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How Are Non Woven Bags Made? Step-by-Step Manufacturing Process
29/11/2025

When you choose non woven bags, you’re not just buying packaging—you’re investing in durability, eco-friendliness, and cost-effective branding. Understanding how these bags are made helps you appreciate their value and quality. From raw polypropylene granules to finished packaging, every step ensures strength, customization, and sustainability for your business needs.

Custom Eco Non Woven Sewing Tote Bag with Hard Bottomboard

Raw Materials: From PP Granules to Fabric

Non woven bags begin with polypropylene (PP) granules, a thermoplastic polymer widely used in eco-friendly packaging. These granules are melted and spun into fibers. Unlike woven fabrics, non woven fabric is created directly from fibers, making it lightweight yet strong—perfect for non woven shopping bags bulk.

Web Formation: Creating Non Woven Fabric

Using spunbond technology, fibers are laid into sheets to form a uniform web. This ensures consistent strength and flexibility, producing fabric suitable for promotional non woven tote bags and custom printed non woven bags.

Bonding: Turning Fibers into Strong Sheets

Heat, pressure, or ultrasonic welding bonds the fibers together. This process creates durable sheets that resist tearing, making them ideal for eco-friendly packaging bags used in retail and wholesale.

Fabric Finishing and Quality Checks

Before production, the fabric undergoes strict quality checks:

  • Thickness (GSM) testing for durability
  • Color consistency for branding accuracy
  • Surface smoothness for better printing results

These checks guarantee premium quality for your non woven bags manufacturing process.

Bag Design and Technical Specifications

At this stage, you can customize:

  • Sizes and shapes (flat, gusseted, box-style)
  • Colors to match your brand identity
  • Special features like zippers or reinforced handles

This flexibility makes non woven bags perfect for promotional campaigns, retail packaging, and wholesale distribution.

Cutting: From Fabric Roll to Bag Panels

Automated cutting machines slice fabric rolls into panels with precision. These panels form the body of your bag, ready for stitching or ultrasonic welding.

Printing: Adding Your Branding

Your logo and design are added through:

  • Screen printing for bold designs
  • Flexographic printing for large-scale production
  • Digital printing for detailed graphics

This step transforms plain bags into custom printed non woven bags that promote your brand.

Bag Forming: Sewing vs Ultrasonic Welding

Two main techniques assemble the bags:

  • Sewing: Traditional stitching for heavy-duty use
  • Ultrasonic welding: Seamless bonding for sleek designs

Both methods ensure durability, but ultrasonic welding offers a cleaner finish for premium non woven tote bags.

Handle Making and Attachment

Handles are critical for usability:

  • Stitched handles for heavy loads
  • Welded handles for modern aesthetics
  • Reinforced handles for long-lasting performance

Strong handles make non woven bags reliable for everyday use.

Final Finishing and Packaging

After assembly, bags are trimmed, folded, and packed in bulk. This step ensures they are ready for wholesale non woven bags supplier distribution, reducing costs and improving logistics.

Environmental Benefits and Compliance

Non woven bags are:

  • Reusable and recyclable
  • Compliant with eco-friendly packaging standards
  • A sustainable alternative to single-use plastics

By choosing non woven bags, you demonstrate your commitment to sustainable packaging solutions.

How Zhongjin Packaging Supports Your Projects

At Zhongjin Packaging, we specialize in producing custom non woven bags tailored to your business needs. Whether you require bulk orders, promotional tote bags, or eco-friendly packaging solutions, we provide:

  • Advanced printing technology for branding
  • Large-scale production capacity
  • Reliable delivery for wholesale clients

Partnering with us means you get high-quality products and a trusted supplier who understands your packaging goals.

Conclusion

By choosing Zhongjin Packaging, you gain access to high-quality non woven bags designed for durability, branding, and sustainability. Whether you need promotional tote bags or wholesale packaging solutions, we deliver eco-friendly products that elevate your business. Partner with us to make your packaging smarter and greener.

FAQs

Q1: What are non woven bags made of?
They are made from polypropylene fibers bonded into fabric sheets.

Q2: Can I customize the size and design?
Yes, Zhongjin Packaging offers full customization including size, gusset, and printing.

Q3: Are non woven bags eco-friendly?
Absolutely. They are reusable, recyclable, and reduce reliance on single-use plastics.

Q4: What printing options are available?
Screen printing, flexographic, and digital printing for logos and branding.

Q5: Do you provide bulk orders?
Yes, we specialize in wholesale non woven bags for businesses.

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