PROTON JISHUKEN CONFERENCE ON 15th February 2008

FOR PART NAME: TYRE 195/60 R15 88H

PART NUMBER: PW824308MODEL : NEW SEDAN & GXMC3

PRESENTED BY:

EASY TBM GROUP CST AS

Group Motto: Strive For Excellence

Project Theme: Quality Without Compromise

Sidewall Blister

Final Finish – Tyre Inspector

WHATWHAT

WHYWHY

WHENWHEN

WHOWHO

WHEREWHERE

HOWHOWOff standard Catalogue - max. 5

blisters more than 6 mm

Grader - Quality Management

During Building process (sidewall stitcher)

Poor stitching process

Tyre blister in sidewall

Our problem is the air trapped between sidewall rubber and

casing

WHENWHEN

WHEREWHERE

S/Wall StitcherNG

Low Pressure = NG

MATERIALMANAGEMENT MACHINE

MAN METHOD

Inappropriate sidewall profile

Wrong pressure used

Wrong settingPoor

workmanship

Air trapped in sidewall

Curing Inspection

Process Flow after countermeasure

Countermeasure done/plan for each major contributor

Close monitoring (> 3days) histogram

Previous jishuken problem(s) monitoringhistogram (3mth per prob.)

a. Daily inspection of Stitcher Pressure condition at Building process.

• 2G @ Tyre Building during assembly process.• New Stitchting Pressure Digital Control at TBM• Standardized Stitching Pressure

From Nov 07 till Jan 08 scrap improvement, we manage to reduced cost of scrap tyre up to RM

2260.00 /month.

Ave. for 2 mth scrap RM390.00

RM2652.00

OKNG

Cost of kaizen

Nov. 07

Dec. 07

Jan 08

Monitoring in Jan 08 (Total Scrap = 6pcs)

3pcs scrap come from 3# machine