CA3104954C - Humidity regulation liquid, environmental humidity regulating article and manufacturing method therefor - Google Patents
Humidity regulation liquid, environmental humidity regulating article and manufacturing method therefor Download PDFInfo
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- CA3104954C CA3104954C CA3104954A CA3104954A CA3104954C CA 3104954 C CA3104954 C CA 3104954C CA 3104954 A CA3104954 A CA 3104954A CA 3104954 A CA3104954 A CA 3104954A CA 3104954 C CA3104954 C CA 3104954C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/28—Selection of materials for use as drying agents
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
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Abstract
Disclosed are a humidity regulating liquid, an environment humidity regulating article and a manufacturing method therefor, which are used for coating on a base material so as to manufacture an environment humidity regulating article which regulates and controls the environment humidity to be in the range of 45-55%, comprising: at least one organic acid salt, at least one polyol and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the amount of carbon in the polyol is not more than 5, the mass fraction of the organic acid salt in the composition ranges from 30.6% to 58.8%, and the mass fraction of the polyol in the composition ranges from 9.3% to 26.7%; the manufacturing method includes the following steps: step 1, preparing a humidity regulating liquid; and step 2, coating the humidity regulating liquid on a base material.
Description
Humidity regulation liquid, environmental humidity regulating article and manufacturing method therefor FIELD OF THE INVENTION
The present invention relates specifically to a humidity regulation liquid, an environmental humidity regulating article and manufacturing method therefor.
BACKGROUND OF THE INVENTION
"Humidity" is an important factor that affects product packaging and storage life in all walks of life. Each product requires a reasonable humidity range to store. For example, camera lens requires to be stored within 45%-55% humidity range, the ambient humidity below the numerical value will make the rubber seal ageing, and the ambient humidity above the numerical value will make the lens foggy. The humidity to store products like wooden musical instruments is 45%-55%, the ambient humidity below the numerical value will cause wood deformation and may further affects the sound quality, and the ambient humidity above the numerical value will make wood moldy, or will make wood absorb a lot of moisture, causing the wood swell and damage wooden products.
In order to regulate the environmental humidity till within range 45%-55%, the common method is to use gel-type humidity regulation articles to regulate the environmental humidity. When using, the humidity regulate gel needs to be pre-balanced in a constant temperature and humidity chamber, and then the balanced humidity regulate gel is placed into the target environment. The balanced humidity regulate gel can absorb water vapor (absorb moisture) when the target environmental humidity is too high, and release water vapor (release moisture) when the humidity is too low, so that the humidity of the target environment is maintained within a certain range.
However, the above-mentioned humidity regulate gel has the following shortcomings: (I) the humidity regulate accuracy is poor so that the humidity of the target environment may fluctuate in a large range (for example, within the range of 10%) during use, and it is difficult to maintain a fixed humidity; (2) the production process consumes a lot of energy and produces a lot of waste water, which is not conducive to environmental protection; (3) the user needs to prepare a temperature and humidity chamber for the pre-balance of such a humidity regulate gel so the use cost is high, meanwhile the temperature and humidity chamber is volume-limited and it takes a long time to reach the humidity balance, which makes the gel inconvenient for use.
SUMMARY OF THE INVENTION
The present invention aims the above problems, and provides an environmental humidity regulating article with cheap raw materials, good humidity regulate Date Regue/Date Received 2020-12-23 performance, energy saving, and convenient use and a manufacturing method thereof with simple process. The present invention also provides a humidity regulation liquid contained in the humidity regulation article, and the humidity regulation liquid is also used to be coated to a substrate to manufacture the environmental humidity regulating article.
The present invention provides a humidity regulation liquid, used for coated onto a substrate to manufacture an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, characterized by comprising:
at least one kind of organic acid salt, at least one kind of polyols and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols in the humidity regulation liquid is 9.3%-26.7%.
The present invention also provides a manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, characterized by including the following steps:
step 1, prepare a humidity regulation liquid, mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid;
step 2, coat the humidity regulation liquid onto a substrate;
coat the substrate with the humidity regulation liquid of a coating speed of 1-15m/s at a predestined temperature no less than 40 C, and the humidity regulation liquid loaded onto the substrate is 0.54-0.74 g per cubic centimeter, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols in the humidity regulation liquid is 9.3%-26.7%.
The manufacturing method provided by the present invention could be further characterized by that, wherein the predestined temperature in step 2 is 45-55 C.
The manufacturing method provided by the present invention could be further characterized by that, wherein the weight percentage of the organic acid salt is 44.4 ¨46.2%, the weight percentage of the polyols is 13.3 ¨20.5%.
The manufacturing method provided by the present invention could be further characterized by that, wherein the organic acid salt is sodium lactate, the polyols is glycerol.
The manufacturing method provided by the present invention could be further characterized by that, wherein the organic acid salt is sodium lactate, the polyols is ethylene glycol.
The manufacturing method provided by the present invention could be further characterized by that, wherein the organic acid salt comprises two kinds, sodium lactate and potassium lactate, the polyols is ethylene glycol, the weight percentage of
The present invention relates specifically to a humidity regulation liquid, an environmental humidity regulating article and manufacturing method therefor.
BACKGROUND OF THE INVENTION
"Humidity" is an important factor that affects product packaging and storage life in all walks of life. Each product requires a reasonable humidity range to store. For example, camera lens requires to be stored within 45%-55% humidity range, the ambient humidity below the numerical value will make the rubber seal ageing, and the ambient humidity above the numerical value will make the lens foggy. The humidity to store products like wooden musical instruments is 45%-55%, the ambient humidity below the numerical value will cause wood deformation and may further affects the sound quality, and the ambient humidity above the numerical value will make wood moldy, or will make wood absorb a lot of moisture, causing the wood swell and damage wooden products.
In order to regulate the environmental humidity till within range 45%-55%, the common method is to use gel-type humidity regulation articles to regulate the environmental humidity. When using, the humidity regulate gel needs to be pre-balanced in a constant temperature and humidity chamber, and then the balanced humidity regulate gel is placed into the target environment. The balanced humidity regulate gel can absorb water vapor (absorb moisture) when the target environmental humidity is too high, and release water vapor (release moisture) when the humidity is too low, so that the humidity of the target environment is maintained within a certain range.
However, the above-mentioned humidity regulate gel has the following shortcomings: (I) the humidity regulate accuracy is poor so that the humidity of the target environment may fluctuate in a large range (for example, within the range of 10%) during use, and it is difficult to maintain a fixed humidity; (2) the production process consumes a lot of energy and produces a lot of waste water, which is not conducive to environmental protection; (3) the user needs to prepare a temperature and humidity chamber for the pre-balance of such a humidity regulate gel so the use cost is high, meanwhile the temperature and humidity chamber is volume-limited and it takes a long time to reach the humidity balance, which makes the gel inconvenient for use.
SUMMARY OF THE INVENTION
The present invention aims the above problems, and provides an environmental humidity regulating article with cheap raw materials, good humidity regulate Date Regue/Date Received 2020-12-23 performance, energy saving, and convenient use and a manufacturing method thereof with simple process. The present invention also provides a humidity regulation liquid contained in the humidity regulation article, and the humidity regulation liquid is also used to be coated to a substrate to manufacture the environmental humidity regulating article.
The present invention provides a humidity regulation liquid, used for coated onto a substrate to manufacture an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, characterized by comprising:
at least one kind of organic acid salt, at least one kind of polyols and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols in the humidity regulation liquid is 9.3%-26.7%.
The present invention also provides a manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, characterized by including the following steps:
step 1, prepare a humidity regulation liquid, mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid;
step 2, coat the humidity regulation liquid onto a substrate;
coat the substrate with the humidity regulation liquid of a coating speed of 1-15m/s at a predestined temperature no less than 40 C, and the humidity regulation liquid loaded onto the substrate is 0.54-0.74 g per cubic centimeter, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols in the humidity regulation liquid is 9.3%-26.7%.
The manufacturing method provided by the present invention could be further characterized by that, wherein the predestined temperature in step 2 is 45-55 C.
The manufacturing method provided by the present invention could be further characterized by that, wherein the weight percentage of the organic acid salt is 44.4 ¨46.2%, the weight percentage of the polyols is 13.3 ¨20.5%.
The manufacturing method provided by the present invention could be further characterized by that, wherein the organic acid salt is sodium lactate, the polyols is glycerol.
The manufacturing method provided by the present invention could be further characterized by that, wherein the organic acid salt is sodium lactate, the polyols is ethylene glycol.
The manufacturing method provided by the present invention could be further characterized by that, wherein the organic acid salt comprises two kinds, sodium lactate and potassium lactate, the polyols is ethylene glycol, the weight percentage of
2 Date Regue/Date Received 2020-12-23 the sodium lactate is 15.6 ¨45%, the weight percentage of the potassium lactate in the humidity regulation liquid is 10-30%, the total weight percentage of the sodium lactate and potassium lactate is 30.6-58.8%.
The manufacturing method provided by the present invention could further comprising: step 3, cut the substrate, cut the substrate into a predetermined size, the material of the substrate is any one of paper material, cotton cloth, chemical fiber material, non-woven fabric, felt, porous plastic, and mineral substrate.
The manufacturing method provided by the present invention could further comprise: step 4, package, pack the substrate loaded with the humidity regulation liquid with a package bag.
Also the present invention provides an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, characterized by being manufactured by anyone of above-mentioned manufacturing methods.
THE EFFECT OF THE PRESENT INVENTION
According to the humidity regulation liquid and environmental humidity regulating article of the present invention, the humidity regulation liquid is composed of organic acid salt, polyols and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols is 9.3%-26.7%. Therefore, the humidity regulation liquid of the present invention can be used to manufacture environmental humidity regulating article. The environmental humidity regulating article can regulate and maintain the environmental humidity within a certain humidity in a range of 45%-55%, and the humidity does not fluctuate during the maintenance process. On the other hand, the environmental humidity regulating article can regulate the environmental humidity directly after being directly placed in the target environment without being pre-balanced, so users do not need to prepare the humidity chamber, which makes it is convenient and fast for use with low cost.
In addition, in the manufacturing method of the environmental humidity regulating article of the present invention, since the temperature is not lower than 40 C during the preparation and coating process of the humidity regulation liquid, the solute is easy to dissolve and the solution is easy to coat. Moreover, there is a temperature difference between the coating process temperature and room temperature, once the coating process is completed and the article is placed to room temperature, the solute solubility of the humidity regulation liquid loaded onto the substrate will change, so that the solution changes from an unsaturated state to a saturated state and then produces fine crystals, making the humidity control article obtain a higher ability of moisture absorption and release, and obtain a better humidity control performance. Furthermore, the manufacturing method has the advantages of simple steps, low energy consumption and low cost.
BREIF DESCRIPTION OF THE DRAWINGS
The manufacturing method provided by the present invention could further comprising: step 3, cut the substrate, cut the substrate into a predetermined size, the material of the substrate is any one of paper material, cotton cloth, chemical fiber material, non-woven fabric, felt, porous plastic, and mineral substrate.
The manufacturing method provided by the present invention could further comprise: step 4, package, pack the substrate loaded with the humidity regulation liquid with a package bag.
Also the present invention provides an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, characterized by being manufactured by anyone of above-mentioned manufacturing methods.
THE EFFECT OF THE PRESENT INVENTION
According to the humidity regulation liquid and environmental humidity regulating article of the present invention, the humidity regulation liquid is composed of organic acid salt, polyols and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols is 9.3%-26.7%. Therefore, the humidity regulation liquid of the present invention can be used to manufacture environmental humidity regulating article. The environmental humidity regulating article can regulate and maintain the environmental humidity within a certain humidity in a range of 45%-55%, and the humidity does not fluctuate during the maintenance process. On the other hand, the environmental humidity regulating article can regulate the environmental humidity directly after being directly placed in the target environment without being pre-balanced, so users do not need to prepare the humidity chamber, which makes it is convenient and fast for use with low cost.
In addition, in the manufacturing method of the environmental humidity regulating article of the present invention, since the temperature is not lower than 40 C during the preparation and coating process of the humidity regulation liquid, the solute is easy to dissolve and the solution is easy to coat. Moreover, there is a temperature difference between the coating process temperature and room temperature, once the coating process is completed and the article is placed to room temperature, the solute solubility of the humidity regulation liquid loaded onto the substrate will change, so that the solution changes from an unsaturated state to a saturated state and then produces fine crystals, making the humidity control article obtain a higher ability of moisture absorption and release, and obtain a better humidity control performance. Furthermore, the manufacturing method has the advantages of simple steps, low energy consumption and low cost.
BREIF DESCRIPTION OF THE DRAWINGS
3 Date Recue/Date Received 2020-12-23 Fig. 1 is an electron microscope photograph of the environmental humidity regulating article according to embodiment 8 of the present invention.
Fig. 2 is a humidity regulation effect diagram of the environmental humidity regulating article according to the embodiment 8 of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
<Embodiment 1>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of 5-10m/s until the coating length reaches 3-10m, and the humidity regulation liquid loaded onto the substrate is 0.64 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is greater than 1 mm. The predetermined size can be set according to the needs of users, and can be from 1 cmx 1 cm to 100 cmx100 cm.
The substrate has a certain water absorption performance, and the water absorption of the substrate is not less than 100% of its own volume per cubic centimeter. The material of the substrate can be any one of paper material, cotton cloth, chemical fiber material, non-woven fabric, felt, and porous plastic. In this embodiment 1, the substrate is a kind of paper materials, cotton wood pulp paper. The water absorption performance of the cotton wood pulp paper is not less than 0.8 g per cubic centimeter, and the water retention performance is not less than 1.2 g per cubic centimeter. The thickness of the cotton wood pulp paper is 2mm to facilitate cutting operation.
The organic acid salt is sodium lactate, and the polyols is glycerol.
The weight percentage of sodium lactate is 30.6% ¨58.8%, and the weight percentage of glycerol is 9.3% ¨26.7%.
The purity of the sodium lactate is not less than 99.9%, and the purity of the glycerol is not less than 99.9%. The water is deionized water.
<Embodiment 2>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of
Fig. 2 is a humidity regulation effect diagram of the environmental humidity regulating article according to the embodiment 8 of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
<Embodiment 1>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of 5-10m/s until the coating length reaches 3-10m, and the humidity regulation liquid loaded onto the substrate is 0.64 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is greater than 1 mm. The predetermined size can be set according to the needs of users, and can be from 1 cmx 1 cm to 100 cmx100 cm.
The substrate has a certain water absorption performance, and the water absorption of the substrate is not less than 100% of its own volume per cubic centimeter. The material of the substrate can be any one of paper material, cotton cloth, chemical fiber material, non-woven fabric, felt, and porous plastic. In this embodiment 1, the substrate is a kind of paper materials, cotton wood pulp paper. The water absorption performance of the cotton wood pulp paper is not less than 0.8 g per cubic centimeter, and the water retention performance is not less than 1.2 g per cubic centimeter. The thickness of the cotton wood pulp paper is 2mm to facilitate cutting operation.
The organic acid salt is sodium lactate, and the polyols is glycerol.
The weight percentage of sodium lactate is 30.6% ¨58.8%, and the weight percentage of glycerol is 9.3% ¨26.7%.
The purity of the sodium lactate is not less than 99.9%, and the purity of the glycerol is not less than 99.9%. The water is deionized water.
<Embodiment 2>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of
4 Date Recue/Date Received 2020-12-23 1'-'5M/S until the coating length reaches 2-6m, and the humidity regulation liquid loaded onto the substrate is 0.74 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is 0.1-1 mm. The predetermined size can be set according to the needs of users, and can be from 2 cmx2 cm to 50 cmx50 cm.
The organic acid salt is sodium lactate, and the polyols is glycerol.
The weight percentage of sodium lactate is 44.4%-46.2%, and the weight percentage of glycerol is 13.3% ¨20.5%.
The purity of the sodium lactate is not less than 99.9%, and the purity of the glycerol is not less than 99.9%. The water is deionized water.
When the weight percentage of the sodium lactate and the glycerol are greater than the above-mentioned percentage ranges, crystallization is easy to occur in the solution, which needs high temperature to re-dissolve, resulting in high loss and making quality of the solution unstable. When the weight percentage of the sodium lactate and the glycerol are less than the above-mentioned percentage ranges, the humidity-regulating substance in the humidity-controlling solution loaded on the substrate will decrease, leading the humidity-regulating performance decreases.
<Embodiment 3>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of 10-15m/s at 40 C, the humidity regulation liquid loaded onto the substrate is 0.54 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is 0.1-1 mm. The predetermined size can be set according to the needs of users, and can be from 2 cmx2 cm to 50 cmx50 cm.
Step 4, package.
Pack the substrate loaded with the humidity regulation liquid with a package bag.
In this embodiment 3, the organic acid salt is sodium lactate, and the polyols is ethylene glycol.
The weight percentage of sodium lactate is 44.4%-46.2%, and the weight percentage of ethylene glycol is 13.3%-20.5%.
The purity of the sodium lactate is not less than 99.9%, and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
The substrate loaded with the humidity regulation liquid is held in the package bag. The package bag is made of thin film materials, which are permeable to water Date Recue/Date Received 2020-12-23 vapor but not to liquid solutions, such as non-woven fabrics, composite plastic bags, paper-plastic composite bags, and cloth bags. In this embodiment 3, the material of the package bag is non-woven fabric.
<Embodiment 4>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of 1-15m/s at not less than 40 C, and the humidity regulation liquid loaded onto the substrate is 0.64 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is 0.1-1 mm. The predetermined size can be set according to the needs of users, and can be from 2 cmx2 cm to 50 cmx50 cm.
In this embodiment 4, the organic acid salt is sodium formate, and the polyols is ethylene glycol.
The weight percentage of sodium formate is 44.4%-46.2%, and the weight percentage of ethylene glycol is 13.3%-20.5%.
The purity of the sodium formate is not less than 99.9%, and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
The substrate loaded with the humidity regulation liquid is held in the package bag. The package bag is made of thin polymer film materials, which are permeable to water vapor but not to liquid solutions. In this embodiment 4, the material of the package bag is polyester.
<Embodiment 5>
A manufacturing method for an environmental humidity regulating article, in which the specific steps are the same as the embodiment 1.
Wherein, the organic acid salt is potassium lactate, and the polyols is glycerol.
The weight percentage of potassium lactate is 44.4%-46.2%, and the weight percentage of glycerol is 13.3%20.5%.
The purity of the potassium lactate is not less than 99.9%, and the purity of the glycerol is not less than 99.9%. The water is deionized water.
<Embodiment 6>
A manufacturing method for an environmental humidity regulating article, in which the specific steps are the same as the embodiment 1.
Wherein, the organic acid salt is potassium lactate, and the polyols is ethylene glycol.
The weight percentage of potassium lactate is 44.4%-46.2%, and the weight Date Recue/Date Received 2020-12-23 percentage of ethylene glycol is 13.3%-20.5%.
The purity of the potassium lactate is not less than 99.9%, and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
<Embodiment 7>
A manufacturing method for an environmental humidity regulating article, in which the specific steps are the same as the embodiment 1.
Wherein, the organic acid salt is sodium lactate and potassium lactate, and the polyols is ethylene glycol.
The weight percentage of sodium lactate is 15.6%-45%, the weight percentage of potassium lactate is 10%-30%, and the weight percentage of ethylene glycol is 13.3%-20.5%.
The purity of the sodium lactate is not less than 99.9%, the purity of the potassium lactate is not less than 99.9% and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
Take the embodiment 2 as an example, the weight percentages of sodium lactate, glycerol and water for regulating different humidity in the humidity regulation liquid are shown in Table 1 below:
Table 1. The weight percentages of sodium lactate, glycerol and water for regulating different humidity in the humidity regulation liquid of embodiment Regulating Sodium lactate (%) Glycerol (%) H20 (%) humidity (%) 45 45.5 20.5 34.0 50 46.2 16.1 37.7 55 44.4 13.3 42.3 Take the environmental humidity regulating article in the embodiment 2 with a size of 0.42m2, a thickness of 0.3 cm and a weight of 1 kg, and regulate the environmental humidity of an 1 cubic meter airtight space (without external air exchange) with an initial humidity of 10%-90% at 25 C. The environmental humidity of the space can be regulated to a certain humidity within 45%-55% with a long-time regulating effective. If the air in the space is exchanged with the outside air with a humidity range of 80% for a long time, the effective time of humidity regulating is 1 month.
<Embodiment 8>
It is found by inventors that the humidity regulation liquid composed of at least one kind of organic acid salt, at least one kind of polyols and water in the above embodiments is an unsaturated solution at a certain temperature, and the unsaturated solution performs well properties of fluidity. In addition, the solubility of solutes such as organic acid salt and polyols used in the above-mentioned embodiments at different temperatures differs obviously. Therefore, in the process of coating the humidity regulation liquid to the substrate, if the solution is kept at the Date Regue/Date Received 2020-12-23 certain temperature, the coating process can proceed smoothly; further, after coating on the substrate, if the solution is gradually reduced till room temperature (20 C-25 C), the following phenomena will occur: as the temperature decreases, the solubility of the solute in the solution decreases, making the solution change from unsaturated to saturated, which in turn makes the solute in the solution (such as organic acid salt) form fine crystals, and the saturated solution containing fine crystals has a capacity of moisture absorption and release higher than other solutions, so that the environmental humidity regulating article has a good humidity regulating performance, and can quickly regulate and maintain the environmental humidity to a predetermined humidity.
Therefore, in the manufacturing methods of environmental humidity regulating articles of the above embodiment 1 to 7, the preparation in step 1 and coating process in step 2 are both performed under the condition of not lower than 40 C. This embodiment is an experiment to investigate the optimal temperature of the preparation and coating on the basis of above embodiments. The specific operation steps are the same as embodiment 1. At the same time, the formula of the humidity regulation liquid is the same as that in Table 1 for regulating humidity 50%, that is, the humidity regulation liquid of this embodiment is composed 46.2% weight percentage of sodium lactate, 16.1% weight percentage of glycerol, and 37.7%
weight percentage of water.
Also it is found by inventors that sodium lactate and glycerol are easier to dissolve between 40 C and 80 C, specifically: if it is lower than 40 C, the solids cannot be completely dissolved in the liquid solvent, and the obtained humidity regulation liquid contains fine particles and seems slightly turbid. If the temperature is higher than 80 C, the solvent (i.e., water) will partly volatilize, resulting in a composition ratio change of the humidity-conditioning liquid obtained after dissolution.
According to Table 1, such composition changes in the humidity regulation liquid will lead to regulating humidity (which is, target humidity of regulating), so that the environmental humidity regulating article cannot maintain the target environment near the regulating humidity.
In order to avoid such problems, the step 1 of this embodiment adopts the method of heating and dissolving between 40 C and 80 C, specifically: heating the water to 40 C, adding solids and then stirring while heating until the temperature reaches 80 C, keep the temperature and stir until all the solids are dissolved and the solution become uniform and transparent, and the humidity regulation liquid is obtained.
Then, the temperature of the humidity regulation liquid is regulated to a predetermined temperature, and the environmental temperature of the coating equipment is maintained at the predetermined temperature to perform the coating operation of step 2.
For step 2, this embodiment investigate the difference in the weight of the substrate before and after coating (i.e., the weight reduction) under the condition that the coating temperature is a predetermined temperature and the coating action lasts for a predetermined time. The specific results are shown in Table 2 below. In Table 2, 40 C, 45 C, 50 C, 55 C, 65 C, 75 C, 80 C, 85 C, 90 C are the predetermined Date Recue/Date Received 2020-12-23 temperatures for the coating process, 10min, 30min, 60min, 80min, 100min are the predetermined time of the coating operation lasts, and the percentage values in the table are the percentage of weight reduction of each coated substrate after it is lowered to room temperature (20 C ¨25 C).
Table 2. The relationship between solvent volatilization (%) and coating time at different predetermined temperatures 40r 45r 50r 55r 65r 75r 80r 85r 90r 10min 0 0 0 0 0 0 0.32% 0.64% 1.5%
30min 0 0 0 0 0 0.09% 0.89% 2.1% 4.7%
60min 0 0 0 0 0.14% 0.17% 1.78% 3.98% 8.2%
80min 0 0 0 0.1% 0.18% 0.25% 2.76% 5.76% 10.8%
100min 0 0 0 0.15% 0.23% 0.31% 3.8% 6.9% 13.7%
Due to the differences in the solubility of different solutes, when the solvent volatilization exceeds 5%, the weight percentage of the solute in the obtained saturated solution will change. If the weight percentage is changed, the environmental humidity regulating article cannot regulate the environmental humidity within 2% of the target humidity, and cannot achieve the humidity regulation requirements.
According to the solvent volatilization data shown in Table 2, when the predetermined temperature of the coating process is 85 C, the solvent volatilization exceeds 5%, and the humidity control article obtained in this way cannot meet the demand. Therefore, the predetermined temperature for coating should not exceed 80 C.
Further, the inventors also investigated the optimal range of the predetermined temperature for coating based on the actual conditions of the coating equipment of the prior art.
Specifically, the inventors tried two processes, roll coating and dip coating, to coat cotton wood pulp paper substrates of different thicknesses with the humidity regulation liquid of the above embodiments, and found that: for substrates of different sizes, under the premise of uniform coating, the maximum time required for roller coating and dip coating are generally within 80 minutes. Therefore, the coating process can generally be completed within 80 minutes. According to Table 2, when the predetermined temperature of the coating process is 60 C, the volatilization of the solvent within 80 minutes is almost zero. In addition, when the temperature difference between the predetermined temperature of the coating process and the room temperature is large, maintaining the predetermined temperature requires more energy, so the predetermined temperature should not be too high considering with energy consumption. Therefore, the lower limit of the optimum range of the predetermined temperature in the coating process is 55 C.
In addition, when the predetermined temperature is 40 , the humidity regulation liquid shows a high viscosity and is likely to crystallize during the coating process. It Date Regue/Date Received 2020-12-23 is difficult for the existing roll coating equipment or dip coating equipment to ensure uniform coating in this situation. When the predetermined temperature rises to 45 C, the humidity-conditioning liquid is transparent and the viscosity decreases, which makes the roll coating equipment or dip coating equipment can achieve uniform coating, so the lower limit of the optimal range of the predetermined temperature is 45 C.
In summary, the optimum temperature range for the coating operation obtained in this embodiment is 45 C to 55 C.
Fig. 1 is an electron microscope photograph of the environmental humidity regulating article according to embodiment 8 of the present invention.
Specifically, Fig. 1 selects the environmental humidity regulating article prepared under the conditions of the predetermined temperature of 50 C and the coating time of minutes in the coating process of this embodiment.
As shown in Fig. 1, in the environmental humidity regulating article obtained by the manufacturing method of this embodiment, the humidity regulation liquid forms fine crystals inside the substrate, and these crystals have relatively uniform particle size and relatively uniform distribution. At the same time, these crystals attach onto the fibers inside the substrate, so they are not easy to fall off.
Fig. 2 is a humidity regulation effect diagram of the environmental humidity regulating article according to the embodiment 8 of the present invention. In Fig. 2, the abscissa is time (day), and the ordinate is temperature (SC) and humidity (%).
Cut the environmental humidity regulating article corresponding to Fig. 1 into small pieces, take lOg and put into a closed container (the volume of the container is about 2L), and use a hygrometer to monitor and record the humidity in the container in real time. The result is shown in Fig. 2.
It can be seen from Fig. 2 that the initial humidity in the container is about 45%.
After putting the environmental humidity regulating article of this embodiment (the putting time is Ti), the humidity rises rapidly and reaches 50% in a very short time.
Subsequently, it has been maintained at 50% for a long time and the humidity hardly fluctuates during the process. After taking out the environmental humidity regulating article (the taking time point is T2), the humidity inside the container drops rapidly to close to the initial humidity because the inside of the container is connected to the outside world.
It can be seen that the environmental humidity regulating article of this embodiment can quickly regulate the environmental humidity to the target humidity, and can maintain the humidity for a long time without humidity fluctuations during the process.
The Effect of the embodiments According to the humidity regulation liquid and environmental humidity regulating article of the present embodiments, the humidity regulation liquid is composed of organic acid salt, polyols and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid Date Recue/Date Received 2020-12-23 salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols is 9.3%-26.7%. Therefore, the humidity regulation liquid of the present embodiments can be used to manufacture environmental humidity regulating article.
The environmental humidity regulating article can regulate and maintain the environmental humidity within a certain humidity in a range of 45%-55%, and the humidity does not fluctuate during the maintenance process. On the other hand, the environmental humidity regulating article can regulate the environmental humidity directly after being directly placed in the target environment without being pre-balanced, so users do not need to prepare the humidity chamber, which makes it is convenient and fast for use with low cost.
Moreover, the humidity regulation liquid in the environmental humidity regulating article of this embodiment uses common salts such as sodium lactate, potassium lactate and sodium formate, so the solution composed of these salts is not only low in cost, but also safe for the manufacture workers and environment.
When protecting lens or the wooden musical instruments, the compounds in the humidity regulation liquid of this embodiment will not corrode the lens or the musical instrument at all, so that the user can rest assured. Moreover, the environmental humidity regulating articles of these embodiment are only composed of organic acid salt, polyols, water and paper base material, so it is friendly to the natural environment after being discarded, and can be naturally decomposed without causing secondary pollution.
In addition, in the manufacturing method for the environmental humidity regulating articles of these embodiment, since the humidity regulation liquid is prepared at 40 C to 80 C, the solute is easily dissolved and the preparation operation is easy to complete; because the humidity regulation liquid is coated at a predetermined temperature of 45 C-55 C, so the solution is easy to coat for the low viscosity; further, because the solute solubility of the solute in the humidity regulation liquid changes after the coating is completed, so the humidity regulation liquid changes from the unsaturated state to the saturated state, which causes the fineness crystallization and makes the environmental humidity regulating article perform higher capacity of moisture absorption and release, and has well humidity control performance.
The foregoing embodiments are preferred cases of the present invention and is not used to limit the scope of protection of the present invention.
In the above embodiments, the polyol used in the manufacturing method of the present invention uses glycerol and ethylene glycol, but the same effect can be achieved when polyols with a carbon number not greater than 5 are used.
In the embodiments, the substrate is a kind of paper materials, cotton wood pulp paper. This kind of substrate is mainly made of wood pulp, cotton pulp, etc., so it has strong water retention and can absorb more liquid. In the present invention, the substrate can also be made of other similar materials, such as cotton cloth, chemical fiber materials, non-woven fabrics, felt, porous plastics, mineral substrates and the like.
Date Recue/Date Received 2020-12-23 In the embodiment, the package bag is made of a thin-walled material that is permeable to water vapor but not permeable to liquid solutions. In the present invention, small holes can also be provided on the package bag, and the speed of humidity adjustment can be changed by adjusting the number of small holes (for example, a large number of small holes can allow the environmental humidity regulating articles to contact the air in the environment faster, leading a quicker humidity regulation). Furthermore, other package ways can also be used in the present invention, for example, a protective film made of breathable material could be covered on the surface of the substrate coated with the humidity regulation liquid and lowered to room temperature, so that the humidity regulating article is of a larger size, which users can cut arbitrarily according to their needs, being more convenient to use.
Date Regue/Date Received 2020-12-23
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is 0.1-1 mm. The predetermined size can be set according to the needs of users, and can be from 2 cmx2 cm to 50 cmx50 cm.
The organic acid salt is sodium lactate, and the polyols is glycerol.
The weight percentage of sodium lactate is 44.4%-46.2%, and the weight percentage of glycerol is 13.3% ¨20.5%.
The purity of the sodium lactate is not less than 99.9%, and the purity of the glycerol is not less than 99.9%. The water is deionized water.
When the weight percentage of the sodium lactate and the glycerol are greater than the above-mentioned percentage ranges, crystallization is easy to occur in the solution, which needs high temperature to re-dissolve, resulting in high loss and making quality of the solution unstable. When the weight percentage of the sodium lactate and the glycerol are less than the above-mentioned percentage ranges, the humidity-regulating substance in the humidity-controlling solution loaded on the substrate will decrease, leading the humidity-regulating performance decreases.
<Embodiment 3>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of 10-15m/s at 40 C, the humidity regulation liquid loaded onto the substrate is 0.54 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is 0.1-1 mm. The predetermined size can be set according to the needs of users, and can be from 2 cmx2 cm to 50 cmx50 cm.
Step 4, package.
Pack the substrate loaded with the humidity regulation liquid with a package bag.
In this embodiment 3, the organic acid salt is sodium lactate, and the polyols is ethylene glycol.
The weight percentage of sodium lactate is 44.4%-46.2%, and the weight percentage of ethylene glycol is 13.3%-20.5%.
The purity of the sodium lactate is not less than 99.9%, and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
The substrate loaded with the humidity regulation liquid is held in the package bag. The package bag is made of thin film materials, which are permeable to water Date Recue/Date Received 2020-12-23 vapor but not to liquid solutions, such as non-woven fabrics, composite plastic bags, paper-plastic composite bags, and cloth bags. In this embodiment 3, the material of the package bag is non-woven fabric.
<Embodiment 4>
A manufacturing method for an environmental humidity regulating article used to regulate environmental humidity within 45%-55%, including the following steps:
Step 1, prepare a humidity regulation liquid.
Mix at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid.
Step 2, coat the humidity regulation liquid onto a substrate.
Coat the substrate with the humidity regulation liquid of a coating speed of 1-15m/s at not less than 40 C, and the humidity regulation liquid loaded onto the substrate is 0.64 g per cubic centimeter.
Step 3, cut the substrate.
Cut the substrate into a predetermined size. In this embodiment, the thickness of the substrate is 0.1-1 mm. The predetermined size can be set according to the needs of users, and can be from 2 cmx2 cm to 50 cmx50 cm.
In this embodiment 4, the organic acid salt is sodium formate, and the polyols is ethylene glycol.
The weight percentage of sodium formate is 44.4%-46.2%, and the weight percentage of ethylene glycol is 13.3%-20.5%.
The purity of the sodium formate is not less than 99.9%, and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
The substrate loaded with the humidity regulation liquid is held in the package bag. The package bag is made of thin polymer film materials, which are permeable to water vapor but not to liquid solutions. In this embodiment 4, the material of the package bag is polyester.
<Embodiment 5>
A manufacturing method for an environmental humidity regulating article, in which the specific steps are the same as the embodiment 1.
Wherein, the organic acid salt is potassium lactate, and the polyols is glycerol.
The weight percentage of potassium lactate is 44.4%-46.2%, and the weight percentage of glycerol is 13.3%20.5%.
The purity of the potassium lactate is not less than 99.9%, and the purity of the glycerol is not less than 99.9%. The water is deionized water.
<Embodiment 6>
A manufacturing method for an environmental humidity regulating article, in which the specific steps are the same as the embodiment 1.
Wherein, the organic acid salt is potassium lactate, and the polyols is ethylene glycol.
The weight percentage of potassium lactate is 44.4%-46.2%, and the weight Date Recue/Date Received 2020-12-23 percentage of ethylene glycol is 13.3%-20.5%.
The purity of the potassium lactate is not less than 99.9%, and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
<Embodiment 7>
A manufacturing method for an environmental humidity regulating article, in which the specific steps are the same as the embodiment 1.
Wherein, the organic acid salt is sodium lactate and potassium lactate, and the polyols is ethylene glycol.
The weight percentage of sodium lactate is 15.6%-45%, the weight percentage of potassium lactate is 10%-30%, and the weight percentage of ethylene glycol is 13.3%-20.5%.
The purity of the sodium lactate is not less than 99.9%, the purity of the potassium lactate is not less than 99.9% and the purity of the ethylene glycol is not less than 99.9%. The water is deionized water.
Take the embodiment 2 as an example, the weight percentages of sodium lactate, glycerol and water for regulating different humidity in the humidity regulation liquid are shown in Table 1 below:
Table 1. The weight percentages of sodium lactate, glycerol and water for regulating different humidity in the humidity regulation liquid of embodiment Regulating Sodium lactate (%) Glycerol (%) H20 (%) humidity (%) 45 45.5 20.5 34.0 50 46.2 16.1 37.7 55 44.4 13.3 42.3 Take the environmental humidity regulating article in the embodiment 2 with a size of 0.42m2, a thickness of 0.3 cm and a weight of 1 kg, and regulate the environmental humidity of an 1 cubic meter airtight space (without external air exchange) with an initial humidity of 10%-90% at 25 C. The environmental humidity of the space can be regulated to a certain humidity within 45%-55% with a long-time regulating effective. If the air in the space is exchanged with the outside air with a humidity range of 80% for a long time, the effective time of humidity regulating is 1 month.
<Embodiment 8>
It is found by inventors that the humidity regulation liquid composed of at least one kind of organic acid salt, at least one kind of polyols and water in the above embodiments is an unsaturated solution at a certain temperature, and the unsaturated solution performs well properties of fluidity. In addition, the solubility of solutes such as organic acid salt and polyols used in the above-mentioned embodiments at different temperatures differs obviously. Therefore, in the process of coating the humidity regulation liquid to the substrate, if the solution is kept at the Date Regue/Date Received 2020-12-23 certain temperature, the coating process can proceed smoothly; further, after coating on the substrate, if the solution is gradually reduced till room temperature (20 C-25 C), the following phenomena will occur: as the temperature decreases, the solubility of the solute in the solution decreases, making the solution change from unsaturated to saturated, which in turn makes the solute in the solution (such as organic acid salt) form fine crystals, and the saturated solution containing fine crystals has a capacity of moisture absorption and release higher than other solutions, so that the environmental humidity regulating article has a good humidity regulating performance, and can quickly regulate and maintain the environmental humidity to a predetermined humidity.
Therefore, in the manufacturing methods of environmental humidity regulating articles of the above embodiment 1 to 7, the preparation in step 1 and coating process in step 2 are both performed under the condition of not lower than 40 C. This embodiment is an experiment to investigate the optimal temperature of the preparation and coating on the basis of above embodiments. The specific operation steps are the same as embodiment 1. At the same time, the formula of the humidity regulation liquid is the same as that in Table 1 for regulating humidity 50%, that is, the humidity regulation liquid of this embodiment is composed 46.2% weight percentage of sodium lactate, 16.1% weight percentage of glycerol, and 37.7%
weight percentage of water.
Also it is found by inventors that sodium lactate and glycerol are easier to dissolve between 40 C and 80 C, specifically: if it is lower than 40 C, the solids cannot be completely dissolved in the liquid solvent, and the obtained humidity regulation liquid contains fine particles and seems slightly turbid. If the temperature is higher than 80 C, the solvent (i.e., water) will partly volatilize, resulting in a composition ratio change of the humidity-conditioning liquid obtained after dissolution.
According to Table 1, such composition changes in the humidity regulation liquid will lead to regulating humidity (which is, target humidity of regulating), so that the environmental humidity regulating article cannot maintain the target environment near the regulating humidity.
In order to avoid such problems, the step 1 of this embodiment adopts the method of heating and dissolving between 40 C and 80 C, specifically: heating the water to 40 C, adding solids and then stirring while heating until the temperature reaches 80 C, keep the temperature and stir until all the solids are dissolved and the solution become uniform and transparent, and the humidity regulation liquid is obtained.
Then, the temperature of the humidity regulation liquid is regulated to a predetermined temperature, and the environmental temperature of the coating equipment is maintained at the predetermined temperature to perform the coating operation of step 2.
For step 2, this embodiment investigate the difference in the weight of the substrate before and after coating (i.e., the weight reduction) under the condition that the coating temperature is a predetermined temperature and the coating action lasts for a predetermined time. The specific results are shown in Table 2 below. In Table 2, 40 C, 45 C, 50 C, 55 C, 65 C, 75 C, 80 C, 85 C, 90 C are the predetermined Date Recue/Date Received 2020-12-23 temperatures for the coating process, 10min, 30min, 60min, 80min, 100min are the predetermined time of the coating operation lasts, and the percentage values in the table are the percentage of weight reduction of each coated substrate after it is lowered to room temperature (20 C ¨25 C).
Table 2. The relationship between solvent volatilization (%) and coating time at different predetermined temperatures 40r 45r 50r 55r 65r 75r 80r 85r 90r 10min 0 0 0 0 0 0 0.32% 0.64% 1.5%
30min 0 0 0 0 0 0.09% 0.89% 2.1% 4.7%
60min 0 0 0 0 0.14% 0.17% 1.78% 3.98% 8.2%
80min 0 0 0 0.1% 0.18% 0.25% 2.76% 5.76% 10.8%
100min 0 0 0 0.15% 0.23% 0.31% 3.8% 6.9% 13.7%
Due to the differences in the solubility of different solutes, when the solvent volatilization exceeds 5%, the weight percentage of the solute in the obtained saturated solution will change. If the weight percentage is changed, the environmental humidity regulating article cannot regulate the environmental humidity within 2% of the target humidity, and cannot achieve the humidity regulation requirements.
According to the solvent volatilization data shown in Table 2, when the predetermined temperature of the coating process is 85 C, the solvent volatilization exceeds 5%, and the humidity control article obtained in this way cannot meet the demand. Therefore, the predetermined temperature for coating should not exceed 80 C.
Further, the inventors also investigated the optimal range of the predetermined temperature for coating based on the actual conditions of the coating equipment of the prior art.
Specifically, the inventors tried two processes, roll coating and dip coating, to coat cotton wood pulp paper substrates of different thicknesses with the humidity regulation liquid of the above embodiments, and found that: for substrates of different sizes, under the premise of uniform coating, the maximum time required for roller coating and dip coating are generally within 80 minutes. Therefore, the coating process can generally be completed within 80 minutes. According to Table 2, when the predetermined temperature of the coating process is 60 C, the volatilization of the solvent within 80 minutes is almost zero. In addition, when the temperature difference between the predetermined temperature of the coating process and the room temperature is large, maintaining the predetermined temperature requires more energy, so the predetermined temperature should not be too high considering with energy consumption. Therefore, the lower limit of the optimum range of the predetermined temperature in the coating process is 55 C.
In addition, when the predetermined temperature is 40 , the humidity regulation liquid shows a high viscosity and is likely to crystallize during the coating process. It Date Regue/Date Received 2020-12-23 is difficult for the existing roll coating equipment or dip coating equipment to ensure uniform coating in this situation. When the predetermined temperature rises to 45 C, the humidity-conditioning liquid is transparent and the viscosity decreases, which makes the roll coating equipment or dip coating equipment can achieve uniform coating, so the lower limit of the optimal range of the predetermined temperature is 45 C.
In summary, the optimum temperature range for the coating operation obtained in this embodiment is 45 C to 55 C.
Fig. 1 is an electron microscope photograph of the environmental humidity regulating article according to embodiment 8 of the present invention.
Specifically, Fig. 1 selects the environmental humidity regulating article prepared under the conditions of the predetermined temperature of 50 C and the coating time of minutes in the coating process of this embodiment.
As shown in Fig. 1, in the environmental humidity regulating article obtained by the manufacturing method of this embodiment, the humidity regulation liquid forms fine crystals inside the substrate, and these crystals have relatively uniform particle size and relatively uniform distribution. At the same time, these crystals attach onto the fibers inside the substrate, so they are not easy to fall off.
Fig. 2 is a humidity regulation effect diagram of the environmental humidity regulating article according to the embodiment 8 of the present invention. In Fig. 2, the abscissa is time (day), and the ordinate is temperature (SC) and humidity (%).
Cut the environmental humidity regulating article corresponding to Fig. 1 into small pieces, take lOg and put into a closed container (the volume of the container is about 2L), and use a hygrometer to monitor and record the humidity in the container in real time. The result is shown in Fig. 2.
It can be seen from Fig. 2 that the initial humidity in the container is about 45%.
After putting the environmental humidity regulating article of this embodiment (the putting time is Ti), the humidity rises rapidly and reaches 50% in a very short time.
Subsequently, it has been maintained at 50% for a long time and the humidity hardly fluctuates during the process. After taking out the environmental humidity regulating article (the taking time point is T2), the humidity inside the container drops rapidly to close to the initial humidity because the inside of the container is connected to the outside world.
It can be seen that the environmental humidity regulating article of this embodiment can quickly regulate the environmental humidity to the target humidity, and can maintain the humidity for a long time without humidity fluctuations during the process.
The Effect of the embodiments According to the humidity regulation liquid and environmental humidity regulating article of the present embodiments, the humidity regulation liquid is composed of organic acid salt, polyols and water, wherein the organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in the polyols is not greater than 5, the weight percentage of the organic acid Date Recue/Date Received 2020-12-23 salt in the humidity regulation liquid is 30.6%-58.8%, the weight percentage of the polyols is 9.3%-26.7%. Therefore, the humidity regulation liquid of the present embodiments can be used to manufacture environmental humidity regulating article.
The environmental humidity regulating article can regulate and maintain the environmental humidity within a certain humidity in a range of 45%-55%, and the humidity does not fluctuate during the maintenance process. On the other hand, the environmental humidity regulating article can regulate the environmental humidity directly after being directly placed in the target environment without being pre-balanced, so users do not need to prepare the humidity chamber, which makes it is convenient and fast for use with low cost.
Moreover, the humidity regulation liquid in the environmental humidity regulating article of this embodiment uses common salts such as sodium lactate, potassium lactate and sodium formate, so the solution composed of these salts is not only low in cost, but also safe for the manufacture workers and environment.
When protecting lens or the wooden musical instruments, the compounds in the humidity regulation liquid of this embodiment will not corrode the lens or the musical instrument at all, so that the user can rest assured. Moreover, the environmental humidity regulating articles of these embodiment are only composed of organic acid salt, polyols, water and paper base material, so it is friendly to the natural environment after being discarded, and can be naturally decomposed without causing secondary pollution.
In addition, in the manufacturing method for the environmental humidity regulating articles of these embodiment, since the humidity regulation liquid is prepared at 40 C to 80 C, the solute is easily dissolved and the preparation operation is easy to complete; because the humidity regulation liquid is coated at a predetermined temperature of 45 C-55 C, so the solution is easy to coat for the low viscosity; further, because the solute solubility of the solute in the humidity regulation liquid changes after the coating is completed, so the humidity regulation liquid changes from the unsaturated state to the saturated state, which causes the fineness crystallization and makes the environmental humidity regulating article perform higher capacity of moisture absorption and release, and has well humidity control performance.
The foregoing embodiments are preferred cases of the present invention and is not used to limit the scope of protection of the present invention.
In the above embodiments, the polyol used in the manufacturing method of the present invention uses glycerol and ethylene glycol, but the same effect can be achieved when polyols with a carbon number not greater than 5 are used.
In the embodiments, the substrate is a kind of paper materials, cotton wood pulp paper. This kind of substrate is mainly made of wood pulp, cotton pulp, etc., so it has strong water retention and can absorb more liquid. In the present invention, the substrate can also be made of other similar materials, such as cotton cloth, chemical fiber materials, non-woven fabrics, felt, porous plastics, mineral substrates and the like.
Date Recue/Date Received 2020-12-23 In the embodiment, the package bag is made of a thin-walled material that is permeable to water vapor but not permeable to liquid solutions. In the present invention, small holes can also be provided on the package bag, and the speed of humidity adjustment can be changed by adjusting the number of small holes (for example, a large number of small holes can allow the environmental humidity regulating articles to contact the air in the environment faster, leading a quicker humidity regulation). Furthermore, other package ways can also be used in the present invention, for example, a protective film made of breathable material could be covered on the surface of the substrate coated with the humidity regulation liquid and lowered to room temperature, so that the humidity regulating article is of a larger size, which users can cut arbitrarily according to their needs, being more convenient to use.
Date Regue/Date Received 2020-12-23
Claims (10)
1. A humidity regulation liquid, used for coated onto a substrate to manufacture an environmental humidity regulating article used to adjust environmental humidity within 45%-55%, characterized by comprising:
at least one kind of organic acid salt, at least one kind of polyols and water, wherein said organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in said polyols is not greater than 5, the weight percentage of said organic acid salt in said humidity regulation liquid is 30.6%-58.8%, and the weight percentage of said polyols in said humidity regulation liquid is 9.3%-26.7%.
at least one kind of organic acid salt, at least one kind of polyols and water, wherein said organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in said polyols is not greater than 5, the weight percentage of said organic acid salt in said humidity regulation liquid is 30.6%-58.8%, and the weight percentage of said polyols in said humidity regulation liquid is 9.3%-26.7%.
2. A manufacturing method for an environmental humidity regulating article used to adjust environmental humidity within 45%-55%, characterized by including the following steps:
mixing at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid; and coating said substrate with said humidity regulation liquid of a coating speed of 1-15m/s at a predestined temperature no less than 40 C, wherein said humidity regulation liquid loaded onto said substrate is 0.54-0.74 g per cubic centimeter, wherein said organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in said polyols is not greater than 5, the weight percentage of said organic acid salt in said humidity regulation liquid is 30.6%-58.8%, and the weight percentage of said polyols in said humidity regulation liquid is 9.3%-26.7%.
mixing at least one kind of organic acid salt, at least one kind of polyols and water at not less than 40 C to prepare a humidity regulation liquid; and coating said substrate with said humidity regulation liquid of a coating speed of 1-15m/s at a predestined temperature no less than 40 C, wherein said humidity regulation liquid loaded onto said substrate is 0.54-0.74 g per cubic centimeter, wherein said organic acid salt is at least one of sodium lactate, potassium lactate and sodium formate, the count of carbon in said polyols is not greater than 5, the weight percentage of said organic acid salt in said humidity regulation liquid is 30.6%-58.8%, and the weight percentage of said polyols in said humidity regulation liquid is 9.3%-26.7%.
3. The manufacturing method according to claim 2, characterized by that:
wherein said predestined temperature is 45-55 C.
wherein said predestined temperature is 45-55 C.
4. The manufacturing method according to claim 2, characterized by that:
wherein the weight percentage of said organic acid salt is 44.4%-46.2%, and the weight percentage of said polyols is 13.3-20.5%.
wherein the weight percentage of said organic acid salt is 44.4%-46.2%, and the weight percentage of said polyols is 13.3-20.5%.
5. The manufacturing method according to claim 2, characterized by that:
wherein said organic acid salt is sodium lactate, and said polyols is glycerol.
wherein said organic acid salt is sodium lactate, and said polyols is glycerol.
6. The manufacturing method according to claim 2, characterized by that:
wherein said organic acid salt is sodium lactate, and said polyols is ethylene glycol.
Date Recue/Date Received 2022-06-22
wherein said organic acid salt is sodium lactate, and said polyols is ethylene glycol.
Date Recue/Date Received 2022-06-22
7. The manufacturing method according to claim 6, characterized by that:
wherein said organic acid salt comprises two kinds, sodium lactate and potassium lactate, said polyols is ethylene glycol, the weight percentage of said sodium lactate is 15.6-45%, the weight percentage of said potassium lactate in said humidity regulation liquid is 10-30%, and the total weight percentage of said sodium lactate and potassium lactate is 30.6-58.8%.
wherein said organic acid salt comprises two kinds, sodium lactate and potassium lactate, said polyols is ethylene glycol, the weight percentage of said sodium lactate is 15.6-45%, the weight percentage of said potassium lactate in said humidity regulation liquid is 10-30%, and the total weight percentage of said sodium lactate and potassium lactate is 30.6-58.8%.
8. The manufacturing method according to claim 2, characterized by further comprising:
cutting said substrate into a predetermined size, wherein the material of said substrate is any one of paper material, cotton cloth, chemical fiber material, non-woven fabric, felt, porous plastic, and mineral substrate.
cutting said substrate into a predetermined size, wherein the material of said substrate is any one of paper material, cotton cloth, chemical fiber material, non-woven fabric, felt, porous plastic, and mineral substrate.
9. The manufacturing method according to claim 2, characterized by further comprising:
packing the substrate loaded with the humidity regulation liquid with a package b ag.
packing the substrate loaded with the humidity regulation liquid with a package b ag.
10. An environmental humidity regulating article used to adjust environmental humidity within 45%-55%, characterized by being manufactured by a manufacturing method according any one of claims 2-9.
Date Recue/Date Received 2022-06-22
Date Recue/Date Received 2022-06-22
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810700461.8 | 2018-06-29 | ||
| CN201810700453.3 | 2018-06-29 | ||
| CN201810697751.1 | 2018-06-29 | ||
| CN201810697751.1A CN108824075B (en) | 2018-06-29 | 2018-06-29 | Method for manufacturing article for adjusting environmental humidity |
| CN201810700461.8A CN108999020B (en) | 2018-06-29 | 2018-06-29 | Article for regulating environmental humidity |
| CN201810700453.3A CN108786391A (en) | 2018-06-29 | 2018-06-29 | composition for regulating environmental humidity |
| PCT/CN2019/093699 WO2020001620A1 (en) | 2018-06-29 | 2019-06-28 | Humidity regulating liquid, environment humidity regulating article and manufacturing method therefor |
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| CA3104954A1 CA3104954A1 (en) | 2020-01-02 |
| CA3104954C true CA3104954C (en) | 2023-04-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9123794D0 (en) * | 1991-11-08 | 1992-01-02 | Atkinson Stephen | Vapour absorbent compositions |
| CN101343850A (en) * | 2008-06-17 | 2009-01-14 | 上海衡元高分子材料有限公司 | Fibre conditioning plate |
| US8748723B1 (en) * | 2013-03-14 | 2014-06-10 | Boveda, Inc. | Humidity control system for wood products |
| CN108824075B (en) * | 2018-06-29 | 2020-11-10 | 上海衡元高分子材料有限公司 | Method for manufacturing article for adjusting environmental humidity |
| CN108999020B (en) * | 2018-06-29 | 2020-11-10 | 上海衡元高分子材料有限公司 | Article for regulating environmental humidity |
| CN108786391A (en) * | 2018-06-29 | 2018-11-13 | 上海衡元高分子材料有限公司 | composition for regulating environmental humidity |
-
2019
- 2019-06-28 CA CA3104954A patent/CA3104954C/en active Active
- 2019-06-28 WO PCT/CN2019/093699 patent/WO2020001620A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| CA3104954A1 (en) | 2020-01-02 |
| WO2020001620A1 (en) | 2020-01-02 |
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