SOS paper bags (also known as "Self-Opening Sack", self-opening paper bags) can stand upright naturally and be filled quickly due to their pre-folded opening and square bottom design. They significantly improve packaging efficiency in high-frequency usage scenarios such as breakfast shops, cafes, and bakeries. The current mainstream material in the market is white kraft paper (45-120g /m²), which takes into account both printing clarity and load-bearing capacity, and complies with food contact safety standards such as FSC certification.
SOS (Side-Opening Square-bottom) refers to a structure with side opening and square bottom, which combines load-bearing capacity and standing stability. It is widely used for packaging lightweight foods such as bread, sushi, salads, and popcorn. The current mainstream material in the market is white kraft paper, which meets food contact safety standards. With its elegant appearance and easy printing features, it has become a high-frequency choice for catering brands, baking studios and cultural and creative gift merchants.
Core advantage
Food grade safety and reliability: The use of food grade white kraft paper + wax coating or coating technology, oil and moisture proof, through the national food packaging safety certification.
Minimalist and versatile, brand-friendly: Pure white base color + matte texture, suitable for gilding, silk-screen printing, and flexographic full-page printing, easily carrying logos and slogans.
Small size, precise fit: Specially designed for toast, sandwiches, small desserts, pharmacy prescription bags, etc., without wasting space.
Environmentally friendly and degradable, responding to ESG trend: Most products are labeled with "biodegradable" and "compostable", which meets the consumption preferences of Generation Z and the requirements of green label of the platform.
Application scenario
Catering/Baking: Western bread, breakfast sandwiches, hamburgers, fried dough sticks, popcorn, chestnuts and other dry/low-oil food packaging
Retail/Fast-Moving Consumer Goods: Snacks, stationery, accessories, cosmetic samples, tea packages
Gifts/Events: Souvenirs, trade fair gifts, festival gift packs, wedding return gifts
Office/Life: Document and bill storage, manual material sorting, household dry goods storage