Types of Plywood
How many types of plywood are there? According to different classification standards, there are different plywood types .
Types of Waterproof Performance
One way is to classify the types of plywood according to its own properties.For example, according to the waterproof performance of plywood itself, plywood can be divided into moisture-proof plywood, ordinary waterproof plywood and waterproof weatherproof plywood. Common interior plywood is moisture-proof plywood, Like furniture plywood. For ordinary outdoor use, choose ordinary waterproof plywood.However, if the use environment may make the plywood exposed to the sun and rain, in this case, it is best to use waterproof weatherproof plywood which is most durable in a harsh environment.
At this point, you might think that waterproof weatherproof plywood would be the most expensive plywood.But in fact, this is not necessarily the case. For example, some interior furniture plywood with expensive natural veneer are more expensive. Of course, waterproof and weather-resistant plywood is not necessarily used for outdoor use. It may also be used in kitchens, bathrooms and other places where moisture is very heavy.
Moisture and water is the natural enemy of all wood products and natural wood/lumber is no exception. All plywood is moisture-proof plywood.So you don’t have to worry about it. Ordinary moisture will not damage the plywood at all. Waterproof plywood or waterproof and weatherproof plywood should be considered only when the plywood is likely to be exposed to water or in a humid environment for a long time.
Types of Emission Grade
According to the formaldehyde emission grade of plywood, plywood can be divided into E2 grade, E1 grade,E0 grade and CARB2 grade. E0 grade and CARB2 grade plywood has the lowest formaldehyde emission level and is also the most environmentally friendly. Formaldehyde actually widely exists in nature and even in the apple we eat. E0 grade and CARB2 plywood is mainly used for interior decoration and furniture manufacturing. Now there is also a marketing concept called board for baby’s room, the formaldehyde emissions of these board are very low.
Types of Appearance Grade
According to the appearance grade of plywood, plywood can be divided into various types, such as A grade, B grade, C grade, D grade and so on. B/BB grade Plywood means that its face is B grade and its back is BB grade. But actually in the production of B/BB plywood, we will use better B grade for face and lower B grade for back . According to different national and international standards, plywood appearance grades are divided into different grade names. N grade, A grade, B/B, BB/BB, BB/CC, B/C, C/C, C+/C, C/D, D/E, BB/CP are all common plywood grade names. It looks so complicated. How to understand these different grade names? If you study these plywood grade standards, you will feel very painful. But in fact, it is very simple . Most plywood grade standards mainly do the same job that dividing plywood into perfect, beautiful, ordinary and low-grade, though their grade names are different. Usually, N, A and B represent perfect grade . B, BB represents the beautiful grade. CC, CP represents the ordinary grade. D, E represents the low-grade.
Types of Size
According to the size of plywood, plywood can be divided into standard size and special-sized plywood. The standard size is 1220X2440mm.In general, buying a standard size is the wisest choice. Because the production of standard size boards is the largest. Producing standard size , it can maximize the use of raw materials, machinery and equipmen. Thus the production costs is low .However, for some special needs, the special size plywood is the best choice. And we can produce all kinds of special sized plywood.
Types of Species
According to the species of surface, Plywood can be divided into birch plywood, Eucalyptus plywood. beach plywood , Okoume plywood, Poplar plywood, pine plywood, Bingtangor plywood, Red oak plywood, etc. It is customary to name plywood according to its species of surface, though the species of core may be different . For example, a plywood with birch face/back poplar core is also called birch plywood; a Red Oad plywood may has a Eucalyptus core . The combination of different species for surface and core will produce a best plywood with beautiful surfaces at low costs . Yes, that’s right, the species used for the surfaces usually looks beautiful but it’s also expensive. If these expensive tree species are used to produce the core of plywood, the cost of a piece of plywood will be very high.
Type of Core
According to the different cores of plywood, it can be divided into blockboard and multi-layer board(i.e. normal plywood). Blockboard is a type of special plywood. The Harmonization System Code for plywood and blockboard are the same. The core of blockboard is made of wood strips. These small strips of wood are glued together tightly under high pressure. Blockboard is mainly used for interior decoration and furniture manufacturing. Blockboard is not as strong as plywood.Therefore, blockboard should not be used in places where high bearing and strength are required. Plywood would be a good choice if you need a strong wood board.
Structural and Non Stuctural
Plywood can be divided into Structural plywood and Non Stuctural plywood. Structural plywood have superior mechanical properties like bonding quality, bending strength and Modulus of elasticity in bending . Structural plywood can be used for building house. Non Stuctural plywood are used for furniture and decoration .
Type of Surface
Intelligent human beings will continue to invent better wood materials. Plywood is not only required to be waterproof, it is also required to be wear resistant. At this time, smart humans put a layer of waterproof, wear-resistant,dirt-resistant and chemical-resistant film paper on the surface of plywood which is called melamine faced plywood and film faced plywood. But people are still not satisfied, they require plywood to be fire-resistant.Wood is easy to catch fire, but you read that right, it requires wood to be fire-resistant and people did it. They past a layer of fire-resistant paper on plywood, which called HPL fire-resistant plywood. These film/laminate on the surface have greatly improved the performance of plywood. They are waterproof, corrosion-resistant, wear-resistant,fire-resistant and durable. They are widely used in the manufacture of furniture and decoration.
