Blockboard is manufactured the use of center of softwood strips which might be as much as approximately 25mm huge. These softwood strips are positioned edge to facet and sandwiched between veneers of hardwood. Blockboards are similar to plywood and better than particle board and medium density fiberboard (MDF). Blockboards have super dimensional balance (even despite exposedness to humidity), and gives excessive stage of resistance to warping or twisting.
The grades of blockboards are represented with the aid of the symbols that are given beneath:
Grade and Type Symbol
MR Grade, Decorative Type MR-DEC
MR Grade, Commercial Type MR-COM
BWP Grade, Decorative Type BWP-DEC
BWP Grade, Commercial Type BWP-COM
Block forums standard sizes available in the market are given under:
In ft in mm
2440 x 1220 8′ x 4′
2140 x 1220 7′ x four′
2140 x 920 7′ x three′
1830 x 1220 6′ x 4′
1830 x 920 6′ x three′
Blockboards aren’t taken into consideration to be appropriate for out of doors packages because the glues utilised are in the main interior glues. While making use of blockboards for making pieces of furniture like doorways or tables, it’s miles of big importance to make sure that the center runs lengthways so as to reap most strength. Blockboards are an excellent creation cloth to make cabinets, doorways, panelling and walls.
Generally, there are most important grades of blockboard available
MR Grade (Moisture Resistant) and
BWP or BWR Grade (Boiling Water Proof or Boiling Water Resistant)
MR grade blockboards locate their programs in general in internal regions that consist of door center, partition, paneling and ceiling, and so on. Some very special moisture resistant glues are utilized of their production process. These forums also are referred to as interior grade blockboards.
2.BWP or BWR Grade:
BWP grade blockboards are engineered by using utilizing resins which have high stage of resistance to boiling water. These boards are closely used for software in prefabricated houses, coaches for railways, our bodies of buses and kitchen, and so forth. Here, they may be probably be exposed to high humidity stages, proving them best for outside use. BWP grade blockboards also are known as exterior grade blockboards.