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Newsletter - Technology update from Jensen Barker

 

 

March 2006 

 

 

 

Dear Papermaker,

Cameras and Lights
We are also introducing a new range of millsight plastic camera housings and lights which have been specially designed for use in harsh environments, they can be installed on any event capturing system or machine vision system. Quality images from the cameras and good lighting, are the key to the success for any of these systems. Upgrading to millsight cameras, housings and lights will transform any existing system, let us know if you are considering a cost effective upgrade to your camera system.
Millsight is a joint venture with ourselves and MIV-AB in Sweden.

News - Representing new companies in the UK

Summit Engineering (USA)
Design and manufacture of pin hole detection system.
The DC-2000 system is using infrared optics to detect pinholes down to 0.5mm at speed up to 1800 metres/minute.
The system can be connected to an optional 'Drop on Demand' ink marker system and reader located on the winder.
If you are looking to add a hole detector to your machine, or replace an older technology system, then the Summit DC-2000 can be a very cost effective solution. Pin hole detection

 If you are considering upgrading your existing headbox to dilution control, we can offer a complete retrofit upgrade solution, coupled with dilution control actuators from Digital Engineering in Sweden. Dilution control headbox

 

 

 

Newsletter - Technology update from Jensen Barker

 

 

August 2005 

 

 

 

Dear Papermaker,

Camera system no-touch optimisation service
Paper machine camera systems have been with us now for a few years, there is no doubt that they have become an integral part of the papermaking process. However we have seen there are many installations where recorded images could be improved. Our new service looks at identifying areas for improvement.

We bring to site a one (1) camera system and high frequency light. Starting at the wet-end of the machine, we take short movie clips form each of the accessible positions, moving down the process to the dry end. Even though there will be no paper breaks during the recordings, enough image detail will be captured.

We then create a report showing images from each position, noting the shutter speed and iris opening. This report can then be used as a comparison to captured images from the existing system.

Recommendations will then be made as to how your existing system can be improved.

Basis weight profile problems
Consistent control of the basis weight profile is reliant on many factors including: good profile measurement from the scanner, correct mapping of the measured profile back to the headbox, condition of the top-slice and bottom apron, effectiveness of the actuators, and condition of the slice to spindle couplings.

For many years we have been helping mills in all these areas. With regular attention, the chances of any of these parameters slipping out of control is minimised, also a historical database can be built up.

We start by conducting a technical survey, from this we make recommendations for a preventative maintenance service plan to be established. Many mills have seen the immediate benefits and have taken our services on a regular basis for many years.

Some mills have even gone even further and created a long term working partnership with us so that any issues with their basis weight profile control is reacted to in the best possible way.

 

 

 

Technology update from Jensen Barker  
  December 2004 
   
 
Dear Papermaker,

In this our third email newsletter, we are focussing on Jakob steam showers and how they can be used to improve your process.

Steam showers have been used since the early ‘80s, many of the early boxes are still bringing results today. But sadly there have also been many steam showers removed due to problems with pollution, dripping and poor performance.

Hans Jakob and his group of Swiss engineers have developed a range of steam showers designed to overcome and eliminate these basic problems, plus incorporating many new advantages over the traditional ‘punched plate’ steam shower.
AquaJenty steam shower for wire couch and press applications

Steam showers are excellent tools for controlling moisture profiles, achieving machine speed increase or dryer load reductions.
There are many Jakob systems installed on world class machines.
More features listed below.

AquaJenty steam shower for calender and finishing application

For control of smoothness, two sidedness and curl, AquaJenty steam showers give the precise control of steam just before the calender nip, influencing the surface properties of the paper web as it passes through the calender

The profiling control valves are designed to give a very linear flow control throughout its range. All actuators are available with integral position feedback sensors for display on the DCS/QCS control system.

All Jakob steam showers have a pre-heated steam jacket surrounding the process steam, absolutely preventing drips and spitting.

ComboJenty steam shower

Hans Jakob has taken steam shower to the next generation by the introduction of the ComboJenty Steam shower.

Extending the moisture profiling range, by introducing water into the profiling valve body, a controllable precise layer of water is transported to the web using steam as the carrier.

For wet end applications, this means dramatically extending the moisture profiling range and probably making the use of traditional rewetting devices redundant.

For calender and finishing applications, having a controlled water film at the very edge can eliminate dry edge cracks and subsequent breaks.

ComboJenty schematic

If that is not enough, what else sets Jakob steam showers ahead of the rest?

Jakob steam showers are not constructed around a conventional steam header pipe and large ‘punched plate’ diffuser, the Jakob design results in a greatly reduced cross section, allowing installation in the tightest of applications.

Special engineered solutions available for easy removal from the paper machine for servicing, where conventional boxes stay locked in the machine year-on-year, with the subsequent lack of maintenance.

All steam showers have a pre-heated steam jacket surrounding the process steam chambers, absolutely preventing spitting and dripping, especially at start-up. Just turn on the process steam and full drip-free operation immediately.

The diffusers are easily removed or replaced for alternate flow characteristics for different process requirements, for example at the edges. They can also be designed with angled jet flows etc.

The diffusers are also less reliant on the traditional requirement of a 10mm gap to the web, they work just as well up to three times that distance.

Steam spillage can be removed with incorporated evacuation ducts, again steam heated to prevent dripping.

All service connections, pneumatic, steam, also the condensate drain valves are brought out of the machine frame to operator accessible positions on the machine.

Steam preparation system

It is important for any steam shower to have the correct steam supply for consistent and reliable results, Jakob designs and supplies complete steam supply systems using only tested and proven components.

Existing steam shower user or a new application

If you would like us to look at the options for improving the performance from your steam shower, or have new requirements then please contact us using our reply link below

Link to reply form
 

 

Newsletter - Technology update from Jensen Barker
 
  July 2004 
   
 

Dear Papermaker,

This month new products for papermakers

From Paul Wegner - Germany - WECA Carbon Fibre doctor blades with imbedded Copper Mesh to reduce static at the calender.

 WECA Carbon fibre doctor blades with copper mesh

New technology from Paul Wegner to reduce static build up in calender area.

Production details - Thermoplastic produced (Continuous–Compression Moulding) 20 - 100% carbon fibre material with Polyetheremid and copper mesh.

Application - Calender and dry end of paper machine.

Advantage - Due to the combination of carbon & copper the electro-static charge in the dryer part and the calender, soft-calendar part will be clearly reduced.

No burning in the paper machine because of the PEI Matrix.

The complete manufacturing process is under strict quality control.

The copper treats the calender roll with care.

www.paulwegner.de/contenido/cms/englisch.htm

 
 
   
     
 


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