Cleaning process and production line of PET (polyethylene terephthalate) bottle sheets

The invention discloses a cleaning process and a production line of PET (polyethylene terephthalate) bottle sheets. The cleaning process comprises the following steps of unpacking PET bottles, carrying out primary impurity removing by utilizing a whole bottle pre-cleaning device, removing labels from the PET bottles by utilizing a label removing device, removing heterochromous bottles and the bottles which are not made of PET materials by utilizing a sorting device, carrying out manual sorting by using a manual sorting platform, crushing by utilizing a crushing device, carrying out thermal cleaning by utilizing a thermal boiling boiler, neutralizing by utilizing a neutralizing tank, rinsing by utilizing a rinsing device, carrying out spin drying, drying by utilizing a drying cylinder, mixing, weighing and packaging, thus finishing the cleaning. According to the cleaning process, in full consideration of problem that too many impurities and pollutants exist in recycled PET bottles, various devices in a production process are adaptively transformed to be fit for the cleaning of the PET bottle sheets; the bottle sheets produced by utilizing the cleaning process and the production line can completely meet subsequent production and processing requirements, and the quality of the bottle sheets is improved; by utilizing a steam recycling system and the continuous spin-drying and drying operations, the energy utilization ratio can be greatly improved, the subsequent production and processing costs are lowered, and the cleaning process and the production line have wide social generalization significances.