A frozen prawn importer and a bakery both buy “food bags”, yet the right specification for each is almost nothing alike. Knowing how to choose food packaging bags means starting from the food and its journey, then working back to material, thickness and closure. The six steps below are the order we suggest buyers follow when they put together a spec sheet.
Step 1: Describe the food and where it travels
Write down three things. Is the product wet, oily, sharp or dry? Will it sit at room temperature, in a chiller or in a freezer? How long between packing and the end consumer? Fish with fins and bones needs puncture resistance. Bread needs breathability more than strength. Frozen vegetables need a film that stays flexible at low temperatures. These answers decide everything that follows.
Step 2: Pick the film
| Material | Feel and look | Typical food uses |
|---|---|---|
| HDPE | Thin, crisp, slightly hazy | Produce rolls, deli counters, bread |
| LDPE | Soft, clear, good sealing | Zipper bags, freezer bags, ice bags |
| LLDPE blends | Tough, stretchy, puncture resistant | Frozen seafood, meat, heavier portions |
| PA/PE laminate | Stiffer, strong oxygen barrier | Vacuum packing of meat and cheese |
If you are unsure between two options, ask for samples of both and run them on your own product. Real food behaves differently from a data sheet.
Step 3: Set the thickness
Thickness is quoted in microns or mil. Thicker is stronger but dearer, and over-specifying is one of the most common ways buyers overpay. A lighter film with a better resin blend often performs as well as a heavier one. Give your supplier the pack weight and the worst conditions the bag will face, and let them propose a gauge.
Step 4: Choose the closure
Open-top flat bags are sealed by heat or tied. Press-to-close zipper bags let shoppers reseal at home, and slider zipper bags are easier for children and older users. Rolls of perforated bags, such as produce bags on roll, suit self-service counters. The closure also affects line speed, so think about who is filling the bag.
Step 5: Get the food-contact wording right
Compliance wording on quotes and data sheets is often loose, and a vague claim will not satisfy an importer’s auditor. The accurate statement is that the resin complies with FDA 21 CFR 177.1520, the US regulation covering polyolefins in contact with food. For the food-contact items Hanpak supplies, that is the standard the resin meets. SGS test reports are available for many products, and where one is not on file, SGS testing can be arranged on your order. Ask for the report to name the exact material and colour you are buying.
Step 6: Agree print, packing and lead time
Decide if the bag should carry your brand, a barcode or storage advice printed on the bag. Confirm how many bags go in each inner pack and carton, and what the carton label must show. On timing, plan for 4 to 6 weeks for a first bag order and 3 to 4 weeks for repeats, counted from sample approval. MOQ is flexible and quoted per size and design.
If a bag will be filled by hand at speed, we usually suggest adding a small lip or a slight difference in panel length. It makes the mouth easier to find and open, and staff stop wasting bags that stick together. Mention it at the sampling stage, because it changes the cutting setup.
From the Hanpak team
Send us your food bag spec
Even a rough list of food type, pack weight and storage temperature is enough to start. We quote within 48 hours of receiving a spec. Please request a quote or samples online, or talk to us directly on WhatsApp.