Published October 19, 2026

9 Pouch Types Explained: How to Choose the Right Bag Format

Choosing a pouch format is a decision you make once and live with for years. It fixes your shelf footprint, the filling machine you need and your freight cost per unit — and, more than most buyers expect, the price of the bag itself. Below are the nine formats we build: what each one is genuinely good at, and where it will let you down.

1. Three-side seal pouch

Two flat films sealed on three sides; you fill through the fourth and close it. It is the cheapest format to make and the fastest to tool up. Because empty bags lie perfectly flat you also fit far more of them into a carton, so it often wins on landed cost before you even compare unit prices.

• Best for: single-serve sachets, samples, tablets and capsules, flat items such as sheet masks and wipes
• Typical build: 50–120 micron · BOPP/CPP, PET/PE or PET/VMPET/PE · up to 10-colour rotogravure
• Watch out: it cannot stand up. If the pack has to sell itself on a shelf, start somewhere else

2. Four-side seal pouch

All four edges are sealed, giving a perfectly rectangular pouch with no fin and no fold. It uses a little more film than a three-side seal, so unit cost is slightly higher. Buyers choose it when the pack must lie dead flat, when artwork has to run edge to edge, or when a tear notch has to sit on a precise corner.

• Best for: wet wipes, sheet masks, pharmaceutical and veterinary doses, powdered products
• Typical build: 60–140 micron · PET/PE or PET/AL/PE · tear notch, laser score, rounded corners
• Watch out: the open mouth is narrower than a gusseted format, which slows down hand-filling lines

3. Eight-side seal pouch (flat bottom / box pouch)

Five printable panels — front, back, two side gussets and a flat base — held together by eight sealed edges. It stands like a carton, stacks like a carton and carries a design right around the pack. This is the format to use when the bag itself is the advertising.

• Best for: coffee beans, pet food, tea, cereal, premium dry goods, gift SKUs
• Typical build: 120–200 micron · PET/AL/PE, kraft/AL/PE or matte BOPP/VMPET/PE · zipper, one-way degassing valve, tin-tie
• Watch out: the most expensive of the nine, and the worst bags-per-carton ratio — you pay for the shape in freight too

4. Stand-up pouch (Doypack)

A bottom gusset folds inwards so the filled bag stands upright on its own. It gives you most of the shelf presence of a box pouch at roughly half the cost, which is exactly why it became the worldwide default for dry food.

• Best for: nuts, dried fruit, snacks, spices, powders, pet treats
• Typical build: 80–180 micron · PET/VMPET/PE or PET/AL/PE · zipper, valve, clear window, hang hole
• Watch out: stability depends on the fill. A tall, narrow bag holding a light product will lean — ask us for the gusset depth that matches your fill weight

5. Zipper pouch

Strictly speaking a zipper is a closure, not a shape: it can be added to a three-side seal, a Doypack or a box pouch. We list it separately because it is what buyers actually search for. Press-to-close turns a single-use pack into a resealable one, which is often the difference between a product that gets finished and one that goes stale.

• Best for: anything consumed over several days — snacks, coffee, pet food, dried fruit, detergent powder
• Typical build: press-to-close, slider or hook-and-loop zipper · fits almost any format above
• Watch out: zipper alignment. A cheap application leaves the two tracks offset and the bag simply will not seal — always approve a sealed sample before mass production

6. Back-seal pouch (centre seal / pillow pouch)

The film is formed into a tube and sealed down the back with a fin, then closed top and bottom. The front panel has no seal at all, so artwork runs uninterrupted — and it runs on standard vertical form-fill-seal machines, the fastest filling method there is.

• Best for: crisps and extruded snacks, confectionery, rice and grains, frozen vegetables
• Typical build: 50–120 micron · BOPP/CPP or PET/PE · fin seal or lap seal down the back
• Watch out: the back fin is a thick four-layer join. On high-barrier foil structures it is the most common place for a seal to fail

7. Side-gusset pouch

Gussets run down the two side panels so the bag expands into a block when filled. The bottom is still a simple seal — that is the key difference from a Doypack: a side-gusset bag will not stand up on its own. It is the classic coffee and flour bag, and it costs noticeably less than a box pouch.

• Best for: coffee, flour, rice, sugar, animal feed, granular products from 250 g to 5 kg
• Typical build: 80–160 micron · PET/PE, PET/AL/PE or kraft/AL/PE · tin-tie, valve, folded top with hang hole
• Watch out: it needs shelf support or a display tray. If your plan is put it on the shelf and walk away, choose a Doypack or a box pouch instead

8. Shaped pouch (die-cut)

The pouch is cut to a custom outline instead of a rectangle — a bottle silhouette, an animal, a logo edge. It is the strongest differentiation tool on a crowded shelf, but it needs a dedicated steel die, and the shape has to be engineered: sharp internal corners concentrate stress and turn into leak paths.

• Best for: children’s products, seasonal and promotional SKUs, pet treats, gift and sample packs
• Typical build: 100–180 micron · any structure listed above · custom steel die, rounded internal corners as standard practice
• Watch out: budget for a one-off tooling charge, a longer first order, and a higher minimum quantity than a rectangular pouch

9. Spout pouch

A welded spout and screw cap turn a flexible pouch into a pourable, reclosable container. It replaces rigid bottles at a fraction of the weight and freight cost, which is why refill formats have moved to it so quickly.

• Best for: juice and puree, edible oil, sauce and paste, detergent refills, liquid supplements
• Typical build: 100–200 micron · PET/NY/PE or PET/AL/PE · spout diameters from about 8 mm to 33 mm, with child-resistant and tamper-evident caps available
• Watch out: the spout weld fails before the film does. Specify a drop test and a seal-strength test at your fill weight and temperature before you commit

How to choose in one pass

• It has to stand on a shelf → stand-up pouch or eight-side seal pouch
• Lowest possible unit cost → three-side seal or back-seal pouch
• The customer opens it more than once → add a zipper, or use a spout pouch
• It is a liquid, paste or gel → spout pouch
• Premium or gift positioning → eight-side seal pouch or shaped pouch
• You already run a vertical form-fill-seal line → back-seal pillow pouch
• 1 kg and above of a granular product → side-gusset pouch

What we need from you to quote

Four numbers and one photo are enough to start: bag size (width × height, plus gusset if any), fill weight per bag, the market you are selling into, and your target quantity. Add a photo of what you use today and we will come back with a film structure proposal, a sampling plan and a firm price — including an honest answer about what we would leave exactly as it is.