Main body of a doctor blade chamber, doctor blade chamber thereof and methods of manufacturing same

A main body of a doctor blade chamber comprising:

• a single hollow closed profile delimited by a first portion configured to hold a first doctor blade, a second portion configured to hold a second doctor blade, and a third portion connecting the first portion and the second portion, the single hollow closed profile extending according to a longitudinal main axis X-X of the main body, the single hollow closed profile being made of a pultruded composite material,
• a cavity outside of the single hollow closed profile intended to receive ink and delimited at least by a part of the first portion, a part of the second portion, and the third portion,
• a water channel that is positioned in a hollow of the single hollow closed profile and extending along the longitudinal main axis X-X, and
• at least one washing nozzle opening into the water channel and protruding from the water channel through the third portion of the single hollow closed profile.