Brewing bag and use thereof
US7763295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2007 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Jul 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1362
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An infusion bag made of a nonwoven textile fabric is described, which includes fibers and/or filaments made of at least one filter material, the textile fabric having a hot-sealable surface which is formed by hot-sealable fibers and/or filaments made of at least one hot-sealable material. It is provided according to the present invention that the fibers and/or filaments made of the filter material and the fibers and/or filaments made of the hot-sealable material are present in the textile fabric in the form of a mixture, the proportion of the fibers and/or filaments made of the hot-sealable material increasing over the cross section toward the hot-sealable surface of the textile fiber as a gradient. The infusion bag according to the present invention is characterized by excellent filtering properties, high visual transparency, and an excellent pop-up function and is manufacturable simply and economically as a single-layer product. It is particularly well-suited for use as a tea bag or a coffee pod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.