Method and device for making absorbent cores used in disposable hygiene pad
US10182948B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 16, 2012 |
| Grant date | Jan 22, 2019 |
| Priority date | — |
| Expiry date | Aug 10, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2457
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to a method and a device for making absorbent cores used in disposable hygiene pads, the method or device comprising three steps: (A) suctioning of wood pulp fibers mixed with super absorbent polymers into a net structure on a base tissue to form an absorbent core; (B) compressing and embossing absorbent material; and (C) shaping of the absorbent core. The method of the current invention can be used for making different kinds of absorbent pad products. While increasing the tear strength of the product, the method realizes and simplifies the process of making both the absorbent material and the hygiene pad utilizing the absorbent material on the same manufacturing line, and reduces the cost of making the absorbent pads. The absorbent core made by applying the method of the current invention has a new structure formed by super absorbent polymers and wood pulp fibers, wherein the structure enables the super absorbent polymers to be evenly distributed in between the wood pulp fibers. Through the compressing and embossing process, the super absorbent polymers are prevented from sliding or piling together in the absorbent core, which increases the liquid-absorbing c…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.