Thin layer capply and low-weight tire using the same

Patent metadata

Field	Value
Publication number	US-2019160874-A1
Application number	US-201816021723-A
Country	US
Kind code	A1
Filing date	Jun 28, 2018
Priority date	Nov 29, 2017
Publication date	May 30, 2019
Grant date	—

Abstract

The present invention provides a thin layer capply and a low-weight tire to which the thin layer capply is applied. The thin layer capply of the present invention has effects of reducing a rolling resistance of the tire through a weight reduction and improving fuel efficiency of a vehicle in which the tires are mounted while maintaining stiffness required for the tire, by forming the cord spinning layer in a thin tape form by spinning and depositing a plurality of cord strands, rather than twisting a plurality of cord strands to form the capply cord.

First claim

What is claimed is:

1 . A thin layer capply, comprising:
a cord spinning layer which is formed in a thin tape form by spinning a plurality of cord strands; and a rubber coating layer which is coated on the cord spinning layer to cover an outer portion of the cord spinning layer.

2 . The thin layer capply of claim 1 , wherein the cord strand is made of any one or more materials selected from polyester, nylon, aramid, polyketone, and polyethylene terephthalate (PET).

3 . The thin layer capply of claim 2 , wherein a fineness of warp yarn of the cord strands forming the cord spinning layer is 6000 D to 14000 D, and the number of warp yarns is 20 EA to 25 EA.

4 . The thin layer capply of claim 3 , wherein the material strength of one cord strand is 8 g/d to 11 g/d.

5 . The thin layer capply of claim 4 , wherein a width of the thin layer capply is 10 mm to 15 mm, and a thickness of the thin layer capply is 0.2 mm to 0.4 mm.

6 . The thin layer capply of claim 1 , wherein the rubber coating layer is made of a compound including any one or more of resorcinol formalin latex (RFL), a maleic anhydride resin, and isocyanate.

7 . A low-weight tire comprising:
the thin layer capply of claim 1 formed to cover an upper side of a belt layer in a tread rubber layer.

Assignees

• Kumho Tire Co Inc

Inventors

• Lee Sang-Woo

Classifications

• D02G3/48

  Tyre cords {(tyre reinforcements B60C9/00; metal cords for reinforcing rubber or plastic articles D07B1/0606)} · CPC title

• B29D2030/383

  Chemical treatment of the reinforcing elements, e.g. cords, wires and filamentary materials, to increase the adhesion to the rubber · CPC title

• B60C9/0042

  Reinforcements made of synthetic materials · CPC title

• B29D2030/381

  the inserts incorporating reinforcing parallel cords; manufacture thereof · CPC title

• B60C2009/2214

  characterised by the materials of the zero degree ply cords · CPC title