Ixan® PVDC Extrusion Resins
Ixan® PVDC extrusion grades of barrier resins provide long-lasting protection for advanced packaging and medical film solutions, maximizing customer satisfaction with minimum risk. Barrier film packaging solutions, for both vacuum or MAP technology, are a reliable choice for achieving long shelf-life for packaging of fresh meats, processed meats, fresh/frozen fish, poultry and cheese, along with excellent pack appearance.
Barrier films made with Ixan® PVDC extrusion resins are unique in their combination of properties which include transparency, high shrinkage, excellent water vapor and oxygen barrier, flavor and aroma barrier, microwavebility, good mechanical resistance and toughness.
In medical applications such as ostomy bags, this allows patients to lead an active life in the sure knowledge that there will be no leakage.
Multi-layer films using Ixan® PVDC copolymers are manufactured using both cast and blown film process technology. The versatile property profile of Ixan® PVDC grades offers the possibility to satisfy complex packaging requirements by simplifying film structures to only 3-5 layers.
Food Packaging and Wrap Film
For both modified atmosphere packaging (MAP) and vacuum packaging, there is a common need for very high barrier materials that can prevent contact with outside air and invasive bacteria, reduce internal water loss, and improve health and meat safety. Ixan® PVDC high-barrier packaging materials meet these requirements.
Meat packaging Ixan® PVDC resins and ready-to-use premixes can be extruded and co-extruded to films (heat shrinkable or not), and to thermoformable sheets.
Multilayer films containing Ixan® PVDC and Diofan® PVDC take full advantage of their exceptional barrier properties to prevent the ingress of undesired oxygen while providing ideal ripening conditions and full flavor formation that can be perfectly aligned according to the type of cheese.
Extruded mono film with Ixan® PVDC and Diofan® PVDC-coated substrates can both be used in sausage casings to provide excellent shelf-life and low weight losses during storage and distribution. This is due to their excellent and reliable gas and water vapor barrier properties, even in humid conditions. Other advantages include controlled shrink, resistance against heat and high mechanical stress, and suitability for pasteurization.
Ixan® PVDC can be combined with plasticised or semi-rigid PVC, whether medium or high molecular weight, in the manufacture of cling film for wrapping food products. Such films offer low permeability to steam and oxygen to keep foods such as meat and cheese fresh, along with high clarity, good puncture resistance, elasticity and recovery. This type of film is made at very high speed in extrusion processes.
Thin, clingy plastic films could be made of Ixan® PVDC, which are known for providing superior barrier properties versus all other food wrapping solutions, including protection from aroma losses and off-flavor transfer. These films are the benchmark for food protection in food wrapping.
Ixan® High Barrier Polymer Resins are used for making barrier films for reliably safe ostomy pouching systems. These bags are highly sophisticated, and consist of medical grade plastic films which must meet several criteria:
- Mechanical strength
- Seam strength
- Gas & odor barrier
In addition, they must not irritate the skin and must make the least possible noise so as not to draw attention to the wearer.
|Ixan® PVDC (high-barrier polymer) Product Range|
|Ixan® PVS 109||A ready-to-process Ixan® PVDC premix for the coextrusion of high barrier films (heat shrinkable or not) in food packaging and for medical film applications.|
|Ixan® PVS 119||A PVDC-based blend for extrusion and coextrusion of barrier films for food packaging and medical films. It is recommended for applications that require a very good oxygen and water vapor barrier.|
|Ixan® PVS 801||A ready-to-process Ixan® PVDC blend for the coextrusion of barrier films with controlled permeability, e.g. for cheese packaging.|
Ixan® PVDC grades can be processed by extrusion or coextrusion equipments using dedicated machine designs for the converting of this class of high barrier polymers. Construction materials for the machines must have high corrosion resistance such as X-Alloy, Colmonoy, Hastelloy or Duranickel.
Available extrusion and multi layer coextrusion process technologies include cast films and blown films.
Shown here is the “double bubble” process for biaxial orientation.
Solvay Specialty Polymers also offers ready-to-use premixes.
Premixing: Extrusion grades must be blended with additives such as processing aids, heat stabilizers, plasticizers, and/or pigments.
Ixan® PVDC Soluble Resins
Dissolved Ixan® PVDC resins are used as adhesion primers, heat-sealing lacquers and print-ink binder on various substrates. Cellulose and PET films (plain or metallized) and aluminium foils are coated with soluble Ixan® PVDC grades without the necessity of applying an adhesion promoter.
Ixan® PVDC soluble resins are excellent adhesion primers with barrier functionality on aluminum, metallized films and substrates, plastic films, paper, cellulose film, steel and wood. They are suitable for subsequent coating with Diofan® PVDC dispersions, the aqueous range for barrier coatings from Solvay.
Ixan® PVDC soluble resins can be used as binders in print-inks and in lacquer formulations as well as for heat-sealable protective varnishes.
Ixan® PVDC aluminum coating grades can be used to make foils reliably seal to themselves or to other webs, such as plastic foils, without losing barrier properties.
Uncoated aluminum foils cannot be sealed together by any technique. With the Ixan® aluminum coating grade you can make the foils reliably seal to themselves or to other webs such as plastic foils without losing barrier.
In view of its characteristics of adherence, water resistance, and chemical inertness, Ixan SGA 1 makes an excellent ink binder for printing on various substrates. The broad range of usable solvent systems for this resin allow the manufacturers to control the drying properties.
Heat-sealable varnishes protect your printed surface from chemical and mechanical attack.
- Ixan® PVDC Soluble Resin
- Ixan® SGA-1 : A specialty copolymer based on vinylidene chloride and vinyl chloride monomers. The unrivalled performance of Ixan® PVDC SGA-1 is due to the combination of its outstanding adhesion characteristics combined with barrier properties. It can be used as a primer on a wide range of substrates, offering binding capabilities for print inks and paints, as well as protective varnishes. In addition to barrier properties, Ixan® PVDC SGA-1 provides chemical resistance for coatings and coverings along with heat-sealability, transparency, and glossiness for coatings. This grade is soluble in a wide range of common organic solvents at room temperature.