Product Description
Laminated PP woven bags represent 74% of the global PP woven bag market by product type — and for good reason. By bonding a polypropylene or BOPP film to the woven fabric base, lamination transforms a breathable bag into a moisture-resistant, printable, and abrasion-resistant packaging solution without sacrificing the structural strength that makes PP woven bags the industry standard for heavy goods.
Our 25kg laminated PP woven bag is manufactured with extrusion lamination technology — a continuous, pin-hole-free film bond that outperforms adhesive-based lamination in both moisture resistance and delamination resistance under handling stress. Available in standard PP lamination for cost-effective moisture protection, or premium BOPP lamination for photographic-quality print performance, these bags cover the full spectrum of moisture-sensitive 25kg packaging applications.
Why Choose This Bag?
- Extrusion lamination creates a continuous, pin-hole-free moisture barrier — superior to adhesive lamination
- Smooth laminated surface enables sharper, more vibrant printing than uncoated woven fabric
- 74% of global PP woven bag demand is laminated — specification familiar to buyers and filling-line operators worldwide
- Available in PP lamination (cost-effective) and BOPP lamination (premium print and barrier) in the same bag dimensions
- Compatible with all standard filling equipment — open-mouth, valve, and heat-seal closure options available
| 💡 BUYER TIP: If you are unsure whether PP or BOPP lamination is right for your product, request samples of both. The difference in print clarity and surface feel is immediately apparent and usually makes the decision obvious without further technical comparison. |
Typical Applications
- Rice, flour, sugar, and food ingredients requiring moisture protection
- Fertilisers: urea, NPK, and hygroscopic compounds
- Animal feed, pet food, and poultry feed in humid storage environments
- Chemical powders and granules sensitive to moisture
- Any 25kg application where uncoated bags allow moisture ingress, or print quality is important
Technical Specifications
| Capacity | 25 kg net weight |
| Lamination Type A | PP extrusion lamination — moisture barrier, matte finish |
| Lamination Type B | BOPP film lamination — superior print, gloss or matte finish |
| Lamination Thickness | 15 – 30 micron (specified by application) |
| Fabric Weight | 70 – 110 gsm (woven layer) |
| Moisture Barrier | MVTR: typically 8–15 g/m²/24h (PP lami) vs 2–5 g/m²/24h (BOPP) |
| Bag Dimensions | Custom — typical range 45×75 cm to 60×100 cm |
| Closure Options | Sewn open mouth / Heat seal / Pinch bottom / Valve |
| Bag Style | Flat / Side gusset / Block bottom |
| Print Process | Flexographic up to 8 colour (PP lami) / Rotogravure up to 10 colour (BOPP) |
| Finish | Matte (PP lami standard) / High gloss or matte varnish (BOPP) |
| Food Grade | Available — FDA 21 CFR / EC No. 10/2011 compliant |
| Material | 100% Virgin PP |
| MOQ | 10,000 bags per specification |
| Lead Time | 30–40 days (first order); 20–25 days (reorders) |
| Certification | ISO 9001; SGS tested |
Frequently Asked Questions
Q1: What is the moisture vapour transmission rate (MVTR) of your laminated bags?
PP extrusion laminated bags typically achieve an MVTR of 8–15 g/m²/24h, depending on lamination thickness and fabric GSM. BOPP laminated bags achieve 2–5 g/m²/24h — significantly better barrier performance. For highly hygroscopic products (urea, anhydrous compounds), we recommend BOPP lamination or adding a PE inner liner regardless of lamination type.
Q2: Is there a visible difference between a laminated and non-laminated bag?
Yes — laminated bags have a noticeably smoother surface, slightly stiffer hand, and a subtle sheen (or high gloss if BOPP). Non-laminated bags have a coarser, more textile-like surface and are slightly more flexible. In practice, buyers and filling line operators can identify laminated bags immediately by touch and appearance.
Q3: Can laminated bags be heat-sealed instead of sewn?
Yes. The laminated surface is heat-sealable, allowing a fully closed top seal without stitching. Heat-sealed bags provide better dust and moisture control at the closure point compared to sewn bags, which have small needle holes. Heat sealing is increasingly preferred for food and pharmaceutical applications. Provide your sealing equipment type, and we will confirm film compatibility.
Q4: Which lamination type should I choose — PP or BOPP?
Choose PP lamination when: cost is the primary driver, print is functional rather than brand-critical, and moderate moisture protection is sufficient. Choose BOPP lamination when: you need photographic-quality brand graphics, maximum moisture barrier, or a premium retail appearance. BOPP costs approximately 15–25% more per bag but delivers substantially better print quality and barrier performance.
| Upgrade your 25kg packaging to a laminated specification. Contact us for samples of both PP and BOPP laminated bags for direct comparison.
→ Request Laminated Bag Samples – Contact Us |
