EP0333417A2 - Coating process - Google Patents
Coating process Download PDFInfo
- Publication number
- EP0333417A2 EP0333417A2 EP89302464A EP89302464A EP0333417A2 EP 0333417 A2 EP0333417 A2 EP 0333417A2 EP 89302464 A EP89302464 A EP 89302464A EP 89302464 A EP89302464 A EP 89302464A EP 0333417 A2 EP0333417 A2 EP 0333417A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- substrate
- coating
- roll
- patterned
- intaglio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/70—Multistep processes; Apparatus for adding one or several substances in portions or in various ways to the paper, not covered by another single group of this main group
-
- 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
- B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
- B05D1/42—Distributing applied liquids or other fluent materials by members moving relatively to surface by non-rotary members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
-
- 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
- B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
-
- 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
- B05D2203/00—Other substrates
- B05D2203/22—Paper or cardboard
-
- 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
- B05D2252/00—Sheets
- B05D2252/02—Sheets of indefinite length
-
- 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
- B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
Definitions
- This invention relates to a process and apparatus for producing non uniform coatings in a predetermined controlled process and the products so produced.
- Printing images are generally well defined as reduced definition is not considered aesthetically desirable.
- the present invention provides a method for producing non uniform coatings on a substrate such as board, sheet or film in which a coating composition is applied to first surface of the substrate and the substrate is passed over a patterned surface wherein the second surface of the substrate contacts the patterned surface while a line of pressure is applied laterally to the said first surface.
- This invention also provides apparatus for producing non uniform coating comprising a coating applicator and a spreading device adapted to apply a coating material to one surface of a substrate and a patterned surface juxtaposed to make contact on the second surface of said substrate.
- the spreading device may be a rod, knife or doctor blade.
- patterned surface is meant a surface having portions raised or depressed to form an image in the lower or depressed surface portions.
- the patterned surface corresponds to an intaglio plate or roll the difference being the application of the coating to the substrate surface not in contact with the intaglio plate or roll.
- This produces a defined pattern or a non uniform coating which has a number of advantages to uniform coatings used as printing surfaces.
- the non uniform background is aesthetically pleasing while hiding any minor blemishes or traces of dirt which would be easily discerned with a uniform backing. This may be a decided advantage for packaging materials which are to bear printed designs or lettering.
- this invention provides a new method of printing in which the intaglio plate or roll does not come into contact with the printing ink or fluid.
- the definition of the printing or pattern on the substrate depends primarily on the following factors:
- the operating parameters of the process are similar to those of conventional printing or coating processes.
- the selection of ink type, blade pressure intaglio surface hardness and roll speed will be determined according to the substrate to be printed and the aesthetic appearance and functional charactistics which it is desired to achieve and the information which it is desired to impart.
- a feature of the process is its directionality with respect to spreading the coating in development of the image. This has the effect for example of depositing a greater coating thickness in an ellipse having major axis in running direction than in an ellipse of the same size having minor axis in running direction.
- the design of the depressions in the patterned backing surface needs to take account of orientation of the pattern in achieving the required effect.
- a particularly advantageous application of the present invention is in the printing of unbleached paper and paperboard packaging materials.
- flexibility of the paperboard is a factor in the method of this invention and paperboards having weights of up to 210 grams per square metre have been successfully coated by this method of the invention.
- the process is incorporated as a final stage of the manufacture of paperboard so that a coated or printed board is produced.
- the coating produced by this invention is suitable as a patterned background it may carry messages or bear indicia in a similar manner to the use of watermarks in paper making.
- the intaglio of patterned plate or roll has no contact with the ink or coating fluid the roll needs less cleaning and is not affected by ink retention as in conventional processes.
- figure 1 is a schematic view of a first embodiment
- figure 2 is a schematic view of a second embodiment.
- the substrate 1 to be coated is passed over a belt containing a perforated or embossed pattern.
- the belt 6 is supported on a roller 5.
- the underneath surface 3 of the substrate 1 contacts the patterned belt 6.
- a coating or ink formulation is spread on to the surface 2 of substrate 1 by a doctor blade 7 which spreads the composition over the surface 2 and applies pressure to the substrate 1. This results in the belt pattern being produced on the upper surface 2 of substrate 1.
- a patterned or intaglio roller could be used instead of roller 5 which would mean that the belt 6 is not needed.
- the quality of the definition of the pattern or printing depends on the factors mentioned above.
- the substrate 1 is passed between an intaglio roll 9 and a coating applicator roll 12 suspended in a coating or ink formulation or ink 11 within bath 10.
- Roll 12 applies the composition 11 to the surface 2 of substrate 1.
- the doctor blade 13 spreads the composition 11 non uniformly, (due to the recessed pattern on roll 9) onto substrate surface 2 and removes excess composition 11.
- the degree of contrast achieved depends on the flexibility of the substrate 2, the depth of the recesses on roll 9, the pressure of the blade 11 on the substrate.
- the hardness of the surface of roll 9 rheology of the ink composition of the coating or ink formulation and coating speed are also factors to be considered.
- the apparatus of this invention can be easily adapted from conventional coating apparatus which utilises rollers by placing an intaglio cover on the roll.
- this invention provides a unique non uniform coating and an apparatus and a method of producing it.
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Paper (AREA)
Abstract
A method and apparatus for producing a non uniform coating or a printed pattern where one surface 3 of a substrate 1 is passed over an intaglio roll 9 and a coating fluid 11 is spread on to the other surface 2 with a doctor blade 13. The areas on the substrate corresponding to the depressions on the roll acquire a denser coating. The process is particularly applicable for unbleached paperboard for use in box and carton manufacture.
Description
- This invention relates to a process and apparatus for producing non uniform coatings in a predetermined controlled process and the products so produced.
- Conventionally film or sheet like surfaces are coated uniformly by application of a coating composition which is spread onto a surface by an applicator roller or doctor blade. When a non uniform coating is required it is usual to adopt one of four printing techniques namely:
- 1) relief or letterpress,
- 2) intaglio or gravure,
- 3) planography or lithography, and
- 4) stencil, porous membrane or screen processes.
- Printing images are generally well defined as reduced definition is not considered aesthetically desirable.
- It is an object of this invention to provide a predetermined patterned coated surface.
- To this end the present invention provides a method for producing non uniform coatings on a substrate such as board, sheet or film in which a coating composition is applied to first surface of the substrate and the substrate is passed over a patterned surface wherein the second surface of the substrate contacts the patterned surface while a line of pressure is applied laterally to the said first surface.
- This invention also provides apparatus for producing non uniform coating comprising a coating applicator and a spreading device adapted to apply a coating material to one surface of a substrate and a patterned surface juxtaposed to make contact on the second surface of said substrate. The spreading device may be a rod, knife or doctor blade.
- By patterned surface is meant a surface having portions raised or depressed to form an image in the lower or depressed surface portions.
- By applying a patterned surface to the back surface, those areas of the substrate corresponding to depressed areas on the patterned surface retain more coating. Clearly the substrate needs to be flexible to conform to the support surface under pressure. The patterned surface corresponds to an intaglio plate or roll the difference being the application of the coating to the substrate surface not in contact with the intaglio plate or roll. This produces a defined pattern or a non uniform coating which has a number of advantages to uniform coatings used as printing surfaces. The non uniform background is aesthetically pleasing while hiding any minor blemishes or traces of dirt which would be easily discerned with a uniform backing. This may be a decided advantage for packaging materials which are to bear printed designs or lettering.
- These initial preparation/printing steps provide opportunity to enhance the paper or paperboard quality for any of those properties where surface application during or after the papermaking process is used for such purposes by existing art. Some properties in this category are surface strength; hold out of ink, varnish and other liquids; permeance to air, water vapour and other gases; coefficient of friction; scuff resistance.
- In one aspect this invention provides a new method of printing in which the intaglio plate or roll does not come into contact with the printing ink or fluid. The definition of the printing or pattern on the substrate depends primarily on the following factors:
- a) The depth of the depressions in the intaglio support roll or plate.
- b) The hardness of the intaglio support surface.
- c) The flexibility and deformability of the substrate.
- d) The pressure applied by the rod, kinfe or doctor blade.
- e) The rheology of the ink or coating material in conjunction with running speed.
- The operating parameters of the process are similar to those of conventional printing or coating processes. The selection of ink type, blade pressure intaglio surface hardness and roll speed will be determined according to the substrate to be printed and the aesthetic appearance and functional charactistics which it is desired to achieve and the information which it is desired to impart.
- A feature of the process is its directionality with respect to spreading the coating in development of the image. This has the effect for example of depositing a greater coating thickness in an ellipse having major axis in running direction than in an ellipse of the same size having minor axis in running direction. Thus the design of the depressions in the patterned backing surface needs to take account of orientation of the pattern in achieving the required effect.
- A particularly advantageous application of the present invention is in the printing of unbleached paper and paperboard packaging materials. As mentioned above the flexibility of the paperboard is a factor in the method of this invention and paperboards having weights of up to 210 grams per square metre have been successfully coated by this method of the invention.
- In the manufacture of paperboard for boxes it is conventional for appearance to use either a bleached layer in a multiply board or a coated unbleached board. The thus prepared board is then printed with the required indicia. By the process of the present invention unbleached board can be coated and printed in one operation. If desired a further layer of printing can be applied as in a multicolour printing process but the initial preparation step is combined with the initial printing step.
- In one aspect of this invention the process is incorporated as a final stage of the manufacture of paperboard so that a coated or printed board is produced.
- Because the coating produced by this invention is suitable as a patterned background it may carry messages or bear indicia in a similar manner to the use of watermarks in paper making.
- Because the intaglio of patterned plate or roll has no contact with the ink or coating fluid the roll needs less cleaning and is not affected by ink retention as in conventional processes.
- Preferred forms of this invention will now be described with reference to the drawings in which figure 1 is a schematic view of a first embodiment and figure 2 is a schematic view of a second embodiment.
- In figure 1 the substrate 1 to be coated is passed over a belt containing a perforated or embossed pattern. The
belt 6 is supported on a roller 5. Theunderneath surface 3 of the substrate 1 contacts the patternedbelt 6. A coating or ink formulation is spread on to thesurface 2 of substrate 1 by a doctor blade 7 which spreads the composition over thesurface 2 and applies pressure to the substrate 1. This results in the belt pattern being produced on theupper surface 2 of substrate 1. A patterned or intaglio roller could be used instead of roller 5 which would mean that thebelt 6 is not needed. The quality of the definition of the pattern or printing depends on the factors mentioned above. - In figure 2 the substrate 1 is passed between an
intaglio roll 9 and a coating applicator roll 12 suspended in a coating or ink formulation orink 11 withinbath 10.Roll 12 applies thecomposition 11 to thesurface 2 of substrate 1. Thedoctor blade 13 spreads thecomposition 11 non uniformly, (due to the recessed pattern on roll 9) ontosubstrate surface 2 and removesexcess composition 11. - The degree of contrast achieved depends on the flexibility of the
substrate 2, the depth of the recesses onroll 9, the pressure of theblade 11 on the substrate. The hardness of the surface ofroll 9 rheology of the ink composition of the coating or ink formulation and coating speed are also factors to be considered. - When utilising a perforated pattern it may be advantageous to increase or reduce the deflection of the substrate over the cavities by controlled application of vacuum or pressure with the objective of increasing or decreasing the liquid thickness carried forward on the substrate at areas corresponding with these cavities.
- The apparatus of this invention can be easily adapted from conventional coating apparatus which utilises rollers by placing an intaglio cover on the roll.
- From the above it can be seen that this invention provides a unique non uniform coating and an apparatus and a method of producing it.
Claims (6)
1. A method for producing non uniform coatings on a substrate such as board, sheet or film in which a coating composition is applied to first surface of the substrate and the substrate is passed over a patterned surface wherein the second surface of the substrate contacts the patterned surface while a line of pressure is applied laterally to the said first surface.
2. A method as claimed in claim 1 in which the patterned surface is on a roller and the line of pressure is produced by a rod, knife or doctor blade.
3. A method as claimed in claims 1 or 2 wherein the substrate is unbleached paper or paperboard.
4. Apparatus for producing non uniform coating comprising a coating applicator and a spreading device adapted to apply a coating material to one surface of a substrate and a patterned surface juxtaposed to make contact on the second surface of said substrate.
5. Apparatus as claimed in claim 4 wherein the substrate is passed onto a roll having an intaglio surface and ink or coating fluid is spread over the substrate surface not in contact with the intaglio surface by a rod, knife or doctor blade.
6. A method as claimed in claims 1 or 2 wherein the substrate is a sheet or roll of textile.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPI731188 | 1988-03-18 | ||
AU7311/88 | 1988-03-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0333417A2 true EP0333417A2 (en) | 1989-09-20 |
EP0333417A3 EP0333417A3 (en) | 1991-08-28 |
Family
ID=3772929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890302464 Withdrawn EP0333417A3 (en) | 1988-03-18 | 1989-03-14 | Coating process |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0333417A3 (en) |
AU (1) | AU3137489A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001036111A2 (en) * | 1999-11-13 | 2001-05-25 | Citius Bürotechnik Gmbh | Method for production of a foil-like support material coated with an adhesive |
US6610804B2 (en) * | 2001-08-24 | 2003-08-26 | Bridgestone Corporation | Iron-based catalyst composition for the manufacture of syndiotactic 1, 2-polybutadiene |
WO2008000665A2 (en) | 2006-06-27 | 2008-01-03 | Basf Se | Method for finishing paper and paper products |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE401307C (en) * | 1922-06-03 | 1924-08-28 | Hoechst Ag | Process for creating color effects on paper and fabrics |
US2139269A (en) * | 1935-05-13 | 1938-12-06 | Beveridge Marvellum Company | Decorative paper and method of making the same |
DE808684C (en) * | 1949-12-09 | 1951-07-19 | Norddeutsche Tapetenfabrik Hoe | Process for applying colors or layers to paper or the like embossed by means of rollers |
US2875724A (en) * | 1955-10-07 | 1959-03-03 | Curt G Joa | Apparatus for selective pattern impregnation or coating |
-
1989
- 1989-03-14 EP EP19890302464 patent/EP0333417A3/en not_active Withdrawn
- 1989-03-18 AU AU31374/89A patent/AU3137489A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE401307C (en) * | 1922-06-03 | 1924-08-28 | Hoechst Ag | Process for creating color effects on paper and fabrics |
US2139269A (en) * | 1935-05-13 | 1938-12-06 | Beveridge Marvellum Company | Decorative paper and method of making the same |
DE808684C (en) * | 1949-12-09 | 1951-07-19 | Norddeutsche Tapetenfabrik Hoe | Process for applying colors or layers to paper or the like embossed by means of rollers |
US2875724A (en) * | 1955-10-07 | 1959-03-03 | Curt G Joa | Apparatus for selective pattern impregnation or coating |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001036111A2 (en) * | 1999-11-13 | 2001-05-25 | Citius Bürotechnik Gmbh | Method for production of a foil-like support material coated with an adhesive |
WO2001036111A3 (en) * | 1999-11-13 | 2001-12-13 | Citius Gmbh Buerotechnik | Method for production of a foil-like support material coated with an adhesive |
US6610804B2 (en) * | 2001-08-24 | 2003-08-26 | Bridgestone Corporation | Iron-based catalyst composition for the manufacture of syndiotactic 1, 2-polybutadiene |
WO2008000665A2 (en) | 2006-06-27 | 2008-01-03 | Basf Se | Method for finishing paper and paper products |
WO2008000665A3 (en) * | 2006-06-27 | 2008-03-27 | Basf Ag | Method for finishing paper and paper products |
Also Published As
Publication number | Publication date |
---|---|
EP0333417A3 (en) | 1991-08-28 |
AU3137489A (en) | 1989-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA1332127C (en) | Method for making coated and printed packaging material on a printing press | |
US4294650A (en) | Method of and apparatus for producing embossing tools | |
EP0117054B1 (en) | Method and apparatus for coating paper and the like | |
CA2048433A1 (en) | Paper coating method and apparatus | |
CA2240072A1 (en) | Method for making three-dimensional, macroscopically-expanded webs having improved functional surfaces | |
CA2025977A1 (en) | Process for preparing embossed, coated paper | |
KR900008686B1 (en) | Release sheet and method for making thereof | |
JPH0768680B2 (en) | Simulated watermark generation method | |
CA2423827A1 (en) | Foam treatment of tissue products | |
CA2443998A1 (en) | Paper articles exhibiting long term storageability | |
US4135962A (en) | Apparatus for decorating sheet material | |
US4973441A (en) | Method of manufacturing a compressibility gradient in paper | |
EP0333417A2 (en) | Coating process | |
US3952119A (en) | Process for coloring absorptive, rough surface paper | |
US20020038789A1 (en) | Device for producing material having optically varying effects and method of producing the same | |
JP2008260259A (en) | Lacquered japanese paper, and its manufacturing method | |
US20090294080A1 (en) | Glossy paper | |
JP6733023B2 (en) | How to make printed products | |
JP3215011B2 (en) | Three-dimensionally printed seal and manufacturing method thereof | |
JPH01281979A (en) | Method and device for forming unequal coating on substrate | |
KR19990070759A (en) | Stereoscopic printing method | |
GB2078173A (en) | Method of making colour patterns on material | |
JP3334365B2 (en) | Decorative paper with wear resistance | |
JP2862292B2 (en) | Method and apparatus for manufacturing cosmetic material | |
JPH03124900A (en) | Preparation of sheathing material |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19911003 |