Page 40 - July-August-2018

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Description of Marzoli’s ne opener B380L

a lower density of the throughput, a higher number of chamber is fed to an opening roller and the resulting
turns on the grids (8 times) and consequently a better flocks are delivered to a blending channel where
cleaning performance. suction from the downstream machine effectively
blends them.
Another crucial task of modern blow room machinery
is to effectively blend the material. The automatic Modern blow room machinery must minimize the
bale plucker traveling on the bales, with two plucking formation of neps which are mainly formed by the air
rollers and the higher number of blending chambers currents created by motor fans. Marzoli in its lines
in the line guarantee maximum homogeneity of the installs cage condensers instead of motor fans,
tuft blend. Marzoli’s mixer B143L can have 4 or 8 which, not only minimize the formation of neps, but
blending chambers. The material within each also dedust the material after every opening stage.
Although productivity of blowroom machinery has accelerates the fiber before delivering it to the fast
increased steadily in the last decades, few rotating roller.
innovations have revolutionized the concepts of
opening, cleaning and blending of the fiber. Opening Opening performance is guaranteed by two
of the fiber is still carried out through feed rollers and consecutive beaters, surrounded by four carding
beaters, whose speed ratio can be as high as 150/1. segments. Each carding segment is followed by a
Higher production has been achieved through higher mote knife with deflector: every time the material is
speed of the beaters and more aggressive carding opened, trash and dust are discarded. Knives and
elements, often affecting the elasticity, natural deflectors are individually settable so that the best
resistance and length of the fiber. fiber selection can always be achieved with every
kind of material.
Marzoli has introduced some innovations in its lines
to specifically address this drawback. Stress and In order to achieve excellent cleaning performances
shortening of the fiber is caused primarily in openers trash should be discarded as much as possible by
by feed systems that nip the fiber and present it to the coarse trash cleaner: throughout the process,
fast-rotating beaters. Marzoli’s fine opener has a trash is broken into smaller pieces which are
pre-opening roller between feed rollers and beater. increasingly harder to remove. Marzoli coarse trash
The fiber is treated much more gently because the cleaner has two beaters with independently-settable
fiber is not nipped and the pre-opening roller grids and a large working width. These features entail Technical description of Marzoli’s coarse cleaner B390L

July/August 2018