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How PP Woven Bags Are Made – Inside Tan Hung JSC’s Production Process

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Behind the Scenes: How Tan Hung JSC Manufactures Millions of PP Woven Bags Each Month

Introduction

Have you ever wondered how PP woven bags are made on an industrial scale? These durable, eco-friendly, and versatile bags are widely used in agriculture, construction, food, and retail packaging. At Tan Hung JSC, one of Vietnam’s leading PP woven bag manufacturers, the production process combines precision engineering, innovation, and sustainability.

With a monthly capacity of millions of polypropylene bags, Tan Hung JSC supplies global clients across more than 40 countries. In this article, we’ll take you on a factory tour to explore the step-by-step PP woven bag manufacturing process — from raw materials to finished, export-ready products.

Step 1: Raw Material Selection – The Foundation of Every PP Woven Bag

The journey begins with polypropylene (PP) granules, which are the primary raw material. These small pellets are either imported or sourced locally based on customer specifications.

  • Virgin PP granules are used for maximum strength and flexibility.

  • Calcium carbonate fillers are sometimes added to improve stiffness, cost-efficiency, and eco-performance.

This careful material selection ensures that every PP woven bag has the durability and load-bearing strength required for heavy-duty applications.

👉 Pro Tip: Using high-quality raw material is the first step to producing tear-resistant and long-lasting PP bags.

Step 2: Extrusion – From Granules to Strong Tapes

In the extrusion stage, polypropylene granules are melted at high temperatures and then extruded into thin flat tapes. These tapes are rapidly cooled and then stretched to increase their tensile strength.

Key quality parameters in this stage include:

  • Width & thickness of tapes (which determine bag strength)

  • Stretching ratio (for durability and flexibility)

  • Consistency of rolls (to avoid weak points in weaving)

At Tan Hung JSC’s PP woven bag factory in Vietnam, extrusion machines operate 24/7 to maintain large-scale production while ensuring uniform quality.

Step 3: Weaving – Creating the PP Woven Fabric

Once tapes are ready, they move to the weaving process, where they are interlaced into woven fabric rolls. Depending on the bag type, we use:

  • Circular looms (for tubular woven fabric used in sack bags)

  • Flat looms (for flat fabric sheets, ideal for customized bags)

This weaving stage creates a strong, breathable, and flexible fabric that is the backbone of PP woven bags.

👉 If you’ve ever searched for “how PP woven bags are made,” weaving is one of the most critical steps in ensuring strength and durability.

Step 4: Lamination, Printing & Customization

After weaving, the PP fabric can undergo various finishing treatments based on customer needs:

  • Lamination: Adds a moisture-resistant layer, making bags ideal for storing rice, sugar, flour, fertilizer, and cement.

  • Printing: Using flexographic or gravure printing, Tan Hung JSC offers up to 12-color printing with eco-friendly inks for branding and marketing.

  • UV Protection: Bags can be coated with UV stabilizers, extending outdoor storage life.

  • Anti-slip treatment: Prevents stacked bags from sliding during transport.

At this stage, custom PP woven bags are tailored to industries ranging from agriculture to retail.

Step 5: Cutting, Stitching & Final Assembly

The laminated and printed fabric is then cut into bag panels of specific sizes. Key steps include:

  • Heat cutting or zig-zag cutting to prevent fraying.

  • Folding and double-stitching the bottom for extra strength.

  • Adding liners (PE liners) for products that require extra moisture protection.

Every bag is carefully stitched and assembled, ensuring it meets Tan Hung JSC’s ISO-certified quality standards.

Step 6: Quality Control & Testing – No Room for Error

At Tan Hung JSC, quality assurance is built into every stage of production. A dedicated team checks every batch for:

  • Load-bearing capacity (drop and tensile strength tests)

  • Dimensions & weight consistency

  • Print quality & color accuracy

  • Moisture resistance for laminated bags

All PP woven bags comply with ISO and SGS global standards, making them export-ready for international clients.

Step 7: Baling, Packing & Container Loading

Once approved, finished bags are compressed into bales, strapped securely, and labeled. Each bale is packed with minimal handling time using automated systems.

From there, the logistics team ensures smooth container loading and international shipping from Vietnam’s ports to destinations worldwide — from Asia to Europe, the Americas, and Africa.

Why Choose Tan Hung JSC as Your PP Woven Bag Manufacturer?

With over 20 years of expertise, Tan Hung JSC has become a trusted global supplier for businesses in agriculture, food, construction, retail, and chemicals.

Our competitive advantages include:

  • 🌍 Mass production capacity: Millions of bags manufactured monthly.

  • ✅ ISO-certified quality control: Meeting strict international standards.

  • 🎨 Customization options: Sizes, designs, printing, UV coating, and lamination.

  • 💰 Competitive global pricing: Flexible FOB and CIF options.

  • ♻️ Sustainable production practices: Offering recycled PP woven bags and waste-reduction systems.

Applications Across Industries

Tan Hung JSC’s PP woven bags are designed for versatile use:

  • Agriculture: Rice, corn, flour, feed, and grain storage.

  • Construction: Cement, sand, gravel, and aggregate packaging.

  • Food Industry: Sugar, salt, beans, nuts, and frozen goods.

  • Retail & Fashion: Custom shopping totes and branded reusable bags.

  • Chemicals & Fertilizers: Anti-slip and moisture-proof PP sacks.

👉 Related Post: Top 10 Benefits of Using PP Woven Bags for Packaging in 2025

Sustainability Commitment

As global packaging regulations tighten, sustainable packaging is no longer optional. At Tan Hung JSC, we are committed to eco-friendly practices:

  • Offering recycled PP woven bags

  • Reducing waste with closed-loop production systems

  • Partnering only with environmentally responsible suppliers

By choosing PP woven bags from Tan Hung JSC, businesses not only benefit from high-quality packaging but also contribute to a circular economy and reduced carbon footprint.

Final Thoughts

Understanding how PP woven bags are made highlights the precision, engineering, and care behind every product. At Tan Hung JSC, we blend advanced manufacturing technology with global sustainability goals to deliver millions of high-quality PP woven bags every month.

Whether you need fertilizer bags, flour bags, sugar sacks, or branded shopping bags, Tan Hung JSC is your trusted partner in Vietnam PP woven bag manufacturing.

📌 Ready to upgrade your packaging? Contact Tan Hung JSC today and discover why businesses worldwide trust us for their PP woven bag supply.

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