Porous membrane producing method for e.g. ultra filtration process, involves applying liquid on surface of liquid film on substrate, and solidifying non volatile component to fixed diaphragm

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes a method for producing porous membranes, particularly by applying a hardenable liquid containing a non-volatile polymer onto a textured substrate surface and then solidifying it to form a stable membrane. A second liquid, often water that does not easily mix with the polymer solution, is used at different processing stages to help structure the membrane. The resulting porous membranes are supported by substrates made from materials like metal, glass, or ceramics.

Use CasesContent extracted from patent full text and abstract with AI.

• Water purification using ultrafiltration systems
• Industrial wastewater treatment
• Medical filtration devices (e.g., for dialysis)
• Food and beverage processing (e.g., for juice or milk filtering)
• Chemical processing and separations
• Laboratory filtration procedures

BenefitsContent extracted from patent full text and abstract with AI.

• Produces highly efficient porous membranes with controlled structure
• Compatible with robust substrate materials like metal, glass, or ceramic
• Flexible processing allows for tailored membrane properties
• Improved stability and durability of the final membrane product
• Can be integrated into various filtration and separation technologies
• Potential for use in critical applications such as medical and drinking water purification

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The method involves applying a hardenable liquid (4) containing a non volatile component (6) i.e. organic polymer or copolymer, on a three-dimensional structured surface of a substrate (3) including elevations and recesses such that the elevations are completely covered with the liquid. Liquid (8) i.e. water, which does not or partially mixable with the liquid (4) is applied on a surface of a liquid film on the substrate at same time, before or after applying the liquid (4). The non volatile component is solidified to a fixed diaphragm (9). The substrate is made of metal, a glass or a ceramic material. An independent claim is also included for a porous membrane comprising a rough porous supporting layer.