Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
  • B60C19/00—Tyre parts or constructions not otherwise provided for
  • B60C19/002—Noise damping elements provided in the tyre structure or attached thereto, e.g. in the tyre interior
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
  • B29C73/16—Auto-repairing or self-sealing arrangements or agents
  • B29C73/163—Sealing compositions or agents, e.g. combined with propellant agents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
  • B29D30/00—Producing pneumatic or solid tyres or parts thereof
  • B29D30/06—Pneumatic tyres or parts thereof (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
  • B29D30/0681—Parts of pneumatic tyres; accessories, auxiliary operations
  • B29D30/0685—Incorporating auto-repairing or self-sealing arrangements or agents on or into tyres
  • B29D2030/0686—Incorporating sealants on or into tyres not otherwise provided for; auxiliary operations therefore, e.g. preparation of the tyre

Definitions

• the invention relates to a pneumatic vehicle tire having an inner surface on the inner surface opposite the tread adhesively attached
• Foam sound absorber wherein the sound absorber adheres to a pre-applied, self-sealing sealant, which has at least immediately after its application, a stickiness required for the adhesion of the sound absorber.
• a pneumatic vehicle tire is known from DE 10 2007 028932 AI.
• the inner absorber is a ring of open-cell foam, which the
• the highly viscous sealant applied to the inside of the tire has two functions: it seals off an undesired puncture of the tire in the area of the tread by causing the viscous tire to be punctured
• sealant in case of injury of the inner layer flows into the site of injury.
• the sealant also serves as an "adhesive" for attaching the sound-absorbing foam ring.
• the flow behavior of the highly viscous sealant may be adversely affected by the full absorption of the inner sealant on the sealant, so that the desired sealing effect occurs late or not at all.
• a reliable seal is particularly difficult due to the adverse effect of its flow behavior sealant.
• “highly viscous” is here a sealant whose viscosity is more than 10 Pa s to understand.
• the invention is based on the object, the sealing of the tire at
• the sound absorber consists of a plurality of individual, mutually unconnected geometric sound absorber bodies that each of the geometric sound absorber body adheres to the sealant and that each of the geometric sound absorber body has a diameter of 1 mm to 50 mm.
• the sound absorber is not a one-piece body revolving over the circumference of the tire, but rather the sound absorber consists of a large number of individual sound absorber bodies, each on the ring-shaped circle on the ring
• the sound absorber body Adhere to the tire inner surface arranged sealant.
• the sound absorber body are single-layer front and behind and next to each other, touching and / or non-contact, arranged on the ring circularly arranged sealing means adhering.
• the surface area of the plurality of sound absorber bodies is usually much larger than the surface of a single sound absorbing ring, thereby improving the sound absorption. Due to the fact that the sound absorber bodies are not glued to the entire surface of the sealant with suitable geometry, but ideally free between the sound absorber bodies
• the diameter of a sound absorber body is measured by the
• the sound absorber bodies are geometrically regular bodies, such as spheres or polyhedra, which preferably have a diameter of 10 mm to 70 mm, preferably of 20 m to 40 mm.
• balls have only a punctiform bearing surface on the sealant, so that the
• Sound absorber body is ideal small. There is a large sealant surface uncovered by the sound absorber. Therefore, the flowability of the sealant is greatly improved compared to a full-surface resting foam ring.
• the sound absorber bodies are geometrically irregular bodies, which preferably have a diameter of 10 mm to 70 mm, preferably of 20 m to 40 mm.
• Schallabsorber Equity have a larger adhesive surface than, for example, a spherical sound absorber body, whereby by selecting the appropriate
• sealants based on polyurethane or sealants which are a viscous mixture based on a butyl rubber, a polybutene or based on silicone are suitable. It is advantageous if the layer thickness of the sealant is between 2 mm and 5 mm, preferably about 3.5 mm. Due to the improved flow behavior of the sealant, reliable sealing of punctures enables the layer thickness of the sealant to be reduced by 30% to 50% compared to the layer thickness of the foam ring resting on the entire surface. This saves on costs and tire weight.
• the sound absorber body within a tire have either the same size or different sizes, for example, to achieve the largest possible projected area coverage.
• Adhere ring-ring-shaped sealant layer Adhere ring-ring-shaped sealant layer.
• FIG. 1 shows a cross section through a vehicle pneumatic tire of the prior art.
• 2 shows a cross section through a fiction, contemporary pneumatic vehicle tire.
• Fig. 1 is a cross section through a passenger car radial tire is shown, which has a profiled tread 1, side walls 2, bead areas 3, bead cores 4 and a multi-layer belt assembly 5 and a carcass 6.
• the tire On its inner surface, the tire with an inner layer 7 of an airtight
• a sealant 8 is applied, which is capable of self-sealing when puncture - damage to the tire.
• the inner absorber 9 is tuned to the tire cavity frequency with regard to its sound-absorbing properties.
• the inner absorber 9 has here, for example, an approximately elongated triangular cross-section, symmetrical with respect to the symmetry axis of the tire, which with its base side adheres to the entire surface of the sealing means 8.
• Interior Absorber 9 is an open cell foam, as it is best suited to absorb sound.
• Suitable sealants are, for example, polyurethane gels or viscous mixtures based on butyl rubbers, polybutenes or silicone, the mixtures containing the usual further constituents, such as
• Plasticizer oils may contain.
• the sealant is, for example by spraying, introduced such that it at least the tread the first
• Fig. 2 shows a cross section through a vehicle pneumatic tire according to the invention for passenger cars of the dimension 205/55 R16.
• the vehicle tire of Fig. 2 differs from the vehicle tire of Fig. 1 in that the
• Sound absorber 9 is composed of a plurality of individual, mutually not connected, touching and / or non-contact geometric sound absorber bodies 10. There are so many sound absorber body 10 arranged that - in projection on the sound absorber body - the tread
• Sound absorber bodies 10 is covered.
• the left-hand cross-section half shows sound absorber body 10 in spherical form.
• Sound absorber body 10 is the same size and has a diameter 11 of 10 mm to 70 mm.
• the layer thickness 12 of the sealant 8 is very small and is about 3.5 mm.
• Various possible geometries of the sound absorber body 10 are shown by way of example on the right half of the drawing, with the sound absorber 9 preferably consisting of sound absorber bodies 10 of the same geometry.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Tires In General (AREA)
• Tyre Moulding (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

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Family Applications (1)

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Citations (4)

Family Cites Families (6)

• 2015
  • 2015-07-03 DE DE102015212484.3A patent/DE102015212484A1/de not_active Withdrawn
• 2016
  • 2016-03-01 EP EP16706886.5A patent/EP3317127B1/de active Active
  • 2016-03-01 JP JP2017562593A patent/JP2018520930A/ja active Pending
  • 2016-03-01 WO PCT/EP2016/054261 patent/WO2017005379A1/de not_active Ceased
• 2018
  • 2018-01-03 US US15/861,453 patent/US20180126804A1/en not_active Abandoned

Patent Citations (4)

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