Congratulations! In March 2026, Longine successfully provided a customized packaging solution for a Belgian natural pet treat brand. The client launched a new line of dog training treats featuring single-source animal protein formulas, such as lamb and chicken, targeting the mid-to-high-end pet product market in Europe. After comparing multiple suppliers, testing samples, and evaluating production capabilities, the client ultimately chose to partner with Longine to jointly complete the packaging development for the bags of dog food.

Client Background and Packaging Requirements
This client has long specialized in the research and development of natural pet snacks and sought to further reinforce the product’s healthy, natural brand image through packaging. During the new product development phase, the client prioritized packaging functionality and in-store display appeal, planning to customize 150g and 300g packaging sizes for two product lines: lamb training treats and chicken training treats.
During the consultation process, the client outlined the following specific requirements:
- The bags of dog food design must reflect the brand’s natural and minimalist style;
- The product must be directly visible to consumers through the packaging;
- The packaging must offer excellent moisture resistance;
- It must support multiple openings and resealing;
- It must be suitable for display on European retail shelves;
- It must ensure stable and clear printing results.
Since the products are high-protein pet treats, the client placed particular emphasis on the dog food packaging bag’s sealing performance, hoping to maintain the product’s flavor and quality even after opening, thereby enhancing the overall user experience.
Custom Kraft Paper Stand-Up Zipper Pouch Solution
In response to the client’s requirements, Longine’s technical team recommended a kraft paper composite structure with high-barrier materials and designed a stand-up zipper pouch format.
The front of the bags of dog food features a natural kraft paper finish, printed with the brand’s signature colors to highlight the product’s natural ingredients.
To build consumer trust at the point of purchase, the packaging includes a transparent window, allowing consumers to directly view the product’s shape and color.
The final packaging specifications include:
- Food-grade kraft paper composite material;
- Stand-up bottom structure;
- Re-sealable zipper;
- Transparent display window;
- High-definition flexographic printing;
- Heat-sealed reinforced edges.
Prior to mass production, both parties conducted two rounds of color proofing and three rounds of sample testing to ensure the printed results aligned with the brand’s visual identity.
Successful Delivery of the First Batch of 30,000 Bags of Dog Food
After the design was finalized, the client placed an order for the first batch of 30,000 dog food packaging bags.
During production, each batch underwent dimensional inspection, seal strength testing, zipper opening/closing tests, and print quality inspection.
The entire project, from packaging structure confirmation and sample review to the completion of mass production, took approximately 23 days.
To facilitate the client’s phased market launch, the dog food packaging bags were packaged and shipped separately by product series, ensuring they could be directly integrated into the client’s filling production process.

Post-Launch Market Feedback
After the new product entered the European market, the client provided positive feedback on the packaging performance.
Particularly effective results were achieved in the following areas:
- The kraft paper appearance aligns with the natural pet food positioning;
- The transparent window enhances consumer confidence in purchasing;
- The zipper structure facilitates repeated access;
- The packaging maintains good rigidity, ensuring stable shelf display;
- High color fidelity in printing significantly enhances brand recognition.
As sales of the new product grew, the client subsequently added development plans for multiple additional packaging sizes and gradually expanded the application to cat treats and freeze dried pet food lines.
For pet treat brands, packaging not only serves to protect the product but also directly influences consumers’ first impression of product quality. Longine continues to provide professional, customized packaging solutions for global pet food and pet treat companies, helping brands create packaging products that combine functionality with market competitiveness.