In plants that receive raw material in 25 kg bags, opening and emptying the bags by hand is time-consuming, tiring and dusty work. TUNGA automates it: the pallet with the stacked bags is loaded into the machine, which lifts the bags one by one with hooks and passes them between the blades. The material flows into the big bag on the NEVA carrier or directly into a silo, and the empty bags collect in a bin. When the big bag or the hopper is full, the machine stops by itself. Raw material delivered in bags is thus transferred into big bags, and in the rest of the plant it is moved, stored and unloaded like any big bag.
Capacity
The machine opens 2.5–3 tons of bags per hour; this figure varies with the material and the bag type. It has been tested with LDPE and woven bags. The manufacturer states that in a plant opening 3–5 pallets of bags a day, the machine pays for itself in less than a year.
Design
| Component | Feature |
|---|
| Blades | Open the bag; optionally with wings |
| Hopper | Fixed or controlled folding |
| Height control | Monitors the level while the big bag is filling |
| Outlet | Discharge spout into the big bag |
| Empty bag area | Opened bags are collected separately |
| Control | Control cabinet, remote access (IXON) |
| Options | Transfer to NEVA or to a silo, level sensors, vibration, tilting hopper |
Parts in contact with the product are made of duplex stainless steel; the body is steel.
Installation
The standard machine is 4.0 m high and works with 160 cm big bags; for 200 cm big bags there is a 4.4 m high version. The machine is delivered in two parts and installed with a crane or a forklift. It requires compressed air (at least 6 bar) and 400 V three-phase power (2.5 kW). The maximum pallet size is 130 × 140 cm.
Who it is for
For a plant that uses a few pallets of bagged raw material a month, a manually operated sack emptying station is sufficient. If more than one pallet of bags is opened per day, or if bagged and big bag raw materials are used side by side in the same plant, TUNGA reduces both labor and dust and brings bagged raw material into the big bag flow.
