TRUCK TYRE RETREADING WITH COLD PROCESS

What is retreading?
‘Retreading’ means taking a worn casing of good structural quality and putting it through a process which completely renews the tread of the tyre and sometimes the sidewall rubber. The rebuilt tyre is then subjected to a curing process where the new rubber is vulcanised to the casing and the tread pattern is formed.

Over the years tyre manufacturers have invested heavily in product development to deliver tyres that not only have a ‘first life’ but are also designed to perform equally as well in subsequent second and even third lives. Stronger casings, improved re-manufacturing techniques, a variety of specialist rubber compounds, coupled with the need to recycle and reduce the negative impact on the environment has lead to a sustained growth in the retread industry.

A retread tyre starts life as a worn tyre, where perhaps the tread is down to 2-3 mm and may have been previously re-grooved, or one that’s been punctured and needs a repair. The first part of the process is to inspect the tyre to see whether it meets with our stringent quality guidelines.

Retreading of damaged tyre is done by conventional hot matrix curing in most curing in most cases. But recently a new technology has been developed called procured Tread Rubber Retreading process which is commonly known as cold process retreading. In this process, procured tread rubber  already has at read pattern on it eliminating the need for a tread matrix at vulcanizing stage. Tread Rubber is procured alongwith other new raw materials.

Retreading tyre by procured method give 50% more mileage than the tyre by conventional process.

Initial inspection

At initial inspection a visual and tactile examination of the casing takes place, then a non destructive shearography test or scan is completed. This detects inherent separations in the carcass that are otherwise invisible and would remain undetected by the naked eye. If accepted after this stage it will then go through the complete retread process.

INTRODUCTION
CONSTRUCTION OF TYRES
USES AND APPLICATION
B.I.S. SPECIFICATION
RAW MATERIAL REQUIRED FOR PRE-CURED RETREADING PROCESS
PROPERTIES
MARKET SURVEY
INTERNATIONAL VS. INDIAN EXPERIENCE IN TYRE RETREADING:
SIMILARITIES & DIFFERENCES
MARKET POSITION OF TYRE RETREADING
OVERVIEW OF TYRE RETREADING INDUSTRIES IN ETHIOPIA
GLOBAL RUBBER TYRE MARKET
DETAILED IMPORT DATA OF: TYRE RETREADING
DETAILED EXPORT DATA OF: TYRE RETREADING MACHINE
PRESENTLY FEW RUNNING TYRE RETREADING WORK
MANUFACTURING PROCESS OF RETREAD TYRE BY COLD PROCESS
PROCESS IN DETAILS OF TYRE RETREADING
PROCESS FLOW DIAGRAM
PRINCIPLES OF PLANT LAYOUT
PLANT LOCATION FACTORS
EXPLANATION OF TERMS USED IN THE PROJECT REPORT
PROJECT IMPLEMENTATION SCHEDULES
PLANT LAYOUT
SUPPLIERS OF RAW MATERIALS
SUPPLIERS OF RAW MATERIALS (GLOBAL)
SUPPLIERS OF PLANT AND MACHINERY
SUPPLIERS OF PLANT AND MACHINERY (GLOBAL)
COMPLETE PLANT SUPPLIERS
DETAILS OF THE MACHINERY USED IN TYRE RETREADING

APPENDIX – A:

1.      COST OF PLANT ECONOMICS
2.      LAND & BUILDING
3.      PLANT AND MACHINERY
4.      FIXED CAPITAL INVESTMENT
5.      RAW MATERIAL
6.      SALARY AND WAGES
7.      UTILITIES AND OVERHEADS
8.      TOTAL WORKING CAPITAL
9.      COST OF PRODUCTION
10.      PROFITABILITY ANALYSIS
11.      BREAK EVEN POINT
12.      RESOURCES OF FINANCE
13.      INTEREST CHART
14.      DEPRECIATION CHART
15.      CASH FLOW STATEMENT
16.      PROJECTED BALANCE SHEET