WINDING
Bright side out or dull side out.
THICKNESS
0.007 mm, 0.008 mm, 0.009 mm and 0.012 mm
THICKNESS TOLERANCE
± 8% over nominal thickness.
PINHOLE COUNT
| FOIL THICKNESS (MM) |
AVERAGE PINHOLES (PER SQ. M) |
MAXIMUM |
| 0.007 |
400 |
700 |
| 0.008 |
200 |
500 |
| 0.009 |
<100 |
200 |
| 0.012 |
<50 |
150 |
On request, better pinhole count can be maintained.
WETTABILITY (SURFACE TENSION)
A to C or to withstand 68 to 72 dynes (i.e. 70 ± 2 dynes) on either face of foil.
STICKNESS
Material shall fall freely on 1.5 m length load.
SPLICING
Shall be made of smooth ultrasonic welding through out the web width.
Number of splicing : |
Average number of splices per roll shall not exceed 2 whereas maximum number of splices in a roll is 3 and the permissible frequency of occurrence will not exceed the limit shown below: |
| Consignment size having 3 splices |
Maximum number of rolls |
| 1-10 rolls |
2 |
| 11-30 rolls |
4 |
| 31-50 rolls |
6 |
Identification of Joints : |
All splice joints will be flag marked for easy identification. |
Core material : |
Aluminium or Steel. |
Core length & I. D. : |
Flush or Protruded with 76 mm (+/-0.5 mm), 102 mm (+1.5/-0.5 mm) or 152 mm ID (+2.5 / 0.5 mm) |
Reel OD : |
700 mm maximum |
Roll width : |
950 mm maximum ± 1 mm. |
Finning : |
Finning caused by web misalignment shall not exceed 2 mm and shall not occur more than once in every three rolls. |
Identification : |
Each reel is identified with a ticket having reel number, specification, operator number and manufacturing date. |
Packing : |
Rolls individually wrapped, placed in top bottom combination wooden boxes with Silica Gel packets and making as specified by customer. |
Test Certicates : |
Test certificate incorporate (a) Thickness (b) Width (c) Wettability and (c) Number of joints. Any other information sought by the customer can also be given. |
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