Open-mouth bag filling scales



This bag filling machine for sacks, pouches, valve bags and pre-formed open-mouth bags from 0.5 to 5 kg and from 5 kg to 25 kg, is particularly suitable for dosing and filling food, chemical or pharmaceutical powder-type products.

Main features:

  • Semi-Automatic operation at gross weight
  • Manufactured in stainless steel AISI 304 or 316
  • Weighing with N° 2 loading cells
  • Dust proof electro-pneumatic Bag locking system
  • Maximum productivity 90- 120 bags / hour
  • De-dusting outlet applied to the bagging mouth
  • Electrical control panel complete with weighing software for integration in industry 4.0 systems


  • Frame on wheels
  • Roller conveyors for filled bags
  • Sewing or heat sealing line, depending on the bag used
  • Implementation in accordance with Atex Directive 2014/34/EU zone 1-21 and 2-22

The dosage is managed via screw conveyor or flexible spiral/screw conveyor controlled by inverter or brushless driver for capacity adjustment.

Suitable filters on wheels can be supplied for localized dedusting.

A version of the filling scale can also be provided with the possibility to change sizes for filling preformed bags and open-mouth bags from 0.5 kg to 25 kg with a single machine.

Electronic filling scales for valve bags from 15 to 25 kg are designed to package plastic granuales rapidly and semi-automatically with weight control. Powders can also be dosed and bagged with appropriate alterations.

The main features are:

  • Parts in contact with the product in Aisi 304 -316 stainless steel
  • Height-adjustable bag stand for weighing
  • Bag vibration/shaking during filling to ensure settling of the product in case of fine particles that tend to absorb air.
  • Powder intake cap on the filler nozzle
  • Pneumatic bag sealing piston on the filling nozzle
  • Filling nozzle diam.76 mm (other sizes on request)
  • Control panel with approved weighing instrument or HMI touch panel and dedicated PLC weighing software for integration with industry 4.0 system

GIMAT also produces drum filling systems of various sizes, in addition to the bag filling scales described above.

The fillers and dispensers for drums are machines that, while taking advantage of the experience we have acquired over the years, are customized case by case in response to the customers’ needs.


Integrated system on wheels for filling preformed open-mouth bags from 1 to 5 kg and from 10 to 20 kg with a single unit equipped with size change mechanism. Gravimetric filling scale with storage hopper holding 100 lt and flat-bottomed agitator/extractor to facilitate pouring and dosing the powder contained. Precision, reliable dosing thanks to the brushless motor and driver which control the dosing screws as needed. Hopper filling by flexible screw or pneumatic conveyor, in case of frequent changes of product, with high vacuum pump to prevent de-mixing during movement. Solution designed in an “easy cleaning” version specific for the food or pharmaceutic sector. Integration with industry 4.0 systems.

Bag filling scale for 5 to 25 kg open-mouth bags and boxes with container bags. Conveyance and dosage by easy-to-clean and inspect grooved screw or flexible screw conveyor suitable for powdered foods and chemicals.

Bag filling scale entirely in stainless steel, on wheels, for filling open-mouth bags from 5 to 25 kg complete with service roller conveyor. Powder dosing by screw conveyor, reclinable for facilitated cleaning with uptake starting from a 1500 lt. horizontal belt mixer.

Bulk Bag Emptying, volumetric dosing and continuous mixing of powders during conveyance via flexible screw, filling of drums on motor-driven roller belt and weighing

Filling scale for 25 kg open-mouth bags, with dosing and control
of weight by flexible screw conveyor

Electronic filling scale for valve bags. Suitable for granules and powders. Wired control panel on machine. Piston vibration system of bag stand to ensure correct bag filling.

Bulk Bag Emptying, sifting in line with mesh of less than 1 mm, conveyance and dosage of powders by flexible screw, metaldetector in line and bag filling in 20 kg boxes or open-mouth bags with size change mechanism. Movement of boxes on idle roller belt with approved control in use by third parties at the end of the line.


Bulk Bag Emptying, powder conveyor with flexible screw, dosing and filling of 10 to 25 kg open-mouth bags.