Services Menu
Wood Panel Testing
Aut eum totam accusantium voluptatem.
Test for Fire Retardant Plywood as per IS 5509.
Test for Marine Plywood as per IS 710.
Test for Shuttering Plywood as per IS 4990.
Test for General Plywood as per IS 303.
Tet for Structural Plywood as per IS 10701.
Test for Pre Laminated Particle Board as per IS 12823.
Test for Particle Board as per IS 3087.
Test for Veneered Plywood as per IS 1328.
Test for Medium Density Fiber Board as per IS 12406.
Test for Pre-Laminated Medium Density Fiber Board as per IS 14587.
Test for Timber / Wood as per IS 1708
Block boards are being used in increasing quantities in the construction of railway carriages, bus bodies, marine and river crafts and for furniture making, partitions, paneling, prefabricated houses, etc. Block board is a board having a core made up of strips of wood, which may or may not be glued together and the core is glued to two or more veneers, on either side with grain direction of core and veneers running at right angles to one another. It can be of two grades i.e. MR & BWP grade and two types i.e. Commercial & Decorative.
Plywood is similar to solid wood of comparable density and thickness in its behaviour towards fire. Fire retardant characteristics is a very important property to prevent propagation of fire at the initial stages. Being an organic material, plywood cannot be made completely fireproof. However, its resistance to ignition, surface spread of flame, flame penetration, etc., can be improved by suitable treatments. For certain uses, for example, in ship building and railway coach construction, plywood treated against fire is required.
Plywood used in construction, repair and maintenance of marine and river craft is required to withstand rigorous conditions involving changes in temperature, humidity and alternate wetting and drying. In addition, they also need to withstand attack by marine organisms. Plywood used for general purposes is found to be unsuitable for such applications. The method of manufacture of marine plywood had been specifically stated in the standard so that the resulting plywood is capable of withstanding the rigorous conditions which marine plywood may have to withstand.
Plywood for concrete shuttering works is a BWP grade plywood, preservative treated and specially suited for use in concrete shuttering and form work. Concrete shuttering plywood is very economic as it can be put to repeated use, depending upon the care taken during erection and dismantling. The main requirements of such plywood are that it should be durable under alternate wetting and drying conditions, its surface should be hard and it should possess adequate strength to withstand the load of concrete and the forces caused by pouring of concrete and vibrations.
Plywood for general purposes shall be of the following two grades, depending upon the bond strength developed by the adhesive used for bonding the veneers: a Boiling water resistant or BWR Grade, and Moisture resistant or MR Grade.
Structural plywood is a speciality plywood different from other grades and types of plywood as covered by other Indian Standards. In this plywood, apart from the use of higher grades of adhesives (BWP type), special emphasis is laid on the species of timber to be used, the veneer quality and most importantly on the construction details to be observed in the manufacture of the plywood. The basic design values to be used in structural applications have to be evolved separately from the basic strength values depending upon the type and nature of application.
Pre laminated particle board in a particle board laminated on both surfaces by synthetic resin impregnated base paper under the influence of heat and pressure; or with finished foils under the influence of pressure or pressure and heat depending upon the type of binder used.
A board manufactured from particles of wood and other lignocellulose material in the form of flakes, slivers, shavings, splinters, granules agglomerated, formed and pressed together under heat and pressure by use of an organic binder together with one or more additives like wax, preservatives, catalyst, etc.
Veneered plywood is used in paneling work in buildings, interior lining of railway coaches, buses and ships and for furniture and general interior decoration. In view of the wide field of its application, decorative plywood has to be durable, of sound construction and highest quality.
Medium density fibre board is a panel product manufactured from lignocellulose fibres combined with synthetic resin or other suitable binder. The panels are manufactured to a specific gravity of 0.6 to 0.9 by the application of heat and pressure by a process in which the inter fibre bond is substantially created by the added binder. Other materials may have been added during manufacturing to improve certain properties.
Pre laminated medium density fibre board is a medium density fibre board laminated on both surfaces by synthetic resin impregnated base papers with or without impregnated overlay under the influence of heat and pressure.
The evaluation of basic properties of timber, such as strength, density effect of various treatments on strength, etc., and the establishment of design functions for structural timbers has been done on the basis of tests carried out on small clear specimens of timber.