Saint-Gobain Gyproc India
Encyclopedia
Saint-Gobain Gyproc India Ltd. http://www.saint-gobaingyproc.in/ is a part of the Compagnie de Saint-Gobain SA
Saint-Gobain
of France.
It is the amongst the well known players in the gypsum
based construction materials space in India for well over two decades. They have been forthcoming in introducing light weight and environment friendly interior construction practices in the India.
The company offers a wide and most comprehensive range of drywall http://www.saint-gobaingyproc.in/gyproc-drywall-partition-system.html and ceiling solutions in India. The products are ideal for use within an indoor space in residential premises, educational institutes, offices, hotels, commercial spaces and industrial manufacturing units.
The products are manufactured in India by manufacturing plants based from Jind (Haryana), Wada (Maharashtra) and Bengaluru
The first plaster board manufacturing was started in 1986 at a plant based at Jind (Haryana). The plant introduced a value added plaster board category in 1996 with fire resistant boards- better known as GRG. The company started another plant in Chennai in 2000 followed by a plant in Wada (near Mumbai) in 2005. The Wada plant along with plaster boards also manufactures gypsum plasters.
The company was taken over by the Saint-Gobain Group by virtue of a global acquisition of BPB in 2006. The name has been recently changed to Saint-Gobain Gyproc India Ltd. (SGGIL). The company also has a plant for plaster boards based out of Bengaluru set up in 2008.
The usual shape of a plasterboard is rectangular. The most common sizes of gypsum plasterboards are 4 ft x 6 ft or 4 ft x 8 ft. If the shape of the board is in the form of a square, it is called a gypsum tile. Gypsum tiles are most commonly seen in 2 ft x 2 ft size.
Manufacturing process of Gypsum Plaster Boards
A plaster board is made of a paper
liner wrapped around an inner core made primarily from gypsum plaster. The raw natural gypsum, CaSO4·2 H2O, is heated in a process called calcined
to produce the hemihydrate of calcium sulfate
(CaSO4·½ H2O). This is done in kettle or flash calciners. The plaster is mixed with fiberglass), plasticizer
, foaming agent
, finely ground gypsum crystal as an accelerator, EDTA
, starch
or other chelate as a retarder, various additives that may increase mildew
and/or fire resistance (fiberglass or vermiculite
), wax
emulsion or silanes
for lower water absorption and water.
The board is then formed by sandwiching a core of wet gypsum between two sheets of heavy paper. When the core sets and is dried in a large drying chamber, the sandwich becomes rigid and strong enough for use as a building material.
Applications of Gypsum Plaster Boards
False ceilings
The most common use of gypsum plaster boards is in the making of false ceilings in residential, commercial, hospitality and healthcare sectors. A metal framework is suspended from the ceiling slab and plaster boards are then attached with the help of screws to it.
The use of plaster boards for false ceilings is recommended particularly since their size is large. The large size can cover up a larger area of the ceiling and results in lesser joints. This reduces the chances of cracks. The boards can be cut accordingly to insert light fixtures for concealed lighting. Attractive designs like steps, curves can also be easily incorporated.
Drywall Partitions
Drywall partitions are made using plaster boards mounted on either side of a vertical metal framework. The partitions created in this way are easy to erect as well as lighter as compared to masonry. The use of high durability, fire rated or moisture resistant boards can enhance the performance of the walls. Drywalls also offer superior acoustic insulation as compared to brick/block walls. Gyproc is amongst the leading companies promoting the use of drywalls in India.
Ceiling tiles are most commonly used in a 2ft x 2ft, 2ft x 4ft size. There are some variations in shape available for designer tiles which are cable suspended from ceilings.
Types of Ceiling Tiles
Wet Felt
These tiles are also known as Mineral fibre tiles. These are fabricated from a range of products like perlite, mineral wool, and fibers from recycled paper. These tiles are light in weight and also can be moulded into various patterns on their surface.
They offer a good degree of acoutics with a sound absorption of up to 45%. The biggest disadvantage how ever is the fact that they are not resistant to moisture.
Gyusum Tiles
Gypsum tiles comprise of the soft mineral slurry of gypsum pasters and then finished with vinyl, paper or a decorative face.
Soft Felt
These tiles are composed of glasswool fibres which are compressed together. Glasswool is highly recommended in acoutic applications as it can absorb more than 90% of the sound energy incident on it.
Excellent sound absorption and resistance to moisture make glasswool tiles highly effective in ceilings
Metal Tiles
Powder coated tiles made from galvanized steel or aluminium are highly popular as they are moisture resistant and can be used in wet cleaning. They also require low maintenance. You will often find these metal tiles in airports or service areas of hotels and hospitals where wet celaning is done.
Saint-Gobain
Saint-Gobain S.A. is a French multinational corporation, founded in 1665 in Paris and headquartered on the outskirts of Paris at La Défense and in Courbevoie. Originally a mirror manufacturer, it now also produces a variety of construction and high-performance materials.The company has its head...
Saint-Gobain
Saint-Gobain
Saint-Gobain S.A. is a French multinational corporation, founded in 1665 in Paris and headquartered on the outskirts of Paris at La Défense and in Courbevoie. Originally a mirror manufacturer, it now also produces a variety of construction and high-performance materials.The company has its head...
of France.
It is the amongst the well known players in the gypsum
Gypsum
Gypsum is a very soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. It is found in alabaster, a decorative stone used in Ancient Egypt. It is the second softest mineral on the Mohs Hardness Scale...
based construction materials space in India for well over two decades. They have been forthcoming in introducing light weight and environment friendly interior construction practices in the India.
The company offers a wide and most comprehensive range of drywall http://www.saint-gobaingyproc.in/gyproc-drywall-partition-system.html and ceiling solutions in India. The products are ideal for use within an indoor space in residential premises, educational institutes, offices, hotels, commercial spaces and industrial manufacturing units.
The products are manufactured in India by manufacturing plants based from Jind (Haryana), Wada (Maharashtra) and Bengaluru
History of Saint-Gobain Gyproc India Ltd
The company was started as India Gypsum in 1986 as a part of the C. K. Birla Group (Hyderabad Industries). The set up was under technical collaboration with British Plaster Boards (BPB) WorldwideThe first plaster board manufacturing was started in 1986 at a plant based at Jind (Haryana). The plant introduced a value added plaster board category in 1996 with fire resistant boards- better known as GRG. The company started another plant in Chennai in 2000 followed by a plant in Wada (near Mumbai) in 2005. The Wada plant along with plaster boards also manufactures gypsum plasters.
The company was taken over by the Saint-Gobain Group by virtue of a global acquisition of BPB in 2006. The name has been recently changed to Saint-Gobain Gyproc India Ltd. (SGGIL). The company also has a plant for plaster boards based out of Bengaluru set up in 2008.
Gypsum Plasterboards
Gypsum Plasterboards comprise of a natural gypsum slurry core encased between paper liners on the top and bottom. The paper used is of 160 to 200 gsm thickness. The specifications for gypsum plasterboards is defined by the IS 2095- Part 1, 1996.The usual shape of a plasterboard is rectangular. The most common sizes of gypsum plasterboards are 4 ft x 6 ft or 4 ft x 8 ft. If the shape of the board is in the form of a square, it is called a gypsum tile. Gypsum tiles are most commonly seen in 2 ft x 2 ft size.
Manufacturing process of Gypsum Plaster Boards
A plaster board is made of a paper
Paper
Paper is a thin material mainly used for writing upon, printing upon, drawing or for packaging. It is produced by pressing together moist fibers, typically cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets....
liner wrapped around an inner core made primarily from gypsum plaster. The raw natural gypsum, CaSO4·2 H2O, is heated in a process called calcined
Calcination
Calcination is a thermal treatment process applied to ores and other solid materials to bring about a thermal decomposition, phase transition, or removal of a volatile fraction. The calcination process normally takes place at temperatures below the melting point of the product materials...
to produce the hemihydrate of calcium sulfate
Calcium sulfate
Calcium sulfate is a common laboratory and industrial chemical. In the form of γ-anhydrite , it is used as a desiccant. It is also used as a coagulant in products like tofu. In the natural state, unrefined calcium sulfate is a translucent, crystalline white rock...
(CaSO4·½ H2O). This is done in kettle or flash calciners. The plaster is mixed with fiberglass), plasticizer
Plasticizer
Plasticizers or dispersants are additives that increase the plasticity or fluidity of the material to which they are added; these include plastics, cement, concrete, wallboard, and clay. Although the same compounds are often used for both plastics and concretes the desired effects and results are...
, foaming agent
Foaming agent
A foaming agent is a surfactant, which when present in small amounts, facilitates the formation of a foam, or enhances its colloidal stability by inhibiting the coalescence of bubbles....
, finely ground gypsum crystal as an accelerator, EDTA
EDTA
Ethylenediaminetetraacetic acid, widely abbreviated as EDTA , is a polyamino carboxylic acid and a colourless, water-soluble solid. Its conjugate base is named ethylenediaminetetraacetate. It is widely used to dissolve limescale. Its usefulness arises because of its role as a hexadentate ligand...
, starch
Starch
Starch or amylum is a carbohydrate consisting of a large number of glucose units joined together by glycosidic bonds. This polysaccharide is produced by all green plants as an energy store...
or other chelate as a retarder, various additives that may increase mildew
Mildew
Mildew refers to certain kinds of molds or fungi.In Old English, it meant honeydew , and later came to mean mildew in the modern sense of mold or fungus....
and/or fire resistance (fiberglass or vermiculite
Vermiculite
Vermiculite is a natural mineral that expands with the application of heat. The expansion process is called exfoliation and it is routinely accomplished in purpose-designed commercial furnaces. Vermiculite is formed by weathering or hydrothermal alteration of biotite or phlogopite...
), wax
Wax
thumb|right|[[Cetyl palmitate]], a typical wax ester.Wax refers to a class of chemical compounds that are plastic near ambient temperatures. Characteristically, they melt above 45 °C to give a low viscosity liquid. Waxes are insoluble in water but soluble in organic, nonpolar solvents...
emulsion or silanes
Silanes
Silanes are chemical compounds of silicon and hydrogen, which are analogues of alkane hydrocarbons. Silanes consist of a chain of silicon atoms covalently bonded to each other and to hydrogen atoms. The general formula of a silane is SinH2n+2...
for lower water absorption and water.
The board is then formed by sandwiching a core of wet gypsum between two sheets of heavy paper. When the core sets and is dried in a large drying chamber, the sandwich becomes rigid and strong enough for use as a building material.
Applications of Gypsum Plaster Boards
False ceilings
The most common use of gypsum plaster boards is in the making of false ceilings in residential, commercial, hospitality and healthcare sectors. A metal framework is suspended from the ceiling slab and plaster boards are then attached with the help of screws to it.
The use of plaster boards for false ceilings is recommended particularly since their size is large. The large size can cover up a larger area of the ceiling and results in lesser joints. This reduces the chances of cracks. The boards can be cut accordingly to insert light fixtures for concealed lighting. Attractive designs like steps, curves can also be easily incorporated.
Drywall Partitions
Drywall partitions are made using plaster boards mounted on either side of a vertical metal framework. The partitions created in this way are easy to erect as well as lighter as compared to masonry. The use of high durability, fire rated or moisture resistant boards can enhance the performance of the walls. Drywalls also offer superior acoustic insulation as compared to brick/block walls. Gyproc is amongst the leading companies promoting the use of drywalls in India.
Ceiling Tiles
Ceiling tiles are lightweight tiles used in the interior of buildings. They are placed in an aluminium/ galvanized steel grid. They provide thermal insulation which can improve the airconditioning cooling in a room. They are also generally designed to improve the light reflectance and the acoustics of a room.Ceiling tiles are most commonly used in a 2ft x 2ft, 2ft x 4ft size. There are some variations in shape available for designer tiles which are cable suspended from ceilings.
Types of Ceiling Tiles
Wet Felt
These tiles are also known as Mineral fibre tiles. These are fabricated from a range of products like perlite, mineral wool, and fibers from recycled paper. These tiles are light in weight and also can be moulded into various patterns on their surface.
They offer a good degree of acoutics with a sound absorption of up to 45%. The biggest disadvantage how ever is the fact that they are not resistant to moisture.
Gyusum Tiles
Gypsum tiles comprise of the soft mineral slurry of gypsum pasters and then finished with vinyl, paper or a decorative face.
Soft Felt
These tiles are composed of glasswool fibres which are compressed together. Glasswool is highly recommended in acoutic applications as it can absorb more than 90% of the sound energy incident on it.
Excellent sound absorption and resistance to moisture make glasswool tiles highly effective in ceilings
Metal Tiles
Powder coated tiles made from galvanized steel or aluminium are highly popular as they are moisture resistant and can be used in wet cleaning. They also require low maintenance. You will often find these metal tiles in airports or service areas of hotels and hospitals where wet celaning is done.