Three-side seal pouch is the most basic and common type of pouch in flexible packaging. It is favored because of its simple bag-making process, low cost, and wide applicability. Although it is not as convenient and eye-catching as some emerging bag types, its simple, reliable, and economical features make it still the preferred packaging solution for many products in the foreseeable future. Whether you are entering a supermarket or browsing an online store, it is one of the packaging forms you are most likely to encounter. When you need a reliable, economical, and practical packaging solution, the three-side sealed bag will be a good choice.
Advantages:
Economical and efficient: Among all the prefabricated bag types, its unit price is usually the lowest.
Highly versatile: It can be adapted to various sizes, shapes and thicknesses of products.
Mature technology: It has a fast production speed and stable quality.
Large brand display area: The flat front and back provide ample space for brand design and product information.
Limitations:
Unable to stand independently: Before the contents are removed, the bag cannot stand on its own. It may not be as convenient for display on the shelves as self-standing bags.
Dependent on the contents' shape: When empty, the bag is flat and its appearance is not sufficiently three-dimensional and full.
Average convenience: Usually, it needs to be torn open or opened with scissors. After sealing, it is difficult to reseal (unless additional zippers are added).
The choice of materials for three-side seal pouches is entirely dependent on the product requirements. Usually, a composite structure is used to combine various properties.
General purpose: BOPP/CPP, BOPP/VMCPP (coated aluminum), BOPP/VMPET/PE
Applications: Snacks, biscuits, candies, tea, small goods.
Need barrier properties: PET/AL/PE, PET/VMPET/PE, PA/PE
Applications: Coffee, milk powder, meat products, seasonings, medicines (requiring high oxygen and moisture barrier)
Need resistance to boiling: PET/AL/CPP, PA/AL/CPP
Applications: Sauces, dishes, pet food (can be sterilized at temperatures above 121°C)
Need transparency: BOPP/PP, OPP/PP
Applications: Products that need to display the contents, such as bread, sushi, vegetables, etc.
This is its largest application field. Such as potato chips, biscuits, pastries, candies, dried fruits, noodles, seasonings, coffee, tea, etc.
Packaging of granules, tablets and powders of medicines.
Laundry powder, sample of shampoo, wipes, cotton swabs, etc.
Packaging of small parts, dust-proof and moisture-proof.
Socks, underwear, textile accessories, etc.
