WO1999067027A1 - Device and method for application of a gluing system - Google Patents

Device and method for application of a gluing system Download PDF

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Publication number
WO1999067027A1
WO1999067027A1 PCT/SE1999/001083 SE9901083W WO9967027A1 WO 1999067027 A1 WO1999067027 A1 WO 1999067027A1 SE 9901083 W SE9901083 W SE 9901083W WO 9967027 A1 WO9967027 A1 WO 9967027A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
strands
hollow members
orifices
hollow
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.)
Ceased
Application number
PCT/SE1999/001083
Other languages
French (fr)
Inventor
Lennart Vesterlund
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.)
Akzo Nobel NV
Casco Products AB
Original Assignee
Akzo Nobel NV
Casco Products AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27577850&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1999067027(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from SE9802223A external-priority patent/SE9802223D0/en
Priority claimed from SE9802224A external-priority patent/SE9802224D0/en
Priority claimed from SE9802222A external-priority patent/SE9802222D0/en
Priority claimed from SE9803551A external-priority patent/SE9803551D0/en
Priority claimed from SE9803549A external-priority patent/SE9803549D0/en
Priority claimed from SE9803550A external-priority patent/SE9803550D0/en
Priority to DK99931715T priority Critical patent/DK1089827T3/en
Priority to BR9911452-6A priority patent/BR9911452A/en
Priority to SI9930117T priority patent/SI1089827T1/en
Priority to AU48151/99A priority patent/AU746915B2/en
Priority to CA002335374A priority patent/CA2335374C/en
Priority to ES99931715T priority patent/ES2181454T3/en
Priority to JP2000555703A priority patent/JP3568478B2/en
Priority to US09/700,777 priority patent/US6428845B1/en
Priority to PL344786A priority patent/PL192752B1/en
Priority to EP99931715A priority patent/EP1089827B1/en
Priority to EEP200000747A priority patent/EE04804B1/en
Priority to DE1089827T priority patent/DE1089827T1/en
Application filed by Akzo Nobel NV, Casco Products AB filed Critical Akzo Nobel NV
Priority to AT99931715T priority patent/ATE222810T1/en
Priority to NZ508484A priority patent/NZ508484A/en
Priority to SK1947-2000A priority patent/SK285998B6/en
Priority to DE69902664T priority patent/DE69902664T2/en
Publication of WO1999067027A1 publication Critical patent/WO1999067027A1/en
Priority to NO20006512A priority patent/NO20006512L/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/10—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an adhesive surface
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/027—Coating heads with several outlets, e.g. aligned transversally to the moving direction of a web to be coated
    • 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
    • B05C9/06—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 two different liquids or other fluent materials, or the same liquid or other fluent material twice, to the same side of the work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/30—Processes for applying liquids or other fluent materials performed by gravity only, i.e. flow coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/34—Applying different liquids or other fluent materials simultaneously
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/36—Successively applying liquids or other fluent materials, e.g. without intermediate treatment
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/04—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving separate application of adhesive ingredients to the different surfaces to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/08—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers using foamed adhesives
    • 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
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/005—Curtain coaters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
    • C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2461/00—Presence of condensation polymers of aldehydes or ketones
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/582—Recycling of unreacted starting or intermediate materials

Definitions

  • Sequential application in the form of strands of resin and hardener components by means of an application device comprising two independently mounted tubes, cf. SE- 373 525, having a row of orifices through which the resin and hardener components are separately spread after each other onto the substrate, has been used in the prior art in the case of application of phenolic resorcinol gluing systems.
  • This type of application results in more or less random distribution of the strands of one component in relation to the strands of the other component onto the substrate.
  • the present invention accordingly provides a device, and a method using the device, by which the above-mentioned problems are overcome.
  • the device according to the invention is defined in the appended claims. It comprises a unit of at least two hollow members, at least one member for each component, provided with a number of orifices, from which orifices in each member designed to apply the respective component onto a substrate below the hollow members to form strands, the hollow members being positioned above the plane of application, wherein the unit comprises means for adjusting the position of the orifices in at least one of the hollow members in relation to the position of the orifices in the other hollow member(s).
  • the method according to the invention is defined in the appended claims. It comprises use of the above-described device for applying a gluing system of at least two components, such as a resin component and a hardener component, in the form of strands, onto a substrate.
  • the substrate is suitable fed under the hollow members through the device.
  • the later applied strands may overlap, do not overlap, or do not contact, respectively, the corresponding previously applied strands of the other components.
  • the strands are designated by the reference numeral 10, and the letters a, b, c, and d, respectively, are used to denote details pertaining to the hollow member 1 , 2, 3, and 4, respectively.
  • Each hollow member is provided with an inlet 9, through which the respective component is supplied.
  • the device comprises at least two hollow members having a multitude of small holes 6, the members being fixed to each other in parallel by means of fixation means, forming a unit.
  • the longitudinal axes of the hollow members are placed substantially perpendicularly to the machine direction of the device with spacing between said members in said direction. The sideways distance(s) between said members can be adjusted.
  • the small holes 6 of the hollow members are facing the substrate 8.
  • Said holes constitute orifices for resin and hardener component, respectively, through which the components flow during application.
  • At least one hollow member for each of the two above-mentioned components is provided in the device. Additional hollow members for application of the same or other additional desired components can also be provided in the device.
  • each member can be at a distance of 2-16 mm, suitably 2-5 mm from each other, depending on the specific substrate to which glue is to be applied.
  • the diameter of said holes can range from 1-10 mm, suitably 2-5 mm.
  • a suitable substrate can, for instance, be a wooden lamella.
  • Other substrates that can be used can be made of, for example, metal, plastic, or composite material. If desired, by selection of the proper distances and flow rates, the strands of any given component can be made to coalesce to an essentially coherent mass.
  • Suitable amounts of the components to be applied are in the range of 200-500 g/m2, depending, interalia, on the feeding rate. At feeding rates below 30 m/min difficulties in dosage are likely to be encountered due to discontinuous strands emanating from the orifices (dripping).
  • a suitable feeding speed of the substrates is up to 300 m/min, more suitably 30-250 m/min, and preferably 60-200 m/min.
  • the holes 6 of the respective hollow members, from which the respective components are applied to the substrate, can be formed directly in the hollow member and/or in a nozzle plate as represented by reference numeral 5.
  • a nozzle plate as represented by reference numeral 5.
  • two or more of the members can have a common nozzle plate 5, as shown in Figures 1, 2, and 3.
  • a common nozzle plate is suitable when the centre to centre distances between the members are relatively short, e.g. 5-40 mm.
  • the common nozzle plate 5 can simply be replaced with another nozzle plate 5 having orifices at suitable positions.
  • Fig. 5 the orifices of one hollow member in relation to the orifices of the other hollow member, within a common nozzle plate 5 are shown, wherein each of the orifices 6a in one of the hollow members are aligned in the machine direction with the corresponding orifices 6b of the other hollow member.
  • Fig. 7 also shows the orifices of two hollow members being aligned in relation to each other in the cross machine direction, with the exception that the hollow members here do not have a common nozzle plate and the position of the hollow members is adjusted by the moving means 11 in the cross machine direction.
  • the embodiments shown in these figures enable application of a resin and a hardener onto a substrate, wherein the later applied strands of one component are overlapping the previously applied strands of the other component.
  • Fig. 6 shows an embodiment with two hollow members with a common nozzle plate 5, wherein each of the orifices 6a in one hollow member are parallel displaced in the machine direction in relation to the corresponding orifices 6b of the other hollow member.
  • Fig. 8 shows an embodiment with two hollow members without a common nozzle plate, wherein one hollow member is moved in the cross machine direction, in relation to the other hollow member so that each of the orifices 6a of one hollow member are parallel displaced in the machine direction, in relation to the corresponding orifices 6b of the other hollow member.
  • the strands of the different components can be applied in relation to each other in various suitable ways.
  • the later applied strands of one component overlap the corresponding strands of the previously applied component(s), or they are applied adjacent to each other so that they are in essentially contact with each other.
  • the later applied strands of one component are applied with a certain distance 13 in relation to the corresponding strands of the previously applied component(s).
  • a distance of about 4-8 mm between the strands of the different components of the gluing system, such as the hardener and the resin is suitable, for assembly times of about 15-60 min a distance of about 2-4 mm is preferred, and for assembly times of about up to 15 min overlapping of the strands or essentially contact between them is preferred.
  • the strands of resin and hardener components are applied uniformly after each other so that essentially continuous contact of each strand of one component with each corresponding strand of the other component(s) is achieved throughout the length of the strands. That is, the later applied strands of one component will normally substantially overlap the corresponding strands of the previously applied component(s).
  • a relatively smaller strand normally the hardener component, can be brought to lie substantially within the width of a larger strand, e.g., on top of, or under a larger strand, depending on the order of application.
  • Said guiding means which is held in contact with the contour of the substrate, i.e., the side edges of the substrate in the direction of motion, is connected to the unit, which in turn is mounted movably in the cross-direction of the device, whereby a contour-following movement of the unit comprising the hollow members during the application of the components is established.
  • the substrates used together with this embodiment can be somewhat curved or twisted while the above-described advantages still are obtained.
  • the holes 6 of the hollow members 1 ,2,3,4 can be covered from inside by means of a rod-shaped device (not shown), operated from outside, that can be brought into said member from the end thereof, parallel to the longitudinal axis thereof, and locked in the desired position in order to adjust the number of the open holes 6 to the width of the specific substrate 8.
  • a rod-shaped device (not shown), operated from outside, that can be brought into said member from the end thereof, parallel to the longitudinal axis thereof, and locked in the desired position in order to adjust the number of the open holes 6 to the width of the specific substrate 8.
  • the way of regulating the width used of the hollow members to the width of the substrate is not critical and can be accomplished in any suitable manner.
  • the device according to the invention can have a start stop and/or a circulating system.
  • the distance between the centres of the hollow members 1 ,2,3,4 is dependent on the method of feeding the components to the members, a few examples of which will be described hereinafter, and the number of members used, and can range from about 5 to 900 mm.
  • a suitable distance from the centre of the one outer hollow member to the centre of the other outer member is in the range of about from 15 to 900 mm.
  • the distance from centre to centre is from about 5 to 900 mm, a suitable range being 40 to 300 mm.
  • the total distance should suitably not exceed about 900 mm.
  • the components are continuously running from the respective members.
  • a larger distance such as about 300 to 900 mm, is preferred in order to prevent any splatter of the first component from the front of a lamella to reach in to the collecting tray of the other component as mentioned above.
  • there are two different types of pumping in order to feed the components to the hollow members firstly, a simple type, and secondly, a more elaborate one.
  • the second type is based on continuous circulation by means of pumping of the components in different circulation lines, from which lines the respective components are drained to the hollow members by means of 3-way valves. This latter method makes the start and stop of the application of the components more instant, due to the continuous pressure maintained in the circulating lines.
  • the amount of the components not falling onto the substrate in the start/stop operation mode will in either case constitute the glue waste. In the former type said waste will typically be of the order 2-4 %, and in the latter even less.
  • the distance between the centres of adjacent hollow members can be reduced to 5 mm, whereby the equipment can be made relatively small and easy to adjust to already existing manufacturing lines.
  • the short distance will also improve the accuracy of the application according to the present invention.
  • the start/stop operation is normally preferred, since any undesired emissions from the gluing system components in the respective collecting trays are reduced. Also, by not having the components continuously running from the hollow members, any such emissions are reduced.
  • the order of application of the resin and hardener components, respectively, is not critical and can be chosen as appropriate depending on the substrate, the specific components used, the subsequent processing, and the desired characteristics of the ultimate product.
  • hardeners comprising aggressive acids could be used since they can be prevented from getting into direct contact with the substrate. For example, this can be achieved by the application of the sequence of resin-hardener-resin, thereby securing the contact of the substrate with only the resin component, even when gluing said substrate together with another piece of substrate not provided with glue.
  • a component comprising a substance which desirably should be prevented from being emitted into the atmosphere, or into a specific surrounding environment for any reason, such as for example a volatile acid in the hardener component
  • such component can suitably be applied followed by at least one other component covering the component comprising the substance to be prevented from being emitted.
  • a suitable order of application would be the hardener component first, which thereafter is covered with the resin component.
  • gluing systems which can be used together with the device according to the present invention are urea-formaldehyde, melamine-urea-formaldehyde, phenol-resorcinol-formaldehyde, emulsion polymer isocyanate, two component polyvinyl acetate, and two component polyurethane gluing systems.
  • the device according to the present invention can, for example, advantageously be used in a method of separate application of resin and hardener components of an amino resin gluing system wherein both component are applied in the form of strands in optional order of application, wherein the first applied component optionally can coalesce to form an essentially continuous layer thereof, onto which the other component is applied.
  • Another method wherein the present device suitably can be used is a method comprising separate application of resin and hardener components of an expandable gluing system in the form of strands, wherein said hardener component is acidic, and the resin component comprises one or more gas generating substances capable of forming a gas when contacted with said hardener component.
  • the gas generating substance can be any carbonate or hydrogen carbonate that will generate CO 2 upon contact with an acid. Suitable examples are, for instance, sodium hydrogen carbonate, calcium carbonate, sodium carbonate, ammonium carbonate, ammonium hydrogen carbonate, magnesium carbonate, or a mixture thereof.

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  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Coating Apparatus (AREA)
  • Reinforced Plastic Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Laminated Bodies (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Saccharide Compounds (AREA)
  • Epoxy Resins (AREA)
  • Seal Device For Vehicle (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Pens And Brushes (AREA)
  • Compounds Of Unknown Constitution (AREA)

Abstract

A device for application of a gluing system of at least two components, such as a resin component and a hardener component comprising a unit of at least two hollow members (1, 2, 3, 4), at least one member for each component, provided with a number of orifices (6, 6a, 6b) in each member designed to apply the respective component onto a substrate (8) below the hollow members to form strands (10a, 10b, 10c, 10d), the hollow members being positioned above the plane of application, wherein the unit comprises means for adjusting the position of the orifices (6a) in at least one of the hollow members in relation to the position of the orifices (6b) in the other hollow member(s). The invention also relates to a method for applying a gluing system of at least two components, such as a resin component and a hardener component, in the form of strands (10a, 10b, 10c, 10d), using the device.

Description

DEVICE AND METHOD FOR APPLICATION OF A GLUING SYSTEM
The present invention relates to a device for separate application of a gluing system comprising at least two components, such as a resin component and a hardener component, onto a substrate, and an application method wherein said device is used. Separate application of the components of a gluing system, such as resin and hardener components, is known in the art of gluing and offers the advantages of providing the components applied onto the substrate in a not thoroughly mixed condition. The actual mixing of the components applied is obtained in the further processing of the substrate, such as the pressing of two or more such substrates together, allowing for a longer period of time to lapse between application and pressing, without an undesired extent of curing occurring during said period. Also, since the components are separated in the application device the pot life of the gluing system will be markedly extended, and the risk of clogging will be brought to a minimum.
Sequential application in the form of strands of resin and hardener components by means of an application device comprising two independently mounted tubes, cf. SE- 373 525, having a row of orifices through which the resin and hardener components are separately spread after each other onto the substrate, has been used in the prior art in the case of application of phenolic resorcinol gluing systems. This type of application results in more or less random distribution of the strands of one component in relation to the strands of the other component onto the substrate.
Another method of applying resin and hardener components is a special type of curtain application, for example, as that described in EP 286 939 B1. However, in this method a large surface area of the components are exposed to the surrounding atmosphere, leading to increased evaporation of the water contained in the components of the gluing system. Accordingly, this incurs a reduced period of time from the application of the components to application of pressure for pressing, which is a disadvantage when gluing large wooden beams, for instance.
Further, in the case of curtain application, it is hard to prevent the applied components from dripping off from the lamella when the lamella is turned 90 degrees (after the application, which is often necessary since the pressing equipment is often constructed such that the pressure is applied horizontally, i.e., the glue joints will be vertical. Thus, this method of application is more sensitive to variations in viscosity than the strand application method.
However, technical solutions are still sought for the need to find application systems for separate application of the components of a gluing system, which can be adjusted to the gluing system in question and the desired assembly times. By assembly time it is meant the time that lapse from the moment of application of a gluing system onto a substrate to the moment of pressing the substrates to be glued together.
The present invention accordingly provides a device, and a method using the device, by which the above-mentioned problems are overcome. The device according to the invention is defined in the appended claims. It comprises a unit of at least two hollow members, at least one member for each component, provided with a number of orifices, from which orifices in each member designed to apply the respective component onto a substrate below the hollow members to form strands, the hollow members being positioned above the plane of application, wherein the unit comprises means for adjusting the position of the orifices in at least one of the hollow members in relation to the position of the orifices in the other hollow member(s).
The means for adjusting the position of the orifices, in at least one of the hollow members, in relation to the position of the orifices in the other hollow member(s), can be a common exchangeable nozzle plate covering at least two hollow members, or alternatively it can comprise means for moving the hollow members in relation to each other in the cross machine section.
The orifices in the common nozzle plate can be arranged so that the later applied strands of one component substantially overlap, do not overlap, or do not contact, respectively, the corresponding strands of the previously applied component(s). A common nozzle plate it may be suitable when the centre to centre distances between the hollow members is from about 5 mm to 900 mm, provided that the total distance, centre to centre, between the two most distant hollow members is no more than about 900 mm. The moving means can move the hollow members in relation to each other in the cross machine direction. In this way the position of the orifices in at least one of the hollow members can be adjusted in relation to the position of the orifices in the other hollow member(s). Thus, the position of the hollow members in relation to each other can be adjusted so that the later applied strands of one component substantially overlap, do not overlap, or do not contact, respectively, the corresponding strands of the previously applied component(s).
With the device according to the present invention the strands can be applied safely and carefully at the accurate position on the substrate.
The device can be provided with guiding means, which are connected to the application unit, in order to prevent the components from falling onto the edges of the substrate that are not to be glued. The guiding means, during application, engage with the contour of the substrate in the machine direction, while the unit is being held movable in the cross machine direction.
The method according to the invention is defined in the appended claims. It comprises use of the above-described device for applying a gluing system of at least two components, such as a resin component and a hardener component, in the form of strands, onto a substrate.
The substrate is suitable fed under the hollow members through the device. Depending on the reactivity of the components in the gluing system and the desired assembly times, the later applied strands may overlap, do not overlap, or do not contact, respectively, the corresponding previously applied strands of the other components.
As used here, the term "strand" also comprehends the meaning of the term "ribbon", also conventionally used in the art, and any other like term.
The invention will now be described in more detail with reference to the accompanying drawings. Fig. 1 shows an embodiment of the device according to the invention to be used with two components, comprising two hollow members, 1 and 2, with a short c/c distance. Fig. 2, shows an embodiment of the device according to the invention to be used with two or three different components, comprising three hollow members, 1, 2 and 3 and Fig. 3 illustrates an embodiment having four hollow members, 1 , 2, 3 and 4. Fig. 4 shows another embodiment according to the invention with four movable hollow members 1 , 2, 3 and 4. Fig. 5 and 6 show two different positions of the orifices of one hollow member in relation to the orifices of the other hollow member in the common nozzle plate for an embodiment according to Fig. 1. Finally, Fig. 7 and 8 show two different positions of one hollow member and its orifices in relation to the other hollow member and its orifices for an embodiment according to Fig. 4 but with only two hollow members.
In the Figures, the strands are designated by the reference numeral 10, and the letters a, b, c, and d, respectively, are used to denote details pertaining to the hollow member 1 , 2, 3, and 4, respectively. Each hollow member is provided with an inlet 9, through which the respective component is supplied. The device comprises at least two hollow members having a multitude of small holes 6, the members being fixed to each other in parallel by means of fixation means, forming a unit. The longitudinal axes of the hollow members are placed substantially perpendicularly to the machine direction of the device with spacing between said members in said direction. The sideways distance(s) between said members can be adjusted. The small holes 6 of the hollow members are facing the substrate 8. Said holes constitute orifices for resin and hardener component, respectively, through which the components flow during application. At least one hollow member for each of the two above-mentioned components is provided in the device. Additional hollow members for application of the same or other additional desired components can also be provided in the device.
The orifices of each member can be at a distance of 2-16 mm, suitably 2-5 mm from each other, depending on the specific substrate to which glue is to be applied. The diameter of said holes can range from 1-10 mm, suitably 2-5 mm. A suitable substrate can, for instance, be a wooden lamella. Other substrates that can be used can be made of, for example, metal, plastic, or composite material. If desired, by selection of the proper distances and flow rates, the strands of any given component can be made to coalesce to an essentially coherent mass.
Suitable amounts of the components to be applied are in the range of 200-500 g/m2, depending, interalia, on the feeding rate. At feeding rates below 30 m/min difficulties in dosage are likely to be encountered due to discontinuous strands emanating from the orifices (dripping). A suitable feeding speed of the substrates is up to 300 m/min, more suitably 30-250 m/min, and preferably 60-200 m/min.
In Fig. 1 , a device comprising 2 hollow members, 1 and 2, one for resin and the other for hardener components, is shown. The flow rates of the two components are adjusted by means of two pumps (not shown).
The holes 6 of the respective hollow members, from which the respective components are applied to the substrate, can be formed directly in the hollow member and/or in a nozzle plate as represented by reference numeral 5. Depending on the distance between the hollow members, two or more of the members can have a common nozzle plate 5, as shown in Figures 1, 2, and 3. A common nozzle plate is suitable when the centre to centre distances between the members are relatively short, e.g. 5-40 mm.
Depending on which arrangement of the position of the orifices of the hollow members in relation to each other within the common nozzle plate 5 that is desired in each occasion, the common nozzle plate 5 can simply be replaced with another nozzle plate 5 having orifices at suitable positions.
In Fig. 2, an embodiment such as depicted in Fig. 1 is shown, with the exception of that in the present embodiment three hollow members, 1 , 2 and 3, are being used, one of which members can be used for the resin component, a second for the hardener component, and a third for hardener additives, such as for example an accelerator, respectively. This embodiment could also be used for application of only two components, such as resin-hardener-resin, for example, or resin and hardener together with a third component other than the accelerator.
Fig. 3 shows another embodiment wherein four hollow members, 1 , 2, 3 and 4, is used for the application of, in the following order; glue, hardener, a hardener additive, such as an accelerator, and finally, glue again.
Fig. 4 shows another embodiment; wherein the distance centre to centre between the hollow members is greater than in Fig. 3. In this embodiment separate nozzle plates, 5a-d, are used. Here, instead of fixation means 7 as shown in Fig. 1-3, fixation means 12 are used, which allow for regulation of the individual sideways distance between, said members. In this embodiment means for moving 11 the hollow members in relation to each other in the cross machine direction are used.
In Fig. 5 the orifices of one hollow member in relation to the orifices of the other hollow member, within a common nozzle plate 5 are shown, wherein each of the orifices 6a in one of the hollow members are aligned in the machine direction with the corresponding orifices 6b of the other hollow member. Fig. 7 also shows the orifices of two hollow members being aligned in relation to each other in the cross machine direction, with the exception that the hollow members here do not have a common nozzle plate and the position of the hollow members is adjusted by the moving means 11 in the cross machine direction. The embodiments shown in these figures enable application of a resin and a hardener onto a substrate, wherein the later applied strands of one component are overlapping the previously applied strands of the other component.
Fig. 6 shows an embodiment with two hollow members with a common nozzle plate 5, wherein each of the orifices 6a in one hollow member are parallel displaced in the machine direction in relation to the corresponding orifices 6b of the other hollow member. Fig. 8 shows an embodiment with two hollow members without a common nozzle plate, wherein one hollow member is moved in the cross machine direction, in relation to the other hollow member so that each of the orifices 6a of one hollow member are parallel displaced in the machine direction, in relation to the corresponding orifices 6b of the other hollow member. The embodiments shown in these figures enable application of a resin and a hardener onto a substrate, wherein the later applied strands of one component are applied at a certain distance 13, depending on the gluing system used and the wanted assembly time, in relation to the previously applied strands of the other component.
Depending on the reactivity of the components of the gluing system and the desired assembly time, the strands of the different components, such as the hardener and the resin, can be applied in relation to each other in various suitable ways. Thus, for low reactive/slow curing gluing systems, and/or short assembly times, it is suitable that the later applied strands of one component overlap the corresponding strands of the previously applied component(s), or they are applied adjacent to each other so that they are in essentially contact with each other. When high reactive/fast curing gluing systems are used, and/or long assembly times are desired, it is suitable that the later applied strands of one component are applied with a certain distance 13 in relation to the corresponding strands of the previously applied component(s). For assembly times of about 60-120 min a distance of about 4-8 mm between the strands of the different components of the gluing system, such as the hardener and the resin, is suitable, for assembly times of about 15-60 min a distance of about 2-4 mm is preferred, and for assembly times of about up to 15 min overlapping of the strands or essentially contact between them is preferred.
According to one embodiment of the present invention the strands of resin and hardener components, respectively, are applied uniformly after each other so that essentially continuous contact of each strand of one component with each corresponding strand of the other component(s) is achieved throughout the length of the strands. That is, the later applied strands of one component will normally substantially overlap the corresponding strands of the previously applied component(s). Thereby, a relatively smaller strand, normally the hardener component, can be brought to lie substantially within the width of a larger strand, e.g., on top of, or under a larger strand, depending on the order of application. The strands of one component can also be applied in such close proximity to the adjacent similar strands so that, when applied to the substrate, said strands form an essentially coherent liquid mass, on to which mass, subsequently, an essentially coherent mass of a second component can be formed in the same manner. According to one embodiment of the invention, there is provided a device, by means of which the components can be prevented from falling onto the edges of the substrate that are not to be glued, and thereby eliminate any faulting or other negative effects resulting from the components contacting undesired areas of the substrate. Thereby, also the glue waste is reduced. In this embodiment the device is provided with guiding means (not shown), as conventionally used in the art. Said guiding means, which is held in contact with the contour of the substrate, i.e., the side edges of the substrate in the direction of motion, is connected to the unit, which in turn is mounted movably in the cross-direction of the device, whereby a contour-following movement of the unit comprising the hollow members during the application of the components is established. The substrates used together with this embodiment can be somewhat curved or twisted while the above-described advantages still are obtained. By the use of guiding means in the application according to the invention, one avoids the spreading of any of the components on the outer surfaces of and the amount of waste, or the need for the collecting and/or recirculation of any excessive volumes of the components used falling outside the substrate is thereby reduced to a minimum. The guiding means can for example be comprised of guiding plates, which are mounted on a common axis with the distance between said guiding plates being adjustable in order to match different width of substrates used.
The holes 6 of the hollow members 1 ,2,3,4 can be covered from inside by means of a rod-shaped device (not shown), operated from outside, that can be brought into said member from the end thereof, parallel to the longitudinal axis thereof, and locked in the desired position in order to adjust the number of the open holes 6 to the width of the specific substrate 8. The way of regulating the width used of the hollow members to the width of the substrate is not critical and can be accomplished in any suitable manner. The device according to the invention can have a start stop and/or a circulating system.
The distance between the centres of the hollow members 1 ,2,3,4 is dependent on the method of feeding the components to the members, a few examples of which will be described hereinafter, and the number of members used, and can range from about 5 to 900 mm.
Thus, as an example, in the case of an embodiment of the invention having four hollow members, as shown in Fig. 3 and 4, a suitable distance from the centre of the one outer hollow member to the centre of the other outer member (i.e., 1 and 4 in the figures) is in the range of about from 15 to 900 mm. With only two members, as shown in Fig. 1 , the distance from centre to centre is from about 5 to 900 mm, a suitable range being 40 to 300 mm. In any case, for practical considerations, the total distance should suitably not exceed about 900 mm.
In the case of separate continuous recirculation of the respective components, the excessive amounts of the components not applied to the substrate 8, collected in the respective collecting trays (not shown) positioned under the hollow members, are directed back to the respective hollow member by means of pumping, together with the components fed from the supply tanks. Thus, the components are continuously running from the respective members. Here, a larger distance, such as about 300 to 900 mm, is preferred in order to prevent any splatter of the first component from the front of a lamella to reach in to the collecting tray of the other component as mentioned above. In the case of the so called start/stop operation, there are two different types of pumping in order to feed the components to the hollow members, firstly, a simple type, and secondly, a more elaborate one. In the first type the pumping of the respective component is switched on shortly before the front of the lamella reaches the respective hollow member, and then shortly after the passage, is switched off again. The second type is based on continuous circulation by means of pumping of the components in different circulation lines, from which lines the respective components are drained to the hollow members by means of 3-way valves. This latter method makes the start and stop of the application of the components more instant, due to the continuous pressure maintained in the circulating lines. The amount of the components not falling onto the substrate in the start/stop operation mode will in either case constitute the glue waste. In the former type said waste will typically be of the order 2-4 %, and in the latter even less.
In case of the start/stop operation, the distance between the centres of adjacent hollow members can be reduced to 5 mm, whereby the equipment can be made relatively small and easy to adjust to already existing manufacturing lines. The short distance will also improve the accuracy of the application according to the present invention.
From a working place environmental consideration, the start/stop operation is normally preferred, since any undesired emissions from the gluing system components in the respective collecting trays are reduced. Also, by not having the components continuously running from the hollow members, any such emissions are reduced.
The order of application of the resin and hardener components, respectively, is not critical and can be chosen as appropriate depending on the substrate, the specific components used, the subsequent processing, and the desired characteristics of the ultimate product. By using the device according to the invention hardeners comprising aggressive acids could be used since they can be prevented from getting into direct contact with the substrate. For example, this can be achieved by the application of the sequence of resin-hardener-resin, thereby securing the contact of the substrate with only the resin component, even when gluing said substrate together with another piece of substrate not provided with glue.
Also, when using a component comprising a substance which desirably should be prevented from being emitted into the atmosphere, or into a specific surrounding environment for any reason, such as for example a volatile acid in the hardener component, such component can suitably be applied followed by at least one other component covering the component comprising the substance to be prevented from being emitted. For instance, in case of application of a gluing system comprising a resin component and a hardener component, the latter of which comprises a volatile acid, such as formic acid, acetic acid or pyrovic acid, which acid not necessarily must be prevented from contacting the substrate, a suitable order of application would be the hardener component first, which thereafter is covered with the resin component. Thus, the device and method according to the present invention offer many advantages, such as, for example, reduced glue waste, improved working environment during application, the possibility of gluing substrates which are sensitive to one of the components used, and also the benefits of a volume-effective system.
Examples of gluing systems which can be used together with the device according to the present invention are urea-formaldehyde, melamine-urea-formaldehyde, phenol-resorcinol-formaldehyde, emulsion polymer isocyanate, two component polyvinyl acetate, and two component polyurethane gluing systems.
The device according to the present invention can, for example, advantageously be used in a method of separate application of resin and hardener components of an amino resin gluing system wherein both component are applied in the form of strands in optional order of application, wherein the first applied component optionally can coalesce to form an essentially continuous layer thereof, onto which the other component is applied.
Another method wherein the present device suitably can be used is a method comprising separate application of resin and hardener components of an expandable gluing system in the form of strands, wherein said hardener component is acidic, and the resin component comprises one or more gas generating substances capable of forming a gas when contacted with said hardener component. The gas generating substance can be any carbonate or hydrogen carbonate that will generate CO2 upon contact with an acid. Suitable examples are, for instance, sodium hydrogen carbonate, calcium carbonate, sodium carbonate, ammonium carbonate, ammonium hydrogen carbonate, magnesium carbonate, or a mixture thereof.
While the present invention has been described with reference to embodiments wherein the substrate is being fed in the machine direction under the unit comprising the hollow members, the converse mode of operation is also conceivable within the scope of the appended claims, i.e., the substrate could be immobile with the unit passing above it during application of the components.

Claims

1. A device for application of a gluing system of at least two components, such as a resin component and a hardener component, c h a r a c t e r i s e d in that it comprises a unit of at least two hollow members (1 ,2,3,4), at least one member for each component, provided with a number of orifices (6,6a,6b) in each member designed to apply the respective component onto a substrate (8) below the hollow members to form strands (10a,10b,10c,10d), the hollow members being positioned above the plane of application, wherein the unit comprises means for adjusting the position of the orifices (6a) in at least one of the hollow members in relation to the position of the orifices (6b) in the other hollow member(s).
2. A device according to claim ^ cha racte rised in that the means for adjusting the position of the orifices (6a), in at least one of the hollow members, in relation to the position of the orifices (6b) in the other hollow member(s), is a common exchangeable nozzle plate (5) covering at least two hollow members (1,2,3). 3. A device according to claim 2, characterised in that the orifices (6a, 6b) for each of the hollow members (1 ,2,
3) in the common nozzle plate (5) can be arranged so that the later applied strands (10b) of one component substantially overlap the corresponding strands (10a) of the previously applied component(s).
4. A device according to claim 2, characterised in that the orifices (6a,6b) for each of the hollow members (1,2,3) in the common nozzle plate (5) can be arranged so that the later applied strands of one component do not overlap the corresponding strands of the previously applied component(s).
5. A device according to claim 2, ch a ra cte ri z e d in that the orifices (6a,6b) for each of the hollow members (1,2,3) in the common nozzle (5) plate can be arranged so that the later applied strands of one component do not contact the corresponding previously applied strands of the other component(s).
6. A device according to any of claims 2-5, characte rized in that the distance centre to centre between the hollow members is from about 5 mm to about 900 mm, provided that the total distance, centre to centre, between the two most distant hollow members is no more than about 900 mm.
7. A device according to claim ^ ch a racterised in that the means for adjusting the position of the orifices (6a,6b) in at least one of the hollow members in relation to the position of the orifices in the other hollow member(s) comprises means (11) for moving the hollow members (1,2,3,4) in relation to each other in the cross machine direction.
8. A device according to claim 7, c h a r a c t e r i s e d in that the position of the hollow members (1,2,3,4) in relation to each other can be adjusted so that the later applied strands of one component substantially overlap the corresponding strands of the previously applied component(s).
9. A device according to claim 7, characterised in that the position of the hollow members (1,2,3,4) in relation to each other can be adjusted so that the later applied strands of one component do not overlap the corresponding strands of the previously applied component(s).
10. A device according to claim 7, characterized in that the position of the hollow members (1,2,3,4) in relation to each other can be adjusted so that the later applied strands of one component do not contact the corresponding previously applied strands of the other component(s).
11. A device according to any of the previous claims, characte rized in that the unit is provided with guiding means connected to the unit, which means during application engage with the edge contour of the substrate in the machine direction, the unit being movable in the cross machine direction.
12. A method for applying a gluing system of at least two components, such as a resin component and a hardener component, in the form of strands (10a,10b,10c,10d) after each other, onto a substrate 8, using a device according to any of the claims 1-11, wherein the components in a controlled manner are separately applied, in the form of strands, onto the substrate.
13. A method according to claim 12, characterized in that the substrate (8) is fed under the hollow members (1,2,3,4) through the device.
14. A method according to claim 12, c h a ra ct e r i z e d in that the later applied strands (10b) of one component substantially overlap the corresponding previously applied strands (10a) of the other component(s).
15. A method according to claim 12, c h a ra ct e r i z e d in that the later applied strands of one component do not overlap the corresponding previously applied strands of the other component(s).
16. A method according to claim 12, characterized in that the later applied strands of one component do not contact the corresponding previously applied strands of the other component(s).
PCT/SE1999/001083 1998-06-22 1999-06-16 Device and method for application of a gluing system Ceased WO1999067027A1 (en)

Priority Applications (17)

Application Number Priority Date Filing Date Title
EEP200000747A EE04804B1 (en) 1998-06-22 1999-06-16 Apparatus and method for applying an adhesive complex consisting of at least two components, such as a resin component and a curing component
DE1089827T DE1089827T1 (en) 1998-06-22 1999-06-16 DEVICE AND METHOD FOR APPLYING GLUE
BR9911452-6A BR9911452A (en) 1998-06-22 1999-06-16 Device and method for applying a bonding system
SK1947-2000A SK285998B6 (en) 1998-06-22 1999-06-16 Device and method for application of a gluing system
NZ508484A NZ508484A (en) 1998-06-22 1999-06-16 A glue applicator for applying at least two components such as a resin and a hardener where the applicator has adjustable applying orifices
AT99931715T ATE222810T1 (en) 1998-06-22 1999-06-16 DEVICE AND METHOD FOR APPLYING GLUE
DK99931715T DK1089827T3 (en) 1998-06-22 1999-06-16 Apparatus and method for applying an adhesive system
DE69902664T DE69902664T2 (en) 1998-06-22 1999-06-16 APPARATUS AND METHOD FOR APPLYING GLUE
SI9930117T SI1089827T1 (en) 1998-06-22 1999-06-16 Device and method for application of a gluing system
AU48151/99A AU746915B2 (en) 1998-06-22 1999-06-16 Device and method for application of a gluing system
CA002335374A CA2335374C (en) 1998-06-22 1999-06-16 Device and method for application of a gluing system
ES99931715T ES2181454T3 (en) 1998-06-22 1999-06-16 DEVICE AND METHOD FOR APPLYING A PATCHING SYSTEM.
JP2000555703A JP3568478B2 (en) 1998-06-22 1999-06-16 Apparatus and method for applying adhesive
US09/700,777 US6428845B1 (en) 1998-06-22 1999-06-16 Device and method for application of a gluing system
PL344786A PL192752B1 (en) 1998-06-22 1999-06-16 A method and device for applying an adhesive assembly consisting (54) of at least two components
EP99931715A EP1089827B1 (en) 1998-06-22 1999-06-16 Device and method for application of a gluing system
NO20006512A NO20006512L (en) 1998-06-22 2000-12-20 Apparatus and method for applying an adhesive system

Applications Claiming Priority (18)

Application Number Priority Date Filing Date Title
SE9802222-1 1998-06-22
SE9802223-9 1998-06-22
SE9802223A SE9802223D0 (en) 1998-06-22 1998-06-22 Method of application
SE9802222A SE9802222D0 (en) 1998-06-22 1998-06-22 Device and method for application of a gluing system
SE9802224-7 1998-06-22
SE9802224A SE9802224D0 (en) 1998-06-22 1998-06-22 Method of application of a gluing system
US9144298P 1998-07-01 1998-07-01
US9143898P 1998-07-01 1998-07-01
US9144098P 1998-07-01 1998-07-01
US60/091,440 1998-07-01
US60/091,438 1998-07-01
US60/091,442 1998-07-01
SE9803550A SE9803550D0 (en) 1998-10-16 1998-10-16 Method of application
SE9803551-2 1998-10-16
SE9803549-6 1998-10-16
SE9803549A SE9803549D0 (en) 1998-10-16 1998-10-16 Device and method for application of a gluing system
SE9803550-4 1998-10-16
SE9803551A SE9803551D0 (en) 1998-10-16 1998-10-16 Method of application of a gluing system

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PCT/SE1999/001084 Ceased WO1999067028A1 (en) 1998-06-22 1999-06-16 Method of application
PCT/SE1999/001085 Ceased WO1999067341A1 (en) 1998-02-25 1999-06-16 Method for application of an expandable gluing system

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PCT/SE1999/001085 Ceased WO1999067341A1 (en) 1998-02-25 1999-06-16 Method for application of an expandable gluing system

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US (2) US6645332B1 (en)
EP (3) EP1089827B1 (en)
JP (3) JP3568478B2 (en)
CN (3) CN1099322C (en)
AT (3) ATE222146T1 (en)
AU (3) AU751237B2 (en)
BR (2) BR9911451B1 (en)
CA (3) CA2336182C (en)
CZ (3) CZ297133B6 (en)
DE (5) DE1089827T1 (en)
DK (3) DK1095114T3 (en)
EE (3) EE03930B1 (en)
ES (3) ES2221398T3 (en)
ID (2) ID28172A (en)
NO (3) NO326181B1 (en)
NZ (2) NZ508485A (en)
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EP1157746A2 (en) 2000-05-24 2001-11-28 Illinois Tool Works Inc. Segmented stackable head design
EP1157746A3 (en) * 2000-05-24 2003-05-28 Illinois Tool Works Inc. Segmented stackable head design
KR100778464B1 (en) * 2000-05-24 2007-11-21 일리노이즈 툴 워크스 인코포레이티드 Split stackable head design
DE10057729A1 (en) * 2000-11-22 2002-05-23 Voith Paper Patent Gmbh Web coating station, has two applicators, to deliver the coatings as falling curtains, with different coating media and a structured gap between the strike points of each at the moving substrate for the overlaid layers
WO2002043880A3 (en) * 2000-11-29 2003-08-21 Akzo Nobel Nv Process for variable applications of coating compositions with a three or more plural component apparatus
AU2002217951B2 (en) * 2000-11-29 2006-11-02 Akzo Nobel N.V. Process for variable applications of coating compositions with a three or more plural component apparatus
JP2002361153A (en) * 2001-06-08 2002-12-17 Toyota Motor Corp Application method and application apparatus for liquid composition containing solid component
WO2003095105A1 (en) * 2002-05-07 2003-11-20 Basf Aktiengesellschaft Method and device for applying glue and hardening constituents
EP1447142A1 (en) 2003-02-12 2004-08-18 Akzo Nobel N.V. Fluid applicator and method
US7638008B2 (en) 2004-05-25 2009-12-29 New Spirit Backing Llc Polyurethane roller coating process for carpet backing
US8910588B2 (en) 2004-05-25 2014-12-16 Kusters Zima Corporation Polyurethane roller coating device for carpet backing

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