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Features
Mill
Accurate spine preparation is ensured by a strong mill featuring six notching teeth made of tungsten carbide. The milling height is adjustable. (up to 4mm can be milled off the bookspine). A powerful dust extractor automatically evacuates the paper dust.
Airtight PUR application device
There are multiple advantages to operate with a closed glue application
unit :
- The nozzle spine and side glues with PUR, all done in one shot.
- Optimized glue consumption, no glue remains. In an open tank
system the glue must be processed within a maximum of 4 hours.
- The glue is melted on demand , thus granting constant glue layer
quality. The glue is only melted on the surface, protecting the
remaining glue from thermal stress.
- The glue is prevented from premature curing, ensuring the material
remains useable for a long time. PUR is a reactive glue and can’t be
reheated. Once PUR fully cured it will no more later its consistency.
- Full flexibility at production is granted. With open tank systems, the
operator must achieve maximum productivity during the time the glue
can be processed (maximum 4 hours). Eventual remains must then
be discarded. With the MR 730 PUR instead, the operator can switch
over to another activity at any given moment without affecting the
quality of the ongoing production cycle.
- The extensive effort required to clean traditional open tank systems is
virtually eliminated with the MR 730 PUR.
The PUR application device contains :
1 PUR bulk melter
Bulk melter for curable PUR in pails of 20 kg. Consumption between 3 to
15 kg/h. Features a 280 mm fusion table melting the adhesive only on
the surface. ChemCoat non stick coating, vacuum protection/ gear pump.
1 heated PUR hose
Length 5 m , featured with a temperature control probe for optimal glue
viscosity.
1 EP 48 V SP JUD glue application head
The nozzle opening is motorized and will instantly calibrate to the
thickness of the book block. The glue application head is triggered by a
photocell. Simply set the desired glue cut off on the top and bottom of the
spine and the binder will calculate the appropriate glue application
length. The height of the glue application head is adjustable to ensure a
constant the glue layer thickness reproduction. The clamp speed, glue
pressure and the pump speed automatically calibrate to the thickness of
the book block. These parameters can be programmed in an appropriate
menu.
Pneumati nipping station
Strong and heavy nipping jaws provide the required mechanical force to
form perfectly square bookspines. Even high grammaged covers
weighting over 400 g/m² or critical cover qualities can be handled. The
front and side positioning bars ensure the covers are accurately
registered on the nipping station. The nipping height can be adjusted via
2 setscrews.
Suction cover feeder
Large nonstop suction feeder featuring a blower for cover separation.
The cover stock position can be fine tuned by means of two setscrews.
Scoring
The cover feeder features two double scoring wheels (of which one is
motorized) for cover scoring and two single scoring wheels for eventual
flaps. The scoring depth can be adjusted by means of caliper levers.
Exit slide
The books are softly evacuated via an exit slide, thus even sensible
cover material is protected from being damaged.
Stacker
A motorized stacker can be connected to the exit belt (optional).
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