Method for manufacturing particulate molding
A controlled fluidization process with specific shear stress and diameter ratios efficiently removes fine particles from particulate molded bodies, addressing the inefficiencies of existing methods and ensuring the integrity of the molded bodies for applications like blood purifiers.
JP2025136050APending Publication Date: 2025-09-19ASAHI KASEI MEDICAL CO LTD
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Patent Information
- Application Number
- JP2024034220
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-09-19
Smart Images
Figure 2025136050000001_ABST
Abstract
To provide a method for manufacturing a particulate molding in which fine particles can be removed efficiently from a particulate molding while causing less damage to the particulate molding.SOLUTION: A method for manufacturing a particulate molding includes: a step of allowing a mixture of particulate molding and liquid to flow in a fluid space to remove at least a part of fine particles from the particulate molding; and a step of recovering the particulate molding from which at least a part of the fine particles has been removed. The maximum shear stress of the liquid in the fluid is 0.001 Pa or more and 1.5 Pa or less, and when a length (Dl) occupied by the liquid out of the minimum diameter (Dmin) of the fluid space is defined by the following formula: Dl=[the volume of the liquid / (the volume of the particulate molding containing the fine particles + the volume of the liquid)]×Dmin, the ratio (Dl / Dh) of Dl for the harmonic mean diameter (Dh) of the particulate molding is 3.0 or more and 150 or less.SELECTED DRAWING: Figure 1
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