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
  • B60C19/08—Electric-charge-dissipating arrangements
  • B60C19/084—Electric-charge-dissipating arrangements using conductive carcasses
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
  • D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
• • 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)
  • B29D30/08—Building tyres
  • B29D30/20—Building tyres by the flat-tyre method, i.e. building on cylindrical drums
  • B29D30/30—Applying the layers; Guiding or stretching the layers during application
  • B29D2030/3064—Details, accessories and auxiliary operations not otherwise provided for
  • B29D2030/3071—Venting air inclusions during the layer applications, e.g. by creating grooves, channels, passages or holes in the band-like tyre component to be applied
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
  • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
  • B29K2995/0005—Conductive
• • 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
  • B60C2019/008—Venting means, e.g. for expelling entrapped air
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K3/00—Use of inorganic substances as compounding ingredients
  • C08K3/02—Elements
  • C08K3/04—Carbon
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
  • C08K5/0075—Antistatics
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K9/00—Use of pretreated ingredients
  • C08K9/04—Ingredients treated with organic substances

Definitions

• the invention relates to a radial type vehicle pneumatic tire with a carcass and with components adjacent to the carcass, wherein on at least one of the two
• the invention also relates to a method for producing an electrically conductive coating for the thread-like elements.
• Textile calender made by the liner is coated with a mixture layer of rubber.
• the component carcass, after its manufacture in the textile calender becomes on the surface of the tire
• Electrically conductive means that the tire has an electrical resistance of at most 1 x 10 8 ohms. Now the development is going to reduce the rolling resistance of the tire.
• One approach to reducing rolling resistance is to use low rolling resistance
• the degree of filling with other reinforcing Fillers are widely reduced.
• this can cause the total fill level to become very low.
• dispersion of the high surface area conductivity blacks is no longer satisfactorily possible with the disadvantages such as too low strength or abrasion resistance.
• such a measure based on conductive carbon blacks is expensive.
• the invention has for its object to provide a low-cost, high quality pneumatic vehicle tire, which has improved electrical conductivity with simple measures.
• the object is achieved according to the preamble and the characterizing features of claim 1, characterized in that at least one of these thread-like, preferably luftabflowden elements has a coating which is electrically conductive, so that the filamentary, preferably luftabracede element and the coating together an electrically conductive, form thread-like element and that the electrically conductive thread-like element has an electrical resistance of ⁇ 1 x 10 7 ohm / cm.
• the electrical conductivity of the vehicle pneumatic tire can be improved by the simple measure of applying an electrically conductive coating around at least one thread-like, preferably air-discharging element (preferably the so-called air discharge thread).
• the thread-like element as such is not changed in its physical properties, but merely has a coating which is electrically conductive.
• a coating of thread-like elements preferably of
• the thread-like element may be an air-removing thread or other, non-air-discharging, thread-like element, which is arranged in exchange or in addition on the surface of the carcass. It is ensured that the discharge of the electrostatic charge from the rim over the bead on the electrically conductive elements to the electrically conductive head area is improved, even if none of the side region of the tire bridging
• Rubber mixtures has sufficient electrical conductivity.
• the pneumatic vehicle tire is of high manufacturing quality because the air trapped between the components during tire building is still reliably dissipatable by the remaining air-exhaust filaments.
• the electrical conductivity of the pneumatic vehicle tire is improved. There is no complicated constructive action on the tire, such as the laying of additional, electrically conductive rubber tires.
• coating means an envelope, coating or film around the filamentary element.
• thread-like element means a textile thread, yarn or cord as such, preferably an air release thread, without electrically conductive
• electrically conductive thread-like element means the thread-like element together with its electrically conductive coating.
• head area means the components tread, belt and belt bandage of the tire and those intermediate layers which are arranged between these components.
• the thread-like electrically conductive element can be arranged on the outer surface or on the inner surface or both on the outer surface and on the inner surface of the carcass, also alternating on both surfaces.
• Outer surface means the surface of the carcass facing the sidewall, while “inner surface” means that surface of the carcass facing the inner layer. In an advantageous embodiment of the invention is to ensure or
• Improved electrical conductivity provided that between 1 and 20, preferably between 2 and 6 electrically conductive thread-like elements on the / the surface / s of the carcass, preferably regularly distributed over the carcass width, are also arranged alternately on the outer and inner surface.
• the electrically conductive, thread-like element in the unvulcanized tire has an extensibility of 1.5% to 50%, preferably from 5% to 25%.
• the electrically conductive thread-like element thus allows sufficient elongation during the
• the thread-like element consists of a material which is not electrically conductive, ie> 1 x 10 7 ohms.
• the diameter of the thread-like element is between 0.01 and 1.5 mm, preferably between 0.05 and 0.5 mm and thus advantageously does not differ from the dimension of the commonly used air discharge threads and in their physical properties are the same.
• the electrically conductive, thread-like element (11) has a titer ⁇ 3000 dtex, preferably ⁇ 500 dtex, and thus advantageously does not have the dimension of the usual
• the electrically conductive coating is an adhesion promoter, preferably an RFL-dip, the electrically conductive particles, preferably carbon black with a specific surface> 50 m 2 / g, such as type N339 carbon black, particularly preferably carbon black having a specific surface area> 100 m 2 / g.
• the electrically conductive particles preferably carbon black with a specific surface> 50 m 2 / g, such as type N339 carbon black, particularly preferably carbon black having a specific surface area> 100 m 2 / g.
• the electrically conductive and adhesion-promoting coating of the thread-like element is obtained by the customary so-called "dip process" of the thread-like element, in which this adhesion promoter liquid comprising dispersed, electrically conductive particles is drawn inexpensive and efficient.
• RTL resorcinol-formaldehyde latex
• adheresion promoter is understood to mean the adhesion-promoting coating applied to the reinforcement or to its components.
• the non-conductive materials of the air-releasing thread-like elements may be, for example, polyester, polyamide, cotton or hybrids of the aforementioned
• the air-removing thread-like element may consist of continuous filaments, of textured filaments or of staple fibers.
• the coating in relation to the bare filamentary element is between 10 and 90% by weight, preferably between 10 and 50% by weight, more preferably between 15 and 35% by weight of the filamentary element [DPU (dip pick-up)].
• a DPU between 15 and 35% by weight ensures sufficient electrical conductivity with a comparatively thin and therefore cost-efficient coating that can be applied in a dip process.
• the pneumatic vehicle tire has a head region and bead regions made of electrically conductive rubber mixtures, while the rubber mixture (s) of the carcass and / or the side wall region and / or the inner layer are insufficiently electrically conductive.
• insufficiently electrically conductive rubber compounds are meant mixtures with which the tire has an electrical electrical resistance of> 1 x 10 8 ohms.
• an aqueous dispersion A of carbon black which comprises 5 to 25% by weight of carbon black, preferably 6 to 15% by weight of carbon black, particularly preferably 7 to 10% by weight of carbon black;
• aqueous dispersion A in a dispersion B which is an RFL-dip.
• a carbon black content of 15 to 50% by weight preferably a carbon black content of 20 to 40% by weight, is ensured in order to obtain the desired conductivity.
• the dispersions A and B are mixed in a volume ratio of between 50:50 and 70:30, preferably between 50:50 and 60:40.
• a conductive dip can also be a carbon black dip without RFL, consisting
• coated air discharge lines made of PET of construction 235 dtex x 1.
• FIG. 2 shows a cross section through an electrically conductive, thread-like element.
• FIG. 1 shows a partial radial section through a passenger car pneumatic tire.
• the vehicle pneumatic tire 1 consisting of rubber mixtures has a radial carcass 4 extending from bead region 2 to bead region 3, which consists of a rubber-embedded insert made of reinforcements and is guided around tensile-strength bead cores 5 from axially inside to axially outside in a carcass bump 8.
• the vehicle pneumatic tire 1 also has a tread 6 and the carcass 4
• Carcass 4 and the tread belt 7 is arranged.
• the inner layer 9 adjoins the inner surface of the carcass 4, while the side wall 10 to the outer
• the air discharge threads 11 serve to trap the air trapped during tire building between the carcass 4 and the adjacent innerliner and / or components
• the air discharge threads 11 are at a distance of 25 to 40 mm - in
• the air discharge threads 11 span the full carcass ply width. Between 2 and 6 pieces of the air discharge threads 11 of the tire are made electrically conductive as electrically conductive thread-like elements 12, while the remaining air discharge threads 11 are designed as known. These electrically conductive elements 12 are regularly distributed over the circumference of the tire on the carcass 4.
• the electrically conductive thread-like element 12 is a
• Air removal thread 11 with an electrically conductive coating 13 The
• the coating is in relation to the bare thread-like element 11 between 20 to 40% by weight of the thread-like element.
• the electrically conductive coating is an RFL-dip (resorcinol-formaldehyde-latex-dip) having carbon blacks with a specific surface area> 50 m 2 / g, which in the dried state has a carbon black content of 15 to 50% by weight, preferably a carbon black content of 20 to 40% by weight.
• This so-called soot-containing RFL dip ensures the electrical conductivity and at the same time allows a good bond to rubber and a good adhesion of the carbon black to the thread-like element.
• Air discharge threads 11 are arranged over the entire axial width of the carcass 4.
• Coated air discharge thread (electrically conductive, thread-like

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Tires In General (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Paints Or Removers (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=44140830

Family Applications (1)

Country Status (8)

Cited By (6)

Families Citing this family (31)

Citations (4)

Family Cites Families (13)

• 2010
  • 2010-06-18 DE DE102010017444A patent/DE102010017444A1/de not_active Withdrawn
• 2011
  • 2011-05-02 BR BR112012032367A patent/BR112012032367A8/pt not_active Application Discontinuation
  • 2011-05-02 ES ES11717618.0T patent/ES2534917T3/es active Active
  • 2011-05-02 US US13/704,801 patent/US9815339B2/en active Active
  • 2011-05-02 CN CN201180030186.XA patent/CN102947109B/zh active Active
  • 2011-05-02 EP EP11717618.0A patent/EP2582531B1/de active Active
  • 2011-05-02 WO PCT/EP2011/056918 patent/WO2011157473A1/de not_active Ceased
  • 2011-05-02 JP JP2013514607A patent/JP6114187B2/ja active Active

Patent Citations (4)

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