Valves are designed to suit particular filling processes or product characteristics and will influence factors such as rate of output and the degree of ‘sift-proofness’ of the sack.

Where sacks are to be used on automatic filling lines, it is imperative that they are correctly constructed and geometrically true and flat in order to optimise the automated packing process.

Trials are recommended for new products and filling lines, to ensure the correct specification of valve type for the filling machinery in question.

Afripack's technical sales staff has the training, knowledge and experience to offer solutions on a wide range of packaging problems.