FR2803559A1 - Production of decorative elements, e.g. pictures, signs or posters, involves sticking a picture or design on a painted base panel leaving a border all round and then applying and drying several coats of acrylic lacquer - Google Patents

Abstract

A decorative element is produced by sticking an image-bearing sheet of material on a primer-coated, painted and polished base panel so as to leave a border all round the sheet, covering the entire surface with several coats of acrylic lacquer (varnish plus hardener) and drying under dust-free conditions. A process for the production of a decorative element consisting of a sheet of material with an image stuck onto a panel involves (1) degreasing the panel, applying and drying a primer coat, painting, drying and rubbing down, (2) sticking the image-bearing sheet on the prepared panel so as to leave a border all round the sheet, (3) covering the entire surface with several coats of acrylic lacquer made from a varnish and a hardener and (4) drying in a dust-free cabinet. An Independent claim is also included for a decorative panel prepared and varnished as described above.

Description

<B> Method of manufacturing a decorative element and <B> element thus produced. </ B> The present invention relates to a method of manufacturing a decorative element.

in the state of the art, artisanal or industrial processes are known for producing such decorative elements from a sheet bearing a photograph, an engraving, a watercolor, a drawing or any other graphic form. Such elements are usually in the form of etching pasted on a cardboard support, often embellished with a Marie-Louise and / or passe-partout. They can receive a protective glass which in turn will be highlighted by a decorative rod.

When such elements are industrialized, the quality and finish sometimes leaves something to be desired. In addition, this method does not make it possible to highlight the design optimally. The object of the invention is to propose an improved method for producing such decorative elements.

According to its most general meaning, the invention relates to a method of manufacturing a decorative element formed by a panel on which is glued a sheet having an image, characterized in that it comprises a step of preparing the panel by degreasing, a step of depositing on the panel a primer, a drying step, a painting and drying step, a polishing step, the method of sticking on the panel thus prepared the sheet comprising the image of in order to preserve a margin around said sheet, and to carry out a plurality of cycles of applying on the surface formed by the panel covered with the sheet an acrylic lacquer formed by a varnish and a hardener, the assembly thus prepared being introduced in a dust-free drying cabinet.

According to a first variant, the support panel is a panel of natural wood or reconstituted wood, and in that the priming paint and primary type / granular bi-component of the modified alkyd type, with a hardener and a thinner. According to a second variant, the support panel is a reconstituted wood panel of the MDF medium type.

Preferably, the support panel is an aluminum panel, and in that the primer and fixing agent for aluminum wash two-component vinyl primary wash. Advantageously, the process according to the invention comprises a subsequent temperature-setting step at about 26 for a minimum period of 72 hours.

According to a preferred embodiment, the lacquer applied to the assembly formed by the panel and the sheet comprises a varnish and a hardener to have a thickness of 50 to 100 microns.

The invention also relates to a decorative panel formed by a panel on which is glued a sheet having an image, the panel protruding on all sides of said sheet characterized in that the assembly is coated with a plurality of layers of acrylic lacquer formed by a varnish and a hardener.

The invention will be better understood on reading the description which follows, with reference to a nonlimiting exemplary embodiment.

The invention consists in gluing an engraving, photograph, drawing, poster, etc. on a support medium MDF (reconstituted wood) or aluminum type 1050A (trade name). This support has previously received different treatments such as cutting, sanding, painting, to receive after sizing the chosen document while leaving a variable margin that will be 2 to 25 centimeters around the sheet following the chosen format.

A polish treatment will then be performed on the assembly thus prepared in order to give it shine and brightness, and make the product more attractive.

The following description presents a nonlimiting detailed example of embodiment of a decorative element according to the invention. The support panel has a thickness of 6 to 16 millimeters cut to a size ranging from 21x30 cm to 4x3 meters. The panel receives a first sanding treatment using a portable rotary sander with a sandpaper having 180/320 grit. The four edges of the panel are sanded under the same conditions to eliminate the defects of cut.

The plate thus prepared is then cleaned with a jet of compressed air and then cleaned with a cloth with a degreasing cleaning solvent which will allow the application of a primer.

After being cleaned, the panel is primed / two-component Polyester Modified Alkyd type + 20% hardener + 10-20% thinner. The application is made in paint booth with a spray gun equipped with a nozzle 1/4 to 1/8 and a pressure of 3.5 to 4 kg, trigger open.

After drying for 24 hours at a temperature of 24, the plate is again sanded under the same conditions as in the previous step, but with an abrasive of 400, and then cleaned as in the previous step. The panel is then ready to receive in the paint spray booth a dull or glossy dyed glycerophthalic paint, for example an alkyd resin which will be premixed with a diluent in proportions of about 20%.

After being painted, the panel is allowed to dry at a temperature of 24 over a period of at least 48 hours. After this step, the board is grained with a 400-grit sandpaper to eliminate any impurities that have settled during the application of the paint and drying.

The etching or photographing is then carried out using a template which has been made with sufficient margin to show on the sides of the document the hue defined in the previous operation.

The assembly thus produced is cleaned with an anti-silicone wiping pad.

A two-component acrylic lacquer (varnish and hardener) is then applied to form a layer of 50 to 100 micrometers. The lacquer is applied using a gravity spray gun with an open trigger pressure of 3.5 to 5 bars.

The lacquered assembly is then transported in a dust-free cabinet at a temperature of 24 to 26 for a minimum period of 36 hours for thorough drying.

We then proceed to a new sanding with a glass wool.

The lacquering step is repeated 3 times. The last coat of lacquer applied is not sanded. The element is then introduced into a heating chamber at approximately 26 for a minimum of 72 hours. The steps of working and preparing on aluminum are similar when the support panel is an aluminum plate. In this case, the primer paint is a fixative for two-component vinylic primary wash aluminum, in a mixture of a base part and a portion of reactive diluent by volume.

The invention is described in the foregoing by way of example of implementation.

Claims (1)

 1 - A method of manufacturing a decorative element formed by a panel on which is bonded a sheet having an image, characterized in that it comprises a step of preparing the panel by degreasing, a depositing step on the panel of a primer, a drying step, a painting and drying step, a polishing step, the method of adhering to the panel thus prepared the sheet having the image so as to preserve a margin around said sheet and performing a plurality of cycles of applying to the surface formed by the panel covered with the sheet an acrylic lacquer formed by a varnish and a hardener, the assembly thus prepared being introduced into a dust-free drying cabin. 2 - A method of manufacturing a decorative element according to claim 1 characterized in that the support panel is a natural wood panel or reconstituted wood, and that the primer paint and primary type / granular two-component of the modified alkyd type, with a hardener and a thinner. 3 - A method of manufacturing a decorative element according to claim 2 characterized in that the support panel is a reconstituted wood panel type MDF medium. 4 - A method of manufacturing a decorative element according to claim 1 characterized in that the support panel is an aluminum panel, and in that the primer and fixer type for aluminum wash two-component vinyl primary. 5 - A method of manufacturing a decorative element according to any one of the preceding claims characterized in that it comprises a subsequent step of heating to about 26 for a minimum duration of 72 hours. 6 - A method of manufacturing a decorative element according to any one of the preceding claims characterized in that the lacquer applied to the assembly formed by the panel and the sheet comprises a varnish and a hardener to have a thickness of 50 to 100 micrometers. 7 - decorative panel formed by a panel on which is glued a sheet having an image, the panel overflowing on all sides of said sheet characterized in that the assembly is coated with a plurality of layers of acrylic lacquer formed by a varnish and a hardener.