As shown in the image above, this is a stand-up doypack featuring a high-performance airtight zipper with a capacity of 1.5 kilograms. This doypack structure is a premier choice for premium pet food packaging. Taking the JISHENGBANG poodle food packaging scenario as a reference, its core advantages in the retail market are as follows:
- Superior Shelf Stability: The reinforced bottom gusset provides excellent upright support even under the 1.5kg weight, ensuring a premium “stand-up” effect on the shelf.
- Maximized Brand Visibility: The large front and back panels offer expansive printable surfaces for high-definition graphics, effectively communicating brand value to pet owners.
- Enhanced Preservation: Equipped with a reclosable airtight zipper, it ensures the kibble remains crunchy and fresh by preventing moisture and oxidation after the initial opening.
In this post, we will provide a technical breakdown of the exact laminate structure used in these 1.5kg premium pet food pouches. We hope this analysis provides valuable insights for your own packaging strategic planning.
Now, let’s take a closer look at the specific features and material layers of this 1.5kg pet food pouch.
Packaging Foil Materials
The illustration below outlines the multi-layer laminate structure engineered for this 1.5kg stand-up dog food doypack.
PET film, sometimes BOPET film, is one of the most commonly used print substrates in flexible packaging area. It is of great printability, mechanical strength, processing stability, high temperature resistance and grease resistance.
PET film, or polyethylene terephthalate film, is a thermoplastic polymer resin that is a type of plastic film. It is a versatile material with many uses due to its physical, mechanical, optical, thermal, electrical, and chemical properties. PET film is available in various thicknesses, widths, and transparencies.
Aluminum Film
Aluminum foil is a thin, pliable sheet of aluminum alloy that is often used for wrapping and covering food during cooking. It is made by rolling large slabs of aluminum until they are less than 0.2 millimeters thick, and then solidifying the molten alloy between water-cooled rollers. During the final rolling process, two layers of foil are passed through the mill at the same time, resulting in one shiny side and one dull side.
LDPE Film
LDPE, or low-density polyethylene, is a thermoplastic polymer that is a member of the polyethylene family of plastics. It is known for its flexibility, toughness, transparency, and corrosion resistance. LDPE is also lightweight, easy to fabricate, and has good chemical and impact resistance. It is often used for manufacturing plastic goods like cling wrap, juice containers, orthotics, and prosthetics.
Stable Stand-Up Performance
You can observe the superior stiffness and rock-solid standing stability of this 1.5kg pouch in the video below.
High-Definition Matte Printing Effect
To achieve the elegant and non-reflective appearance of this 1.5kg gold-themed dog food bag, a specialized matte lacquer coating is applied to the outermost layer of the film laminate. In the traditional industry process, large-area solid colors (especially gold or silver) often suffer from “bright lines” or “scuff marks” due to uneven tension or mechanical friction.
Through our refined coating technology and precision tension control, we have successfully eliminated these common surface defects. Our improved process delivers a consistently smooth, premium matte texture that is completely free of hidden lines and scratches—ensuring the brand’s premium image is maintained while providing excellent slip properties for high-speed filling at the customer’s facility.
Superior Airtight Seal
In the competitive pet food market, freshness is the ultimate guarantee of quality. Our dog food packaging features a professional-grade Press-to-Close Zipper (also known as a PE Resealable Zipper), specifically designed to provide a high-barrier, airtight environment.
Key Advantages:
- Optimal Freshness Retention: The airtight seal effectively prevents oxygen and moisture from entering the bag, which protects the dog food from oxidation and mold, ensuring the kibble stays crunchy and nutritious for longer.
- User-Centric Design: Equipped with a convenient Tear Notch, the consumer can easily open the heat-sealed top without tools. The “Zip to Close” function allows for repeated opening and closing throughout the product’s lifespan.
- Odor Containment: The precision-engineered interlocking tracks lock the strong smell of pet food inside the bag, keeping the consumer’s storage area or kitchen smelling fresh.
- Tamper-Evident Security: The initial heat seal above the zipper ensures that the product remains untouched from your factory to the customer’s hands.
To demonstrate the exceptional reliability of our Press-to-Close Zipper, we conducted a rigorous airtightness test.
Mechanical Property
This reinforced laminated foil is achieved with great mechanical strength, with some standard items as below.
- Tensile Strength
- Sealing Strength
- Anti-puncture Strength
- Burst Impact Strength
- Anti-pressure Property
Barrier Performance
Usually, the barrier performance of a multi-material laminate is evaluated by WVTR (short for water vapor transmission rate) and OTR (Oxygen Transmission Rate). The below table shows the typical value of the WVTR and OTR of the most common substrate films in flexible packaging.
More Sustainable Materials Options
As plastic pollution continues to intensify, an increasing number of brands are actively seeking more sustainable packaging solutions, such as compostable packaging, recyclable mono-material packaging, and plant-based material packaging. These alternatives have proven to be significantly more eco-friendly than traditional multi-layer packaging, which is often extremely difficult to recycle.
Home compostable film material packages
Our company has developed multi-layer foil stand-up pouches that are compostable under both home/garden and commercial composting conditions.
For this test, I will bury the pouches directly in natural soil, where the composting process is expected to take longer. This is because factors such as microbial density, moisture levels, and temperature play a critical role in the composting rate.
We will closely monitor the composting progress throughout the test period and will keep you regularly updated with our observations and results.
Mono Materials Recyclable Pouch Packages
Mono-material pouch packaging is truly recyclable because it can be easily reprocessed into plastic granules and used again for new applications.
In contrast, traditional multi-layer laminates , for example PET/LDPE structures , are difficult to recycle. PET and LDPE are completely different materials and cannot be melted or reprocessed under the same conditions, which makes separation costly and inefficient. This is the key reason why mono-material pouch formats are gaining strong traction in the packaging industry and earning a positive reputation among consumers.
Currently, mono-material pouches are mainly available in two material directions: polyethylene (PE) and polypropylene (PP). Among them, the PE-based structure is the most widely adopted, as it can be converted into a variety of stand-up pouch formats with high mechanical strength, excellent sealing performance, and good overall barrier protection.
Hope you found this helpful! If you’re looking to upgrade your product packaging, feel free to reach out to us anytime—we’re ready to help your brand stand out!
