GB2349603A - Method and apparatus for attaching a releasable fastener to a web material - Google Patents

Method and apparatus for attaching a releasable fastener to a web material Download PDF

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Publication number
GB2349603A
GB2349603A GB9910205A GB9910205A GB2349603A GB 2349603 A GB2349603 A GB 2349603A GB 9910205 A GB9910205 A GB 9910205A GB 9910205 A GB9910205 A GB 9910205A GB 2349603 A GB2349603 A GB 2349603A
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GB
United Kingdom
Prior art keywords
zipper
base material
sealing
lengths
turret
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
Application number
GB9910205A
Other versions
GB9910205D0 (en
GB2349603B (en
Inventor
Murray Leighton
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.)
SUPREME PLASTICS GROUP Ltd
Original Assignee
SUPREME PLASTICS GROUP 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 SUPREME PLASTICS GROUP Ltd filed Critical SUPREME PLASTICS GROUP Ltd
Priority to GB9910205A priority Critical patent/GB2349603B/en
Publication of GB9910205D0 publication Critical patent/GB9910205D0/en
Publication of GB2349603A publication Critical patent/GB2349603A/en
Application granted granted Critical
Publication of GB2349603B publication Critical patent/GB2349603B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/005—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article
    • B29C69/006—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore cutting-off or cutting-out a part of a strip-like or sheet-like material, transferring that part and fixing it to an article rotating transfer means
    • 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7891—Means for handling of moving sheets or webs of discontinuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
    • B29C66/4722—Fixing strips to surfaces other than edge faces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8161—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps said pressing elements being supported or backed-up by springs or by resilient material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/841—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions
    • B29C66/8412—Machines or tools adaptable for making articles of different dimensions or shapes or for making joints of different dimensions of different length, width or height
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • B29C66/91445—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile by steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C67/00—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00
    • B29C67/0044—Shaping techniques not covered by groups B29C39/00 - B29C65/00, B29C70/00 or B29C73/00 for shaping edges or extremities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2005/00—Elements of slide fasteners
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8133—Applying the closure elements in the cross direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)

Abstract

Apparatus for fixing zippers to webs suitable for retrofit installation on a form-fill-seal machine for making filled bags or pouches from a continuous web 24 of base material comprises means for supplying cut lengths of zipper singly to a feed-in point 1 of a stepwise rotatable turret device 20 and a sealing station 3 where the zipper and base material are sealed together transversely to the direction of movement of the web. The rotating turret device 20 has a second station 2 where the ends of the zipper are crushed by a crusher 32 to ensure the zipper profiles are mated together in order to start the closing of the profiles on the finished bags. The zipper and base material are sealed together between a sealer 36 and a retractable pressure plate 34. A second set of sealing jaws (42, Figure 5) may be provided downstream of the main end sealing jaws 34, 36 for sealing the flanges of the zipper to the web material. The second set of sealing jaws (42) may be spring loaded.

Description

RETROFIT SYSTEM FOR VERTICAL FORM, FILL AND SEAL MACHINES This invention relates generally to retrofit systems to be fitted to a host vertical form, fill and seal machine, and is more particularly concerned with cross web retrofit systems designed to apply a resealable profile or zipper to a base material transversely across the web, i. e. at 90 to the direction of movement of the web, for subsequent progress through the host machine.
It is one object of the present invention to provide a cross web retrofit system which will fit the majority of vertical form, fill and seal machines, and in particular intermittent pull, belt-driven vertical form, fill and seal machines.
Many machines and methods'have been developed in the field of cross web technology for the application of zippers transversely across a web of material. It is another object of the present invention to provide a cross web retrofit system which can be fitted to an existing form, fill and seal host machine in order to enable such machines to take advantage of cross web technology.
Broadly in accordance with one aspect of the present invention there is provided a cross web retrofit system which comprises means for supplying zipper, means for feeding the zipper from the supply and cutting it to length, and a rotatable turret device to which the cut zipper is fed, the turret device being rotatable stepwise and being arranged to present the zipper to a sealing station at which the zipper is sealed to a base material transversely to the direction of movement of the base material.
Broadly in accordance with another aspect of the invention there is provided a method of fixing a zipper to a base material which comprises cutting a zipper strip into predetermined lengths, feeding the cut lengths to a rotatable turret device which is rotatable stepwise, and using the turret device to present the zipper to the base material at a sealing station where it is sealed to the base material transversely to the direction of movement of the base material.
Broadly in accordance with a further aspect of the invention there is provided apparatus for sealing a zipper to a base material, which comprises a turret device which is rotatable stepwise, the turret device having at least three stations, at a first of which lengths of zipper are fed to the turret device and held thereby, at a second of which the ends of the zipper are crushed together, and at a third of which the zipper is sealed to a base material transversely to the direction of movement of the base material.
The cross web retrofit system of the present invention preferably comprises the following components: a) Unwind stand b) Zipper feed and cut unit c) Rotating turret d) Primary seal unit e) Modified forming assembly f) Spring loaded seal bars In essence, the cross web retrofit system of the present invention takes a resealable profile or zipper from a standard reel and feeds it from a standard unwind stand through a servo-driven set of nip rollers and a guillotine which measure and cut the zipper to the correct length. The cut zipper is then fed into a servo-driven rotating turret device which has four positions and rotates through 90 on each pull of the base material. The zipper is attached to the base material at this point and is then fed past a modified forming device of the host unit and down into a second set of sealers which are located under the main end seal bars of the form, fill and seal machine.
A particular advantage of the retrofit system of the present invention is that it is designed to require only a single signal from the host unit, i. e. the form, fill and seal machine. This signal would normally be generated by the backseal of the host machine. All the other controls for the retrofit system are located within the retrofit unit itself.
Although the cross web retrofit system of the present invention can be used with various forms of zipper, i. e. resealable profile, it is particularly advantageous to use a zipper of the type described in our copending UK patent application GB9827287.5. This discloses a fastener strip comprising a male portion and a female portion which have respective profile members which are interengagable and disengagable, wherein one of the portions is provided with primary sealing means for sealing to a base material, and both of the portions are provided with secondary sealing means for sealing to the base material. In a particularly preferred embodiment, the fastener strip has flanges, with the flanges to one side of the interengagable profile members being provided with posts in close facing relationship and with the secondary sealing means on the outside faces thereof.
In order that the present invention may be more fully understood, one presently preferred embodiment of cross web retrofit system in accordance with the invention will now be described by way of example and with reference to the accompanying drawings, in which: Fig. 1 is a schematic front view of the retrofit system; Fig. 2 is a schematic top plan view of the retrofit system of Fig. 1; Fig. 3 is a schematic representation of the zipper feed and cut unit, feeding to the turret; Fig. 4 is a schematic illustration of the turret and the method of sealing the zipper to the base material; and Fig. 5 illustrates the use of spring-loaded zipper sealing jaws located below the main sealing jaws of the host unit.
Figs. 1 and 2 show the cross web retrofit system of the present invention in schematic form. There is shown an unwind unit 10, the resealable profile or zipper 12 and the turret/seal unit which is indicated generally at 20 in Fig.
2.
The unwind unit 10 is a stand-alone unit of conventional form which permits tension-free feeding of the resealable profile 12 by way of a counter-balanced dancer mechanism. The unit is housed in a chassis which is mounted on castors and is located at the side of the host unit. The control system for the unwind unit is very simple. The resealable profile is pulled from the unit and a dancer bar rises, clearing an eye which sends a signal to a programmable inverter, which controls the motor. The inverter is easily programmed for acceleration, maximum velocity and deceleration, thus ensuring an even tension no matter what the pay-off rate is.
The resealable profile 12 which comes from the unwind unit 10 is taken through a set of rubber-coated servo-driven drive rollers 16 (Fig. 3) which feed out a programmable predetermined length of zipper through a guillotine 18 and into a rotatable turret indicated generally at 20. The servo drive for the feed rollers 16 is indicated at 22. The bottom feed roller 16 is driven directly from a servo motor in the servo drive 22. Deceleration and stop signals for the drive are provided by photo cells which are located at the top of the rotatable turret. The top feed roller 16 is free-running and spring-loaded to grip the zipper 12. The guillotine 18 comprises an air-driven knife.
Referring now to Fig. 4, this shows the rotatable turret 20. The web of base material to which the resealable profile is to be attached is indicated at 24. The direction of rotation of the turret 20 is indicated by arrow 26. The turret 20 is provided with a first guide 28 and with a second, retractable guide 30. The turret 20 has four functional positions and rotates through 90 degrees on each pull of the web material 24. The turret is servo-driven and includes a cam (not shown) to extend and retract the retractable guide 30.
In position 1, the resealable profile or zipper is fed into the guides 28,30. Located above the turret are two photo cells (not shown) which are adjustable in the horizontal plane and which determine the deceleration and stop points for the servo-driven feed rollers 16. The turret is dimensioned for the maximum size bag width and there is therefore no need to change any parts on the turret in order to cope with different sizes of bag made from the base material 24.
At position 2 two profile end crushers indicated generally at 32 are provided. At least one of these is adjustable in the horizontal plane. The profile end crushers 32 crush the two ends of the profile together, thus ensuring the profiles are mated together in order to start the closing of the profile on the finished bag. The crushers 32 are airoperated and heated.
At position 3, the retractable guide 30 is retracted and a retractable pressure plate 34 moves into the illustrated position above the web material 24. A sealer 36 positioned below the web material 24 is advanced towards the web material and effects the sealing of the web material and the profile by pressure against the pressure plate 34. The retractable pressure plate 34 then retracts before the next pull of the web material, in order to allow the profile to exit the turret. Both the retractable pressure plate 34 and the sealer 36 are air-operated and the sealer 36 is heated.
At position 4, the retractable guide 30 is extended again, ready to receive the next length of profile at position 1.
After the resealable profile has been attached to the web material, i. e. film, the combination is then fed past the forming device of the form, fill and seal host unit. The forming device can be conventional, except that the collar and tube must have of the order of 5 millimetres relief in order to allow the passage of the profile. After the forming and filling process the bag material passes down towards the sealing unit. As shown in Fig. 5, the main sealing jaws, i. e. main end seal bars, of the host unit are indicated at 40. A second set of sealers are located below the sealing jaws 40.
These are spring-loaded zipper sealing jaws indicated at 42.
As well as being spring-loaded they are also heated in order to seal the two upper flanges of the profile to the base material.
The cycle speed of the system of the present invention is dependent on the host unit and the materials used, but application speeds in excess of 70 per minute can be achieved.
It is to be understood. that the present invention is concerned not only with the cross web retrofit system per se but is also concerned with an improved method of and apparatus for the application of a resealable profile to a base material across the web, i. e. by the use of a rotatable turret device.

Claims (17)

CLAIMS:
1. A method of fixing a zipper to a base material which comprises the steps of: -cutting a zipper strip into predetermined lengths, -feeding the cut lengths to a rotatable turret device which is rotatable stepwise, -and operating the turret device to present the lengths of zipper to the base material at a turret sealing station where the lengths of zipper are sealed to the base material transversely to the direction of movement of the base material.
2. A method according to claim 1, which includes crushing the ends of each length of zipper at a turret station between receipt of the lengths of zipper and the sealing station.
3. A method according to claim 1 or 2, which includes holding the lengths of zipper on the turret by guide means whose holding function is released at the sealing station, thereby to permit the lengths of zipper to be presented to the base material.
4. A method according to claim 1,2 or 3, which includes sealing the zipper to the base material at the sealing station between a heated sealing means and a retractable pressure plate.
5. A method of operating a form-fill-seal machine which comprises: -feeding a continuous length of base material to a stepwise rotatable turret device, -cutting a zipper strip into predetermined lengths, -feeding the cut lengths to a receiving station of the turret device, -operating the turret device to present the lengths of zipper to the base material at a turret sealing station where the lengths of the zipper are sealed to the base material transversely to the direction of movement of the base material, -feeding the combination of zipper and base material past a forming device to define an envelope, -filling the envelope, and -sealing the base material at sealing jaws to form filled bags or pouches
6. A method according to claim 5, which includes sealing flanges of the zipper to the base material at a second set of sealing jaws downstream from said base material sealing jaws.
7. A retrofit system for installation on a form-fillseal machine for making filled bags or pouches from a continuous web of base material, which comprises means for supplying recloseable zipper, means for feeding the zipper from the supply means and cutting it into predetermined lengths, and a rotatable turret device to which the cut zipper is fed and on which it is received at a receiving station, the turret device being rotatable stepwise and being arranged to present the zipper to a sealing station at which the zipper is sealed to the web of base material transversely to the direction of movement of the web.
8. A retrofit system according to claim 7, in which the turret device includes a station between the receiving station and the sealing station at which the ends of each length of zipper are crushed.
9. A retrofit system according to claim 7 or 8, in which the turret device comprises guide means to hold the cut lengths of zipper on the turret, the guide means being arranged to release the zipper at the sealing station.
10. A retrofit system according to claim 7,8 or 9, in which at the sealing station there is provided heated sealing means and a retractable pressure plate between which the zipper and the web material are sealed together.
11. A retrofit system according to any of claims 7 to 10, which includes a set of sealing jaws downstream from main end sealing jaws of the host machine arranged to seal flanges of the zipper to the base material.
12. A retrofit system according to claim 11, in which the zipper sealing jaws are spring-loaded and heated.
13. Apparatus for sealing a zipper to a web of base material, which comprises a turret device which is rotatable stepwise, the turret device having at least three stations, at a first of which lengths of zipper are fed singly to the turret device and are held thereby, at a second of which the ends of the zipper are crushed together, and at a third of which the zipper is sealed to the base material transversely to the direction of movement of the base material.
14. A method of fixing a zipper to a base material, substantially as hereinbefore described with reference to the accompanying drawings.
15. A method of operating a form-fill-seal machine, substantially as hereinbefore described with reference to the accompanying drawings.
16. A retrofit system for installation on a form-fillseal machine, substantially as hereinbefore described with reference to the accompanying drawings.
17. A vertical form-fill-seal machine fitted with a retrofit system as claimed in any of claims 7 to 12 or 16.
GB9910205A 1999-05-05 1999-05-05 Method of fixing a zipper to a base material, apparatus therefor, retrofit system for form, fill and seal machines and method of operating a f.f.s machine Expired - Lifetime GB2349603B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9910205A GB2349603B (en) 1999-05-05 1999-05-05 Method of fixing a zipper to a base material, apparatus therefor, retrofit system for form, fill and seal machines and method of operating a f.f.s machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9910205A GB2349603B (en) 1999-05-05 1999-05-05 Method of fixing a zipper to a base material, apparatus therefor, retrofit system for form, fill and seal machines and method of operating a f.f.s machine

Publications (3)

Publication Number Publication Date
GB9910205D0 GB9910205D0 (en) 1999-06-30
GB2349603A true GB2349603A (en) 2000-11-08
GB2349603B GB2349603B (en) 2002-12-18

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GB9910205A Expired - Lifetime GB2349603B (en) 1999-05-05 1999-05-05 Method of fixing a zipper to a base material, apparatus therefor, retrofit system for form, fill and seal machines and method of operating a f.f.s machine

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355687A (en) * 1999-09-24 2001-05-02 Molins Plc Method and apparatus for producing bags having a reclosable fastener
WO2003097341A1 (en) * 2002-05-21 2003-11-27 Supreme Plastics Holdings Limited Application of zippers to film material
US6868654B2 (en) * 2002-04-18 2005-03-22 Pro-Pac Services, Inc. Packaging machine for producing reclosable packages
US7266934B2 (en) 2002-08-08 2007-09-11 Illinois Tool Works, Inc. Reclosable bag production
CN104827663A (en) * 2015-04-17 2015-08-12 林保东 Annular textile ribbon splicing apparatus and control method thereof
WO2017100586A1 (en) * 2015-12-10 2017-06-15 Cmd Corporation Method and apparatus for creating pouches or bags with multiphase sealing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112454893B (en) * 2020-12-07 2022-05-17 贵州航天风华精密设备有限公司 3D printing forming cabin steel belt sealing structure and method

Citations (3)

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WO2017100586A1 (en) * 2015-12-10 2017-06-15 Cmd Corporation Method and apparatus for creating pouches or bags with multiphase sealing
US10399273B2 (en) 2015-12-10 2019-09-03 Cmd Corporation Method and apparatus for creating pouches or bags with multiphase sealing
US10780645B2 (en) 2015-12-10 2020-09-22 Cmd Corporation Method and apparatus for creating pouches or bags with multiphase sealing

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GB2349603B (en) 2002-12-18

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