Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
  • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
  • B27N3/06—Making particle boards or fibreboards, with preformed covering layers, the particles or fibres being compressed with the layers to a board in one single pressing operation
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
  • E06B3/70—Door leaves
  • E06B3/7001—Coverings therefor; Door leaves imitating traditional raised panel doors, e.g. engraved or embossed surfaces, with trim strips applied to the surfaces
• • 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
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
  • Y10T156/1039—Surface deformation only of sandwich or lamina [e.g., embossed panels]
  • Y10T156/1041—Subsequent to lamination

Definitions

• the present invention relates to a method of producing imitated panelled doors and similar panelling elements / which appear with a frame portion and a front surface plane, and one or more partial area portions with recessed surface planes.
• panelling element consisted of a frame of joined board portions forming one or more openings in which were inserted infilling panels, the edge portions of these as well as optionally the adjacent edges of the frame board portions being profiled for forming characteristic subframe patterns.
• the other sides of the infilling panels may well be flush with the outer sides of the frame portion, but in the transition areas along the edges of the panels the outer side will be recessed compared to the plane of the outer side of the frame portion.
• the invention is based on the consideration that the infilling panels or at least the characteristic border portions between these and the surrounding frame portion may very well be produced by a simple die pressing of an originally planar plate member when this is adapted to resist the die pressing without the occurring of visually unacceptable deformations in the surface of the plate manner.
• this condition is highly essential in practice, and the problem is that an acceptable surface made from either a wooden veneer or paper suitable for painting is difficult to shape by die pressing. It is possible that the very idea of a pattern embossing is not new, as e.g. a chip board is locally compressible, but prior attempts in this direction have not lead to practically usable results.
• the panelling element is constructed in a manner known per se by covering a frame structure with a relatively thin cover plate, but whereby it has been found possible to die press such a cover plate, which is specially produced for the purpose for obtaining an outer surface appearance which perfectly corresponds to the said panelling pattern. It is hereby essential that the thin plate member can be die pressed while being coated by veneer or paper and that the plate therefore, may be a wood-like character so that it does not later show warping tendencies.
• the invention is primarily characterized by the combination of method steps which is indicated in the characterizing clause of claim 1.
• the invention also provides for a new plate material, adapted to the purpose or more correctly a method of producing such covering plate members based on such a pre-fabricated plate material, and this method is more specifically indicated in claim 2.
• the basis is. hereby a plate material having a leather-like character, whereby it is practically completely unusable until it is finished by the indicated pressing and heating procces.
• the plate material is willingly deformable by the die pressing because its built-in binding agent is not finally activated until the pressing operation is finished, but still in direct connection herewith.
• Fig. 1 is a perspective view of a plate member before pressing between relief-forming die pressing plates
• Fig. 2 is a cross sectional view of the pressed plate member
• Fig. 3 is a cross sectional view of a panel element.
• a plate member 2 placed between two die pressing plates 4 and 6 embodied as matrix and patrix, respectively, for the pressing of the plate 2 with a pattern similar to elements of the infilling panel type.
• the plate member is used as a cover plate member on a frame work 10, Fig. 3, a corresponding or optionally a planar plate member 12 being placed on the other side of the framework, whereby a door, a furniture door or other panel element is obtained, which at least on its front side appears with the particular panel pattern.
• the plate member 2, as indicated in Fig. 2 consists of a base plate member 14 having a coating 16 of veneer or paper or both sides. These coating layers are secured to the base plate by means of so-called glue sheets 18, which are activated and set in a known manner by heating. By the mounting of the coating layers, however, only so much heat is supplied that .the sheets bind moderately without being cured.
• the base plate 14 is a special product which will only exceptionally be suitable for other purposes.
• the plate member is produced as an only slightly compressed element of wood fibre mass or chip mass, e.g. either a very thin chip board or a plate member of the Hasonite type, which at the production is pressed to a bulk density of 400-600 kg/m , preferably 500 kg/m , while usual chip boards or masonite plates have a bulk density of 700-800 kg/m .
• the plate member is produced with a low degree of heat supply, so that the binding agent in the material, consisting of a heat setting glue, such as a urea or phenol give only partially activated and thus not cured.
• the base plate member 14 at least before the veneesing, appears as a leather-like bendable plate member. It is somewhat stiffened by the veneering, but still without being hardened. Its thickness can be of appx. 3-4 mm, while the coating layers 16 should not be thicker than appx. 0,8 mm, e.g. a 0,6 mm veneer. Before the pressing the veneer layers are smoothened, and immediately before the pressing they are steamed for some 30 seconds at 100 C.
• the pressing takes place with a gradual building up of a pressing pressure of appx. 20 kg/cm during appx. 2 minutes. Simultaneously, care is taken to heat the plate, through the pressing plates 4 and 6 as consisting e.g. of aluminium, such that a temperature of some 130 C or another setting temperature for the binding agents will be achieved sufficiently late for the binding agents not to harden until after the building of the final, pressing pressure, e.g. not until some 30 seconds thereafter, whereby it is ensured that the deformation of the plate is fully accomplished while it is still deformable.
• the base plate member 14 is generally compressed 10-20%, preferably 12-15%. Under the said conditions it is quite possible to press a depress relief patterns with a height or depth of at least 6-7 mm, without a normal wooden veneer tending to burst, and when the binding agent is both the base plate member 14 and the glue sheets or films 18 is cured by the final heating a very strong final product is obtained, which will be further strengthened by the produced relief pressing. '

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Applications Claiming Priority (2)

Publications (1)

Family

ID=8135283

Family Applications (1)

Country Status (7)

Cited By (11)

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Citations (4)

Family Cites Families (4)

• 1985
  • 1985-10-10 DK DK463085A patent/DK153640C/da not_active IP Right Cessation
• 1986
  • 1986-10-10 EP EP86906295A patent/EP0243423B1/en not_active Expired - Lifetime
  • 1986-10-10 US US07/067,304 patent/US4812188A/en not_active Expired - Fee Related
  • 1986-10-10 WO PCT/DK1986/000114 patent/WO1987002407A1/en active IP Right Grant
  • 1986-10-10 DE DE8686906295T patent/DE3677003D1/de not_active Expired - Lifetime
  • 1986-10-10 AU AU65201/86A patent/AU6520186A/en not_active Abandoned
• 1987
  • 1987-06-09 FI FI872573A patent/FI84851C/fi not_active IP Right Cessation

Patent Citations (4)

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