Packaging Resource Center: The Latest in Films
A company has expanded its line of shrink-label films. It now offers Pentaprint E746/92 AS7, a high-clarity polyester film for full-body shrink-sleeve label and multipack applications. The film is designed to exhibit a low shrink force that allows for a more uniform application on contoured container configurations. It also features a low coefficient of friction and antidust properties. The film is suitable for flexographic and gravure printing processes and provides gauge control as well as seaming ability, ink-adhesion, and lay-flat properties. It can be used for products that are printed with 360° graphics where 60% shrinkage is sufficient. The company also offers vinyl shrink-label films. Klöckner Pentaplast of America Inc., Gordonsville, VA; 540/832-1427; www.kpafilms.com.
A film has been added to a company’s Aclar product portfolio that allows the end-user to see into packages that have previously featured opaque film. Aclar Flex is designed to simplify quality control and inspection, labeling processes, and product identification with its transparency. The film also is designed to lock out moisture and provide up to 10 times the barrier protection of transparent packaging films made of PVC and polypropylene. Three gauges of the film are offered. The company offers Aclar film as an alternative to foil laminates in flexible packaging where transparency and barrier properties can add to a package’s functionality and presentation. The film can be used alone or laminated to Capran Emblem, Medallion biaxially oriented nylon, OxyShield gas-barrier coextrusions, OPP, or PE. Honeywell International Inc., Morristown, NJ; 973/455-2000; www.honeywell.com.
A company offers thermoplastic films, laminations, coextrusions, and metallizing. It manufactures its own nylon, polyester, polypropylene, and other multiple-layer coextruded films. It also converts base films into multiple-layer structures. The Perfecflex product line includes clean-peel transfer films, laminated films, and converting films. The company is developing coextruded films with expanded uses as peelable webs with uncoated Tyvek and other substrates. The company also offers high-speed CI, flexographic, and rotogravure presses as well as slitting and finishing capabilities. Perfecseal, a div. of Bemis High Barrier Group, Oshkosh, WI; 920/303-7000; www.perfecseal.com.
Films coated with silicone on one or both sides are available in white, colored, or transparent versions. The Perlasic films can be treated with the same coating on both sides, or different coatings can be used. Various base material configurations are available, including substrates such as APET, LDPE, HDPE, cast PP, or PETP. These films are generally used to protect adhesive-coated surfaces and self-adhesive products. Perlen Converting, Whippany, NJ; 860/269-8630; www.perlenconverting.us.
Barrier Blister Films
A line of rigid films for medical packaging offers high moisture- and oxygen-barrier properties. The Tekniflex PGA and PGOA films’ multilayer constructions comprise PETG, EVOH, and PCTFE. The PETG used is Eastman Specialty Plastics’ Eastar 6763 copolyester, which is sterilizable by gamma or E-beam irradiation. It can be used in combination with a variety of lidding structures and offers a visual method of seal-integrity inspection through the blue tint of the sheet. Tekni-Films, a Tekni-Plex company, Somerville, NJ; 908/722-4800; www.tekni-films.com.
Corn-Based PLA Film
Two companies have partnered to develop corn-based polylactic acid (PLA) film as an alternative to oil-based films. Earthfirst PLA films are made from a natural, renewable, and sustainable resource to offer an alternative to traditional petroleum-based feedstocks. Shrink-label films and tamper-evident bands made from the PLA material are available. The material was designed to address concerns over the availability and cost of traditional materials. The film offers heat sealability, aroma barrier, scratch resistance, and ink adhesion. For label applications, the film is offered in clear, white, and matte and can be used in cut-and-stack or pressure-sensitive applications. The film is designed to provide good heat-seal strength to thermoformed PLA trays. The peelable seal range of the PLA film is from 250º to 300ºF. Process pressures and dwell times are minimal and can be as low as 20 psi with 0.25 seconds of dwell time. According to the manufacturer, making the resin used to manufacture the PLA film produces 44% less greenhouse gas emissions and requires 36% less use of oil. Gilbreth Packaging, Croydon, PA; 800/630-2413; www.gilbrethusa.com. Plastic Suppliers Inc., Columbus, OH; 866/378-4178; www.earthfirstpla.com.