Three side sealed bag (3 side seal bag) is a common form of plastic packaging, which is characterised by sealing both sides and the bottom three sides of the packaging material through heat sealing technology, while the top is usually retained as an opening or designed with an easy-to-tear opening in order to facilitate the opening of the consumer. This kind of packaging structure is simple and practical, widely used in food, medicine, chemical, electronic products and other fields. Three side sealed bag has the following features:
- Good sealing: through the high temperature heat sealing technology, the three-side sealed bag can effectively isolate air, moisture and light, maintain the freshness of the product and extend the shelf life, especially suitable for products with high sealing requirements.
- Good display effect: Due to its flat front design, it can provide a large printing area, which is conducive to the display of product information and brand promotion, and enhance the visual appeal of the goods.
- cost-effective: compared with other complex structure of the packaging, the production process of the three side sealed bag is simple, the use of materials economic, can effectively reduce packaging costs.
- Diversity: Different materials (such as PE, PET, CPP, etc.) can be selected according to the needs of different products, as well as a variety of surface treatments, such as transparent, aluminium plating, matte, etc., in order to meet the packaging requirements of different products.
- Convenient to carry and store: lightweight and occupies little space, which is extremely convenient for both manufacturers‘ warehousing and consumers’ carrying.
