Steel cord for reinforcing tire

Steel cord for reinforcing tire

  • CN 102,272,377 A
  • Filed: 12/09/2009
  • Published: 12/07/2011
  • Est. Priority Date: 01/09/2009
  • Status: Active Application
First Claim
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1. an all-steel cord comprises sandwich layer and skin;

  • Described sandwich layer comprises the first steel fibril of first number,Described first number is 3-8, and the described first steel fibril has the lay pitch greater than 310mm;

    Described skin comprises the second steel fibril of second number, and described second number is 3-10, and at least one described second steel fibril is polygon preformed;

    Described skin is combined in around the sandwich layer with core lay pitch spiral turn, and when the average diameter of the second steel fibril be R fDuring mm, the core lay pitch is 15R f-150R fIt is characterized in that, in a single plane, at least one described first steel fibril is pre-formed as waveform, and when the average diameter of the first steel fibril be D fDuring mm, wave height is 1.2D fMm-2.4D fMm, and wavelength is 10D fMm-25Dfmm.

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