1. WELCOME TO MY PRESENTATION

2. ACKNOWLEDGEMENT
All the thanks and gratefulness to almighty Allah who has created us and has made our sense to justify.
Then, I pay my tribute and profound respect to Professor Dr. Md. Fazlul Karim, Principal of Bangladesh college of Leather Engineering & Technology for offering me the chance to undertake such a useful and interesting project in my thesis work.
Likewise, I am so grateful and like to express my indebtness to my guide teacher Mr. Noor Mohammad, Lecturer (Footwear tech.) because of his invaluable direction and suggestion to complete my thesis work and also for his conductive idea.
Furthermore, I am really owed to Mr. Amal Kanti Deb, Head of the Department of Footwear Engineering who sacrificed his valuable time to help me.
Above all, I would like to thank and express my gratitude for contribution to my project work to Mr. Mohammad Mahtabul Alam, Lecturer (Footwear tech.) who has helped me tremendously and allowed his time for me to solve my query.
Syed Md. Jahangir Alam
MAY, 2010

3. NAME OF MY PROJECT WORK
“ STUDIES ON THE POLYURETHANE AND NEOPRENE ADHESIVE FOR THE SOLE BONDING OF THERMOPLASTIC RUBBER (TPR) SOLE WITH DIFFERENT TYPES OF UPPER MATERIALS”

4. AIM OF MY PROJECT WORK To analyze the sole bonding of TPR sole.   
To know which adhesive is better for TPR sole.  
To find out the market value of PU and Neoprene adhesives and TPR sole. 
To give a rough idea about the PU and Neoprene adhesives for the sole bonding of TPR sole. 
To find out the weakness and potential of my project work. It may be made an effort to find the problem related to the manufacturing of footwear and their remedies.
To make quality footwear.

5. Adhesive that widely use in Footwear Industry
Natural Rubber Latex
Rubber Solutions
Polychloroprene (Neoprene) Solutions
Polyurethane (PU) Solutions
Hot Melt Adhesive
• Polyamide
• Polyester
• Ethylene vinyl acetate (EVA)
• Thermoplastic Rubber based
Heat Fusible Coatings
Pressure Sensitive
Cyanoacrylates (Supper Glues)

6. PROPERTIES OF PU ADHESIVE
Flammable.
Superior plasticizer and grease or oil resistance.
Limited cold tack life.
Strong bond with most materials.
Difficult to remove.
More compatible with wider of material than
neoprene.
High green strength but at least 48 hours
needed to reach full strength.

7. PROPERTIES OF NEOPRENE ADHESIVE
1. Generally flammable.
2. High strength bond.
3. Good grab.
4. Long tacky life.
5. Flexible film.
6. Easy handling.
7. Limited plasticizer resistance.

8. PROPERTIES OF THERMOPLSTIC RUBBER (TPR) SOLE
Superficially similar to vulcanized rubber
Carries a distinctive synthetic smell which is quite different from VR
Very rubbery feel (grippy)
Quite soft as judged by easy indentation, but surprisingly stiff
Sheened surface finish
Available in all colours

9. World soling material usage by pair age, 2005

10. TEST REPOT TYPES OF UPPER UPPER FAILURE SOLE PRESSURE N/mm PU Neoprene
Aniline Finish Leather
Yes
…..
1.60
.55
Semi Aniline Finish Leather
2.50
.50
Curst Leather
.25
Corrected Grain Leather
5.20
PU Coated
Fabrics
2.35
.20

11. MY PRODUCT

12. CONCLUSION
In fact, Shoes are needed for foot protection against hard pavements or as protection against rocky terrain or infection. Thus sole plays a vital role in a shoe. So the adhesion of sole is very important in manufacturing shoes.
According to the peel bond strength test, I found average better result using PU adhesive than neoprene. Neoprene can not form bond with Thermoplastic Rubber sole. I found the highest bond strength using PU adhesive in corrected grain leather sample. The standard test result for TPR sole bonding is 5 N/mm. Corrected grain leather specimen bond strength are 5.2 N/mm & 4.8 N/mm that are nearer to this standard value. There is some deviation from standard method in my bonding system for some limitation.
So, we can say that TPR sole is suitable for corrected grain leather and using adhesive will be polyurethane(PU).

13. THANKS TO ALL