Irta VX STB 4 Welds Bag Packaging Machine

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Irta VX STB | 4 Welds Multiformat Bag Packaging Machine

The high performance multiformat 4 welds bag packaging machine allows fast and effortless changes at an excellent price.

This is the most suitable vertical packaging machine (VFFS) for making the most common sized bags on a single machine. By simply changing the former the following bags can be produced: pillow type, block bottom pillow type, block bottom quad seal, block bottom with 5 seals.

The Irta VX STD multiformat packaging machine (VFFS) is the natural evolution from our standard packaging machine. It widens the variety of formats by adding 4 and 5 seam block bottom bags and for this reason it is preferred by those industries which require that something extra in the presentation of their products.

Irta VX STB 4 welds. overview of the machine


Almohadilla básica
Pillow type Bags
Bags / Pillow Pack
Block Bottom Bag
Block Bottom Bag
Bags / Block Bottom
Block Bottom 4 welds
Block Bottom Bag 4 Seams
Bags / Block Bottom 4 seam welds
Square packet
Bags / Square Packet
Square packet 4 seams
Bags / Square Packet 4 seam welds
Square packet 5 seams
Bags / Square Packet 5 seam welds
Gusseted Bag
Bags / Gusseted
Block Bottom 5 Welds
Bags / Block Bottom 5 seam welds
Download the commercial brochure of the 4 Welds Multiformat Bag Packaging Machine Irta VX STB


Film feed

Automatic film feed by means of servo drive unwinding system. An electronically controlled linear unwinding system is applied tangentially to the reel.


The configuration of the machine allows us to produce a wide range of sizes from 40mm to 350mm (bag width). It also permits the use of both round and rectangular formers with vertical, central or asymmetrical seams. Production of pillow type bags with central or side (invisible) seams.


When trying to optimize production, filling is one of the factors to take into consideration. Our system guarantees perfect synchronization between the dosage unit, the pull system (freefall/freeflow) and the jaw sealers taking into account the type of product and the type of seam which the plastic requires.

Sealing and cutting

A correct thermoseal, which ultimately determines the quality and impermeability of the package, depends on the length of time of the sealing, the compression of the jaws and the temperature used.


  • Chassis finish: AISI-316 stainless steel and anodized aluminium.
  • Maximum output: 110 cycles/min
  • Dimensions (mm): 2250 x 1557 x 1719 mm.
  • Approximate weight: 800 kg
  • Maximum reel width: 750 mm
  • Maximum reel diameter: 600 mm
  • Diameter of reel mandrel: 75 mm
  • Type of protection: IP 55
  • Power supply: 230/400VCA
  • Air consumption: 12 NI/cycle
  • Energy consumption: 5.5 KVA
  • Bag width: (min-max): 50-350 mm
  • Bag length (min-max): 40-500 mm


  • Equipped with the latest electronic and servo drive technology (Rockwell).
  • Servo drives on the pulling system and the sealing jaws.
  • BUS ETHERNET interface control.
  • 10” colour touch screen.
  • Incorporated Motion control drive systems.
  • Conveyor system powered by Becker vacuum pumps.
  • FESTO Pneumatics.
  • Temperature, time and sealing pressure controlled from touch screen.
  • Ability to memorize formats. Easy, quick change-over of forming parameters.


  • Safety system around jaw sealing unit.
  • Block bottom system.
  • Tilted tray at product output.
  • Macular detector for centering the length of the bag.
  • Manual coil alignment adjustable from the control panel.
Have any questions? Would you like further information about any of our machines? If so please contact us for the details.