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Typical Slitter Applications
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Info on Slitters
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Duplex Center Slitters |
Used for virtually any
material including film, laminates, non-wovens, paper, pressure sensitives and
more. Two rewind shafts allow for cut separation and excellent tension
control. A specialty of Benick. |
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Simplex Slitters |
Used mainly for
paper or other similar material which do not stretch and have little
gauge variation. Very productive because only one shaft must be
unloaded each set. Benick has considerable expertise running these machines. |
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Roll Doctor Machines |
Typically used
to rewind and/or inspect rolls of paper, film, or other substrates. Often
equipped with slitting and
cantilevered shafts for ease of
operation. Usually limited to 12" to 30" in width. |
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Two
Drum Surface Winder |
Material is "surface
wound" as the rewinding roll rests on two rotating drums. Almost
always used for paper and board, and typically for larger widths and
diameters, |
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Single Knife Cutter |
Commonly used for slitting rolls of tape or foam. Unlike
most slitters the roll is not unwound, slit and rewound. Rather a rotating
knife slices into the roll at determined intervals. Very productive where
applicable. Usually limited to a roll diameter of 12" to 18". |
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Add
Roll or "Small Roll" Slitter |
Designed specifically
for the high production of small diameter rolls such as those used in adding
machines. Also useful for a wide variety of other products, however, where
a rewind diameter of 12" to 16" is acceptable. |
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Duplex Center Surface Slitter |
Winds the rebuilding
roll not only form the center but also assists the building roll by driving
the surface. Allows for winding larder diameter rolls and allows for "minimum
gap" winding in some cases. Often used for larger rolls of film and
pressure sensitive applications. |
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Continuous Winder |
High production
machines typically used for specific applications such as producing gift
wrap. Almost synonomous with the brand names Shultze and Elsner. |
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Duplex Turret Winder |
Like the Duplex winder
this machine used two rewind shafts. However at the end of a set the rewinds
"turret" allowing the next set to begin while the first is being taken off
the machine. Typically used for applications such as tape. |
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Sales @
Benick.com
Specialists in slitter equipment, used slitter, slitter for sale, rebuilt slitter,
paper slitter, film slitter, metal slitter, foil slitter, packaging slitter,
converting slitter, installing slitter, duplex center slitter, slitter rewinders
simplex center slitter, doctor slitter, inspection slitter, two drum surface
slitter, continuous slitter, Dusenbery slitter, Rosenthall slitter,
Goebel slitter, Kidder slitter, Cameron slitter, Jagenberg slitter,
Black Clawson slitter, Stanford slitter, Rotoflex slitter, Langston slitter
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1960's Jagenberg 33-12 rebuilt by Benick Machineworks. |
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Two drum surface
slitters are commonly used to slit and rewind paper and board
products. They wind the material by driving the surface of the roll with the
drums while pressure is placed on top of the rewinding roll with a so called
"rider roll". The material is typically slit either with a
score method or a
shear method. They can slit from very narrow widths, about 2 inches, to very
wide widths, in excess of 150 inches. And they can slit and rewind a broad range
of products from tissue to very dense board. There are many variables involved
in choosing the best machine for an application. Feel free to ask for our
advice. |
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Dusenbery 635 Slitter Rebuilt by
Benick Machineworks |
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These
very versatile slitter/rewinders were invented in order to slit certain
substrates which cannot be wound on a single shaft. These materials, such as
most films, will interweave or create other problems unless the slit cuts
are alternated up and down on two rewind shafts. Often each slit cut is
affixed to the rewind shaft through a series of spacers which act as
clutches, allowing each roll to wind correctly. These winders can use
score slitting,
shear slitting, or
razor slitting
methods.
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A
Simplex Center Slitter/Rewinder winds a roll on a single shaft in a similar
way to a
Two Drum Winder. Unlike the
two drum, however, the Simplex rewind shaft grabs the core or cores usually
by inflating the rewind shaft with air. The air causes an internal bladder
to expand thereby pressing buttons or the leaves of the shaft itself inside
the core. The secured core is then driven to wind the roll from the center.
Usually the roll runs against a nip roller which helps remove entrapped air
and induce tension. Sometimes this nip roll can be driven, or a small gap
between this roll and the material being rewound can be maintained, creating
the so called minimum gap. Normally these winders are used for paper or
other materials which are not extensible and have a good profile. A great
advantage over any type of duplex winder is the ease with which the shaft
can be unloaded and restarted. |
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Normally these machines
are between 12" to 36" wide and utilize
cantilevered shafts throughout the
machine. They are commonly used in the label industry to inspect rolls and
sometimes have sophisticated equipment to detect print skips, splices, or
things of that sort. They are also commonly used by converters to rewind
poorly wound rolls or ever to slit rolls into narrower widths. The
cantilevered feature aids in ease of operation and these machines can be
equipped with
score,
razor, or
shear slitting. |
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The Duplex Center Surface Winder winds a roll
both from the center as well as the surface. The center is wound either in a lock core mode or in the
slip differential
mode while the
surface is resting on a driven winding drum with controlled nip pressure.
This driven winding drum assists winding the roll by driving the surface
which can be helpful with certain substrates such as silicone coated
papers. The surface assist also can allow a roll to be rewound beyond the
diameter limitations of a Duplex Center Winder. Normally these machines are
limited to a rewind diameter of about 24” whereas the surface assist can
extend this winding diameter up to 60”. These winders can also be configured
with a minimum gap mode whereby the rewound roll is always kept
slightly away from the driven center drum. This can allow this type of
winder to handle materials with gauge variation. Slitting is usually
shear but
razor or
score can also be used.
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These slitter/rewinders
are designed to produce large quantities of rolls which typically have a
small diameters and usually a small core diameter as well. They come in
manual, semi-automatic, and fully automatic models. Common names are
Dusenbery, Judelson, and Goebel among others.
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Continuous slitters
are commonly used for making small diameter logs of material such as gift
wrap paper. They are typically fully automatic machines which take a
master roll and turn out large quantities of finished rolls requiring only
master roll changes. Common names are Elsner and Shultz.
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These
machines are used to cut small diameter rolls of material (12" to 18")
without having to unwind and rewind the substrate. The log of material is
placed on a mandrel matching the inside core diameter. The log is then
rotated while a rotating blade is inserted into the log at the appropriate
widths. |
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These
machines have duplex winding capabilities coupled with the functionality
of a turret rewind system. They are ideal for high speed automated winding
of small diameter rolls. |
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