PNEUMATIC TIRE MANUFACTURING METHOD

Title:

PNEUMATIC TIRE MANUFACTURING METHOD

Document Type and Number:

WIPO Patent Application WO/2015/083441

Kind Code:

A1

Abstract:

This manufacturing method of a pneumatic tire having a tread reinforcing layer (7) reduces tire mass while maintaining the durability performance of the tire. A tread reinforcing layer formation step includes a winding step for winding belt-shape plies (11) around an approximately cylindrical winding surface. The winding step involves: a first winding step in which, with the side edges (11s) of the belt-shape plies (11) spaced from one another, said belt-shape plies (11) are spirally wound from a first end (7e) located on one side of the tire in the axial direction, to a second end (7i) located on the other side of the tire in the axial direction; and a second winding step in which, with the side edges (11s) of the belt-shape plies (11) spaced from one another, said belt-shape plies (11) are spirally wound from the second end (7i) to the first end (7e) in the direction opposite that in the first winding step. A lattice-form tread reinforcing layer (19) is formed that has gaps (24) substantially rhombic in shape and bounded by the belt-shape plies (11).

Inventors:

OTANI MASAHUFUMI (JP)

Application Number:

PCT/JP2014/077224

Publication Date:

June 11, 2015

Filing Date:

October 10, 2014

Export Citation:

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Assignee:

SUMITOMO RUBBER IND (JP)

International Classes:

B29D30/30; B60C9/20; B60C9/18; B60C9/22

Foreign References:

JP2000280709A	2000-10-10
JP2012179850A	2012-09-20
JP2012025308A	2012-02-09
JP2003300257A	2003-10-21
JP2007246052A	2007-09-27
JPH09118109A	1997-05-06

Other References: