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Thursday, July 30, 2015

INDIA: Passing the Torch

Technidyne has established a new sales and service agent in India, Polytech Instruments PVT LTD.  Technidyne had been represented by Technico and principal, Mr. B.S. Ramamurthy since the 1980's. Mr. Ramamurthy is retiring. 

Polytech Instruments

Polytech was founded in 2004 by Mr. Jagdish Maurya and began its operations in Mumbai.  The company has a highly effective sales and after-sales infrastructure to cater to clients from across India with dedicated managers in the South, North, East and West Zones optimizing operations and ensuring maximum results.  Polytech represents Technidyne as well as other manufacturers from across Europe and the USA providing specialized laboratory testing equipment. They also sell, service and calibrate the Hanatek, Taber, Mark-10, Gintronic, CO.FO.ME.GRA, Nitronic, Ray-Ran, Benz and other product ranges.

We are very pleased to bring Polytech into Technidyne's worldwide family of representatives.

Find the Technidyne Agent in your part of the world.

Monday, July 27, 2015

TAPPI Brightness Calibration History

The Paper titled “Instrumentation in Brightness Grading” by Myrl  N. Davis of Kimberly Clark, was published in  Paper Trade Journal in  1935. This paper  provides a good deal of information about the formative days of the TAPPI/GE  Brightness tester and calibration system.

In the two or three years preceding November, 1933, Davis and his associates spent most of their time using and attempting to interpret and apply the data obtained using instruments for measuring the color of “white” book papers. They discovered that when two samples of paper were compared visually and by measured reflectances of various colors of light, it was found almost invariably that the visually “brighter” of the two samples reflected the higher percentage of blue light.

The first recorded attempts to find a correlation between test results and the cost of several grades of white paper were  made in November 1933. The reflectance of blue light and goodness of formation were found to be the only measured properties which were even closely associated with the cost of the papers tested. Both properties were selected by the Grading Committee of Book Paper Manufacturers Association as physical qualities upon which to base a system of paper grading.

The term “brightness test” was immediately applied to the measurement of the reflectance of blue light and the instrument for making these tests came to be known as the “brightness tester” before anyone had more than a vague idea of what the instrument would be like.

Davis, came to the conclusion, based on experience with two dissimilar instruments, that an instrument suitable for making the brightness test and capable of the necessary accuracy could be built. They established the requirements for such an instrument, and when the design was offered by the General Electric Company, they gave their approval.

The decision to attempt the use of the brightness test in the grading of uncoated book papers was made on November 16, 1933. The first model of the General Electric Reflectance Meter was delivered to the Institute of Paper Chemistry on December 21. On January 16, 1934 the  IPC  was able, not without some misgivings, to present to the Book Paper Grading Committee a complete set of brightness data on all samples of uncoated book papers presented for test. From this data, the official brightness values for grade separation were adopted and the brightness scale was, thereby, officially fixed.

At that point, the work of calibrating, distributing and servicing brightness testers and the responsibility for maintaining the brightness scale in its proper position was assumed by the Institute of Paper Chemistry. Subseqently, in September, 1934 a bimonthly calibration service was begun by IPC.

The above was all taken from the paper “Instrumentation in Brightness Grading” by Myrl N. Davis.

Here are some other facts:

In 1955, GE turned over the manufacture of the Brightness Tester to the Martin Sweets Company.

In 1973, Martin Sweets Co. turned the manufacture of the Brightness Tester over to Diano Corp.

In 1978, Diano Corp turned the manufacture of the Brightness Tester over to Technidyne Corporation.

In 1982 Technidyne began shipping instruments directly to paper industry customers, rather than shipping all instruments to the Institute of Paper Chemistry.

In 1989, Technidyne established its standardization laboratory and began shipping calibration standards to the Pulp and Paper industry.

In 1998, Technidyne became an ISO Authorized Laboratory.

Monday, July 20, 2015

Recycling: Color Stripping & Dye Removal Index

In 1993, a dye removal index (DRI) was put forth by Patrick Sharpe & Randy Lowe to study color stripping efficiency.  The percent color removal is calculated from the dye removal index as follows:

When DRI is calculated for each bleaching step, the value obtained is intended to be an indicator of the percentage of total color which has been removed.  Since DRI is a single variable parameter, it yields no information regarding the direction of the color shift which takes place from one bleaching step to the next.

What is your experience with DRI?

Reference: Patrick E. Sharpe and Randy W. Lowe, "The Bleaching of Colored Recycled Fibers", TAPPI 1993 Pulp Bleaching Conference Proceedings, Book 3, PP 1205 - 1217 (Nov. 1993).

Thursday, July 16, 2015

NEW compact Charge Analyzing System from AFG

CAS touch!
CAS touch! is now available from AFG for measuring particle charge in the wet end of the paper/board production and in any aqueous charge system.

There are a number of advantages of the new CAS touch!:

  • Smaller and significantly lighter than comparable devices
    • Comfortable transport (carry-on luggage size)
    • approx. 3.3-4.25 kg (depending on model)
    • 17 cm x 28.5 cm x 17 cm (W x H x D)
  • Latest state-of-the-art touch screen with display of results and curves
  • External keyboard connectable (USB or wireless)
  • Ready to use without assembly of further components
  • Easy handling, clear and simple to understand measuring procedures
  • Compact and robust construction

Size comparison of previous CAS with the new CAS touch!
There are three models available:

  • CAS-I touch! - one integrated titrator
  • CAS-II touch! - two integrated titrators
  • CAS-E touch! - connection of external titrator or hand titration

Technidyne Corporation is the exclusive sales and service agent for AFG and emtec products in North America. Contact Rodger for more information.

Thursday, July 9, 2015

NEW Color Touch™ X Released to Production

Tom presenting key features of the
Color Touch X to Technidyne
Today, the Color Touch™ X was released to Production. This means that the instrument has moved from the multiple stages of Research & Development to the Production Department. The manufacture of the new spectrophotometer will begin.  There are already orders on hand for the new generation of the Color Touch™ instrument. These orders are from Asia, South America, and North America.

The Color Touch™ X will feature expanded wavelength capabilities, greater repeatability and reproducibility, automated calibration, touch screen user interface, trending, tolerancing and other great features.

For more information on the Color Touch™ X, contact Tom Crawford, VP-Sales & Marketing.

Monday, July 6, 2015

From the testing lab: paper calibration standards FAQ

 Why are paper standards used instead of some other material for primary calibration?

There are two main reasons to use paper for the calibration media for brightness, color, fluorescence, whiteness and other paper measurement devices:

  1. When transferring calibration from a Master instrument to any other the best possible agreement is achieved using the same media as that which will be measured.
  2. It ensures that all the characteristics of the resulting measurement are taken into account during the calibration process e.g. translucency, fluorophores, pigments, directionality, uniformity, gloss.
How long are the paper calibration standards good for after they are opened?

Standards are only certified for 3 weeks after they are opened.  Depending on the way they are handled, they could still read correctly after that period.  It is the mills decision on how often to purchase the standards and how important is it for their instrument to be accurate as possible.

Is there any alternative calibration standard that would last longer?

The paper standards are the only thing we offer for the primary calibration according to the TAPPI Test Methods (e.g. T 452) and ISO Standards (2469).  Because the brightness of a sheet can change due to age of the standard, surface characteristics, temperature & humidity, cleanliness of the lenses in the instrument and how the standards are handled during calibration, the certification is short.  This doesn’t mean the standards won’t last longer, but it is related to the care of the standards.  Here are best practices for the care of the instrument.

  1. Keep the surface of the instrument as clean as possible. 
  2. Put something over the sample opening when not in use. 
  3. Protect the surface finish of the working standard. For TAPPI instruments, keep the opal in a small box or on a towel to protect the surface finish. 
  4. Clean the working standard before you use it (even when it looks clean and wiping it on your shirt is a bad practice). 
  5. Recalibrate to a clean working standard at least every 8 hours; more often could be needed depending on lab and equipment.
  6. Replace the lamp every 3 months per the manual.  Just because the lamp is working does not mean the spectral response is correct. 
  7. Primary Calibration to a new set of standards at least monthly.  This could be required more often depending on lab and equipment. 
  8. Semi-Annual Preventative Maintenance service.  We also offer Annual and Quarterly PM service.  
NOTE: The Color Touch instruments have an internal working standard which is protected from the elements and ensures better repeatability and less drift over time.  Also, the Color Touch instruments use a xenon flash lamp which has a lifetime of years not simply months.

Thursday, July 2, 2015

Technidyne Employees, Here to Stay!

2011 Thanksgiving Turkey Shoot with Nerf Guns
One of the key elements of a small, family-owned company like Technidyne Corporation is the ability of the owners and managers to get to know employees and develop relationships which last. Yes, employees have a job to do, but greater understanding of people's objectives, goals and challenges can occur.

The Bureau of Labor Statistics of the U.S. Department of Labor report issued in 2014 had the following:

  • Median tenure  - men 4.7 years & women 4.5 years (unchanged from the 2012 report)
  • Percent of workers with 10 years or more tenure - men 30% & women 28%
For Technidyne, average tenure is 17 years and the percent of workers with 10 years or more tenure is 72.5% with 38% having 20 years or more tenure. We have achieved this even with some recent departures.
2010 NCAA Basketball Sweet 16 Corn Hole Tournament

We are very proud of these facts. It is difficult to keep workers these days. With changing demographics, increasing global competition, more legal concerns/constraints and changing technology, workers often find many different reasons to move to other employment.

We cherish our hard-working employees that help us achieve higher levels of success. We invest in them through training, updated work spaces, a brand new kitchen/break-room, cook-outs, and the occasional creative idea (e.g. going to see Spider Man at the movies, company trivia contest, BINGO, Turkey Shoot with Nerf guns for Thanksgiving, and Sweet 16 corn hole tournament among others.)

Thanks to our employees for helping make Technidyne a great company!