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1. EP2036706 - PRODUCTION METHOD OF BEAD FILLER MATERIAL WITH BEAD CORE

Office European Patent Office
Application Number 07745281
Application Date 14.06.2007
Publication Number 2036706
Publication Date 18.03.2009
Publication Kind B1
IPC
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
CPC
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 ; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
48Bead-rings or bead-cores
B29D 2030/481
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 ; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
48Bead-rings or bead-cores
481Fillers or apexes
B29D 2030/482
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 ; (e.g. produced by casting, moulding, compression moulding, injection moulding, centrifugal casting)
48Bead-rings or bead-cores
482Applying fillers or apexes to bead cores
Applicants BRIDGESTONE CORP
Inventors SHINO YOSHIKATSU
Designated States
Priority Data 2006166316 15.06.2006 JP
2007062024 14.06.2007 JP
Title
(DE) VERFAHREN ZUR HERSTELLUNG VON KERNREITERMATERIAL UND WULSTKERN
(EN) PRODUCTION METHOD OF BEAD FILLER MATERIAL WITH BEAD CORE
(FR) PROCÉDÉ DE FABRICATION DE MATÉRIAU DE REMPLISSAGE DE TALON AVEC NOYAU DE NERVURE
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 4 is helically winded and laminated around a bead core 3 which is concentrically arranged on a rotatable base 1, thereby transferring radially extending linear projections 2 provided on the rotatable base 1 to a surface of the bead filler material contacting the rotatable base 1 to form the linear grooves over the whole circumference of the bead filler material.

(FR)
Pour constituer des rainures linéaires s'étendant dans la direction radiale et contribuant à la décharge d'air en douceur à la surface d'un côté dans le sens de l'épaisseur au terme de la fabrication d'un matériau de remplissage de talon de forme dans l'ensemble annulaire devenant le stratifié d'enroulement d'une bande de caoutchouc en forme de ruban, la bande de caoutchouc en forme de ruban (4) est stratifiée en spirales autour d'un noyau de nervure (3) disposé de manière concentrique sur un substrat rotatif (1), et des rainures linéaires produites par les parties saillantes (2) disposées sur le substrat rotatif (1) pour s'étendre dans la direction radiale sont formées dans la surface de contact avec le substrat rotatif (1) sur toute la circonférence.