Functional Bags

Yun Sealoong supplies custom functional bags for applications that need more than basic packaging. This collection covers anti-static ESD shielding bags, smell-proof mylar bags, child-resistant pouches, spout pouches for liquids, shaped die-cut bags, and moisture barrier bags (MBB), serving electronics, supplements, pet food, and specialty food brands.
Each structure is engineered for its function: PET/AL/PE and metallized shielding films for static-sensitive electronics, high-barrier foil laminations with odor control for smell-proof storage, child-resistant zippers for supplements and edibles, and puncture-resistant PA/PE for heavy or sharp contents.
All bags are made to order with OEM/ODM support: custom sizes and shapes, gravure printing up to 9 colors, matte, glossy, holographic, or spot UV finishes, and add-ons such as resealable ziplocks, spouts and caps, tear notches, degassing valves, and hang holes. Small-batch and bulk production are both available.
Our own manufacturing facility, running since 2012, combines electronic-shaft printing, dry and solvent-free lamination, and precision bag-making under IQC, IPQC, and FQC quality control. The factory is ISO certified, food-contact materials are FDA-compliant, products carry CE certification, and barrier performance is validated by SGS OTR/WVTR testing.
MOQ is flexible based on structure and printing. Describe your product, its sensitivity to static, odor, or moisture, and your target quantity, and we will recommend a functional bag structure with a quotation. Browse below or contact us to begin.