Packaging Resource Center: The Latest in Lidding & Trays

Recyclable Lidding
A high-performance, 100%-polyester lidding alternative is available for medical, pharmaceutical, and food applications. StreamOne has been engineered to replace traditional mixed-polymer laminates without sacrificing performance when sealing to polyethylene terephthalate (PET) or polyethylene terephthalate glycol (PETG) trays. Because the material is made entirely from polyester, it can be recycled in the “number one” stream, along with the tray. Traditional laminated combinations can only go in the “number seven” or “other” stream. Also, StreamOne lidding represents a downgauge of 50% when compared with traditional structures. (These structures are typically 2.5 mil thick, comprised of 0.5 mil polyester and 2 to 3 mils of sealant.) StreamOne lidding is available in thicknesses between 1 and 2 mil, with 1 mil PET and 0.5 mil proprietary polyester peelable sealant. StreamOne lidding can be used for a broad spectrum of gamma-sterilized medical device products such as catheters, syringes, IV connector sets, etc. Rollprint Packaging Products Inc., Addison, IL; 512/869-6620;

Custom Trays
A medical device contract manufacturer and packager offers its material and tooling expertise for medical-grade tray projects. All facets of a custom tray project, including design, development, in-house tooling fabrication, and process validation, are performed within a single quality system at its manufacturing location in New Hampshire. Certified to ISO 13485:2003 standard, the company can provide prototype packages for performance testing and can support all development, validation, and sterilization requirements. Various processes including vacuum thermoforming can be used to form medical-grade trays from sheet and roll stock. In addition, contract filling and sealing of various tray/lid stock combinations in a cleanroom environment are available. J-Pac LLC, Somersworth, NH; 603/692-9955;

Secondary Trays
Recycled PET (RPET) can be used as secondary packaging for medical products. Consisting of a guaranteed 50% postconsumer content and 85% total recycled content, EcoStar PC50 is designed for use as secondary packaging when the primary package provides sterility. Applications include use as clamshells, in-process trays, vial accountability trays, and glucose meter packaging. EcoStar PC50 can be tinted or provided with UV resistance. Another material also suitable for medical environments is EcoStar HS 1000 material, which consists of a guaranteed 35% post-consumer content. The material can be used along with film or paper lidstock on form-fill-seal lines for packaging such items as syringes. It can also be used with RF or ultrasonic sealing equipment. The company claims that RPET offers cost savings when compared with using virgin PET or PETG. Placon Corp., Madison, WI; 800/541-1535;

Freeze-Drying Protection
A nonparticulating box protects freeze-drying trays during shipment. The new box, made of polypropylene, allows the trays to be packed inside the manufacturing cleanroom. Developed for use with Gore Lyoguard Freeze-Drying Products, the box allows more flexibility in packing and unpacking in respective manufacturing facilities. W. L. Gore & Associates Inc., 800/368-4673;

PVC for Trays and Clamshells
A developer and designer of packaging materials has introduced polyvinyl chloride (PVC) replacements.
EnviroSeal and UltrosRenu materials can be used for RF tear, bar, and heat-seal blister and clamshell packaging for medical and other products. They contain comparable physical performance properties to PVC and meet a broad cross-section of PVC-based applications. According to the company, UltrosRenu 90 Clear, 90 Blend, and 90 Blue Tint are produced with the industry’s highest-quality recycled PETG materials, delivering a material yield advantage over PVC. Spartech Corp., Clayton, MO; 314/889-8330;

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