Filter structure, filter panel comprising the filter structure and method for manufacturing the filter structure
AssigneeCamfil AB
InventorMikael Forslund
Life of this patent
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Abstract
A pleatable filter structure for use in a filter panel, containing ion exchange particles distributed within a fibrous framework is expanded to contain enough space to allow the ion exchange particles to swell or to be in a swelled state as compared to dry ion exchange particles, without additional expansion of the filter structure. A method of manufacturing the filter structure involves subjecting the filter structure to a moisture treatment in which it is exposed to a humid or water containing environment, whereby the ion exchange particles swell and cause a permanent expansion of the filter structure.
Claims31
A pleatable filter structure for use in a filter panel, comprising:
- ion exchange particles distributed within a fibrous framework of the filter structure, wherein the filter structure is expanded by a moisture treatment which swells the ion exchange particles and causes a permanent expansion of the filter structure, the moisture treatment comprising exposure to a humid or water-containing environment;
- and
- the expanded filter structure contains enough space to allow the ion exchange particles to swell or to be in a swelled state without additional expansion of the filter structure.
A method of manufacturing a filter structure, comprising:
- subjecting the filter structure to a moisture treatment which swells the ion exchange particles and causes a permanent expansion of the filter structure, the expanded filter structure containing enough space to allow ion exchange particles to swell or to be in a swelled state without additional expansion of the filter structure, wherein the moisture treatment comprises exposure to a humid or water-containing environment.
Dependencies are inferred from the claim text.