The 3 Side Seal Flat Pouch is a basic bag structure widely used in the plastic flexible packaging industry. It is heat-sealed on three sides, maintaining a flat shape overall, and is suitable for individual packaging of various solid, powder, and granular products. It often uses a combination of materials such as PET, PE, OPP, VMPET, and paper-plastic composites. Through a rational structural design, the packaging exhibits stable performance during forming, filling, and sealing. Its simple layout provides companies with ample space for front and back displays during design and printing, allowing for the presentation of brand logos, graphics, ingredient information, and other content. The 3 Side Seal Flat Pouch is commonly used in automated or semi-automated packaging production lines because its bag shape is easy to manage, enabling rapid feeding and sealing.

1. Lightweight

The 3 Side Seal Flat Pouch utilizes a lightweight composite structure, with a common thickness ranging from 70μm to 120μm. This reduces material usage and overall cost while maintaining packaging strength. Its three-side sealing structure achieves a tensile strength of 18–22N at the seal, meeting industry requirements for strong seals in basic food and daily chemical packaging. Through a rational configuration of the PET/PE or PET/VMPET/PE lamination ratio, the bag exhibits stable folding resistance, making it suitable for high-frequency handling environments.

2. Diverse Materials

This 3 Side Seal Flat Pouch can be made from various composite materials such as PET/PE, OPP/VMPET/PE, Paper/PET/PE, and PET/AL/PE. The thickness and barrier layer structure can be adjusted according to product properties. The PET layer provides good stiffness, while the VMPET or aluminum foil layer controls oxygen permeability to below 0.5%, helping to extend the shelf life of the contents. This wide range of material choices allows companies to find suitable material structures for food, chemical, and agricultural products.

3. Cost-Friendly

The bag's simple structure requires no additional molds, reducing unit material input by approximately 15% to 35% compared to independently supported bags, offering a significant cost advantage for bulk buyers. The 3-Side Seal Flat Pouch facilitates stacking and transportation, reducing storage volume requirements. In terms of printing, the flat panel allows for 8-10 color printing, reducing color difference and scrap rates, and improving overall production efficiency.

4. Stable Sealing

The three-side sealing design ensures even stress distribution across the bag, achieving industry-recognized sealing performance when heat-sealing temperatures are controlled within the 160-190℃ range. Whether for powder, granules, or liquid samples, the structure remains stable during drop tests, meeting industry-standard 1-meter drop test requirements. With standard zippers, pocket zippers, or Velcro zippers, it provides a smooth and reusable opening experience.

5. Clear Appearance

The 3-Side Seal Flat Pouch provides ample space for graphic display, supporting large-format printing on both sides for a more focused brand message. High-transparency PET ensures clear product visibility, while the frosted finish gives the packaging a matte texture, suitable for high-end food and cosmetic packaging. Various printing processes can be customized to meet specific needs, including glossy lamination, matte lamination, and spot-light effects, enriching the overall look.

1. Supermarket Food Packaging Section

Seasonings, snacks, and nuts on supermarket shelves are often individually packaged in 3-Side Seal Flat Pouches due to their flat structure, which facilitates display. Barcodes and production information can be printed on the back of the pouch for easy scanning and management. The material can be adjusted according to the product's oil content and dryness to maintain a good appearance during display.

2. Pharmacy and Health Supplement Counters

Pharmacies commonly use this packaging to hold tablets, powders, and small-dose nutritional supplements. 3-Side Seal Flat Pouches keep the packaging clean and easy to store. By using high-barrier materials, the effects of light and oxygen are effectively reduced, making the contents more stable during transportation and storage. The overall shape also facilitates single-use.

3. Beauty Sample Section

Cosmetic samples such as face mask powder, trial powders, and disposable care products are typically packaged in this pouch type. 3-Side Seal Flat Pouches provide a neat display surface, enhancing visual appeal. Smaller packaging sizes enhance a brand's presentation in experiential products, providing users with more convenient trial packaging.

4. Pet Food Packaging Area

Pet food stores often use this bag type for small portions of freeze-dried foods, jerky, and similar products. The 3-Side Seal Flat Pouch can be customized with aluminum foil or VMPET structures to enhance moisture resistance and maintain stable flavor before opening. External printing can display nutritional information, making the product easier to identify quickly.

5. Accessories and Hardware Area

Electronic accessories, screws, washers, and other hardware items are typically packaged in this bag type for standardized packaging in stores. The dotted cut design of the 3-Side Seal Flat Pouch allows users to tear it open directly without additional tools. The transparent material helps customers quickly identify the contents, making it suitable for fast-selling scenarios in retail environments.