FR2485596A1 - PROCESS FOR REFLECTING ELEMENTS AND SURFACES IN WOOD USED OR DEFORMED, IN PARTICULAR STAIRS MARKETS - Google Patents

Abstract

THE PROCESS OF THE INVENTION CONCERNS THE REFECTION OF WASTED AND DEFORMED WOODEN SURFACES, ALLOWING REFURBISHMENT WITHOUT DISMANTLING. IT CONSISTS OF FLOWING BETWEEN FLEXIBLE FORMWORKS 1 A LOADING MATERIAL 2 LOCKING BETWEEN THE WOOD FIBERS 3, AFTER PRETREATMENT OF THE INTERFACE 4 AND REALIZING BOTH THE LEVELING AND NEW MOLDING OF THE OLD WOODEN ELEMENTS . AMONG THE MOST INTERESTING APPLICATIONS OF THE INVENTION MAY BE CITED THE REFECTION OF WASTE AND SPILLED WOODEN STAIRCASE STEPS, AS WELL AS THE TREATMENT OF BATHROOM FLOORS.

Description

2485S596

  The present invention relates to a method of repairing surfaces

  used wood, for example stair steps, in their geometric form.

  original equipment by relining "in situ" between formwork and after

  wood preparation of the interface.

  The traditional restoration of new wood, whether total or of interest only to the nose of the step, is still practiced but very expensive; when the structure of the staircase has played as a result of the settlement, all the steps are found spilled also the replacement of these does not correct this defect. There are techniques borrowed from floor coverings, such as vitrifications, glued plastics,

  the profiled nose-steps reported, but it is a film repair

  This restores the aesthetics of a dilapidated staircase. by masking the

  flatness defects, without remedy. It is also known that all coated

  limited to one side of a wooden element gives rise to variations

  affecting the flatness of the latter and the strength of the

  is lying. The process differs in that it provides a solution to the problem of flatness, and the hanging on the wood; moreover, it corrects the slope of the steps and completes the damaged nosings with the same material of reloading. It solves by a single operation the

  structural and aesthetic defects of used stairs.

  The method consists of treating the surface of the steps, which are generally made of hardwood, and which are saturated with waxes or encrusted with dust, by means of a coarse and then light planing, performed first at

  hand rape in the direction of wood fibers (Figure 1), and then

  Chainsaw (Figure 2) equipped with a double row of alternating gouges (Figure 3) -

  in a direction intersecting with that of the wood, the two operations aiming at partially lifting the fibers on the surface thus creating a roughened-very rough face to allow the material of reloading to become one with the

  market. After delimiting the area to be reloaded, taking into account possible

  tilts cant take, a form is formed on the one hand using flexible plastic profiles or angles including polyvinyl chloride, cut to length and fixed by nailing along the nosing and the return side side of the limon ( Figure 4) and on the other hand using both

  other faces such as the riser and the wall of the cage as a complete part

  formwork (figure 5. A and B).

  - The space or volume to be refilled, defined by said formwork, is filled by gravity in a single casting, a very fluid reloading material whose properties after hardening are close to those of wood (Figure 6). Several specific formulas have been developed to constitute

2 2485596

  the reloading material; they will appeal as appropriate to polyester,

  epoxy and generally to catalyzed setting resins. A standard composition

  dard can use fireproof, loaded, reinforced and pigmented polyesters in the mass. The hardener of the resin is incorporated just before casting; it is set to cause gelling in less than five minutes and complete hardening in one hour, - duration beyond which the

  can be re-circulated after stripping is facilitated by the applica-

  on the inner side of the angles of composite stripping products

  emulsion of soluble polyvinyl chloride, silicones or waxes.

  In addition to its fire resistance (classification M.1) and its rigidity (for laying carpet) the mixture is reinforced with fibers to ensure the mechanical strength of the cantilevered nose-bridge and to give resistance structural lengthwise prohibiting any detachment, because at this location the charging material wraps-the nose-step over its entire length (Figures 7 and 8). Said reloading gives the step a flat and level surface that can be further improved in terms of safety by a non-slip nose-of-step, either adhesive-type, or constituted by a

  deposition of solid glass beads bound with the resin (Figures 9 and 10).

  The method which is the subject of the invention can be applied to the repair of worn wooden stairs that are found in most old buildings, whether they be residential or public use, like those in schools, and administrative buildings receiving the public such as railway stations,

the posts, the town halls, etc ...

  It will also find interesting applications in wooden flooring such as damaged parquet or protect against the action of water, for example the modernization of hotel rooms that we can

  thus equip with a corner room of water.

  The implementation of the process may be performed by a skilled artisan

  operator working alone, who will use portable tools such as

  light chainsaw, graters, ready-to-use reloading material

  plastic profiles for formwork.

Claims (7)

  1. A method of repairing worn wood surfaces, for example steps of stairs, characterized in that it consists - to achieve a preparation of the attachment surface by a rough planing-then light, crossing the passages to using a rApe and a chainsaw with two rows of gouges, to slightly lift the fibers, - to adapt around the steps a formwork limited to the free faces by   example the nose of the step, the overhanging ends as counter   marches and the nur of the cage constituting by themselves the complete parts   parts of the formwork, said formwork being composed of plastic sections   dishes or shape restoring the nose-of-step, set level for cor-   stabilizing the cant and fixed by nailing, - casting a reloading material having a sufficient fluidity to fill by gravity the volume to be refilled, a hardener having been incorporated before just casting to ensure-intake of the mixture and rapid gelation in less than five minutes, in such a way that the repair of the flatness and the reconstitution of the nose-bridge in a single operation 2. surface treatment tool for implementing the method according to claim 1., characterized in that it consists of a chain saw or motor saw whose links are equipped with a double row of gouges.   3. Forms for carrying out the method according to claim 1, consist of angles or flexible profiles cut to length, 4. Formwork elements according to claim 30, characterized in that   that they are made of neat plastic material, in particular the chloride of polyethylene vinyl.   5. Formwork elements according to claims 3 and 4, characterized   by their shaped profile so as to allow the molding of the nose-of-march.   6. Form of the casting reloading material according to the method according to claim 1., characterized by a total enveloping of the nose-old step mechanically opposing the stripping and stiffening efforts   all by its gutter-shaped structure.   7. Release products for the implementation of the process according to claim 1., characterized in that they are composed of emulsion of   soluble polyvinyl chloride, silicones or waxes.