Irradiation technology is using high energy X-rays enable the physical properties of the substance or chemical change in the composition of the molecular chain of C atoms around the hydrogen (H atoms and the presence of polymer such as polyethylene, polypropylene and so on. One kind of technology which is suitable for people to need. Irradiation technology by radiation is electromagnetic discharge (x ray, gamma ray) ray and particle rays (high-energy electron beam) the gamma ray is released in the decay of radioactive isotopes nuclei photon flux, strongest penetrating ability, application the most widely is irradiation is currently the most widely used, but in recent years, with the continuous improvement of electron accelerator technology, high machining efficiency and cost advantage has more and more caused people's attention. Especially the frequent safety accidents of cobalt 60 device, the accelerator irradiation than from the original 5% now 15% changes.

Material in the molecular absorption of radiant energy will occur after many reactive transition state active particles such as ions, free radicals and hydrated electron, these active particles with chemical combination, and a tendency to decompose, resulting in various chemical reactions. Under the effect of radiation energy, some polymers are mainly degraded, while some polymers are crosslinked.

Based on cross-linking reaction; molecular chain around the C atom without hydrogen (H atoms and the presence of polymer such as PVC, such as cellulose and starch, to degrade.