The thickness of a product - be it film, paper or nonwoven - has a direct influence on its quality. In the case of packaging material, for example, parameters such as air permeability and tear resistance must be exactly right. Otherwise it cannot fulfil its task of protecting products from external influences and guaranteeing their integrity. However, this can only be achieved if the material thickness is exactly as specified - and this for each individual production margin.
While homogeneous, reliable and functional products are a necessity for the quality standards required by customers, they have another advantage. High quality goods that exactly meet the specifications reduce production costs. You save raw material and energy by measuring and controlling the web thickness of the material.
Thickness measurement of fabric webs
Web thickness measurement
Our thickness measurement solutions guarantee our customers high quality goods while increasing the efficiency of the production process. The traversing quality measuring system Qualiscan QMS records the desired parameters and provides real-time feedback on the values. Thus, defects can be corrected immediately. Depending on the application and condition of the product, we provide the appropriate sensors.
Sensors for thickness measurement
Gravimat FMX-T
Measurement of basis weight (mass per unit area) / thickness / density
Transmission of X-rays
The Gravimat FMX-T permits the contactless and traversing measurement of basis weight (grammage) / thickness of the running product webs over the entire product width. It measures thin film, nonwovens and other fabric with high resolution, measuring accuracy and absence of flaws.
<5 kV
The sensor variant <5kV is completely exempt from radiation protection regulations in Europe and many other countries.
Product Highlights
- Non-nuclear
- Contactless, non-destructive
- Intelligent sensor with fast onboard micro processing
Customer benefits
- Non-destructive, continuous measurement of basis weight / thickness
- High measuring accuracy
- Low maintenance and low cost of ownership
Low voltage but high accuracy
The Mahlo FMX-T is a low voltage X-ray sensor that measures the basis weight (or calculated thickness) of thin films, nonwovens, and other webs with ultra-fine resolution, accuracy and defect detection.
There are a lot of benefits:
- Non-Nuclear: X-ray tube works without radioactive isotope emitter and can be turned off
- X-Ray energy below 5kv and exempt from Regulations!
- Can measure a large range of thickness down to very thin films
- Excellent CD resolution for accurate profile control
- Finely focused measurement spot for very narrow Streak / Die Line / Defect Detection
- Virtually no measurement noise
- No water cooling required (< 5 kV)
The Gravimat FMX sensor consists of a compact X-ray tube and its high voltage supply as well as special modern X-ray detectors with the electronics for data acquisition. It is completely insensitive to environmental influences such as temperature and humidity. This new measuring principle with the proven components is used for data acquisition and processing by Mahlo and is therefore fully compatible with other products of the Qualiscan QMS family.
The way in which X-rays interact with mass allows the measurement of a very wide range of basis weights with only one sensor - from 50 - 20,000 g/m2 with the fabric on a counter roll or also free-floating!
Specification | Value | Unit | ||
---|---|---|---|---|
Acceleration voltage | <5 | 8 - 15 | 15 - 50 | kV |
Measuring range | PET: 5 - 1000 | PET: 14000 | PET: 99000 | g/m² |