PP woven bags with PE lining are double-layer integrated packaging sacks combining outer PP woven fabric and independent inner PE plastic liner, tailored for granular, powdery and hygroscopic materials requiring full leak-proof and moisture-proof isolation. Different from single-layer coated woven bags with film attached to cloth surface, this product adopts a separate bag-type PE inner liner sleeved inside the outer woven bag, realizing thorough separation between goods and the outer woven layer. Customers can customize the inner liner with HDPE (low-pressure PE) or LDPE (high-pressure PE) according to material characteristics and storage environment.
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Product Overview
PP woven bags with PE lining are double-layer integrated packaging sacks combining outer PP woven fabric and independent inner PE plastic liner, tailored for granular, powdery and hygroscopic materials requiring full leak-proof and moisture-proof isolation. Different from single-layer coated woven bags with film attached to cloth surface, this product adopts a separate bag-type PE inner liner sleeved inside the outer woven bag, realizing thorough separation between goods and the outer woven layer. Customers can customize the inner liner with HDPE (low-pressure PE) or LDPE (high-pressure PE) according to material characteristics and storage environment. Two edge-locking processes are optional for the lining mouth: traditional thread stitching and seamless laser sealing. The complete production workflow includes PP flat yarn extrusion, circular weaving, cold cutting, PE liner blowing, liner sleeving and opening edge locking. Each finished bag features uniform woven density and stable tensile strength, and the inner liner fits closely without shifting inside the outer bag. Standard specifications are available in stock, and bag size, liner thickness and edge-locking craft can be adjusted on demand.
This PE inner-lined woven bag stands out for fully customizable inner liner materials and flexible sealing options. Multiple fixed width sizes are supplied with loose order quantity restrictions. For dry, oily granular materials, rigid low-pressure HDPE liners are recommended; for fragile, fine powder goods, soft high-pressure LDPE liners deliver better fit and anti-breakage performance. Thread stitching is low-cost and suitable for general bulk cargo, while laser sealing creates fully seamless openings to completely stop ultra-fine powder leakage. It is widely adopted by food raw material factories, chemical powder manufacturers, seed breeding bases and food additive enterprises with strict dust-proof standards.
During production, the outer woven bag is finished with precise weaving and cold cutting first, then matched with custom-sized PE inner bags and sleeved manually or mechanically. Thread-locked edges are sturdy and easy to process; laser-sealed edges have no pinholes to block tiny particles. The foldable double-layer bag saves storage space when empty, matching indoor constant-temperature warehouses and sealed transport containers. The dual-layer structure of woven outer bag plus independent PE liner provides dual protection against moisture, dust and fine powder spillage.
Apart from reliable medium-load bearing capacity, the detachable PE liner can be replaced separately for repeated use of the outer woven bag, cutting long-term packaging costs. With optional HDPE/LDPE inner liner, two edge-locking processes, zero powder leakage performance and neat cold-cut outer bag edges, PP woven bags with PE lining have become a practical double-layer packaging solution for food powder, chemical raw materials, crop seeds and fine granular products across all industries.
FAQ
Q: Can I mix different sizes or designs in one container?
A: Yes, mixed loading is welcome. As long as the total volume fits within the container's capacity, we can load different sizes and colors together. Please provide a detailed assortment list in advance to help us optimize the loading plan and help you reduce inventory pressure.
Q: What are your payment terms?
A: We offer two standard options:
T/T (Telegraphic Transfer): 30% deposit to commence production, 70% balance against the copy of the Bill of Lading (B/L).
L/C (Letter of Credit): We accept Irrevocable Letters of Credit at sight.
Q: Are prices fixed? Why do quotes sometimes change?
A: The primary raw material (Polypropylene) is a petrochemical derivative, and its market price fluctuates frequently. Our quotations are typically valid for 7 days. Please confirm the final price with us before placing the order to ensure accuracy.
Q: Are samples free of charge?
A: Existing standard samples are free (freight collect). If you require a custom prototype sample with your specific printing, a sampling fee (approx. RMB 200–500) applies. This fee will be refunded against your future bulk order.
I warmly welcome your letters or calls. If you have anything to discuss, please feel free to let me know. I warmly welcome your letters or calls. If you have anything to discuss, please feel free to let me know.
