Siempelkamp creates boards with rice straw

The newly developed Neo Blender ensures uniform and continuous gluing of the fibers and is wear-resistant.

In Asia, and especially in China, the use of alternative raw materials offers outstanding prospects to the wood-based materials industry. Around the world, more than 500 million tonnes of rice straw accumulate as a waste product in the agricultural sector each year.

However, most of this remains unused and is incinerated or decays in the fields and this could be an ideal source  of raw material for medium density fiberboard (MDF) and particle board.

Siempelkamp, the global technology leader in the wood-based materials industry, has developed methods to process this low-cost waste product into high-quality fiberboard. New techniques and innovative building components for the entire plant solve silicate problems (impurities and extraneous material such as sand and clay) and filter substances found in raw materials through a two-stage separation process.

With rice straw, panels can be produced in a climate-neutral manner with a zero-carbon footprint. They are recyclable and merely require a suitable bonding agent for production. MDF, oriented strand board (OSB) and particle board from annual plants fully consist of annually renewable raw materials.

Siempelkamp has developed a dry-gluing process for the production of rice straw panels using a newly developed continuous mixing system. This mixing system allows optimal adaptation of the glue system to the production conditions. Glue consumption levels are lower than in conventional gluing processes, since pre-curing losses are avoided.

The newly developed Neo Blender ensures uniform and continuous gluing of the fibers and is wear-resistant. The screw-type mixing chamber cover makes the system particularly easy to maintain.

The time has come for the hybrid wood composite panel. Composite wood-based materials such as this combine the attributes of various wood composite panels, including special strengths and high-quality surfaces, and are ideal as a substitute for plywood and other materials in applications ranging from furniture production to interior fittings.

Highly robust, multifunctional wood composite panels with paintable and coatable surfaces can be produced. This is possible thanks to a stable OSB core with top layers made of MDF or fine particle board.

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