WO1999057017A1 - A method and a system for filling goods in bags from a coherent series of bag members - Google Patents

A method and a system for filling goods in bags from a coherent series of bag members Download PDF

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Publication number
WO1999057017A1
WO1999057017A1 PCT/DK1999/000219 DK9900219W WO9957017A1 WO 1999057017 A1 WO1999057017 A1 WO 1999057017A1 DK 9900219 W DK9900219 W DK 9900219W WO 9957017 A1 WO9957017 A1 WO 9957017A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
bag
bags
edge
mouth
Prior art date
Application number
PCT/DK1999/000219
Other languages
Danish (da)
French (fr)
Other versions
WO1999057017A8 (en
Inventor
Henrik Pape
Original Assignee
Schur Packaging Systems A/S
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
Priority to BR9909800-8A priority Critical patent/BR9909800A/en
Priority to HU0103119A priority patent/HU226909B1/en
Priority to AU31386/99A priority patent/AU753412B2/en
Priority to AT99913128T priority patent/ATE271999T1/en
Application filed by Schur Packaging Systems A/S filed Critical Schur Packaging Systems A/S
Priority to US09/647,928 priority patent/US6591586B1/en
Priority to PL343472A priority patent/PL196547B1/en
Priority to JP2000547001A priority patent/JP4234906B2/en
Priority to CA002329740A priority patent/CA2329740C/en
Priority to NZ507571A priority patent/NZ507571A/en
Priority to DE69918992T priority patent/DE69918992T2/en
Priority to EP99913128A priority patent/EP1087890B1/en
Publication of WO1999057017A1 publication Critical patent/WO1999057017A1/en
Priority to NO20005252A priority patent/NO317885B1/en
Publication of WO1999057017A8 publication Critical patent/WO1999057017A8/en
Priority to HK01106966A priority patent/HK1037584A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/42—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation
    • B65B43/46—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers
    • B65B43/465—Feeding or positioning bags, boxes, or cartons in the distended, opened, or set-up state; Feeding preformed rigid containers, e.g. tins, capsules, glass tubes, glasses, to the packaging position; Locating containers or receptacles at the filling position; Supporting containers or receptacles during the filling operation using grippers for bags
    • 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
    • B65B43/00—Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/12—Feeding flexible bags or carton blanks in flat or collapsed state; Feeding flat bags connected to form a series or chain
    • B65B43/123—Feeding flat bags connected to form a series or chain
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]

Definitions

  • the present invention concerns a method and a sys- tern for the packing of items in bags of foil, which in a coherent web are fed through a filling station in which a filling of the individual bags is effected, and which are then closed and separated from the coherent web in the formation of individual packages .
  • a basic example of this technology is described in
  • edge holes can be effected in a quite simple manner, especially because the holes along the two upper edges areas can be formed in the same operation.
  • the carrier chains can thus be moved freely through a sequence in which, in the filling station, they will draw the folded-out web edges out from each other in such a way that the bags are hereby opened for the filling with products from above or possibly from the side.
  • the web edges can again be brought together with the view to the final closing and cutting-free of the filled bags. It will be without importance for the feeding accuracy whether a certain pull on the bag web arises during the feeding, in that this will safely be fed synchronously with the support chains .
  • the invention also comprises a bag filling machine and a packaging line configured for the execution of the method according to the invention.
  • fig. 1 is a schematic perspective view for the illustration of the invention
  • fig. 2 is a plan view of a bag web according to the invention
  • fig. 3 is a side view of a holding pin used in the system according to fig. 1.
  • a web of foil material 4 can be unwound from a supply roll 2, said web consisting of a double foil folded up around a bottom edge 6, and which along the upper edge is closed by a simple welding 8 without any bending-over or thickening of any kind. Therefore, this can also be said to be a tubular foil.
  • slots 10 which extend from the bottom edge 6 up to a distance below the top edge 8, so that the web appears with mutually separated bags 12, the side edges of which are closed by welds 14.
  • the double web is cut through at respective horizontal lines 16 which extend a short distance out to both sides of the related slots 10.
  • the support rod 20 has an upwardly-extending knife element 24 which, when the web 4 is pulled forwards, will continuously cut up the upper edge of the web, and hereafter there is arranged a continuing support system consisting of opposing, parallel chain drives 26 which are provided with upright holding pins 28 for engagement with the holes 18 in the respective upper edge parts 4 laid out to both sides, and by a pressure roller
  • the pressure roller 30 which after the threading-in of the foil web serves to press the said folded-out upper edge areas of the web 4 down against the fixed under-supported carrier chains 26 into horizontal contact against the upper sides of these, and hereby during the swinging-down of the holes 18 in such a manner that the holes 18 are swung down and engage over the chain pins 18.
  • the pressure roller 30 is configured with annular grooves 32 to provide free passage for the outer end parts of the chain pins 28, and in these grooves there are bedded transverse pins (not shown) which in a gearwheel -like fashion can co-operate with the chain pins 28 for automatic, synchronous driving of the pressure roller 30.
  • the opposing upper edge parts of the web 4 will be firmly anchored to the support pins 28, and the carrier chains can thus be controlled forward through a desired sequence for successive opening of the bags as indicated at 34, and for the closing of the bags after they have been filled. It is not considered necessary to describe this in more detail. However, it should be noted that the pins 28 are disposed in the chains' neutral lines, so that the bag web is not exposed to stretching or slackening during passages with changes in direction.
  • the filled bags With a closing of the bags by welding immediately below the top of the slots 10, and possibly a subsequent cut- ting-off, the filled bags are separated from the remaining part of the web which is rolled up as excess material.
  • star-shaped perforations 18' in that in the formation of these there will not be any problems with regard to stamped-out small parts.
  • a spot-welding assembly 5 can be effected between the opposing web sides in the part areas in between the bags. The object of these assemblies, which can be pulled apart, is to demarcate an upper longitu- dinal channel for engagement over the support rod 20 and the stabilising of the web on this rod.
  • the pins 28 can be pointed towards the top in order to ensure a more safe engagement in the star perforations 18', and also configured with a lower recess 36 which will serve to provide extra retention of the web edge area when this has first been brought completely down over the pin.

Abstract

In connection with the packaging of items or loose material in sheet packings it is known to use a web of cohering flat bag members, which is successively conveyed to a filling station, in which the bag members are opened, one by one, for filling and subsequent closing and separation from the web. The free mouth edges of the bag members or the web are profiled for supported conveyance on opposed carrier rods, tubes or gripping chains which, just before the filling station, diverge from each other for effecting opening of the bag members. The invention provides for a flat bag web, the upright edge strip portions of which are caused to be folded down over respective opposed carrier chains. These strip portions are prepared with a row of perforations which, by the said down-folding, are moved down into holding contact with holding pins upwardly projecting from the carrier chains, whereby a very safe carrying and conveying engagement is obtained without any special profilation of the mouth edges and with a simple design of the carrier chains.

Description

A method and a system for filling goods in bags from a coherent series of bag members
The present invention concerns a method and a sys- tern for the packing of items in bags of foil, which in a coherent web are fed through a filling station in which a filling of the individual bags is effected, and which are then closed and separated from the coherent web in the formation of individual packages . A basic example of this technology is described in
EP-696997, where it is disclosed that the opposing upper edge areas of the bag web are provided with bent-over channel- forming edge parts for drawing in on carrier rods, which in the feeding direction have a mutual enlargement to bring about an opening of the bags, so that these can be filled, e.g. through an overlying filling funnel, after which the carrier rods are again drawn in towards one another for provisional closing of the filled bags. The bags can then finally be closed by being welding together down under the said channel part, after which they are cut over and mutually separated. It is disclosed as an alternative that instead of the channel parts, use can be made of thickened edges which can be introduced into slotted carrier tubes for a quite corresponding feeding forwards of the bags . There have since been suggested other forms of means used for the gripping and supporting of the opposing upper edges of the bag web, e.g. as disclosed in EP 0 555 31 B, where use is made of special gripping chains for this purpose, without any special requirements concerning the con- figuration of the upper edge areas of the folded bags. This is of particular importance, in that as starting point a simple, rolled-up web of flat foil without local thickenings can be used, but on the other hand there are considerable problems both with regard to the control of the opposing bag edges for secure engagement with the gripping chains and with regard to a desirable inexpensive configuration of these chains .
Moreover, in EP 0 825 116 it is disclosed that op- erations can be carried out with a closed, flat tubular web of foil, which can be continuously cut up along its upper edge, with associated integrated folding out and gripping of the upper edges thus cut up, without these being specially configured either as channels or with thickenings, which con- stitutes a distinct simplification of the requirements concerning the formation of the bag web. The cut-up upper edge parts are folded out for clamping between respectively moved belts which are provided with longitudinal depressions and corresponding pressing-in strings, whereby a suitably firm support engagement can be established.
However, this engagement is no more firm than axial slipping can occur between the upper edges of the bag web and the associated belt conveyor means, whereby uncertainty can arise concerning the de:gree to which an item being fed has been fed forward with the conveyor belts in a fully synchronous manner. Moreover, deviations can arise with regard to the height at which that area of the web sides which are clamped between the conveyor belts lies, which can be of significance with regard to whether the filled bags are finally closed at precisely the place at which the closure is intended, e.g. seen in relation to printing on the bag.
With the present invention, it has been found possible to use the relevant cutting-up and folding-out of the upper edge areas in order to achieve a reliable and quite firm gripping of the edge areas, i.e. when these are provided beforehand with a simple Trow of small holes, and when in the folding-out and the hereto related pressing-down, care is taken that the pressing-down at least of the one side, but preferably at both sides, is effected in such a manner that these holes are placed down over upright holding pins on a feeding chain. In a simple manner, there can hereby be established a completely firm and well-defined support engagement without the bag being required to have any thickening at the upper edge, and without the carrier chains having to be configured in a complicated manner with special, controllable gripping means, in that they merely require to be provided with said upright holding pins. The formation of the edge holes can be effected in a quite simple manner, especially because the holes along the two upper edges areas can be formed in the same operation.
Correspondingly, the carrier chains can thus be moved freely through a sequence in which, in the filling station, they will draw the folded-out web edges out from each other in such a way that the bags are hereby opened for the filling with products from above or possibly from the side. Hereafter, the web edges can again be brought together with the view to the final closing and cutting-free of the filled bags. It will be without importance for the feeding accuracy whether a certain pull on the bag web arises during the feeding, in that this will safely be fed synchronously with the support chains .
The invention also comprises a bag filling machine and a packaging line configured for the execution of the method according to the invention.
In the following, the invention will be explained in more detail with reference to the drawing, in which fig. 1 is a schematic perspective view for the illustration of the invention, fig. 2 is a plan view of a bag web according to the invention, and fig. 3 is a side view of a holding pin used in the system according to fig. 1. In fig. 1 it is shown that a web of foil material 4 can be unwound from a supply roll 2, said web consisting of a double foil folded up around a bottom edge 6, and which along the upper edge is closed by a simple welding 8 without any bending-over or thickening of any kind. Therefore, this can also be said to be a tubular foil. In the web there are a number of slots 10 which extend from the bottom edge 6 up to a distance below the top edge 8, so that the web appears with mutually separated bags 12, the side edges of which are closed by welds 14. Just above the top of the slots 10, the double web is cut through at respective horizontal lines 16 which extend a short distance out to both sides of the related slots 10.
Between the top edge 8 and the cut lines 16, the edge portion of the web is broken through by a single row of perforated holes 18.
This forwardly- influence web 4, which instead of being rolled up can best appear in a supply box in zig-zag folded form, . is unwound at a filling aggregate on a support rod or support rail 20 which extends from a fixed support part 22 of the aggregate and serves for the simple support of the closed top edge 8 of the web 4.
Slightly in front of the support part 22, the support rod 20 has an upwardly-extending knife element 24 which, when the web 4 is pulled forwards, will continuously cut up the upper edge of the web, and hereafter there is arranged a continuing support system consisting of opposing, parallel chain drives 26 which are provided with upright holding pins 28 for engagement with the holes 18 in the respective upper edge parts 4 laid out to both sides, and by a pressure roller
30 which after the threading-in of the foil web serves to press the said folded-out upper edge areas of the web 4 down against the fixed under-supported carrier chains 26 into horizontal contact against the upper sides of these, and hereby during the swinging-down of the holes 18 in such a manner that the holes 18 are swung down and engage over the chain pins 18. The pressure roller 30 is configured with annular grooves 32 to provide free passage for the outer end parts of the chain pins 28, and in these grooves there are bedded transverse pins (not shown) which in a gearwheel -like fashion can co-operate with the chain pins 28 for automatic, synchronous driving of the pressure roller 30.
Hereafter, the opposing upper edge parts of the web 4 will be firmly anchored to the support pins 28, and the carrier chains can thus be controlled forward through a desired sequence for successive opening of the bags as indicated at 34, and for the closing of the bags after they have been filled. It is not considered necessary to describe this in more detail. However, it should be noted that the pins 28 are disposed in the chains' neutral lines, so that the bag web is not exposed to stretching or slackening during passages with changes in direction.
With a closing of the bags by welding immediately below the top of the slots 10, and possibly a subsequent cut- ting-off, the filled bags are separated from the remaining part of the web which is rolled up as excess material.
It must be mentioned that on the fixed support part 22 it is preferred to place a guiding element with a double- bladed ploughshare shape which actively brings about or initiates the shown folding-out of the perforated edge areas of the web, whereby improved security can be achieved with regard to the essential function, which the controlling down of the holes over the pins 28 constitutes. In fig. 2 it is shown that instead of said holes
18, it can be preferred to use star-shaped perforations 18', in that in the formation of these there will not be any problems with regard to stamped-out small parts. As indicated in fig. 2, a spot-welding assembly 5 can be effected between the opposing web sides in the part areas in between the bags. The object of these assemblies, which can be pulled apart, is to demarcate an upper longitu- dinal channel for engagement over the support rod 20 and the stabilising of the web on this rod.
In fig. 3 it is shown that the pins 28 can be pointed towards the top in order to ensure a more safe engagement in the star perforations 18', and also configured with a lower recess 36 which will serve to provide extra retention of the web edge area when this has first been brought completely down over the pin.

Claims

C L A I M S
1. Method for the packaging of items or loose materials in foil bags which in a coherent web are fed through a filling station in which the mouths of the bags are held open for filling with the items or materials, after which the bags are closed and separated from the web, by which method the bag web is provisionally and along its mouth edges brought into controlled connection with feeding means which are arranged to secure and feed the opposing bag mouth edges along a conveyor through the filling station, in that in connection with this passage the feeding means force the mouth edges of the bag away from each other for successive opening of the bags in the filling station and, after the filling of the bags, thereafter bring the mouth edges of the bags together again for the closing of the bags, and by which method the opposing mouth edges of the bags are folded out from each other for successive folding-down on and securing to said feeding means, c h a r a c t e r i z e d in that use is made of a bag web with edge strip areas which are prepared with a series of holes or corresponding star perforations, and that the edge strip parts are folded-down and brought into holding engagement with pin parts which stand freely upright on respective carrier chains, in that the hole areas are succes- sively pressed down over said pins.
2. Apparatus for the execution of the method according to claim 1, with means for successive feeding of a mouth edge area of a web of coherent foil bag items to the apparatus, and provided with subsequent means for the folding-out of the edge strip areas of the web for bringing these into engagement against further opposing holding means in the filling station for the holding of the folded-out edge strips of the bag web, c h a r a c t e r i z e d in that the holding parts consist of upwardly projecting holding pins on opposing car- rier chains, which out from the respective sides of the bag web move forwards towards and through the filling station, said holding pins being configured to engage in the perforations in said edge strips of the bag web.
3. Apparatus according to claim 2, c h a r a c t e r i z e d in that pressure means are provided shortly after the folding-out area for the successive pressing down of the folded- out edge strips against the carrier chains.
4. Apparatus according to claim 3, c h a r a c t e r i z e d in that the pressure means consist of a pressure roller which is configured with annular grooves which allow free passage of the holding pins.
5. Packaging web for use with the method according to claim 1, consisting of a coherent series of flat bag items, a mouth edge part of said web being profiled with edge means for holding engagement with gripping and guiding/feeding elements for the respective, opposing free mouth edge areas of the bag items, c h a r a c t e r i z e d in that said profiling consists of a simple extension of the side of the bag in a mouth edge area, and which is provided with a continuous row of perforations .
6. Packaging web according to claim 5, where the web is of the type which is configured with formed bag item areas, and with a closed upper edge with the view to the introduction of a carrier rod on the filling station for conveyance to a station where the closed upper edge is cut open immediately prior to a folding-out of the now freely-cut mouth edge areas of the bag items, c h a r a c t e r i z e d in that at places along the upper edge area of the web, fastening points are formed in between the two sides of the web at such a distance from the closed upper edge that a channel is formed between the relevant row of fastening points and the upper edge for the introduction of said carrier rod, in that said row of perforations is configured in this edge strip area.
PCT/DK1999/000219 1998-04-21 1999-04-21 A method and a system for filling goods in bags from a coherent series of bag members WO1999057017A1 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
PL343472A PL196547B1 (en) 1998-04-21 1999-04-21 A method and a system for filling goods in bags from a coherent series of bag members
AU31386/99A AU753412B2 (en) 1998-04-21 1999-04-21 A method and a system for filling goods in bags from a coherent series of bag members
AT99913128T ATE271999T1 (en) 1998-04-21 1999-04-21 METHOD AND DEVICE FOR FILLING GOODS INTO PACKAGING BAGS, WHICH ARE FEEDED AS A CONTINUOUS BAG TAPE
CA002329740A CA2329740C (en) 1998-04-21 1999-04-21 A method and a system for filling goods in bags from a coherent series of bag members
US09/647,928 US6591586B1 (en) 1998-04-21 1999-04-21 Method and a system for filling goods in bags from a coherent series of bag members
HU0103119A HU226909B1 (en) 1998-04-21 1999-04-21 A method and an equipment for filling bags of a coherent series
JP2000547001A JP4234906B2 (en) 1998-04-21 1999-04-21 Method and apparatus for filling articles into a bag from a series of closely spaced bag members
BR9909800-8A BR9909800A (en) 1998-04-21 1999-04-21 Method and system for filling products in bags from a coherent series of bag members and apparatus for carrying out said method
NZ507571A NZ507571A (en) 1998-04-21 1999-04-21 Bag filling system for filling goods in bags from a coherent series of bag members has bag opener consisting of chain linked pins that co-operate with holes in bag mouth edge
DE69918992T DE69918992T2 (en) 1998-04-21 1999-04-21 METHOD AND DEVICE FOR FILLING GOODS IN PACKAGING BAGS TO BE SUPPLIED AS CONTINUOUS BAGS OF BAGS
EP99913128A EP1087890B1 (en) 1998-04-21 1999-04-21 A method and a system for filling goods in bags from a coherent series of bag members
NO20005252A NO317885B1 (en) 1998-04-21 2000-10-19 Method and apparatus for packing objects in bags from a continuous array of bag elements
HK01106966A HK1037584A1 (en) 1998-04-21 2001-10-04 A method and a system for filling goods in bags from a coherent series of bag members.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0548/98 1998-04-21
DK199800548A DK174262B1 (en) 1998-04-21 1998-04-21 Method and plant for packaging items in foil bags, apparatus for carrying out the method and packaging item for use in the method in the apparatus

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US09647928 A-371-Of-International 1999-04-21
US09/647,928 A-371-Of-International US6591586B1 (en) 1998-04-21 1999-04-21 Method and a system for filling goods in bags from a coherent series of bag members
US10/419,170 Division US7048441B2 (en) 1998-04-21 2003-04-21 Method and system for filling goods in bags from a coherent series of bag members

Publications (2)

Publication Number Publication Date
WO1999057017A1 true WO1999057017A1 (en) 1999-11-11
WO1999057017A8 WO1999057017A8 (en) 2001-02-08

Family

ID=8094794

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1999/000219 WO1999057017A1 (en) 1998-04-21 1999-04-21 A method and a system for filling goods in bags from a coherent series of bag members

Country Status (22)

Country Link
US (2) US6591586B1 (en)
EP (1) EP1087890B1 (en)
JP (1) JP4234906B2 (en)
KR (1) KR100691299B1 (en)
CN (1) CN1117011C (en)
AT (1) ATE271999T1 (en)
AU (1) AU753412B2 (en)
BR (1) BR9909800A (en)
CA (1) CA2329740C (en)
CZ (1) CZ302751B6 (en)
DE (1) DE69918992T2 (en)
DK (2) DK174262B1 (en)
ES (1) ES2226363T3 (en)
HK (1) HK1037584A1 (en)
HU (1) HU226909B1 (en)
NO (1) NO317885B1 (en)
NZ (1) NZ507571A (en)
PL (1) PL196547B1 (en)
PT (1) PT1087890E (en)
RU (1) RU2228888C2 (en)
WO (1) WO1999057017A1 (en)
ZA (1) ZA200006757B (en)

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WO2016000718A1 (en) * 2014-06-30 2016-01-07 Schur Technology A/S Bag web and method for packing a product in film bags by using such a bag web
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US7048441B2 (en) 2006-05-23
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US20030180486A1 (en) 2003-09-25
ATE271999T1 (en) 2004-08-15
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US6591586B1 (en) 2003-07-15
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WO1999057017A8 (en) 2001-02-08

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