초록

A humidity control device for use in maintaining a desired humidity, the device including a protective case, a water vapor permeable pouch and a thickened saturated solution, the solution having a suitable humidity control point.

대표청구항 ▼

[ What is claimed is:] [1.] A humidity control device for use in a stringed instrument case for maintaining a desired humidity, said device including a protective case, a water vapor permeable pouch and a thickened saturated salt solution, said case comprising wall means defining an enclosure, said

[ What is claimed is:] [1.] A humidity control device for use in a stringed instrument case for maintaining a desired humidity, said device including a protective case, a water vapor permeable pouch and a thickened saturated salt solution, said case comprising wall means defining an enclosure, said wall means including a plurality of openings through which water vapor may freely move, said pouch being formed of a thin wall polymer film through which water vapor may pass, said thickened saturated salt solution comprising water, salt and a thickening agent, said salt being present in an amount between 20 and 75 percent by weight based on the weight of the combination of water and salt, said thickening agent being present in an amount sufficient to thicken the salt solution, said thickened saturated salt solution being contained within the polymeric pouch and sealed from escape from the pouch, said pouch containing the thickened saturated salt solution being contained within the protective case to protect the pouch from rupture.