Dieffenbacher will supply a straw-based particleboard plant for Chinese chemical company Wanhua. The order, signed last year includes everything from the forming station to the finishing line. The forming station is equipped with two windformers for the surface layer and a forming head for the core layer. The core element of the plant is a CPS 280 – 23.5 continuous press. This 8.5 ft press produces boards up to 2440mm wide and 8 – 35mm thick. The components supplied in the finishing line area include a diagonal saw and a distribution and trimming saw.
The Wanhua plant is designed to deliver an annual output of 110,000 m³ of straw-based particleboard. It is able to manufacture panels from wood, a blend of wood and straw, and entirely from straw. For a long time Dieffenbacher has been working on plant concepts for alternate raw materials such as fast-growing woods, annual crops (e.g. sugar cane, straw) and recycled wood in response to the rising demand for technology designed to work with these specific raw materials.
The increasing cost of wood is often the reason behind the partial or complete replacement of wood in the manufacture of boards. However, environmental regulations have also driven this development. In China, tonnes of straw are burned in the fields annually, which has a significant impact on the environment. This waste can be utilised in other ways and Dieffenbacher’s cooperation with Wanhua is one such project.
The Wanhua Industrial Group is a Chinese chemical company headquartered in Yantai, Shandong province. It is the world’s largest manufacturer of MDI glue ahead of Covestro and a leading TDI manufacturer.
Source: Dieffenbacher/ Edited by Panels & Furniture Asia