Methods for manufacturing laminate, impregnated decorative paper and laminate obtained thereby
AssigneeUnilin BV
InventorsBernard Thiers, Veronique Hoflack, Caroline Van De Populiere, Benjamin Clement, Benny Schacht, Christof Vandevoorde
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Abstract
A decorative paper of a roll of decorative paper is laminated on paper in a continuous pressing operation under pressure and at elevated temperature by means of an aminoplast resin. The roll of decorative paper comprises serially differing decorative finishes. After the continuous pressing operation, the laminate can be divided into sheets. A method is also described for impregnating, with aminoplast resin, decorative paper that comprises serially differing decorative finishes.
Claims19
A method for manufacture of impregnated decorative paper, for use in the manufacture of High-Pressure Laminate or Continuous Pressure Laminate,
- wherein the method comprises the steps:
- the provision of a roll of decorative paper that comprises serially differing decorative finishes, by serial addition of various decorative finishes on the roll of paper;
- wherein at least a number of the serially differing decorative finishes are each located on a separate length of decorative paper;
- wherein each of these lengths of decorative paper are joined together serially;
- impregnation of the paper of the roll of decorative paper with an aminoplast resin;
- the optional coating of a decorative side of the paper with a thermosetting resin, or with polyurethane acrylate or with a polyester resin;
- the rolling up of the impregnated decorative paper, wherein a roll of decorative paper impregnated with aminoplast resin is obtained,
- wherein this impregnated decorative paper comprises serially differing decorative finishes,
- wherein these decorative finishes each consist of a decorative printing and/or of a uniform dye application;
- or
- wherein after impregnation the impregnated decorative paper is cut or chopped into sheets.
A method for producing a laminate, wherein a roll of decorative paper is fed into a continuous pressing operation,
- wherein the decorative paper of the roll of decorative paper is laminated on paper by means of an aminoplast resin, under pressure and at elevated temperature in the continuous pressing operation,
- wherein the roll of decorative paper comprises serially differing decorative finishes,
- wherein at least a number of the serially differing decorative finishes are each located on a separate length of decorative paper,
- wherein each of these lengths of decorative paper are joined together serially;
- wherein these decorative finishes each consist of a decorative printing and/or a uniform dye application;
- wherein the decorative paper is impregnated with a melamine resin,
- wherein the decorative paper before impregnation has a weight between 40 and 130 grams per square meter.
A method for producing laminate,
- wherein the method comprises a continuous pressing operation wherein the laminate is produced,
- wherein successive sheets of decorative paper of discrete length are fed into the continuous pressing operation, by cutting or chopping of sheets from a roll of decorative paper;
- wherein at least two successive sheets of decorative paper are provided with a different printed and/or dyed decorative finish,
- wherein a continuous length of substrate is fed into the continuous pressing operation;
- wherein in the continuous pressing operation the various successive sheets of decorative paper are laminated successively by means of a resin on the continuous length of substrate,
- wherein a release film is fed in the continuous pressing process, which provides pressing of a texture into the laminate produced with the various successive sheets of decorative paper,
- wherein the various successive sheets of decorative paper at an inlet of the continuous pressing process are placed on the substrate in such a way that these sheets are fed on and together with the substrate into the continuous pressing operation and so that in the continuous pressing operation the release film presses the texture in register with the printing on the sheets of decorative paper.
Dependencies are inferred from the claim text.