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
  • D21H27/28—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 treated to obtain specific resistance properties, e.g. against wear or weather
• • 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
  • B44C5/043—Ornamental plaques, e.g. decorative panels, decorative veneers containing wooden elements
• • 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
  • B44C5/0476—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 with abrasion resistant properties

Definitions

• the invention relates to a process for the production of laminate coatings, which are particularly suitable and intended for floor slabs, which has a decorative paper impregnated with amino resin and an abrasion-resistant covering layer arranged thereon with particulate fine aluminum oxide (corundum).
• the invention also relates to such a laminate coating.
• a viscous mixture which contains fine-grained aluminum oxide or corundum, which determines the abrasion resistance of the finished product, is applied to the paper soaked and dried with melamine resin.
• the fine-grained corundum particles are more or less uniformly distributed in the covering layer formed from the viscous mixture and are therefore also on the surface of the covering layer.
• a further and much more significant disadvantage is that the press plates or press belts used for the mechanical finishing of the laminate coatings are damaged by the corundum particles located on the surface of the laminates due to abrasion, which leads to a relatively rapid graying of the surfaces of the finished laminate. Coatings leads. Therefore, the press plates or press belts made of sheet metal used when using the known production techniques have to be reworked or re-ground relatively frequently in order to compensate for a dulling of their surfaces. The service life of the press plates or press belts is accordingly relatively short.
• the invention has for its object to make the production of abrasion-resistant laminate coatings more economical than before.
• a laminate coating for floor slabs or similar applications can be produced in one pass, which die Abrasion resistance of the particles of fine aluminum oxide or corundum producing the laminate coating are encapsulated on the surface of the coating in such a way that they cannot damage the press plates or press belts of the machines or presses used to produce the laminate coatings.
• the covering layer of fiber material containing melamine resin applied to the impregnated decorative paper after sprinkling the particulate aluminum oxide is transparent, so that the decor of the decorative paper is clearly visible. Because the particles producing the abrasion resistance of the end product are covered during the production of the laminate coating, graying and therefore a deterioration in the surface of the laminate coating produced is not to be expected even after prolonged use of the press plates or press belts of the machine or press.
• the surface of the laminate coating produced according to the invention remains clear because the fiber fleece applied as an encapsulation for the corundum particles does not change or impair the visibility of the decor of the decorative paper, but on the other hand the press plates or press tapes used for the Manufacture of the laminate coating used presses or other manufacturing machines protects against premature abrasion.
• the laminate coatings according to the invention can be applied, for example, to chipboard or fiberboard, which are previously provided on the top and / or the bottom with a retraction position which is determined against warping.
• a decorative paper with a mass per unit area of 70 g / m 2 is first impregnated with melamine resin in an immersion bath, the mass after drying being 140 g / m 2 . Corundum is sprinkled on the still moist paper web in an amount of 20 g / m 2 . The paper is then temporarily dried at a temperature of 180 ° C to a moisture content of 15%.
• a nonwoven fabric with a basis weight of 80 g / m 2 consisting of 80% melamine resin and 20% cellulose fibers with a length of 60 ⁇ m is then applied to this paper web. Then the final drying takes place at 180 ° C up to a humidity of 6.0 to 6.5%.
• the impregnate produced in this way is pressed in a short-cycle press at a temperature of 205 ° C., a specific pressure of 2.5 MPa and a pressing time of 20 s on an HDF carrier plate.
• the laminate floor covering obtained in this way fulfills the characteristic values according to the EN 438 standard and has an abrasion value IP of 10,000.
• a decorative paper with a basis weight of 80 g / m 2 is impregnated with a melamine resin, the basis weight after the subsequent drying being 150 g / m 2 .
• Fine-grained aluminum oxide in an amount of 8 g / m 2 is sprinkled on the still moist paper web.
• the paper web is then dried at 210 ° C. to a moisture content of 12%.
• a fleece of 40 g / m 2 consisting of 85% melamine resin and 15% glass fibers with a length of 3 mm and a diameter of 10 ⁇ m is applied.
• the further procedure corresponds to example 1.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Wood Science & Technology (AREA)
• Laminated Bodies (AREA)
• Floor Finish (AREA)
• Paper (AREA)
• Application Of Or Painting With Fluid Materials (AREA)

Priority Applications (14)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8167201

Family Applications (1)

Country Status (14)

Cited By (56)

Families Citing this family (8)

Citations (7)

Family Cites Families (1)

• 1999
  • 1999-01-26 CN CN99803929.2A patent/CN1094840C/zh not_active Expired - Lifetime
  • 1999-01-26 DE DE59907294T patent/DE59907294D1/de not_active Expired - Lifetime
  • 1999-01-26 DK DK99908834T patent/DK1068083T3/da active
  • 1999-01-26 PL PL99343240A patent/PL188357B1/pl unknown
  • 1999-01-26 AT AT99908834T patent/ATE251551T1/de active
  • 1999-01-26 RU RU2000124392/12A patent/RU2213668C2/ru active
  • 1999-01-26 SI SI9930449T patent/SI1068083T1/xx unknown
  • 1999-01-26 ES ES99908834T patent/ES2205781T3/es not_active Expired - Lifetime
  • 1999-01-26 AU AU28307/99A patent/AU2830799A/en not_active Abandoned
  • 1999-01-26 CZ CZ20003383A patent/CZ300493B6/cs not_active IP Right Cessation
  • 1999-01-26 SK SK1401-2000A patent/SK285185B6/sk not_active IP Right Cessation
  • 1999-01-26 EP EP99908834A patent/EP1068083B1/de not_active Expired - Lifetime
  • 1999-01-26 WO PCT/EP1999/000606 patent/WO2000044576A1/de active IP Right Grant
• 2001
  • 2001-08-17 HK HK01105827A patent/HK1035168A1/xx not_active IP Right Cessation

Patent Citations (7)

Non-Patent Citations (1)

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