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1. US20090199954 - Method for producing a bead filler material with a bead core

Office United States of America
Application Number 12308224
Application Date 14.06.2007
Publication Number 20090199954
Publication Date 13.08.2009
Publication Kind A1
IPC
B29D 30/06
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof
B29D 30/48
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
30Producing pneumatic or solid tyres or parts thereof
06Pneumatic tyres or parts thereof
48Bead-rings or bead-cores; Treatment thereof prior to building the tyre
Applicants Bridgestone Corporation
Inventors Shino Yoshikatsu
Agents OLIFF &; BERRIDGE, PLC
Priority Data 2006166316 15.06.2006 JP
Title
(EN) Method for producing a bead filler material with a bead core
Abstract
(EN)

A bead filler material having a generally toric shape is produced by winding and laminating a ribbon-like rubber strip. In conjunction with completing the production of the bead filler material, in order to form linear grooves radially extending on a surface of one side of the bead filler material in the thickness direction and contributing to smooth discharge of air, the ribbon-like rubber strip is helically winded and laminated around a bead core which is concentrically arranged on a rotatable base, thereby transferring radially extending linear projections provided on the rotatable base to a surface of the bead filler material contacting the rotatable base to form the linear grooves over the whole circumference of the bead filler material.