# US 4,391,667 A · Method of preparing cells to enable one fluid to be affected by another fluid > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 4,391,667 A - Document ID: US4391667A - Status: Granted - Kind: A - Application number: 06/256,807 - Filed: 1981-04-23 - Granted: 1983-07-05 - Earliest claimed: 1980-04-25 - Assignees: Aktiebolaget Carl Munters - Inventors: Hakan Vangbo; Bertil Lundin; Oivind Moklint - Web page: https://patentgrep.com/patent/US4391667A ## CPC - B32B 5/30: one layer {being formed of particles, e.g. chips,} granules, powder - B01D 53/261: {by adsorption} - B32B 3/28: characterised by a layer comprising a deformed thin sheet {, i.e. the layer having its entire thickness deformed out of the plane}, e.g. corrugated, crumpled (B32B29/08 takes precedence) - B32B 5/16: characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)} - B32B 29/02: next to a fibrous or filamentary layer - B32B 29/08: Corrugated paper or cardboard - F28D 19/042: {Rotors; Assemblies of heat absorbing masses} - F28F 21/00: Constructions of heat-exchange apparatus characterised by the selection of particular materials {(coatings for modifying heat-transfer F28F13/18; coatings for preventing the formation of deposits or corrosion F28F19/02)} - B32B 2305/08: Reinforcements - B32B 2317/10: Natural fibres, e.g. wool, cotton - B32B 2317/127: Corrugated cardboard - Y10T 156/1016: Transverse corrugating - Y10T 156/1025: to form undulated to corrugated sheet and securing to base with parts of shaped areas out of contact - Y10T 428/234: including elements cooperating to form cells - Y10T 428/24694: Parallel corrugations - Y10T 428/249956: Void-containing component is inorganic - Y10T 428/249986: Void-containing component contains also a solid fiber or solid particle - Y10T 428/30: Self-sustaining carbon mass or layer with impregnant or other layer - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A method of preparing cells for the purpose of enabling one fluid to be affected by another fluid via thin membranes of inorganic artificial fibres, which membranes are corrugated all over or in part and caused to bear upon each other along discrete lines of contact so as to form through passages or compartments for the fluids. The cell is constructed of membranes of artificial fibres which have a filament diameter of at least 3 and at most 20 micrometers and are elastic. The fibres are loosely matted so that when the spaces between the fibres in the assembled cell have been filled with a fine powder which is bound with an inorganic binder the powder forms a load-bearing layer which is cohesive throughout the surface extension of the membrane and through its cross-section and in which the fibres act as reinforcement. ## Claims ### Claim 1 A method of manufacturing a cell of the type having a plurality of passages therethrough and further of the type in which one or more fluids may selectively be passed through the passages, said method comprising the steps of: forming a plurality of thin membranes from mineral fibres, said fibres having a filament diameter in the range of about 3 to 20 micrometers and being loosely felted together, corrugating at least some of the membranes, adjacent membranes being bonded to each other by a bonding agent whereby the corrugations form with adjacent membranes the passages of the cell, adding a fine powder filler to the formed membranes in an amount which by weight exceeds the weight of said formed membranes whereby the mineral fibres are embedded with the filler to form therewith a composite member and to provide said membranes with an increased active surface area, and impregnating the formed powder filled member with an inorganic binder whereby the bound powder filler forms a load-bearing layer which is cohesive throughout the increased surface area of said membranes and through the cross-section thereof and whereby said fibres serve as reinforcement for said composite reinforced member. ### Claim 2 (depends on 1) A method as defined in claim 1 wherein the membranes are alternately non-corrugated and corrugated sheets. ### Claim 3 (depends on 2) A method as defined in claim 2 wherein the non-corrugated sheets are thicker than the corrugated sheets. ### Claim 4 (depends on 1) A method according to claim 1 wherein the membranes are paper like in structure and the weight thereof is in the range of about 15 to 60 g/m.sup.2. ### Claim 5 (depends on 1) A method according to claim 1 wherein the membranes are paper like in structure and the weight thereof is in the range of about 20 to 40 g/m.sup.2. ### Claim 6 (depends on 4) A method according to claim 4 wherein the membranes have a thickness in the range of about 0.1 to 0.25 mm. ### Claim 7 (depends on 4) A method according to claim 4 wherein the powder filler is hygroscopic. ### Claim 8 (depends on 4) A method according to claim 4 wherein the inorganic binder is a compound containing silicon. ### Claim 9 (depends on 4) A method according to claim 4 wherein the weight of the filler is at least equal to the weight of the fibres. ### Claim 10 (depends on 4) A method according to claim 4 wherein the weight of the filler is greater than the weight of the fibres by at least 20% to 50% of the weight of the fibres. ### Claim 11 A method of manufacturing a cell of the type having a plurality of passages therethrough and further of the type in which one or more fluids may selectively be passed therethrough, said method comprising the steps of: forming a plurality of thin membranes from glass fibres, said fibres having a filament diameter in the range of about 3 to 20 micrometers and being loosely felted together, corrugating alternate membranes, adjacent membranes being bonded to each other by a bonding agent whereby the corrugations form with the adjacent membranes the passages of the cell, coiling the bonded corrugated and non-corrugated membranes into a cylindrical roll of desired diameter and length, adding a fine hygroscopic powder filler to the glass fibre membranes whereby the fibres are embedded with the filler to form therewith a composite member and to provide said membranes with an increased active surface area, said filler being chosen from the group consisting primarily of molecular sieves, silica gel, aluminum hydroxide or mixtures thereof, and impregnating the formed powder filled member with an inorganic binder containing silicon whereby the bound powder filler forms a load-bearing layer which is cohesive throughout the increased surface area of said membranes and through the cross-section thereof and whereby said fibres serve as reinforcement for said composite reinforced member. ### Claim 12 (depends on 1) A method according to claim 1 wherein the powder filler includes activated carbon. ### Claim 13 (depends on 1) A method according to claim 1 wherein the cell is used as a catalyst carrier.