounted by means of screws.

Claims

1. An apparatus for applying a sealing strip, said apparatus comprising a housing having a recess in its profile, where one housing part is bounded by the recess and provided with feeding means for feeding adhesive tape, there available, from a reel to the recess, and with a rotor having spokes protruding into the recess for guiding the adhesive tape, of which tape the adhesive side is facing the outside, to the recess,and where the other housing part being bounded by the recess and provided with feeding means for feeding ribbon- shaped material, there available, from a reel to the recess, where, downstream of the feeding means related to the ribbon- shaped material, there are means for forming sealing-strip tape as adhesive tape and ribbon-shaped tape pass across them, and where at the end of said recess there are cutting means for cutting off the sealing strip from the sealing-strip tape formed,characterised in that the apparatus is provided with locking means being positioned in the recess, engaging the rotor spokes and functioning as a ratchet mechanism.
2. An apparatus as claimed in claim 1, characterised in that said locking means functioning as a locking mechanism are a strip-shaped member, said member having a half of partly arc— shaped profile and comprising a recedingly lip-shaped end being contiguous to said half.
3. An apparatus as claimed in claim 2, characterised in that said strip-shaped member is made of resilient material and that the second half of said member is located in the feeding means related to the ribbon-shaped material and is pinchingly against the ribbon-shaped material.
4. An apparatus as claimed in any one of the preceding claims, wherein the part of the housing related to the ribbon-shaped material is provided with a detachable cartridge for storing said ribbon-shaped material, which cartridge is provided with said feeding means for feeding the ribbon-shaped material, there available, to the recess, characterised in that said locking means are included in the cartridge.
5. An apparatus as claimed in claim 1, characterised in that the recess is approximately a straight slot.
6. A cartridge for the apparatus according to claim 4.
7. An apparatus for applying a sealing strip, said apparatus comprising a
Figure imgf000017_0001
in. its profile, where the one housing part is bounded by the recess and provided with feeding means for feeding adhesive tape, there available, from a reel to the recess, and with a rotor having spokes protruding into the recess for guiding the adhesive tape, of which tape the adhesive side is facing the outside, to the recess, and where the other housing part being bounded by the recess and provided with feeding means for feeding ribbon-shaped material, there available, from a reel to the recess, where, downstream of the feeding means related to the ribbon-shaped material, there are means for forming sealing- strip tape as adhesive tape and ribbon—shaped tape pass across them,and where at the end of said recess there are cutting means for cutting off the sealing strip formed from the sealing—strip tape, characterised in that the recess is approximately a straight slot.
PCT/NL1988/000018 1987-04-23 1988-04-22 Sealing strip applicator and cartridge WO1988008395A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8700964 1987-04-23
NL8700964A NL8700964A (en) 1987-04-23 1987-04-23 DEVICE FOR APPLYING A CLOSING STRIP AND A CASSETTE THEREFOR.

Publications (1)

Publication Number Publication Date
WO1988008395A1 true WO1988008395A1 (en) 1988-11-03

Family

ID=19849904

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1988/000018 WO1988008395A1 (en) 1987-04-23 1988-04-22 Sealing strip applicator and cartridge

Country Status (2)

Country Link
NL (1) NL8700964A (en)
WO (1) WO1988008395A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295345A (en) * 1990-11-20 1994-03-22 Henkel Nederland B.V. Bag sealer
WO1994013542A1 (en) * 1992-12-07 1994-06-23 Novem Trading International B.V. A device for applying a closing strip
WO2006032174A1 (en) * 2004-09-21 2006-03-30 Yiping Zhang Sealing apparatus for closing the plastic bag
US20170088303A1 (en) * 2015-09-25 2017-03-30 Ben Clements & Sons, Inc. Device for sealing a bag with tamper evident labeling

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729896A (en) * 1971-07-19 1973-05-01 A Lehmann Device for tying the ends of bags
NL7704671A (en) * 1976-06-28 1977-12-30 Leifheit International DEVICE FOR SEALING BAGS AND SUCH FALL PLASTIC WITH A TAPE STRIP.
NL7810993A (en) * 1978-11-03 1980-05-07 Medox B V Plastics sack closing device - has tape guided by rotor with recesses in periphery for sack neck
WO1985001266A1 (en) * 1983-09-13 1985-03-28 International Project Agency B.V. Device for applying a strip closure around an envelope
EP0188843A1 (en) * 1985-01-09 1986-07-30 Novem Trading International B.V. Device for applying a closing strip and a cassette therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729896A (en) * 1971-07-19 1973-05-01 A Lehmann Device for tying the ends of bags
NL7704671A (en) * 1976-06-28 1977-12-30 Leifheit International DEVICE FOR SEALING BAGS AND SUCH FALL PLASTIC WITH A TAPE STRIP.
NL7810993A (en) * 1978-11-03 1980-05-07 Medox B V Plastics sack closing device - has tape guided by rotor with recesses in periphery for sack neck
WO1985001266A1 (en) * 1983-09-13 1985-03-28 International Project Agency B.V. Device for applying a strip closure around an envelope
EP0188843A1 (en) * 1985-01-09 1986-07-30 Novem Trading International B.V. Device for applying a closing strip and a cassette therefor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5295345A (en) * 1990-11-20 1994-03-22 Henkel Nederland B.V. Bag sealer
WO1994013542A1 (en) * 1992-12-07 1994-06-23 Novem Trading International B.V. A device for applying a closing strip
WO2006032174A1 (en) * 2004-09-21 2006-03-30 Yiping Zhang Sealing apparatus for closing the plastic bag
US20170088303A1 (en) * 2015-09-25 2017-03-30 Ben Clements & Sons, Inc. Device for sealing a bag with tamper evident labeling

Also Published As

Publication number Publication date
NL8700964A (en) 1988-11-16

Similar Documents

Publication Publication Date Title
US4307639A (en) Multiple wound roll dispenser for flexible sheet material
US4557617A (en) Tape supply cartridge
USRE36143E (en) Motorized dispenser for continuous strip food product and method of dispensing the product
US20020079345A1 (en) Hand-held tape dispenser with brake mechanism
US6681830B1 (en) Hand-held adhesive tape dispenser
US3971280A (en) Tape dispenser
HU219113B (en) Inhaler for multiple use
JPH0244716B2 (en)
CA2284455A1 (en) Manual stamp dispenser
US6394165B1 (en) Self-adhesive element dispenser and applicator device and method thereof
US4718220A (en) Device for applying a closing strip and a cassette therefor
EP0288932A1 (en) Unitary tape-ribbon cartridge for lettering system
US5005730A (en) Orthodontic dispenser
JP2001508385A (en) Manual device for transferring film from carrier tape to support
PL182980B1 (en) Gear box for driving a winding reel core in tape dispensers
US3077919A (en) Dispenser for tape having paper backing
CA1115668A (en) Multiple wound roll dispenser and cutter mechanism for use therein
WO1988008395A1 (en) Sealing strip applicator and cartridge
EP0670800B1 (en) A device for applying a closing strip
FI62502B (en) HANDDRIVEN ANORDNING FOER TRYCKNING OCH / ELLER ANBRINGANDE AV SJAELVHAEFTANDE ETIKETTER
EP0063721B1 (en) A ribbon cartridge for a typewriter
US4204905A (en) Taping machine
US6945298B2 (en) Device for dispensing two sided adhesive tape pieces and a refill roll for the device
JPH0314705B2 (en)
US4817840A (en) Apparatus for feeding leader tape

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE