What are the cleaning steps of PET bottle sheet cleaning equipment?

PET bottle sheet cleaning equipment is mainly divided into the following steps: sorting - de-labeling - crushing - cleaning - drying - bagging, these five steps are very important, indispensable. The production process of Pet cleaning equipment is as follows:

 

First, sorting is to separate out other impurities in raw materials such as miscellaneous bottles, miscellaneous colored bottles, trademark paper, and bottle caps that are not PET. Some things (trademark paper, bottle caps, etc.) can be removed in the later process, some things (PVC/PS/ rubber, etc.) can not be separated in the later process, only in the sorting process clean, otherwise pet cleaning equipment can not wash out good bottle pieces.

 

Second, in the crushing process, not only the whole bottle is broken into pieces, but also a strong pre-washing function, good operation, can remove more than 80% of sediment and other impurities.

 

Third, pre-washing is to remove the sand and other easily removed attachments on the bottle, and remove the larger amount of impurities by a simple method. Without this process, a large number of impurities on the bottle sheet enter the main washing process, which will have two adverse effects. First, these impurities will consume a large amount of cleaning agents, resulting in waste; Second, these impurities will quickly thicken the cleaning agent, affecting the cleaning effect, even so that the cleaning agent can not be used.

 

Fourth, the main washing is to remove the oil, glue and other difficult to remove stains on the bottle. The number of stains in this part is small, but the requirements for the process are relatively high. According to the traditional process requirements, the bottle must be stirred and cleaned in an aqueous solution of caustic soda at 95-98 ° C for more than 30 minutes to achieve the effect.

Five, rinsing is to remove the stains and cleaning agents that have been dissolved by cleaning agents on the bottle, this process is also very important, rinsing not clean bottle pieces, will turn yellow after baking.

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