Abstract
The applicability of making a gift-wrapping paper fragrant by screen-printing with a varnish that contained microencapsulated fragrance were assessed. Experiments were conducted on a commercially available, general use, Lavender (Lavandula Angustifolia) essential oil. The encapsulation was made by a complex coacervating technique, with gelatin and gum-arabic as the wall materials. Factors in the encapsulating process were studied with the attempts to control the strength, the release and the morphologies of microcapsule. The statistical tools including the analysis of variance, the main effect plot, and the rolled throughput yield were used in identifying the controlling factors and the best performing conditions for encapsulation. Fragrant varnishes made by mixing the microcapsule into a commercially available UV-curable varnish were evaluated and optimized for the essential oil loading capacity, the release by rubbing with fingers, the protection against untimely release, and the load withstanding in handling, storage and transportation. All the practices specifically required to produce a fragrant gift-wrapping paper were done without the need to modify or to interfere with the actual screen-printing process. The overall results signified its potential in applications like special ordered or customized, small volume gift-wrapping papers, and the likes.
Published Version
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