Composite hydroentangling nozzle strip and method for producing nonwoven fabrics therewith
US7237308B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 10, 2004 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Feb 22, 2025 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD04H18/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A composite nozzle strip for hydroentangling of a fibrous mass is provided to lower nozzle erosion potential and increase operational efficiency. The composite nozzle strip comprises a substrate comprising a material of a first hardness having at least one aperture and at least one orifice element comprising a material of a second hardness greater than the first hardness and further defining an aperture of a second diameter less than the first diameter. The at least one orifice element is affixed to the substrate so that the aperture in the orifice element is aligned with the at least one aperture in the substrate for creation of a constricted water jet when subjected to pressurized water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.