What Is a Doypack? Complete Definition & Guide
What exactly is a doypack?
A doypack — also known as a stand-up pouch — is a flexible bag with a wide, sealed bottom that allows it to stand vertically on a store shelf without any support. French inventor Louis Doyen invented this format in 1963, and since the 1990s it has become one of the fastest-growing segments in the flexible packaging industry worldwide.
The key feature of a doypack is the so-called bottom gusset — a fold of material in the lower part of the pouch that unfolds when filled, creating a stable base. This allows the packaging to present itself on the shelf almost like a box but weighs up to 80% less than a rigid alternative.
Why did the doypack conquer the market?
The popularity of doypacks results from three advantages simultaneously:
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Shelf display — stands vertically, showcasing the front graphics
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Low weight and logistics cost — empty pouches are flat, so transporting raw materials takes a fraction of the space
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Closure versatility — zipper, dispenser, degassing valve, cap-spout — any closure can be integrated with a doypack
Doypack construction — packaging anatomy
A standard doypack consists of several structural elements. Understanding their role helps select the optimal format for a specific product.
Front and back panels
These are the two main planes of the pouch — the space for graphics, product information, barcodes, and manufacturer data. With digital printing, each panel can have a different design, allowing multiple flavor variants to be combined in a single production run.
Bottom gusset
A fold of material sealed in a "W" or "K" shape. When filled, it unfolds, creating a stable, flat base. The width of the bottom directly affects the pouch's capacity and stability.
Side and top seals
Thermal seals join the laminate layers. Their width (usually 5–10 mm) and strength determine the packaging's airtightness. During production, seals undergo tear tests and pressure tests.
Closures (optional)
| Closure Type | Application | Advantages |
|---|---|---|
| Zipper (reclosable) | Snacks, coffee, nuts | Multiple opening and closing |
| Degassing valve | Freshly roasted coffee | Releases CO₂ without letting oxygen in |
| Cap-spout | Sauces, beverages, smoothies | Precise liquid dispensing |
| Tear notch | Single-use sachets | Easy opening without scissors |
| Dispenser (pump) | Cosmetics, detergents | Controlled product amount |
Materials and laminate structures
A doypack is never single-layer. To provide appropriate barrier, mechanical, and graphic properties, multi-layer laminates of 2–4 layers are used. Each layer serves a different function.
Typical material structures
| Structure | Barrier | Typical Application |
|---|---|---|
| PET 12 / PE 80 | Basic | Dry products, short shelf life |
| PET 12 / ALU 7 / PE 80 | Maximum | Coffee, tea, supplements |
| PET 12 / metPET 12 / PE 80 | High | Snacks, nuts, dried fruits |
| OPP 20 / PE 60 | Basic | Frozen products, refrigerated items |
| PET 12 / Nylon 15 / PE 80 | High + puncture resistant | Sharp products, bones in pet food |
What do individual layers mean?
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PET (polyethylene terephthalate) — outer layer, provides stiffness, gloss, and excellent printability
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ALU (aluminum foil) — full barrier against light, oxygen, and moisture; used where maximum protection is needed
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metPET (metallized PET) — lighter and cheaper alternative to aluminum; provides high but not full barrier
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Nylon (polyamide PA) — increases puncture and tear resistance; crucial in wet pet food packaging
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PE (polyethylene) — inner layer (sealable), contacts the product; responsible for seal integrity
Eco-friendly and mono-material laminates
Growing emphasis on recycling is driving the market toward mono-PE and mono-PP laminates. In these structures, all layers are based on the same polymer, enabling recycling in a single stream. Paczki na Wymiar offers mono-PE doypacks with EVOH barrier that meet CEFLEX guidelines and prepare brands for PPWR Regulation requirements.
Doypack applications across industries
Doypack is a versatile format. Below are the most important industries and applications.
Food industry
This is the largest market for doypacks. Standing pouches are standard for:
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Coffee — doypack with degassing valve and zipper is the gold standard for specialty and premium coffee packaging
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Snacks — chips, nuts, dried fruits, granola — zipper doypack ensures freshness after opening
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Sauces and pastes — cap-spout allows convenient dispensing of ketchup, mayonnaise, or fruit mousse
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Pet food — puncture resistance (nylon) and high barrier (ALU) protect wet pet food
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Spices — small doypacks (50–100 g) with zipper, ideal for store shelves
Cosmetics industry
Doypacks with pump dispenser or cap-spout are replacing traditional bottles in the eco-refill segment. Consumers buy a rigid bottle once, then refill it from lightweight standing pouches — a plastic reduction of up to 70%.
Chemical industry
Detergents, laundry liquids, cleaning agents — wherever a refill pouch is cheaper and lighter than an HDPE bottle.
E-commerce and D2C
Brands selling direct-to-consumer increasingly choose doypack as shipping packaging. The lightweight format reduces courier costs, and 360° printing builds brand recognition the moment the package is opened. Read more about e-commerce packaging in our article on packaging for online sales.
Doypack vs. other packaging formats — comparison
Choosing a format is a compromise between cost, functionality, and shelf presentation. The table below compares doypack with the most popular alternatives.
| Feature | Doypack | Flat pillow bag | Glass jar | Metal can |
|---|---|---|---|---|
| Shelf stability | High | None | High | High |
| Packaging weight | Very low | Very low | High | Medium |
| Unit cost | Low | Lowest | High | Medium |
| Barrier (with ALU) | Excellent | Excellent | Excellent | Excellent |
| Reclosable | Yes (zipper) | No | Yes (cap) | No |
| Graphic surface area | Large (front + back) | Small | Small (label) | Medium |
| Recyclability | Growing (mono-PE) | Growing (mono-PE) | 100% | 100% |
| Empty transport cost | Very low | Very low | High | Medium |
When is doypack NOT the best choice?
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Premium products requiring "heavy" packaging perception — glass and metal build a sense of luxury
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Pressurized products — carbonated beverages require cans or PET bottles
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Very large volumes (>5 L) — bag-in-box is more ergonomic
Doypack production process at Paczki na Wymiar
Doypack production consists of several stages — from graphic design to finished packaging on a pallet.
1. Design and prepress
The client provides a graphic design or commissions it from our studio. The file is prepared for printing: color separation, trapping, cutting and sealing lines.
2. Printing
At Paczki na Wymiar, we use two technologies:
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Digital printing —, from 4,000 units, no plate costs, full CMYK + white background, personalization and SKU combining capability
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Rotogravure — intaglio printing, from 10,000–30,000 units, highest quality at large volumes, Pantone colors
3. Lamination
The printed film is laminated with barrier and sealing layers. We use solvent-free lamination, compliant with food safety standards.
4. Converting (pouch forming)
The finished laminate is cut and sealed into ready-to-use doypacks on automatic converting machines. At this stage, zippers, valves, and spouts are installed.
5. Quality control
Every batch undergoes visual inspection, seal integrity testing (vacuum decay), and seal strength testing. The Paczki na Wymiar facility holds BRC/IoP and ISO 9001 certifications.
How to order doypacks — practical tips
If you're planning to order printed doypacks, prepare the following information:
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Dimensions — width × height × bottom depth (e.g., 160 × 240 × 80 mm)
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Material — product type determines the laminate structure
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Closure — zipper, valve, cap-spout, tear notch
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Quantity — from 4,000 units in digital printing
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Graphic design — PDF/AI file at min. 300 dpi resolution
At Paczki na Wymiar, we offer full support — from material selection through design to production and delivery. Contact us for a quote tailored to your product.
Summary
Doypack is one of the most versatile solutions in the world of flexible packaging. It combines low cost, light weight, excellent shelf presentation, and wide personalization possibilities. It works in the food, cosmetics, chemical, and e-commerce industries.
Whether you're launching a new product on the market or looking for an alternative to more expensive rigid packaging — doypack is the format worth starting your analysis with.
Need doypacks with printing? Contact the Paczki na Wymiar team — we'll help you select the material, closure, and format perfectly matched to your product. Fill out the contact form and receive a quote within 24 hours.