US 12,203,569 B2
Hose, specifically for refrigerant applications
Alexandra Brandt, Gotha (DE); and Michael Sont, Horneburg (DE)
Assigned to ContiTech Techno-Chemie GmbH, Karben (DE)
Appl. No. 17/754,642
Filed by ContiTech MGW GmbH, Hann. Münden (DE)
PCT Filed Sep. 4, 2020, PCT No. PCT/EP2020/074821
§ 371(c)(1), (2) Date Apr. 7, 2022,
PCT Pub. No. WO2021/073804, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 10 2019 215 713.0 (DE), filed on Oct. 14, 2019.
Prior Publication US 2024/0102585 A1, Mar. 28, 2024
Int. Cl. F16L 11/08 (2006.01); B29C 48/09 (2019.01); B29C 48/154 (2019.01); B29C 48/21 (2019.01); F25B 41/40 (2021.01); B29K 21/00 (2006.01); B29K 67/00 (2006.01); B29K 77/00 (2006.01); B29K 83/00 (2006.01); B29K 105/06 (2006.01); B29K 305/00 (2006.01); B29L 23/00 (2006.01); F16L 11/04 (2006.01)
CPC F16L 11/08 (2013.01) [B29C 48/09 (2019.02); B29C 48/154 (2019.02); B29C 48/21 (2019.02); F16L 11/082 (2013.01); F16L 11/086 (2013.01); F25B 41/40 (2021.01); B29K 2021/003 (2013.01); B29K 2067/00 (2013.01); B29K 2077/00 (2013.01); B29K 2083/00 (2013.01); B29K 2105/06 (2013.01); B29K 2305/00 (2013.01); B29L 2023/005 (2013.01); F16L 2011/047 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A pressure carrier hose for refrigerant lines comprising at least the following plies in the following order:
an innermost layer (A4) which is based on a thermoplastic material or a thermoplastic elastomer material;
an internal layer (A5) which is applied to the innermost layer (A4) and which is based on a second elastomer material;
at least one reinforcing element ply (B, B1, B2), wherein the reinforcing element is arranged at an angle smaller than a neutral angle of 54.7°;
an optional external layer (C) which is based on a polymer material;
wherein the thermoplastic material or the thermoplastic elastomer material of the innermost layer (A4) comprises a bond-modified thermoplastic copolyester elastomer (TPC); and is selected from at least one member of the group consisting of thermoplastic elastomer (TPE), polyamide, fluoropolymer, silicone polymer and a combination thereof; and
wherein the polyamide is an elastomer-modified polyamide.