DLP Series Industrial Flexitank & Sea Bag Making Machine
Ideal for container flexitank (liquid packaging) and three-dimensional sea bags (industrial equipment packaging) — for edible oil, wine, chemicals, machinery, vehicles, and appliances. HAOSEN integrates top Chinese factories, one-stop delivery, patent-verified, full after-sales backup.
| Metric | DLP-4000 (Flexitank) | DLP-2500 (Sea Bag) |
| Max. Bag Width | 4000 mm | 2460 mm |
| Max. Bag Length (per feed) | 1600 mm | 1600 mm |
| Max. Bag Height | — | 2460 mm |
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Overview & Technical Specifications
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| Parameter | Specification |
| Model | DLP-4000 |
| Function | Container flat flexitank intelligent bag making machine |
| Applicable Materials | All heat-sealable materials, including pure PE |
| Max. Film Width | 4050 mm |
| Max. Roll Diameter | φ1200 mm |
| Max. Bag Width | 4000 mm |
| Max. Bag Length (per feed) | 1600 mm |
| Bag Making Speed | 2.5 bags/min |
| Machine Dimensions | 38000 × 8000 × 3200 mm |
| Machine Weight | Approx. 35,000 kg |
| Power Supply | 3-phase AC, 380V, 50HZ |
| Parameter | Specification |
| Model | DLP-2500 |
| Function | Three-dimensional sea bag intelligent bag making machine |
| Applicable Materials | All heat-sealable materials, including pure PE |
| Max. Film Width | 2550 mm |
| Max. Roll Diameter | φ800 mm |
| Max. Bag Width | 2460 mm |
| Max. Bag Height | 2460 mm |
| Max. Bag Length (per feed) | 1600 mm |
| Bag Making Speed | 3 bags/min |
| Machine Dimensions | 38000 × 6600 × 3200 mm |
| Machine Weight | Approx. 22,000 kg |
| Power Supply | 3-phase AC, 380V, 50HZ |
Metric & Value
| Metric | DLP-4000 (Flexitank) | DLP-2500 (Sea Bag) |
| Max. Film Width | 4050 mm | 2550 mm |
| Max. Roll Diameter | φ1200 mm | φ800 mm |
| Bag Making Speed | 2.5 bags/min | 3 bags/min |
| Machine Dimensions | 38000×8000×3200 mm | 38000×6600×3200 mm |
| Machine Weight | 35,000 kg | 22,000 kg |
| Applicable Materials | All heat-sealable materials, including pure PE | All heat-sealable materials, including pure PE |
Key Advantages
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For DLP-4000 Flexitank Machine:
Ultra-Wide 4000mm Production Capacity
Maximum bag width of 4000mm and film width of 4050mm enables production of large-capacity flexitank bags from a few liters to several thousand liters — perfect for bulk liquid shipping.
Superior Leak-Proof Sealing
Special sealing design with precision heat sealing technology ensures leak-proof closures — critical for liquid transportation by sea, eliminating costly spillage claims.
5-in-1 Integrated Production System
Combines prefabricated forming, heat sealing, cutting, metering, and control in one continuous line. Raw materials in → finished liquid bags out.
35-Ton Heavy-Duty Construction
Weighing 35,000 kg with massive structural design — ensures exceptional stability during high-speed operation of large-format film.
All Heat-Sealable Materials Compatible
Handles all heat-sealable materials including pure PE — flexible material options for different liquid packaging requirements.
Three-Dimensional Structure
Multi-layer three-dimensional design creates compact, space-saving bags that maximize container utilization — reduces shipping costs by up to 30%.
Superior Protection Performance
High-strength plastic construction provides excellent pressure resistance, moisture resistance, dust protection, and impact resistance — protects valuable industrial equipment during ocean freight.
Easy Assembly & Disassembly
Designed for quick and easy bag setup and removal — reduces labor time and simplifies logistics operations.
Eco-Friendly & Recyclable
Made from environmentally friendly materials that are recyclable and reusable — meets green packaging requirements.
Wide Application Range
Suitable for large machinery, vehicles, home appliances, and other oversized industrial items.
High Automation & Precision
Advanced control system with high degree of automation — reduces operator error, ensures consistent quality, and maximizes production efficiency.
Customizable Production Parameters
Production speed, bag size, sealing parameters can be adjusted according to specific customer requirements.
Global Leader in Bulk Fluid Logistics
Proven expertise in bulk fluid logistics packaging equipment — trusted by customers worldwide.
Technical Details & Components
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| Component | Description |
| Prefabricated Bag Forming Machine | Extrudes plastic raw materials into the desired bag shape and size. Customizable according to product characteristics. Fixes formed bags onto the conveyor belt for continuous production. |
| Heat Sealing System | Uses hot air heating to melt and bond bag surfaces. Adjustable parameters for ideal sealing effect. Critical for leak-proof liquid packaging. |
| Cutting System | Precisely cuts heat-sealed bags to required length and width. Adjustable to meet different cutting specifications. |
| Metering System | Quantitatively fills liquid into formed bags. Adjustable for different liquid types and volumes. |
| Control System | Full equipment operation control including forming, sealing, cutting, and metering. Supports automatic production scheduling and manual override. |
| Component | Description |
| Main Machine (Die Head + Feeding) | Bag making die head with adjustable opening size. Feeding device speed controls production rate. Produces various bag types and dimensions. |
| Heating System | Electric heating wire melts plastic to form hot melt adhesive. Precise temperature control for consistent quality. |
| Transmission System | Motor and belt drive system powers the main machine and heating system. Reliable, low-maintenance operation. |
| Control System | Electrical control cabinet manages entire bag making process. User-friendly interface for easy operation. |
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Why HAOSEN?
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| We screened 30+ flexitank and sea bag machine factories to select these reliable suppliers — clean patents, verified after-sales, proven quality. | |
| You deal with HAOSEN exclusively. One point of contact coordinates extrusion, circular loom production, lamination, printing, and bag manufacturing across 5–6 factories. | |
| Complete production line delivered together — one inspection, one shipment. No need to coordinate with multiple suppliers across China. | |
| We will dispatch Chinese engineers to handle installation, commissioning, and training. Your local team will be able to operate independently within 2 to 4 weeks. | |
| Spare parts warehouses in India and Southeast Asia — common parts delivered within 3 days; 24/7 remote technical support. | |
| Design to production—we provide a complete turnkey solution, or your money back. |
Solving Your Pain Points
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| Customer Pain Point | HAOSEN Solution |
| Pain Point 1: Flexitank liquid leakage during sea transportation — costly spills, customer claims, environmental penalties | ✅ HAOSEN Solution: DLP-4000 special sealing design with precision heat sealing ensures leak-proof closures — eliminates liquid leakage during container shipping. |
| Pain Point 2: Limited bag size — can't produce large-capacity flexitank for bulk liquid orders | ✅ HAOSEN Solution: DLP-4000 produces bags up to 4000mm wide with adjustable capacity from a few liters to several thousand liters. |
| Pain Point 3: Industrial equipment damage during ocean freight — expensive machinery ruined by moisture, dust, impact | ✅ HAOSEN Solution: DLP-2500 high-strength three-dimensional sea bags provide superior protection — pressure-resistant, moisture-proof, dust-proof, and impact-resistant. |
| Pain Point 4: High shipping costs due to inefficient packaging — wasted container space | ✅ HAOSEN Solution: DLP-2500 compact three-dimensional design maximizes container utilization — reduces shipping costs by up to 30%. |
| Pain Point 5: Complex packaging process for large items — slow, labor-intensive | ✅ HAOSEN Solution: DLP-2500 easy assembly and disassembly design — reduces labor time and simplifies logistics. |
| Pain Point 6: Need multiple machines for different packaging needs — high capital investment, floor space | ✅ HAOSEN Solution: Two specialized machines (DLP-4000 for liquids, DLP-2500 for equipment) cover all industrial packaging needs. |
| Pain Point 7: Environmental compliance pressure — need sustainable packaging solutions | ✅ HAOSEN Solution: Both machines produce eco-friendly bags from recyclable materials — meets green packaging regulations. |
| Pain Point 8: Complex supply chain coordination — multiple suppliers for film, sealing, cutting, printing | ✅ HAOSEN Solution: HAOSEN integrates everything — one point of contact, one delivery, one warranty. |
Applications
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| Industry | DLP-4000 (Flexitank) | DLP-2500 (Sea Bag) |
| Food & Beverage | Edible oil flexitank, wine BIB, juice containers | — |
| Industrial Chemicals | Chemical flexitank, solvent bags, industrial liquid containers | — |
| Agriculture | Liquid fertilizer bags, pesticide flexitank | — |
| Heavy Equipment | — | Large machinery packaging, vehicle shipping bags |
| Electronics & Appliances | — | Home appliance protection bags, electronics shipping |
| Logistics & Freight | Bulk liquid container shipping | Oversized item ocean freight protection |
| Pharmaceutical | Medical liquid bags, sterile solution containers | — |
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