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Humidity control system for wood products

A technology of humidity control and control agent, applied in separation methods, instruments, dispersed particle separation, etc., can solve the problems of low moisture transfer and small use.

Inactive Publication Date: 2016-01-13
BOVEDA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, an aqueous solution of calcium chloride, magnesium chloride, or glycerin can be used to control humidity between 40%-60%, but the MTC is only about 15%-20% of the package weight
Additionally, moisture control systems employing solid substrates such as silica gel or water-absorbing organic polymers such as acrylamide can be formulated to a specific relative humidity; however, these systems are characterized by low moisture transmission and are critical for maintaining controlled less useful in humid environments

Method used

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  • Humidity control system for wood products
  • Humidity control system for wood products

Examples

Experimental program
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Effect test

Embodiment 1

[0036] In a preferred embodiment of the present invention, the sodium formate saturated aqueous solution comprising potassium acetate is prepared as follows: 470 gram sodium formate is added 355 gram water and 170 gram and contain the potassium acetate solution of 50% potassium acetate and 50% water (weight), Xanthan gum DaniscoSM (3 g) was dispersed in the resulting mixture. The mixture was heated to 160°F (71.1°C) and then cooled to 120°F (48.9°C). Inject this solution into the Membrane (DuPont) (thick 1.5x10 -3 inches) in pouches. The pH was 8.9 and the relative humidity was 53% (water activity 0.53). When placed in a dry atmosphere (10% RH) in a guitar case, the device released 32% solution weight of moisture before reaching the 40% RH limit. When placed in a humid atmosphere (85% RH), this solution absorbed moisture in an amount of 15% by weight of the sachet contents before reaching an upper limit of 60% RH (0.60 water activity). These results were very satisfactor...

Embodiment 1A

[0038] A saturated aqueous solution of sodium formate containing potassium acetate was prepared as follows: 470 g of sodium formate was added to 355 g of water and 170 g of potassium acetate solution (50% water), as described in Example 1. Heat this mixture to 100°F (37.8°C) and add 35 grams 200 Hydrophilic Fumed Silica (Eronik), and mix well. The pH was 7.2 and the humidity was 52% (water activity 0.52). The water release and uptake properties of this formulation were similar to Example 1 when exposed to equivalent environmental conditions. This humidity control system has also passed the Odey outgassing performance test.

Embodiment 1B

[0040] In addition to adding 60 grams of alumina ( Alu130) fumed alumina (Eronik) instead Otherwise, a saturated aqueous solution of sodium formate containing potassium acetate was prepared exactly as described in Example 1A. The pH is 8.7 and the water activity is 0.52. The properties of this solution were essentially the same as in Example 1A. This humidity control system has passed the Odeo outgassing performance test.

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Abstract

A humidity control device for use in maintaining the desired humidity for wood musical instrument, art objects and museum artifacts, the device including a water vapor permeable pouch and a saturated aqueous solution having a suitable humidity control point for use with these objects.

Description

[0001] Related Application Cross Reference [0002] Not applicable [0003] Statement Regarding Federally Funded Research and Development [0004] Not applicable Background technique [0005] I. Field of Invention [0006] The present invention relates generally to the protection of wood-containing items, such as museum artifacts and musical instruments, by controlling the humidity in the storage environment of such items. [0007] II. Related technologies [0008] Depending on the temperature and the humidity of the storage environment, wood products in closed storage will absorb and release moisture. Unfortunately, as moisture levels change, wood shrinks and swells, often permanently changing the physical properties and appearance of stored wood products, and possibly causing damage to them. For example, it is well known that in cold climates, especially in polar latitudes, indoor moisture levels are very low, and low humidity causes wood products to shrink to potential...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/26B01D53/28B01D53/30
CPCB01D53/263B01D53/268B01D53/28G10G7/00
Inventor D·C·艾戈伯格R·L·埃瑟
Owner BOVEDA INC
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