Applicator for flowable substances
US6336763B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Jan 8, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/761
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The dispenser has a mesh fabric applicator surface which provides for a uniform flow of the semisolid substance to be dispensed, but does not have the problem of post-extrusion flow. That is, there is not required such an overpressure to start the flow of the substance, with this overpressure remaining after use of the applicator and causing the semisolid substance to extrude through the applicator surface after use. The mesh fabric surface can be a woven or nonwoven fabric, in one or more plies. Nonwoven fabrics include apertured extruded films. The mesh fabric is heat bonded to the upper frame of the applicator and can have an underlying support. The mesh fabric can yield to follow the contours of a skin surface, but will not be permanently distorted. There is provided a surface for a dispenser for a viscous semisolid substance where there is improved shear of the semisolid substance and a more uniform application. Also, due to the more uniform cross-sectional dimension of the pores, there is obviated the problem of post-extrusion flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.