Device and method for measuring absorbent hygiene products
US10852252B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 2017 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Aug 6, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for measuring absorbent bodies that are spaced from each other on a continuous web comprises at least two microwave resonators configured to measure values of a shift of a resonance frequency and a spreading of a resonance frequency. The continuous web moves through the at least two microwave resonators and the at least two microwave resonators are positioned at an offset with respect to each other in the transverse and transport direction relative to a direction of transport of the continuous web in order to measure the entire width of the continuous web. At least one of a moisture and a density of the absorbent bodies is determined using the at least two microwave resonators to continuously determine the values of the shift of the resonance frequency and the spreading of the resonance frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.