Membrane cartridge and membrane-cartridge production method
US10328394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2015 |
| Grant date | Jun 25, 2019 |
| Priority date | — |
| Expiry date | Mar 20, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A low-cost membrane cartridge and a low-cost method for producing a membrane cartridge, in which fatigue durability can be increased with a simple structure, are provided by focusing on a bonding position of the filtration membrane onto the filtration plate. The membrane cartridge includes a filtration membrane disposed on both faces of a filtration plate made of a thermoplastic resin, such that a joining portion provided at the periphery of the filtration membrane is joined to the filtration plate. At least an inner edge portion of the joining portion has a downward inclination with respect to the surface of the filtration plate inside of the inner edge portion at an angle in a range of 10 to 45 degrees toward an outer peripheral edge of the filtration membrane. The joining portion is pressed and welded using a heating plate or an ultrasonic horn having such an inclined surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.