In flexible packaging, choosing the format matters as much as the material. The same product can look completely different on the shelf, run at a different speed on the filling line and offer a different user experience depending on its format. Here is a short comparison of the most common formats.
Doypack (Stand-up Pouch)
Stands upright on the shelf thanks to its bottom gusset. The front panel offers a large print area and can be enhanced with options such as a zipper, valve or tear notch.
Suitable for: Nuts, coffee, snacks, spices, pet food, detergents.
Flat Bottom Pouch
Has a box-like flat base and usually five print panels. It stands very firmly on the shelf and gives a premium look. Because it uses product volume efficiently, more products can be displayed in the same shelf space.
Suitable for: Specialty coffee, granola, premium pet food, specialty foods.
Quattro Seal
With all four vertical corners sealed, this format offers a sharp, stylish look. It keeps its shape when filled and allows printing on all four panels.
Suitable for: Coffee, tea, flour and baking products, premium dry foods.
Pillow Bag (Back Seal)
One of the most economical and fastest formats in flexible packaging. It is usually formed from roll film directly on the production line on vertical or horizontal form-fill-seal machines.
Suitable for: Crisps, biscuits, confectionery, frozen food, pasta.
Side Gusset Bag
Expands during filling thanks to its side gussets, so it carries more volume. Used in both retail and bulk packaging.
Suitable for: Coffee, tea, rice, pulses, bulk food packaging.
Quick comparison
| Format | Shelf impact | Cost | Line speed | Key advantage |
|---|---|---|---|---|
| Doypack | High | Medium | Medium | Stands upright + option variety |
| Flat bottom | Very high | High | Medium | Premium, box-like look |
| Quattro seal | High | Medium–High | Medium | Sharp shape, 4-panel print |
| Pillow | Medium | Low | High | Economy and speed |
| Side gusset | Medium | Low–Medium | Medium–High | Volume efficiency |
Questions to ask when deciding
- Will your product stand upright or lie flat on the shelf?
- Will you fill pre-made pouches, or use roll film on your own line?
- Will consumers want to reclose the pack?
- Is your priority unit cost or shelf appearance?
The answers to these questions often determine the format on their own. If you’re undecided, share your product and line details with us, and we’ll choose the right structure together. Get a quote →