1. S.Movchan Straw manufacturing and QC
Straw machine status
straw fabrication option 1: removing metallization from
tape edges by laser
laser mode optimization
straw # results
conclusion
straw fabrication option 2: moving anvil
straw # results
straws storage
plans
Presented by S.Movchan
19-Jun-18
S.Movchan Straw manufacturing and QC

2. Laser mode optimization for Hostaphane RNK 2600
Goal of optimization:
Remove metallization and to do min PET irradiation
Laser graver parameters:
laser power
laser pulses frequency
lines per mm
laser beam scan speed
Optimization to do for stopped tape
(speed v=0 mm/sec)
Total: 21 samples
19-Jun-18
S.Movchan Straw manufacturing and QC 2

3. S.Movchan Straw manufacturing and QC
Laser optimal modes:
Non moving tape
Summary:
Power: W=(30-40)%
Frequency: F=40 kHz
Beam speed: ( ) mm/sec
Beam focus: focused (D=50 µm)
Lines/mm: 40
Scan type: by line
Tape speed: 0 mm/sec
Manufacture speed: (10-46) mm/sec
Moving tape
Summary:
Power: W=40%
Frequency: F=40 kHz
Beam speed: mm/sec
Beam non focus: + 2 mm
Scan type: by circle with D=0.4 mm
Tape speed: mm/sec
Max manufacture speed: 46 mm/sec
19-Jun-18
S.Movchan Straw manufacturing and QC 3

4. S.Movchan Straw manufacturing and QC
Conclusion
Laser type: solid, wave ~ 1 µm
Nominal laser power: P=20 W
Beam effective diameter: about 60 µm (nominal - 50 µm)
Optimal operation mode (minimum power for metal removing):
Laser effective power: (4-5) W
Laser beam frequency: F=40 kHz
N laser pulses per point: 1 pulse
Beam scan speed: ≤ 6000 mm/sec
Beam non focus: mm
Scan type: by circle with D=0.4 mm
Line speed of metal removing: up to 50 mm/sec
Laser beam melt base material (PET) at power about (8-10) W
19-Jun-18
S.Movchan Straw manufacturing and QC 4

5. Spool #17 (RNK 4600): remove metallization from both tape edges
W=0.4 mm
Tape width:
W=31.4 mm
Zoom x 200
19-Jun-18
S.Movchan Straw manufacturing and QC 5

6. Spool #18 (RNK 4600): remove metallization from one tape edge
L=1.5 m
L=1.5 m
Zoom x 200
19-Jun-18
S.Movchan Straw manufacturing and QC 6

7. S.Movchan Straw manufacturing and QC
New straws:
Hostaphan RNK 4600, Cu+Au
Straws fabricate for tests:
# 3684 – no metallization on one tape side
# 3685 – no metallization on both tape sides
# 3686 – no metallization on both tape sides
# 3687 – no metallization on both tape sides
Straw #3684÷3687:
F=300 gram + P=20 a.u.
V=10 mm/sec
19-Jun-18
S.Movchan Straw manufacturing and QC 7

8. S.Movchan Straw manufacturing and QC
F=(6.0±0.5) kg
dL= (11÷22) mm
19-Jun-18
S.Movchan Straw manufacturing and QC 8

9. S.Movchan Straw manufacturing and QC
Conclusion
2 types of test straws fabricated (from Hostaphan RNK 4600):
- metallization removed from one tape edge (straw #3684)
- metallization removed from both tape edges (straw # ( ))
Straw tensile test results:
Straw #3685:
F=(6.0±0.5) kg
dL=(11÷22) mm
for old straws: F=(3.5-6) kg, dL=(1-10) mm, non stable results
Gas leak tests – in progress
19-Jun-18
S.Movchan Straw manufacturing and QC 9

10. Straw #3675 fabricated with moving anvil: F=200 gram + P=50 a.u.
V=10 mm/sec
check seams by microscope: zoom x 200, transmit light
19-Jun-18
S.Movchan Straw manufacturing and QC 10

11. Dust accommodation on moving anvil
19-Jun-18
S.Movchan Straw manufacturing and QC 11

12. Straw #3675: F=(5-6) kg, dL=(5-19) mm
Samples were produce
with moving anvil
Samples
26-32:
PET without
metallization
19-Jun-18
S.Movchan Straw manufacturing and QC 12

13. S.Movchan Straw manufacturing and QC
Conclusion
Preliminary:
- straw quality is good
- additional investigations are needed
19-Jun-18
S.Movchan Straw manufacturing and QC 13

14. S.Movchan Straw manufacturing and QC
Straws storage
19-Jun-18
S.Movchan Straw manufacturing and QC 14

15. Common view

16. 2 gates for free straw access

17. Procedure:

18. Straws storage

19. Straws storage
Max straw length mm Number of straws per set 35 pc Number of sets 96 Total number of straws pc
max number of sets max number of straws pc