Guang Xi Baisheng Light Metal Material Co.Ltd
Guang Xi Bai Sheng Light Metal Material Co.Ltd Aluminium semi-products leading manufacturer and distributor in china
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ALUMINIUM HOUSEHOLD FOILS
To establish definitive quality standards on foil rolls, thereby minimizing claims attributable to any lack of understanding between supplier and customer.
This specification covers 8011 or 1235 alloy foil master rolls for household foil and describes the quality attributes of the master foil rolls. The roll can be cut into small rolls and be used to pack and freshen the household food.
Alloy and temper should correspond to Table 1.
Table 1
| Alloy | Temper |
| 8011 | O |
| 1235 | O |
|
Gauge mm | Gauge Tolerance mm |
Width mm | Width Tolerance mm |
ID mm |
OD mm |
| 0.010~0.050 | ±5% | 40~ 1600 | ±1 | Æ 76.2 | 600max to ID 76.2 |
| Æ 150 | 900max to ID 150 & 152 | ||||
| Æ 152 |
The chemical composition should correspond to Table 3.
Table 3
|
Alloy | Chemical Composition % | |||||||||
|
Si |
Fe |
Cu |
Mn |
Mg |
Zn |
Ti | Other |
Al | ||
|
Single | Total up | |||||||||
| 8011 | 0.58~0.66 | 0.63~0.85 | 0.05 | 0.03 | 0.03 | 0.10 | 0.02~0.04 | 0.05 | 0.15 | Remainder |
| 1235 | 0.12～0.16 | 0.45～0.52 | 0.02 | 0.01 | 0.01 | 0.01 | 0.02 | 0.03 | ＞99.35 | |
Table 4
|
Alloy-Temper |
Gauge mm | Tensile Strength Mpa |
Elongation % |
|
8011/1235-O | 0.010-0.025 | 80-110 | ≥1.5 |
| 0.025-0.05 | 80-110 | ≥2.5 |
3.5.1 The surface shall be cleaned and free from inclusions, scratches, wrinkles, cracks, overlapping or other internal defects.
3.5.2 There will be no adhesion or tearing when the roll is unfolded, and the free uncoiling length should be 1.5m max.
3.5.3 One side is bright, the other side is dull. The bright surface is usually at the outer side of the roll, and the dull surface is at the inner side of the roll.
3.5.4 Pin-holes
The pin-holes should correspond to Table 5.
Table 5
| Gauge | 0.010～0.012 | >0.012～0.015 | >0.015～0.020 | ＞0.020 |
| Pinholes/m2(max) | 100 | 50 | 20 | 0 |
| Note: When the customer has special requirement, it has to be negotiated with supplier and demander. | ||||
3.5.5 Spice
The splices are as below Table 6.
Table 6
| Roll Diameter,mm | Splices |
| ≤400 | ≤1 |
| ＞400 | ≤2 |
a) All splices to be ultrasonic/tape.
b) It is allowed one splice per roll. (Max. once per 2000m)
c) Marked at the roll edge with a film, placed close to the splice.
3.5.6 Wettability
The wettability corresponds to A grade quality.
4.1 Quantities – As specified on the purchase order with a tolerance of +/- 10% unless otherwise stated on the order.
4.2 Packaging – Foil rolls are to be packed in collapsible aluminum racks or steel racks as specified in such a manner that normal handling by common carrier will ensure safe transportation without damage to the foil. This includes wrapping to protect the foil from water stain and corrosion.
4.3 Identification – Each roll shall be identified with the following:
a) Order number (release number)
b) Part number (from RMC Purchase Order)
c) Gauge (mm)
d) Width (mm)
e) Net weight (kg)