QLF-700A Heavy-Duty Pneumatic Bag Sealer for Fertilizer, Chemical & Agricultural 50kg Woven Bags
QLF-700A Heavy-Duty Pneumatic Bag Sealer for Fertilizer, Chemical & Agricultural 50kg Woven Bags
QLF-700A Heavy-Duty Pneumatic Bag Sealer
The Go-To Sealing Machine for Farms, Fertilizer Plants, and Chemical Factories
If your operation packages fertilizer, chemical powder, pesticides, grain, or agricultural products into 15–50 kg PP woven or multi-layer laminated bags — the QLF-700A is built exactly for you. Powerful pneumatic pressure, double-sided heating, and a 50 kg roller conveyor mean one operator can seal heavy bags all day, fast and consistently, without fatigue or extra manpower.
🎯 Perfect For Your Industry
| Industry | Typical Products Sealed | Why QLF-700A Works |
|---|---|---|
| 🌾 Farms & Agricultural Stations | Grain, animal feed, seeds, crop products | Handles 50 kg bags; one operator; mobile casters for flexible use |
| 🧪 Fertilizer Plants | Compound fertilizer, organic fertilizer, NPK bags | Double-sided heating seals thick PP laminated bags perfectly |
| ⚗️ Chemical & Pesticide Factories | Chemical powder, granules, pesticide bags | Airtight seals prevent leakage; handles multi-layer composite bags |
| 🌽 Grain & Feed Mills | Rice, flour, corn, livestock feed | High-speed 2–10 m/min sealing; connectable to production lines |
| 🏗️ Industrial & Construction | Cement, sand, mineral powder bags | 50 kg load capacity; widened stable frame for heavy-duty use |
🔥 Feature 05 · Single & Double-Sided Heating — Built for Thick, Heavy-Duty Bags
🚨 Critical for thick multi-layer composite bags and heavy 50 kg woven bags.
Standard sealers fail on thick laminated bags — the QLF-700A doesn’t. With powerful pneumatic pressure and optional double-sided simultaneous heating, it delivers strong, airtight seals even on the toughest packaging materials used in chemical and agricultural industries.
| Single-Sided Heating | Double-Sided Heating | |
|---|---|---|
| Best For | Standard PP film, ordinary bags ≤0.2mm | Thick multi-layer composite bags, M-shaped bags ≥0.2mm |
| Typical Use | Grain, feed, general agricultural bags | Fertilizer, chemical powder, pesticide 50 kg woven bags |
| Heating Method | One side heated | Both sides heated simultaneously — deeper penetration, stronger seal |
| Seal Result | Strong — for most applications | Maximum strength — no leakage, no reopening under load |
⚠️ Double-sided heating is an optional upgrade. Contact us when ordering to specify your requirement.
📐 Feature 03 · Adjustable Height — Fits Any Bag Size
The roller conveyor table features a mechanical lifting mechanism with built-in height ruler. Freely adjust the sealing height to match your bag dimensions — no tools needed. Switch between different bag sizes throughout the day without downtime.
- ✅ Adjustable height for bags of any size
- ✅ Built-in ruler for repeatable, consistent setup
- ✅ Tool-free adjustment — fast changeover between bag types
🔧 Control Panel — 3 Key Settings, Simple Operation
Set temperature, sealing time, and cooling time — then press start. That’s it. No complex programming. Any worker can operate it after a 5-minute briefing.
| Control | Function | Recommended Setting for Heavy Bags |
|---|---|---|
| Temperature Selector | Sets heating level (0–300°C) | High setting for thick PP laminated / multi-layer bags |
| Sealing Time | Heat dwell time per seal | Longer dwell for 50 kg thick woven bags — ensures full penetration |
| Cooling Time | Seal solidification time | Adequate cooling prevents seal from reopening under bag weight |
| Emergency Stop | Instant full shutdown | Always accessible for safe operation in industrial environments |
📦 Feature 02 · Roller Conveyor — 50 kg Load, Zero Lifting
Smooth-surface rollers move bags effortlessly into the sealing position. No lifting, no team required. One operator handles the full process from bag placement to sealed output.
- ✅ 50 kg max load — handles the heaviest fertilizer and chemical bags
- ✅ Smooth rollers minimize resistance — energy-efficient and operator-friendly
- ✅ Connectable to existing production lines for automated workflows
- ✅ Standalone operation also supported
⚡ Full Feature Summary
- Pneumatic Downward Sealing — bag stays on the ground; no lifting required
- Double-Sided Heating Option — maximum seal strength for thick multi-layer bags
- 50 kg Roller Conveyor — one-person operation for the heaviest bags
- Adjustable Height (with ruler) — fits any bag height, fast changeover
- 0–300°C Temperature Range — suitable for all PP woven and laminated materials
- Mobile Casters — reposition anywhere in your facility instantly
- Widened Stable Frame — no tipping or vibration during heavy-duty sealing
- Emergency Stop — industrial-grade safety for factory environments
📐 Technical Specifications
| Specification | Value |
|---|---|
| Model | QLF-700A |
| Power Supply | 220V / 50Hz |
| Power Consumption | 1 kW |
| Sealing Speed | 2–10 m/min |
| Seal Width | 10 mm |
| Temperature Range | 0–300 °C |
| Max. Seal Length | ≤ 700 mm |
| Max. Load Capacity | 50 kg |
| Dimensions (W × D × H) | 830 × 685 × 1460 mm |
| Working Air Pressure | 0.4–0.6 MPa |
✅ Why Buyers Choose QLF-700A
| Buyer Pain Point | QLF-700A Solution |
|---|---|
| Thick laminated bags won’t seal properly | Double-sided heating — full penetration, airtight seal |
| 50 kg bags require multiple workers to lift | Roller conveyor + downward sealing — one operator only |
| Different bag heights slow production | Adjustable height conveyor with ruler — fast changeover |
| Machine too complex for factory workers | 3-dial setup — operational in under 5 minutes |
| Need to move machine between stations | Mobile casters — reposition in seconds |
| Seal breaks under bag weight in transit | Pneumatic pressure + cooling time — seal holds under load |
📩 Farms, fertilizer plants, chemical factories, grain mills, and industrial operations — contact us for a quote, custom configuration, or volume pricing. We respond within 24 hours.