Superabsorbent polymer targeting registration of dry formed composite cores
US6703846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2002 |
| Grant date | Mar 9, 2004 |
| Priority date | — |
| Expiry date | Jan 16, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/531
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for adjusting the targeting of superabsorbent material in absorbent cores based on the timing of a cutting device are disclosed herein. After targeting superabsorbent material into a segment of absorbent core material, a first sensor is used to determine a change in concentration of superabsorbent material over the length of the segment, or alternatively, a rate-of-change in the concentration is determined. The change in concentration, or rate-of-change, can be interpreted as the timing of the superabsorbent material targeting. A second sensor is used to determine the timing of a cutting device used to separate the segment from the remaining absorbent core material. The timing of the targeting of the superabsorbent material can then be synchronized with the timing of the cutting device for targeting of superabsorbent material in subsequent segments of the absorbent core material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.