Printing surface roughness meter
Surface roughness is a key factor in determining the printability of paper and cardboard. Before Dr. John Parker from MESSMER BUCHEL promoted the PPS method to the paper industry, there were many methods to measure the surface roughness of paper for predicting printing suitability, but none of these methods were satisfactory. Dr. Parker correctly deduced why the method of measuring surface roughness is to simulate the conditions on the printing machine during printing to measure surface roughness.
Printing Surface Roughness Meter - PPS
Paper and cardboard - Determination of roughness/smoothness
National standard stipulates that the smoothness of copperplate paper and news paper shall be determined using PPS
51μm
Why use PPS to measure surface roughness?
Surface roughness is a key factor in determining the printability of paper and cardboard. Before Dr. John Parker from MESSMER BUCHEL promoted the PPS method to the paper industry, there were many methods to measure the surface roughness of paper for predicting printing suitability, but none of these methods were satisfactory. Dr. Parker correctly deduced why the method of measuring surface roughness is to simulate the conditions on the printing machine during printing to measure surface roughness.
The specific principle is as follows: the paper sample is sandwiched between the measuring head and the elastic pad, and subjected to the same pressure as the actual bite pressure in printing. Measure the damping of the airflow under a certain pressure difference in the fine metal measuring ring and measuring surface (see Figure 1). The surface roughness of the paper pattern is calculated from the average cube root of the airflow inside the slit (automatically calculated by M590). Especially the PPS measuring ring and its surrounding slit width are only 51 microns, greatly reducing the impact of paper permeability on measurement, which cannot be avoided by other air leakage instruments.
Why buy PPS from MESSMER BUCHEL?
Very simple - it is! M590 is the third generation PPS of MESSMER BUCHEL. 30 years of PPS production experience and Dr. Parker's professional knowledge have made us the technical core of PPS. MESSMER BUCHEL adopts technology to ensure high reliability and excellent repeatability of testing. The technology has been improved, but the principle remains the same. In MESSMER BUCHEL PPS, the use of microprocessors makes the testing interface more user-friendly and enables testing statistics, rather than just providing test results. Accurate design details, strong quality assurance, and adherence to standards are our principles. The relative position between the probe and the pad must be strictly controlled, as it has a significant impact on the repeatability of the measurement results (see Figure 2). MESSMER BUCHEL adopts a special U-shaped structure, which makes the probe adjustment and fixing mechanism easy to disassemble and clean, but it will never move during testing. The modular structure and built-in diagnostic procedures ensure simple and fast maintenance, reducing maintenance costs. As one of our production processes, each MESSMER BUCHEL PPS has undergone * testing and calibration. The air damping measurement system can be calibrated and the measurement results can be traced back to the MESSMER BUCHEL host. After procurement, users can conduct routine re inspection using the same method. The testing and calibration system for fluid impedance (dummy head) and MESSMER BUCHEL is included in the host price.
Product features/specifications:
ØM590&M595 PPS are controlled by microprocessors
Ø M590 and M595 both meet the standards of ISO reference instruments,
Ø Measurement range: M595 high-precision 0.5-3 μ m
M590 standard range 0.6-6 μ m
Ø 40 character 2-line fluorescent display screen, displaying operation instructions and measurement results
ØThe measurement results are in micrometers, and the relationship between the results and the actual ink film thickness in printing is: ink film thickness=2 → 2.5 x PPS result
ØAutomated statistical analysis
Ø Data printer
Ø Built in diagnostic and calibration procedures
Ø RS232C V24 serial output
ØOptional dust removal system
Ø Optional sample detection
Ø Air permeability test (optional probe)
ØCompatible with TEST LINE/TEST LINK
ØUnique traceability calibration
standard
Measurement range 0.6-6 microns, compliant with ISO 8791/4, TAPPI T555, BS 6563, SCAN standards and national standards
