Method for producing a material web, use thereof as a reinforcing ply for an elastomer item, and vehicle pneumatic tires

Abstract

The invention is directed to a vehicle pneumatic tire wherein strengthening plies are provided with steel cords running parallel to one another. The belt plies can be used, as isolated electrically conductive plates, for supplying electricity to electrical consumers such as sensors and actuators installed in the tire. Adjacent belt plies can be connected by puncture sensors to be able to identify damage to the belt caused by metallic parts penetrating from the outside, such as nails, on the basis of a change in the electrical resistance.

1 - 15 . (canceled) 
     
     
         16 . A pneumatic vehicle tire comprising a belt strengthening ply, wherein the belt ply comprises:
 an upper plate comprising a rubber mixture web;   a lower plate comprising a second rubber mixture web positioned directly below the upper plate;   a strengthening member web embedded between the upper plate and the lower plate, wherein the strengthening member web comprises a multiplicity of strengthening members that are positioned parallel to each other; and   a multiplicity of filaments positioned on top of and at least substantially transverse to the strengthening members, wherein the multiplicity of filaments are comprised of a non-conductive textile carrier and an electrically conductive coating that coats each filament,   wherein the belt strengthening ply is an isolated electrically conductive plate.   
     
     
         17 . The pneumatic vehicle tire of  claim 16 , further comprising a woven or knit fabric material placed in contact with the strengthening member web and comprising the multiplicity of filaments. 
     
     
         18 . The pneumatic vehicle tire of  claim 17 , wherein the woven or knit fabric comprising the multiplicity of filaments is substantially as wide as the strengthening member web. 
     
     
         19 . The pneumatic vehicle tire of  claim 16 , wherein each of the multiplicity of filaments has a length of from 2 cm to 10 cm. 
     
     
         20 . The pneumatic vehicle tire of  claim 17 , wherein the multiplicity of filaments are positioned or woven into the woven or knit fabric in a random arrangement such that successive filaments are in each case only partially positioned on identical individual strengthening members. 
     
     
         21 . The pneumatic vehicle tire of  claim 16 , wherein the strengthening members are steel cords present at a density of from 2 to 120 per decimeter width of the belt ply. 
     
     
         22 . The pneumatic vehicle tire of  claim 16 , wherein the filaments are randomly present above and below the multiplicity of strengthening members. 
     
     
         23 . The pneumatic vehicle tire of  claim 16 , wherein the electrically conductive coating comprises an elastomer and electrically conductive particles. 
     
     
         24 . The pneumatic vehicle tire of  claim 23 , wherein the electrically conductive particles are graphite particles, carbon black particles, or carbon nanotubes. 
     
     
         25 . The pneumatic vehicle tire of  claim 23 , wherein the electrically conductive coating further comprises an adhesion promoter and carbon black particles. 
     
     
         26 . The pneumatic vehicle tire of  claim 25 , wherein the adhesion promoter is a resorcinol-formaldehyde latex (RFL) comprising carbon black particles. 
     
     
         27 . The pneumatic vehicle tire of  claim 16 , wherein the non-conductive textile carrier is a monofilament, a yarn, or a cord. 
     
     
         28 . The pneumatic vehicle tire of  claim 16 , wherein the non-conductive textile carrier is rayon, polyester, polyamide, and/or aramid. 
     
     
         29 . The pneumatic vehicle tire of  claim 16 , wherein the pneumatic vehicle tire comprises at least two belt strengthening plies. 
     
     
         30 . A method for producing a pneumatic vehicle tire electrically conductive belt strengthening ply, which comprises:
 providing an upper plate comprising a rubber mixture web;   providing a lower plate comprising a second rubber mixture web;   providing a strengthening member web comprising a multiplicity of steel strengthening members that are positioned parallel to each other;   providing a multiplicity of filaments each comprising a non-conductive textile carrier and an electrically conductive coating;   positioning the upper plate on top of the strengthening member;   positioning the strengthening member web on top of the lower plate;   leading under tension the positioned upper plate, strengthening member web, and lower plate through a roll gap of a roll calender;   applying the multiplicity of filaments to the strengthening member web before leading the upper plate, strengthening member web, and lower plate through the roll gap; and   calendaring the upper plate, strengthening member web with filaments, and lower plate thereby joining together the upper plate with the strengthening member and the lower plate,   wherein the multiplicity of filaments contact at least some of the strengthening members at least substantially transversely with respect to the parallel strengthening members.   
     
     
         31 . The method of  claim 30 , further comprising providing a woven or knit fabric comprising the multiplicity of filaments, and further comprising positioning the woven or knit fabric above or below the strengthening member web before leading the upper plate, strengthening member web, and lower plate through the roll gap of the roll calender. 
     
     
         32 . The method of  claim 31 , wherein the woven or knit fabric at least has a width substantially corresponding to a width of the strengthening member web. 
     
     
         33 . The method of  claim 31 , which further comprises:
 leading the strengthening member web over a creel before leading the upper plate, strengthening member web, and lower plate through the roll gap of the roll calender to alternately lift individual strengthening members of the strengthening member web, and   placing the filaments between the alternately lifted and non-lifted strengthening members.   
     
     
         34 . The method of  claim 31 , wherein the electrically conductive coating of the filaments comprises or is composed of an elastomer, optionally a resorcinol-formaldehyde latex (RFL), and electrically conductive particles, selected from one or more of carbon black particles, graphite particles, and carbon nanotubes. 
     
     
         35 . The method of  claim 34 , which further comprises:
 dipping an uncut filament into a suspension comprising RFL and carbon black particles, wherein the suspension comprises from 10% to 70% by weight of carbon black particles; and then   cutting the uncut filament, thereby producing the multiplicity of filaments.