Butterfly Valve Bag-in-Box for Sterile Mineral Water and Liquid Food Filling

This butterfly valve bag-in-box is built for sealed filling and long-distance transport of liquid foods. The bag uses a four-side-sealed or pillow-style seal, with a strong heat-sealed fitment area that pairs with corrugated cartons or reusable plastic crates to form a complete BIB system. The butterfly valve opens and closes smoothly and cuts off cleanly, so dispensing stays drip-free and stacked pallets remain easy to handle. Transparent film lets users check fill level and product condition at a glance.

Food-grade PE is the main material, and it can be laminated with PET, NY or aluminium foil to build multilayer structures that balance oxygen barrier, light protection and flex resistance for ambient or chilled storage. Printing runs on 1-8 colour gravure presses, allowing custom logos, artwork, size markings and multilingual text with saturated colour and stable registration. Common capacities span 1L to 20L, and bag dimensions, valve diameter and film thickness can be adjusted to your liquid density and fill volume.

Typical uses include baby and mother mineral water, juice drinks, concentrates, edible oil, soy sauce and vinegar, and dairy liquids, as well as bottled water delivery and foodservice supply chains. We start from your sample or artwork, confirm structure and print file, then move to sampling and bulk production. Our plant sits in Dongguan, Guangdong, with a Class 10000 clean workshop, an MOQ of 10,000 pcs, and matching roll film available for continuous filling lines.