By Biolastic Team · 3/11/2026
A practical B2B guide to 9 metre aluminium foil roll width, gauge, net weight, sheet yield, food-contact checks and delivered cost per wrap.
A nine-metre foil roll sounds like a straightforward purchase. Yet two rolls with the same length can contain very different amounts of aluminium. One may be narrower; another may have a different gauge or a heavier core. For a restaurant buying cartons every month, those differences affect the number of usable wraps, the time spent at the packing counter and the actual cost of every order.
The useful purchasing rule is simple: compare width × usable length × foil thickness, then check food-contact suitability and calculate cost per accepted wrap. Roll price alone is not enough.
This guide is written for restaurants, cloud kitchens, bakeries, caterers, hotel kitchens, food-service distributors and international wholesale buyers. It is equally relevant to businesses buying packaging in Siliguri, Bagdogra, Jalpaiguri, Darjeeling, the Dooars, Sikkim, Assam and elsewhere in India.
Biolastic's live catalogue includes a 9 Metre Aluminium Foil Roll for Food Wrapping. The confirmed catalogue detail is the nominal 9 m format. The listing expressly asks buyers to confirm width, foil gauge, net foil weight, brand or manufacturer, carton packing, food-contact evidence, price, MOQ and current availability before purchasing. It does not claim equivalence to another manufacturer's branded roll.
This distinction matters. The calculations in this guide are educational examples, not measured specifications or commercial quotations for Biolastic stock.
| Buying field | What to ask for | Why it matters |
|---|---|---|
| Nominal length | 9 m and actual usable-length tolerance | Determines cut count |
| Roll width | Millimetres, with tolerance | Determines whether one sheet covers the food |
| Foil thickness | Microns (µm), measurement method and tolerance | Influences mass and handling |
| Net aluminium weight | Excluding core, box and outer wrap | Allows like-for-like material comparison |
| Core and dispenser | Core diameter and cutter format | Affects use at the counter |
| Food-contact evidence | Documentation for exact grade and conditions | Safety and compliance |
| Carton details | Rolls per carton, dimensions, gross weight | Freight and storage planning |
| Commercial terms | Current MOQ, tax, freight, lead time | Determines landed cost |
A 9 m roll at 300 mm width contains 2.7 m² of foil surface. At 450 mm width, it contains 4.05 m²—50% more area at the same nominal length.
Foil area (m²) = length (m) × width (m).
For a rectangular cut, width determines coverage across the food and cut length determines coverage along it. A narrow roll can force staff to overlap two sheets even when the roll has enough metres on paper. A wider roll can be wasteful when wrapping a small sandwich. Test the actual folding pattern before choosing a width.
| Hypothetical roll | Area per 9 m roll | 300 mm long cuts | Area per cut |
|---|---:|---:|---:|
| 300 mm wide | 2.70 m² | 30 | 0.090 m² |
| 350 mm wide | 3.15 m² | 30 | 0.105 m² |
| 450 mm wide | 4.05 m² | 30 | 0.135 m² |
These are geometry examples, not available Biolastic widths. The same 30 cuts do not mean the same material consumption or suitability.
A micron is one-thousandth of a millimetre. For a simple theoretical mass calculation, aluminium density can be approximated as 2,700 kg/m³. Actual alloy density, gauge variation and manufacturing tolerances can change measured results.
Theoretical aluminium mass (grams) = length (m) × width (m) × thickness (µm) × 2.7.
This works because the conversion from microns and kilograms to grams cancels conveniently. It excludes the core, box, adhesive or any other non-foil material.
| Hypothetical 9 m × 300 mm foil | Calculated net foil mass |
|---|---:|
| 9 µm | 65.61 g |
| 11 µm | 80.19 g |
| 12 µm | 87.48 g |
| 15 µm | 109.35 g |
The table is not a claim that any of these gauges is stocked. It illustrates why a scale reading for a boxed roll cannot establish foil thickness: the core and carton contribute weight. Ask for verified net foil weight and thickness rather than guessing from how heavy a retail roll feels.
Weigh several unopened units, then separately determine packaging and core weight using an agreed method. Compare measured net foil weight against the quoted tolerance. For critical purchasing, arrange a suitable gauge measurement rather than relying solely on mass; the same net mass can arise from different combinations of width, length and thickness.
Theoretical full sheets = floor(9,000 mm ÷ cut length in mm).
| Cut length | Maximum complete cuts | Unused nominal length |
|---|---:|---:|
| 200 mm | 45 | 0 mm |
| 250 mm | 36 | 0 mm |
| 300 mm | 30 | 0 mm |
| 350 mm | 25 | 250 mm |
| 400 mm | 22 | 200 mm |
| 450 mm | 20 | 0 mm |
| 500 mm | 18 | 0 mm |
| 600 mm | 15 | 0 mm |
These figures assume the entire nominal length is usable and ignore torn starts, uneven cutting and operator losses. If a food item needs two sheets, divide the number of accepted sheets by two to estimate complete packs. If staff use variable lengths, the theoretical table will overstate practical yield.
Run a short shift trial with real food and the intended dispenser. Record: sheet length, number of cuts, number of fully acceptable packages, torn or discarded sheets, time per package and any need for double wrapping. For a takeaway business, accepted wraps per roll is the denominator that matters.
Suppose a hypothetical roll has a delivered price of ₹54, and the kitchen obtains 28 accepted wraps. The material cost is:
₹54 ÷ 28 = ₹1.93 per accepted wrap, rounded.
A different hypothetical roll at ₹48 producing only 22 accepted wraps costs ₹2.18 per accepted wrap. The cheaper roll is more expensive in use.
Neither price is a Biolastic price. These numbers show the purchasing method.
Full cost per accepted package = (foil + additional packaging + packing labour + attributable waste + freight) ÷ accepted packages.
For bulk buying, request a quote showing the exact roll specification, carton quantity, freight destination, applicable taxes and lead time. Compare offers on a common specification, then repeat the accepted-wrap trial when the material changes.
Aluminium foil can be useful for covering and wrapping suitable foods, but it is not a universal barrier for every food and temperature. Consider the complete use case:
| Application | Question to settle before purchase |
|---|---|
| Dry or relatively dry food | Does the foil fold securely without tearing? |
| Oily takeaway food | Does the package hold during the expected journey? |
| Hot food | Is the exact foil grade suitable for the contact temperature and time? |
| Acidic or highly salted food | Is direct contact appropriate, or should another food-contact layer be used? |
| Refrigerated leftovers | Does the food chemistry and storage duration support the proposed contact? |
| Oven or grill use | Does the foil supplier approve the temperature and arrangement? |
| Microwave reheating | Follow appliance instructions; do not presume foil is microwave-safe |
The Saudi Food and Drug Authority cautions against using foil to preserve acidic or highly salty foods and against direct flame exposure. That guidance is a reason to check the food and intended use—not a claim that every brief contact with any salted food has identical risk.
Do not promise leakproof performance from foil alone. Folds can open, sharp food edges can puncture material and loose wraps may fail during delivery. If a meal contains liquid, a suitable container with a compatible lid may be more appropriate than foil as the sole primary package.
India's Food Safety and Standards (Packaging) Regulations, 2018 require suitable food-grade packaging for its intended application. The regulations' metal-material schedule includes IS 15392, covering aluminium and aluminium alloy bare foil for food packaging. Buyers should verify the applicable requirements for the exact supplied grade, not treat a product title as certification.
Check the FSSAI packaging regulations and amendment register, which lists an amendment dated 7 August 2026. Ask for appropriate documentation and current applicability rather than relying only on an older downloaded compendium.
Food-contact suitability depends on the destination market and the food type, time and temperature of contact. The US FDA's food types and conditions-of-use tables demonstrate why approval for one use cannot simply be generalized to another. These tables do not constitute an approval of Biolastic's roll.
For an international quotation, request material identification, intended-use declarations, relevant test reports, traceability and any market-specific compliance evidence. No export availability or destination-country certification is implied by this article.
A thicker foil will generally have more mass per unit area, but folding and tearing also depend on alloy, temper, surface defects, winding quality, cutter condition and the geometry of the packed food. A thick foil can still puncture against a sharp edge. A thin foil can work well in a carefully controlled low-stress wrap.
Set a simple acceptance trial: use the same food weight, same cut length, same operator instructions and same handling route. Note edge tears, pinholes, fold retention and any failures during delivery simulation. Do not publish a load-bearing or puncture-resistance claim without a defined test and supporting results.
A short roll can suit a small counter with a manual cutter. A high-volume operation may prefer a different roll length or dispenser arrangement—but changing format only makes sense if it improves accepted output and the supplier can support the required specification.
Ask whether the quote covers a retail carton, loose rolls, dispenser-ready packaging or a bulk reel. Confirm core dimensions, winding direction, cut quality, outer protection, rolls per carton and the expected storage conditions. Never assume that a quote for a 9 m retail format can be converted to a longer industrial roll at the same unit rate.
For a distributor, clear carton labels and consistent specification across deliveries matter as much as the appearance of an individual roll. Record lot details so complaints can be traced to a supplied batch.
A kitchen wraps 180 orders per day for 26 days: that is 4,680 accepted wraps per month. If a controlled trial yields 28 accepted wraps per roll, the mathematical minimum is ceil(4,680 ÷ 28) = 168 rolls.
If staff issue complete rolls independently to counters and cannot share remainders, actual issue quantity may be higher. Add a buffer only after examining variability, delivery lead time and the cost of running out. A buffer is a planning choice, not a guaranteed wastage percentage.
For Siliguri and North Bengal businesses, factor in the real delivery route, warehouse space and reorder frequency. For buyers elsewhere in India or overseas, confirm destination-specific freight and supply terms before using any unit-economics estimate.
1. Verify the quoted product. Confirm manufacturer, grade, width, length and micron; do not assume a branded equivalent.
2. Request food-contact documentation. Match the evidence to your food, contact duration, temperature and destination market.
3. Test one-sheet coverage. Pack the actual product; photograph the fold and note whether an overlap is necessary.
4. Measure accepted-wrap yield. Count usable wraps from the sample roll, not just theoretical cuts.
5. Check gauge and net mass. Agree tolerances and an incoming quality-control method.
6. Compare landed cost. Include carton packing, taxes, freight, labour and rejected wraps.
7. Approve a written reorder specification. Keep the trial result, reference sample and supplier quotation together.
A useful supplier should be able to answer these questions—or identify which details need checking—without substituting marketing language for measurements.
Biolastic lists a 9 Metre Aluminium Foil Roll for Food Wrapping for specification-based enquiries. To receive a meaningful response, send quantity, delivery city or country, intended food application, preferred width, required micron (if known), dispenser requirements and whether direct food contact is involved. Ask for current stock, carton count, food-contact documents, price, taxes, freight, MOQ and lead time.
Businesses in Siliguri, North Bengal and India, as well as international sourcing teams, can submit their requirements for review. A submitted enquiry is not a guarantee of stock, delivery coverage or export supply.
Enquire about 9 m aluminium foil rolls and request a wholesale specification
Divide 9,000 mm by the required cut length and round down. For 300 mm cuts, the theoretical maximum is 30 sheets, assuming all 9 metres are usable.
No. Width and foil thickness change the aluminium mass; the cardboard core and retail carton add gross weight.
The live product listing does not confirm foil thickness. Request the micron and tolerance for the actual quoted batch.
Avoid assuming compatibility. Acidic and heavily salted foods can interact with aluminium, especially over longer contact periods. Check the supplier's intended-use guidance and use a suitable alternative where needed.
Do not assume it is. Follow the appliance and foil manufacturer instructions; routine microwave use of aluminium foil is not recommended.
No brand equivalence or affiliation is claimed. Ask for the actual manufacturer and supplied specification.
Compare usable width, verified thickness, net foil weight, acceptable sheets per roll, carton quantity, food-contact documentation and delivered cost per accepted wrap.
Buyers can send a specification-based enquiry, but availability, shipping destinations, minimum quantities and delivery terms must be confirmed rather than assumed.
All price, gauge, width and usage examples are illustrative; they are not current Biolastic specifications, test results or quotations.
Divide 9,000 mm by the required cut length and round down. For 300 mm cuts, the theoretical maximum is 30 sheets, assuming all 9 metres are usable.
No. Width and foil thickness change the aluminium mass; the cardboard core and retail carton add gross weight.
The live product listing does not confirm foil thickness. Request the micron and tolerance for the actual quoted batch.
Avoid assuming compatibility. Acidic and heavily salted foods can interact with aluminium, especially over longer contact periods. Check the supplier's intended-use guidance and use a suitable alternative where needed.
Do not assume it is. Follow the appliance and foil manufacturer instructions; routine microwave use of aluminium foil is not recommended.
No brand equivalence or affiliation is claimed. Ask for the actual manufacturer and supplied specification.
Compare usable width, verified thickness, net foil weight, acceptable sheets per roll, carton quantity, food-contact documentation and delivered cost per accepted wrap.
Buyers can send a specification-based enquiry, but availability, shipping destinations, minimum quantities and delivery terms must be confirmed rather than assumed.
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