In modern cold-chain logistics, commercial meat and poultry processing, aseptic fruit puree drumming, edible oil and shortening packaging, industrial adhesives, and pharmaceutical powder handling; protecting contents from moisture, dust, fat permeation, and preventing leaks into corrugated cartons or steel drums demands high-integrity 3D internal liners. SherkatTrade 3D Gusseted Polyethylene Liner Bags (M-Fold Carton, Drum & Big Bag Liners) are manufactured from 100% virgin food-grade polyolefin resins on wide-width extrusion lines to provide seamless, wrinkle-free interior containment.
Engineered with generous expandable side gussets and heavy-duty reinforced bottom seals, these liners instantly open into true rectangular cuboids or cylindrical profiles, fully occupying box corners without bridging or dead space. This structural design prevents carton wall puncture from sharp frozen meat corners, avoids corner stress concentrations, and guarantees zero leakage of fluids, blood, oils, and pastes.
| Technical Parameter | Standard Production Range | Test Standard | Operational & Commercial Advantage |
|---|---|---|---|
| Polymer Resin Grade | 100% Virgin Food-Contact LDPE / LLDPE Blend | ISIRI / FDA / EU 10/2011 | Odorless, heavy-metal free, certified for direct contact with fatty foods |
| Gauge / Thickness Range | 40 to 180 microns (160 to 720 gauge) | ISO 4593 | High burst and puncture resistance under dynamic product payloads up to 50 kg |
| Open Mouth Width | 40 cm to 250 cm (Flat width: Face + Gussets up to 350 cm) | Tolerance ±3 mm | Full coverage for standard corrugated boxes, octabins, and pallet boxes |
| Liner Bag Length | 50 cm to 350 cm | Mill Standard | Generous top skirt allowing easy cuffing, manual tying, or heat-sealing |
| Side Gusset Depth (M-Fold) | 5 cm to 50 cm per side | 3D Structural Geometry | Eliminates corner bunching and conforms 100% to vertical carton walls |
| Bottom Seal Weld Strength | Double continuous thermal weld or star seal | ASTM F88 | 100% hermetic and leak-proof against brine, animal blood, oils, and wet pastes |
| Cryogenic Freezing Stability | Tested down to -40°C in blast freezing tunnels | ASTM D1790 | Zero film embrittlement, cracking, or shatter under deep freeze storage |
| Hot Filling Thermal Tolerance | Up to 85°C (Hot Fillable) | Factory Standard | Allows direct pouring of warm adhesives, fruit purees, and paraffin waxes |
| Color Customization | Food-Grade Meat Blue, High-Clarity Clear, Yellow, Black | Food-Safe Masterbatch | Blue tint allows immediate visual detection of foreign plastic particles |
| Electrostatic Dissipation | Surface resistivity 10^9 to 10^11 Ohms (Optional) | ASTM D257 | Safe static discharge when drumming explosive chemical or pharmaceutical powders |
| Industry & End-User Sector | Recommended Dimensions (W + G × L) | Thickness | Packaged Product Payload |
|---|---|---|---|
| Meat & Poultry Slaughterhouses | (30+30) × 60 cm / (40+40) × 80 cm | 45 - 65 µm | Export frozen beef quarters, boneless poultry, and lamb cuts |
| Dairy, Butter & Edible Fats | (25+25) × 60 cm / (35+35) × 70 cm | 50 - 70 µm | 20 kg & 25 kg butter blocks, shortening, margarine, and ghee |
| IQF Frozen Fruits & Vegetables | (40+40) × 90 cm / (50+50) × 100 cm | 55 - 80 µm | Frozen berries, green beans, peas, and diced vegetables |
| 200-Liter Steel & Plastic Drums | Round Disc Bottom / (50+50) × 120 cm | 90 - 140 µm | Aseptic tomato paste, fruit purees, resins, paints, and chemicals |
| Pharmaceutical & Chemical Bulk | (50+50) × 120 cm / Custom FIBC Liners | 100 - 160 µm | Bulk active pharmaceutical ingredients, pigments, and hygroscopic pellets |
Precision gusset forming ensures that the liner lines the carton interior snugly without air pockets, increasing usable packaging volume by up to 15% compared to flat bags.
Digitally monitored thermal welding prevents liquid migration, fat leaching, and moisture permeation, keeping corrugated master cartons completely dry, rigid, and reusable.
Our food-approved blue masterbatch is universally recognized across EU and international meat processing plants, enabling instant optical identification on sorting tables.
Formulated with calibrated slip and anti-block additives, box packers can snap open liners in less than a second, dramatically improving packaging line packing rates.
Liner Width = Carton Width + Carton Length + 5 cm allowance. Liner Length = Carton Height + (Half Carton Width) + 15 cm top skirt for folding or heat-sealing.
Yes. SherkatTrade liners are manufactured exclusively from 100% virgin food-contact polyolefins complying with FDA 21 CFR 177.1520 and EU Regulation 10/2011.
Flat bags bridge across box corners, creating dead space, tensile stress, and risk of tearing when heavy items are dropped in. Gusseted liners conform perfectly to rectangular walls.
The standard MOQ is 500 kg. Liners can be supplied loose-packed in bundles of 50 or 100 bags inside protective outer sacks, or wound on perforated continuous rolls.
💡 Technical Sizing Support, Sample Liner Requests & Export Quotations
Contact our engineering sales specialists for sample liners tailored to your carton or drum dimensions, Technical Data Sheets (TDS), and bulk wholesale pricing:
- 📱 Direct Inquiries & WhatsApp: +98 913 113 2476
- 📧 Corporate Email: [email protected]
- 🏢 Manufacturing Plant: SherkatTrade, No. 12, Shahzadeh Hassan St, Airport Hwy, Isfahan, Iran
| Dimensions | 55x105 cm, 65x115 cm, 80x130 cm, 100x160 cm (Customizable for Sacks & Drums) |
| Weight per Bag | 20g - 120g |
| Material | virgin_ldpe_lldpe_food_grade |
| Color | transparent_crystal_clear_tinted_blue |
| Printing Type | unprinted_or_flexo |
| Load Capacity | Internal barrier for 25kg - 100kg sacks/drums |
| Closure Type | open_mouth_heat_sealable_or_twist_tie |
| UV Treatment | No |
| Food Grade | Yes |
| Custom Size Available | Yes |
