Bottle Washing Plant

Bottle Washing Plant

The hot screw washer as well as the hot washer work with a medium of a 4-5% caustic soda solution. Both are heated by electrical heating plates in order to achieve an ideal cleaning effect.

PET moves into the screw washer via a cyclone with rotary valve. Ideal cleaning is achieved by increased retention time in the medium (adhesives and dirt are dissolved and resolved). In the subsequent friction cleaner, material is separated from the water that contains adhesives and dirt.
Material moves to the hot washer via blower.

The flakes are moved into the hot washer. They are intensively washed by high turbulence. In a downstream friction cleaner, water is separated from the caustic soda solution. Adhesives are removed as a result of the friction applied.
The water containing the removed dirt is pumped to the fiber separator.
A blower carries the dried material to the post washer.

The material in the post washer is intensively cleaned by high turbulence. The material is introduced by a cyclone with rotary valve. In the post washer, leftover caustic soda solution that originates from the hot washing stages is removed.

The cleaned material moves to a friction cleaner via the washer overflow. In the friction cleaner, the water is separated from the material and the dried flakes are then blown into the second separation stage.