WO1996005065A1 - Method and apparatus for applying a coating material to sheets - Google Patents
Method and apparatus for applying a coating material to sheets Download PDFInfo
- Publication number
- WO1996005065A1 WO1996005065A1 PCT/US1995/008751 US9508751W WO9605065A1 WO 1996005065 A1 WO1996005065 A1 WO 1996005065A1 US 9508751 W US9508751 W US 9508751W WO 9605065 A1 WO9605065 A1 WO 9605065A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheet members
- coating material
- intermediate carrier
- path
- overlapped
- Prior art date
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42C—BOOKBINDING
- B42C3/00—Making booklets, pads, or form sets from multiple webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/66—Advancing articles in overlapping streams
- B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0808—Details thereof, e.g. surface characteristics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0821—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by driving means for rollers or work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/14—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a travelling band
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/14—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation involving heating or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/58—Article switches or diverters
- B65H29/62—Article switches or diverters diverting faulty articles from the main streams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
- B65H29/66—Advancing articles in overlapping streams
- B65H29/6654—Advancing articles in overlapping streams changing the overlapping figure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H37/00—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations
- B65H37/02—Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for applying adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H39/00—Associating, collating, or gathering articles or webs
- B65H39/02—Associating,collating or gathering articles from several sources
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H39/00—Associating, collating, or gathering articles or webs
- B65H39/02—Associating,collating or gathering articles from several sources
- B65H39/04—Associating,collating or gathering articles from several sources from piles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
- B05C1/165—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work using a roller or other rotating member which contacts the work along a generating line
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/511—Processing surface of handled material upon transport or guiding thereof, e.g. cleaning
- B65H2301/5114—Processing surface of handled material upon transport or guiding thereof, e.g. cleaning coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/516—Securing handled material to another material
- B65H2301/5162—Coating, applying liquid or layer of any material to material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/517—Drying material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/50—Surface of the elements in contact with the forwarded or guided material
- B65H2404/55—Built-up surface, e.g. arrangement for attaching the surface to the forwarding or guiding element
- B65H2404/552—Built-up surface, e.g. arrangement for attaching the surface to the forwarding or guiding element permanent attachment
- B65H2404/5521—Coating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2406/00—Means using fluid
- B65H2406/30—Suction means
Definitions
- the present invention relates to an apparatus and method for applying coating material, for example pressure-sensitive adhesive, to a plurality of individual sheets, for example sheets of paper.
- coating material for example pressure-sensitive adhesive
- a process for the production of repositionable notes, in which coating materials are applied successively to a paper web, is described in WO-A-87/05315.
- 08/196,490 while having their own utility, are not as effective or efficient as desired in coating some materials onto certain sheets materials. Therefore, an improved method and apparatus for applying a coating material onto sheets is desired.
- the present invention provides a method for applying a water-based coating material to a plurality of sheet members, each sheet member having opposing ends and longitudinal sides and major surfaces.
- the method includes the steps of: (a) arranging the plurality of sheet members in sequential end to end overlapping relation; (b) conveying the overlapped sheet members along a path; (c) providing an intermediate carrier having a transfer surface in contact with the overlapped sheet members along the path, said intermediate carrier being non-reactive to radio frequency radiation; (d) applying the water-based coating material to the transfer surface of the intermediate carrier at a location spaced from the path of the sheet members; (e) exposing the water-based coating material to radio frequency radiation after step (d) and prior to step (f) sufficient to reduce the water content of the coating material to a desired level; and (f) advancing the intermediate carrier to progressively apply the coating material to one of the major surfaces of each of the overlapped sheet members through contact between the intermediate carrier and the sheet members.
- the method further includes, after step (f), the steo of (g) continuously detaching the sheet members coated witht he coating material from the intermediate carrier.
- step (g) includes the step of applying a lower than atmospheric pressure to the sheet members on a side opposite the intermediate carrier to detach the sheet members from the intermediate carrier.
- the sheet members are paper and step (a) includes the step of (h) aligning the machine direction of the papers of the sheet members with the path of the sheet members to attenuate curling and wrinkling of the sheet members.
- the present invention further includes apparatus for applying a water-based coating material to a plurality of sheet members.
- the apparatus includes a conveyor for conveying a plurality of the sheet members in overlapped end to end relation along a path.
- the apparatus further includes a dispenser for controllably dispensing a quantity of the water-based coating material at a desired rate and an intermediate carrier supported adjacent the dispenser.
- the intermediate carrier has a transfer surface extending the path of the sheet members, wherein the transfer surface is adapted for contact with the overlapped sheet members along the path.
- the transfer surface is presented to the dispenser for receiving the coating material at a location spaced from the contact with the overlapped sheet members.
- the intermediate carrier is advancable to transfer the coating material from the dispenser to the overlapped sheet members.
- the intermediate carrier is non-reactive to radio frequency radiation.
- a source of radio frequency radiation is directed towards the water-based coating material on the transfer surface of the intermediate carrier to reduce the water content of the coating material prior to transfer of the coating material from the intermediate carrier to the overlapped sheet members.
- the apparatus includes a conveyor for conveying a plurality of the sheet members in overlapped end to end relation along a path and a die for controllably dispensing a quantity of the water-based coating material at a desired rate.
- An intermediate carrier is provided having a transfer surface extending to said path of the sheet members, wherein the transfer surface is adapted for contact with the overlapped sheet members along the path.
- the transfer surface is presented to the dispenser for receiving the coating material at a location spaced from the path of the overlapped sheet members.
- the intermediate carrier is advancable to transfer the coating material from the dispenser to the overlapped sheet members.
- the apparatus further includes a dryer directed towards the water-based coating material on the transfer surface of the intermediate carrier to reduce the water content of the coating material on the intermediate carrier to a desired level.
- apparatus for use with a system for applying a water-based coating material to a plurality of sheet members.
- the system includes a conveyor for conveying aplurality of the sheet members in overlapped end to end relation along a path, and a dispenser for controllably dispensing a quantity of the water-based coating material at a desired rate, and further includes an intermediate carrier supported adjacent the dispenser, the intermediate carrier having a transfer surface extending to the path of the sheet members, wherein the transfer surface is adapted for contact with the overlapped sheet members along the path.
- the transfer surface is presented to the dispenser for receiving the coating material at a location spaced from the path of the overlapped sheet members.
- the intermediate carrier is advancable to transfer the coating material from the dispenser to the overlapped sheet members.
- This embodiment of the invention includes a detachment roller located adjacent the path of the sheet members and adapted for contact with the sheet members after application of the coating material.
- the detachment roller is connected to a source of vacuum and adapted to apply the vacuum to the sheet members for detaching the sheet members from the intermediate carrier.
- Figure 1 is a schematic side view of apparatus which includes a coating station, in accordance with the invention.
- Figure 2 is a schematic top view of the apparatus shown in Figure 1;
- Figure 3 is adiagrammatic side view of a part of the apparatus shown in Figure 1;
- Figure 4 is an enlarged partial view in the direction of the arrow 4 in Figure 3;
- Figure 4A is a side view of the coating roller and smoothing stripe of Figure 4.
- Figure 5 is a greatly-enlarged view of part of Figure 4.
- Figure 6 is a diagrammatic side view of a modified version of the apparatus shown in Figure 1;
- Figure 7 is a more detailed view of part of the apparatus shown in Figure 6;
- Figure 8 is an enlarged partial view similar to Figure 4 in the direction of the arrow 8 in Figure 6;
- Figure 9 is a cross-section of one of the components of the apparatus shown in FIGs. 1 and 6; and Figure 10 is a photomicrograph illustrating a repositionable adhesive which has been manufally applied to the transfer belt of the apparatus as shown in Figure 1 or
- the system shown schematically in Figures 1 and 2 is particularly adapted for use in the production of repositionalbe notes from sheets of any suitable substrate material (for example: paper, polymeric film including, but not limited to, polypropylene, polyester and polyethylene), or metallic foil and, in particular, is for use int he application to individual sheets of a primer material, a low adhesion backsize (LAB) material, and, subsequently a repositionable adhesive so that the sheets can be sued to form repositionable notes.
- LAB low adhesion backsize
- Zinc-oxide based primers are useful in conjunction iwth the method and apparatus of the present invention, as well as primers described in U.S. Patent Nos. 4,598,112 and 4,822,670, the contents of which are incorporated herein by reference.
- a LAB that may be employed in conjunction with the method and appartus of the present invention is described in co-pending United States patent Application Serial No. 08/040,876, filed March 31, 1994 and commonly assigned to the Assigneee of the present invention, the contents of which are incorporated herein by reference. In the following description, it will be assumed that the sheets (which may be pre-printed) are of paper.
- the system shown in Figure 1 has a paper path entry 1 which receives a succession of paper sheet members (not shown) from any suitable source, for example a stack (not shown).
- the paper may be any suitable paper, such as the paper utilized to construct the Post-it® brand repositionable notes available from Minnesota Mining and Manufacturing Company ("3M") of St. Paul, Minnesota.
- the paper sheets may be provided in any suitable size (including, but not limited to standard sizes such as A2, A4 and 8.5 inches by 11 inches), as well as thickness, but the paper is preferably between 45 grams per square meter (gsm) to 90 gsm, and is most preferably at about 70 gsm.
- such sheets define a leading end edge, a trailing end edge, and longitudinal side edges, as well as opposing major surfaces. From the paper path entry 1, the sheets travel in the direction indicated by the directional arrow 2 through a double coating station 3, a sheet overlapping station 4, a dryer 5, a sheet guiding section 6.
- That pseudo-web of overlapped sheets then moves into the dryer 5 in which water is removed from the primer and LAB coating on the sheets.
- the dried sheets S are then side registered in the guiding section 6 (or alternative guiding section 6' shown in Figures 3 and 6) so that they are aligned with each other before entry into the adhesive coating station 7 of the present invention.
- the sheets may be independently coated with a suitable LAB and primer (orother desired coating) by any suitable process, stored and then subsequently provided to the apparatus of the present invention in overlapped end to end relation.
- Adhesive coating station 7 receives the overlapped sheets S at input 8a along a path 8b to a paper path exit 8c.
- the sheets are overlapped so that the trailing edge of each sheet overlies the leading edge of the next sequential sheet.
- the control and synchronization of the drives of the various stations may be performed by a central electronic control unit *not shown), for example a Siemens PLC 135.
- the paper path 8b is provided by a conveyor (as shown in Figure 1) or the like that receives the pseudo-web of sheets and conveys the sheets from input 8a to exit 8c at a desired rate.
- the coating station 7 applied a coating material, which is preferably a pressure- sensitive adhesive, to the overlapped sheets on their respective exposed portion of the major surfaces which have already been coated with primer.
- the adhesive may be a pressure-sensitive adhesive, and preferably is a repositionable microsphere pressure- sensitive adhesive, for example as described in U.S. Patent No. 4,495,318 to Howard, or U.S. Patent No. 3,691,140 to Silver, and may be a water-based adhesive.
- the adhesive used in conjunction with the present invention may be a microsphere pressure sensitive adhesive (such as is used in the manufacture of Post-it® brand repositionable notes from the Minnesota Mining and Manufacturing Company ("3M”) of St. Paul, Minnesota).
- Such adhesive compositions are described in European Patent No.
- Adhesives for use with the present invention also include film-forming materials known in the art, including those containing organic solvents.
- the adhesive is applied by contacting the sheets with an adhesive-coated intermediate carrier 20.
- the intermediate carrier takes the form of a transfer belt 20 that is an endless belt entrained around rollers 21, at least one of which is driven so that the belt advances in the direction of the arrow 2.
- a transfer belt may be used, including, for example, a cylindrical drum in contact with both the dispenser and the path of the sheet member.
- the intermediate carrier will be hereinafter referred to as a transfer belt, it is to be understood that the present invention is not limited thereto.
- the transfer belt 20 moves (preferably at approximately the same rate of advance of the conveyor 8b conveying the sheets S), it passes a coating mechanism 23, a dryer 24 and a transfer station 25, each of which will be described in greater detail below.
- the adhesive is then dried at least partially (i.e. the moisture content is reduced to a desired level), in the dryer 24 before being transferred to the overlapped sheets at the transfer station 25.
- the moisture content of the water-based adhesie may be approximately 50%-80% prior to drying and 0%-50% after drying.
- substantially all of the moisture is removed during the drying process.
- the coating mechanism 23 applies at least one longitudinal stripe of pressure- sensitive adhesive to the transfer surface 20b of the transfer belt.
- One embodiment of the coating mechanism 23 is shown in greater detail in Figure 3.
- the adhesive is coated onto the belt 20 by a reverse rotating gravure roller 28 which extends across the width of the belt and contacts the belt at the coating station 7.
- At least one gravure ring 29 ( Figure 4) of cells or cavities is formed in the surface of the roller, each ring extending around the roller at the desired location of an adhesive stripe on the belt.
- three gravure rings 29 are shown, providing three longitudinal adhesie stripes 36 on the belt 20, but that is not essential.
- each cell generally has the form of an inverted truncated pyramid.
- the particular gravure pattern shown in Figure 5 is not essential and can be changed, if found advantageous, to alter the distribution of adhesive within the stripes 36.
- the adhesive which is to be applied to the belt 20 by the roller 28 is supplied by a pump 31 from a tank 32 to a trough 33 at the coating mechanism 23.
- a metering roller 34 dips into the adhesive in the trough and, as it rotates, the metering roller picks up adhesive which it then transfers to the reverse rotating gravure roller 28 and, in particular, to the cells in the ring(s) 29.
- One or more doctor blades engage the roller 28 to remove any excess adhesive and ensure that all the adhesive on the roller is contained only within the cells 30, thereby ensuring that the adhesive will be transferred in the stripes 36 when the roller contacts the belt 20.
- the adhesive coating process is a direct gravure coating process. If the roller 28 rotates in an opposite rotational direction as the movement of the belt 20, the coating process is a reverse gravure coating process.
- the process shown and described herein shall be a reverse gravure process.
- a smoothing strip 29a is positioned for sliding contact with the adhesive on the gravure ring as the gravure ring rotates to apply the adhesive. It has been found that in some applications, the distribution of the adhesive microspheres is enhanced. That is, when the smoothed adhesive is coated on the paper sheet S, the exposed surface of the adhesive is more uniform and exhibits more controllable and uniform adhesive strengths.
- the strip 29a is a flexible, polymeric stripe, and most specifically, the strip is a strip of polyester approximately 0.001 1 inches in thickness.
- the adhesive can be transfer coated across the whole width of the belt rather than in discrete stripes.
- the gravure roller 28 rotates at approximately the same speed as the belt 20 and in the same direction (i.e. clockwise as seen in Figure 3) so that the coating mechanism functions as a reverse roll coating system, but that is not essential.
- the transfer belt 20 includes a base layer 20a that is preferably a commercially available fiberglass fabric belt, such as is available for J.P. Steven, North Carolina, and ispreferably 0.004 inches in thickness.
- the belt base layer 20a is coated on front and back major surfaces 20b, 20c with 0.003 inch thick layers 20d, 20e (for a total thickness for the belt 20 of approximately 0.010 inches) of a dispersion of a silicone rubber solution, G.E. SE-100 available from Silicone Products Division of General Electric Co. of Waterford, New York at a 6% solids with 78% benzoyl peroxide in water as a catalyst.
- a silicone rubber solution G.E. SE-100 available from Silicone Products Division of General Electric Co. of Waterford, New York at a 6% solids with 78% benzoyl peroxide in water as a catalyst.
- Both coatings 20d, 20e are knife coated and oven dried at 360°F, 60 yards/hour.
- the silicone layers enhance release of the adhesive from the belt to the sheets S.
- the outermost surfaces 20g, 20h of the silicone layers 20d, 20e form the transfer surfaces for receipt of the adhesive.
- the transfer surfaces are preferably textured or vonvoluted.
- the textured surface takes the form of a pattern of indentations that impose a complementary pattern in the adhesive stripes transferred from the belt to the sheets of papers at the transfer nip 25 A.
- a preferred form of the pattern of indentations is shown enlarged in Figure 10 and generally comprises an array of indentations 20j.
- the indentations 20j overly corresponding indentations 20g in the surfaces 20b, 20c of the base layer 20a.
- the indentations 20g in the base layer may be formed during the process of weaving the fiberglass layer.
- the pattern of indentations 20g may be embossed or otherwise imposed on the surface of the backing layer.
- each indentation 20j receives one or more microspheres from the gravure roller.
- the indentations 20j have a width of from 40 microns to 200 microns, and most preferably, a width of appoximately 100 microns, and a depth of from 50 microns to 100 microns.
- the indentations 20j described above are spaced approximately 10-30 microns in a rectangular array. The adhesive tends to "wet out" on the surfaces 20h, 20i due to the silicone layers 20d, 20e and retain the microspheres in the indentations 20g. Consequently, the adhesive is transferred to the sheets while maintaining the pattern shown in Figure 10.
- the layers 20d, 20e be of the same thickness, and that both major surfaces 20h, 20i include the indentations 20j, so that, if necessary, the transfer belt 20 may be reversed to present surface 20c for increased usage of the belt.
- a transfer belt 20 may employed that includes a silicone layer and indentations on only one major surface, if desired, such as for cost reasons.
- the pattern in the adhesive stripes is further influenced by the form of the gravure pattern and the latter should be chosen with a view to enhancing the even distribution of the microspheres.
- the sheets are paper, they are preferably fed through the apparatus with what is known in the art as the "machine direction" of the paper aligned with the machine process direction (i.e. generally parallel to directional arrow 2 along paper path 8b). In that way, any tendency for the sheets to curl or wrinkle can be further attenuated. Papers of different weights and textures can be used if desired. Typically, sheets of size A2 and weight 70 gsm would be used, but the apparatus is readily adaptable to handle sheets of size A4 and weights within the range 70 gsm to 90 gsm and could also handle sheet S weights as low as 45 gsm.
- Paper is commonly formed by accumulating paper fibers on a wire mesh or screen and compressing the accumulated fibers between the screen and a "felt" or cloth layer opposite the screen layer. This produces paper having a "wire” side and a “felt” side. It has also been found advantageous to convey the sheets S through the apparatus of the present invention with the "wire” side presented for coating of the release material and the "felt: side presented for coating of the primer and ultimately for coating of the adhesive.
- the belt 20 with the adhesive stripes 36 then passes through the dryer 24 in which the adhesive stripes are dried at least partially (i.e. ranging from 0%-50%). This is done to improve the adherence of the adhesive to the sheets.
- the dryer 24 is preferably a radio-frequency dryer, for example a particularly adapted version of the Model No. SPW 12-73 manufactured by Proctor Strayfield Ltd. of Berkshire, England operated, typically, at about 27 Mhz, or alternatively, at about 30 Mhz.
- the dryer is about 2.5 m long in the direction of travel of the belt and has an exhaust 50 through which the interior of the dryer is vented with the aid of a fan 51.
- the dryer is provided with a control unit (not shown) which adjusts the power of the dryer in accordance with the line speed of the coating apparatus. That control unit may, for example, be a Siemens PLC 55-95U interconnected with the central electronic control unit of the whole apparatus.
- a radio-frequency dryer requires that the material of the transfer belt 20 be non-reactive (i.e. transparent or otherwise not affected by the radio frequency radiation to a degree that adversely affects the operation of the method and apparatus of the present invention) to radio frequency radiation, such as the embodiment of the transfer belt described hereinabove and shown in Figures 9 and 10.
- This arrangement offers the advantage that the adhesive is dried without the transfer belt being significantly heated, thereby eliminating any heat transfer from the belt to the coating mechanism 23 and then to the adhesive which could cause the adhesive to coagulate before it has been applied to the belt 20.
- a radio-frequency dryer also offers the advantages of comparative simplicity and lower energy consumption. Further, the transfer belt 20 requires no prolonged pre-heating to a particular operating temperature and the adhesive is released readily from the belt for transfer to the sheets at the coating station.
- transfer belt can be used that are incompatible with a radio frequency dryer (i.e. are not transparent or inert to radio frequency radiation).
- the transfer belt may comprise a metal substrate with a coating of silicone rubber on each side.
- Other types of dryers that may be employed in the present invention, for example, include an infra-red heater, or a hot air dryer. However, if the dryer causes the belt 20 and then the coating mechanism 23 to become heated it may be necessary to cool the adhesive and the transfer belt to reduce the risk of the adhesive coagulating.
- the adhesive-coated belt 20 passes through a transfer nip 25 A comprising a transfer roller 37 and a counter- pressure or nip roller 38.
- the overlapped sheets from the guiding section 6 (with an alternative guiding section 6' shown in Figure 3 and also in Figure 6) of the apparatus are also directed through the transfer nip 25A and are supported by the counter- pressure roller 38 against the transfer roller 37 and consequently against the belt 20 so that adhesive is transferred from the belt to the sheets.
- the sheets are detached from the belt 20, such as by a vacuum roller 39 and are carried away from the transfer nip on a vacuum conveyor 40 to the paper path exit 8c.
- vacuum refers to any less than atmospheric pressure that, when applied to the sheet members on a major surface opposite the transfer belt, is sufficient to detach the sheets from the transfer belt.
- other means including mechanical grippers, amy be employed to detach the sheets from the transfer belt, if desired. Once detached, the sheets may then be stacked and trimmed to form pads of repositionable notes.
- the detachment system may be of any suitable type.
- the vacuum conveyor 40 may be a metallic belt which passes around, and forms a single complete assembly with the vacuum roller 39 as in the delaminating and transfer system available from Honeycomb Systems, Valmet S.a.r.l. of Mulhouse, France.
- the vacuum roller 39 which removes sheets from the belt 20 may be completely separate from the vacuum conveyor 40, as illustrated in Figures 6 and 7 described below.
- the vacuum conveyor 40 extends at an angle away from the transfer belt 20.
- a modified version 7' of the appartus shown in Figure 1 is shown in Figure 6.
- Corresponding parts of the apparatus carry the same reference numerals as in Figure 1.
- the double coating station 3 as shown in Figure 6 differs slights from the shown in Figure 1 in that the lower station 12 is located slightly downstream of the upper station 11 so that the primer and LAB materials will not be applied absolutely simultaneously.
- the adhesive coating station 7' shown in Figure 6, and in greater detail in Figure 7, is generally similar to that shown in Figure 1, except that the coating mechanism 23 uses at least one coating die 42 to apply the pressure-sensitive adhesive to the belt 20 instead of the gravure roller 28.
- Each coating die has a die slot (not shown) directed towards the belt, through which a stripe 44 ( Figure 8) of adhesive is applied directly to the belt.
- the dies are spaced across the belt at the desired locations of the adhesive stripes.
- Each die 42 has a respective supply line 45, including a respective pump 46 of any suitable type and a filter 47 through which adhesive is supplied to the die from a reservoir 48.
- the rate at which adhesive is coated onto the belt 20 is readily adjusted by changing the speed of the pumps 46 which are driven under the control of the central electronic control unit of the apparatus in dependence on the line speed of the apparatus.
- Die coating of the adhesive stripes as illustrated in Figures 6 and 7, enables the location of the adhesive stripes on the belt 20, and hence on the paper sheets to be more easily adjusted and increases the flexibility of the coating process.
- a single die may be provided with a slot that is divided to apply the adhesive at the desired locations across the width of the transfer roll.
- the vacuum roller 39 which removes sheets from the belt
- the vacuum roller 39 with or without the vacuum conveyor 40, may be independently employed with any apparatus for coating a coating material onto a pseudo web of overlapped sheets, including, for instance, the aforementioned system disclosed in co-pending United States Patent Application Serial No. 08/196,490.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69528464A DE69528464D1 (en) | 1994-08-17 | 1995-07-13 | METHOD AND DEVICE FOR APPLYING A COATING ON BOWS |
EP95926266A EP0776274B9 (en) | 1994-08-17 | 1995-07-13 | Method and apparatus for applying a coating material to sheets |
KR1019970700927A KR970704584A (en) | 1994-08-17 | 1995-07-13 | METHOD AND APPARATUS FOR APPARATING A COATING MATERIAL TO SHEETS - Patent application |
AU30079/95A AU699125B2 (en) | 1994-08-17 | 1995-07-13 | Method and apparatus for applying a coating material to sheets |
DE69528464T DE69528464T4 (en) | 1994-08-17 | 1995-07-13 | METHOD AND DEVICE FOR APPLYING A COATING ON BOWS |
JP8507314A JPH10504239A (en) | 1994-08-17 | 1995-07-13 | Method and apparatus for applying coating material to sheet |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29161094A | 1994-08-17 | 1994-08-17 | |
US08/291,610 | 1994-08-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996005065A1 true WO1996005065A1 (en) | 1996-02-22 |
Family
ID=23121019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/008751 WO1996005065A1 (en) | 1994-08-17 | 1995-07-13 | Method and apparatus for applying a coating material to sheets |
Country Status (6)
Country | Link |
---|---|
EP (4) | EP1531061A3 (en) |
JP (1) | JPH10504239A (en) |
KR (1) | KR970704584A (en) |
AU (2) | AU699125B2 (en) |
DE (4) | DE69534951T2 (en) |
WO (1) | WO1996005065A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997029985A1 (en) * | 1996-02-16 | 1997-08-21 | Minnesota Mining And Manufacturing Company | Improved apparatus and method for applying coating materials to individual sheet members |
US6406244B1 (en) | 1998-07-09 | 2002-06-18 | Frederic P. A. Le Riche | Stack of sheets with repositionable adhesive alternating between opposite edges and containing one or more sheets different from other sheets |
US6500260B2 (en) | 1993-02-19 | 2002-12-31 | Minnesota Mining & Mfg | Apparatus for applying a coating material to sheets |
KR100496775B1 (en) * | 1996-08-27 | 2005-09-30 | 빈드묄르 운트 휠셔 | Adhesive Coating Device |
WO2009089586A1 (en) * | 2008-01-17 | 2009-07-23 | Ra Corporation Pty Ltd | Notepad forming method and apparatus therefor |
CN111013924A (en) * | 2019-12-10 | 2020-04-17 | 安徽骄阳软门有限责任公司 | Antistatic gauze and manufacturing equipment thereof |
WO2020156785A1 (en) * | 2019-01-29 | 2020-08-06 | Sidel Participations | Glue application device for a labeling unit |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1997608A3 (en) | 2007-05-16 | 2009-05-27 | Entex Rust & Mitschke GmbH | Method for machining products to be degassed |
GB2455124B (en) * | 2007-11-29 | 2010-07-14 | Finite Engineering Solutions | An adhesive dispensing device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0163127A1 (en) * | 1984-04-30 | 1985-12-04 | Banson Nominees Pty. Ltd. | A method and apparatus for forming pads of sheet items |
EP0258353A1 (en) * | 1986-02-26 | 1988-03-09 | PAGENDARM, Erich | Article with adhesive coating and process for its production |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE24906E (en) | 1955-11-18 | 1960-12-13 | Pressure-sensitive adhesive sheet material | |
US3407084A (en) * | 1964-10-01 | 1968-10-22 | Us Envelope Co | Coating method and apparatus |
US3691140A (en) | 1970-03-09 | 1972-09-12 | Spencer Ferguson Silver | Acrylate copolymer microspheres |
US4328064A (en) * | 1980-03-31 | 1982-05-04 | Miller Jr Rex B | Apparatus for shingling tickets |
US4495318A (en) | 1984-03-21 | 1985-01-22 | International Cube Corporation | Low tack microsphere glue |
US4537650A (en) * | 1984-05-01 | 1985-08-27 | Xerox Corporation | Sheet binding apparatus |
US4598112A (en) | 1984-09-14 | 1986-07-01 | International Cube Corp. | Low tack cationic microsphere glue |
GB2166717A (en) * | 1984-11-13 | 1986-05-14 | Rodwell Htb Limited | Feeding stream of sheets to treatment station |
US4822670A (en) | 1985-12-18 | 1989-04-18 | Nichiban Company Limited | Removable adhesive sheet or tape |
CH680851A5 (en) * | 1988-01-08 | 1992-11-30 | Ferag Ag | |
DE3802797A1 (en) * | 1988-01-30 | 1989-08-10 | Guenther Dr Schwarz | METHOD AND DEVICE FOR PRODUCING FAST-HARDENING COVERINGS ON CARRIER BOLTS |
US5045569A (en) | 1988-11-30 | 1991-09-03 | Minnesota Mining And Manufacturing Company | Hollow acrylate polymer microspheres |
EP0439941B1 (en) | 1990-01-22 | 1997-01-29 | Minnesota Mining And Manufacturing Company | Aqueous, repositionable, high peel strength pressure sensitive adhesives |
DE4305081C2 (en) * | 1993-02-19 | 1996-08-01 | Minnesota Mining & Mfg | Method and device for applying pressure sensitive adhesive to sheets of paper or the like material |
GB9306009D0 (en) * | 1993-03-23 | 1993-05-12 | Ncr Int Inc | Sheet handing apparatus |
-
1995
- 1995-07-13 EP EP05000375A patent/EP1531061A3/en not_active Withdrawn
- 1995-07-13 EP EP02076789A patent/EP1234682B1/en not_active Expired - Lifetime
- 1995-07-13 DE DE69534951T patent/DE69534951T2/en not_active Expired - Lifetime
- 1995-07-13 AU AU30079/95A patent/AU699125B2/en not_active Ceased
- 1995-07-13 WO PCT/US1995/008751 patent/WO1996005065A1/en active IP Right Grant
- 1995-07-13 KR KR1019970700927A patent/KR970704584A/en active IP Right Grant
- 1995-07-13 DE DE69534794T patent/DE69534794T2/en not_active Expired - Lifetime
- 1995-07-13 EP EP02076790A patent/EP1234683B1/en not_active Expired - Lifetime
- 1995-07-13 JP JP8507314A patent/JPH10504239A/en not_active Ceased
- 1995-07-13 EP EP95926266A patent/EP0776274B9/en not_active Expired - Lifetime
- 1995-07-13 DE DE69528464A patent/DE69528464D1/en not_active Expired - Lifetime
- 1995-07-13 DE DE69528464T patent/DE69528464T4/en not_active Expired - Lifetime
-
1998
- 1998-03-19 AU AU59424/98A patent/AU5942498A/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0163127A1 (en) * | 1984-04-30 | 1985-12-04 | Banson Nominees Pty. Ltd. | A method and apparatus for forming pads of sheet items |
EP0258353A1 (en) * | 1986-02-26 | 1988-03-09 | PAGENDARM, Erich | Article with adhesive coating and process for its production |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6500260B2 (en) | 1993-02-19 | 2002-12-31 | Minnesota Mining & Mfg | Apparatus for applying a coating material to sheets |
WO1997029985A1 (en) * | 1996-02-16 | 1997-08-21 | Minnesota Mining And Manufacturing Company | Improved apparatus and method for applying coating materials to individual sheet members |
KR100496775B1 (en) * | 1996-08-27 | 2005-09-30 | 빈드묄르 운트 휠셔 | Adhesive Coating Device |
US6669992B2 (en) | 1997-07-11 | 2003-12-30 | 3M Innovative Properties Company | Stack of sheets with repositionable adhesive alternating between opposite edges and containing one of more sheets different from other sheets |
US6406244B1 (en) | 1998-07-09 | 2002-06-18 | Frederic P. A. Le Riche | Stack of sheets with repositionable adhesive alternating between opposite edges and containing one or more sheets different from other sheets |
WO2009089586A1 (en) * | 2008-01-17 | 2009-07-23 | Ra Corporation Pty Ltd | Notepad forming method and apparatus therefor |
AU2009204643B2 (en) * | 2008-01-17 | 2013-04-18 | Ra Corporation Pty Ltd | Notepad forming method and apparatus therefor |
US8702085B2 (en) | 2008-01-17 | 2014-04-22 | Ra Corporation Pty Ltd | Notepad forming method and apparatus therefor |
WO2020156785A1 (en) * | 2019-01-29 | 2020-08-06 | Sidel Participations | Glue application device for a labeling unit |
CN111013924A (en) * | 2019-12-10 | 2020-04-17 | 安徽骄阳软门有限责任公司 | Antistatic gauze and manufacturing equipment thereof |
Also Published As
Publication number | Publication date |
---|---|
EP1234682B1 (en) | 2006-02-22 |
AU3007995A (en) | 1996-03-07 |
EP1234682A2 (en) | 2002-08-28 |
EP1234682A3 (en) | 2002-10-02 |
DE69534951D1 (en) | 2006-05-24 |
KR970704584A (en) | 1997-09-06 |
EP1531061A2 (en) | 2005-05-18 |
EP1234683A2 (en) | 2002-08-28 |
EP1234683B1 (en) | 2006-04-19 |
DE69534794D1 (en) | 2006-04-27 |
EP1531061A3 (en) | 2006-11-22 |
AU5942498A (en) | 1998-06-04 |
DE69528464T2 (en) | 2003-08-07 |
AU699125B2 (en) | 1998-11-26 |
DE69534951T2 (en) | 2006-11-30 |
EP0776274B9 (en) | 2006-03-15 |
DE69534794T2 (en) | 2006-12-14 |
JPH10504239A (en) | 1998-04-28 |
EP1234683A3 (en) | 2002-10-02 |
EP0776274A1 (en) | 1997-06-04 |
DE69528464D1 (en) | 2002-11-07 |
EP0776274B1 (en) | 2002-10-02 |
DE69528464T4 (en) | 2006-10-19 |
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