1. Microscopic Observations and Tensile Tests of the straws - Optical microscope observations - SEM observations - Tensile tests results Presented by M. Scheubel EN/MME-MM 18-October-20101 M. Scheubel - Microscopic Observations and Tensile Tests of the straws

2. Longitudinal scratches and transversal marks on PET film received from Putzfolien Optical microscope observations 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 2

3. 18-October-2010 SEM observations of the coatings 3 Melinex 406: Orientation Hostaphan RNK 2600: Homogeneous

4. SEFAR welding Optical microscope observations 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 4 Hostaphan RNK 2600Melinex 406 620<Overlap<800 µm 288<welding<451 µm

5. SEFAR welding Optical microscope observations 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 5 Hostaphan RNK 2600Melinex 406

6. SEFAR welding: not well-centered within the overlap area SEM observations 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 6 Hostaphan RNK 2600Melinex 406 End of inside Tilt=60° Scratch

7. Tensile tests 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 7

8. Tensile tests 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 8 Sample Average Load max (N) Standard Deviation Average Tensile strength (MPa) Standard Deviation Breakage point Excell-XG532-uncoated-welded34.9/93.8/weld Hostaphan-GN4600-50nmCu20nmAu-SEFAR welded35.31.198.51.0weld Hostaphan-GN4600-50nmCu20nmAu-JINR welded36.01.4103.50.9weld Excell-XG532-50nmCu20nmAu-welded40.32.9112.28.2weld Excell-XG532-100nmCu20nmAu-welded45.71.8125.75.3weld Hostaphan-GN4600-uncoated-welded46.31.5126.53.4in the grips Hostaphan-GN4600-uncoated-unwelded55.81.6133.48.0in the grips Hostaphan-GN4600-50nmCu20nmAu-unwelded51.52.6136.33.3in the grips UNKNOWN (Hostaphan-RNK2600) uncoated-unwelded49.73.7136.67.6in the grips Excell-XG532-uncoated-unwelded51.52.6143.84.3in the grips Hostaphan-RNK2600-uncoated-unwelded50.11.8140.42.4in the grips Hostaphan-RNK2600-50nmCu20nmAu-SEFAR welded43.43.5118.49.0weld Melinex-406-uncoated-unwelded/Roll 1.1.752.65.1143.410.1in the grips Melinex-406-100nmCu20nmAu-SEFAR welded52.41.1140.53.4weld Melinex-406-100nmCu20nmAu-SEFAR welded/Straw #536.41.199.38.0weld

9. Tensile tests 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 9 Hostaphan RNK 2600 unwelded Hostaphan RNK 2600 welded Melinex 406 welded

10. Conclusions Material: – Marks and scratches  investigations in progress suppliers – Uniform coatings Welding: – Too small  SEFAR to improve weld width – Not well-centered in the overlap  SEFAR to correct Tensile tests: – SEFAR Melinex straws good weld quality – Melinex 406 better weld quality than Hostaphan RNK 2600  SEFAR to investigate. 18-October-2010 M. Scheubel - Microscopic Observations and Tensile Tests of the straws 10