Refrigerant-transporting hose
View Patent ↗A refrigerant-transporting hose includes a tubular inner layer 1 in contact with a fluorine refrigerant, an intermediate layer 2 formed on an outer periphery surface thereof, and at least one rubber layer 3 and 5 formed on a further outer periphery thereof, and the inner layer 1 is made of a inner layer material including maleic anhydride-modified polypropylene as a main component and the intermediate layer 2 is made of a intermediate layer material including polyamide resin as a main component.
1. A refrigerant-transporting hose, comprising:
a fluorine refrigerant-conducting tubular inner layer;
an intermediate layer formed on an outer periphery of the inner layer; and
at least one rubber layer formed on a further outer periphery of the intermediate layer,
wherein the inner layer is made of an inner layer material including maleic anhydride-modified polypropylene as a main component, and
wherein the intermediate layer is made of an intermediate layer material including polyamide resin as a main component.
2. The refrigerant-transporting hose according to claim 1 , wherein
a modification amount of the maleic anhydride-modified polypropylene is 0.26 to 0.36 weight %.
3. The refrigerant-transporting hose according to claim 1 ,
wherein a melting point of the maleic anhydride-modified polypropylene is 165 to 168° C.
4. The refrigerant-transporting hose according to claim 2 ,
wherein a melting point of the maleic anhydride-modified polypropylene is 165 to 168° C.
5. The refrigerant-transporting hose according to claim 1 , wherein the rubber layer is a butyl rubber layer.
6. The refrigerant-transporting hose according to claim 2 , wherein the rubber layer is a butyl rubber layer.
7. The refrigerant-transporting hose according to claim 3 , wherein the rubber layer is a butyl rubber layer.
8. The refrigerant-transporting hose according to claim 4 , wherein the rubber layer is a butyl rubber layer.
9. The refrigerant-transporting hose according to claim 1 , wherein the rubber layer is an ethylene-propylene rubber layer.
10. The refrigerant-transporting hose according to claim 2 , wherein the rubber layer is an ethylene-propylene rubber layer.
11. The refrigerant-transporting hose according to claim 3 , wherein the rubber layer is an ethylene-propylene rubber layer.
12. The refrigerant-transporting hose according to claim 4 , wherein the rubber layer is an ethylene-propylene rubber layer.
13. The refrigerant-transporting hose according to claim 1 , wherein the inner layer and the intermediate layer are directly bonded together without an adhesive.
14. The refrigerant-transporting hose according to claim 2 , wherein the inner layer and the intermediate layer are directly bonded together without an adhesive.
15. The refrigerant-transporting hose according to claim 3 , wherein the inner layer and the intermediate layer are directly bonded together without an adhesive.
16. The refrigerant-transporting hose according to claim 4 , wherein the inner layer and the intermediate layer are directly bonded together without an adhesive.
17. The refrigerant-transporting hose according to claim 1 , wherein the rubber layer further comprises at least one of a resorcinol compound and a melamine compound.
18. The refrigerant-transporting hose according to claim 2 , wherein the rubber layer further comprises at least one of a resorcinol compound and a melamine compound.
19. The refrigerant-transporting hose according to claim 3 , wherein the rubber layer further comprises at least one of a resorcinol compound and a melamine compound.
20. The refrigerant-transporting hose according to claim 4 , wherein the rubber layer further comprises at least one of a resorcinol compound and a melamine compound.