Humidity control system
A humidity control system includes a humectant system including a humectant material including a viscous miscible glycerol and water mix and a humectant package.
1. A humidity control system comprising:
a humectant package;
a humectant material comprising:
a viscous miscible glycerol; and
water; and
a coating coated on an inner surface of the humectant package and between the humectant package and the humectant material, the coating comprising polyethylene, oriented polystyrene, a porous polyethylene resin, polyurethane, a polyether block amide, and/or a polymeric mixture comprising a hydrophilic monomer.
2. The humidity control system of claim 1 , wherein the coating has a thickness of between about 0.001 inch and 0.01 inch.
3. The humidity control system of claim 2 , wherein the thickness of the coating is 0.001 inch.
4. The humidity control system of claim 1 , wherein the water vapor transmission rate of the humectant system is between about 16 g/100 sq. in/day and about 42 g/100 sq. in/day.
5. The humidity control system of claim 1 , wherein the humectant material further comprises a gelling agent.
6. The humidity control system of claim 5 , wherein the gelling agent comprises gelatin, xanthan, alginate and/or pectin.
7. The humidity control system of claim 5 , wherein the humectant material comprises between about 70% to about 90% by weight glycerol.
8. The humidity control system of claim 7 , wherein the humectant material comprises:
25% by weight the water;
1% by weight the gelling agent; and
74% by weight the glycerol.
9. The humidity control system of claim 7 , wherein the humectant material comprises:
20% by weight the water;
1% by weight the gelling agent; and
79% by weight the glycerol.
10. The humidity control system of claim 7 , wherein the humectant material comprises between about 0.9% and about 1.1% by weight of the gelling agent.
11. The humidity control system of claim 1 , further comprising a humidity indicating card affixed to a surface of the humectant package by an adhesive.
12. The humidity control system of claim 11 , wherein the adhesive comprises glue, hot melt adhesive, single-sided tape, double-sided tape and/or adhesive backing.
13. The humidity control system of claim 11 , further comprising a security device.
14. The humidity control system of claim 13 , wherein the security device comprises a radio frequency identification tag and/or an electronic article surveillance tag.
15. The humidity control system of claim 13 , wherein the security device is affixed to the humectant package by a second adhesive.
16. The humidity control system of claim 15 , wherein the second adhesive comprises at least one of a double-sided tape, a single-sided tape, a printed tag, an adhesive backing, and a hot melt adhesive.
17. The humidity control system of claim 12 , wherein the adhesive comprises hot melt adhesive.
18. The humidity control system of claim 1 , wherein the coating adhesively joins together opposing sides of the humectant package.
19. The humidity control system of claim 1 , wherein the coating comprises the polyether block amide.