Three-Side Seal Pouches are a widely used basic bag type in the plastic flexible packaging industry, forming a complete packaging structure through three-side heat sealing. They have a flat appearance and neat seals, making them suitable for quantitative packaging of various solid, powder, or small-volume liquid contents. The production process involves roll film slitting, forming, and heat sealing to ensure seal integrity and bag surface flatness. Three-Side Seal Pouches can be made from a variety of film materials, including PET, PE, VMPET, and OPP, to meet the requirements of packaging appearance and barrier properties, depending on the product. They are commonly used in product packaging for food, daily chemicals, pharmaceuticals, agriculture, and industrial components. Their structure can be combined with conventional self-sealing zippers, pocket zippers, and Velcro zippers, and supports customized printing, size, material structure, and thickness adjustments, providing brands with a more flexible packaging experience in display and transportation. Due to mature production processes, these bags can be mass-produced on high-speed bag-making equipment, meeting the needs of enterprises for stable supply and cost optimization.

1. Economy:

Three-Side Seal Pouches reduce material usage with their simple three-side seal structure, reducing film consumption by approximately 15% to 25% compared to stand-up pouches, helping companies control packaging costs. Commonly used materials such as PET/PE or OPP/VMPET/PE offer good processing stability, maintaining a production speed of 200 to 300 pouches per minute on high-speed bag-making lines. Bag thickness is typically between 60 and 120 microns and can be adjusted according to different product densities, ensuring necessary packaging strength is maintained while saving costs.

2. Multiple Materials:

Three-Side Seal Pouches are available in various structures, including PET/PE, PET/VMPET/PE, OPP/VMPET/PE, and Paper/PET/PE, meeting the diverse needs of brands in terms of transparency, stiffness, and light-blocking properties. Metallized VMPET film offers high oxygen and water vapor barrier performance, with an OTR as low as 2cc/m²·24h and a WVTR as low as 2g/m²·24h, making it suitable for humidity-sensitive products. Different film layer thicknesses can be combined to meet functional requirements, ensuring the bag design combines aesthetics and protective capabilities.

3. Reliable Sealing:

The Three Side Seal Pouch's three-side heat-sealing technology is stable, achieving a uniform seal at heat-sealing temperatures ranging from 170 to 220 degrees Celsius. Seal widths can be as low as 6 to 10 millimeters, providing enhanced load-bearing safety. The commonly used inner PE layer boasts excellent heat-sealing performance, with a heat-sealing strength exceeding 30N/15mm, suitable for continuous operation on automated packaging lines, reducing bag breakage and leaks. The high degree of seal neatness helps maintain the bag's shape during transportation and placement.

4. Zipper Options:

The Three Side Seal Pouch can be equipped with standard zippers, pocket zippers, or Velcro zippers to enhance the opening and closing experience. Standard zippers are suitable for food and daily chemical products, maintaining structural stability even after over 100 opening and closing cycles. The Velcro structure maintains good engagement even at low temperatures, with common peel strengths ranging from 1.5 to 2.0N, facilitating reuse. The zipper material can be matched to the pH level of the contents and the packaging environment to ensure stability.

5. Printability-Friendly:

The Three Side Seal Pouch features a flat structure, ideal for large-area color printing. It typically uses gravure printing, achieving high-resolution graphics with up to 8 to 10 colors, high dot reproduction, and adjustable surface gloss or matte finishes according to brand positioning. Printing films such as PET offer good stiffness and scratch resistance, ensuring the design remains stable during transport. Finished product dimensional tolerances are typically controlled within ±2 mm, meeting high-standard brand packaging requirements.

1. Food Processing Plants:

Three-Side Seal Pouches are widely used in food processing plants for packaging snacks, small-packaged seasonings, baking ingredients, and other products. The flat structure facilitates batch stacking, improving warehousing efficiency. The PET/PE structure keeps the bag surface flat, making label and ingredient information easier to read. The tight seal helps ensure the contents remain stable and leak-proof during transportation, providing food companies with a suitable packaging solution for their production lines.

2. Daily Chemical Products Factories:

Three-Side Seal Pouches are suitable for packaging daily chemical products such as face masks, wet wipe refill packs, and small-volume laundry detergents. The flat bag surface allows for high-definition printing of brands, enhancing product display. Various material structures allow for different barrier properties to be selected based on ingredient characteristics, enabling daily chemical factories to quickly adjust packaging formats for different product categories. The bag shape is easy to form, helping to improve production line efficiency.

3. Agricultural Supplies Stores:

Agricultural supplies such as seeds, small bags of fertilizer, and plant nutrient granules often use Three-Side Seal Pouches for retail packaging. The three-side seal structure facilitates controlled and consistent weight, reducing packaging errors. VMPET or aluminum foil structures provide more stable light-blocking for photosensitive seeds, ensuring longer shelf life. The flat bag shape facilitates display and improves customer visibility.

4. Medical and Healthcare Companies:

Medical and healthcare companies commonly use Three Side Seal Pouches to package disposable supplies, powders, and reagent samples. The bag can use sterile-grade film combinations to ensure a tight seal. The three-side seal shape allows for quick passage through automated sorting equipment, improving overall packaging efficiency. The printed area clearly displays key information such as batch numbers and production dates, making medical supply packaging more standardized.

5. Industrial Parts Warehouses:

Small industrial parts such as screws, O-rings, and gaskets are suitable for packaging with Three Side Seal Pouches. The bag has stable strength, and thicker film materials can achieve better puncture resistance, making the transport of sharp metal parts safer. The regular three-side seal bag shape facilitates warehouse barcode scanning and supports transparent material combinations, allowing for quick identification of contents, reducing picking time, and improving operational efficiency.