Valve top PP woven bags
Filled through a valve, which suits automatic filling systems and reduces dust during filling.
View detailsProduct range
PP Woven Bags Manufacturer
Custom PP woven bags for food, feed, agriculture and industrial applications. Based in Wenzhou, China, UnisunPack supplies importers, distributors and brands with tailored woven packaging and reliable production support.
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Built from woven polypropylene tape, not film
PP woven bags are made by weaving polypropylene tapes into fabric and converting the fabric into sacks. Their woven structure offers a practical balance of strength and weight for many dry products.
With over 20 years of industry experience, UnisunPack coordinates printing, lamination, cutting, gusseting, liner insertion and sewing according to approved specifications and samples. Finished bags are checked against agreed requirements before packing.
If you have an existing bag, share a photo, your product and target filling weight. We can review the construction and recommend suitable options for your application.
Features and options
- Strong woven fabric for demanding handling and transport
- BOPP lamination for high-impact retail graphics
- Flat or anti-slip weave for different stacking requirements
- Custom colors and printing to suit your brand
- Functional constructions for different filling and handling needs
- Food-grade and UN-certified options for applicable requirements
Bag styles and closure options
Bag construction should match your filling equipment, product characteristics and handling requirements. Explore the common options below.
Block bottom / square bottom
A folded block base that stands up for shelf presentation and a flat print face.
View detailsTypical specification
| Fabric weight | 55 to 130 gsm (grams per square meter). The recommended weight depends on bag capacity and stacking requirements. |
|---|---|
| Bag capacity | 5kg to 50kg. Heavier or oversized constructions can be produced on request. |
| Denier / tape | Commonly 900D to 1200D virgin polypropylene, or recycled tape where the application permits. |
| Common bag sizes | 10kg 45 × 65cm · 25kg 55 × 90cm · 50kg 60 × 105cm · gusseted, flat or block bottom variants. Any custom size is available. |
| Lamination | Unlaminated, inside laminated, outside BOPP laminated, or PP laminated. |
| Inner liner | No liner, separate PE liner, sewn-in PE liner, or loose liner fixed at the bag mouth. |
| Printing | Custom printing up to 8 colors by flexo, or rotogravure on BOPP laminated bags; two-sided printing available. |
| Closure | Valve, open mouth, hemmed top, heat cut, cold cut, block bottom, sewn bottom. |
| Handles | Die-cut handle, patch handle, or no handle. |
| Certification | Food-grade options and UN-certified constructions are available for applicable products and requirements; documentation is provided according to scope. |
| MOQ | Confirmed against the bag specifications and order quantity in the quotation. |
| Packing | 500 pcs / 1000 pcs per bale, or palletized. Loading photos are provided before shipment. |
What PP woven bags are used for
PP woven bags are used for a wide range of dry products across food, agriculture and industrial markets, including:
- Rice, maize, wheat, barley and other grains
- Flour, sugar, salt and starch
- Pulses, beans, nuts and seed
- Animal feed, poultry feed and fish feed pellets
- Fertilizer, urea and NPK blends
- Cement, sand and construction materials
- Charcoal and briquettes
- Chemicals, resins and mineral powders
- Pet food and aquafeed
- Industrial waste and logistics packaging
Food-contact, chemical and dangerous-goods requirements depend on the product and destination market. For very fine powders or applications requiring a paper-based pack, compare our multiwall kraft paper sacks.
Quality control
ISO 9001:2015 quality system
Quality checks are carried out against agreed specifications at key production stages, including printing, bag conversion and packing.
Food-grade and UN-certified options
Available for applicable products and requirements, with supporting documentation provided within the relevant certification scope.
Traceable quality record
Order-related production records help trace quality issues to the relevant stage.
Third party inspection welcome
Third-party inspections by SGS, BV, Intertek or your appointed QC team can be arranged by agreement.
PP woven bag FAQ
What is the difference between a laminated and an unlaminated PP woven bag?
An unlaminated bag allows more air to pass through the woven fabric and is often suitable for products that need ventilation. Lamination helps close the weave, reduce fine powder leakage and provide a smoother surface for printing. The appropriate choice depends on the product and required protection.
How do I choose the fabric weight (gsm) for my bag?
Fabric weight depends on the product's density, filling weight, handling conditions and stacking arrangement. Share these details, along with your pallet stacking height if available, so we can assess a suitable construction.
Can you supply food grade PP woven bags?
Food-grade options are available for applicable products. Please identify your destination market and food-contact requirements at the quotation stage so we can confirm suitable materials and supporting documentation.
Do you make UN certified bags for dangerous goods?
UN-certified constructions are available for applicable dangerous-goods requirements. Please provide the substance, UN classification, packing group and required filling weight so we can check the applicable packaging requirements.
How many colors can you print, and can I print on both sides?
Printing methods and artwork options depend on the bag construction and design. Share your artwork or a reference image, and we can confirm the suitable printing method and available print areas.
Customer print work
PP woven bags from our production
Examples shown are customer orders produced against approved specifications.
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Full-surface printed laminates for retail shelf presentation.
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PP woven bags with liners
Optional PE, kraft or aluminum inner liners for fine powders, moisture and leakage control.
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PP woven rice bags
PP woven sacks (5kg–50kg) with customized printing for rice applications.
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Let's talk packaging
Custom PP Woven Bags for Your Business
From food and feed to agriculture and chemicals, we supply durable PP woven bags tailored to your product, application and packaging needs.
Tell us what you need, and let's find the right packaging solution for your business.
- Emailsales@unisunpack.com
- Tel / WhatsApp+86 15825665852
- FactoryWenzhou, Zhejiang Province, China 325000
- Response timeWithin 24 hours (Monday - Saturday)
