In 2005, Yao Wenbin and Zhang Wei of Zhejiang Forestry College put forward the cracking technology of bamboo fiber pyrolysis and separating (Yao and Zhang 2011).

Firstly, using high pressure-cooking vessel softens bamboo slices and then micro-cracks are formed. The slices are delaminated by splitting the bamboo through machine and the cracks and delamination expand along the direction paral­lel to the fiber leading to bamboo detaching. In external load synergies, the macro­crack of bamboo continues to expand, achieve its interfacial debonding stratified and obtain crude fiber bamboo. Coarse bamboo fibers become fine fibers after soft­ening, carding and a series of processes (Yao and Zhang 2011).

The notable feature in this method is small damage to the fiber intensity, fiber product has even type, and also very adaptable. Bamboo fiber processed by this method has the length of 50-90 cm and the fineness of 0.06 mm (Yao and Zhang 2011). The quality and yield of bamboo fiber produced by this method is shown in Table 2.1.