Patent ID: 6746750
Filing Date: 2004-06-08
Classification: A45D,Y10S,Y10T

Abstract:
A substantially planar closed envelope device comprising a material having vapor barrier properties, which envelope comprises a base layer and a cover layer applied to the base layer and a continuous or discontinuous seal therebetween, wherein:a. each of the base and cover layers has an opposed face and carries a fluid composition containing a liquid volatile material upon a selected area of the opposed faces thereof; b. the base and cover layers are formed from a single piece of sheet material that is folded over so as to bring the selected areas of the base and cover layers into opposing register with one another; and c. the seal comprises a separable and reformable seal between the base and cover layers to retain the base layer and cover layer in the folded configuration; and wherein the base and cover layers are formed from a sheet material that comprises substantially congruent pieces of material linked by a bridging piece about which the circular pieces are folded so as to bring them into opposed register with each other.