CN111874438A

CN111874438A - Humidity control pad for sealing device and method for manufacturing same

Info

Publication number: CN111874438A
Application number: CN202010939991.5A
Authority: CN
Inventors: 沈跃华
Original assignee: Shanghai Hengyuan Macromolecular Materials Co ltd
Current assignee: Shanghai Hengyuan Macromolecular Materials Co ltd
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2020-11-03

Abstract

The invention provides a humidity control pad for a sealing device and a manufacturing method thereof, belonging to the field of humidity control agent, wherein the humidity control pad is arranged in the sealing device and used for controlling the humidity in the sealing device, and the humidity control pad is characterized by comprising the following components: from the top down pastes body membrane, humidifying piece, the first anti-complex film that prevents reverse osmosis, paper pad and the second of arranging in proper order and prevents reverse osmosis complex film, and wherein, pastes body membrane and has the gas permeability, can let steam permeate through, and the humidifying piece is used for absorbing and emits moisture in order to adjust humidity, and its area is less than the paper pad area, and first anti-reverse osmosis complex film and the second prevent reverse osmosis complex film and have the gas permeability for prevent that moisture from permeating paper pad. The manufacturing method of the humidity control cushion comprises the following steps: respectively pasting a first reverse osmosis prevention composite film and a second reverse osmosis prevention composite film on two sides of the paper pad; uniformly arranging a plurality of humidity control sheets on the first anti-reverse osmosis composite membrane; adsorbing the skin film on the surface of the humidity control sheet in a plastic suction mode; the portion having the humidifying sheet is cut into a predetermined shape.

Description

Humidity control pad for sealing device and method for manufacturing same

Technical Field

The invention belongs to the field of humidity control agents, and particularly relates to a humidity control pad for a sealing device and a manufacturing method thereof.

Background

The requirements for the relative humidity of the preservation environment, such as the preservation of food, the preservation of medicines and goods, are high, and a relatively stable humidity value is required. Currently, the humidity of the environment is mostly regulated and controlled by using the moisture absorption and release characteristics of certain materials, and the mode has the advantages of energy conservation, stable control, safety and the like, and is suitable for stable control of the humidity in a relatively closed small environment.

At present, most humidity control materials belong to the category of drying agents, mainly have a drying function, and can continuously absorb redundant water vapor in the environment. Desiccants are used in many food, commodity, and pharmaceutical industries. The desiccant is mostly granular in product form at present, and is packaged by a small air-permeable bag and placed at the bottom of a container for drying. However, the desiccant is difficult to dissipate heat, the position limitation also causes the problems that the precise humidity adjustment cannot be carried out on products with high humidity value requirements such as some medicines, and the like, the position reservation is needed for the desiccant, and meanwhile, the desiccant is easy to leak out in the form. Other humidity control forms include humidity control sheets, but most of the humidity control sheets have unsatisfactory humidity control capability due to problems such as air permeability of packaging materials.

In addition, a product having a film structure such as a humidity control sheet is often manufactured by a press method, but in the case of a layer structure containing a liquid, the liquid exudes due to the processing in this manner. Some processing and manufacturing methods also use a plastic suction method, but most of the current plastic suction methods are to punch holes on products, and the holes can damage the structure of the film to cause liquid in the film to seep out.

Disclosure of Invention

In order to solve the problems, the invention provides a humidity control pad for a sealing device, which adopts the following technical scheme:

the present invention provides a humidity control pad for a sealing device, which is provided in a sealing device and used for controlling the humidity in the sealing device, the humidity control pad comprising: from the top down pastes body membrane, humidifying piece, the first anti-complex film that prevents reverse osmosis, paper pad and the second of arranging in proper order and prevents reverse osmosis complex film, and wherein, pastes body membrane and has the gas permeability, can let steam permeate through, and the humidifying piece is used for absorbing and emits moisture in order to adjust humidity, and its area is less than the paper pad area, and first anti-reverse osmosis complex film and the second prevent reverse osmosis complex film and have the gas permeability for prevent that moisture from permeating paper pad.

The humidity control pad for a sealing device provided by the present invention may further have a feature that the adhesive film is a PE film or an SC film, and the humidity control sheet and a part of the first anti-reverse osmosis composite film are covered by a blister.

The humidity control pad for the sealing device provided by the invention can also have the characteristics that the first anti-reverse osmosis composite membrane and the second anti-reverse osmosis composite membrane are of a laminated structure and comprise anti-reverse osmosis layers and more than one breathable layer which are sequentially arranged, the anti-reverse osmosis layers are PE breathable films or PET breathable films, and the breathable layers are non-woven fabrics or paper.

The humidity control pad for a sealing device according to the present invention may further have a feature that a pattern or a character is printed on the surface of the second anti-reverse osmosis composite film adjacent to the paper pad.

The humidity control pad for a sealing device according to the present invention may further include a cap, wherein the sealing device has a paper pad having an area smaller than an inner surface of the cap, and the second anti-reverse osmosis composite film is bonded to the inner surface of the cap.

The humidity control pad for a sealing device according to the present invention may have a feature that the paper pad is fitted to the inner surface of the lid in shape and area, and the paper pad is fitted into the lid.

The present invention provides a method for manufacturing a humidity control mat for a sealing device, comprising: respectively pasting a first reverse osmosis prevention composite film and a second reverse osmosis prevention composite film on two sides of the paper pad; uniformly arranging a plurality of humidity control sheets on the first anti-reverse osmosis composite membrane; heating and softening the skin film, covering all the humidity-regulating sheets from one side surface of the humidity-regulating sheet far away from the first anti-reverse osmosis composite film, and vacuumizing from one side of the second anti-reverse osmosis composite film far away from the paper pad, so that the skin film is adsorbed on the surface of the humidity-regulating sheet in a plastic suction mode; the portion having the humidifying sheet is cut into a predetermined shape.

Action and Effect of the invention

According to the humidity control pad for the sealing device and the manufacturing method thereof, the humidity control pad is arranged in the sealing device and used for adjusting the humidity in the sealing device, and comprises an adhesive film, a humidity control sheet, a first anti-reverse-osmosis composite film, a paper pad and a second anti-reverse-osmosis composite film which are sequentially arranged from top to bottom. Wherein, the skin membrane has the gas permeability, can let steam permeate through, and the humidifying piece can absorb and emit moisture, and first anti-reverse osmosis complex film and second are prevented reverse osmosis complex film and are had gas permeability and anti-reverse osmosis nature for place moisture infiltration paper pad. The air permeability of the skin film stretched by the plastic suction process is enhanced, so that the moisture absorption and release rate of the humidity-adjusting pad is increased, and the moisture absorption and release capacity of the humidity-adjusting sheet is ensured. The anti-reverse osmosis performance of the first anti-reverse osmosis composite film and the second anti-reverse osmosis composite film prevents the surface coated skin film from being tilted due to the fact that the paper pad is wetted. The humidity control cushion of this embodiment can set up in different positions of sealing device's inside in a flexible way, can carry out the humidity to some products that humidity value precision required is higher, also makes the humidity control cushion difficult to damage.

Drawings

FIG. 1 is a schematic view of a humidity control mat for a sealing device according to an embodiment of the present invention;

fig. 2 is a graph showing the change in moisture absorption increment of the PP film, the PE film, and the SC film before and after the blister molding according to the embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The anti-reverse-osmosis composite membrane adopted by the embodiment of the invention is a gas-permeable anti-reverse-osmosis packing material structure of a disclosed patent (patent publication number: CN 203427406U).

< example >

The present embodiment provides a humidity control pad for a sealing device, which is used for controlling the humidity inside the sealing device.

FIG. 1 is a schematic structural view of a humidity control mat for a sealing device according to an embodiment of the present invention.

As shown in fig. 1, the humidity control pad 100 for a sealing device of the present embodiment includes a skin film 1, a humidity control sheet 2, a first anti-reverse osmosis composite film 3, a paper pad 4, and a second anti-reverse osmosis composite film 5, which are arranged in this order from top to bottom.

Wherein, the first anti-reverse osmosis composite film 3, the paper pad 4 and the second anti-reverse osmosis composite film 5 form a bottom plate 10.

The shapes and areas of the first anti-reverse-osmosis composite membrane 3, the paper pad 4 and the second anti-reverse-osmosis composite membrane 5 are consistent, the area of the humidity control sheet 2 is smaller than that of the paper pad 4, the area of the adhesive membrane 1 is matched with the humidity control sheet 2 and the paper pad 4, and the adhesive membrane covers the humidity control sheet 2 and a part of the first anti-reverse-osmosis composite membrane 3.

The adhesive film 1 has air permeability, can allow water vapor to permeate, and has a slow release effect on liquid. The pasting film 1 is subjected to plastic uptake processing to carry out pasting packaging on the humidity-regulating sheet 2, so that the humidity-regulating sheet 2 is fixed on the bottom plate 10.

In this embodiment, the first adhesive film 1 is a PE (polyethylene) film. In other embodiments, an SC film (sodium ion PE film) or a PP film may be selected, and the skin film 1 with different thickness and different material may be selected according to the moisture absorption and desorption rate requirement of the user.

The humidity control sheet 2 is a composition for absorbing moisture or releasing moisture to control humidity, and the area of the humidity control sheet 2 is smaller than that of the paper pad 4.

In this embodiment, the diameter of the humidity control sheet 2 is 30 mm. In other embodiments, the thickness of the conditioning sheet may be varied according to the different moisture absorption rates required for different volumes of the sealing means; the formula and the diameter of the humidity conditioning agent for preparing the humidity conditioning sheet can be changed according to different humidity ranges.

The first reverse osmosis prevention composite film 3 is of a layered structure and comprises a reverse osmosis prevention layer and more than one breathable layer, wherein the reverse osmosis prevention layer is a PE breathable film or a PET breathable film, and the breathable layer is non-woven fabric or paper. The first anti-reverse osmosis composite film 3 has air permeability for preventing moisture in the humidifying sheet 2 from permeating the paper pad 4.

The paper pad 4 also has air permeability. In this embodiment, the paper pad 4 has the same area as the inner surface of the lid of the sealing device and is fitted into the lid. In other embodiments, the paper pad 4 may be smaller in size than the inside surface of the lid, and may be attached to the inside surface of the lid with an adhesive.

The second anti-reverse osmosis composite membrane 5 is of a laminated structure and comprises an anti-reverse osmosis layer and more than one breathable layer, wherein the anti-reverse osmosis layer is a PE breathable film or a PET breathable film, and the breathable layer is non-woven fabric or paper. The second anti-reverse osmosis composite film 5 and the first anti-reverse osmosis composite film 3 enable the tension of two surfaces of the bottom plate to be the same, so that the bottom plate is flat and can be subjected to plastic suction processing. The adjacent surface of the second anti-reverse osmosis composite film 5 and the paper pad 4 is printed with patterns or characters.

The invention also provides a preparation method of the humidity control cushion for the sealing device, which comprises the following steps:

respectively pasting the first anti-reverse osmosis composite membrane 3 and the second anti-reverse osmosis composite membrane 5 on two sides of the paper pad 4 to form a bottom plate;

a plurality of humidity control sheets 2 are uniformly arranged on the first reverse osmosis prevention composite membrane 3;

heating the paste film PE film to a softening state, covering the humidity adjusting sheet 2 from one side surface of the humidity adjusting sheet 2 far away from the first anti-reverse osmosis composite film 3, and vacuumizing from one side of the second anti-reverse osmosis composite film 5 far away from the paper pad 4, namely adsorbing the paste film 2 on the surface of the humidity adjusting sheet 2 in a plastic suction mode;

the humidity conditioning sheet is partially cut into a predetermined shape to obtain the humidity conditioning pad 100.

Experiment one:

in this embodiment, the moisture control sheet 100 is processed by a blister process, and the air permeability of the skin film 1 is increased to improve the moisture absorption and release capacity of the moisture control sheet 100.

Experiments of this example provide comparative experimental data comparing the humidity conditioning capacity of the humidity conditioning pad 100 of the present invention using blister packaging with humidity conditioning articles not using blister packaging. The method specifically comprises the following steps: a prototype humidity control sheet 2 with a diameter of 30mm and a humidity (RH) of 50% was taken, and three packaging structures were used to compare the moisture absorption and desorption rates. The three packages were a. bottom plate + PE skin film stretch (i.e. the humidity control pad of the present invention), b. air permeable paper bag (purchased), c.pe film bag, respectively.

The experimental steps are as follows: the three humidity-regulating tablets of 18 g are packaged and respectively placed in a 1000mL sealed box with a wireless temperature and humidity monitor, the initial humidity in the sealed box is balanced (RH is about 50%), and then 1 g of fiber drying agent is respectively placed in the sealed box to observe the humidity change.

The results are shown below:

TABLE 1 comparison of moisture absorption and desorption rates for three packaging configurations

As shown in table 1, in the humidity control pad 100 and the humidity control sheet packaged in the air-permeable paper bag of the present embodiment, after 7 days, the humidity change law and rate are similar, both the humidity in the first 3 days is reduced, and the humidity in the last 4 days is returned to the original 50%; the bag made of the skin PE film without plastic uptake processing can only slowly recover to the humidity of 23.63 percent after the humidity is reduced. The results demonstrated that the humidity control pad 100 of the present example and the humidity control sheet packed in the air-permeable paper bag had almost no difference in the moisture absorption and desorption rates, whereas the humidity control sheet of the skin-type PE film bag which had not been subjected to the plastic absorption processing had poor air permeability and could not balance the humidity in the box by desorption.

In addition, the drying agent and the three packaging structures are respectively weighed, and the moisture absorption increment of the drying agent and the moisture desorption decrement of the humidity adjusting sheet are observed.

The results are shown below:

TABLE 2 comparison of moisture content of humidity control sheet and moisture absorption of desiccant in three packaging configurations

Weight difference	The structure of the invention	Ventilating paper bag	Skin PE film
				Humidity control tablet (weightlessness, g)	0.605	0.587	0.087
Desiccant (weight gain, g)	0.674	0.656	0.275

As shown in table 2, in the same sealed space, the weight gain of the desiccant is greater than the weight loss of the humidity control sheet, which indicates that the hasp box is not absolutely sealed, and the desiccant also absorbs the moisture in the external environment; the weight loss and the weight gain of the packaging structure, the humidity control sheet of the breathable paper bag and the drying agent of the embodiment are not greatly different and are about 0.6 g; the weight loss and weight gain of the humidity control sheet and the drying agent packaged by the conformable PE film are obviously smaller than those of the humidity control sheet and the drying agent packaged by the conformable PE film. The results prove that the humidity inside and outside the sealed box packaged by the PE film in the box can not be balanced by the moisture release because the moisture difference inside and outside the sealed box is large and the moisture absorption amount of the desiccant is far greater than the moisture release amount of the humidity control sheet, and the bag made of the PE film only can not be used for balancing the humidity inside the box.

In summary, experiments in this embodiment prove that the humidity control pad 100 of this embodiment has moisture absorption and moisture release capabilities comparable to or even superior to those of the existing products, but the air-permeable paper bag cannot be processed by using the blister process, and can only be made into the traditional bagged desiccant. The bag made of the conformable PE film alone cannot balance the humidity in the box by releasing moisture.

Experiment two:

the skin film 1 of the embodiment can be made of different materials with different air permeability, and the moisture absorption and release capacity of the humidity control sheet 100 is improved by using a plastic uptake process.

Experiment two of this example provides moisture permeability of different materials before and after blister stretching. Commonly used skin packaging films include: plastic films such as PVC (polyvinyl chloride), PET (polyester resin), PP (polypropylene), PE (polyethylene), and the like. Wherein, PVC contains chloride ions, which does not meet the environmental protection requirement, while PET is hard, and when the PET is attached to a wet and soft humidity control sheet, the humidity control sheet can deform. So the second experiment in this example is specifically: two types of materials, PP and PE, are selected for comparison test, and the PE thin film is divided into a common PE film and an SC film (sodium ion PE film). Three kinds of adhesive films, namely a pre-glued PP film with 8 silk thickness, a common PE film and an SC film, are selected for the experiment to carry out comparison test.

The experimental steps are as follows: bags were made with a film of 140 x 100mm open size and an equal amount of 9 grams of fibrous desiccant was placed in the bags and placed in a constant temperature and humidity cabinet at 25 c and 90% humidity and weighed every 24 hours until 15 days.

The results are shown below:

TABLE 3 air permeability (moisture absorption rate) (unit:%)

Fig. 2 is a graph showing the change in moisture absorption increase of the PP film, the PE film, and the SC film of the present example before and after the blister.

As shown in table 3 and fig. 2, the moisture absorptance before and after stretching of the PP film was 1.83% and 3.49%, respectively, both of which were less than 5%; the common PE film is 4.26% before stretching, and the moisture absorption rate after stretching is 10.38%; and the moisture absorption rates of the SC film after plastic suction and stretching are 14.3 percent and 16.28 percent respectively.

According to empirical values, if the moisture absorption rate is less than 5% in 15 days, the moisture permeability is not satisfied, and the result proves that the moisture permeability of the PP film before and after plastic uptake is not satisfied, while the moisture absorption rates of the PE film and the SC film after plastic uptake are far more than 5%, the requirements can be satisfied, and meanwhile, the moisture permeability of the SC film after plastic uptake is better. Therefore, among these three films, a PE film and an SC film after blister stretching can be used as the adherend film 1, and an SC film is preferable.

Experiment three:

the first anti-reverse osmosis composite membrane 3 and the second anti-reverse osmosis composite membrane 5 of the present embodiment have air permeability.

Experiment three of this example provides a comparison of whether or not a humidity control pad using a reverse osmosis resistant composite membrane was used. The method specifically comprises the following steps: a humidity-adjusting cushion prepared by the following steps is taken: uniformly arranging a plurality of humidity-regulating sheets 2 on the paper pad 4, adsorbing the adhesive film 1 on the surfaces of the humidity-regulating sheets 2 and the paper pad 4 in a plastic suction mode, and cutting parts of the humidity-regulating sheets 2 into preset shapes to obtain the humidity-regulating pad 100; the humidity control pads 100 of the present example were subjected to comparative experiments, i.e., comparative experiments with or without the reverse osmosis prevention composite membrane.

The experimental steps are as follows: the two humidity control cushions are respectively placed in a closed device with certain humidity and the same humidity, and are taken out for observation after a period of time.

The results are shown below: the humidity control mat 100 of the present embodiment does not significantly change before and after being placed in the sealing device, and the humidity control mat base plate without the anti-reverse osmosis composite film causes the skin film coated on the surface to be lifted due to moisture.

The results show that, since the humidity control sheet 2 of the present invention is a composition with a certain amount of moisture, when the anti-reverse osmosis composite film is not used, the bottom plate may be affected with moisture to cause the skin film coated on the surface to lift up, even fall off. However, if an airtight film is used, the process of skin blistering (vacuum pumping) cannot be completed, and the moisture absorbing and releasing speed of the product is affected.

In addition, experiment three of this example also provides an experiment using only one anti-reverse osmosis composite membrane. The experiment step is to cover the anti-reverse osmosis composite film on one side of the paper pad 4, and the experiment result shows that when only one side of the paper pad 4 is covered with the film, the bottom plate is bent and unsmooth due to different tensions of the two sides, and the next plastic uptake process cannot be carried out.

In summary, the two sides of the paper pad 4 in the embodiment of the present invention are both covered with the anti-reverse-osmosis covering film.

Examples effects and effects

The humidity control pad for the sealing device is arranged in the sealing device and used for adjusting the humidity in the sealing device, and comprises an adhesive film, a humidity control sheet, a first anti-reverse-osmosis composite film, a paper pad and a second anti-reverse-osmosis composite film which are sequentially arranged from top to bottom. Wherein, the skin membrane has the gas permeability, can let steam permeate through, and the humidifying piece can absorb and emit moisture, and first anti-reverse osmosis complex film and second are prevented reverse osmosis complex film and are had gas permeability and anti-reverse osmosis nature for place moisture infiltration paper pad. The air permeability of the adhesive film enables the moisture absorption rate of the humidity control pad to be increased, and meanwhile, the moisture absorption and release capacity of the humidity control sheet is guaranteed. The anti-reverse osmosis performance of the first anti-reverse osmosis composite film and the second anti-reverse osmosis composite film prevents the surface coated skin film from being tilted due to the fact that the paper pad is wetted. The humidity control cushion of the embodiment can be flexibly arranged at different positions in the sealing device, and can regulate humidity of some products with high humidity value precision requirements, so that the humidity control cushion is not easy to damage and lose effectiveness.

The present example also provides a method for manufacturing the humidity control pad for a sealing device. Since each layer of the humidity control pad in this embodiment has air permeability, the blister processing can be performed without punching, and the inner material can be fixed by laminating the skin film on the humidity control sheet by blister. The vacuum forming method heats and stretches the adhesive film, so that the aperture of the adhesive film is increased, the air permeability of the adhesive film is improved, and the moisture absorption and release rates of the humidity control pad are increased. Meanwhile, the liquid in the humidity control sheet can be prevented from seeping out in the processing process by plastic suction processing.

Further, the patch film of the humidity control pad for the sealing device of the present embodiment is a PE patch film or an SC film, and a comparison experiment shows that the moisture absorption rates of the drying agents using the two patch films both exceed empirical values, and the moisture absorption rate after stretching is significantly improved.

Further, the first anti-reverse osmosis composite membrane and the second anti-reverse osmosis composite membrane of the humidity control pad for the sealing device of the embodiment are of a layered structure and comprise the anti-reverse osmosis layer and the air-permeable layer with more than one layer, which are sequentially arranged, so that the first anti-reverse osmosis composite membrane and the second anti-reverse osmosis composite membrane have air permeability and can prevent moisture from permeating. In addition, patterns or characters can be printed on the adjacent surface of the second anti-reverse-osmosis composite film and the paper pad, so that a user can print labels, trademarks and the like according to requirements.

Further, the shape of the paper pad of the humidity control pad for a sealing device of the present embodiment can be matched with the lid of the sealing device, and the paper pad can be fitted or bonded to the inner wall of the lid by using an adhesive, so that the humidity control pad of the present embodiment can be applied more flexibly.

The above-described embodiments are merely illustrative of specific embodiments of the present invention, and the present invention is not limited to the description of the above-described embodiments.

In the present embodiment, the humidity control pad 100 is provided inside the cover of the sealing device so as to match the shape of the inside of the cover, but in other embodiments, the humidity control pad 100 may be provided on the inner wall of the device or at another position, and the shape and area thereof may be changed according to the shape and area.

Claims

1. A humidity control mat for a sealing device, which is provided in a sealing device and is used for controlling the humidity in the sealing device, characterized by comprising:

a pasting film, a humidity adjusting sheet, a first anti-reverse osmosis composite film, a paper pad and a second anti-reverse osmosis composite film which are arranged from top to bottom in sequence,

wherein the adhesive film has air permeability and can allow water vapor to permeate through,

the humidity regulating sheet is used for absorbing and releasing water to regulate humidity, the area of the humidity regulating sheet is smaller than that of the paper pad,

the first and second reverse osmosis prevention composite films have air permeability for preventing moisture from permeating into the paper mat.

2. The humidity control mat for a sealing device according to claim 1, wherein:

the sticker film is a PE film or an SC film, and covers the humidity control sheet and a part of the first anti-reverse osmosis composite film in a plastic suction mode.

3. The humidity control mat for a sealing device according to claim 1, wherein:

wherein the first reverse osmosis prevention composite membrane and the second reverse osmosis prevention composite membrane are of a multilayer structure and comprise reverse osmosis prevention layers and more than one breathable layer which are sequentially arranged,

the anti-reverse osmosis layer is a PE breathable film or a PET breathable film,

the breathable layer is made of non-woven fabric or paper.

4. The humidity control mat for a sealing device according to claim 1, wherein:

and patterns or characters are printed on the adjacent surface of the second anti-reverse osmosis composite film and the paper pad.

5. The humidity control mat for a sealing device according to claim 1, wherein:

wherein the sealing device is provided with a cover,

the area of the paper pad is smaller than that of the inner side surface of the cover,

the second anti-reverse osmosis composite membrane is glued to the inner side of the lid.

6. The humidity control mat for a sealing device according to claim 5, wherein:

the shape and the area of the paper pad are matched with the inner side face of the cover, and the paper pad is embedded in the cover.

7. A method for manufacturing a humidity control mat for a sealing device according to any one of claims 1 to 6, comprising:

the first reverse osmosis prevention composite film and the second reverse osmosis prevention composite film are respectively attached to two sides of the paper pad;

uniformly arranging a plurality of humidity control sheets on the first anti-reverse osmosis composite membrane;

heating and softening the skin film, covering all the humidity-regulating sheets from one side surface of the humidity-regulating sheet far away from the first anti-reverse osmosis composite film, and vacuumizing from one side of the second anti-reverse osmosis composite film far away from the paper pad, so that the skin film is adsorbed on the surface of the humidity-regulating sheet in a plastic suction mode;

cutting the portion having the humidity control sheet into a predetermined shape.