High-speed woven bag conversion machineBSW installs converTex SLC 120 at SadicoBSW Machinery, a subsidiary of Windmöller & Hölscher, has installed a high-speed woven bag conversion machine converTex SLC in Vietnam. The converTex, a PP block bottom valve bag conversion machine, allows production rates of 120 AD proTex bags a minute. Sadico, located in Can Tho in the South of Vietnam, is a well-established and recognized manufacturer of woven polypropylene sacks. A core product in Sadico’s portfolio is the cement sack made of woven PP. Sadico is an important supplier to prominent local and international cement companies in Vietnam.
In order to introduce a more sustainable solution for packaging, Sadico introduced the AD proTex bag design to the major cement manufacturers. This sack design is a superior alternative for the presently used sewn-type 3-ply and 2-ply sack, made from a combination of paper and woven PP.
The converTex SLC valve bottomer produces both single ply and 2-ply AD proTex sacks and fulfils the substantial requirements on cement sacks in the Vietnamese marketWith the newly installed converTex SLC Sadico is able to produce both single ply and 2-ply AD proTex sacks and fulfils the substantial requirements on cement sacks in the Vietnamese market. The AD proTex sack will not only allow lighter bags and reduced material consumption but will also avoid sewing or gluing of the sack with adhesives. The Windmöller & Hölscher patent allows Sadico to seal a block-bottom valve sack with the usage of hot air instead. This results in very sustainable sack production with no compromise on sack quality and strength.
“The installation and start-up of the machine was much easier and faster than we expected. It was nearly a plug-and-play process – within no time we were able to produce the sacks for our customers. This was the result of the excellent team work between Sadico and BSW engineers,” says chairman and general director, Nguyen Phu Tho.
“We are permanently running at full speed with the converTex, and all that with the usage of locally available resins and raw materials. The responses from our clients are very positive, and so is our outlook,” adds vice general director, Nguyen Van Cuong.
“Through the excellent support from the local sales team we were able to convince our customers to change to the AD proTex sack even faster and this upgrade of our production line is certainly bringing us on a new quality and efficiency level,” says Phu Tho. Together with the converTex Sadico also invested in the extrusion coating line ecoTex 1600L and advanTex circular weaving looms. “Altogether, we are very satisfied with the performance and the operations of the equipment supplied by BSW.”
The converTex SLC is the newest development in a long standing tradition of bottomer man-ufacturing. Since Windmöller & Hölscher engineered the first converTex way back in 1994 about 300 machines have been installed worldwide. While the first machine generation was able to reach a production rate of up to 30 bags a minute, the new SLC is now capable of producing 120 bags a minute. The machine is good for the Asian market and can produce both 1-ply and 2-ply sacks including the use of paper or film in