Development of an Improved Blister Sheet and Pouched Overwrapper Package for Iodine Water Purification Tablets
COLUMBIA RESEARCH CORP GAITHERSBURG MD
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The development and pilot production of an improved blister sheet and pouched overwrapper package for the iodine water purification tablet is described. The blister sheets are fabricated from a fluorohalocarbon film containing 12 tablets with each tablet isolated by a heat sealed gridwork. A pressure sensitive label adheres to each blister sheet. This label is fabricated so that use instructions are on one side and a tablet gray color match is on the adhesive side to act as a tablet potency indicator. The pouch overwrapper is fabricated from a laminated film of Mylar- aluminum foil polyolefin and is designed to contain two blister sheets. Three major shortcomings of the initial flexible package have been corrected. The excessive amount of moisture entrapped within the labels when the blister sheets were sealed in the pouch has been eliminated by predrying the labeled blister sheets in a desiccant prior to pouching. Weak heat seals existing around corner blisters have been corrected by redesigning the blister sheet heat sealing tray to include larger sealing elements, installation of legs on the lower half of the tray for localized pressure application, and addition of ventilation holes to dispel residual heat buildup. High production cost primarily resulting from excessive fluorohalocarbon film scrap rate has been eliminated by modifying blister forming mold.
- Containers and Packaging
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