EP0054405A1 - Process for the manufacture of decorative laminates - Google Patents

Process for the manufacture of decorative laminates Download PDF

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Publication number
EP0054405A1
EP0054405A1 EP81305807A EP81305807A EP0054405A1 EP 0054405 A1 EP0054405 A1 EP 0054405A1 EP 81305807 A EP81305807 A EP 81305807A EP 81305807 A EP81305807 A EP 81305807A EP 0054405 A1 EP0054405 A1 EP 0054405A1
Authority
EP
European Patent Office
Prior art keywords
paper
decorative laminate
manufacture
pigment
binder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81305807A
Other languages
German (de)
French (fr)
Other versions
EP0054405B1 (en
Inventor
John Allen Sandys Newman
Alison Mary Ritchie
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.)
DEVON VALLEY INDUSTRIES LIMITED
Original Assignee
Devon Valley Industries Ltd
Wiggins Teape Group Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Devon Valley Industries Ltd, Wiggins Teape Group Ltd filed Critical Devon Valley Industries Ltd
Publication of EP0054405A1 publication Critical patent/EP0054405A1/en
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Publication of EP0054405B1 publication Critical patent/EP0054405B1/en
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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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper

Definitions

  • This invention relates to a process for the manufacture of decorative laminates, to the laminates so made and to a paper for use in the process.
  • Decorative laminates are used, for example, for surfacing furniture, particularly kitchen or other furniture where it is desirable to have a water-resistant, easily-wipeable surface, for counter tops in shops and cafes and for building panels. They may be white or coloured, and may be plain or printed, for example with a woodgrain or other pattern. Printing may be in several colours, and is usually effected by a rotogravure technique.
  • One well-known type of decorative laminate (usually known as a high-pressure laminate) consists of several so-called core sheets for imparting strength to the laminate, a decorative sheet serving to mask the uppermost core sheet and to afford the laminate an attractive surface, and an overlay sheet on top of the decorative sheet (the overlay sheet becomes transparent during manufacture of the laminate, and so does not mask the decorative sheet).
  • a so-called barrier sheet can be provided between the decorative sheet and the uppermost core sheet to afford an additional masking effect. All the sheets forming the laminate are impregnated with a thermo-setting resin, for example a phenolic resin or a melamine-formaldehyde or other aminoplast resin (the various sheets making up the laminate are not usually all impregnated with the same resin).
  • the impregnating resin in the case of the decorative sheet is most commonly a melamine formaldehyde resin.
  • the resin is usually present in an amount of the order of 100% w/w.
  • the decorative sheet normally carries the print.
  • the overlay sheet may carry the print on its surface which contacts the decorative sheet.
  • the core sheets are normally of strong relatively inexpensive paper, for example unbleached softwood kraft paper. Such paper is not of uniform or particularly attractive appearance, and is not suitable for high quality printing. For this reason,'i-t is necessary for the: decorative sheet to be sufficiently opaque to mask the unattractive and non-uniform appearance of the uppermost core sheet, and for it to be suitable for high quality printing.
  • a sheet of chipboard or similar material is used directly as a support for the decorative sheet, instead of the core sheets.
  • the decorative sheet in such a laminate serves to mask.the chipboard rather than the core sheets.
  • Barrier sheets are not normally used in this type of laminate since chipboard is normally of a lighter shade than core sheets and hence is more easily masked.
  • plastic base surface paper In addition to being opaque and suitable for printing, it must be absorbent so that it may easily be impregnated with resin during a single pass through an impregnating bath, which typically takes about 20sec. The same applies to the overlay sheet if it is to be printed.
  • the absorbency of plastic base surface paper is typically in the range 30 to 65 mm/10 min if for use in a high-pressure laminate, or in the range 25 to 45 mm/10 min if for use in a low-pressure laminate (in the Klemm method a strip of paper 15 mm wide is suspended vertically with one end in a dish of the liquid concerned and the distance the liquid soaks up the paper in ten minutes is measured).
  • the absorbency of an overlay sheet is typically in the higher part of the range quoted for plastic base surface paper for use in a high-pressure laminate.
  • the absorbency of plastic base surface paper may also be quoted.in terms of porosity as measured by a Gurley porosity tester, since porosity is related to speed of absorbency in this instance.
  • Plastic base surface paper typically has a Gurley porosity (20 oz) in the range 10 to 25 sec/100 ml preferably 20 to 25 sec/100 ml, if for use in a high-pressure laminate, or in the range 15 to 50 sec/100 ml if for use in a low-pressure laminate, although values of 70 sec/100 ml or more are acceptable.
  • plastic base surface paper and overlay paper to be absorbent results in a relatively rough paper surface which is not particularly suitable for high quality gravure printing.
  • the rough surface makes it difficult to obtain complete print coverage from every gravure cell.
  • the absorbent nature of the paper allows ink to penetrate into the sheet and print intensity is therefore reduced.
  • plastic base surface and overlay paper can be printed to a high standard, provided larger quantities of ink are used than would be needed on a good printing surface or provided a lower absorbency is acceptable.
  • the present invention provides in a first aspect a process for the manufacture of a decorative laminate comprising the steps of applying a liquid coating composition comprising a pigment and a binder to a surface of a previously formed and dried decorative laminate surface or overlay paper to give a coatweight when dry of up to 10gm -2 on said surface, the resulting coated paper having a Gurley porosity (20 oz) of about 10 to 70 sec/100 ml, printing a desired pattern on said coated surface of said paper, impregnating the resulting printed paper with a thermo-setting resin and laminating the impregnated paper to a support therefor under conditions effective to cure the resin, thereby to produce said decorative laminate.
  • the present invention provides a decorative laminate surface or overlay paper carrying a coating composition comprising a pigment and a binder on a surface thereof at a coatweight of up to 10gm -2 , said paper having a Gurley porosity of about 10 to 70 sec/100 ml and said pigment being kaolin, calcium carbonate, titanium dioxide or barium sulphate.
  • the coatweight and the weight ratio of pigment to binder must be chosen carefully.
  • the preferred dry coatweight is in the range of from 2.5 to 3gm -2 .
  • the weight ratio of pigment to binder in the coating is preferably in the range 5:1 to 1:1, more preferably from 2.5:1 to 3.5:1.
  • the Gurley porosity (20 oz ) of the coated paper is preferably in the range 20 to 50 sec/100 ml.
  • the pigment is preferably one having a Mchs hardness of less than 7, for example kaolin, calcium carbonate in precipitated or ground form, titanium dioxide or barium sulphate. Pigments having a Mohs hardness greater than 7, such as alumina or hydrated alumina, various natural or synthetic alumino-silicates or silica or silica gel may however be used.
  • the binder may be starch, casein, latex, polyvinyl alcohol or an aminoplast or other cross-linking resin.
  • the liquid coating composition comprising the pigment and binder is applied by size press treatment, although other coating techniques may be used, for example air-knife coating. It will be appreciated that size press treatment normally results in a coating being applied to both surfaces of the paper web.
  • the decorative laminate surface or overlay paper may be calendered before being impregnated.
  • the present plastic base surface or overlay paper enables an improvement in print quality to be obtained as a result of more complete ink transfer from the gravure cells and of less ink absorption. It also permits a reduction in ink usage for a print of specified quality, or, for the same ink usage affords a better print than would be obtained on the same paper if it were not coated.
  • a sheet of plastic base surface paper having a grammage of 100gm -2 was size press coated with an aqueous coating containing a mixture of kaolin (supplied by English China Clays under the designation "Supreme”), esterified starch and melamine-formaldehyde resin in a weight ratio of 3:1:0.001.
  • the coating was then dried, the dry coatweight being 3gm -2 .
  • the absorbency of both the coated and the uncoated paper was found to be 30mm/10 min.
  • the Gurley porosity (20 oz) of the coated paper was found to be 24 sec/ 100 ml, and that of the uncoated paper was 18 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the same-amount of ink using a gravure printing process.
  • the optical reflectivity of the uncoated paper (as measured by an Elrepho opacimeter) was 20% whereas that of the coated paper was 10%.
  • Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.
  • a sheet of plastic base surface paper having a grammage of 120gm -2 was size press coated with an aqueous coating containing a mixture of barium sulphate (precipitated), esterified starch and melamine formaldehyde resin in a weight ratio of 3:1:0.001.
  • the coating was then dried and calendered, the dry coatweight being 7gm -2 .
  • the Gurley porosity (20 oz) of the coated paper was found to be 26 sec/100 ml, and that of the uncoated paper was 14 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the same amount of ink using a gravure printing nrocess.
  • the optical reflectivity of the uncoated paper was 20% whereas that of the coated paper was 18%.
  • Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.
  • a sheet of plastic base surface paper having a grammage of 120gm -2 was size press coated with an aqueous coating containing a mixture of titanium dioxide (supplied by British Titan Products, under the designation ALF), esterified starch and melamine formaldehyde resin in a weight ratio of 3:1:0.001.
  • the coating was then dried and calendered, the dry coatweight being 6.6gm .
  • the Gurley porosity (20 oz) of the coated paper was found to be 69 sec/100 ml, and that of the uncoated paper was 14 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the same amount of ink using a gravure printing process.
  • the optical reflectivity of the uncoated paper was 20% whereas that of the coated paper was 17%.
  • Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.
  • a sheet of plastic base surface paper having a grammage of 120gm -2 was size press coated with an aqueous coating containing a mixture of calcium carbonate (under the designation Hydrocarb) esterified starch and melamine formaldehyde resin in a weight ratio of 3:1:0.001.
  • the coating was then dried and calendered, the dry coatweight being 5.5gm -2 .
  • the Gurley porosity (20 oz) of the coated paper was found to be 50 sec/100 ml, and that of the uncoated paper was 14 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the -same amount of ink using a gravure printing process.
  • the optical reflectivity of the uncoated paper was 20% whereas that of the coated paper was 17%.
  • Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.

Landscapes

  • Laminated Bodies (AREA)
  • Paper (AREA)

Abstract

A process for the manufacture of a decorative laminate utilises a decorative laminate surface or overlay paper carrying a coating comprising a pigment and a binder. This coating affords improved printability without unacceptably reducing absorbency towards impregnating resins. The Gurley porosity of the coated paper is about 10-70 sec/100 ml; and the coating is present at a dry coatweight of up to 10 gm-2, preferably 2.5 to 3 gm-2. The coating is preferably applied by means of a size press. Laminate manufacture using the paper is conventional.

Description

  • This invention relates to a process for the manufacture of decorative laminates, to the laminates so made and to a paper for use in the process.
  • Decorative laminates are used, for example, for surfacing furniture, particularly kitchen or other furniture where it is desirable to have a water-resistant, easily-wipeable surface, for counter tops in shops and cafes and for building panels. They may be white or coloured, and may be plain or printed, for example with a woodgrain or other pattern. Printing may be in several colours, and is usually effected by a rotogravure technique.
  • One well-known type of decorative laminate (usually known as a high-pressure laminate) consists of several so-called core sheets for imparting strength to the laminate, a decorative sheet serving to mask the uppermost core sheet and to afford the laminate an attractive surface, and an overlay sheet on top of the decorative sheet (the overlay sheet becomes transparent during manufacture of the laminate, and so does not mask the decorative sheet). A so-called barrier sheet can be provided between the decorative sheet and the uppermost core sheet to afford an additional masking effect. All the sheets forming the laminate are impregnated with a thermo-setting resin, for example a phenolic resin or a melamine-formaldehyde or other aminoplast resin (the various sheets making up the laminate are not usually all impregnated with the same resin). The impregnating resin in the case of the decorative sheet is most commonly a melamine formaldehyde resin. In the final impregnated sheet, the resin is usually present in an amount of the order of 100% w/w. If the decorative laminate is to be of a printed design, the decorative sheet normally carries the print. Alternatively, however, the overlay sheet may carry the print on its surface which contacts the decorative sheet.
  • The core sheets are normally of strong relatively inexpensive paper, for example unbleached softwood kraft paper. Such paper is not of uniform or particularly attractive appearance, and is not suitable for high quality printing. For this reason,'i-t is necessary for the: decorative sheet to be sufficiently opaque to mask the unattractive and non-uniform appearance of the uppermost core sheet, and for it to be suitable for high quality printing.
  • In another type of decorative laminate (usually known as a low-pressure laminate), a sheet of chipboard or similar material is used directly as a support for the decorative sheet, instead of the core sheets. The decorative sheet in such a laminate serves to mask.the chipboard rather than the core sheets. Again, it is necessary for the decorative sheet to be opaque and to be suitable for high quality printing. Barrier sheets are not normally used in this type of laminate since chipboard is normally of a lighter shade than core sheets and hence is more easily masked.
  • The paper which is used for making decorative sheets is known as plastic base surface paper. In addition to being opaque and suitable for printing, it must be absorbent so that it may easily be impregnated with resin during a single pass through an impregnating bath, which typically takes about 20sec. The same applies to the overlay sheet if it is to be printed. The absorbency of plastic base surface paper, as measured by the Klemm method, is typically in the range 30 to 65 mm/10 min if for use in a high-pressure laminate, or in the range 25 to 45 mm/10 min if for use in a low-pressure laminate (in the Klemm method a strip of paper 15 mm wide is suspended vertically with one end in a dish of the liquid concerned and the distance the liquid soaks up the paper in ten minutes is measured). The absorbency of an overlay sheet is typically in the higher part of the range quoted for plastic base surface paper for use in a high-pressure laminate. The absorbency of plastic base surface paper may also be quoted.in terms of porosity as measured by a Gurley porosity tester, since porosity is related to speed of absorbency in this instance. Plastic base surface paper typically has a Gurley porosity (20 oz) in the range 10 to 25 sec/100 ml preferably 20 to 25 sec/100 ml, if for use in a high-pressure laminate, or in the range 15 to 50 sec/100 ml if for use in a low-pressure laminate, although values of 70 sec/100 ml or more are acceptable.
  • The requirement for plastic base surface paper and overlay paper to be absorbent results in a relatively rough paper surface which is not particularly suitable for high quality gravure printing. There are two main problems. First, the rough surface makes it difficult to obtain complete print coverage from every gravure cell. Second, the absorbent nature of the paper allows ink to penetrate into the sheet and print intensity is therefore reduced.
  • Despite these problems, plastic base surface and overlay paper can be printed to a high standard, provided larger quantities of ink are used than would be needed on a good printing surface or provided a lower absorbency is acceptable.
  • It might be thought that the above-described problems could be simply.overcome by the application of a pigment coating such as is commonly used in the manufacture of high quality printing papers. However, such coatings enhance printability not only by increasing surface smoothness, which would be acceptable in plastic base surface and overlay papers, but also by decreasing absorbency to an extent which would not be acceptable in such papers. Pigment-coated art papers, for example, typically have a Klemm absorbency below 5 mm/10 minutes, which is well below that required in plastic base surface and overlay papers.
  • However, it has now been found that, contrary to previous expectations in the art, the printability of plastic base surface and overlay papers can be improved without unacceptably reducing the capacity of the paper to absorb impregnating.resins by applying to the paper a coating containing a pigment and a binder.
  • Accordingly, the present invention provides in a first aspect a process for the manufacture of a decorative laminate comprising the steps of applying a liquid coating composition comprising a pigment and a binder to a surface of a previously formed and dried decorative laminate surface or overlay paper to give a coatweight when dry of up to 10gm-2 on said surface, the resulting coated paper having a Gurley porosity (20 oz) of about 10 to 70 sec/100 ml, printing a desired pattern on said coated surface of said paper, impregnating the resulting printed paper with a thermo-setting resin and laminating the impregnated paper to a support therefor under conditions effective to cure the resin, thereby to produce said decorative laminate.
  • In a second aspect, the present invention provides a decorative laminate surface or overlay paper carrying a coating composition comprising a pigment and a binder on a surface thereof at a coatweight of up to 10gm-2, said paper having a Gurley porosity of about 10 to 70 sec/100 ml and said pigment being kaolin, calcium carbonate, titanium dioxide or barium sulphate.
  • In order to ensure that the absorbency of the present plastic base surface or overlay paper is at a suitable level and that the surface smoothness of the coating is at an optimum level, the coatweight and the weight ratio of pigment to binder must be chosen carefully. The preferred dry coatweight is in the range of from 2.5 to 3gm-2. The weight ratio of pigment to binder in the coating is preferably in the range 5:1 to 1:1, more preferably from 2.5:1 to 3.5:1. The Gurley porosity (20 oz ) of the coated paper is preferably in the range 20 to 50 sec/100 ml.
  • The pigment is preferably one having a Mchs hardness of less than 7, for example kaolin, calcium carbonate in precipitated or ground form, titanium dioxide or barium sulphate. Pigments having a Mohs hardness greater than 7, such as alumina or hydrated alumina, various natural or synthetic alumino-silicates or silica or silica gel may however be used. The binder may be starch, casein, latex, polyvinyl alcohol or an aminoplast or other cross-linking resin.
  • Preferably the liquid coating composition comprising the pigment and binder is applied by size press treatment, although other coating techniques may be used, for example air-knife coating. It will be appreciated that size press treatment normally results in a coating being applied to both surfaces of the paper web.
  • Once the decorative laminate surface or overlay paper has been coated it may be calendered before being impregnated.
  • The present plastic base surface or overlay paper enables an improvement in print quality to be obtained as a result of more complete ink transfer from the gravure cells and of less ink absorption. It also permits a reduction in ink usage for a print of specified quality, or, for the same ink usage affords a better print than would be obtained on the same paper if it were not coated.
  • The invention will now be described with reference to the following examples :
    • EXAMPLE 1
  • A sheet of plastic base surface paper having a grammage of 100gm-2 was size press coated with an aqueous coating containing a mixture of kaolin (supplied by English China Clays under the designation "Supreme"), esterified starch and melamine-formaldehyde resin in a weight ratio of 3:1:0.001. The coating was then dried, the dry coatweight being 3gm-2. The absorbency of both the coated and the uncoated paper was found to be 30mm/10 min. The Gurley porosity (20 oz) of the coated paper was found to be 24 sec/ 100 ml, and that of the uncoated paper was 18 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the same-amount of ink using a gravure printing process. On examination of the printed papers, it was'found.that the optical reflectivity of the uncoated paper (as measured by an Elrepho opacimeter) was 20% whereas that of the coated paper was 10%. Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.
    • EXAMPLE 2
  • A sheet of plastic base surface paper having a grammage of 120gm-2 was size press coated with an aqueous coating containing a mixture of barium sulphate (precipitated), esterified starch and melamine formaldehyde resin in a weight ratio of 3:1:0.001. The coating was then dried and calendered, the dry coatweight being 7gm-2. The Gurley porosity (20 oz) of the coated paper was found to be 26 sec/100 ml, and that of the uncoated paper was 14 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the same amount of ink using a gravure printing nrocess. On examination of the printed papers, it was found that the optical reflectivity of the uncoated paper (as measured by an Elrepho opacimeter) was 20% whereas that of the coated paper was 18%. Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.
    • EXAMPLE 3
  • A sheet of plastic base surface paper having a grammage of 120gm-2 was size press coated with an aqueous coating containing a mixture of titanium dioxide (supplied by British Titan Products, under the designation ALF), esterified starch and melamine formaldehyde resin in a weight ratio of 3:1:0.001. The coating was then dried and calendered, the dry coatweight being 6.6gm . The Gurley porosity (20 oz) of the coated paper was found to be 69 sec/100 ml, and that of the uncoated paper was 14 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the same amount of ink using a gravure printing process. On examination of the printed papers, it was found that the optical reflectivity of the uncoated paper (as measured by an Elrepho opacimeter) was 20% whereas that of the coated paper was 17%. Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.
    • EXAMPLE 4
  • A sheet of plastic base surface paper having a grammage of 120gm-2 was size press coated with an aqueous coating containing a mixture of calcium carbonate (under the designation Hydrocarb) esterified starch and melamine formaldehyde resin in a weight ratio of 3:1:0.001. The coating was then dried and calendered, the dry coatweight being 5.5gm-2. The Gurley porosity (20 oz) of the coated paper was found to be 50 sec/100 ml, and that of the uncoated paper was 14 sec/100 ml.
  • Both the coated paper and a sample of uncoated plastic base surface paper were then printed with the -same amount of ink using a gravure printing process. On examination of the printed papers, it was found that the optical reflectivity of the uncoated paper (as measured by an Elrepho opacimeter) was 20% whereas that of the coated paper was 17%. Both papers absorbed a sufficient amount of resin to make satisfactory laminates and the colour or shade of the unprinted surface of a laminate containing the coated paper was judged to be the same as that of a laminate containing uncoated paper.

Claims (14)

1. A process for the manufacture of a decorative laminate comprising the steps of applying a liquid coating composition comprising a pigment and a binder to a surface of a previously formed and uried decorative laminate surface or overlay paper to give a coatweight when dry of up to 10gm-2 on said surface, the resulting coated paper having a Gurley porosity (20 oz) of about 10 to 70 sec/100 ml, printing a desired pattern on said coated surface of said paper, impregnating the resulting printed paper with a thermo-setting resin and laminating the impregnated paper to a support therefor under conditions effective to cure the resin, thereby to produce said decorative laminate.
2. A process for the manufacture of a decorative laminate as claimed in claim 1 wherein the coating is applied to said surface of the previously formed and dried decorative laminate surface or overlay paper at a coatweight of 2.5 to 3gm -2
3. A process for the manufacture of a decorative laminate as claimed in claim 1 wherein the Klemm absorbency of the plastic base surface paper is in the range 25 to 65 mm/10 min.
4. A process for the manufacture of a decorative laminate as claimed in claim 1 wherein the pigment has a Mchs hardness of less than 7.
5. A process for the manufacture of a decorative laminate as claimed in claim 4 wherein the pigment is one of kaolin, calcium carbonate, titanium dioxide or barium sulphate.
6. A process for the manufacture of a decorative laminate as claimed in claim 1 wherein the weight ratio of pigment to binder is in the range 5:1 to 1:1.
7. A process for the manufacture of a decorative laminate as claimed in claim 6 wherein the ratio of pigment to binder is in the range 2.5:1 to 3.5:1.
8. A process for the manufacture of a decorative laminate as claimed in claim 1 wherein the coating is applied by size press treatment.
9. A process for manufacture of a decorative laminate as claimed in claim 1 wherein the binder is one of starch, casein, latex, polyvinyl alcohol, or an aminoplast or other cross-linking resin.
10. A decorative laminate as produced by the process as claimed in claim 1.
11. A decorative laminate surface or overlay paper carrying a coating composition comprising a pigment and a binder on a surface thereof at a coatweight of up to 10gm-2, said paper having a Gurley porosity of about 10 to 70 sec/100 ml and said pigment being kaolin, calcium carbonate, titanium dioxide or barium sulphate.
12. A paper for use in the manufacture of a decorative laminate as claimed in claim 11 wherein said coating composition is present at a coatweight of 2.5 to 3gm-2.
13. A paper for use in the manufacture of a decorative laminate as claimed in claim 11 wherein the weight ratio of pigment to binder is in the range 5:1 to 1:1.
14. A paper for use in the manufacture of a decorative laminate as claimed in claim 13 wherein the weight ratio of pigment to binder is in the range 2.5:1 to 3.5:1.
EP19810305807 1980-12-12 1981-12-09 Process for the manufacture of decorative laminates Expired EP0054405B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8039933 1980-12-12
GB8039933 1980-12-12

Publications (2)

Publication Number Publication Date
EP0054405A1 true EP0054405A1 (en) 1982-06-23
EP0054405B1 EP0054405B1 (en) 1985-02-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810305807 Expired EP0054405B1 (en) 1980-12-12 1981-12-09 Process for the manufacture of decorative laminates

Country Status (5)

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EP (1) EP0054405B1 (en)
JP (1) JPS57501950A (en)
CA (1) CA1170513A (en)
DE (1) DE3168974D1 (en)
WO (1) WO1982002067A1 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122589A2 (en) * 1983-04-16 1984-10-24 VITS-Maschinenbau GmbH Process and apparatus for manufacturing sheets for coating purposes, in particular decorative sheets for coating hard fibre, chip or wood board
GR1000651B (en) * 1990-12-27 1992-09-25 Roltex A E Method and device for producing paper material
WO1997015430A1 (en) * 1995-10-23 1997-05-01 Maecher Pictureproducts Pty. Limited Laminated products
WO1997017214A1 (en) * 1995-11-10 1997-05-15 Perstorp Ab A process for providing products with a hard and decorative surface
AU684426B2 (en) * 1995-10-23 1997-12-11 Maecher Pictureproducts Pty Limited Laminated products
WO1999001296A1 (en) * 1997-07-02 1999-01-14 M. Kaindl Decorated laminate material and method for its production
EP1044822A1 (en) * 1999-04-13 2000-10-18 Technocell Dekor GmbH & Co. KG Decorative base paper with ink jet ink accepting layer
WO2004007215A1 (en) * 2002-07-17 2004-01-22 Mw Custom Papers, Llc Papers for use in decorative laminates and methods of making the same
FR2870265A1 (en) * 2004-05-13 2005-11-18 Arjowiggins Soc Par Actions Si DECORATIVE PAPER AND DECORATIVE LAMINATE COMPRISING THE SAME
WO2009097986A1 (en) 2008-02-07 2009-08-13 Hülsta-Werke Hüls Gmbh & Co. Kg Paper layer for producing a planar printed or printable component
EP2233287A1 (en) * 2009-03-24 2010-09-29 Hülsta-Werke Hüls GmbH & CO. KG Method for producing board bodies with printed sheets using the gravure printing method
US10124603B2 (en) 2014-02-06 2018-11-13 Unilin, Bvba Methods for manufacturing panels having a decorative surface
US10214028B2 (en) 2012-08-06 2019-02-26 Unilin, Bvba Method for manufacturing panels having a decorative surface
US10471769B2 (en) 2014-01-10 2019-11-12 Unilin, Bvba Method for manufacturing panels having a decorative surface
EP3496945A4 (en) * 2016-08-10 2020-04-01 Pressing Developments, L.L.C. Stainable melamine laminate products, compositions, and methods of manufacture
US11794460B2 (en) 2018-01-04 2023-10-24 Flooring Industries Limited, Sarl Methods for manufacturing panels

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06173199A (en) * 1992-12-04 1994-06-21 Tomoegawa Paper Co Ltd Bactericidal paper
JP2599247B2 (en) * 1994-03-28 1997-04-09 南海プライウッド株式会社 Decorative sheet and veneer

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB653531A (en) * 1948-02-14 1951-05-16 Herbert John Mallabar Improvements in the manufacture of decorative laminated sheet material
FR1048836A (en) * 1949-06-30 1953-12-24 Oxvar Ltd Manufacturing process of decorative laminated pieces
US3578483A (en) * 1969-05-14 1971-05-11 Formica Corp Process for improving the printability of the surface of alpha-cellulose paper to be used as the decorative sheet in a decorative laminate
US3798111A (en) * 1972-03-24 1974-03-19 Mead Corp Multiple layer decorated paper,laminates prepared therefrom and process
AT332107B (en) * 1974-09-25 1976-09-10 Isovolta METHOD FOR MANUFACTURING LAMINATE DECORATIVE PANELS
FR2376746A1 (en) * 1977-01-10 1978-08-04 Exxon Research Engineering Co SHEETS FOR DECORATIVE ABRASION RESISTANT LAMINATES AND THEIR METHODS
GB2033249A (en) * 1978-11-09 1980-05-21 Nevamar Corp Abrasion-resistant Laminate

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5245408B2 (en) * 1973-12-29 1977-11-16

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB653531A (en) * 1948-02-14 1951-05-16 Herbert John Mallabar Improvements in the manufacture of decorative laminated sheet material
FR1048836A (en) * 1949-06-30 1953-12-24 Oxvar Ltd Manufacturing process of decorative laminated pieces
US3578483A (en) * 1969-05-14 1971-05-11 Formica Corp Process for improving the printability of the surface of alpha-cellulose paper to be used as the decorative sheet in a decorative laminate
US3798111A (en) * 1972-03-24 1974-03-19 Mead Corp Multiple layer decorated paper,laminates prepared therefrom and process
AT332107B (en) * 1974-09-25 1976-09-10 Isovolta METHOD FOR MANUFACTURING LAMINATE DECORATIVE PANELS
FR2376746A1 (en) * 1977-01-10 1978-08-04 Exxon Research Engineering Co SHEETS FOR DECORATIVE ABRASION RESISTANT LAMINATES AND THEIR METHODS
GB2033249A (en) * 1978-11-09 1980-05-21 Nevamar Corp Abrasion-resistant Laminate

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0122589A2 (en) * 1983-04-16 1984-10-24 VITS-Maschinenbau GmbH Process and apparatus for manufacturing sheets for coating purposes, in particular decorative sheets for coating hard fibre, chip or wood board
EP0122589A3 (en) * 1983-04-16 1984-11-28 Vits-Machinenbau Gmbh Process and apparatus for manufacturing sheets for coating purposes, in particular decorative sheets for coating hard fibre, chip or wood board
GR1000651B (en) * 1990-12-27 1992-09-25 Roltex A E Method and device for producing paper material
WO1997015430A1 (en) * 1995-10-23 1997-05-01 Maecher Pictureproducts Pty. Limited Laminated products
AU684426B2 (en) * 1995-10-23 1997-12-11 Maecher Pictureproducts Pty Limited Laminated products
WO1997017214A1 (en) * 1995-11-10 1997-05-15 Perstorp Ab A process for providing products with a hard and decorative surface
WO1999001296A1 (en) * 1997-07-02 1999-01-14 M. Kaindl Decorated laminate material and method for its production
EP1044822A1 (en) * 1999-04-13 2000-10-18 Technocell Dekor GmbH & Co. KG Decorative base paper with ink jet ink accepting layer
US6706372B2 (en) 1999-04-13 2004-03-16 Technocell Dekor Gmbh & Co. Kg Decorative base paper with an ink-jet receiving layer
WO2004007215A1 (en) * 2002-07-17 2004-01-22 Mw Custom Papers, Llc Papers for use in decorative laminates and methods of making the same
FR2870265A1 (en) * 2004-05-13 2005-11-18 Arjowiggins Soc Par Actions Si DECORATIVE PAPER AND DECORATIVE LAMINATE COMPRISING THE SAME
WO2005116337A1 (en) 2004-05-13 2005-12-08 Arjowiggins Method of producing decorative paper and decorative laminate comprising such decorative paper
US9567713B2 (en) 2004-05-13 2017-02-14 Munksjo Arches Method of producing decorative paper and decorative laminate comprising such decorative paper
WO2009097986A1 (en) 2008-02-07 2009-08-13 Hülsta-Werke Hüls Gmbh & Co. Kg Paper layer for producing a planar printed or printable component
WO2010108568A1 (en) * 2009-03-24 2010-09-30 Hülsta-Werke Hüls Gmbh & Co. Kg Method for producing panels comprising printed sheets that have been printed by rotogravure
EP2233287A1 (en) * 2009-03-24 2010-09-29 Hülsta-Werke Hüls GmbH & CO. KG Method for producing board bodies with printed sheets using the gravure printing method
US10214028B2 (en) 2012-08-06 2019-02-26 Unilin, Bvba Method for manufacturing panels having a decorative surface
US10549550B2 (en) 2012-08-06 2020-02-04 Unilin, Bvba Method for manufacturing panels having a decorative surface
US11987044B2 (en) 2012-08-06 2024-05-21 Unilin, Bv Method for manufacturing panels having a decorative surface
US10807385B2 (en) 2012-08-06 2020-10-20 Unilin, Bvba Method for manufacturing panels having a decorative surface
US10814648B1 (en) 2012-08-06 2020-10-27 Unilin, Bvba Method for manufacturing panels having a decorative surface
US11446938B2 (en) 2012-08-06 2022-09-20 Flooring Industries Limited, Sarl Method for manufacturing panels having a decorative surface
US11465439B2 (en) 2014-01-10 2022-10-11 Flooring Industries Limited, Sarl Method for manufacturing panels having a decorative surface
US10471769B2 (en) 2014-01-10 2019-11-12 Unilin, Bvba Method for manufacturing panels having a decorative surface
US10906349B2 (en) 2014-01-10 2021-02-02 Unilin Bv Method for manufacturing panels having a decorative surface
US11878548B2 (en) 2014-01-10 2024-01-23 Flooring Industries Limited, Sarl Method for manufacturing panels having a decorative surface
US10124603B2 (en) 2014-02-06 2018-11-13 Unilin, Bvba Methods for manufacturing panels having a decorative surface
US11613133B2 (en) 2014-02-06 2023-03-28 Unilin Bv Methods for manufacturing panels having a decorative surface
US10994555B2 (en) 2014-02-06 2021-05-04 Unilin Bv Methods for manufacturing panels having a decorative surface
EP3496945A4 (en) * 2016-08-10 2020-04-01 Pressing Developments, L.L.C. Stainable melamine laminate products, compositions, and methods of manufacture
US12109794B2 (en) 2016-08-10 2024-10-08 Pressing Developments, L.L.C. Stainable melamine laminate products, compositions, and methods of manufacture
US11794460B2 (en) 2018-01-04 2023-10-24 Flooring Industries Limited, Sarl Methods for manufacturing panels

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JPS57501950A (en) 1982-11-04
CA1170513A (en) 1984-07-10
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DE3168974D1 (en) 1985-03-28
EP0054405B1 (en) 1985-02-13

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