Optical and surface
A dynamic analysis of liquid droplets applied on a material surface can be used to determine the performance of the surface during a later process.
The basic concept of static contact angle has been in use for some 200 years. Today’s camera technology and powerful computers has taken the original concept of static contact angles to a new level, where the dynamic interaction between a liquid droplet and a surface can be studied as a function of time.
Contact angles as a testing method have over the years moved far outside the solid surface applications for which they originally were defined. When the contact angle concept was introduced for several applications some 50 years ago, it was not commonly accepted by the industry because of difficulties in obtaining reliable correlation with experienced problems in printing, coating and gluing applications.
Today the use of dynamic contact angle and sorption as a function of time have gained wide acceptance as reliable test for applications occurring also in fractions of a second. The practical usage of contact angles and the relationship between wetting (contact angle) and sorption (penetration) can explain practical problems related to printing, gluing and coating.
Read more about measuring the dynamic absorption and wetting
Products
On-line glossmeter
On-line-gloss-measuring systems are based on the latest digital technology. Because of their modular structure they can be delivered as individual parts or as complete system specifically designed in accordance with the requirements of the customer.
Glosshaze
Portable, accumulator-powered glosshazemeter for the measurement of scattered light of low in intensity close to main reflection of high-gloss surfaces. The device consist of a sturdy construction with aluminium housing and is easy to use. It offers an objective glosshaze evaluation with immediat indication of the measured value.
Reflectometer
Whiteness describes the appearance of a white coating. As there does not exist absolute white, there will be used the percentage of chromatic pigments deviating from absolute white as the tone of a white pigment (DIN 55980) for the characterisation. A high degree of whiteness means a small tone of a white pigment.
ZGM1020 - 1022-1023 Glossmeter
Simple, portable device for gloss measuring.The possible angles are: 20°, 45°, 60°, 75°D, 75°T or 85°. The results can be read on the device. The device doesn't contain an USB connection.
Mini glossmeter
A precision glossmeter which is portable, robust and can measure under 1 angle. Small in the dimensions, this lightweight glossmeter is able to measure on very confined areas, curved surfaces and surfaces that are not uniform. The possible angles are: 20°, 45°, 60°, 75° or 85°.
ZGM 1110 glossmeter
This tiny instrument can measure under 2 or 3 angles. The instrument is operated by 'Gloss Tools' software, which enables an easy transfer of the measuring data in Microsoft Excel.