Rice Husks are the coatings of rice grains which protect the seed during the growing season. This husk is made up of hard materials including opaline silica and lignin. This intimate blend of silica and lignin makes the rice husk resistant to water and fungal decomposition. Due to their properties, rice husks are considered a Class A insulating material as they are difficult to burn and less likely to propagate
mould or fungi. Wood flours have been used in the plastic industry for roughly 90 years. Over 7.7 billion pounds of fillers are used in the plastic industry today. Agro-waste composite (Wood-plastic composite) materials have an average composition of 50% agro-waste /48% plastic /2% additives (stabilizers, coupling agents and/or pigments).
An estimated 100,000,000 metric tons of rice husks are generated each year throughout the world. Rice husks, therefore, are available in abundance since rice can be grown in virtually every continent except Antarctica, and is second only to wheat in worldwide area and production. Since the rice husk is about 25% of the rough harvested weight of rice, it can be seen that our planet has a plentiful supply of rice husks.
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