Product Update: Finding Functional Films
The latest packaging films are intended to satisfy needs for moisture and oxygen barrier, among other requirements.
High-Barrier Medical Film
A new flexible film incorporating Aclar is available for medical packaging applications, including overwraps, pouches, and lidding. Aclar Flex film, a polychlorotrifluoroethylene fluoropolymer film, is a high-barrier transparent film that can offer up to 10 times the barrier of PVC or polypropylene, claims the manufacturer. Designed to resist flex cracking, the film is biochemically inert and free of plasticizers and stabilizers. It can be sterilized using an autoclave or other methods. Because of its transparency, the film allows labeling and other product details to be read through it, eliminating the need for overlabeling. Honeywell Specialty Materials, Morristown, NJ, 973/455-4908; www.honeywell.com.
High-Barrier Foil-Based Structure
An ultra high-barrier foil-based material is ideal for moisture- and oxygen-sensitive applications that require a foil lamination to meet or exceed shelf-life expectations. The Flexi 6611 features polyester/adhesive/aluminum-foil/ adhesive/clear polyethylene (outside to inside) to achieve optimal moisture vapor and oxygen permeability. Available in both rollstock and premade pouches, the Flexi 6611 has been engineered for excellent sealing and machinability. It is also ideal for drug delivery systems such as metered-dose inhalation devices and sensitive pharmaceuticals. Flexicon, Cary, IL; 847/639-3530; www.flexiconinc.net.
Security Blister Film
A provider of blister packaging films can integrate security elements directly into its films. Perlalux Identity films feature holographic material embedded between the different layers of the film, such as between PVdC and PVC. The converter claims that the addition of the security elements does not affect the properties of these films, including moisture-vapor transmission rate, oxygen barrier, shelf life, product safety, and processing qualities. Perlen Converting, Kennett Square, PA; 610/925-5101; www.perlen-converting.com.
A line of films is designed for pharmaceutical and nutraceutical products requiring outstanding moisture protection. Pentapharm Aclar 400/02 film is a two-layer (PVC/Aclar) laminated film that uses 4-mil Aclar to provide high moisture barrier in a thermoformable film. Intended for standard pharmaceutical blister packaging, deep-draw packages, and products that are ultra-sensitive to moisture, Pentapharm Aclar 400/02 film allows for clear packages and product visibility, making this film an attractive alternative to cold-form foil. The film is nonyellowing and offers machinability on existing standard form-fill-seal packaging lines and tooling. Klöckner Pentaplast of America, Gordonsville, VA; 540/832-3600; www.kpfilms.com.
Medical Packaging Resin
A company is using a copolyester material to develop a new range of high moisture- and oxygen-barrier rigid films for medical packaging applications. The copolyester material, chosen by the company for its clarity and high-barrier qualities, offers excellent thermoforming properties for complex medical trays and is unaffected by irradiation, according to the company. In addition, the material reportedly offers an easy method of package seal integrity inspection, because the seal is easily visible through the blue tint of the sheet. Tekni-Films, a Tekni-Plex Co., Somerville, NJ; 908/722-4800; www.tekni-films.com.