In modern petrochemical complexes, large-scale chemical fertilizer plants (Urea, NPK, DAP), industrial salt refineries, and mineral processing facilities, high-speed automated packaging lines—operating at speeds exceeding 2,000 bags per hour—demand tubular polymer films with exceptional mechanical integrity, tight gauge tolerances, and flawless thermal sealing. SherkatTrade Heavy-Duty 3-Layer Co-Extruded FFS (Form-Fill-Seal) Bags and Continuous Tubular Rolls are manufactured on advanced 3-layer blown film extrusion lines incorporating premium metallocene polyethylene (mLLDPE) to deliver peak packaging efficiency.
Engineered with an advanced ABC multi-layer architecture, the outer layer integrates heavy-duty anti-slip embossing and UV stabilizers; the high-modulus middle core provides extreme tensile stiffness and Dart Drop impact resistance (> 800g); while the inner sealing layer features metallocene resins engineered for ultra-low seal initiation temperatures (SIT) and exceptional hot tack strength. This prevents bottom and top seal failures during rapid bag dropping onto high-speed discharge conveyors.
| Technical Parameter | Standard Production Range | Test Standard | Engineering & Operational Benefit |
|---|---|---|---|
| Film Polymer Architecture | Co-Ex 3-Layer (mLLDPE + HDPE + LDPE) | ASTM D1238 | Peak mechanical tenacity, puncture resistance, and instant low-temp seal |
| Film Thickness Range | 100 to 220 microns (400 to 900 gauge) | ISO 4593 | Extreme burst resistance under heavy dynamic drops and pallet stack pressure |
| Tubular Roll Width (Tube) | 380 mm to 650 mm (With M-Fold side gussets) | Tolerance ±2 mm | 100% compatible with Haver & Boecker, Möllers, Windmöller & Hölscher |
| Side Gusset Depth (M-Fold) | 40 mm to 80 mm | Mill Standard | Creates uniform box-shaped pallets with stable interlocked stacking |
| Surface Anti-Slip Texture | Diamond / Dot micro-embossing (COF > 0.65) | ASTM D1894 | High coefficient of friction enabling 3-tier pallet stacking without slip |
| De-aeration Venting System | Micro-perforated labyrinth maze channels | FFS Standard | Evacuates trapped air in < 1.5 seconds while completely blocking water ingress |
| Dart Drop Impact Resistance | > 800 grams at 130 microns thickness | ASTM D1709 | Eliminates bag rupture during palletizing drops and rugged transit handling |
| Tensile Strength (MD / TD) | MD ≥ 28 MPa / TD ≥ 26 MPa | ASTM D882 | Safely supports 25 kg to 50 kg payloads with high safety margins |
| Heat Sealing Temperature Range | 115°C to 150°C | ASTM F88 | Wide sealing window enabling maximum line speed and zero burn-through |
| Outdoor UV Weatherability | 12 to 24 months outdoor port exposure | ASTM G154 | Complete protection against sunlight degradation in open port terminals |
| Industry & End-User Sector | Standard Dimensions & Gauge | Packaged Material | Strategic Commercial Benefit |
|---|---|---|---|
| Petrochemical Polyolefin Pellets | 120 - 150 µm (54 cm tubular width) | PE, PP, PVC, PS, and PET virgin resins | 100% hermetic seal, dust-free bagging, and resin purity preservation |
| Chemical & Agricultural Fertilizers | 140 - 180 µm (50 cm tubular width) | Urea, NPK, ammonium sulfate, phosphates | Superior barrier against corrosive fertilizer dust and moisture caking |
| Industrial & Table Salt Refineries | 110 - 130 µm (45 cm tubular width) | Refined salt, de-icing salt, sea salt | Impermeable moisture barrier preventing hardening and caking in transit |
| Industrial Detergents & Minerals | 130 - 170 µm (55 cm tubular width) | Washing powders, barite, bentonite, silica | Zero powder dusting, clean warehouse storage, and high burst strength |
| Animal Feed & Protein Concentrates | 120 - 160 µm (52 cm tubular width) | Feed pellets, fishmeal, vitamin premixes | Airtight isolation preserving feed nutritional value and aroma integrity |
Our extrusion lines utilize continuous X-ray thickness scanners and automatic air ring modulators to maintain gauge uniformity within ±2% across the entire web, preventing film tracking errors on automatic bagging machines.
The external surface features engineered mechanical texturing that boosts the static coefficient of friction (COF) to over 0.65. This allows pallets to be stacked up to 10 layers high and loaded directly into shipping containers without risk of cargo collapse.
Integrated labyrinth venting channels located along the side gussets release pressurized air instantly when pellets drop into the bag, while creating a tortuous barrier that prevents external rainwater and moisture from entering.
We offer photo-quality flexographic printing using UV-resistant, rub-proof inks to display technical resin grades, hazard pictograms, barcodes, and corporate branding with crisp clarity.
Yes. Our tubular rolls are produced strictly to European and Asian machine manufacturer specifications (Haver & Boecker, Möllers, Newtec, W&H, Paglierani) with standard 76 mm (3-inch) cores and calibrated unwind tension.
By utilizing metallocene polymer resins in a 3-layer structure, our films achieve more than double the tensile and impact strength at reduced film thickness, saving raw material costs and eliminating line downtime.
The standard MOQ is 1 metric ton for unprinted rolls and 2 metric tons for custom-printed rolls. Rolls are securely packed on ISPM-15 heat-treated pallets and covered with protective shrink hoods.
We incorporate Swiss-formulated Hindered Amine Light Stabilizers (HALS) into the outer film layer, certified by accelerated weathering tests to withstand up to 2 years of intense port sunlight.
💡 Packaging Engineering Support, TDS Requests & Wholesale Quotations
Contact the SherkatTrade technical sales division for complimentary test rolls, Technical Data Sheets (TDS), and containerload export pricing.
- 📱 Direct Inquiries & WhatsApp: +98 913 113 2476
- 📧 Corporate Email: [email protected]
- 🏢 Manufacturing Complex: SherkatTrade, No. 12, Shahzadeh Hassan St, Airport Hwy, Isfahan, Iran
| Dimensions | Width: 35 cm - 65 cm (Gusseted), Length: 50 cm - 110 cm, Thickness: 100 - 200 microns |
| Weight per Bag | 80g - 180g |
| Material | hdpe_ldpe_3_layer_ffs |
| Color | opaque_white_translucent_custom_color |
| Printing Type | high_definition_flexo_up_to_8_colors |
| Load Capacity | 25kg - 50kg Heavy Bulk |
| Closure Type | automatic_heat_seal_ffs |
| UV Treatment | Yes |
| Food Grade | Yes |
| Custom Size Available | Yes |
