# US 10,843,240 B2 · Multifunctional storage container for perishable products and solid waste > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,843,240 B2 - Document ID: US10843240B2 - Status: Granted - Kind: B2 - Application number: 15/905,700 - Filed: 2018-02-26 - Published: 2018-08-30 - Granted: 2020-11-24 - Earliest claimed: 2017-02-27 - Assignees: Materials Modification, Inc. - Applicants: Materials Modification Inc. - Inventors: Krishnaswamy Kasthuri Rangan; Tirumalai Srinivas Sudarshan - Web page: https://patentgrep.com/patent/US10843240B2 ## CPC - B09B 3/40: involving thermal treatment, e.g. evaporation (processes using mineral binders involving a melting or softening step B09B3/29; involving radiation B09B3/50) - A61L 2/04: Heat (radiation A61L2/08) - A61L 2/18: Liquid substances - A61L 11/00: Methods specially adapted for refuse {(disintegrating medical waste B02C19/0075; disposal of medical waste B09B3/00)} - B09B 3/20: Agglomeration, binding or encapsulation of solid waste - B09B 3/32: Compressing or compacting - B65D 33/00: Details of, or accessories for, sacks or bags - B65D 81/18: providing specific environment for contents, e.g. temperature above or below ambient (with thermal insulation B65D81/38) - B65D 81/28: Applications of food preservatives, fungicides, pesticides or animal repellants - B65D 81/34: for packaging foodstuffs {or other articles} intended to be cooked or heated within the package - B65F 1/0006: {Flexible refuse receptables, e.g. bags, sacks} - B65F 7/00: Cleaning or disinfecting devices combined with refuse receptacles or refuse vehicles (such devices per se A61L, B08B) - B09B: DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR - A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K) - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - B65F: GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE (disinfecting refuse A61L; refuse disintegrators B02C; sorting refuse B03B; B07B; handcarts for transporting refuse receptacles B62B; sack holders B65B67/00; converting refuse into fertilisers C05F; converting refuse into solid fuels C10L; sewers, cesspools E03F; arrangements in buildings for the disposal of refuse E04F17/10; refuse-consuming furnaces F23G; {for surgical articles A61B50/36}) ## Abstract Disclosure of a container to store solid and liquid wastes and perishable goods and protect them from microbial damage. The storage container is also amenable to selectively remove water vapor from inside the bag without damaging the container. ## Claims ### Claim 1 A flexible water vapor permeable, antimicrobial storage bag comprising: an outer multifunctional layer and a porous inner support layer, wherein the outer multifunctional layer comprises a hydrophilic polymer and an antimicrobial agent, wherein the outer multifunctional layer is selected from the group consisting of a coating, and, a sheet, wherein the hydrophilic polymer is selected from the group consisting of polyvinyl alcohol and polyvinyl pyrrolidone, wherein the antimicrobial is selected from the group consisting of silver doped copper oxide, magnesium hydroxide, copper-doped magnesium hydroxide, silver doped magnesium hydroxide, magnesium oxide, copper doped magnesium oxide, silver doped magnesium oxide, titanium dioxide nanotubes, silver and copper ion exchanged titanium dioxide nanotubes, wherein the porous inner support layer comprises a porous polymer sheet selected from the group consisting of polypropylene, nylon, polyester, polyurethane, polyimide, polytetrafluoroethylene, and, polyetherimide, wherein the hydrophilic polymer behaves as an adhesive at a temperature higher than about 120 degrees C. and fills up and closes pores in the porous inner support layer, wherein inserting a waste material into the flexible, water vapor permeable, antimicrobial storage bag, then sealing the storage bag to encapsulate the waste material, applying vacuum and heating upto 120 degrees centigrade allows recovery of water vapor, wherein heating to higher than 120 degrees centigrade configures the flexible, water vapor permeable, antimicrobial storage bag to a substantially water vapor impermeable, antimicrobial product, wherein the flexible, water vapor permeable, antimicrobial storage bag has an opening to receive a waste material, wherein the substantially water vapor impermeable, antimicrobial product is pressure compressible into a sealed disc, wherein the flexible, water vapor permeable, antimicrobial storage bag is impermeable to liquid water at room temperature. ### Claim 2 A method of providing water vapor recovery, water vapor impermeability and antimicrobial storage of waste material within a storage bag, the method comprising: 1) preparing a flexible water vapor permeable antimicrobial storage bag; 2) inserting a waste material; 3) sealing, applying vacuum and heating the product of step 2) upto 120 degrees centigrade to recover water vapor, and, 4) heating the product of step 3) to higher than 120 degrees centigrade to create a substantially water vapor impermeable antimicrobial heat treated product, wherein heating extracts out water vapor and makes the storage bag substantially water impermeable, wherein step 1) comprises coating an outer multifunctional layer onto a porous inner support layer to obtain a multilayer sheet, wherein the outer multifunctional layer comprises a hydrophilic polymer and an antimicrobial agent, wherein the hydrophilic polymer selected from the group consisting of polyvinyl alcohol and polyvinyl pyrrolidone, wherein the antimicrobial is selected from the group consisting of silver doped copper oxide, magnesium hydroxide, copper-doped magnesium hydroxide, silver doped magnesium hydroxide, magnesium oxide, copper doped magnesium oxide, silver doped magnesium oxide, titanium dioxide nanotubes, silver and copper ion exchanged titanium dioxide nanotubes, wherein the porous inner support layer comprises a porous polymer sheet selected from the group consisting of polypropylene, nylon, polyester, polyurethane, polyimide, polytetrafluoroethylene, and, polyetherimide, wherein the hydrophilic polymer behaves as an adhesive at a temperature higher than about 120 degrees C. and fills up and closes pores in the porous inner support layer, wherein the water vapor permeable, antimicrobial storage bag is flexible and comprises an open section to receive waste material. ### Claim 3 (depends on 2) The method of claim 2, further comprising: 5) compressing the product of step 4) to obtain a compressed, water impermeable, antimicrobial product encapsulating the waste material. ### Claim 4 A method of providing water vapor recovery, water vapor impermeability and antimicrobial storage of waste material within a storage bag, the method comprising: 1) preparing a flexible water vapor permeable antimicrobial storage bag; 2) inserting a waste material; 3) sealing, applying vacuum and heating the product of step 2) upto 120 degrees centigrade to recover water vapor, and, 4) heating the product of step 3) to higher than 120 degrees centigrade to create a substantially water vapor impermeable antimicrobial heat treated storage bag, wherein heating extracts out water vapor and makes the storage bag water impermeable, wherein step 1) comprises laminating a porous inner support layer with an outer multifunctional sheet to obtain a multilayer sheet, wherein the outer multifunctional sheet comprises a hydrophilic polymer and an antimicrobial agent, wherein the hydrophilic polymer selected from the group consisting of polyvinyl alcohol and polyvinyl pyrrolidone, wherein the antimicrobial is selected from the group consisting of silver doped copper oxide, magnesium hydroxide, copper-doped magnesium hydroxide, silver doped magnesium hydroxide, magnesium oxide, copper doped magnesium oxide, silver doped magnesium oxide, titanium dioxide nanotubes, silver and copper ion exchanged titanium dioxide nanotubes, wherein the porous inner support layer of step b) comprises a porous polymer sheet selected from the group consisting of polypropylene, nylon, polyester, polyurethane, polyimide, polytetrafluoroethylene, and, polyetherimide, wherein the hydrophilic polymer behaves as an adhesive at a temperature higher than about 120 degrees C. and fills up and closes pores in the porous inner support layer, wherein the water vapor permeable, antimicrobial storage bag is flexible and comprises an open section to receive waste material. ### Claim 5 (depends on 4) The method of claim 4, further comprising: 5) compressing the product of step 4) to obtain a compressed, water impermeable, antimicrobial product encapsulating the waste material.