CONVERTEX CL 140 produces 65 gram woven PP bags at record speed


Windmöller & Hölscher announced yet another milestone in woven PP bag production. The new converTex CL 140 by far exceeds the speed of all other bottomers for cross bottom bags on the market. The first machine is in production since July and successfully produces one hundred and forty 65 gram woven PP cement bags per minute 24 hours a day.

Windmöller & Hölscher spearheaded many innovations in woven PP. One of the fundamental developments was the CONVERTEX, which heat seals woven PP cross bottom bags and thus eliminates the need of glue for this type of bags. Also today CONVERTEX forms the backbone of the extensive portfolio of Windmöller & Hölscher in the woven PP business. During the last 10 years the output of the bottomer was more than doubled: from 60 bags per minute to 140 in the last model. This speed represents the technological leadership in this type of equipment.

Designed for the specific needs of cement bags the CL 140 represents a special execution of the proven SLC 120. While the SLC 120 is a universal sack bottomer for up to 120 bags per minute depending on the size and format the CL 140 addresses the need for extra fast and efficient production of cement sacks. To make the machine even more efficient it was geared for extra low bag weights.

The new technology in the CONVERTEX series makes it possible to convert even lightest fabric into quality bags. Lighter fabric saves on resources like material and energy and thus provides significant cost advantages to the bag producer. To this end Windmöller & Hölscher has developed the LS (Lighter & Stronger) technology. High quality PP tapes with tenacity up to 7 g/den and indexed microperforation provide the technological tools to be able to produce e.g. cement bags with a weight of 65 grams instead of the current global market standard of 80 grams.

At the Windmöller & Hölscher booth at K 2016 65 gram bags were produced at the rate of 140 bags per minute in live presentations. The visitor response was very positive.

The importance and potential of the woven PP bag market for W&H is underlined by renaming its subsidiary BSW Machinery, the specialist for woven PP, into W&H Machinery – completing the inte-gration of the the woven PP portfolio into the international W&H Group.