Application Description

Thanks to DuPont™ Surlyn®, the Amcor OptiSur structure for vacuum thermoformed packages offers a high quality structure and a cost competitive solution to both the  fresh and processed sausage meat  industry.

Its main performance is a strong secondary sealing that avoids leakers and negative, visual aspects. No liquid or blood can flow around the pack, preventing potential bacteria growth in the liquid. Secondary sealing is a short thermal process given to the closed vacuum pack, using steam, hot air or hot water. The heat and the strength of the vacuum creates a second seal on all the film areas of the pack where there is no product, therefore reducing the possibilities for punctures and vacuum losses.

The other benefits of Surlyn® used in this Amcor OptiSur structure are:

• Complete seal integrity, even if water, brine or fat spots occur in the sealing area
• Low temperature seal initiation which allows higher production speeds
• Glossier films than with polyethylene alternatives
• Meat adhesion, which reduces the separation of meat juices inside the pack and helps retain the pack shape
• Cost effectiveness of the overall solution thanks to the greater stiffness and sealability of Surlyn® compared to polyethylene

"On such products", says Fernando Lista, Amcor Flexibles  Sales Manager, "the secondary seal gained by using Surlyn® in the OptiSur structure gives an even greater advantage over and above the usual high performance properties achieved with Surlyn®". OptiSur is mainly used in vacuum packs for Frankfurter sausages but it can also be used for other kinds of meat products with a high level of water activity and therefore a strong risk of serum or blood loss over time".

Because DuPont cannot anticipate or control the many different conditions under which this information and/or product may be used, it does not guarantee the applicability or the accuracy of this information or the suitability of its products in any given situation. Users of DuPont products should make their own tests to determine the suitability of each such product for their particular purposes. The data listed herein falls within the normal range of product properties but they should not be used to establish specification limits or used alone as the basis of design.

Disclosure of this information is not a license to operate or a recommendation to infringe a patent of DuPont or others.