Lafarge Platres Patent applications |
Patent application number | Title | Published |
20120034836 | LIGHTWEIGHT PLASTERBOARD AND PLASTER SLURRY COMPOSITION USED FOR ITS MANUFACTURE - A plaster slurry composition includes plaster, water and starch, the starch having a Brookfield viscosity of less than 60 cps at a temperature below 60° C. and a Brookfield viscosity greater than 10,000 cps at a temperature of 70° C. | 02-09-2012 |
20110197793 | LIGHTWEIGHT PLASTERBOARD AND PLASTER SLURRY COMPOSITION USED FOR ITS MANUFACTURE - A plaster slurry composition includes plaster, water and starch, the starch having a Brookfield viscosity of less than 60 cps at a temperature below 60° C. and a Brookfield viscosity greater than 10,000 cps at a temperature of 70° C. | 08-18-2011 |
20100273916 | ADMIXTURE FOR HYDRAULIC BINDER - A method includes adding at least one copolymer or a salt thereof acting as a plasticizer, blocking agent, or both a plasticizer and a blocking agent, to a calcium sulphate-based hydraulic binder. The copolymer includes an acrylic acid or a poly(oxy)alkylene copolymer. | 10-28-2010 |
20100272983 | SOUND-ABSORBING, RESISTANT PANELS AND PROCESS FOR MAKING SAME - A composition includes a set hydraulic binder; and a foaming agent and has a porosity ≧0.55; a flow resistivity between 10000 and 200000 N.s.m-4; a tortuosity between 1.2 and 3.4; a viscous characteristic length between 10 μm and 60 μm; a thermal characteristic length between 60 μm and 1000 μm; and a compressive strength of at least 0.30 MPa as measured by modified ASTM C472. | 10-28-2010 |
20100047461 | COATED GYPSUM BOARD PRODUCTS AND METHOD OF MANUFACTURE - A method of producing a coated gypsum board includes depositing a gypsum slurry to form a wet gypsum board having a gypsum core; applying a coating to the wet gypsum board; and drying the wet gypsum board, wherein the step of applying the coating occurs prior to the step of drying and the coating penetrates through at least a portion of the facing sheet and into at least a portion of the gypsum core. A board produced by the method is made with a coating that matches a joint compound. | 02-25-2010 |
20090301647 | PRODUCTION PROCESS FOR HYDRAULIC BINDER-BASED BOARDS WITH FOUR TAPERED EDGES, PRODUCTION LINE OF SUCH BOARDS - A production process is provided for a board of hydraulic binder with a facing on each of its sides. The process includes on one side first tapered parallel edges and on the same side or the other side, two second tapered parallel edges perpendicular to the first. The process also includes the use of a forming lath having at least two distal parts. The process can be used in a production line that includes a specific lath. | 12-10-2009 |
20090301630 | PRODUCTION METHOD FOR HYDRAULIC BINDER-BASED, TAPERED-EDGE BOARDS - The subject of the invention is a novel plasterboard and its manufacturing processes. The novel board comprises, on one side, two first parallel feathered edges and, on the other side, two other, second, parallel feathered edges that are perpendicular to the first ones; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said other parallel feathered edges having a width of between 100 and 200 mm; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said second parallel feathered edges having a width such that the ratio of the width of the said second parallel feathered edges to the width of the said first parallel feathered edges is between 1.5 and 5. | 12-10-2009 |
20090294067 | PRODUCTION LINE FOR HYDRAULIC BINDER-BASED, TAPERED-EDGE BOARDS - The subject of the invention is a novel plasterboard and its manufacturing processes. The novel board comprises, on one side, two first parallel feathered edges and, on the other side, two other, second, parallel feathered edges that are perpendicular to the first ones; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said other parallel feathered edges having a width of between 100 and 200 mm; or, on one side, two first parallel feathered edges and, either on the same side or on the other side, two second parallel feathered edges that are perpendicular to the first ones, the said second parallel feathered edges having a width such that the ratio of the width of the said second parallel feathered edges to the width of the said first parallel feathered edges is between 1.5 and 5. | 12-03-2009 |
20090229736 | JOINT COMPOUND COMPOSITION FOR BUILDING ELEMENTS AND METHOD OF PRODUCING A STRUCTURE - Producing a structure, in which: building elements are juxtaposed so as to define a space between said building elements; a joint compound composition is mixed with water so as to obtain a joint compound; said space is filled with said joint compound composition, without using a tape; and said joint compound is left to harden, wherein said joint compound composition includes: a) 50 to 60% of calcium sulphate hemihydrate; b) 5 to 15% of an organic binder in powder form; and c) 0.05 to 0.2% of a water repellent selected from the group consisting of oleic acid, stearic acid and their alkali metal or alkaline-earth metal salts. | 09-17-2009 |
20090169878 | LIGHTWEIGHT PLASTERBOARD AND PLASTER SLURRY COMPOSITION USED FOR ITS MANUFACTURE - A plaster slurry composition includes plaster, water and starch, the starch having a Brookfield viscosity of less than 60 cps at a temperature below 600 C and a Brookfield viscosity greater than 10,000 cps at a temperature of 700 C. | 07-02-2009 |
20090133346 | Drywalls Joint - A drywall joint, suitable for joining dry wall panels of wall and ceiling structures, wherein each drywall panel has an outer surface and an opposite inner surface, the joint including: (a) an outer joint section, extending at least partially the height of and being disposed against the outer surface of the drywall panels; (b) an inner joint section, extending at least partially the height of and being disposed against the inner surface of the drywall panels; and (c) connectors for coupling the outer and inner joint sections together so as to sandwich the drywall panels between the outer and inner joint sections, the connectors including: i. first engagement formations on one of the outer and inner joint sections, and ii. correspondingly positioned second engagement formations on the other of the inner and outer joint sections, the first engagement formations being so positioned and shaped that they pass through the dry wall panels to inter engage with the second engagement formations in the other of the inner and outer joint sections when the outer and inner joint sections are coupled together. | 05-28-2009 |
20080310248 | APPARATUS FOR MANUFACTURING SET CELLULAR CEMENT - A process for manufacturing set cellular cement, including the steps of: (i) mixing cementitious material, water, foaming agent and optionally additives into a free flowing slurry having a slump of at least 100 mm; subsequently (ii) injecting and distributing air into the slurry of step (i) to form a cellular slurry; subsequently (iii) casting the cellular slurry of step (ii); and finally allowing the cellular slurry to set. And, an apparatus for carrying out the process. | 12-18-2008 |
20080275167 | Coating for wall construction - A coating for wall construction is provided whereby a level 5 finish may be obtained without the need for a finishing coat or final skim coat. The coating may be applied to drywall elements prior to installation and is compatible with jointing materials such that a substantially homogeneous surface may be obtained after the drywall elements are assembled with jointing material and the jointing material is dried. The coating formulation includes a noncellulosic thickener, a binder, a mineral filler and water. A method for the construction of interior walls and a construction assembly for interior walls is further provided. | 11-06-2008 |
20080210136 | Jointing and Surface Compound for Construction Elements, Its Preparation Process and Building Process of a Structure - The object of the invention is a drying compound comprising from 50 to 85% of FGD gypsum and/or natural or processed gypsum, in mass percentages based on the total mass of the compound, presenting the following particle size characteristics: (i) a d | 09-04-2008 |
20080206599 | Method for Preparing a Gypsum Composition - The invention provides a method for preparing a gypsum composition containing a cross-linked polymer comprising the following steps:
| 08-28-2008 |