TH6306A - Process for the manufacture of decorative thin sheets, thermosetting - Google Patents

Abstract

Process for producing decorative thermosetting sheets With a surface layer that resists scratching Which is composed of thin sheets of paper Impregnated with thermosetting resin In the continuous paper process Is soaked with advanced thermosetting resin. For example, melamine formaldehyde resin. At least one side of the paper is coated. With small, dry and hard particles that are flattened at a rate of 2-20 g / m2, usually 3-12 g / m 2. Across the surface of the resin on a continuous sheet of paper, the resin is dried where the coated particles soak up the sheet, known as a pre-pack that can be cut into at least one such sheet. sheet Or continuous paper is set down as the surface layer on the main layer And stick together

Claims (5)

1.Process for the production of thermosetting thin sheets used for decoration With the most anti-scratch surface layer These overlapping sheets consist of paper sheets impregnated with thermosetting resin. Where the continuous paper is soaked with melanin? Formaldehyde resin on at least one side of the continuous sanitized paper. Will be coated with dry particles And solid at the average particle 1-80 μm Smoothly on the surface of all raised resin On two to 20 grams per square meter of continuous woven paper, usually 3 to 12 grams per square meter, the revins are dried, the coated particles soaked in the paper or the woven paper (pre-pack). ) Can be cut into sheets The least of the paper is woven continuously. Will be defined down to the main and adjacent surface layer 2. Process according to claim 1 Where the layer consists of a pre-pack of continuous woven paper or a large number of dry sheets of paper that has not yet been coated with resin particles on top of these nonwoven paper. Or a sheet of paper containing melanene, formaldehyde resin While the remainder of the continuous weave paper or sheet of paper contains free-formaldehyde resin or phenol-urea-formaldehyde resin. And continuous woven paper or paper cut sticks Will be spooned continually forever Or intermittently with the outermost surface at high pressure and gradually increasing temperature 3. The process according to claim 1, where the main layer consists of particle sheets or fiber sheets 4. The process according to claim 1 Where continuous woven paper or sheets of paper coated with particles It consists of so-called coated paper sheets, usually alpha? Cellulose, and also known as decorative sheets. 5. Claim 3 process, where non-woven paper or sheets of paper that move particles onto it. With the main layer with the method of applying glue Or stacked together by heat and pressure. 6. Any one of the claims of clauses 1 to 5, where solid particles contain silica. Aluminum oxide and or silicon carbide 7. Process of any one of six claims where the average particle size is 5 to 60 c / m 8. Any claim in clauses 1 to 7, where the said continuous woven paper or particle-coated paper sheets is then coated with a soaked alpha-cellulose. Thermosetting resin, for example, melanine resin 9. Any Clause 1 to 8 Claim Process where 2 Particle Coating Plates are used 1 0. Any Claim Process In points 1 to 9, where the side to which the paper particles are coated is continuous Or the sheet which is attached to the top of the thin overlapping sheet 1 1. One of the claims processes 1 to 10 where solid and dry particles (2) are used by an apparatus consisting of a container (1) containing solid particles (2) and a spinner device (3). ) Which has an uneven surface under the container (1) where the particle (2) falls from the container (1) onto the spinner device (3) and is smoothed on nonwoven paper (4) soaked with reson thermosetting. But not dry before applying particle (2) to 1 2. The process according to claim 11, where the device also consists of a scraping disc (5) located inside the vane (1), which allows for smoother particle entry (2). According to the rotating device surface (3) 1 3. The process according to claim 11 or 12, where the device also consists of a scraper pad (5) placed under the container (1), which allows the feeding of particles (2) to be smoother. According to the rotating device surface (3) 1 4. One of the claim procedures in items 1 to 10, where the hard particles are applied via electrostatic coating 1. 5. One of the claim procedures in Articles 1 to 10, where solid particles are charged by friction and applied on a non-woven sheet.