The Paper Formation Tester measures the (optical) formation of paper according to the Paper PerFect method with core software that has been developed by OpTest™ Equipment Inc. The visual appearance of paper has for many years been the first indication to the papermaker and the consumer alike of the relative quality of the product.
If only there was a way to not only ensure the best formation every time but also to quantify differences information over different scales. This is the concept behind the PROFILE/Plus™ Formation instrument. It uses technology that has been developed to give a clearer picture of paper formation. These 10 scales of a formation give a much truer indication of paper formation than most single number testers.
- New technique partitions formation into different scales.
- Gives a better understanding of how formation quality affects sheet properties.
- Provides more in-depth information than conventional optical formation techniques.
- Easily compares results to a ‘production standard’ or to ‘perfect paper’.
- More reliable and consistent than visual assessment.
- PROFILE/Plus Automated Testing System Ready
Features of Paper Formation Tester
Technidyne has earned a reputation for excellence as the pulp and paper industry‟s leading supplier of optical quality measurement instruments. The PROFILE/Plus™ Formation is an advanced instrument that provides fully automated measurement of optical formation to provide in-depth analysis of structure non-uniformity. While formation is usually not an end-user property by itself, it can be used as a predictor for other paper properties and as an overall paper quality indicator.
A Different Approach
Most commercial formation measurements collapse the two-dimensional local grammage (or opacity) map into a single number, such as the “Formation Number”. This is the Coefficient of Variation (COV) of local grammage or of local opacity. The PROFILE/Plus™ Formation Tester determines the formation for all of the scales of nonuniformity, which constitutes the sheet structure, from sub-millimetre to several centimetres. This technique provides a more accurate picture of the overall uniformity of the sheet.
Establishing a Production Standard
The Paper Formation Tester results of two sheets can be compared by dividing the formation values of the measured sheet by that of the „reference paper‟, or in practical terms the „production standard‟. Thus a relative formation value above 1 for a particular formation scale indicates a better formation than that of the reference sheet. Contrarily, a relative formation value below 1 means that at this scale of formation the sheet is worse than that of the reference sheet. By partitioning formation into its components as a function of scale, the formation values quantify the difference of formation between these two sheets, something that the simple coefficient of variation could not achieve.
The visual appearance of paper has for many years been the first indication to the papermaker and the consumer alike of the relative quality of the product. The PROFILE/Plus™ Formation technique partitions formation into different scales, which gives a better understanding of how formation quality affects other sheet properties. It also quantifies the differences information from one reel to the next and provides a PASS/FAIL determination, which is a valuable tool to the papermaker.
Benefits of the Paper Formation Tester
- The automated measurement of formation across the entire width of the reel provides key information about the operation of the paper machine, thus allowing better, more stable production.
- The different approach used by the PROFILE/Plus™ Formation provides a more accurate picture of the sheet structure. This allows the machine operators to more reliably monitor other sheet parameters, such as strength, thus reducing costly retests.
- Establishing a ‘production standard’ to use in comparison to daily production means having an effective tool to adjust the quality of the paper being produced. This in turn will enable the establishment of tighter control limits, which will help to optimize the production and save money.
- The PASS/FAIL function allows operators to immediately determine if the production meets the required specifications, thereby reducing customer claims for rejected product. PROFILE/Plus™ customers have reported that savings can be realized in the areas of furnish, chemical addition, customer complaints, and reduced paper machine breaks. Manpower efficiency can also be improved by increasing the testing frequency and accuracy, which lowers the overall cost of testing.