EP1454860A2 - Verfahren und Vorrichtung zum Verbinden von Klebebändern - Google Patents

Verfahren und Vorrichtung zum Verbinden von Klebebändern Download PDF

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Publication number
EP1454860A2
EP1454860A2 EP04251028A EP04251028A EP1454860A2 EP 1454860 A2 EP1454860 A2 EP 1454860A2 EP 04251028 A EP04251028 A EP 04251028A EP 04251028 A EP04251028 A EP 04251028A EP 1454860 A2 EP1454860 A2 EP 1454860A2
Authority
EP
European Patent Office
Prior art keywords
tape
reel
splicing
rollers
tapes
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.)
Withdrawn
Application number
EP04251028A
Other languages
English (en)
French (fr)
Other versions
EP1454860A3 (de
Inventor
Gary Brooks
Michael Booth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Filtrona United Kingdom Ltd
Original Assignee
Filtrona United Kingdom Ltd
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 Filtrona United Kingdom Ltd filed Critical Filtrona United Kingdom Ltd
Publication of EP1454860A2 publication Critical patent/EP1454860A2/de
Publication of EP1454860A3 publication Critical patent/EP1454860A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings
    • B31B50/8126—Applying strips or strings, e.g. tear strips or strings parallel to the direction of movement of the webs or the blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
    • B31B50/8125—Applying strips or strings, e.g. tear strips or strings
    • B31B50/8129—Applying strips or strings, e.g. tear strips or strings the webs or blanks moving during application of the strips or strings

Definitions

  • the present invention relates to improvements in assembling packaging, especially packaging which incorporates a tape, such as a tear tape, to assist in the opening of a package.
  • a tape such as a tear tape
  • a sheet of packaging material which will form a plurality of packages is printed, before being cut into the requisite sized packages. If a tear tape is to be included in the finished package, this is usually applied after the printing step, but before the sheet is cut. Tear tape is usually supplied on self-wound reels, wherein one side of the tape is coated with pressure-sensitive adhesive, and the other side is coated with a release agent, such as silicon. Such a tape is disclosed in the applicant's own EP 0 121 371. Alternatively, if the tape is not self-wound, a release paper may be provided to prevent the tape from adhering to itself too strongly. Alternatively, an adhesive, such as hot melt adhesive, can be applied to one side of the tape, by a hot shoe, or similar device as a step of the application process.
  • the present invention is mainly concerned with the application of self-wound tear tape to packaging, where one side of the tape is coated with release agent and the other is coated with pressure-sensitive adhesive.
  • This type of tape has advantages over the hot melt adhesive type in that: the tape can be applied more quickly, there is less likelihood of the adhesive contaminating other parts of the machinery, and no adhesive seeps out from under the tape after its application. Such seepage could, for example, cause problems when different packaging portions to which tapes are applied are stacked on top of each other, especially when the adhesive is still warm.
  • EP 0358 477 discloses a toggle for attaching the trailing edge of a tape currently in use to the leading end of a reserve tape.
  • the tape in use is supplied with a pin, which is disposed transversely to the axial extent of the tape.
  • the reserve tape is provided with a loop, through which the tape in use (i.e. current tape) passes. When the pin attached to the tape in use contacts the loop, the reserve tape will be drawn into the machine. The portion of packaging incorporating this toggle will subsequently have to be located manually and discarded. This document discusses the fact that this toggle may cause the reserve tape to be fed into the machine upside down and that this could be a problem for tapes with one adhesive side.
  • the document discusses including a tail segment, where the portion of the tape in use that is attached to the reel is loosely attached (for example, with masking tape) to the portion of the in use tape having the pin.
  • this arrangement involves complicated preparation of the tapes and is therefore undesirable.
  • US 4,572,460 discloses a similar system in which the tape in use is provided with an aperture, and the reserve tape is supplied with a "mushroom-like" tab. There is no mention of any modification that would make this apparatus suitable for use with adhesive tape.
  • One aspect of the present invention provides a method of splicing tapes, having an adhesive coating, the method comprising the steps of:
  • the method includes the steps of monitoring the amount of tape remaining on the first reel and moving the rollers in the splicing area into the closed position when the amount of tape remaining on the first reel falls to a predetermined level.
  • At least one of the first or second tapes should be coated with adhesive on one side.
  • the method further includes the step of cutting the first tape after the tapes have been joined.
  • the method further includes the step of moving the rollers to the open position.
  • the step of monitoring the amount of tape remaining on the first reel may be automated.
  • the step of moving the rollers to the closed position when the amount of tape remaining on the first reel falls to a predetermined level may be automated, and may be based on the automatic monitoring of the amount of tape remaining on the first reel.
  • the step of cutting the first tape may be automatic, and may be performed when a predetermined time has elapsed with the rollers in the closed position.
  • the step of monitoring the amount of tape on the first reel may comprise the steps of:
  • the step of monitoring the amount of tape on the first reel may comprise the steps of:
  • an apparatus for supplying a continuous length of adhesive tape from reels carrying discrete amounts of adhesive tape comprising:
  • first and second tape dispensers for holding first and second reels of adhesive tape, respectively, wherein the splicing unit further includes at least one reserve tape retaining means, for retaining a leading edge of a tape from one of the first or second reels as a reserve reel.
  • the other of the first or second reels may be provided with an automatic monitoring system for monitoring the amount of tape held on the reel.
  • the monitoring system may be connected to a control unit, which is arranged to move the rollers from the open position to the closed position when a signal from the monitoring system indicates that the amount of tape held on the currently-supplying reel has reached a predetermined low level.
  • the control unit may also control the reserve tape retainer, for allowing a tape held thereon to become released therefrom when the rollers move into the closed position.
  • the control unit may actuate a cutting mechanism, for cutting a tape from a spent reel when the rollers are in the closed position.
  • the cutting may be activated a predetermined time after the rollers have been moved into the closed position.
  • the control unit may return the rollers into the open position a predetermined time after they moved into the closed position.
  • the monitoring unit may comprise:
  • the monitoring unit may comprise:
  • a DC output may be produced by the monitoring unit which may then be input into a control unit.
  • tape splicing apparatus for splicing together tapes from different tape supply reels, the apparatus comprising:
  • the present invention may include any combination of the features and/or limitations referred to herein, except such features as are mutually exclusive.
  • Fig. 1 shows generally at 10 a tape dispensing unit in accordance with an embodiment of the present invention, feeding tear tapes 12, 13, to a continuous portion of packaging material 14.
  • the portion of packaging may be, for example, in a printing machine, so that commercial graphics and other information may be printed thereon.
  • the dispensing unit may be located outside the printing machine.
  • the tear tape is applied to the packaging portions so that consumers may easily open the assembled packages.
  • two tapes each of which is a self-wound pressure sensitive tear-tape, having one surface coated in pressure-sensitive adhesive and having the other, opposed surface coated in a silicon release coating, are applied to the packaging portion 14. This portion will subsequently be cut into individual packaging portions, each of which will eventually form a package.
  • tapes In practice a larger number of tapes can be applied in this way (for example 6 tapes). Tape is applied to the packaging from a reel. A reserve reel also holding tape is provided. When the end of the tape on the reel in use is reached the tape dispensing unit splices together the end of the tape in use with the beginning of the reserve reel, so that tape is fed continuously to the packaging material.
  • Fig. 2 shows the dispensing unit 10 of Fig. 1 in more detail, where tapes 12, 13 are being dispensed from the machine 10.
  • tapes 12, 13 there are two servo-assisted motor-driven dispenser reels 16a, 16b.
  • the tape from these reels is conveyed to a splice unit 18 via accumulators 20.
  • the splice unit ensures that a continuous supply of tape is dispensed from the dispensing unit 10, even when the supply from one of the reels 16a, 16b becomes exhausted.
  • a control cabinet 22 is disposed on the side of the dispensing unit 10. The function of this will be described later.
  • Fig. 3 shows the splice unit 18 of Fig. 2 in more detail.
  • Two tapes 12a and 12b are fed into the splice unit.
  • the upper tape 12a is in use - i.e. it is currently being applied to the packaging (not shown). It is fed through the splice unit, and onto an accumulator. It is then fed out of the machine and applied to packaging, as shown in Fig. 1.
  • the lower tape 12b is in the standby position. It is manually fed into the splicing unit by an operative, and the leading edge is held in place by a vacuum shoe 26b.
  • Fig. 4 shows a perspective view of the splicing unit with the tape 12b in the standby position, resting on the vacuum shoe 26b.
  • the tape is prevented from being accidentally drawn back onto its supply reel by a one-way tape-clamp roller 28b and a roller 30b.
  • Fig. 5 shows a perspective view of the splicing unit with the upper tape 12a in use.
  • the tape is guided by a roller 30a, and passes over a tape guide roller 32.
  • the splicing unit has upper and lower parts 18a, 18b, carrying the upper and lower tapes 12a, 12b respectively.
  • the control unit 22 determines that the supply of the upper tape 12a has almost finished, the upper and lower portions of the splicing machine 18a, 18b are pressed together.
  • Fig. 6 shows the splicing unit when the upper and lower portions are brought together.
  • a pneumatic actuator 33a, 33b is connected to each of the upper and lower section of the splicing machine to enable the two sections to be pressed together.
  • the upper tape, currently in use 12a is pressed against the lower, reserve tape 12b by nip rollers 34a, 34b.
  • the upper and lower nip rollers are provided with appropriate coatings to prevent them from sticking to the surfaces of the tapes with which they are in contact.
  • the calculated force at the point of joining the two tapes together between the nip rollers is in the region of 175N.
  • the pressure sensitive adhesive coating of one tape adheres sufficiently well to the release coating of the other tape and over a sufficient length, such that one tape may pull the other.
  • the upper tape 12a is cut against an anvil 36, by a cutter 38a.
  • the leading edge of the lower tape is now attached to the trailing edge of the upper tape 12a and the former is drawn out of the splicing machine.
  • the reel dispensers are motorised since the new reel will have a large amount of inertia. This reduces the risk of the tape breaking under the tension caused by acceleration.
  • each tape runs from its dispenser to an accumulator.
  • the accumulator has the effect of accelerating the tape slightly before splicing occurs, and allows the length of the tape path to decrease slightly after splicing has occurred, to reduce the effect of the tension caused by the acceleration.
  • Fig. 7 shows the two portions of the upper and lower tape 12a, 12b spliced together.
  • the top diagram shows how the tapes are spliced together in the case of the splicing discussed in relation to Fig. 6 (i.e. where the upper tape 12a is replaced with the lower tape 12b).
  • the old upper tape 12a has pressure sensitive adhesive 40 on its underside. This sticks to the non-adhesive side of the new lower tape 12b.
  • Part of the packaging material will have a portion of tape in which there is a double thickness of tape, as shown in Fig. 7. However, this portion of tape will not be able to function as a tear tape because the adhesive bond between the two portions of tape is not strong enough to adhere the portions together when the tape is torn through packaging.
  • the average breaking strength of a splice of two self-windable tapes with an overlap of 70mm is 4.2 kg. This weak bonding is necessarily the case, since in the case of self-wound tape one side of the tape is coated with a release coat which prevents the surface of the tape coated with pressure sensitive adhesive from sticking to its adjacent winding too strongly. Accordingly, the portion of the packaging which carries this double thickness of tape must be located and discarded.
  • the lower diagram in Fig. 7 shows the positioning of the tapes if the lower tape 12b is in use, and a new upper tape 12a is to be spliced thereon. In either case the adhesive 40 on the underside of the upper tape 12a adheres the tapes together.
  • Fig. 8 shows a perspective view of one of the portions of the splicing machine 18b in more detail.
  • the tapes are clamped in the reserve position by a clamp roller 28b and a tape guide roller 30b. These rollers are positioned by a pneumatic cylinder 42.
  • the cutter 38b which is arranged to cut an almost spent tape which has been spliced, is a rotary cutter.
  • the cutter and the nip rollers 34b are moved by a pneumatic actuator 33b. This allows the nip rollers of the upper and lower portions of the splicing unit 18a, 18b to be moved together and apart, to perform the splicing action.
  • the vacuum shoe, or guide block 26b has a channel, with small holes disposed therein. The vacuum shoe is held at a slightly negative pressure; hence the holes will draw the tape to the shoe and hold it thereon.
  • Fig. 9 shows a detection system mounted on the wall of the dispensing unit.
  • This detection system detects the radius of a reel of tape 44 so that the splicing unit can be activated when the amount of tape on the reel in use falls to a low level.
  • An arm 46 is pivotally mounted on the case of the detection unit. This arm rests on the circumference of the reel.
  • a metal target 48 is housed on the arm 46. As the tape on the reel is used, the diameter of the reel decreases and the arm falls.
  • An inductive sensor 50 is located in the proximity of the arm, and when the arm falls the metal target moves near the inductive sensor 50.
  • a signal can be sent to order the splicing unit to activate, hence splicing the new, reserve tape and preventing the supply of tape from running out.
  • An accumulator arm 20, balanced by an adjustable weight 52 can also be seen in this diagram.
  • Fig. 10 shows another, alternative detection system.
  • This system also involves an arm pivotally mounted on the case of the detection unit.
  • the arm is connected to a potentiometer 54.
  • the position of the arm is converted to a DC output by the potentiometer, between 0 and 10 V.
  • This input can be used to derive information about the amount of tape left on the reel, and may detect as little as one tape thickness remaining on the reel.
  • the controller can instruct the splicing unit to splice the new, reserve tape.
  • Fig. 10 also shows an additional potentiometer 56. This can be used to control the speed of the motor 58 which drives the main shaft onto which the reel of tape is mounted.
  • the tape dispenser is provided with a motorised spool 60.
  • the tape may also be conveyed via an accumulator, which can provide a variable tape path, which shortens when the tape is subject to higher tension.
  • Fig. 10 also shows an inductive sensor 62 for detecting whether a tape is missing.
  • a suitable signal or alarm can be activated to alert an operator to the absence of tape.
  • Fig. 11 shows a schematic diagram a control system which can be utilised by the dispensing unit.
  • Digital inputs relating to various information are fed into the programmable logic controller.
  • the information can include, for example: whether the top or bottom tape has been selected (with a push-button); whether the end of the reel has been sensed with a inductive sensor 50; whether a reel of tape is missing, as sensed by a inductive sensor 62; or whether the nip rollers are in an open or closed configuration, as sensed by a reed switch on a pneumatic actuator 33a, 33b.
  • Analogue inputs such as those received by the inductive sensor shown in Fig. 9 or the potentiometers shown in Fig. 10 are also fed into the programmable logic controller.
  • the controller can then control various activities of the dispensing machine. For example, when the voltage output by the potentiometers reaches a certain level corresponding to an almost empty reel the pneumatic actuators attached to the upper and lower portions of the splicing machine are activated to draw the nip cylinders on the upper and lower portions of the splicing unit together, so that splicing may take place. Furthermore, a signal may need to be sent to the pneumatic cylinder controlling the position of the clamp roller and the tape guide roller clamping a tape in the upper or lower clamp roller, so that the tape can be released in preparation for splicing.
  • a signal to turn off the vacuum on the upper or lower vacuum shoes, to prevent the vacuum from holding the leading edge of a reserve tape may need to be sent.
  • a signal may also need to be sent to the upper or lower rotary cutter so that the upper or lower tape may be cut after splicing.
  • the detection of the amount of tape remaining on the reel can be performed automatically, and this information can be used to perform the splicing of the tape in use to the reserve tape automatically.
  • these functions could also be performed manually.

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  • Replacement Of Web Rolls (AREA)
EP04251028A 2003-02-25 2004-02-25 Verfahren und Vorrichtung zum Verbinden von Klebebändern Withdrawn EP1454860A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0304271 2003-02-25
GBGB0304271.0A GB0304271D0 (en) 2003-02-25 2003-02-25 Improvements in assembling packaging

Publications (2)

Publication Number Publication Date
EP1454860A2 true EP1454860A2 (de) 2004-09-08
EP1454860A3 EP1454860A3 (de) 2007-01-24

Family

ID=9953611

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04251028A Withdrawn EP1454860A3 (de) 2003-02-25 2004-02-25 Verfahren und Vorrichtung zum Verbinden von Klebebändern

Country Status (4)

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US (2) US20040217225A1 (de)
EP (1) EP1454860A3 (de)
CA (1) CA2458843A1 (de)
GB (1) GB0304271D0 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3578344B1 (de) * 2017-06-20 2022-10-19 Fameccanica.Data S.p.A. Verfahren zum automatischen laden von rollen in eine abwickelanordnung
CN117719923A (zh) * 2024-02-07 2024-03-19 晶科能源(海宁)有限公司 光伏胶膜上料设备、胶膜拼接设备及光伏胶膜上料方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613042A (en) * 1948-07-13 1952-10-07 Ohio Rubber Co Splicing device
US2752984A (en) * 1952-03-26 1956-07-03 Minnesota Mining & Mfg Flying tape splice for pressure-sensitive adhesive tape
US3783064A (en) * 1970-12-09 1974-01-01 Matsushita Electric Ind Co Ltd Method and apparatus for automatically connecting tapes
US4113197A (en) * 1975-12-01 1978-09-12 Molins Limited Cigarette paper splicing apparatus
US6082661A (en) * 1997-07-18 2000-07-04 Focke & Co. (Gmbh & Co.) Method and device for handling adhesive webs

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021002A (en) * 1975-06-23 1977-05-03 Butler Automatic, Inc. Auto-splice system
US4572460A (en) * 1984-02-13 1986-02-25 Digital Equipment Corporation Means for pulling tape from a reel
CA1226185A (en) * 1984-02-27 1987-09-01 James Grandlouis Ash remover
EP0365470B1 (de) * 1988-10-17 1996-01-03 SIG Schweizerische Industrie-Gesellschaft Vorrichtung zum Verbinden des Endes eines Bandes mit dem Anfang eines anderen Bandes
IT1234006B (it) * 1989-07-05 1992-04-23 Gd Spa Dispositivo per il controllo di bobine in esaurimento, in particolare applicabile su macchine incartatrici
US5252170A (en) * 1991-07-11 1993-10-12 Shibuya International, Inc. Web splicing apparatus
IT1263426B (it) * 1993-06-01 1996-08-05 Gd Spa Metodo e dispositivo per il collegamento di due nastri sottili fra loro.
DE69419935T2 (de) * 1993-11-11 2000-03-30 Packline Ltd., Norfolk Verpacken
US6051095A (en) * 1998-07-20 2000-04-18 C.G. Bretting Manufacturing Company, Inc. Flying web splice apparatus and method
US6893528B2 (en) * 2000-11-01 2005-05-17 Adalis Corporation Web material advance system for web material applicator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2613042A (en) * 1948-07-13 1952-10-07 Ohio Rubber Co Splicing device
US2752984A (en) * 1952-03-26 1956-07-03 Minnesota Mining & Mfg Flying tape splice for pressure-sensitive adhesive tape
US3783064A (en) * 1970-12-09 1974-01-01 Matsushita Electric Ind Co Ltd Method and apparatus for automatically connecting tapes
US4113197A (en) * 1975-12-01 1978-09-12 Molins Limited Cigarette paper splicing apparatus
US6082661A (en) * 1997-07-18 2000-07-04 Focke & Co. (Gmbh & Co.) Method and device for handling adhesive webs

Also Published As

Publication number Publication date
CA2458843A1 (en) 2004-08-25
US20060157187A1 (en) 2006-07-20
US20040217225A1 (en) 2004-11-04
EP1454860A3 (de) 2007-01-24
GB0304271D0 (en) 2003-03-26

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