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US 2002/0160035 A1Published application
Devices and methods for the release of volatile substances and applications thereof
OwnerSpiros Fotinosinventor
Life of this patent
Estimating the term…
Abstract
A patch delivers a volatile substance to an environment. The patch provides the volatile substance within a solid layer positioned between a breathable layer and a barrier layer. A release liner is removably adhered to the barrier layer. The solid layer may be formed by mixing the volatile substance with a liquid agent that forms a solid below 40° C. The liquid mixture is applied to the breathable layer and allowed to solidify. The other layers are added thereto.
Claims22
A patch, comprising:
- a breathable layer;
- a barrier layer;
- an effective amount of a volatile agent within a solid layer, the solid layer positioned between the breathable layer and the barrier layer, wherein the barrier layer is impermeable to the volatile agent;
- and
- a release liner removably adhered to the barrier layer.
2 more elements
A method of making a patch for release of volatile substances, comprising:
- mixing a volatile substance with a liquid agent, wherein the agent forms a solid below 40° C. and is capable of forming a liquid above 45° C. and below 90° C.;
- applying the liquid mixture of step(a) onto a breathable layer and permitting the liquid to form a solid;
- preparing a barrier layer for adhesive attachment to the breathable layer and solid;
- laminating the barrier layer by adhesion to the solid and the breathable layer;
- and
- laminating a release liner by adhesion to the barrier layer.
3 more elements
Dependencies are inferred from the claim text.