CN211810864U - Packaging structure for regulating and controlling release rate of bactericide - Google Patents
Packaging structure for regulating and controlling release rate of bactericide Download PDFInfo
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Abstract
The utility model discloses a packaging structure of regulation and control germicide release rate relates to packaging structure technical field. The packaging structure for regulating and controlling the release rate of the bactericide comprises an activation slow-release layer and a protection controlled-release layer, wherein the activation slow-release layer wraps a solid-phase bactericide, and the protection controlled-release layer wraps the outside of the activation slow-release layer; said active sustained-release layerThe water vapor transmission rate is 100-224 h); the protective controlled release layer is provided with at least one air hole. The scheme adopts the activation slow release layer with high air permeability, provides better moisture absorption and release characteristics, and the protection controlled release layer has a buffering effect, provides a more stable environment for the activation slow release layer, reduces the influence of external factors such as air disturbance on the release rate, and controls the release rate of the effective components to be more balanced.
Description
Technical Field
The utility model relates to a packaging structure technical field especially relates to a regulation and control germicide release rate's packaging structure.
Background
Epidemic diseases such as SARS, MERS, swine flu, avian flu, 2019-nCoV and the like which are outbreaked in recent years take droplet propagation and air propagation as main propagation ways, reduce harmful microorganisms floating in space and contribute to reducing the infection probability.
The current common methods for air disinfection comprise ultraviolet rays, ozone, hydrogen peroxide and the like, chlorine dioxide is an efficient disinfection component which is popularized and used recently, can almost kill all bacteria (including methicillin-resistant staphylococcus), fungi (such as candida albicans, trichophyton rubrum and aspergillus niger) and viruses (such as poliovirus, coxsackievirus, echovirus, hepatitis B virus, influenza virus and SARS), and has a disinfection effect superior to that of chlorine and ozone. In addition, chlorine dioxide can oxidize and remove various harmful or peculiar smell substances in the air, such as formaldehyde, toluene, ammonia, sulfide and the like. In addition, the chlorine dioxide is not easy to form halogenated compounds with carcinogenic risks, has no carcinogenic, teratogenic and mutagenic effects on higher animals, has the safety grade of A1 by the world health organization, is used for space sterilization, odor removal or food preservation, and has the advantage that other disinfectants are not comparable to the prior disinfectant.
Recent studies have shown safe concentrations (0.1ppm, 0.28 mg/m)3) The following chlorine dioxide gas also reduces the number of viable microorganisms floating in the indoor air, and therefore, maintaining the chlorine dioxide concentration at an appropriate concentration is critical to achieving a good disinfection effect and ensuring safety.
The aim of regulating the release rate of the chlorine dioxide can be fulfilled by adding a packaging structure on the outer surface of the solid-phase chlorine dioxide preparation. However, in the prior art, such as CN201280021407.1 and CN201810401256.1, a two-layer packaging structure is adopted, i.e., solid-phase chlorine dioxide is contained in a breathable bag, and the outside of the breathable bag is sealed and stored by a layer of packaging; when in use, the breathable bag is taken out and hung in the space. The packaging structure can cause that the release rate of solid-phase chlorine dioxide is greatly influenced by gas flow and has large fluctuation; is inconvenient to take and easy to burn; the use scene is limited, because the release comes from all directions, each surface needs to keep a distance with surrounding objects, and the objects cannot be placed on a table top or close to a wall for a long time, otherwise, fading and corrosion can be caused; the strength of the breathable bag is low, and the chlorine dioxide released in the using process can accelerate the aging of the breathable bag and is easy to damage, so that the content is leaked and spilled to cause harm.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is that mention not enough in the background art, improves solid phase germicide, for example the packaging structure of solid phase chlorine dioxide slow-release agent, solves germicide and has the unstable, use potential safety hazard scheduling problem of active ingredient release rate when using.
In order to solve the above problem, the utility model provides a following technical scheme:
a packaging structure for regulating and controlling the release rate of a bactericide comprises an activation slow-release layer and a protection controlled-release layer, wherein the activation slow-release layer wraps a solid-phase bactericide, and the protection controlled-release layer wraps the outside of the activation slow-release layer; the water vapor transmission rate of the activation slow release layer is 100-5000 g/(m)224 h); the protective controlled release layer is provided with at least one air hole.
The further technical proposal is that the gram weight of the activation slow release layer is 20-200g/m2。
The further technical scheme is that the activation slow release layer is a plastic composite film.
The further technical proposal is that the gram weight of the protective controlled release layer is 50-2000g/m2。
The further technical proposal is that the aperture of the air hole is 1-8 mm.
The further technical scheme is that the protective controlled release layer is made of an opaque material.
The further technical scheme is that the protective controlled release layer is made of one of paperboard, a plastic composite film and a composite aluminum film.
The further technical proposal is that the protective controlled release layer can be provided with hanging holes, hooks, hanging ropes, viscose or suckers.
The further technical scheme is that the disinfectant liquid is characterized by also comprising a termination sealing layer, wherein the termination sealing layer is used for hermetically packaging the solid-phase bactericide wrapped with the activation slow-release layer and the protection controlled-release layer, and the water vapor transmission rate of the termination sealing layer is less than or equal to 6g/(m & lt/& gt)2·24h)。
The further technical scheme is that the sealing stopping layer is a composite film containing aluminum.
Compared with the prior art, the utility model discloses the technical effect that can reach includes:
1. the scheme adopts the activation slow release layer with high air permeability, provides better moisture absorption and release characteristics, the protection controlled release layer has a buffering effect, provides a more stable environment for the activation slow release layer, reduces the influence of external factors such as air disturbance on the release rate, and can control the release rate of the active ingredients of the bactericide to be more balanced.
2. According to the scheme, through the matching of the activated slow release layer and the protective controlled release layer, the water vapor transmission rate of the activated slow release layer is adjusted or the air hole density and the air hole position of the protective controlled release layer are adjusted, the release rate and direction of the active ingredients of the bactericide can be adjusted, the use flexibility is improved, the material selection space is enlarged, and the production cost is controllable.
Drawings
For better clarity of the technical solution of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a package structure for regulating the release rate of a bactericide according to an embodiment of the present invention;
FIG. 2 is a schematic view of a package structure for regulating the release rate of a bactericide according to another embodiment of the present invention;
FIG. 3 is a graph showing the results of a chlorine dioxide moisture absorption rate test;
fig. 4 is a graph showing the results of chlorine dioxide release rate tests.
Reference numerals
The solid phase bactericide 10 activates the slow release layer 20, protects the controlled release layer 30, terminates the seal-inhibiting layer 40, the air hole 50.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, wherein like component numbers represent like components in the drawings. It is obvious that the embodiments to be described below are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the embodiments of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the invention. As used in the description of the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be noted that there are many standard test methods for water vapor transmission rate (or water vapor transmission amount), and the data for different test methods are different and may not be directly comparable. The standard adopted by the water vapor transmission rate of the activated slow release layer in the utility model is part 2 of the YY/T0471.2-2014 contact wound dressing test method: the water vapor transmission rate of the breathable film dressing, the test temperature is 37 +/-1 ℃, and the relative humidity is less than 20%; the standard adopted for the water vapor transmission amount of the stop seal layer is GB/T1037-1988 plastic film and sheet water vapor permeability test method cup method, the test temperature is 38 ℃ plus or minus 0.6 ℃, and the relative humidity is 90 percent plus or minus 2 percent. The skilled person in the art can test the water vapor transmission rate of the activated slow release layer or the water vapor transmission amount of the stopped sealing layer by using the two methods, and the result falls into the range of the utility model, which belongs to the protection scope of the utility model
The utility model provides a regulation and control germicide release rate's packaging structure for splendid attire germicide, especially solid phase germicide, for example solid phase chlorine dioxide generator, its effective bactericidal composition is chlorine dioxide.
The solid-phase chlorine dioxide generating agent refers to solid powder or granules capable of activating to release chlorine dioxide, and the preparation method thereof can refer to the prior art (such as CN200780005471.X, CN201410180126.1, CN201810401256.1), and the solid-phase chlorine dioxide generating agent is generally prepared by mixing chlorite, an acidic activating agent and an auxiliary agent for adjusting the release rate.
Referring to fig. 1, an embodiment of the present invention provides a packaging structure for regulating a release rate of a bactericide, which includes an activation slow-release layer and a protection controlled-release layer, wherein the activation slow-release layer wraps a solid-phase bactericide, and the protection controlled-release layer wraps an outer side of the activation slow-release layer; the water vapor transmission rate of the activation slow release layer is 100-5000 g/(m)224h), preferably, the water vapor transmission rate of the activation slow release layer is 500-224 h); the protective controlled release layer is provided with at least one air hole.
It will be appreciated that the active sustained release layer should have a sufficiently dense fine porosity to ensure that the active sustained release layer has good air permeability and does not allow the contents to leak out.
For example, in one embodiment, the water vapor transmission rate of the active sustained release layer is 300 g/(m)2·24h)。
In one embodiment, the water vapor transmission rate of the activated sustained release layer is 1500 g/(m)2·24h)。
In one embodiment, the activationThe water vapor transmission rate of the slow release layer is 2500 g/(m)2·24h)。
In one embodiment, the water vapor transmission rate of the activation slow release layer is 3500 g/(m)2·24h)。
In one embodiment, the water vapor transmission rate of the active sustained release layer is 4500 g/(m)2·24h)。
The activation slow-release layer is used for being matched with a solid-phase bactericide to realize the activation and slow release of effective bactericidal components, the activation slow-release layer adopts a membrane material with waterproof and breathable functions, and the gram weight of the activation slow-release layer is 20-200g/m2. Preferably, the gram weight of the activation slow release layer is 30-100g/m2。
The scheme adopts the activation slow release layer with high air permeability, and provides better moisture absorption and release characteristics; the protective controlled release layer has a buffering effect, provides a more stable environment for activating the controlled release layer, reduces the influence of external factors such as air disturbance on the release rate, and can control the release rate of the effective sterilization components to be more balanced.
By matching the activated slow release layer with the protective controlled release layer, the water vapor transmission rate of the activated slow release layer is adjusted or the air hole density and the air hole direction of the protective controlled release layer are adjusted, the release rate of the effective sterilization components can be adjusted, the use flexibility is improved, the material selection space is enlarged, and the production cost is controllable.
Furthermore, the activation slow release layer is a composite film with heat sealing and air permeability, the structure of the activation slow release layer is an enhancement layer/heat sealing layer, and the enhancement layer is made of one of paper, cellulose, cellophane, polyester, polyamide, polypropylene and polyethylene; the heat sealing layer is made of polyolefin or modified polyolefin. The compounding process can be dry compounding, wet compounding, extrusion compounding, co-extrusion compounding and the like. The symbol "/" denotes a complex.
In specific implementation, the protective controlled release layer is used for containing the active controlled release layer, protecting the active controlled release layer, and regulating and controlling the release rate and the airflow direction.
In specific implementation, the protective controlled release layer is provided with air holes, and the air holes can be round, oval, square, triangular or other shapes, preferably round. The pore diameter of the air holes is 1-8mm, preferably 2-5 mm.
It can be understood that the protective controlled release layer can provide one more layer of protection for the active controlled release layer as the use package of the product, reduce the risk caused by inadvertent contact with the bactericide or uncontrolled release, bear printing and decoration information, and be provided with hanging holes, hooks, hanging ropes, adhesive or suckers and the like so as to be convenient to hang or adhere when in use.
It can be understood that the protective controlled release layer with a certain gram weight can make the protective controlled release layer more rigid and more breathable, the gram weight is small and light, the protective property and the texture are poor, and the gram weight is too large, so that the cost of the packaging material is greatly increased. Therefore, in specific implementation, the protective controlled release layer is suitably thick and has a gram weight of 50-2000g/m2. Preferably, the gram weight of the protective controlled release layer is 100-1000g/m2。
For example, in one embodiment, the protective controlled release layer has a grammage of 300g/m2。
In one embodiment, the gram weight of the protective controlled release layer is 600g/m2。
In one embodiment, the gram weight of the protective controlled release layer is 900g/m2。
In specific implementation, the protective controlled release layer is made of opaque materials, is opaque except for the opening, reduces the light decomposition of effective sterilization components (such as chlorine dioxide), and has a certain waterproof effect. For example, the protective controlled release layer can be made of a material which is convenient for printing, decoration, modeling and hole opening and has better light-shielding property, thicker paperboard or plastic composite film can be adopted, and in order to improve the light-shielding property, the modes of increasing the material thickness, adding dark color master batch, vacuum aluminum plating, composite aluminum film and the like can be adopted.
For example, in one embodiment, the protective controlled release layer is made of an opaque material.
In other embodiments, the protective controlled release layer is made of one of cardboard, plastic composite film and composite aluminum film.
Referring to fig. 2, another embodiment of the present invention provides a package structure for regulating the release rate of a bactericide, which comprises a sealing layer, and a sealing layerThe sealing-stopping layer is used for sealing and packaging the solid-phase bactericide wrapped with the activation slow-release layer and the protection controlled-release layer, and the water vapor transmission rate of the sealing-stopping layer is less than or equal to 6 g/(m)2·24h)。
As can be appreciated, the seal-stop layer acts as a barrier to prevent moisture, gas, and light from affecting the storage stability of the product and is the outermost packaging layer of the product. The water vapor transmission rate of the sealing-inhibiting layer (according to GB/T1037-1988, the temperature is 38 ℃ +/-0.6 ℃, and the relative humidity is 90% +/-2%) is less than or equal to 6 g/(m)224h), preferably ≦ 1 g/(m)224h), the termination forbidden layer is made of a high-barrier film material, preferably a composite film containing aluminum.
In specific implementation, the structure of the seal stopping layer is a printing layer/a barrier layer/a heat sealing layer. The printing layer can be made of polyester, polyamide or polypropylene; the barrier layer is aluminum foil, aluminum-plated film or aluminum oxide; the heat sealing layer is polyolefin or modified polyolefin. The compounding process can be dry compounding, wet compounding, extrusion compounding, co-extrusion compounding and the like. The symbol "/" denotes a complex.
It can be understood that for the packaging size of product formation, the activation sustained-release layer < the protection controlled-release layer < the termination sealing layer ensures that the activation sustained-release layer can be completely filled into the protection controlled-release layer, and the protection controlled-release layer can be directly filled into the termination sealing layer.
When the water vapor transmission rate of the activated sustained-release layer is high, the open area of the protective controlled-release layer can be reduced; when the water vapor transmission rate of the activated sustained-release layer is low, the open area of the protective controlled-release layer can be increased.
Due to the protection of the protective controlled release layer, the problems of thickness, strength, printing and the like can not be considered too much for activating the controlled release layer, so that the selection has more flexibility.
During storage, the solid-phase bactericide is filled into the activation slow release layer for heat sealing, the activation slow release layer is filled into the protection controlled release layer for sealing, and finally the protection controlled release layer is filled into the sealing stopping layer for sealing.
When in use, the forbidden layer is cut off and stopped, and the product comprising the protective controlled release layer is taken out for direct use.
According to the packaging structure for regulating the release rate of the bactericide, the aluminum-containing sealing-stopping layer can effectively protect the contents, and the decomposition loss of effective components caused by water, air, illumination and other factors is prevented.
The bactericide slow-release agent adopting the packaging structure of the embodiment can be carried at any time, can sterilize and disinfect the ambient air, and can also be adhered or hung in indoor spaces, carriages, refrigerators, shoe cabinets, garbage cans and other places needing sterilization or odor removal.
Taking a solid-phase chlorine dioxide slow-release agent as an example of a solid-phase bactericide, the detailed scheme is as follows:
example 1
A packaging structure for regulating and controlling the release rate of a bactericide comprises an activation slow-release layer, a protection controlled-release layer and a stop seal layer.
The activation slow-release layer adopts compound ventilated membrane, and the structure material is: paper/polyethylene fiber/polyethylene, gram weight 80g/m2Water vapor transmission rate (according to YY/T0471.2-2014, temperature 37 ℃. + -. 1 ℃, relative humidity)<20%) are: 500 g/(m)224h), white, opaque. The bag size is 50mm multiplied by 80 mm.
The protective controlled release layer adopts a composite aluminum film, the material of the composite aluminum film comprises 18/aluminum 7/transparent PE140 of biaxially oriented polypropylene, and the gram weight before opening is 120g/m2The water vapor transmission amount (according to GB/T1037-224h), light-tight. Size after bagging: 70mm x 110mm, 15 round holes with diameter of 5mm are arranged on the bag, and the total open area is 294mm2。
The stop seal layer adopts a composite aluminum film, and the structural material is biaxially oriented polypropylene 18/aluminum 7/transparent PE140, and the gram weight is 120g/m2The water vapor transmission (according to GB/T1037-1988, the temperature is 38 ℃ plus or minus 0.6 ℃, and the relative humidity is 90 percent plus or minus 2 percent) is less than or equal to 2 g/(m)224h), light-tight. Size after bagging: 80mm by 120 mm.
Example 2
A packaging structure for regulating and controlling the release rate of a bactericide comprises an activation slow-release layer, a protection controlled-release layer and a stop seal layer.
The activation slow release layer adopts a composite breathable film and is made of a structural material: polypropylene nonwoven/polyethylene, gram weight 100 g/square meter, water vapor transmission rate (according to YY/T0471.2-2014, temperature 37 +/-1 ℃, relative humidity<20%) are: 2500 g/(m)224h), white, opaque. The bag size is 50mm multiplied by 80 mm.
The protective controlled release layer adopts a composite aluminum film, the structural material is biaxially oriented polypropylene 18/aluminum 7/transparent PE140, and the gram weight before opening is 120g/m2The water vapor transmission amount (according to GB/T1037-224h), light-tight. Size after bagging: 70mm x 110mm, 18 circular holes with the diameter of 3mm are arranged on the bag, and the total opening area is 127mm2。
The stop seal layer adopts a composite aluminum film, and the structural material is biaxially oriented polypropylene 18/aluminum 7/transparent PE140, and the gram weight is 120g/m2The water vapor transmission (according to GB/T1037-1988, the temperature is 38 ℃ plus or minus 0.6 ℃, and the relative humidity is 90 percent plus or minus 2 percent) is less than or equal to 2 g/(m)224h), light-tight. Size after bagging: 80mm by 120 mm.
Example 3
A packaging structure for regulating and controlling the release rate of a bactericide comprises an activation slow-release layer, a protection controlled-release layer and a stop seal layer.
The activation slow-release layer adopts compound ventilated membrane, and the structure material is: polyester/polyethylene, grammage 50g/m2Water vapor transmission rate (according to YY/T0471.2-2014, temperature 37 ℃. + -. 1 ℃, relative humidity)<20%) are: 1800 g/(m)224h), white, opaque. The bag size is 50mm multiplied by 80 mm.
The protective controlled release layer adopts a film-covered paper bag with the gram weight of 300g/m before opening holes2And is opaque. Size after bagging: 70mm x 110mm, 18 circular holes with the diameter of 3mm are arranged on the bag, and the area of the holes is 226mm2。
The stop seal layer adopts a composite aluminum film, and the structural material is biaxially oriented polypropylene 18/aluminum 7/transparent PE140, and the gram weight is 120g/m2The water vapor transmission amount (according to GB/T1037-224h), light-tight. Size after bagging: 90mm by 130 mm.
Comparative example 1:
the solution of activating the sustained release layer and the terminating seal-inhibiting layer of example 1 were used without a protective controlled release layer.
Comparative example 2
The activating slow release layer with lower air permeability is adopted, and the structure material is as follows: polyester/polyethylene, gram weight 90g/m2Water vapor transmission rate (according to YY/T0471.2-2014, temperature 37 ℃. + -. 1 ℃, relative humidity)<20%) is 100 g/(m)224h), white, opaque. The bag size is 50mm multiplied by 80 mm.
No protective controlled release layer.
The seal was terminated as in example 1.
Rate of moisture absorption test
Because the absolute value of the release rate of the bactericide is difficult and complicated to test, the scheme adopts a simplified method for evaluation. Solid chlorine dioxide slow release agents are known to stimulate the reaction by absorbing water, so if the rate of moisture absorption can be controlled to be more even, the product chlorine dioxide release can also be more even.
The packaging structures of the examples 1 and 2 and the comparative examples 1 and 2 are used for containing polyacrylic acid water-absorbent resin, each bag contains 8g of samples, and the samples (except for the sealing stopping layer) are hung at adjacent positions in the same room, so that the temperature, the humidity and the airflow of the environment are consistent as much as possible. The results of the experiment are shown in FIG. 3.
From test result figure 3 shows, adopt the utility model discloses an activation slow-release layer adds the packaging structure who protects the controlled release layer, can alleviate the influence that factors such as air current caused the moisture absorption in the actual environment, makes the moisture absorption weight gain more steady.
Chlorine dioxide Release Rate test
The solid chlorine dioxide slow release agent prepared according to the invention CN200780005471.X is prepared by mixing sodium chlorite, citric acid, diatomite, water-absorbing resin and calcium chloride, and the appearance of the agent is powdery.
The packages of example 2, example 3 and comparative example 2 are respectively filled with solid chlorine dioxide sustained-release agents, and each package has a net weight of 8 g. They (with the seal-terminating layer removed) were hung in adjacent positions in the same room and their relative release rates of chlorine dioxide were compared using the method of the invention CN 201910357987.5. The results are shown in FIG. 4.
As can be seen from the test results in fig. 4, the packaging structures of example 2 and comparative example 2 have generally similar moisture absorption weight gain rates (as shown in fig. 3), and contain the same contents, and the chlorine dioxide release rates of example 2 and example 3 are more stable than comparative example 2.
Certainly, after the protective controlled release layer is added outside the activated slow release layer, the area directly contacting with the outside air is greatly reduced, and compared with the singly activated slow release layer, the moisture absorption weight gain is greatly reduced, which can be compensated by adopting the activated slow release layer with higher air permeability or increasing the opening area of the protective controlled release layer.
For the storage life of the product, when the product is stored under the condition of non-use, a termination sealing inhibiting layer is required to be added, the termination sealing inhibiting layer adopts a composite film with good barrier property, and the product can be effectively prevented from absorbing moisture and releasing in the storage process, for example, the packaging structure of the embodiment 1-3, the sample contained in the embodiment 1-3 hardly increases weight and does not have the phenomenon that the package is corroded under the natural storage, and the storage life of the product can be expected to be more than two years.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The above description is for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The packaging structure for regulating and controlling the release rate of the bactericide is characterized by comprising an activation slow-release layer and a protection controlled-release layer, wherein the activation slow-release layer wraps the solid-phase bactericide, and the activation slow-release layer is used for controlling the release rate of the bactericideThe protective controlled release layer is wrapped on the outer side of the activated slow release layer; the water vapor transmission rate of the activation slow release layer is 100-5000 g/(m)224 h); the protective controlled release layer is provided with at least one air hole.
2. A packaging structure for regulating the release rate of a biocide as in claim 1, wherein the grammage of said active slow release layer is 20-200g/m2。
3. A packaging structure for modulating the release rate of a biocide as in claim 2, wherein the active slow release layer is a composite film.
4. A packaging structure for regulating the release rate of a biocide as in claim 1, wherein the grammage of said protective controlled release layer is 50-2000g/m2。
5. A packaging structure for regulating a release rate of a bactericide as claimed in claim 1, wherein said pores have a pore size of 1 to 8 mm.
6. A packaging structure for regulating the release rate of a biocide as in claim 1, wherein the protective controlled release layer is made of an opaque material.
7. A packaging structure for regulating and controlling the release rate of a bactericide according to claim 6, wherein the protective controlled-release layer is made of one of cardboard, plastic composite film and composite aluminum film.
8. A packaging structure for regulating the release rate of a bactericide as claimed in claim 1, wherein said protective controlled-release layer is provided with hanging holes, hooks, hanging ropes, adhesive or suction cups.
9. A packaging structure for modulating the release rate of a biocide as in claim 1, further comprising a stop seal that will encapsulate the biocideThe bactericide of the active slow-release layer and the protective controlled-release layer is hermetically packaged, and the water vapor transmission rate of the termination sealing layer is less than or equal to 6 g/(m)2·24h)。
10. A packaging structure for modulating the release rate of a biocide as in claim 9, wherein the stop seal layer is a composite film comprising aluminum.
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