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Food-grade LDPE bags, with the paperwork to prove it

"Food grade" is a claim anyone can print on an invoice. What makes it real is virgin resin, a migration test to IS 9845, and a lot-linked test report you can hand an FSSAI inspector. We supply all three, every time.

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WHAT ACTUALLY MAKES A BAG FOOD GRADE
Four things, and you should ask for all four in writing
  • Virgin resin only. No recycled content, no reprocessed scrap, no mystery filler. Recycled film cannot be certified for direct food contact because nobody can vouch for what the previous life of that plastic was.
  • Migration testing to IS 9845 (the Indian standard for migration of constituents from plastics in contact with food), read alongside IS 10146 for polyethylene in contact with foodstuffs.
  • Food-safe ink, printed on the outside surface only. Ink never touches the product.
  • A test report tied to your lot number, not a generic certificate from three years ago. That is the document that survives an audit.

Food-grade bag specifications

Thickness25 to 100 micron. Bread and bun bags run 30 to 40, produce 25 to 40, frozen and heavy packs 60 to 100
MaterialVirgin food-grade LDPE and LDPE-LLDPE blends. No recycled content, ever, on a food-grade order
TestingOverall migration and heavy-metal checks to IS 9845. Report references your lot number
FormatsFlat bags, gusseted bags, bread bags with fold-over lip, pouches, roll bags on a core, liners
PrintFlexo up to 4 colours, food-safe inks, outside surface only. FSSAI logo and label panel if you supply artwork
PerforationMicro-perforation for produce and bakery breathability, or plain for moisture retention
MOQ100 kg plain, 200 to 300 kg printed, per size
HSN / GSTHSN 3923 21, GST 18%

Ask any supplier this one question: "will the test report carry my lot number?" A generic certificate proves the factory once tested something. A lot-linked report proves your bags were made from the material that passed. That is what an FSSAI or customer audit is looking for.

Is LDPE safe for food? The straight answer

Yes, and it is one of the most widely used food-contact plastics in the world. LDPE is resin code 4. It contains no plasticisers and no BPA, and it is chemically stable at the temperatures food packaging normally sees.

The nuance that matters for a buyer is temperature. LDPE softens around 100 to 110 degrees Celsius and melts around 110 to 120. So:

  • Cold and ambient: fine. Bread, produce, dry goods, sweets, frozen storage down to minus 40 for short periods.
  • Warm fill: ask first. If you are dropping hot product straight into the bag, tell us the fill temperature. Above roughly 80 degrees you want a different structure, and we will say so.
  • Microwave and boil-in-bag: not LDPE. That is a PP or laminate job. We will tell you that rather than sell you a bag that fails.

Where "food grade" quietly stops being food grade

The three ways we see it go wrong in the market: a supplier blends in 10 or 20 percent recycled material to hit a price, ink migrates because it was printed on the wrong side, or the bags were fine but were stored next to solvents in a dusty godown. The first is fraud, the second is ignorance, the third is housekeeping. We run food-grade lots on clean line changeovers and pack them sealed, so nothing rides along.

Our buyer asked for a food-grade certificate and the supplier sent a scanned PDF with no batch number on it. Is that valid?
PARAPHRASED FROM A PACKAGING BUYER FORUM

No, it is not. And that gap is exactly why we tie reports to lots.

Who we make food-grade bags for

Bakeries
Bread and bun bags in 30 to 40 micron with a fold-over lip, printed or plain. Micro-perf option to stop crust sweat.
Dairies
Milk pouch film and curd or paneer packing. Consistent gauge for form-fill-seal lines. Pouch film →
Fruit and veg packers
Micro-perforated produce bags that let the pack breathe, so greens do not rot in transit.
Sweet and snack makers
Clear bags that show the product, plus liners for tins and cartons. Grease-resistant options on request.

How a food-grade order runs through our factory

The point of this list is that food-grade is a process, not a label. Here is ours, in order.

01
Resin in, documented
We buy virgin food-grade LDPE from named suppliers and keep the resin batch record. If a question comes up in eight months, we can trace your bags back to the granule lot.
02
Clean changeover
The line is purged before a food-grade run. No coloured masterbatch or recycled material from the previous job carries into your film.
03
Extrusion with gauge control
Blown film with gauge checks across the web. Consistent thickness is what makes seals reliable, and seals are what keep contamination out.
04
Print on the outside only
Food-safe inks, non-contact surface, cured properly. If artwork places ink where the food touches, we push back before we print, not after.
05
Migration test and report
Sample pulled from your lot, tested to IS 9845, report issued with your lot number on it. Copy travels with the delivery and stays on our file.
06
Sealed packing
Bags packed in sealed liners inside cartons or bales, labelled with product, size, micron and lot. Nothing rides in loose.

Related reading

Food packaging industry page
Bakery, dairy, produce and frozen: what spec each one lands on and why.
Quality and specs
Gauge tolerance, seal strength and the test reports we issue per lot.
What is LDPE?
Full form, structure and the properties that make it a food-contact standard.

Food-grade LDPE questions

Get a food-grade bag quote

Tell us the food, the size, the micron and whether you need the test report on file for an audit. If you are not sure about micron, describe the product weight and we will spec it. Firm price in one working day.