Our high barrier inner liner bags are engineered specifically for goods that demand strict protection against moisture, oxidation and gas penetration. Built with premium barrier composite materials, these liners deliver far tighter sealing and overall protection than regular plain PE inner bags. They're widely adopted across fine chemical, food, pharmaceutical and electronics industries, ideal for long-term material storage and long-distance cross-border transit.
We offer a full range of common specifications to fit diverse packaging needs. Thickness options cover 0.08mm to 0.20mm. Standard widths run from 30cm to 120cm, with lengths ranging 50cm to 200cm. We carry multiple bag styles including flat-top, round-bottom, square-bottom and folded-edge types for different loading and packaging habits.
The multi-layer composite construction is the core advantage of these liners. It works extremely well at blocking moisture, oxygen, odor and UV rays from penetrating the bag. This stops stored materials from caking, oxidizing, spoiling or absorbing strange odors - problems that commonly happen with standard single-layer PE liners. Every bag features strong heat-seal strength, creating a solid, clean and fully enclosed seal. This not only prevents fine powder and particle leakage, but also keeps external dust, insects and other contaminants away from your materials.
Tough and durable by design, the material comes with great tensile strength and abrasion resistance. It holds up well during frequent loading, unloading, stacking and long-haul shipping, greatly lowering the risk of bag damage and ensuring safe transit. These liners work seamlessly with all common outer packaging solutions, including woven sacks, FIBC ton bags, cartons, chemical drums and paper-plastic composite bags. Easy to fit and install, they deliver full-range internal protection with simple one-step operation.
They're highly versatile for different industries, perfect for exporting fine chemical powders, food and agricultural goods, pharmaceutical and health products, electronic and hardware parts, as well as various high-end raw materials that require stable storage conditions.
We offer full customization to match your exact needs. We adjust dimensions, material composition and barrier performance based on your material traits and protection standards. Final pricing depends on order quantity and customized material requirements. Before production, we confirm delivery schedule, shipping method and payment terms in detail. We also arrange dedicated tracked logistics for full shipment visibility.
FAQ
Q: What's the actual difference between high-barrier liners and ordinary PE inner bags?
A: Our high-barrier bags adopt a multi-layer composite structure, delivering excellent defense against moisture, oxidation and product deterioration. They're made for sensitive materials with strict storage requirements. Regular PE bags only provide basic moisture resistance, with much weaker overall barrier performance and cannot prevent oxidation or odor intrusion effectively.
Q: Are these bags safe for direct contact with food and pharmaceutical raw materials?
A: Absolutely. We use safe food-grade eco-friendly composite materials that are non-toxic, odorless and free of harmful additives. All materials comply with standard packaging safety requirements for food and pharmaceutical contact.
Q: Can you add anti-static treatment, custom printing or special colors?
A: Yes, all custom upgrades are available. We can apply anti-static treatment, print custom logos and text, and adjust bag colors fully according to your personalized requirements.
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