Vertical Form Fill and Seal Machine
Waterproof bags for Concrete Pre-mix, Mortars, Sand, Aggregates, Grout, Lime and Gypsum
For more than a decade Kockums Bulk Systems have represented B&C based Italy who engineer and manufacture automatic Form Fill & Seal Machines (FFS) for filling plastic bags with granular or dusty products. The range comprises of three convention FFS machines covering the different bag sizes and a large Baling machine which is also capable of filling conventional bags.
The bags start as a pre-printed flat roll of film which is loaded on the back of the filling machine. The film is simply fed through a series of rollers to the bag forming tube. Multiple forming tubes can be hung on the machine for quick bag size changeover. Once the film is formed into the bag shape, it is heat sealed closed at the back and bottom whilst the product is measured by weight or volume, and fed into the bag. The full bag is the shaken and the top seal and cut (at this time the bottom of the bag above is sealed).
When handling Cementous type materials de-aeration is a key factor. B&C have developed a labyrinth type seal arrangement allowing the material within to deaerate but still maintaining the waterproof bag characteristic. This also allows the bags to be stored outside minimising material waste due to weathering.