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Lidding material developed for silicone-coated trays.

Lidding material developed for silicone-coated trays. A medical-packaging-grade Tyvek lidding material forms a seal on PETG trays. Oliver Products Co. (Grand Rapids, MI; 800/253-3893) developed NP33/1073B, a nontoxic, hot-melt, heat-sealable adhesive coating. The coating is applied in a uniform-dot pattern through an exclusive DotCoat process. This process maintains the breathability of the 1073B. The resultant adhesive coating provides hot-tack and peelable seals with uniform

adhesive transfer on most rigid plastics. Tyvek is manufactured by DuPont (Wilmington,
DE; 800/441-7515).

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