Starlinger - AD*STAR technology for block bottom valve sacks

The AD*STAR® sack is made of coated or BOPP film laminated polypropylene fabric and can be produced either as valve or open mouth block bottom sack in a one- or two-layer design. It surpasses all comparable products as far as resistance to breakage is concerned, and is versatile as well as eco-friendly and economic. In 1993, Starlinger started the development of a new sack concept. The idea of the AD*STAR® sack was to combine the advantages of the traditional sack types known by then: • the brick shape and suitability for automatic handling of a paper bag • the tightness and flexibility of a PE film bag • the strength and resistance of a woven polypropylene bag Only a few months later, in 1994, a patent application was filed for this ground-breaking concept of a one-layer block bottom valve bag made of stretched and woven polypropylene tapes and produced without the use of glue, only by applying hot air and pressure. Shortly after the concept was published, the first two AD*STAR® conversion lines were sold in 1996. Since then, Starlinger has improved both the sack and the production machinery with each generation. Tear-proof and easy to handle The AD*STAR® sack takes its strength from the characteristics of the raw material and the special production technique. This combination is what enables the AD*STAR® sack to protect its valuable contents even under rough conditions. Unlike other means of packaging, the AD*STAR® sack is resistant to dropping, bending, and squeezing, and keeps its full strength when exposed to water or humidity. Even with rough handling AD*STAR® sacks do not rip open. Due to their strength and block shape AD*STAR® sacks can be stacked up to the roof and therefore save valuable One sack for various products storage area. In addition, their attractive appearance makes for almost unlimited marketing possibilities. Another important feature that has helped to further the acceptance of the AD*STAR® sack is that it is easy to handle. When using AD*STAR® sacks on existing filling lines, no adjustments are needed for manual filling stations, and only minor adjustments are required for automatic ones. It goes without saying that the AD*STAR® sack is suited to high speed filling and automatic palletizing.

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