# US 11,993,871 B2 · Limited conduction heat retaining materials > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,993,871 B2 - Document ID: US11993871B2 - Status: Granted - Kind: B2 - Application number: 17/503,194 - Filed: 2021-10-15 - Published: 2022-02-03 - Granted: 2024-05-28 - Earliest claimed: 2017-10-16 - Assignees: Columbia Sportswear North America, Inc. - Applicants: Michael “Woody” Blackford; Jeffrey Thomas Mergy; Rebecca A. Durr; Haskell W. Beckham - Inventors: Michael “Woody” Blackford; Jeffrey Thomas Mergy; Rebecca A. Durr; Haskell W. Beckham - Web page: https://patentgrep.com/patent/US11993871B2 ## CPC - B32B 5/18: characterised by features of a layer {of} foamed material - D03D 1/0035: {Protective fabrics} - B32B 3/085: {spaced apart pieces on the surface of a layer} - B32B 3/16: secured to a flexible backing - 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 5/026: {Knitted fabric} - B32B 5/245: {another layer next to it being a foam layer} - C08L 101/00: Compositions of unspecified macromolecular compounds - D03D 15/513: heat-resistant or fireproof - B32B 2266/0242: Acrylic resin - B32B 2266/025: Polyolefin - B32B 2266/0278: Polyurethane - B32B 2307/304: Insulating - B32B 2307/724: Permeability to gases, adsorption - B32B 2307/732: Dimensional properties - B32B 2437/00: Clothing - C08L 2201/08: Stabilised against heat, light or radiation or oxydation - C08L 2203/14: used for foams - D10B 2321/02: polyolefins - D10B 2331/06: polyethers - D10B 2331/10: polyurethanes - D10B 2501/04: Outerwear; Protective garments - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - D03D: WOVEN FABRICS; METHODS OF WEAVING; LOOMS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) - D10B: INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES ## Abstract Embodiments relate to an article of clothing that includes a base material with a moisture vapor transfer rate (MVTR) of at least 2000 g/m2/24 h (JIS 1099 A1). The article of clothing may further include a foam-based spacer material coupled to the first side of the base material. The foam-based spacer material may be positioned between the base material and a wearer of the article of clothing when the article of clothing is worn. The foam-based spacer material may be an array of discrete elements coupled with the base material. Other embodiments may be described and/or claimed. ## Claims ### Claim 1 An insulating material comprising: a base material having a moisture vapor transfer rate (MVTR) of at least 2000 g/m2/24 h (JIS 1099 A1); a plurality of heat-reflecting elements coupled to a first side of the base material, each heat-reflecting element having a heat-reflecting surface and being positioned to reflect heat towards a wearer of the insulating material; and a foam-based spacer material coupled to the first side of the base material, the foam-based spacer material defining an innermost surface of the insulating material and configured to face the wearer, wherein at least one of the plurality of heat-reflecting elements is at least partially between the foam-based spacer material and the base material. ### Claim 2 (depends on 1) The insulating material of claim 1, wherein the foam-based spacer material includes polyacrylate, polyurethane, or polyolefin. ### Claim 3 (depends on 2) The insulating material of claim 2, wherein the foam-based spacer material further includes a crosslinking agent. ### Claim 4 (depends on 1) The insulating material of claim 1, wherein the foam-based spacer material has a thickness between approximately 0.05 millimeters (mm) and approximately 0.15 mm. ### Claim 5 (depends on 1) The insulating material of claim 1, wherein the base material has a top surface and a bottom surface and a rippled profile present along both the top and bottom surfaces. ### Claim 6 (depends on 5) The insulating material of claim 5, wherein a peak of the rippled profile of the base material is adjacent to a portion of the base material that is coupled with the foam-based spacer material. ### Claim 7 (depends on 1) The insulating material of claim 1, wherein the foam-based spacer material has a line-shaped pattern, a cross-shaped pattern, a circle-shaped pattern, or a hexagonal-shaped pattern. ### Claim 8 (depends on 1) The insulating material of claim 1, wherein the foam-based spacer material is an array of discrete elements, wherein respective ones of the elements have a hexagonal pattern. ### Claim 9 (depends on 1) The insulating material of claim 1, wherein the insulating material is an element of an article of clothing. ### Claim 10 (depends on 1) The insulating material of claim 1, further comprising a series of cavities formed along the top and bottom surfaces of the base material resulting from the rippled profile. ### Claim 11 (depends on 1) The insulating material of claim 1, wherein the foam-based spacer material has a thickness of approximately 6 millimeters (mm). ### Claim 12 An article of clothing comprising: a base material having a moisture vapor transfer rate (MVTR) of at least 2000 g/m2/24 h (JIS 1099 A1); and a foam-based spacer material coupled to the first side of the base material, the foam-based spacer material defining an innermost surface of the article of clothing and configured to face a wearer of the article of clothing when the article of clothing is worn, wherein the foam-based spacer material is positioned between the base material and the wearer of the article of clothing when the article of clothing is worn; a plurality of heat-reflecting elements, wherein at least one of the plurality of heat-reflecting elements is at least partially between the foam-based spacer material and the base material, wherein the foam-based spacer material is an array of discrete elements coupled with the base material and wherein the foam-based spacer material comprises a closed-cell foam to enhance heat-retention of the article of clothing. ### Claim 13 (depends on 12) The article of clothing of claim 12, wherein the foam-based spacer material includes polyacrylate, polyurethane, or polyolefin. ### Claim 14 (depends on 12) The article of clothing of claim 12, wherein the foam-based spacer material further includes a crosslinking agent. ### Claim 15 (depends on 12) The article of clothing of claim 12, wherein the foam-based spacer material has a thickness of approximately 0.1 millimeters (mm). ### Claim 16 (depends on 12) The article of clothing of claim 12, wherein the base material has a top surface and a bottom surface and a rippled profile present along both the top and bottom surfaces. ### Claim 17 (depends on 12) The article of clothing of claim 12, wherein a discrete element of the plurality of discrete elements has a line-shaped pattern, a cross-shaped pattern, a circle-shaped pattern, or a hexagonal-shaped pattern. ### Claim 18 (depends on 12) The article of clothing of claim 12, further comprising a series of cavities formed along the top and bottom surfaces of the base material resulting from the rippled profile. ### Claim 19 (depends on 12) The article of clothing of claim 12, wherein the foam-based spacer material has a thickness of approximately 6 millimeters (mm).