Apr 20, 2023 S.Movchan Straw manufacturing and QC 1

Straw machine status

• straw fabrication option 1: removing metallization from tape edges by laser• study straw #3678: results• conclusion• straw fabrication option 2: moving anvil • study straw #3675: results• conclusion

Presented by S.Movchan

Apr 20, 2023 S.Movchan Straw manufacturing and QC 2

Straw #3678 :

F=200 gram + P=50 a.u.V=10 mm/sec

first 13 samples (10 cm each) of straw are fabricate from tape without metallization on it edges (removed by laser)

samples 14÷29 are fabricate from standard tape

check seams by microscope: zoom x 200, transmit light

Apr 20, 2023 S.Movchan Straw manufacturing and QC 3

Tape with removed metallization from both edges by laser

0.5 mm

0.5 mm

Apr 20, 2023 S.Movchan Straw manufacturing and QC 4

Straw #3678

Sample #

Apr 20, 2023 S.Movchan Straw manufacturing and QC 5

3 seam types: zoom x 200

1. no metallization:

PET+PETwelding

2.Cu+Au

metal+metalwelding

3.PET+PET

andPET+metal

welding

Apr 20, 2023 S.Movchan Straw manufacturing and QC 6

Very good seams (dL>9 mm): zoom x 200

Sample #1 Sample #10

0.25 mm

Apr 20, 2023 S.Movchan Straw manufacturing and QC 7

Very good sample #10: dL=10 mm (zoom x 60)

After seam brake

Apr 20, 2023 S.Movchan Straw manufacturing and QC 8

Good seams (dL>4 mm): zoom x 200

Sample #6 (dL=4 mm) Sample #8 (dL=9 mm)

Apr 20, 2023 S.Movchan Straw manufacturing and QC 9

“Bad” seams (dL<1 mm): zoom x 200

Sample #5 Sample #7

Apr 20, 2023 S.Movchan Straw manufacturing and QC 10

1) Preliminary: laser don’t make worse seam quality

2) 3 types of seam: PET+PET, metal + metal, PET + metal

3) Very good seams are without metal particles inside seam

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4) Difference between good seams (samples #6 and #8) and bad seams (samples #5 and #7) in case when metal exist inside seam is unobvious

Apr 20, 2023 S.Movchan Straw manufacturing and QC 11

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

Apr 20, 2023 S.Movchan Straw manufacturing and QC 12

Dust accommodation on moving anvil

Apr 20, 2023 S.Movchan Straw manufacturing and QC 13

Straw #3675: F=(5-6) kg, dL=(5-19) mm

Samples 13-32 were producewith moving anvil

Samples 26-32:

PET without metallization

Apr 20, 2023 S.Movchan Straw manufacturing and QC 14

1 5 9 13

Apr 20, 2023 S.Movchan Straw manufacturing and QC 15

17 21 25 29

Apr 20, 2023 S.Movchan Straw manufacturing and QC 16

Conclusion

Preliminary: - straw quality is good - additional investigations are needed