The Influence of Different Sackpaper Porosity on Filling Performance

Related Vendors

TRM Filter d.o.o.

Donadon SDD Srl

Frewitt fabrique de machines SA

HAVER & BOECKER OHG - Drahtweberei

Comparison of Results

This table (Fig. 16) shows that the difference of the empty sack permeability is influencing the filling time. The increased pressure inside the sack during filling explains that low permeability paper will increase the risk of sack burst. Perforation is still a common way to have a sufficient venting of the bag, however the product which is coming out of the holes has a negative effect on the wear and tear of the mechanical equipment, the environment, working conditions, shelf live and packaging appearance as seen above in Fig. 15.

Gallery

Gallery with 18 images

The table shows that there is a direct interaction between the permeability of the empty sack and the filling time and pressure inside sack during filling (Fig. 17). That means that the paper porosity is directly influencing the output of a filling machine. The increasing pressure in the sack during filling causes also a higher risk of spillage with the result of heaving poor weight accuracy and dusty appearance of the filled sacks.

Summary

By evaluating the trials, the results of the study show that it is possible to optimise the filling process so that an improvement in filling time and cleanliness is achieved. The paper properties and the sack design have a considerable impact on filling speed and overall performance. Selecting the right paper quality and the number of paper layers, barrier techniques, or other sack design parameters requires knowledge, and the possibility for analysis to clearly quantify the relationships, and using this knowledge for optimising the filling system.

Haver & Boecker and Billerudkorsnäs have this knowledge and are able to conduct customer-related studies on the potential-to-optimise and to formulate suggestions for new solutions.

* Jonas Almkvist is Packaging Development Manager at Billerudkorsnäs AB, Sweden.

* *Thomas Hilling is Manager of the R & D Center auf Haver & Boecker, Germany.

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