Dongguang County Sansheng Plastic Packaging Co., Ltd. is one of the leading manufacturers and suppliers of custom back sealing bag in China, featured by quality products and low price. If you're going to buy bulk durable custom back sealing bag, welcome to get quotation from our factory. We also accept customized orders.
Professionally customized back-seal bags, employing mature center-sealing technology, ensure a smooth and secure seal, with tight heat-pressing adhesion, preventing cracking and leakage. The bag body is made of thick, resilient material, tear-resistant and abrasion-resistant, with excellent load-bearing capacity, suitable for use throughout the entire process of warehousing, transportation, and retail. The excellent airtight structure effectively prevents moisture, dust, and oxidation, firmly protecting product quality and extending shelf life. We support personalized customization of size, color, logo, graphics, etc., offering diverse styles and flexible customization. Widely applicable to packaging of various products such as food, snacks, feed, chemical raw materials, and small commodities, these bags are well-made, cost-effective, and are the preferred packaging product for bulk packaging and brand display.
Core Product Structure and Differentiating Advantages
The core structure of this bag type is a vertically integrated heat-sealed back, using two mainstream sealing processes: professional fin seal and overlap seal. The top and bottom ends are independently sealed, with no side seams, presenting a neat pillow-like shape. Compared to ordinary packaging bags, back-sealing bags offer significant practical advantages:
Custom back-sealing bags have no seams on the front, allowing for a complete and refined full-print effect, maximizing brand visual appeal; their balanced overall structural design ensures excellent load-bearing capacity, making them suitable for packaging products of varying weights, including granules, powders, and blocks; they are perfectly compatible with various fully automated packaging equipment, offering strong mass production adaptability and effectively reducing packaging costs and improving shipping efficiency; they also support multi-functional customization, allowing for the addition of features such as easy-tear openings, hanging holes, windows, one-way vents, and sealing zippers, adapting to diverse usage scenarios.
Export-grade Custom Material Selection
All materials are food-grade and environmentally friendly, meeting European and American export testing standards. Materials can be precisely selected based on product characteristics, balancing protection and compliance. The transparent basic version uses PET/PE and OPP/CPP composite materials, possessing excellent moisture-proof, low-temperature resistance, and breakage-proof properties. Its transparent texture allows for a clear view of the product, making it widely suitable for packaging snacks, noodles, and dried goods. The high-barrier custom back-sealing bag uses a premium PET/AL/PE and PET/VMPET/PE composite structure, maximizing oxygen barrier, light protection, and freshness-locking performance. It effectively delays product oxidation and spoilage, making it a preferred material for coffee powder, dried nuts, pharmaceutical excipients, and precision consumables. The paper-plastic composite custom back-sealing bag uses high-quality kraft paper with a PE inner layer, combining environmental friendliness with sealing and moisture-proof capabilities. Its sophisticated appearance suits a premium packaging style and is often used for high-end teas, baked goods, and health foods. Standard custom thicknesses range from 50–160μm, which can be flexibly adjusted according to product net weight and warehousing and transportation requirements, ensuring packaging toughness and protection.
Food Industry (Main Application)
Suitable for snacks, nuts and candies, tea and coffee, instant rice and noodles, frozen foods, baked goods, and dried goods. Leveraging full-width printing, airtight sealing, and compatibility with automated packaging, it's ideal for long-term storage and export shipments of various food products.
Industrial, Pharmaceutical, and Agricultural Materials
Can encapsulate food additives, feed ingredients, desiccant granules, medical powders, and small chemical granules. The materials are compliant with regulations, and the seals are strong, meeting the protective storage needs of industrial consumables and pharmaceutical excipients.
Daily Chemical Industry
Primarily used for lightweight daily chemical products such as facial mask powders, fragrance sachets, bath salts, small toiletries, and bagged cleaning products. The flat and aesthetically pleasing design is suitable for sophisticated brand packaging.
Foreign Trade and Cross-Border Export
Suitable for cross-border e-commerce, export factories, and brand overseas packaging. All products comply with export standards and are compatible with multiple countries' access standards, making it a versatile flexible packaging option for export.
Overall, this customized back-seal bag boasts a neat design, excellent printing, stable sealing performance, high adaptability to automated mass production, and outstanding cost-effectiveness. It perfectly suits various needs, from domestic sales and supermarket brand displays to cross-border e-commerce orders. Supporting comprehensive personalization, it is compatible with the packaging of most bagged products, making it a worry-free, durable, and highly adaptable universal packaging style for all industries.
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