In the petroleum field, fracturing refers to the process of oil or gas production, the use of hydraulic action, so that oil and gas formation of a fracture method, also known as hydraulic fracturing. Fracturing is to artificially crack the formation, improve the flow environment of oil in the underground, increase the production of oil Wells, and play an important role in improving the flow conditions at the bottom of the well, slowing down the interlayer and improving the production of oil reservoirs.

In plastics, fracking is a defect of laminated plastics. Usually refers to the laminated plastic with paper, cloth or other materials as the substrate, due to excessive molding pressure caused by the destruction of the substrate phenomenon. Obvious cracks were observed through the surface resin.