WO2020001619A1 - 涂布液、环境湿度调节物品及其制造方法 - Google Patents

涂布液、环境湿度调节物品及其制造方法 Download PDF

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Publication number
WO2020001619A1
WO2020001619A1 PCT/CN2019/093698 CN2019093698W WO2020001619A1 WO 2020001619 A1 WO2020001619 A1 WO 2020001619A1 CN 2019093698 W CN2019093698 W CN 2019093698W WO 2020001619 A1 WO2020001619 A1 WO 2020001619A1
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Prior art keywords
humidity
mass fraction
ranges
substrate
coating solution
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PCT/CN2019/093698
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English (en)
French (fr)
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沈跃华
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上海衡元高分子材料有限公司
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Priority claimed from CN201810700475.XA external-priority patent/CN108816006A/zh
Priority claimed from CN201810700464.1A external-priority patent/CN108842509B/zh
Priority claimed from CN201810700463.7A external-priority patent/CN109051340B/zh
Application filed by 上海衡元高分子材料有限公司 filed Critical 上海衡元高分子材料有限公司
Priority to CA3105123A priority Critical patent/CA3105123C/en
Publication of WO2020001619A1 publication Critical patent/WO2020001619A1/zh

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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
    • 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

Definitions

  • the invention particularly relates to an environmental humidity-adjusting article, a coating liquid for coating and manufacturing the environmental humidity-adjusting article, and a manufacturing method.
  • “Humidity” is an important factor affecting product packaging and storage shelf life in various industries. Each product requires a reasonable humidity range for storage. For example, the storage humidity of cigar products is about 69%, and the environmental humidity below this value will cause the moisture in the cigar's internal space to be too low, which will accelerate the aging of tobacco; if the environmental humidity is higher than this value, it will cause the cigar to spoil, and then cause the cigar. Flavor damage.
  • the storage humidity of some seeds is about 65 to 75%. Ambient humidity lower than this value will cause the seeds to become too dry and worms will occur. Ambient humidity higher than this value will cause the seeds to become hot and moldy and thus lose the vitality of the seeds.
  • the humidity of frozen meat and other foods should be kept between 65% and 75%. If the ambient humidity is lower than this value, the food will dry out. If the ambient humidity is higher than this value, the food will become sticky and slippery, which will promote the growth of bacteria and accelerate food. Deterioration.
  • the traditional method is to use a gel-type humidity-controlling article to humidify the environment.
  • the humidity-controlling gel needs to be pre-equilibrated in a constant temperature and humidity box, and then the balanced humidity-controlling gel is placed in the target environment.
  • the balanced humidity-controlling gel can absorb moisture (absorb moisture) when the humidity of the target environment is too high, and release moisture (humidity) when the humidity is too low, so that the humidity of the target environment is maintained within a certain range.
  • the above-mentioned humidity-controlling gel has the following disadvantages: (1) the humidity-controlling accuracy is poor, and the humidity of the target environment may fluctuate within a relatively large range (for example, within a range of ⁇ 10%) during use, and it is difficult to maintain near a fixed humidity (2) The energy consumption in the production process is high, and a large amount of wastewater is generated, which is not conducive to environmental protection; (3) The user needs to be equipped with a constant temperature and humidity box in order to use such a humidity conditioning gel, so the use cost is high, and The volume is limited, and the time required to reach the humidity balance is also long, which is very inconvenient to use.
  • the present invention is made in order to solve the above problems, and the object is to provide an environmental humidity adjustment article with simple process, cheap raw materials, good humidity control performance, energy saving and convenient use, and a manufacturing method thereof.
  • the present invention also provides a coating liquid (ie, a coating liquid) for preparing an environmental humidity-adjusting article in the manufacturing method.
  • the invention provides a coating solution for coating on a substrate to prepare an environmental humidity regulating article with an environmental humidity of 65 to 75%, which is characterized by comprising: at least one chloride salt and water, Wherein, the chloride salt is at least one of NaCl, NH 4 Cl, KCl, and MgCl 2.
  • the mass fraction of the chloride salt in the composition ranges from 12 to 29.75%.
  • the invention also provides a method for manufacturing an environmental humidity-adjusting article, which is used to manufacture an environmental humidity-adjusting article that controls the ambient humidity to 65-75%, and is characterized by including the following steps:
  • Step one configure the coating solution
  • Step two coating the coating liquid on the substrate
  • the substrate is coated in the coating solution at a speed of 1 to 15 m / s at normal temperature, so that 0.81 to 1.11 grams of the coating solution are supported per cubic centimeter of the substrate;
  • the substrate carrying the coating solution is continuously subjected to microwave drying, so that 0.54 to 0.74 g of the humidity-conditioning composition is carried in each cubic centimeter of the substrate,
  • the chloride salt is at least one of NaCl, NH 4 Cl, KCl, and MgCl 2 ,
  • the mass fraction of the chloride salt ranges from 12 to 29.75%.
  • the mass fraction of the chloride salt ranges from 18 to 44.6%
  • step three the microwave drying condition is that the substrate is dried at a speed of 1 to 3 m / min at 15 to 25 KW.
  • the manufacturing method of the environmental humidity regulating article provided by the present invention may further have such technical characteristics, wherein the humidity regulating composition includes a chloride salt, and the chloride salt is NaCl.
  • the quality of the chloride salt is The range of the fraction is 12 to 26.8%.
  • the range of the mass fraction of the chloride salt is 18 to 40.2%.
  • the method for manufacturing an environmental humidity-adjusting article provided by the present invention may further have such technical characteristics, wherein the humidity-conditioning composition includes two kinds of chloride salts, and one kind of chloride salt is any one of KCl and NH 4 Cl, Another chloride salt is NaCl.
  • the mass fraction of NaCl ranges from 7 to 16%.
  • the mass fraction of NH 4 Cl ranges from 5 to 13.75%.
  • the mass fraction of KCl ranges from 2 to 10.5%
  • the mass fraction of NaCl ranges from 10.5 to 24% in the humidity control composition
  • the mass fraction of NH 4 Cl ranges from 7.5% to 20.6% in the humidity control composition.
  • the mass fraction of KCl ranges from 3 to 15.75%.
  • the method for manufacturing an environmental humidity-adjusting article provided by the present invention may further have such technical characteristics, wherein, in the coating liquid, the mass fraction of NaCl ranges from 11 to 15%, and in the coating liquid, the mass of NH 4 Cl The fraction range is 8-12%. In the coating solution, the mass fraction range of KCl is 3-8%. In the humidity control composition, the mass fraction range of NaCl is 16.5% to 22.5%. The mass fraction of NH 4 Cl ranges from 12 to 18%. In the humidity control composition, the mass fraction of KCl ranges from 4.5 to 12%.
  • the method for manufacturing an environmental humidity-adjusting article provided by the present invention may further have such technical characteristics, wherein, in the coating solution, the mass fraction of NaCl ranges from 14 to 14.8%, and in the coating solution, the mass of NH 4 Cl The fraction range is 10 to 11.4%. In the coating solution, the mass fraction range of KCl is 5 to 7.4%. In the humidity control composition, the mass fraction range of NaCl is 21 to 22.6%. The mass fraction of NH 4 Cl ranges from 15 to 17.1%. In the humidity control composition, the mass fraction of KCl ranges from 7.5 to 11.1%.
  • the method for manufacturing an environmental humidity regulating article provided by the present invention may further have such technical characteristics, wherein the humidity regulating composition includes two kinds of chloride salts, one kind of chloride salt is KCl and the other kind of chloride salt is MgCl 2
  • the mass fraction of MgCl 2 ranges from 6 to 17%.
  • the mass fraction of KCl ranges from 3 to 15%.
  • the total mass fraction of all chloride salts The range is 12 to 29.75%.
  • the mass fraction of MgCl 2 is 9 to 25.5%.
  • the mass fraction of KCl is 4.5 to 22.5%.
  • the total mass fraction of all chloride salts is in the range of 18 to 44.6%.
  • the method for manufacturing an environmental humidity regulating article provided by the present invention may further have such technical features, and further includes:
  • 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 method for manufacturing an environmental humidity regulating article provided by the present invention may further have such technical features, and further includes:
  • a wrapping bag is used to contain and wrap the substrate carrying the humidity-controlling composition.
  • the present invention also provides an environmental humidity adjustment article for controlling the environmental humidity adjustment to 65 to 75%, which is characterized in that it is manufactured by using the environmental humidity adjustment article manufacturing method according to any one of the above.
  • the mass fraction of the chloride salt in the coating liquid ranges from 12 to 29.75%.
  • the score range is 18 to 44.6%. Therefore, the method for manufacturing an environmental humidity adjustment article of this embodiment has the ability to manufacture an environmental humidity adjustment article that controls the environmental humidity adjustment to 65 to 75%, and the humidity adjustment articles of different formulas in this range can The target environment is accurately maintained at a predetermined humidity.
  • the environmental humidity regulating article of this embodiment only contains common chloride salts.
  • the composition prepared by using these chloride salts is not only low-cost, but also safe for the human body, the environment, and the object to be stored during manufacture.
  • the environmental humidity-conditioning article manufactured by the method for manufacturing an environmental humidity-conditioning article in this embodiment is also friendly to the natural environment after being discarded, and can be naturally decomposed without causing secondary pollution.
  • the method for manufacturing an environmental humidity-adjusting article adopts a microwave drying method to perform dehydration.
  • the microwave drying can realize quantitative dehydration, and the coating solution can be converted into a dehumidification amount of a humidity-controlling composition Control is easier, and the prepared humidity-adjusting articles can have the advantages of stable performance and faster humidity adjustment.
  • FIG. 1 is a linear relationship diagram between the rotation speed of the equipment and the dehydration amount according to the ninth embodiment of the present invention
  • FIG. 3 is a photograph of a substrate coated with a coating solution of Comparative Example 1 of the present invention after being dried in a hot air oven;
  • Example 4 is a photo of a substrate coated with a coating solution after microwave drying according to Example 10 of the present invention.
  • FIG. 5 is an electron microscope photograph of the substrate of FIG. 4;
  • FIG. 6 is a humidity adjustment effect diagram of a humidity adjustment article according to Embodiment 10 of the present invention.
  • a method for manufacturing an environmental humidity-adjusting article which is used for manufacturing an environmental humidity-adjusting article that controls the environmental humidity to 65 to 75%, including the following steps:
  • Step one configure the coating solution
  • At least one chloride salt and water are configured as a humidity-controlling liquid at a temperature of not lower than 40 ° C.
  • This humidity-controlling liquid is used for coating on a base material to manufacture a humidity-adjusting article.
  • this humidity-controlling liquid is referred to as a coating liquid.
  • Step two coating the prepared coating solution on the substrate
  • the substrate is coated in the coating solution at a speed of 1 to 15 m / s at normal temperature, so that 0.81 to 1.11 g of the coating solution is supported per cubic centimeter of the substrate.
  • the base material is cut so that the base material reaches a predetermined size.
  • the thickness of the base material is greater than 2 mm.
  • the predetermined size is set according to user requirements, and can be from 20 mm ⁇ 20 mm to 200 mm ⁇ 300 mm.
  • the substrate carrying the coating liquid after cutting is continuously subjected to microwave drying, so that 0.54 to 0.74 g of the humidity-controlling composition is carried in each cubic centimeter of the substrate.
  • the microwave drying condition is that the substrate is dried at a speed of 1 to 3 m / min at 15 to 25 KW.
  • the substrate has a certain water absorption performance.
  • the water absorption performance of the substrate is not less than 100% of its own volume per cubic centimeter.
  • 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 substrate is cotton-wood pulp paper in a paper material.
  • the cottonwood pulp paper has a water absorption performance of at least 0.8 grams per cubic centimeter of substrate, and a water retention performance of at least 1.2 grams per cubic centimeter of substrate.
  • the thickness of the cottonwood pulp paper was 2mm. .
  • the chloride salt is NaCl.
  • the mass fraction of NaCl ranges from 12 to 26.8%.
  • the mass fraction of NaCl ranges from 18 to 40.2%.
  • the purity of NaCl is not less than 99.9%. Water is deionized water.
  • a method for manufacturing an environmental humidity-adjusting article which is used for manufacturing an environmental humidity-adjusting article that controls the environmental humidity to 65 to 75%, including the following steps:
  • Step one configure the coating solution
  • At least one kind of chloride salt and water were prepared as a coating liquid at 45 ° C.
  • Step two coating the coating liquid on the substrate
  • the substrate was coated in the coating solution at a speed of 1 to 5 m / s at normal temperature, so that 1.11 g of the coating solution was supported per cubic centimeter of the substrate.
  • the substrate carrying the coating solution after cutting was continuously subjected to microwave drying, so that 0.74 g of the humidity-controlling composition was carried per cubic centimeter of the substrate.
  • the microwave drying condition is that the substrate is dried at a speed of 1 to 3 m / min at 15 to 25 KW.
  • the base material is cut so that the base material reaches a predetermined size.
  • the thickness of the base material ranges from 0.1 to 1 mm.
  • the predetermined size is set according to the needs of the user, and can be from 2 cm ⁇ 2 cm to 50 cm. ⁇ 50cm.
  • the chloride salt includes KCl and NaCl.
  • the mass fraction of NaCl ranges from 7 to 16%
  • the mass fraction of KCl ranges from 2 to 10.5%.
  • the mass fraction of NaCl in the composition ranges from 10.5 to 24%, and the mass fraction of KCl in the composition ranges from 3 to 15.75%.
  • the purity of NaCl and KCl are both food pure (purity is not less than 99.9%). Water is deionized water.
  • the mass fraction of NaCl and KCl in the coating solution is larger than the fraction range, crystals are easily generated in the composition, high temperature is required to dissolve the crystals, the loss is large, and the quality of the composition is unstable;
  • the mass fraction is less than the fraction range, the subsequent microwave drying process takes longer, not only the drying effect is not good, but the humidity conditioning performance will be reduced.
  • a method for manufacturing an environmental humidity-adjusting article which is used for manufacturing an environmental humidity-adjusting article that controls the environmental humidity to 65 to 75%, including the following steps:
  • Step one configure the coating solution
  • At least one kind of chloride salt and water were prepared as a coating liquid at 40 ° C.
  • Step two coating the coating liquid on the substrate
  • the substrate was coated in the coating solution at a speed of 10 to 15 m / s at normal temperature, so that 0.81 g of the coating solution was supported per cubic centimeter of the substrate.
  • the substrate carrying the coating solution after cutting was continuously subjected to microwave drying, so that 0.54 g of the humidity-controlling composition was carried per cubic centimeter of the substrate.
  • the microwave drying condition is that the substrate is dried at 20 KW at a speed of 2 m / min.
  • the conditions for microwave drying are that the substrate is dried at a speed of 1 to 3 m / min at 15 to 25 KW.
  • the base material is cut so that the base material reaches a predetermined size.
  • the thickness of the base material ranges from 0.1 to 1 mm.
  • the predetermined size is set according to the needs of the user, and can be from 2 cm ⁇ 2 cm to 50 cm. ⁇ 50cm.
  • a wrapping bag is used to contain and wrap the substrate carrying the humidity-controlling composition.
  • the wrapping bag is a small bag made of a breathable material with a size suitable for the substrate after cutting, and a plurality of breathable small holes are provided on the bag.
  • the chloride salt includes NH 4 Cl and NaCl.
  • the mass fraction of NaCl ranges from 7 to 16%, and the mass fraction of NH 4 Cl ranges from 5 to 13.75%.
  • the mass fraction of NaCl in the composition ranges from 10.5 to 24%, and the mass fraction of NH 4 Cl in the composition ranges from 7.5% to 20.6%.
  • the purity of NaCl is food pure (purity is not less than 99.9%).
  • the purity of NH 4 Cl is not less than 99.9%.
  • Water is deionized water.
  • the wrapping bag contains a substrate carrying a humidity-controlling layer.
  • the wrapping bag is composed of a thin-walled material that is permeable to water vapor but not to a liquid solution, such as any of a non-woven fabric, a composite plastic bag, a paper-plastic composite bag, and a cloth bag.
  • the material is a non-woven fabric.
  • a method for manufacturing an environmental humidity-adjusting article which is used for manufacturing an environmental humidity-adjusting article that controls the environmental humidity to 65 to 75%, including the following steps:
  • Step one configure the coating solution
  • At least one kind of chloride salt and water were configured as a coating liquid at 50 ° C.
  • Step two coating the coating liquid on the substrate
  • the substrate was coated in a coating solution at a speed of 5 to 10 m / s at 45 ° C., and the coating length was 3 to 10 m, so that 0.96 g of the coating solution was supported per cubic centimeter of the substrate.
  • the substrate carrying the coating solution was continuously subjected to microwave drying, so that 0.64 g of the humidity-controlling composition was carried per cubic centimeter of the substrate.
  • the base material is cut so that the base material reaches a predetermined size.
  • the thickness of the base material ranges from 0.1 to 1 mm.
  • the predetermined size is set according to the needs of the user, and can be from 2 cm ⁇ 2 cm to 50 cm ⁇ 50cm.
  • the chloride salt includes KCl and NaCl.
  • the mass fraction of NaCl ranges from 11 to 15%, and the mass fraction of KCl ranges from 2 to 7.5%.
  • the mass fraction of NaCl in the composition ranges from 16.5% to 22.5%, and the mass fraction of KCl in the composition ranges from 3 to 15.75%.
  • the purity of NaCl and KCl are both food pure (purity is not less than 99.9%). Water is deionized water.
  • a method for manufacturing an environmental humidity regulating article the specific steps are the same as those in the first embodiment.
  • the chloride salts include NH 4 Cl and NaCl.
  • the mass fraction of NaCl ranges from 11 to 15%, and the mass fraction of NH 4 Cl ranges from 8 to 12%.
  • the mass fraction of NaCl in the composition ranges from 16.5% to 22.5%, and the mass fraction of NH 4 Cl in the composition ranges from 12 to 18%.
  • the purity of NaCl is food pure (purity is not less than 99.9%).
  • the purity of NH 4 Cl is not less than 99.9%.
  • Water is deionized water.
  • a method for manufacturing an environmental humidity regulating article the specific steps are the same as those in the first embodiment.
  • the chloride salt includes KCl and NaCl.
  • the mass fraction of NaCl ranges from 14 to 14.8%, and the mass fraction of KCl ranges from 3 to 5.4%.
  • the mass fraction of NaCl in the composition ranges from 21 to 22.6%, and the mass fraction of KCl in the composition ranges from 4.5 to 8.1%.
  • the purity of NaCl and KCl are both food pure (purity is not less than 99.9%). Water is deionized water.
  • a method for manufacturing an environmental humidity regulating article the specific steps are the same as those in the first embodiment.
  • the chloride salts include NH 4 Cl and NaCl.
  • the mass fraction of NaCl ranges from 14 to 14.8%, and the mass fraction of NH 4 Cl ranges from 10 to 11.4%.
  • the mass fraction of NaCl in the composition ranges from 21 to 22.6%, and the mass fraction of NH 4 Cl in the composition ranges from 15 to 17.1%.
  • the purity of NaCl is food pure (purity is not less than 99.9%).
  • the purity of NH 4 Cl is not less than 99.9%.
  • Water is deionized water.
  • Example 7 in the coating solution, the mass percentages of NaCl, NH 4 Cl and water with different humidity are adjusted as shown in Table 1:
  • the environmental humidity-adjusting article with a size specification of 50cm ⁇ 50cm ⁇ 0.2cm in the seventh embodiment in a case where the initial humidity range at 25 ° C. is 30 to 80%, humidity is adjusted to a space of 1 cubic meter within 5 minutes. The humidity of the environment is controlled within 65 to 75%, and the effective time of humidity is 3 months.
  • a method for manufacturing an environmental humidity regulating article the specific steps are the same as those in the first embodiment.
  • the chloride salt includes KCl and MgCl 2 .
  • the mass fraction of MgCl 2 ranges from 6 to 17%.
  • the mass fraction of KCl ranges from 3 to 15%.
  • the total mass fraction of all chloride salts ranges from 12 to 29.75%.
  • the mass fraction of MgCl 2 ranges from 9 to 25.5%
  • the mass fraction of KCl ranges from 4.5 to 22.5%
  • the total mass fraction of all the chloride salts ranges from 18 to 44.6%.
  • the purity of KCl is food pure (purity is not less than 99.9%).
  • the purity of MgCl 2 is not less than 99.9%.
  • Water is deionized water.
  • This embodiment is an experiment on the conditions for microwave drying in step four.
  • the mass fraction of the chloride salt contained in the coating solution is lower than that of the humidity-controlling composition. Therefore, the coating solution is actually an unsaturated solution.
  • the humidity conditioning composition is a saturated solution. Therefore, after the coating liquid of each embodiment is applied to the substrate, a certain amount of moisture is removed by microwave drying, and then it can be converted into a humidity-conditioning composition in a humidity-conditioning article.
  • the steps of the method for manufacturing the environmental humidity-adjusting article in this embodiment are the same as those in the first embodiment, but the coating liquid is the coating liquid whose humidity is adjusted to 69% in Table 1 of the seventh embodiment, that is, in this embodiment, the The coating liquid was composed of 14% by mass of NaCl, 11% by mass of NH 4 Cl, and 75% by mass of water.
  • the substrate used in step 1 is a paper substrate made of wood pulp and cotton pulp, the model is B08, and the specific specifications are: a size of 305 mm ⁇ 605 mm, a thickness of 0.7 to 0.8 mm, and a weight of 380. ⁇ 25g / m 2 , water absorption is 700-900g / m 2 (converted water absorption is 0.875-1.29g / cm 3 ).
  • the coating liquid is applied at a speed of 8 m / s, and 1.0 g of the coating liquid is carried in each cubic centimeter of the substrate.
  • the preparation and application of the humidity-controlling liquid in this embodiment are performed at 40 ° C. The volatilization amount of the solvent water at this temperature is negligible, so the humidity-controlling liquid After being formulated and applied to a substrate, the mass percentage of each component does not change.
  • the microwave drying operation in this embodiment is performed using a microwave drying device.
  • the microwave drying equipment is continuous, with a total length of 8m and a power of 15-25KW. After the substrate is placed in its drying tunnel, it moves continuously along the length of the tunnel and is dehydrated by the microwave in the tunnel.
  • the settable parameter of the microwave drying equipment is the rotation speed, but this rotation speed is different from the actual running speed of the material in the equipment (that is, the actual moving speed of the substrate when it passes through the tunnel). Therefore, the inventor first tested the actual speed of the equipment. The results are shown in Table 3:
  • the inventors performed a total of four batches of tests at different speeds.
  • the number of substrates to be dried in each batch was 20 sheets (all 20 sheets were stacked), and the speed of the microwave drying equipment was set to "8", "10", "12", “15”.
  • the drying results of the four batches are shown in Tables 4 to 7 below.
  • Tables 4 to 7 the data in the column “before drying” is the weight of the substrate coated with the coating liquid, the data in the column “after drying” is the weight after microwave drying, and the “dehydration amount” is the weight difference before and after drying. Value, where the units are grams.
  • the substrate carrying the coating liquid is dried by using a microwave drying device, and the amount of dehydration of each substrate decreases as the rotation speed of the device increases.
  • FIG. 1 is a linear relationship diagram between the rotation speed of the equipment and the amount of dehydration in the ninth embodiment of the present invention.
  • the dewatering amount of the B08 substrate has a linear relationship with the equipment speed, and the linearity between the two is good. Therefore, by setting the rotation speed of the device, a predetermined dehydration amount can be achieved.
  • a predetermined dehydration amount can be achieved.
  • quantitative dehydration can be achieved, so that each component in the humidity-conditioning composition in the humidity-adjusted article finally obtained reaches a predetermined quality. percentage. It can be seen from Table 8 that by setting the rotation speed of the microwave drying equipment to 15, the dehydration amount of this embodiment can be satisfied.
  • the first comparative example is a comparative experiment of the ninth embodiment.
  • the steps (including the composition and ratio of the coating solution, the type of substrate, and the load of the coating solution) of the manufacturing method of the environmental humidity-adjusting article of this comparative example are the same as those in Example 9, but the microwave drying in step 4 is replaced by a hot air oven dry.
  • the trial hot-air oven can hold 70 sheets of paper at a time, in order to simulate the mass production process, 70 sheets of the substrate carrying the coating solution are taken into the hot-air oven. Because the hot air oven has different layers, and each layer can also place multiple substrates at the same time, in this comparative example, 8 different positions are numbered, and each position is randomly selected to record the mass before drying. Take out the scale every 5-10 minutes Weight, observe its uniformity of drying, and observe its flatness.
  • FIG. 2 is a view of dehydration in a hot-air oven of Comparative Example 1 of the present invention
  • FIG. 3 is a photograph of a substrate coated with a coating solution of Comparative Example 1 of the present invention after being dried in a hot-air oven.
  • the abscissa is the substrate at different positions in the oven
  • the ordinate is the weight of the substrate (in grams)
  • the box A shows the weight range of the dried substrate that reaches a predetermined dehydration amount.
  • the inventor also made a second attempt for the drying of the above hot-air oven: when drying to the 20th minute, the substrates of the upper layer and the upper and middle layers were removed, and the sheets of the lower layer were replaced on the upper layer, so as to finally obtain The difference in substrate weight is reduced.
  • this operation of moving the substrate in the middle is time-consuming and laborious, and the resulting substrate still has severe warping, which is not suitable for subsequent cutting processes (when the sheet has severe warpage, the obtained after cutting Small sheets will have irregular edges and irregular dimensions).
  • using this method of replacing positions midway can reduce the weight difference between the same batch of substrates, but the difference is still higher than the microwave drying of Example 9.
  • This embodiment is similar to the ninth embodiment, and is an experiment on the conditions for microwave drying in step four.
  • the difference between this embodiment and Embodiment 9 lies in the formulation ratio of the coating liquid and the specifications of the substrate, which are as follows:
  • the coating liquid used in step 2 of this embodiment is a coating liquid with a adjusted humidity of 71% in Table 1, and is composed of 14.6% by mass of NaCl, 10% by mass of NH 4 Cl, and 75.4% by mass of water.
  • the substrate selected in this embodiment is a substrate of type B20.
  • the specific specifications are: the size is 305mm ⁇ 605mm, the thickness is 1.9 ⁇ 2.1mm, the weight is 850 ⁇ 50g / m 2 and the water absorption is 1800 ⁇ 2200g / m 2 (the water absorption after conversion is 0.86 to 1.16 g / cm 3 ).
  • about 93g of moisture needs to be removed from each substrate so that the components of the humidity-conditioning composition of the humidity-conditioning article can reach the corresponding mass percentages in Table 2 (that is, NaCl is 21.9%, NH 4 Cl is 15%, and water is 63.1%. ).
  • a total of three batches of microwave drying tests are performed.
  • the number of substrates carrying the coating solution for each batch is 20 (20 sheets are stacked).
  • the rotation speed of the microwave drying equipment is set separately.
  • the values are "6", "7", and "8".
  • the drying results of the three batches are shown in Tables 10 to 12 below.
  • FIG. 4 is a photo of a substrate coated with a coating solution after microwave drying according to Example 10 of the present invention
  • FIG. 5 is an electron microscope photo of the substrate of FIG. 4.
  • the substrates in FIG. 4 and FIG. 5 are substrates of No. 1 in Table 10.
  • the base material of the B20 model is thicker. After microwave drying, its overall surface is flat, without warping, and its surface is relatively loose. As shown in FIG. 5, after microwave drying, the coating solution that was originally an unsaturated solution was saturated and formed fine particles in the substrate. These crystals have a relatively uniform particle size and a relatively uniform distribution.
  • the dehydration amount is the average dehydration amount of a batch of substrates (20 sheets) at this rotation speed.
  • the rotation speed of the setting equipment can also reach a predetermined amount of dehydration to achieve quantitative dehydration.
  • a desired spin-drying amount can be achieved by setting the rotation speed of the device to 8.
  • FIG. 6 is a humidity adjustment effect diagram of the humidity-conditioning article according to Embodiment 10 of the present invention.
  • the abscissa is time (d, day), and the ordinate is temperature (° C.) and humidity (%), respectively.
  • a sheet is randomly selected from the dried substrate (that is, the dried substrate obtained at the speed of 8) corresponding to Table 12 and cut into small pieces. Take 10g, put it in a closed container (capacity is about 2L), and put in a wet paper towel (time point T1) with 1g of water. A humidity meter was used to monitor and record the humidity in the container in real time. The results are shown in Figure 6. It can be seen from Figure 6 that the humidity was maintained at about 71% before the wet paper towel was placed, and the humidity rose rapidly to about 75% after the wet paper towel was placed, and then gradually decreased, and then returned to about 71% after a period of time.
  • the humidity is maintained near this humidity for a long time until the humidity-adjusted article is taken out (time point T2). It can be seen that the humidity-conditioning article prepared in this embodiment has good humidity-conditioning performance, and can accurately maintain the ambient humidity at the target humidity.
  • the manufacturing method, hot-air drying equipment, and conditions of the environmental humidity-adjusting article of the second comparative example are the same as those of the first comparative example, but the substrate and coating liquid used are the same as those in Example 10 (ie, the B20 substrate and the 71% humidity-adjusting coating) liquid).
  • the B20 substrate also had a problem of uneven dehydration when it was dried in a hot air oven.
  • the appearance of the substrate after drying is similar to that of Comparative Example 1, and there are defects that the substrate is warped and the surface of the substrate becomes compact.
  • the coating liquid, the environmental humidity-adjusting article, and the manufacturing method thereof because the mass fraction of the chloride salt in the coating liquid ranges from 12 to 29.75%, it is applied to a substrate and then microwave-dried. It can be transformed into a humidity-controlling composition supported on a substrate; in this humidity-controlling composition, the mass fraction of the chloride salt ranges from 18 to 44.6%.
  • the environmental humidity-adjusting article of the embodiment can change the environmental humidity
  • the adjustment control is 65 to 75%, and the humidity adjustment articles of different formulas in this range can accurately maintain the target environment at a predetermined humidity, for example, the humidity corresponding to the humidity adjustment composition whose adjustment humidity is 69% in Table 2 Adjusting articles can maintain the target ambient humidity at 69% ⁇ 1%, which is especially suitable for the preservation of cigars.
  • Other humidity-adjusting humidity-adjusting items are also suitable for the storage of different items, such as other tobacco products.
  • the humidity-controlling composition contained in the environmental humidity-adjusting article of the embodiment is a saturated solution, which has a large moisture absorption and release capacity, and does not need to perform humidity balance in advance, and can be directly used in the target environment.
  • the substrate can be arbitrarily cut according to requirements, the substrate can be cut into an appropriate size according to the volume of the target environment during use, and then directly placed in the target environment, which is very convenient to use.
  • the environmental humidity regulating article of this embodiment only contains common chloride salts.
  • the composition prepared by using these chloride salts is not only low-cost, but also safe for the human body, the environment, and the object to be stored during manufacture.
  • the environmental humidity-conditioning article manufactured by the method for manufacturing an environmental humidity-conditioning article in this embodiment is also friendly to the natural environment after being discarded, and can be naturally decomposed without causing secondary pollution.
  • the method for manufacturing an environmental humidity-adjusting article adopts a microwave drying method to perform dehydration.
  • the microwave drying method does not require long-time preheating, and can continuously and uniformly each substrate. And precise dehydration.
  • the coating solution supported on the substrate can evenly remove water to form a saturated solution, and the crystals formed are uniformly distributed inside the substrate and the particle diameter is uniform.
  • This uniformly distributed saturated solution is not easy to increase due to environmental humidity or Falling down causes large-area crystal dissolution or crystal formation inside the substrate, so it is more stable and less prone to failure.
  • the surface of the substrate does not form large particle crystals due to uneven dehydration, so the surface of the humidity-adjusted article is neat and smooth, and no crystalline dust is generated during cutting.
  • the setting speed of the microwave drying equipment has a good linear relationship with the amount of dehydration. Therefore, by adjusting the speed of the microwave drying equipment, the amount of dehydration of the substrate can be controlled, thereby achieving quantitative dehydration. Therefore, in the method for manufacturing an environmental humidity-adjusting article according to the embodiment, the amount of dehydration is controllable, which is suitable for manufacturing humidity-adjusting articles containing humidity-controlling compositions having different predetermined proportions.
  • the above-mentioned microwave drying method can also maintain the looseness of the surface of the substrate.
  • air in the environment can more easily enter the interior of the substrate for moisture exchange (that is, moisture absorption or dehumidification), and the target humidity can be reached faster.
  • the environmental humidity adjustment article in the embodiment has the characteristics of rapid humidity adjustment.
  • the microwave drying is performed by using a continuous microwave drying equipment. Compared with the existing hot air drying equipment, it does not require preheating to place the substrate, so the effective production time is longer. It is estimated that in the same production time, microwave drying has increased the productivity of the B08 substrate drying step by 40% (compared to hot air oven drying), and the productivity of the B20 substrate drying has increased by 129%. The larger the amount of dehydration required, the more obvious the advantages of microwave drying in terms of energy saving and time saving.
  • the continuous microwave drying equipment can realize continuous production, which is easier to match the coating of the previous step and the cutting and wrapping of the next step, so that the entire manufacturing method requires almost no operations such as handling substrates. , Reduce labor costs and improve overall production efficiency.
  • the wrapping bag is made of a thin-walled material that is permeable to water vapor but impermeable to liquid solutions.
  • small holes may also be provided in the wrapping bag, and the speed of humidity adjustment may be changed by adjusting the number of small holes (for example, if the number of small holes is large, the humidity-adjusting article can be brought into contact with the air in the environment more quickly , Quick humidity adjustment).
  • the present invention can also be packaged in another way.
  • the surface of the dried substrate is covered with a protective film made of a breathable material, so that the overall humidity-conditioning article is in a large sheet shape, and the user can arbitrarily Cropped for easier use.
  • the substrates used in the examples are paper substrates. Such substrates are mainly made of wood pulp, cotton pulp, etc., so they have strong water retention and can absorb more liquid.
  • the substrate can also be prepared by using other similar materials, such as cotton cloth, chemical fiber materials, non-woven fabric, felt, porous plastic, mineral substrate, and the like.

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Abstract

一种涂布液、环境湿度调节物品及其制造方法，用于涂布在基材上从而制备将环境湿度控制在65～75％的环境湿度调节物品，包括：至少一种氯化盐和水，其中，氯化盐为NaCl、NH4Cl、KCl和MgCl2中的至少一种，氯化盐在组合物中的质量分数范围是12～29.75％；制造方法包括以下步骤：步骤一，配置涂布液；步骤二，在基材上涂布涂布液，步骤三微波干燥。

Description

涂布液、环境湿度调节物品及其制造方法 技术领域
本发明具体涉及一种环境湿度调节物品、用于涂布制造该环境湿度调节物品的涂布液及制造方法。
背景技术
“湿度”是影响各行各业的产品包装及储存保质期的重要因素。每个产品都需要一个合理的湿度范围来储存。例如，雪茄产品的保存湿度是69％左右，环境湿度低于该数值会使得雪茄的内部空间中的水分过低、加快烟草的老化；环境湿度高于该数值会引起雪茄的腐败，进而引起雪茄的风味损伤。部分种子的保存湿度是65～75％左右，环境湿度低于该数值会使得种子过干、发生虫蛀；环境湿度高于该数值会使得种子发热霉变进而丧失种子的活力。冻肉类等食物的湿度应保持在65％-75％之间，环境湿度低于该数值，会引起食品干枯；环境湿度高于该数值，食品会变得粘滑，助长细菌生长，加速食品变质。
为了将环境湿度控制65％-75％，传统的方式是采用凝胶类调湿物品对环境进行调湿。使用时，需要先将调湿凝胶放置在恒温恒湿箱内预平衡，然后再将平衡后的调湿凝胶放到目标环境中。平衡后的调湿凝胶能够在目标环境湿度过高时吸湿(吸收水分)，湿度过低时放湿(放出水分)，使得目标环境的湿度维持在一定范围内。
然而，上述调湿凝胶存在如下不足：(1)调湿精度差，使用时目标环境的湿度可能在较大范围内波动(例如±10％的范围内)，难以维持在一个固定的湿度附近；(2)生产过程耗能较高，且产生大量废水，不利于环保；(3)用户需要配备恒温恒湿箱才能使用这样的调湿凝胶，因此使用成本高，同时恒温恒湿箱的容积有限，达到湿度平衡所需的时间也较长，使用十分不便。
发明内容
本发明是为了解决上述问题而进行的，目的在于提供一种工艺简单，原材料便宜，调湿性能好，节约能源且使用方便的环境湿度调节物品及其制造方法。同时，本发明还提供了用于在该制备方法中制备环境湿度调节物品的涂布液(即涂布液)。
本发明提供了一种涂布液，用于涂布在基材上从而制备将环境湿度控制在65～75％的环境湿度调节物品，其特征在于，包括：至少一种氯化盐和水，其中，氯化盐为NaCl、NH 4Cl、KCl和MgCl 2中的至少一种，氯化盐在组合物中的质量分数范围是12～29.75％。
本发明还提供了一种环境湿度调节物品制造方法，用于制造将环境湿度控制在65～75％的环境湿度调节物品，其特征在于，包括以下步骤：
步骤一，配置涂布液
将至少一种氯化盐和水在不低于40℃的情况下配置成涂布液；
步骤二，在基材上涂布涂布液
在常温下将基材在涂布液中以1～15m/s的速度涂布，使得每立方厘米基材中负载有0.81～1.11克涂布液；
步骤三，微波干燥
对负载有涂布液的基材连续进行微波干燥，使得每立方厘米基材中负载有 0.54～0.74克调湿组合物，
其中，氯化盐为NaCl、NH 4Cl、KCl和MgCl 2中的至少一种，
在涂布液中，氯化盐的质量分数范围是12～29.75％，
在调湿组合物中，氯化盐的质量分数范围是18～44.6％，
步骤三中，微波干燥的条件是在15～25KW对基材以1～3m/min的速度对基材进行干燥。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，其中，调湿组合物包含一种氯化盐，氯化盐为NaCl，在涂布液中，氯化盐的质量分数范围是12～26.8％，在调湿组合物中，氯化盐的质量分数范围是18～40.2％。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，其中，调湿组合物包含两种氯化盐，一种氯化盐为KCl和NH 4Cl中的任意一种，另一种氯化盐为NaCl，在涂布液中，NaCl的质量分数范围是7～16％，在涂布液中，NH 4Cl的质量分数范围是5～13.75％，在涂布液中，KCl的质量分数范围是2～10.5％，在调湿组合物中，NaCl的质量分数范围是10.5～24％，在调湿组合物中，NH 4Cl的质量分数范围是7.5～20.6％，在调湿组合物中，KCl的质量分数范围是3～15.75％。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，其中，在涂布液中，NaCl的质量分数范围是11～15％，在涂布液中，NH 4Cl的质量分数范围是8～12％，在涂布液中，KCl的质量分数范围是3～8％，在调湿组合物中，NaCl的质量分数范围是16.5～22.5％，在调湿组合物中，NH 4Cl的质量分数范围是12～18％，在调湿组合物中，KCl的质量分数范围是4.5～12％。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，其中，在涂布液中，NaCl的质量分数范围是14～14.8％，在涂布液中，NH 4Cl的质量分数范围是10～11.4％，在涂布液中，KCl的质量分数范围是5～7.4％，在调湿组合物中，NaCl的质量分数范围是21～22.6％，在调湿组合物中，NH 4Cl的质量分数范围是15～17.1％，在调湿组合物中，KCl的质量分数范围是7.5～11.1％。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，其中，调湿组合物包含两种氯化盐，一种氯化盐为KCl，另一种氯化盐为MgCl 2，在涂布液中，MgCl 2的质量分数范围是6～17％，在涂布液中，KCl的质量分数范围是3～15％，在涂布液中，所有氯化盐的总质量分数范围是12～29.75％，在调湿组合物中，MgCl 2的质量分数范围是9～25.5％，在调湿组合物中，KCl的质量分数范围是4.5～22.5％，在调湿组合物中，所有氯化盐的总质量分数范围是18～44.6％。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，还包括：
步骤四，裁切基材
对基材进行裁切，使得基材达到预定的大小，
其中，基材的材料为纸类材料、棉布、化纤类材料、无纺布、毛毡、多孔塑料、矿物基材中的任意一种。
本发明提供的环境湿度调节物品制造方法中，还可以具有这样的技术特征，还包括：
步骤五，包装
采用包裹袋对负载有调湿组合物的基材进行容纳包裹。
本发明还提供了一种环境湿度调节物品，用于将环境湿度调节控制在65～75％，其特征在于，采用如上任一项所述的环境湿度调节物品制造方法制造 而成。
发明的作用与效果
根据本发明所涉及的涂布液、环境湿度调节物品及其制造方法，因为涂布液中，氯化盐的质量分数范围是12～29.75％，在调湿组合物中，氯化盐的质量分数范围是18～44.6％，所以，本实施例的环境湿度调节物品制造方法具有可以制造将环境湿度调节控制在65～75％的环境湿度调节物品，且该范围内不同配方的湿度调节物品能够精准地将目标环境维持在预定湿度。
不仅如此，本实施例的环境湿度调节物品仅包含常见的氯化盐，使用这些氯化盐制备的组合物不仅成本低廉，而且在制造时对人体安全、对环境与被保存对象安全。而且，本实施例的环境湿度调节物品制造方法制造出的环境湿度调节物品在废弃后对自然环境也依然友好，可被自然分解，不会造成二次污染。
本实施例的环境湿度调节物品制造方法采用了微波干燥的方式来进行脱水，与传统的热风干燥方式相比，该微波干燥可以实现定量脱水，让涂布液转变为调湿组合物的脱水量控制更为容易，还能够使制得的湿度调节物品具备性能稳定、调湿更快等优点。
附图说明
图1是本发明实施例九的设备转速与脱水量的线性关系图；
图2是本发明对比例一的热风烘箱中的脱水情况；
图3是本发明对比例一的涂布有涂布液的基材经热风烘箱干燥后的照片；
图4是本发明实施例十的涂布有涂布液的基材经微波干燥后的照片；
图5为图4的基材的电镜照片；
图6是本发明实施例十的湿度调节物品的湿度调节效果图。
具体实施方式
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，以下实施例对本发明环境湿度调节物品制造方法作具体阐述。
<实施例一>
一种环境湿度调节物品制造方法，用于制造将环境湿度控制在65～75％的环境湿度调节物品，包括以下步骤：
步骤一，配置涂布液
将至少一种氯化盐和水在不低于40℃的情况下配置成调湿液。该调湿液用于涂布在基材上从而制造湿度调节物品，以下为了方便说明，将其称为涂布液。
步骤二，在基材上涂布配制好的涂布液
在常温下将基材在涂布液中以1～15m/s的速度涂布，使得每立方厘米基材中负载有0.81～1.11克涂布液。
步骤三，裁切基材
对基材进行裁切，使得基材达到预定的大小，在本实施例中，该基材的厚度大于2mm，预定大小根据用户的需求进行设定，可从20mm×20mm～200mm×300mm。
步骤四，微波干燥
对裁切后负载有涂布液的基材连续进行微波干燥，使得每立方厘米基材中负载有0.54～0.74克调湿组合物。微波干燥的条件是在15～25KW对基材以1～3m/min 的速度对基材进行干燥。
基材具有一定的吸水性能，基材的吸水性能为每立方厘米基材吸水量不小于自身体积的100％。基材的材料为纸类材料、棉布、化纤类材料、无纺布、毛毡、多孔塑料、矿物基材中的任意一种。在本实施例一中，基材选用纸类材料中的棉木浆纸。该棉木浆纸的吸水性能为每立方厘米基材吸水量至少为0.8克，保水性能为每立方厘米基材吸水量至少为1.2克。该棉木浆纸的厚度为2mm。。
在本实施例中，氯化盐为NaCl。
在涂布液中，NaCl的质量分数范围是12～26.8％。
在调湿组合物中，NaCl的质量分数范围是18～40.2％。
NaCl的纯度为不小于99.9％。水为去离子水。
<实施例二>
一种环境湿度调节物品制造方法，用于制造将环境湿度控制在65～75％的环境湿度调节物品，包括以下步骤：
步骤一，配置涂布液
将至少一种氯化盐和水在45℃的情况下配置成涂布液。
步骤二，在基材上涂布涂布液
在常温下将基材在涂布液中以1～5m/s的速度涂布，使得每立方厘米基材中负载有1.11克涂布液。
步骤三，微波干燥
对裁切后负载有涂布液的基材连续进行微波干燥，使得每立方厘米基材中负载有0.74克调湿组合物。微波干燥的条件是在15～25KW对基材以1～3m/min的速度对基材进行干燥。
步骤四，裁切基材
对基材进行裁切，使得基材达到预定的大小，在本实施例中，该基材的厚度的范围在0.1～1mm，预定大小根据用户的需求进行设定，可从2cm×2cm～50cm×50cm。
在本实施例中，氯化盐包括KCl和NaCl。
在涂布液中，NaCl的质量分数范围是7～16％，KCl的质量分数范围是2～10.5％。
在调湿组合物中，NaCl在该组合物中的质量分数范围是10.5～24％，KCl在该组合物中的质量分数范围是3～15.75％。
NaCl和KCl的纯度均为食品纯(纯度为不小于99.9％)。水为去离子水。
当涂布液中NaCl和KCl的质量分数大于分数范围时，组合物中容易产生结晶，需要高温才能将晶体溶解，损耗大，而且组合物的质量不稳定；当涂布液中NaCl和KCl的质量分数小于分数范围时，后续的微波干燥处理需要花费更长的时间，不仅干燥效果不佳而且调湿性能会发生降低。
<实施例三>
一种环境湿度调节物品制造方法，用于制造将环境湿度控制在65～75％的环境湿度调节物品，包括以下步骤：
步骤一，配置涂布液
将至少一种氯化盐和水在40℃的情况下配置成涂布液。
步骤二，在基材上涂布涂布液
在常温下将基材在涂布液中以10～15m/s的速度涂布，使得每立方厘米基材中负载有0.81克涂布液。
步骤三，微波干燥
对裁切后负载有涂布液的基材连续进行微波干燥，使得每立方厘米基材中负载有0.54克调湿组合物。微波干燥的条件是在20KW对基材以2m/min的速度进行干燥。微波干燥的条件是在15～25KW对基材以1～3m/min的速度进行干燥。
步骤四，裁切基材
对基材进行裁切，使得基材达到预定的大小，在本实施例中，该基材的厚度的范围在0.1～1mm，预定大小根据用户的需求进行设定，可从2cm×2cm～50cm×50cm。
步骤五，包装
采用包裹袋对负载有调湿组合物的基材进行容纳包裹。
本实施例中，包裹袋为由透气材料制成的尺寸与裁切后基材相适应的小袋，且其上设置有多个透气小孔。
在本实施例中，氯化盐包括NH 4Cl和NaCl。
在涂布液中，NaCl的质量分数范围是7～16％，NH 4Cl的质量分数范围是5～13.75％。
在调湿组合物中，NaCl在该组合物中的质量分数范围是10.5～24％，NH 4Cl在该组合物中的质量分数范围是7.5～20.6％。
NaCl的纯度为食品纯(纯度为不小于99.9％)。NH 4Cl的纯度为不小于99.9％。水为去离子水。
包裹袋容纳负载有调湿层的基材。包裹袋由可渗透水蒸气但不渗透液态溶液的薄壁材料构成，例如无纺布、复合塑料袋、纸塑复合袋以及布袋中的任意一种。在本实施例三中，该材料为无纺布。
<实施例四>
一种环境湿度调节物品制造方法，用于制造将环境湿度控制在65～75％的环境湿度调节物品，包括以下步骤：
步骤一，配置涂布液
将至少一种氯化盐和水在50℃的情况下配置成涂布液。
步骤二，在基材上涂布涂布液
在45℃将基材在涂布液中以5～10m/s的速度涂布，涂布长度为3～10m，使得每立方厘米基材中负载有0.96克涂布液。
步骤三，微波干燥
对裁切后负载有涂布液的基材连续进行微波干燥，使得每立方厘米基材中负载有0.64克调湿组合物。
步骤四，裁切基材
对基材进行裁切，使得基材达到预定的大小，在本实施例中，该基材的厚度的范围在0.1～1mm，预定大小根据用户的需求进行设定，可从2cm×2cm～50cm×50cm。
在本实施例中，氯化盐包括KCl和NaCl。
在涂布液中，NaCl的质量分数范围是11～15％，KCl的质量分数范围是2～7.5％。
在调湿组合物中，NaCl在该组合物中的质量分数范围是16.5～22.5％，KCl 在该组合物中的质量分数范围是3～15.75％。
NaCl和KCl的纯度均为食品纯(纯度为不小于99.9％)。水为去离子水。
<实施例五>
一种环境湿度调节物品制造方法，具体步骤同实施例一。
其中，氯化盐包括NH 4Cl和NaCl。
在涂布液中，NaCl的质量分数范围是11～15％，NH 4Cl的质量分数范围是8～12％。
在调湿组合物中，NaCl在该组合物中的质量分数范围是16.5～22.5％，NH 4Cl在该组合物中的质量分数范围是12～18％。
NaCl的纯度为食品纯(纯度为不小于99.9％)。NH 4Cl的纯度为不小于99.9％。水为去离子水。
<实施例六>
一种环境湿度调节物品制造方法，具体步骤同实施例一。
其中，氯化盐包括KCl和NaCl。
在涂布液中，NaCl的质量分数范围是14～14.8％，KCl的质量分数范围是3～5.4％。
在调湿组合物中，NaCl在该组合物中的质量分数范围是21～22.6％，KCl在该组合物中的质量分数范围是4.5～8.1％。
NaCl和KCl的纯度均为食品纯(纯度为不小于99.9％)。水为去离子水。
<实施例七>
一种环境湿度调节物品制造方法，具体步骤同实施例一。
其中，氯化盐包括NH 4Cl和NaCl。
在涂布液中，NaCl的质量分数范围是14～14.8％，NH 4Cl的质量分数范围是10～11.4％。
在调湿组合物中，NaCl在该组合物中的质量分数范围是21～22.6％，NH 4Cl在该组合物中的质量分数范围是15～17.1％。
NaCl的纯度为食品纯(纯度为不小于99.9％)。NH 4Cl的纯度为不小于99.9％。水为去离子水。
以实施例七为例，在涂布液中，调节不同湿度的NaCl、NH 4Cl和水的质量百分数如下表1：
表1涂布液中调节不同湿度的NaCl、NH 4Cl和水的质量百分数
调节湿度(％) NaCl(％) NH 4Cl(％) H 2O(％)
65 14 11.4 74.6
69 14 11 75
71 14.6 10 75.4
75 14.8 10 75.2
在调湿组合物中的NaCl、NH 4Cl和水的质量百分数分别如下表2：
表2调湿组合物中调节不同湿度的NaCl、NH 4Cl和水的质量百分数
调节湿度(％) NaCl(％) NH 4Cl(％) H 2O(％)
65 21 17.1 61.9
69 21 16.5 62.5
71 21.9 15 63.1
75 22.2 15 62.8
采用本实施例七中的大小规格为50cm×50cm×0.2cm的环境湿度调节物品在25℃初始湿度范围在30～80％的情况下，对1立方米的空间进行调湿，在5分钟内将环境湿度调节控制在65～75％内，调湿有效时间为3个月。
<实施例八>
一种环境湿度调节物品制造方法，具体步骤同实施例一。
其中，氯化盐包括KCl和MgCl 2。
在涂布液中，MgCl 2的质量分数范围是6～17％，
在涂布液中，KCl的质量分数范围是3～15％，
在涂布液中，所有氯化盐的总质量分数范围是12～29.75％，
在调湿组合物中，MgCl 2的质量分数范围是9～25.5％，
在调湿组合物中，KCl的质量分数范围是4.5～22.5％，
在调湿组合物中，所有氯化盐的总质量分数范围是18～44.6％。
KCl的纯度为食品纯(纯度为不小于99.9％)。MgCl 2的纯度为不小于99.9％。水为去离子水。
<实施例九>
本实施例为步骤四中的微波干燥的条件考察实验。如前述实施例所述，涂布液中所含有的氯化盐的质量分数均低于调湿组合物，因此，涂布液实际上为不饱和溶液，而各实施例得到的湿度调节物品中的调湿组合物为饱和溶液。由此，各实施例的涂布液被涂布至基材后需要经过微波干燥脱去一定量水分，然后才能使其转变为湿度调节物品中的调湿组合物。
本实施例的环境湿度调节物品制造方法的步骤同实施例一，但涂布液为实施例七的表1中调节湿度为69％的涂布液，即，本实施例中，步骤二使用的涂布液由14％质量分数的NaCl、11％质量分数的NH 4Cl以及75％质量分数的水构成。
本实施例中，步骤一采用的基材为由木浆和棉浆制成的纸质基材，型号为B08，具体规格为：尺寸为305mm×605mm，厚度0.7～0.8mm，克重为380±25g/m 2，吸水量为700～900g/m 2(换算后吸水量为0.875～1.29g/cm 3)。步骤二中，涂布液的涂布速度均为8m/s，每立方厘米基材中负载有1.0克涂布液。经计算，将涂布液涂至基材后，每张基材需要脱去约36g水，才能使湿度调节物品中的调湿组合物的各成分达到表2中对应的质量百分数(即NaCl为21％、NH 4Cl为16.5％，水为62.5％)。另外，为了便于调湿液的配制和涂布，本实施例的调湿液配制和涂布均在40℃条件下进行，该温度下溶剂水的挥发量可以忽略不计，因此可以认为调湿液配制并涂布至基材后，其各成分的质量百分数不发生变化。
本实施例的微波干燥操作采用微波干燥设备进行。该微波干燥设备是连续式的，其总长为8m，功率为15～25KW，基材放入其干燥隧道后，即在隧道内部沿长度方向连续移动并在该隧道内受到微波影响而脱水。微波干燥设备的可设置参数为转速，但该转速与材料在设备中的实际运行速度(即基材穿过隧道时的实际移动速度)不同，因此发明人首先对设备的实际速度进行了测试，结果如下表3：
表3微波干燥设备的设定转速与实际速度的对照表
Figure PCTCN2019093698-appb-000001
本实施例中，发明人在不同转速下一共进行了四个批次的试验。该四个批次的试验中，每批次进行干燥的基材数量均为20张(20张均重叠放置)，微波干燥设备的转速分别设置为“8”、“10”、“12”、“15”。四个批次的干燥结果数据见下表4～表7。表4～表7中，“干燥前”一列的数据为涂布有涂布液的基材重量，“干燥后”一列的数据为微波干燥后的重量，“脱水量”为干燥前后的重量差值，其中单位均为克。
表4 B08型基材在转速设置为8的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000002
表5 B08型基材在转速设置为10的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000003
Figure PCTCN2019093698-appb-000004
表6 B08基材在转速12的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000005
表7 B08基材在转速15的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000006
从上表4～表7可以看出，当设备的转速一定时，同一批进行干燥的基材的脱水量接近，说明微波干燥的效果稳定，同一批次的脱水量误差小。
总结表4～表7的4次试验数据，针对305*605mm大小的B08型基材，涂布了表1中调节湿度为69％的涂布液后在连续式微波干燥设备中的转速与脱水量关系的数据，见表8。表8中，脱水量为该转速下的一批基材(20张)的平均脱水量。
表8 B08基材在连续式微波干燥设备中转速与脱水量的关系
Figure PCTCN2019093698-appb-000007
可见，本实施例采用微波干燥设备对负载了涂布液的基材进行干燥，每张基 材的脱水量随着设备转速的增加而减少。
图1是本发明实施例九的设备转速与脱水量的线性关系图。
如图1所示，B08基材的脱水量与设备转速呈线性关系，且二者之间线性良好。因此，设定设备的转速即可达到预定的脱水量，采用本实施例这样的微波干燥设备可以实现定量脱水，使得最终制得的湿度调节物品中的调湿组合物中的各成分达到预定质量百分数。从表8中可以看出，将微波干燥设备的转速设定为15，即可满足本实施例的脱水量。
<对比例一>
本对比例一是实施例九的对比实验。
本对比例的环境湿度调节物品制造方法的步骤(包括涂布液成分及配比、基材种类以及涂布液负载量等)同实施例九，但步骤四中的微波干燥被替换为热风烘箱干燥。
发明人针对热风烘箱干燥的温度条件进行了测试，发现如果温度过高，不仅会引起氯离子随着水分的蒸发而部分挥发，影响产品品质，而且纸纤维本身碳氢结构也会因为温度过高而碳化。如果温度太低，烘干时间过长，影响生产效率。因此，本对比例中热风烘箱的设置温度为80℃(经检测，烘箱内部的实际温度接近90℃)。
由于试制的热风烘箱每次能放70张纸，因此为了模拟批量生产的工艺，取70张的负载了涂布液的基材放在热风烘箱内。由于热风烘箱具有不同的层，且每层还可以同时放置多张基材，因此本比较例中将8个不同位置编号，每个位置随机选择一张记录干燥前的质量，每5～10分钟取出称重，观察其干燥的均匀性，并观察其平整度。
脱水情况的数据结果见下表9。表9中，“干燥前”指干燥前的负载了涂布液的基材的重量，“10分钟”、“15分钟”、“20分钟”、“25分钟”和“30分钟”分别指热风烘箱干燥对应时间后的重量，其中单位均为克。
表9对比例一中B08基材在80℃热风烘箱中的脱水情况
Figure PCTCN2019093698-appb-000008
从表9中数据可见，不同层的基材的脱水程度不一样，同一批次的多张基材的干燥速度严重受位置影响。在刚开始10分钟，上层每张的脱水量已经21克，而最下层才11克，脱水量差异达到50％左右；在第20分钟时，最上层脱水40克，最下层脱水25克，差异37.5％；在30分钟时，最上层脱水54克，最下层脱水34克，差异还是37％。
另外，从表9中还可以直接看出，热风烘箱的脱水速度不均匀，具体为：一开始因为水分含量高所以脱水速度快(间隔5min的重量差较大)，而随着水分含量的降低，脱水速度会明显降低(间隔5min的重量差减小)。
图2是本发明对比例一的热风烘箱中的脱水情况，图3是本发明对比例一的涂布有涂布液的基材经热风烘箱干燥后的照片。图2中，横坐标为烘箱中不同位置的基材，纵坐标为基材重量(单位为克)，方框A所示出的是达到预定脱水量的干燥后基材的重量范围。
根据图2及表9可知，由于烘箱的热风循环的不均匀性，不同位置的干燥速度不一样，20分钟的时候，上层和中上层都达到目的了，中下层在25分钟也达到了目的，最下层到30分钟才达到目的范围。另外，根据图3可知，热风烘箱干燥后的基材发生了明显的翘曲现象，且放置时位于外侧的基材的翘曲现象较为严重。同时，本对比例的热风烘箱干燥后的基材表面更为紧密，而实施例九的微波干燥后的基材表明更为疏松，更接近涂布前的基材的疏松特性。由于表面紧密将导致空气难以进入基材内部进行水分交换，因此表面紧密这一特性使得本对比例制得的湿度调节物品的湿度调节性能变差。
进一步，发明人还针对以上热风烘箱的干燥进行了第二次的尝试：在干燥至第20分钟时，把上层和中上层的基材取走，把下层的片置换到上面来，使得最终得到的基材重量差异减小。但是，这种中途挪动基材的操作较为费时费力，且最终得到的基材仍然有严重的翘曲现象，不适用于后续的裁切工艺(片材有严重翘曲时，裁切后得到的小片材将产生边缘不整齐、尺寸不符合规范的问题)。另外，采用这种中途置换位置的方式可以让同一批基材之间的重量差异减小，但该差异仍然高于实施例九的微波干燥。
<实施例十>
本实施例与实施例九类似，均为步骤四中的微波干燥的条件考察实验。本实施例与实施例九的不同之处在于涂布液的配比以及基材的规格，具体如下：
本实施例步骤二采用的涂布液为表1的调节湿度为71％的涂布液，由14.6％质量分数的NaCl、10％质量分数的NH 4Cl以及75.4％质量分数的水构成。
本实施例中选用的基材是型号为B20的基材，具体规格为：尺寸为305mm×605mm，厚度1.9～2.1mm，克重为850±50g/m 2，吸水量为1800～2200g/m 2(换算后吸水量为0.86～1.16g/cm 3)。经计算，每张基材需要脱去约93g水分才能使湿度调节物品的调湿组合物的各成分达到表2中对应的质量百分数(即NaCl为21.9％、NH 4Cl为15％，水为63.1％)。
本实施例中，微波干燥一共进行三个批次的试验，每批次进行干燥的负载有涂布液的基材数量为20张(20张均重叠放置)，微波干燥设备的转速分别设定为“6”、“7”、“8”，三个批次的干燥结果数据见下表10～表12。
表10 B20基材在转速6的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000009
Figure PCTCN2019093698-appb-000010
表11 B20基材在转速7的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000011
表12 B20基材在转速8的连续式微波干燥设备中的脱水量
Figure PCTCN2019093698-appb-000012
图4是本发明实施例十的涂布有涂布液的基材经微波干燥后的照片，图5为图4的基材的电镜照片。图4和图5中的基材均为表10中序号1的基材。
如图4所示，B20型号的基材较厚，在经过微波干燥后，其整体平整、无翘曲现象，且表面较为疏松。如图5所示，经微波干燥后，原本呈不饱和溶液的涂布液呈饱和状态并在基材内部形成颗粒细小的结晶，这些结晶粒径较为均一，且分布也比较均匀。
总结表10～表12的三批次试验数据，本实施例的涂布了调节湿度为71％的涂布液后在连续式微波干燥设备的转速与脱水量关系的数据，见表13。表13中，脱水量为该转速下一批基材(20张)的平均脱水量。
表13 B20基材在连续式微波干燥设备中转速与脱水量关系
Figure PCTCN2019093698-appb-000013
将表13中的数据进行线性拟合可以发现，B20基材的脱水量与设备转速也 呈良好线性关系。因此，对于较厚的基材，设定设备的转速同样可达到预定的脱水量，实现定量脱水。对于本实施例，将设备的转速设定为8即可达到要求的脱水量。
图6是本发明实施例十的湿度调节物品的湿度调节效果图，图6中，横坐标为时间(d，天)，纵坐标分别为温度(℃)和湿度(％)。
为了验证本实施例制得的湿度调节物品的性能，从表12所对应的干燥后基材(即在转速8条件下得到的干燥后基材)中随机选取一张并裁切成小片，称取10g后放入一个密闭容器(容积约为2L)，再放入吸了1克水的湿纸巾(时间点T1)。采用湿度计实时监测并记录该容器内的湿度，结果如图6所示。从图6中可以看出，放入湿纸巾前湿度保持在71％左右，放入湿纸巾后湿度迅速上升至75％左右，随后逐渐下降，经过一段时间又回到71％左右，且过后的较长时间内湿度均维持在该湿度附近，直至取出湿度调节物品(时间点T2)。可见，本实施例制备得到的湿度调节物品具有良好的调湿性能，能够精确地将环境湿度维持在目标湿度。
<对比例二>
本对比例二的环境湿度调节物品制造方法、热风干燥设备及条件与对比例一相同，但使用的基材以及涂布液与实施例十相同(即B20基材以及71％调节湿度的涂布液)。
本对比例的脱水情况数据结果见下表14。表14中，“干燥前”指干燥前的负载了涂布液的基材的重量，“30分钟”、“60分钟”、“75分钟”、“90分钟”和“100分钟”分别指热风烘箱干燥对应时间后的重量，其中单位均为克。
表12 B20基材在80℃热风烘箱中的脱水情况
Figure PCTCN2019093698-appb-000014
从表14可知，与对比例一类似，B20基材进行热风烘箱干燥时也存在脱水不均匀的问题。另外，干燥后的基材的表观性能也与对比例一类似，存在基材翘曲、基材表面变得紧密的缺陷。
实施例的作用与效果
根据上述实施例所涉及的涂布液、环境湿度调节物品及其制造方法，因为涂布液中氯化盐的质量分数范围是12～29.75％，将其涂布在基材后进行微波干燥即可使其转变为负载在基材上的调湿组合物；在该调湿组合物中，氯化盐的质量分数范围是18～44.6％，所以，实施例的环境湿度调节物品能够将环境湿度调节控制在65～75％，且该范围内不同配方的湿度调节物品能够精准地将目标环境维持在预定湿度，例如，与表2中的调节湿度是69％的调湿组合物相对应的湿度调节物品可以将目标环境湿度维持在69％±1％，特别适合于雪茄的保存。其他调节湿 度的湿度调节物品也分别适合不同物品的保存，例如其他烟草类产品等。
实施例的环境湿度调节物品中含有的调湿组合物是饱和溶液，其吸放湿容量大，且不需要预先进行湿度平衡，可以直接放入目标环境使用。同时，由于基材可以按照需求任意裁剪，因此，使用时可以根据目标环境的容积大小将基材裁剪成适当尺寸，然后直接放入目标环境即可，使用十分方便。
不仅如此，本实施例的环境湿度调节物品仅包含常见的氯化盐，使用这些氯化盐制备的组合物不仅成本低廉，而且在制造时对人体安全、对环境与被保存对象安全。而且，本实施例的环境湿度调节物品制造方法制造出的环境湿度调节物品在废弃后对自然环境也依然友好，可被自然分解，不会造成二次污染。
本实施例的环境湿度调节物品制造方法采用了微波干燥的方式来进行脱水，与传统的热风干燥方式相比，该微波干燥不仅不需要长时间的预热，而且可以对每一片基材连续均匀且精准的脱水。由此，基材上负载的涂布液可以均匀地脱去水分形成饱和溶液，其形成的结晶均匀分布在基材内部且粒径均一，这种均匀分布的饱和溶液不容易因环境湿度上升或下降而在基材内部发生大面积结晶溶解或结晶形成，因而更为稳定、不易失效。另外，基材表面不会因脱水不均匀而形成大颗粒结晶，因此湿度调节物品的表面整齐光洁，裁切时也不会产生结晶粉尘。
不仅如此，微波干燥设备的设定转速与脱水量呈良好线性关系，因此通过调节微波干燥设备的转速即可控制基材的脱水量，从而实现定量脱水。所以，实施例的环境湿度调节物品制造方法中，脱水量可控，适用于制造含有不同的预定配比的调湿组合物的湿度调节物品。
另外，上述微波干燥的方式还可以保持基材的表面疏松的特性，使用时，环境中的空气更容易进入基材内部进行水分交换(即吸湿或放湿)，更快达到目标湿度，由此，实施例中的环境湿度调节物品具有快速调湿的特性。
实施例中，微波干燥采用连续式微波干燥设备进行，与现有的热风干燥设备相比，其不需要预热就能够将基材放入，因此有效生产时间更长。经估算，在同样的生产时间内，微波干燥使得B08基材干燥这一步骤的产能提高了40％(相对于热风烘箱干燥)，B20基材干燥的产能提高了129％。需要的脱水量越大，微波干燥的在节能、节省时间方面的优势就越明显。另外，连续式的微波干燥设备可以实现连续性生产，更容易匹配前一个步骤的涂布以及后一个步骤的裁切及包裹袋包裹等工序，使得整个制造方法中几乎不需要搬运基材等操作，降低人力成本且提高整体生产效率。
上述实施方式为本发明的优选案例，并不用来限制本发明的保护范围。
例如，实施例中，包裹袋采用可渗透水蒸气但不渗透液态溶液的薄壁材料制成。在本发明中，也可以在该包裹袋上设置小孔，并通过调节小孔的数量来改变湿度调节的速度(例如，小孔数量多则可以让湿度调节物品更快地与环境中空气接触，快速调湿)。进一步，本发明还可以采用另外的方式来进行包装，例如，在干燥后的基材表面覆盖透气材料制成的保护膜，使得湿度调节物品整体呈尺寸较大的片状，用户可以根据需求任意裁剪，使用更为方便。
实施例中所用的基材均为纸质基材，这类基材主要采用木浆、棉浆等制成，因此保水性强，能够吸附较多液体。本发明中，基材还可以采用其他类似材料制备，例如棉布、化纤类材料、无纺布、毛毡、多孔塑料、矿物基材等。

Claims (10)

  1. 一种涂布液，用于涂布在基材上从而制备将环境湿度控制在65～75％的环境湿度调节物品，其特征在于，包括：
    至少一种氯化盐和水，
    其中，所述氯化盐为NaCl、NH 4Cl、KCl和MgCl 2中的至少一种，
    所述氯化盐在组合物中的质量分数范围是12～29.75％。
  2. 一种环境湿度调节物品制造方法，用于制造将环境湿度控制在65～75％的环境湿度调节物品，其特征在于，包括以下步骤：
    步骤一，配置涂布液
    将至少一种氯化盐和水在不低于40℃的情况下配置成涂布液；
    步骤二，在基材上涂布涂布液
    在常温下将所述基材在涂布液中以1～15m/s的速度涂布，使得每立方厘米基材中负载有0.81～1.11克所述涂布液；
    步骤三，微波干燥
    对负载有所述涂布液的所述基材连续进行微波干燥，使得每立方厘米基材中负载有0.54～0.74克调湿组合物，
    其中，所述氯化盐为NaCl、NH 4Cl、KCl和MgCl 2中的至少一种，
    在所述涂布液中，所述氯化盐的质量分数范围是12～29.75％，
    在所述调湿组合物中，所述氯化盐的质量分数范围是18～44.6％，
    步骤三中，所述微波干燥的条件是在15～25KW对基材以1～3m/min的速度对所述基材进行干燥。
  3. 根据权利要求2所述的环境湿度调节物品制造方法，其特征在于：
    其中，所述调湿组合物包含一种所述氯化盐，
    所述氯化盐为NaCl，
    在所述涂布液中，所述氯化盐的质量分数范围是12～26.8％，
    在所述调湿组合物中，所述氯化盐的质量分数范围是18～40.2％。
  4. 根据权利要求2所述的环境湿度调节物品制造方法，其特征在于：
    其中，所述调湿组合物包含两种所述氯化盐，
    一种所述氯化盐为KCl和NH 4Cl中的任意一种，
    另一种所述氯化盐为NaCl，
    在所述涂布液中，所述NaCl的质量分数范围是7～16％，
    在所述涂布液中，所述NH 4Cl的质量分数范围是5～13.75％，
    在所述涂布液中，所述KCl的质量分数范围是2～10.5％，
    在所述调湿组合物中，所述NaCl的质量分数范围是10.5～24％，
    在所述调湿组合物中，所述NH 4Cl的质量分数范围是7.5～20.6％，
    在所述调湿组合物中，所述KCl的质量分数范围是3～15.75％。
  5. 根据权利要求4所述的环境湿度调节物品制造方法，其特征在于：
    其中，在所述涂布液中，所述NaCl的质量分数范围是11～15％，
    在所述涂布液中，所述NH 4Cl的质量分数范围是8～12％，
    在所述涂布液中，所述KCl的质量分数范围是3～8％，
    在所述调湿组合物中，所述NaCl的质量分数范围是16.5～22.5％，
    在所述调湿组合物中，所述NH 4Cl的质量分数范围是12～18％，
    在所述调湿组合物中，所述KCl的质量分数范围是4.5～12％。
  6. 根据权利要求5所述的环境湿度调节物品制造方法，其特征在于：
    其中，在所述涂布液中，所述NaCl的质量分数范围是14～14.8％，
    在所述涂布液中，所述NH 4Cl的质量分数范围是10～11.4％，
    在所述涂布液中，所述KCl的质量分数范围是5～7.4％，
    在所述调湿组合物中，所述NaCl的质量分数范围是21～22.6％，
    在所述调湿组合物中，所述NH 4Cl的质量分数范围是15～17.1％，
    在所述调湿组合物中，所述KCl的质量分数范围是7.5～11.1％。
  7. 根据权利要求1所述的环境湿度调节物品制造方法，其特征在于：
    其中，所述调湿组合物包含两种所述氯化盐，
    一种所述氯化盐为KCl，
    另一种所述氯化盐为MgCl 2，
    在所述涂布液中，所述MgCl 2的质量分数范围是6～17％，
    在所述涂布液中，所述KCl的质量分数范围是3～15％，
    在所述涂布液中，所有氯化盐的总质量分数范围是12～29.75％，
    在所述调湿组合物中，所述MgCl 2的质量分数范围是9～25.5％，
    在所述调湿组合物中，所述KCl的质量分数范围是4.5～22.5％，
    在所述调湿组合物中，所有氯化盐的总质量分数范围是18～44.6％。
  8. 根据权利要求1所述的环境湿度调节物品制造方法，其特征在于，还包括：
    步骤四，裁切基材
    对所述基材进行裁切，使得所述基材达到预定的大小，
    其中，所述基材的材料为纸类材料、棉布、化纤类材料、无纺布、毛毡、多孔塑料、矿物基材中的任意一种。
  9. 根据权利要求8所述的环境湿度调节物品制造方法，其特征在于，还包括：
    步骤五，包装
    采用包裹袋对负载有所述调湿组合物的所述基材进行容纳包裹。
  10. 一种环境湿度调节物品，用于将环境湿度调节控制在65～75％，其特征在于，采用如权利要求2～9中任一项所述的环境湿度调节物品制造方法制造而成。
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