Infobox 10 2012 WCS

Independent BHS Warp Control System (WCS)
available for NON – BHS corrugators
Infobox 10 / 2012
External use allowed
We are glad to inform you that VDH has sold the first independent WCS system on a full
Agnati corrugator. This corrugator is supposed one of the fastest running complete
Agnati lines worldwide. It was installed in 2001 and can produce at a maximum speed
380 m/min. The corrugator is equipped with 2 single facers, Agnati Master and the line
runs with an average production speed of approx. 220 m/min
As you know the Warp Control System (WCS) is a correction system to improve board
flatness. The system is used to correct up- and down-warp and it’s operated via touch
panel, located in a control desk
The correction of warp will be done through a slider on the touch screen. The more
sliding in one direction the more changes will be done.
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The system and the operation are exactly the same as
already known from BHS installations. There will be no
differences in appearance. This offers the advantage of
having the same system for all corrugator within one
group.
There are customers requesting for having this Warp Control System for their BHS
corrugators as well as for their Non BHS or mixed lines. They don’t want to have different
suppliers.
What did we sell to this customer?
He will run the WCS system only by temperature, so we will install temperature sensors on
his corrugators.
He didn’t choose for the offered moisture sensors because he understands the possibility
of regulation moisture isn’t so easy and he’s questioning the advantages/ROI of doing it.
What additionally must be done on a NON- BHS corrugator in order to install this
WCS system ?
Point 1: QDM system
The problem for doing an installation on mixed lines is the missing data base of all
production relevant values.
Therefore we have to implement the BHS QDM system.
The QDM (Quality Data Management) manages (storage and recall) information for the
grade and order data of the WET-END. In combination with an order change signal, the
QDM can execute control tasks (e.g. storage of quality data, paper value and order
related settings) in the WET-END .
This required information will be supplied via a protocol generated by the Agnati dry-end
controller.
Additionally we will store 10 different glue curves for the single facers within the QDM,
which aren’t available in the Agnati Master control
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Point 2: Machine check
In a mixed or Non-BHS line it’s necessary to check the condition of the each machine. It
must be secured that every single machine has the possibility to be adjusted accordingly
to the required parameters.
We examined the corrugator, checked the machine adjustment possibilities (e.g.
preheater wraps, hotplates, steam and condensate regulation etc.) and looked for
installation space for the temperature sensors.
By this upcoming installation we found that the Agnati Master single facer has no
possibility for wrap arm adjustment on the internal preheater. This wrap adjustment is
mandatory for a successful WCS system and therefore we need a solution.
VDH sees two options:
a.) An upgrade of the existing pre-conditioner by an independent wrap arm adjustment,
which can be controlled from the outside and/or integrated into the WCS system.
This solution was already developed for the Agnati single facer S90 for the first time, but
it’s now available for Agnati Master too.
This upgrade can be sold as a stand alone solution too.
b.) If this wouldn’t be successful we had the opportunity to install the external precondition
(600 mm with wrap arm) from the BHS single facer AFP under the bridge and
disconnect the original ones.
This proves how important it is to check the actual configuration for each corrugator
before we are going to install the WCS system.
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Point 2: Additional measures:
The main reason for succeeding over our competitors
was that the customer wanted to work with the BHS group and get the full support for all
corrugator related issues, not only for this project but also for the future.
There were two points taken into consideration:
1.) By having already the QDM system installed, a later exchange of dry-end machines
would become much easier and less expensive.
2.) The most important key factor was the possibility for him that the BHS group can
supply not only machines but complete solutions and important, production trainings.
In this case the customer was so much convinced that we also run a PEM Masterplan for
his complete Agnati corrugator.
The additional improvements determine by this PEM Masterplan, will be discussed and
implemented at extra cost.
The installation of this system will take place in March 2013 and our customer agrees to
act as reference site.
That means that we can bring our customers to their plant in Holland and present the
WCS plus additional upgrades done on Agnati machines – here on one of the fastest
running Agnati corrugators.
We will keep you updated on further progress !!
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