Our waterproof inner liner bags adopt a practical three-layer composite structure, engineered with distinct functional layers to balance durability, waterproof performance and safe material contact. Every layer is crafted with qualified raw materials that meet mainstream industry safety and performance benchmarks, ensuring stable and reliable overall performance.
The outer layer is constructed with high-strength PE or PET material, featuring great abrasion and tear resistance. It effectively withstands daily scratches, extrusion and friction that commonly occur during product transportation and handling, protecting the inner structure from damage. Sandwiched in the middle is a high-barrier waterproof membrane with IPX7-level waterproof capability. Even with long-term water immersion, this core layer can firmly block water penetration, delivering lasting and stable waterproof protection. The innermost contact layer is available in food-grade and industrial-grade options. The material is completely odorless, with no substance migration, safe for direct contact with pharmaceutical products and food materials without causing contamination.
We offer flexible specifications to match different usage scenarios and protection requirements. The bag thickness ranges from 50μm to 200μm, adjustable freely based on product weight and customized protection standards. In terms of dimensions, the width covers 30cm to 150cm, and the length can be extended up to 300cm with full customization supported. It fits load weights from 5kg to 50kg perfectly. All bags come with thickened and reinforced edge treatment, which effectively prevents deformation and cracking even under heavy loads, adapting to the packaging demands of various weight-grade products.
FAQ
Q: How long can this waterproof liner bag maintain its waterproof performance?
A: Under conventional warehouse storage and normal transportation environments, the bag's waterproof performance stays stable for over six months. For scenarios involving long-term water immersion or extremely high humidity, we recommend matching with outer protective packaging for better protection. We can also customize thicker waterproof layers upon request to prolong the waterproof duration.
Q: What's the sample lead time for customized styles?
A: Standard size samples can be prepared and delivered within 3 working days. For custom-sized samples, production takes 5 to 7 days, depending on process complexity. Once you confirm the sample quality and details, mass production time is determined by total order quantity. Regular bulk orders are finished within 15 working days, and we can shorten the cycle for urgent orders to meet tight shipment schedules.
Q: How do you handle product quality issues after delivery?
A: If you receive goods with any quality problems, you can send us photos and video evidence anytime. Our team will respond within 24 hours to verify the issue. We support full returns, exchanges and replacements for confirmed quality defects, with all related logistics costs covered by us. For damage caused by logistics transit, we will also actively assist you in communicating with the shipping company to claim compensation, fully safeguarding your legitimate rights and interests.
Q: Do you support export business? What documents can you provide for customs clearance?
A: We fully support global export business. We can provide a complete set of standard export documents, including SGS test reports, packing lists, commercial invoices and certificates of origin. These complete and compliant documents ensure smooth customs clearance in most countries and regions worldwide, fully meeting your cross-border shipment needs.
Hot Tags: waterproof inner liner bag, China waterproof inner liner bag manufacturers, factory
