Liquid / Doypack Packaging
Maximum protection and convenience—for liquid, pasty, and innovative products, in packaging that ensures safety and visual recognition.
Greater Water Vapor Impermeability
Increased Mechanical
Resistance (leakage,
splashing, etc.)
Liquid / Doypack Packaging
Liquid/Doypack Packaging – Advanced Solution for Liquid and Pasty Products
In the dynamic world of packaging, Doypack packaging has established itself as an extremely flexible and reliable solution for a wide range of products—from food and cosmetics to household chemicals. Our multilayer films are engineered to ensure safe and efficient use across various formats, including packaging for dressings, sauces, pasty products, energy gels, juices, wine, dietary supplements, and many other items.
The key advantage of Doypack packaging lies in its enhanced mechanical resistance. Thanks to advanced materials and modern lamination technology, this packaging offers reliable protection against leakage, splashing, and damage during storage, transport, and use. Whether the contents are pasty, liquid, or gel-like, Doypack pouches provide safe product storage and easy dispensing, reducing risks of product loss and contamination.
Another significant characteristic of this packaging is its greater water vapor impermeability. This feature is essential for preserving the freshness, texture, and nutritional value of packaged products, especially food items such as baby food, salad dressings, creamy spreads, and more. An effective barrier prevents the ingress of external moisture and maintains optimal conditions inside the packaging, extending shelf life and preserving original taste and aroma.
Doypack packaging is also known for its versatility. Thanks to its unique design and innovative materials, it can be used for packaging a broad range of products—from food, alcoholic and non-alcoholic beverages, to cosmetics and household chemicals. In addition, the large printable surface makes them ideal for high-quality branding and marketing presentation on store shelves. Attractive visual identity and practical use enhance the perceived value of your products and distinguish your brand in a crowded market.
Our research and development team is at your disposal to create the optimal solution tailored to your product’s specifications and market requirements. Whether your goal is safety, extended shelf life, or attractive presentation, Liquid/Doypack packaging delivers flexibility, protection, and market recognition for every product.
| Symbol | Meaning |
|---|---|
|
Greater water vapor impermeability |
|
Increased mechanical resistance (leakage, splashing, etc.) |
| Water Vapor Impermeability | Oxygen Impermeability | Aroma & Flavor Preservation | Mechanical Resistance | |
|---|---|---|---|---|
| PET / PE | 🟢🟢🟢 | 🟢 | 🟢 | 🟢🟢🟢 |
| PET / AL / PE | 🟢🟢🟢 | 🟢🟢 | 🟢🟢 | 🟢🟢🟢🟢 |
| PET / AL / PET / PE | 🟢🟢🟢🟢 | 🟢🟢🟢🟢 | 🟢🟢🟢🟢 | 🟢🟢🟢🟢 |
| 🟢 | Poor | 🟢🟢 | Moderate | 🟢🟢🟢 | Good | 🟢🟢🟢🟢 | Excellent | 🟢🟢🟢🟢🟢 | Outstanding |
Packaging for Liquid/Doypack Solutions – Technological and Market Advantages for Modern Liquid and Pasty Product Packaging
Specifics in Liquid/Doypack Packaging Production
Lamination of multilayer materials:
Production of Doypack packaging requires precise lamination of multilayer materials (e.g., PET/PE, PET/AL/PE, PET/AL/PET/PE) to achieve a combination of mechanical resistance, barrier properties, and chemical inertness. Lamination must be flawlessly executed to prevent delamination or the formation of microchannels through which moisture, gases, or aroma could pass.
Film thickness and uniformity control:
For Doypack packaging, it is essential that all layers have precisely defined and uniform thickness, enabling consistent resistance to pressure, drops, and shape retention during transport, filling, and use.
Bottom (gusset) forming and seam sealing:
A key feature of Doypack packaging is its self-standing bottom (“gusset”), which provides pouch stability. The sealing of seams must be strong and reliable to prevent leakage or splashing—requiring precise control of sealing parameters such as temperature, pressure, and dwell time.
Adaptability to automatic filling lines:
Doypack packaging must be compatible with modern automatic and semi-automatic fillers that require stable geometry, quick opening and sealing capability, and dimensional consistency for efficient packaging processes.
Options for functional add-ons:
Functional elements such as zip closures, valves, handles, or special dosing spouts are often integrated, requiring extra precision and additional processing stages.
Cleanliness and safety control:
Especially for food and pharmaceutical products, production is conducted in controlled environments (clean rooms), with strict monitoring of microbiological cleanliness, impermeability, and absence of contaminants.
Packaging Specifics by Product Group
Dressings, sauces, and spreads
This group of products requires packaging that provides a high level of protection against leakage and splashing, with excellent water vapor impermeability. PET/PE structures are suitable for most spreads and sauces due to good moisture barrier and excellent mechanical resistance, while variants with aluminum (PET/AL/PE or PET/AL/PET/PE) offer higher protection against oxidation—which is essential for products high in oils and sensitive aromas.
Pasty baby foods and functional supplements
Baby foods and dietary supplements require maximum safety and long-term quality. Here, excellent barrier against water vapor and oxygen is a priority, as well as complete preservation of taste and aroma. PET/AL/PET/PE structures provide perfect protection from external influences, prevent the ingress of moisture, oxygen, and odors, while being highly mechanically resistant—eliminating the risk of damage during transport or use.
Energy gels and sports supplements
These products are often viscous, sometimes containing aggressive ingredients or strong flavors. Packaging must ensure excellent mechanical resistance (to withstand squeezing, carrying in a pocket or bag, drops), as well as good water vapor impermeability to preserve texture and prevent drying out. The best choice is multilayer structures with aluminum and PET, which protect the product while also enabling practical dosing.
Juices, Beverages, and Wine
For these products, it is essential to combine a strong barrier against water vapor with moderate to excellent oxygen barrier, to prevent loss of freshness, flavor changes, and oxidation. For sensitive beverages—especially wines and natural juices—PET/AL/PE or PET/AL/PET/PE structures are recommended for their excellent resistance and preservation of all aromatic and nutritional properties.
Dried Fruit, Nuts, Spices, Coffee
Although these are low- or medium-moisture products, it is critical to prevent the ingress of external moisture, oxygen, and loss of aroma. PET/AL/PE structures ensure excellent impermeability to water vapor and oxygen, as well as complete preservation of flavor and aroma. Exceptional mechanical resistance protects the packaging during packing and transport.
Cosmetic Products and Household Chemicals
For this product group, materials resistant to chemical components, with high mechanical resistance (to prevent breakage or splashing), as well as good impermeability to vapor and aroma, are often required to prevent contamination or loss of functionality. Multilayer combinations with aluminum and multiple PET layers guarantee long-term stability and content protection.
Common Technological Features
- Increased mechanical resistance – All material combinations in the table (especially those with additional PET layers) provide resistance to pressure, drops, and abrasion during transport, storage, and daily use.
- Greater water vapor impermeability – All listed materials (especially those with aluminum) efficiently protect against external moisture and condensation, preserving original texture, consistency, and freshness.
- Aroma and flavor preservation – Multilayer structures, especially with aluminum, minimize loss and mixing of aromas—even for products with strong or sensitive aromatic profiles.
- Safety and functionality – Enable hermetic sealing, easy dosing, and complete protection without dripping or leakage.
Liquid/Doypack packaging represents the contemporary standard for packaging liquid and pasty products.
Thanks to the ideal combination of mechanical resistance and water vapor impermeability, it ensures quality preservation and extended shelf life for a wide variety of products—from food and beverages to cosmetics and household chemicals. Attractive, modern, and safe, this packaging enables brands to stand out on the market, ensure maximum functionality, and meet all consumer demands for safety, freshness, and convenience.