Pneumatic vehicle tire
A pneumatic vehicle tire is provided. The tire includes a tread, an inner surface lying opposite the tread, a self-sealing sealant and a sound-absorbing open-cell foam ring arranged inside the pneumatic vehicle tire. The foam ring is adhesively attached to the inner surface and adheres to the self-sealing sealant which is applied before the sound-absorbing open-cell foam ring is attached to the inner surface. The self-sealing sealant has, at least immediately after being applied, a tackiness required for an adhesive attachment of the sound-absorbing open-cell foam ring. A closed-cell material ring is arranged between the sound-absorbing foam ring and the self-sealing sealant to prevent a diffusion of the sealant into the open-cell foam ring. The closed-cell material ring effects an airtight condition.
1. A pneumatic vehicle tire comprising:
an inner surface;
a tread;
a self-sealing sealant on said inner surface;
a sound-absorbing open-cell foam ring arranged inside the pneumatic vehicle tire and being adhesively attached to said inner surface opposite from said tread;
said sound-absorbing open-cell foam ring adhering to said self-sealing sealant;
said self-sealing sealant being applied on said inner surface before said sound-absorbing open-cell foam ring is attached to said inner surface;
said self-sealing sealant having, at least immediately after being applied, a tackiness required for an adhesive attachment of said sound-absorbing open-cell foam ring;
a closed-cell material ring arranged between said sound-absorbing foam ring and said self-sealing sealant; and,
said closed-cell material ring lying directly on said self-sealing sealant to provide an airtight seal.
2. The pneumatic vehicle tire of claim 1 , wherein said closed-cell material ring includes at least one of a foam, a cork, an elastomer, or a combination thereof.
3. The pneumatic vehicle tire of claim 1 , further comprising:
an adhesive; and,
said closed-cell material ring and said open-cell foam ring being bonded to one another by said adhesive.
4. The pneumatic vehicle tire of claim 1 , wherein said closed-cell material ring has a maximum radial thickness of ≤50 mm.
5. The pneumatic vehicle tire of claim 1 , wherein said closed-cell material ring has a maximum radial thickness of 20 mm to 40 mm.
6. The pneumatic vehicle tire of claim 1 , wherein said open-cell foam ring has a radial thickness of ≥10 mm.
7. The pneumatic vehicle tire of claim 1 , wherein said open-cell foam ring has a radial thickness of 20 mm to 40 mm.
8. The pneumatic vehicle tire of claim 1 , wherein said self-sealing sealant is a polyurethane gel.
9. The pneumatic vehicle tire of claim 1 , wherein said self-sealing sealant is a viscous mixture based on butyl rubber, a polybutene or is based on silicone.
10. The pneumatic vehicle tire of claim 1 , wherein:
said closed-cell material ring has a first width, a radially outer surface and a radially inner surface;
said open-cell foam ring has a second width and a radially inner surface;
said closed-cell material ring lies with said radially outer surface fully flush on said self-sealing sealant;
said closed-cell material ring lies with said radially inner surface fully flush on said open-cell foam ring; and,
said first width of said closed-cell material ring being equal to said second width of said open-cell foam ring.
11. The pneumatic vehicle tire of claim 1 , wherein:
said closed-cell material ring has a radially inner surface and radially outer surface, wherein said radially outer surface is divided;
said closed-cell material ring lies with said radially inner surface fully flush on said open-cell foam ring;
said open-cell foam ring is supported together with said closed-cell material ring on said self-sealing sealant by two or more supports;
said open-cell foam ring has a width; and,
said closed-cell material ring has a width being equal to said width of said open-cell foam ring.
12. The pneumatic vehicle tire of claim 1 , wherein:
said self-sealing sealant is a sealant ply and has a layer thickness;
said layer thickness of said self-sealing sealant is ≤2 mm in a first region in which said closed-cell material ring lies directly on said self-sealing sealant; and,
said layer thickness of said self-sealing sealant is between 2 mm and 6 mm in a second region in which said closed-cell material ring does not lie directly on said self-sealing sealant.
13. The pneumatic vehicle tire of claim 1 , wherein:
said self-sealing sealant is a sealant ply and has a layer thickness;
said layer thickness of said self-sealing sealant is ≤1 mm in regions in which said closed-cell material ring lies directly on said self-sealing sealant; and,
said layer thickness of said self-sealing sealant is <5 mm in a second region in which said closed-cell material ring does not lie directly on said self-sealing sealant.
14. The pneumatic vehicle tire of claim 11 , wherein said two or more supports are continuously arranged in a circumferential direction of the pneumatic vehicle tire or in a direction at an angle to the circumferential direction of the pneumatic vehicle tire.
15. The pneumatic vehicle tire of claim 11 , wherein said two or more supports are discontinuously arranged in a circumferential direction of the pneumatic vehicle tire or in a direction at an angle to the circumferential direction of the pneumatic vehicle tire.