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Friday, January 25, 2013

Calibration Saves Money

Recently a pulp mill contacted us about calibration standards. They had a shipment of 400 tons of pulp rejected because the brightness did not meet their end-user's specification.  The specification was 0.3 units of brightness higher than what they measured the incoming pulp.

At a price of US$700/ton, the rejected shipment was worth US$280,000!!

What's The Cost of Proper Optical Calibration?
Technidyne acquired the rights to produce the 'GE' directional brightness tester with the understanding that calibration is very important. Monthly calibration standards from Technidyne cost about 0.1% of what a rejected shipment (above) might cost.  As the 'yellow book', Technidyne's Seminar Manual - Measurement and Control of the Optical Properties of Paper, states, "an instrument can only be as accurate as the standard to which it is calibrated."

Proper optical calibration...
  • insures the instrument is working correctly
  • provides diagnostic information
  • addresses photometry (linearity & amplitude calibration)
  • addresses spectral (wavelength calibration)
  • is specific to the geometry
  • provides a means to compare data from measurement to measurement (repeatability), instrument to instrument (reproducibility) and location to location
  • must be done on a regular basis
  • is performed by trained personnel
For more information see the Technidyne Website.

Wednesday, January 23, 2013

Why Measure Roll Hardness?

  • When a runnability issue is reported by a converter or a printer, a number of actions are generally taken by the manufacturer to identify root causes of the issue
  • The examination of Cross Direction (CD) and Machine Direction (MD) profiles of key properties, such as grammage, caliper and density
  • Offline measurements are typically very accurate but are time consuming; online measurements are not accurate enough
  • The advantage of systematic reel hardness measurement is that it can be carried out quickly and it has the potential to identify problematic reels 
Technidyne offers Tapio RQP (Roll Quality Profiler) to the North American Market

Benefits of Tapio RQP

  • Roll hardness measurement has been widely used in the paper industry
  • Traditionally, hardness across the reels is gauged either manually by beating the surface with a wooden stick and listening sound or by using a hammer type device
  • Measurement techniques and instruments that were employed were at times inferior or did not provide a sufficient resolution to recreate the hardness profile across the reel to conduct a proper analysis
  • The test data collected from these measurements have not been clearly linked up with other paper properties to diagnose the root cause
  • Also being a subjective measure, the evaluation is heavily dependent upon operator’s experience
  • Tapio RQP is the first hardness measurement device designed for fast, accurate and operator independent measurement of paper roll, plastic film roll or machine roll true hardness profile
  • Tapio RQP is the fastest and the most accurate system to detect reels that need to be excluded in printing or converting processes.
See the video on How a Roll Hardness Measurement is Made with the Tapio RQP


Technidyne...for good measure. Visit us at www.technidyne.com

Monday, January 21, 2013

Modular vs 'Big-Box' Automated Testing

Technidyne's PROFILE/Plus automated test system has existed for over 12 years.  It was the first modular approach to automated testing in the Paper Industry.  Before the PROFILE/Plus modular concept customers had to purchase an entire 'big-box' system all at once. To justify the US$1 Million price tag, people were eliminated, major cost justifications were instituted, and a fixed set of tests were etched in stone for 10 years.  By contrast most PROFILE/Plus systems have been built over time. Many PROFILE/Plus systems were started with an initial investment of US$15,000.  Manpower is usually reallocated to more important, analytical tasks after PROFILE/Plus implementation since the automated system provides efficient, frequent, quality data on each roll of paper.

Over time, as testing needs and strategic objectives change, PROFILE/Plus systems can be reconfigured to accommodate the new requirements of the mill.  In some cases a single system is split into two systems. This is simply not possible with traditional, 'big-box' systems, and the investment is thousands of dollars with the PROFILE/Plus instead US$500,000 or more for the 'big-box.'

The US$1 Million price tag for a 'big-box' system doesn't even include the cost to install the 10 ft X 5 ft structure into the lab.  PROFILE/Plus modules sit on the existing counter top.

Since the inception of the PROFILE/Plus product line, compatibility has been a core feature.  As an example, Technidyne still maintains Hagerty Technologies smoothness, porosity and opacity modules which are over 20 years old.  Therefore, if you are building a system over time, you can feel confident that you won't have to be concerned about compatibility.

Tailor making a system to meet your mill requirements is easily accomplished with PROFILE/Plus, today and tomorrow. 

Technidyne...for good measure. Visit us at www.technidyne.com

ISO Heirarchy for Optical Calibration Standards

Calibration is extremely important to certify your results, validate production, guarantee customer requirement and compare from one site to another. Calibration for optical properties in the Paper Industry includes calibration of spectral reflectance (minimally 400-700 nm), fluorescent (UV Level D65 & C) and non-fluorescent levels.  ISO employs a three level system of distribution of calibration standards as described in ISO 2469.  The three levels are:

IR1: The perfect reflecting diffuse (absolute reflectance)

IR2: Standardizing laboratories; National Research Council of Canada (NRC), NIST (USA) and PTB (Germany)

IR3: Authorized laboratories:

         USA        Technidyne Laboratory Services
         Canada    FPInnovations
         Finland    Labtium
         France     Centre Technique due Papier
         Sweden   Innventia



ISO STANDARDS HIERARCHY
Laboratory
Activity
Standard Issue

ISO Standardizing

Establishes IR1 (perfect reflecting diffuse)
Evaluates IR2 against IR1


IR2 (level 2 standard)
ISO Authorized
Evaluates IR3 against IR2

IR3 (level 3 standard)
Testing
Calibrates test instrumentation with IR3




All of the ISO Authorized Laboratories exchange IR3's on a monthly basis to see how they agree and as a diagnostic tool to detect errors.  The labs also meet at least every 18 months to discuss procedures, discrepancies, concerns and coordinate projects.

To learn more about Technidyne's calibration process and materials, contact Jon Saatvedt and see our website Technidyne Laboratory Services

Technidyne...for good measure. Visit us at www.technidyne.com

Why Measure Roll Hardness?



  • When a runnability issue is reported by a converter or a printer, a number of actions are generally taken by the manufacturer to identify root causes of the issue
  • The examination of Cross Direction (CD) and Machine Direction (MD) profiles of key properties, such as grammage, caliper and density
  • Offline measurements are typically very accurate but are time consuming; online measurements are not accurate enough
  • The advantage of systematic reel hardness measurement is that it can be carried out quickly and it has the potential to identify problematic reels 
Technidyne offers Tapio RQP (Roll Quality Profiler) to the North American Market

Benefits of Tapio RQP

  • Roll hardness measurement has been widely used in the paper industry
  • Traditionally, hardness across the reels is gauged either manually by beating the surface with a wooden stick and listening sound or by using a hammer type device
  • Measurement techniques and instruments that were employed were at times inferior or did not provide a sufficient resolution to recreate the hardness profile across the reel to conduct a proper analysis
  • The test data collected from these measurements have not been clearly linked up with other paper properties to diagnose the root cause
  • Also being a subjective measure, the evaluation is heavily dependent upon operator’s experience
  • Tapio RQP is the first hardness measurement device designed for fast, accurate and operator independent measurement of paper roll, plastic film roll or machine roll true hardness profile
  • Tapio RQP is the fastest and the most accurate system to detect reels that need to be excluded in printing or converting processes.
See the video on How a Roll Hardness Measurement is Made with the Tapio RQP


Technidyne...for good measure. Visit us at www.technidyne.com

Monday, January 14, 2013

PaperWeek (Canada) EXFOR: Feb. 4-8, 2013

The annual conference of the Canadian Pulp and Paper Industry, PaperWeek, is being held Feb. 4-8, 2013.  The conference will take place at the Fairmont Queen Elizabeth Hotel in Montreal. 


Tradeshow
The tradeshow part of PaperWeek, formerly known as EXFOR, will take place Feb. 5 and 6 from 10 AM to 7 PM each day.  Technidyne will be in booth #44 of the tradeshow.  Some of the equipment that will be available for demonstration and testing are:

Learn more about these products and others at the Technidyne Website.

Technidyne...for good measure. Visit us at www.technidyne.com