Flow Pack GSP 65 TR BB with bottom coil. Used and reconditioned horizontal packaging machine, suitable for packaging long-life products.

Welding on the bottom of the product

This type of flow pack packaging machine carries out a sealing at the top and at the end of the package thanks to the transversal sealer and a longitudinal seal under the product along the entire length. The result obtained is the typical flow pack that we are used to seeing in brioches.

Variable tunnel

The variable tunnel is a forming tunnel designed to be able to have greater flexibility than a fixed tunnel. Through simple adjustments it is possible to vary the width and height in order to be able to package smaller or larger products. However, it is not possible to change the diagonals of the film inlet plowshares, this limits the use to products of not too different dimensions. For example, it will be difficult to pack a packet of crackers and a tub of peaches with the same tunnel.

Scissor and translating sealer

The other large family of sealers is that of scissor sealers, some also called translating, which perform a hermetic seal and are therefore designed for packages that require Modified Atmosphere (MAP).
In this case, the two jaws close and couple with each other moving vertically, exactly as happens in a press or vice. This movement allows to define a constant welding pressure for as long as necessary.
This type of sealer does not allow high packaging speeds, generally they never exceed 40 pieces per minute (ppm) unless the sealing bar is equipped with a translating movement (box motion) which allows to speed up the waiting time for arrival. of the products by physically moving the entire sealing unit towards the product and back. In this case, the packaging speeds are able to rise up to about 60 ppm, bringing the translating flow pack to a speed similar to that of a rotary press.

MAP

The Modified Atmosphere Packaging (MAP) is the process by which an inert gas, generally nitrogen, is inserted inside the package, replacing the presence of oxygen. By doing so, the food product inside the flow pack bag will have a longer shelf life and consequently can be stored more easily for a longer period of time.
To pack in MAP it is necessary that the packaging machine is translating or rotary with Long Dwell sealer and that it has the predisposition for the connection of the gas cylinders and the gas injection system.
The flow pack packaging machine can be set up for packaging in MAP through a normal flow meter or through a Dan Sensor system with mixer and analyzer. The Dan Sensor system complete with mixer and analyzer allows to have a constant control over the amount of gas in relation to the oxygen that is present in each package, guaranteeing precision and safety that otherwise cannot be obtained. However, this system is mounted only on high quality and high cost packaging machines because it is a particularly expensive system.