JP3195611U - Antiviral and antibacterial filing tools - Google Patents

Abstract

A filing tool for documents and the like more suitable for practical use is provided. SOLUTION: A first resin sheet and a second resin sheet which are stacked in a state of being connected to the first resin sheet and form a storage portion for storing a storage object between the first resin sheet and the first resin sheet. And at least one of the first resin sheet and the second resin sheet is laminated on the base layer and arranged to be in contact with the outside air, and a monovalent copper compound particle, and a cationic system A transparent antiviral / antibacterial sheet-like member having an antiviral / antibacterial layer containing a surfactant and having an average particle diameter of monovalent copper compound particles of 1 nm or more and 300 nm or less, The present invention relates to a filing tool in which particles of a valence copper compound are contained in an amount of 0.5 to 20% by mass per antiviral / antibacterial layer, and the antiviral / antibacterial layer has a thickness of 5 to 30 μm. [Selection] Figure 1

Description

  The present invention relates to an antiviral / antibacterial filing tool. In particular, antiviral and antibacterial properties, including monovalent copper compound particles that can inactivate various attached viruses and fungi, regardless of the presence or absence of envelopes as antiviral and antibacterial agents, and in the presence of lipids and proteins It relates to filing tools.

  In recent years, deaths due to viral infections such as SARS (Severe Acute Respiratory Syndrome), Norovirus and avian influenza have been reported. Furthermore, we are currently facing a “pandemic” crisis that spreads around the world due to traffic development and virus mutation. In addition, major damage from new influenza and foot-and-mouth disease has emerged, and urgent measures are urgently needed. In order to cope with such a situation, development of antiviral agents using vaccines is urgently needed. However, in the case of vaccines, infection can be prevented only by specific viruses due to its specificity.

  In hospitals and clinics, nosocomial infections have become a major social issue. Causes of nosocomial infections include MRSA (methicillin-resistant Staphylococcus aureus) brought to the hospital by carriers or infected persons, and strains that have been mutated from Staphylococcus aureus to MRSA by administration of antibiotics, causing pathogens and direct infection from patients One case is mentioned. In addition, viruses and fungi can infect other patients and healthcare workers through clothing worn by healthcare workers, filing tools for carrying documents in the hospital, and packaging bags for medical devices. There is also a case. In addition, even in a kitchen, a food facility, a food factory, etc., an operator may work without noticing infection and may be infected with a virus, a bacterium, or the like through an article used. Therefore, there is a strong demand for the development of tools that can exhibit antiviral and antibacterial effects that are effective against various viruses and bacteria.

  In order to solve these problems, in Patent Document 1, a quaternary ammonium group as an iodine adsorption site and an N-alkylamide group as an iodine sustained release site are introduced as side chains into the substrate, and iodine is further added. Bactericidal materials have been proposed in which the sustained release of iodine is controlled by fixing to the side chain. Patent Document 2 proposes a fiber containing an antiviral substance, a fiber structure using an antiviral fiber, and the like.

JP 2008-307253 A Japanese Patent No. 4584339

  In addition to hospitals and the like, filing tools for storing documents are known as one of tools used in various situations. Among these, what is comprised using the sheet-like resin material (resin sheet) which has transparency is also called a clear folder. However, when the technique described in Patent Document 1 is applied to the resin sheet constituting the clear folder and iodine or the like is fixed to impart bactericidal properties, the sheet may be colored yellow, or the inactivation effect against viruses There is a problem such as not.

  Further, although the antiviral fiber structure of Patent Document 2 can be applied to a fibrous fabric or the like, it is unclear whether it can be applied to a film, sheet, or molded body that does not use fibers.

  The present invention has been made to solve such a conventional problem, and an object thereof is to provide a novel antiviral / antibacterial filing tool suitable for practical use.

The inventor first conceived of containing monovalent copper compound particles that act as an antiviral / antibacterial agent in a filing tool (clear folder) that has permeability and is made of a sheet-like resin material. The inventor also conceived to increase the value when using the clear folder by making the anti-virus and antibacterial properties based on the monovalent copper compound particles more effective in the clear folder. . The inventor has found that the antiviral and antibacterial properties can be exhibited more efficiently by including in the resin material a cationic surfactant that acts as a surface potential control agent together with monovalent copper compound particles. . On the other hand, the resin sheet containing monovalent copper compound particles in the resin has low permeability, and when the clear folder is configured, the visibility of the contents in the folder is worse than that of a normal resin sheet. Not practical.
As a result of diligent research, the inventor found a configuration capable of enhancing the permeability of the antiviral / antibacterial layer and completed the present invention.

The gist of the present invention is as follows.
[1]
A first sheet-like member;
At least a second sheet-like member that overlaps with the first sheet-like member in a state where at least a part thereof is connected and forms a storage portion that stores a storage object with the first sheet-like member; Prepared,
At least one of the first sheet-like member and the second sheet-like member is disposed so as to be laminated to the base layer and to be in contact with the outside air. At least one monovalent copper compound particle that acts as a virus / antibacterial agent, and a cationic surfactant that acts as a surface potential control agent that changes the potential of the resin in the positive direction on the surface of the antiviral / antibacterial layer A transparent antiviral / antibacterial sheet-like member having at least an antiviral / antibacterial layer containing
The average particle size of the monovalent copper compound particles is 1 nm or more and 300 nm or less,
The monovalent copper compound particles are contained in an amount of 0.5 to 20% by mass per antiviral / antibacterial layer,
A filing tool having a thickness in the stacking direction of the antiviral / antimicrobial layer of 5 μm or more and 30 μm or less.

  According to the present invention, a novel antiviral / antibacterial filing tool suitable for practical use can be provided.

It is a perspective view of the filing tool of this embodiment. It is a perspective view of the filing tool of this embodiment. It is a schematic diagram of the antiviral and antimicrobial clear sheet which concerns on this embodiment.

The present embodiment relates to a filing tool and can be used to store, for example, documents.
The filing tool of the present embodiment is stacked with the first sheet-like member and the first sheet-like member being overlapped with at least a part of the first sheet-like member, and storing the stored item between the first sheet-like member. At least a second sheet-like member that forms the part.
In addition, at least one of the first sheet-like member and the second sheet-like member is disposed so as to be in contact with the outside air, the base layer including the resin, and the base layer including the resin.・ Containing at least one monovalent copper compound particle that acts as an antibacterial agent, and a cationic surfactant that acts as a surface potential control agent that changes the potential of the resin on the antiviral / antibacterial layer surface in the positive direction It has at least an antiviral / antibacterial layer.
In the present specification, the connection of the first and second sheet-like members means that the first and second sheet-like members 101 only need to be connected. Therefore, the connection includes, for example, the case where two sheets corresponding to the first and second sheet-like members are connected by welding or the like, and the first and second sheet-like members by bending one sheet. It is a concept including the case where it comprises. Moreover, the 1st and 2nd sheet-like member may be connected with the instrument etc., and the 1st and 2nd sheet-like member does not need to contact at this time.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the drawings.
FIG. 1 is a perspective view of a filing tool 100 according to the present embodiment.
The filing tool 100 of the present embodiment includes a sheet-like member 101 that is rectangular in a front view with respect to the largest surface, and a sheet-like member 103 that is also rectangular in a front view with respect to the largest surface and is superimposed on the sheet 1. It consists of The sizes of the sheet-like member 101 and the sheet-like member 103 are not particularly limited, and can be appropriately set by those skilled in the art.
In the present embodiment, the sheet-like members 101 and 103 are connected to each other at the end sides 105 and 107 included in a laminate formed by superimposing them.
The filing tool 100 according to the present embodiment is configured to store a storage object such as a document between the stacked sheet-like members 101 and 103. In this embodiment, the storage unit is formed by the sheet-like members 101 and 103. Is formed.
For example, the user picks up at least one of the sheet-like members 101 and 103, widens the distance between the sheet-like members 101 and 103 in the unconnected portion as shown in FIG. 2, and forms a gap. Then, the stored item is stored in the gap. That is, the clearance corresponds to the storage portion, and the stored item is sandwiched between the sheet-like members 101 and 103, for example, or connected between the sheet-like members 101 and 103. Occlusion is suppressed by at least one of the end edges 105 and 107, and is stored in the storage portion.

Next, the antiviral / antibacterial sheet having permeability that constitutes the sheet-like members 101 and 103 according to the present embodiment will be described. Hereinafter, the antiviral / antibacterial sheet having the permeability is also referred to as an antiviral / antibacterial clear sheet.
FIG. 3 is a diagram schematically showing a part of a cross section of the antiviral / antibacterial clear sheet 1 according to the present embodiment. The antiviral / antibacterial clear sheet 1 includes a base layer 20 and a laminate of two or more sheets having an antiviral / antibacterial layer 10 stacked on the base layer 20 and disposed so as to be in contact with the outside air. Have a body. For example, the antiviral / antibacterial layer 10 is disposed at at least one end in the stacking direction of the base layer 20 and the antiviral / antibacterial layer 10 and is in contact with the outside air on the surface orthogonal to the above-described stacking direction.

  The antiviral / antibacterial layer 10 comprises a sheet-like base material containing a resin, at least one kind of monovalent copper compound particles 11 as an antiviral / antibacterial agent, and a surface potential control agent (cation). System surfactant) 12.

  The resin used for the antiviral / antibacterial layer 10 of the present embodiment is not particularly limited. For example, polyethylene resin, polypropylene resin, polystyrene resin, ABS resin, AS resin, EVA resin, polymethylpentene resin, polyvinyl chloride. Thermoplastic resins such as resin, polyvinylidene chloride resin, polymethyl acrylate resin, polyvinyl acetate resin, polyamide resin, polyimide resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyacetal resin, polyarylate resin, polysulfone resin Silicone resins, polystyrene elastomers and other styrene elastomers, polyethylene elastomers, polypropylene elastomers and other olefin elastomers, and polyurethane elastomers. Polyurethane elastomers, vinyl chloride elastomers include thermoplastic elastomers such as polyester elastomer, nylon-based elastomer.

The monovalent copper compound particles 11 acting as an antiviral / antibacterial agent in the present embodiment are not particularly limited, but from the viewpoint of antiviral and antibacterial properties, chloride, acetic acid compound, sulfide, iodide, bromide, excess It is preferable to use an oxide, an oxide, or a thiocyanide. Further, as the monovalent copper compound particles 11 acting as an antiviral / antibacterial agent in this embodiment, CuCl, Cu (CH ₃ COO), More preferably, it is a particle of a compound selected from at least one selected from the group consisting of CuBr, CuI, CuSCN, Cu ₂ S and Cu ₂ O.

  In particular, in this embodiment, the monovalent copper compound particles 11 are particles of a compound selected from the group consisting of CuI, CuCl, CuBr, and CuSCN, which are excellent in storage stability in air. Is more preferred.

  The mechanism of virus inactivation by monovalent copper compounds, which are antiviral and antibacterial agents, is not necessarily clear at present, but monovalent copper compounds that are fixed and exposed in the antiviral and antibacterial layer are viruses. When it comes into contact with bacterium or bacteria, some of them cause oxidation-reduction reaction or generate active species, thereby damaging the membrane protein, DNA, RNA, etc. on the virus surface attached to the filing tool of this embodiment, It is thought to inactivate.

  The virus that can be inactivated by the monovalent copper compound particles 11 according to the present embodiment is not particularly limited, and various viruses can be inactivated without depending on the type of genome or the presence or absence of an envelope. . For example, rhinovirus, poliovirus, rotavirus, foot-and-mouth disease virus, norovirus, enterovirus, hepatovirus, astrovirus, sapovirus, hepatitis E virus, type A, type B, type C influenza virus, parainfluenza virus, mumps virus (mumps) ) · Measles virus · Human metapneumo virus · RS virus · Nipah virus · Hendra virus · Yellow fever virus · Dengue virus · Japanese encephalitis virus · West Nile virus · Type B, hepatitis C virus · Eastern and western equine encephalitis virus · Onion Nyon virus, rubella virus, Lassa virus, Funin virus, Machupo virus, Guanarito virus, Sabia virus, Crimea congo hemorrhagic fever virus, snubber fever, hantavirus, shi Nombre virus, rabies virus, Ebola virus, Marburg virus, bat lyssa virus, human T cell leukemia virus, human immunodeficiency virus, human coronavirus, SARS coronavirus, human porvovirus, polyomavirus, human papillomavirus, adenovirus Examples include herpes virus, chickenpox, zoster virus, EB virus, cytomegalovirus, smallpox virus, monkeypox virus, cowpox virus, molasipox virus, parapox virus, and the like.

  In addition, bacteria that can be inactivated by a monovalent copper compound are not particularly limited, and various bacteria can be inactivated regardless of properties such as gram positive, negative, aerobic, and anaerobic. Examples include Escherichia coli, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pneumoniae, Haemophilus influenzae, Bordetella pertussis, Enterococcus pneumoniae, Klebsiella pneumoniae, Pseudomonas aeruginosa, Vibrio, Pseudomonas aeruginosa, MRSA, Bacillus cereus, Klebsiella pneumoniae Such as bacteria and mold.

  In the present embodiment, the size of the monovalent copper compound particles 11 is not particularly limited, and can be appropriately set by those skilled in the art. However, from the viewpoint of suppressing a decrease in the transparency of the clear sheet 1, it is 300 nm or less. Preferably 200 nm or less, more preferably 150 nm or less, and even more preferably 120 nm or less. Further, the present embodiment is not particularly limited and can be appropriately set by those skilled in the art. However, the size of the monovalent copper compound particles 11 should be 1 nm or more in terms of particle production, handling, and chemistry. From the viewpoint of mechanical stability. In addition, in this specification, an average particle diameter means a volume average particle diameter.

  In the present embodiment, the content of the monovalent copper compound particles 11 is not particularly limited and can be appropriately set by those skilled in the art. However, the content of the antiviral / antibacterial layer 10 is 0.5% by mass or more and 20% by mass. The range of mass% or less is preferable and the range of 1 mass% or more and 20 mass% or less is more preferable. The antiviral / antibacterial property of the filing tool 100 of the present embodiment is lower than the case where the amount is less than 0.5% by mass compared to the case where the amount is within the range. As a result, the transparency of the clear sheet 1 decreases.

In this embodiment, the antiviral / antibacterial layer 10 contains a monovalent copper compound particle 11 and a cationic surfactant 12 that acts as a surface potential control agent.
Here, in the present specification, the surface potential control agent refers to a substance that can be controlled in the positive direction by being contained in the resin, as compared with the case of the resin alone.

  The surface potential of the resin that is the base material of the antiviral / antibacterial layer 10 according to the present embodiment is generally negative, and the surface potential of the virus is negative regardless of the type of genome or the presence or absence of the envelope. is there. Therefore, by containing the surface potential control agent 12 in the antiviral / antibacterial layer 10, the virus can be antiviral / antibacterial by controlling the surface potential of the resin constituting the antiviral / antibacterial layer 10 in the plus direction. It becomes easy to adsorb to the layer 10. As a result, the antiviral and antibacterial effects of the monovalent copper compound particles 11 can be efficiently expressed.

  Examples of the cationic surfactant 12 acting as a surface potential control agent in the present embodiment include tetraalkyl (4 to 100 carbon atoms (hereinafter, the carbon number is also referred to as Cn (n is a positive integer))). Ammonium salts (eg lauryltrimethylammonium chloride, didecyldimethylammonium chloride, dioctyldimethylammonium bromide and stearyltrimethylammonium bromide), trialkyl (C3-80) benzylammonium salts (eg lauryldimethylbenzylammonium chloride), alkyl (C2-60) ) Pyridinium salts (eg cetylpyridinium chloride), polyoxyalkylene (C2-4) trialkylammonium salts (eg polyoxyethylenetrimethylammonium chloride) ), Quaternary ammonium salt types such as sapamine type quaternary ammonium salts (eg stearamide ethyl diethyl methyl ammonium methosulfate) and higher aliphatic amines (C12-60, eg laurylamine, stearylamine, cetylamine, cured beef tallow Amines and rosinamines) inorganic acids (eg hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid) or organic acids (C2-22, eg acetic acid, propionic acid, lauric acid, oleic acid, benzoic acid, succinic acid, adipic acid and azelaic acid ) Salts, inorganic acids (eg hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid) such as EO adducts of aliphatic amines (C1-30) or organic acids (C2-22, eg acetic acid, propionic acid, lauric acid, oleic acid) , Benzoic acid, succinic acid, adipic acid and azelaic acid) salts and tertiary amino acids Inorganic acids (e.g. hydrochloric acid, sulfuric acid, nitric acid and phosphoric acid) salts or organic acids (e.g. C2-22, e.g. acetic acid, propionic acid, C3-30, e.g. triethanolamine monostearate and stearamide ethyl diethylmethylethanolamine), Examples thereof include amine salt types such as lauric acid, oleic acid, benzoic acid, succinic acid, adipic acid and azelaic acid).

  In this embodiment, the state and shape of the cationic surfactant 12 are not particularly limited, and can be appropriately set by those skilled in the art.

  In the present embodiment, the content of the cationic surfactant 12 is not particularly limited and can be appropriately set by those skilled in the art, but is 0.01% by mass to 5.0% by mass with respect to the entire antiviral / antibacterial layer. % Range is preferred. When it is less than 0.01% by mass, it becomes difficult for viruses and bacteria to be adsorbed to the antiviral / antibacterial layer 10 as compared with the case where it is within the range. Out.

  In addition, in this embodiment, the antiviral / antibacterial layer 10 has an arbitrary function for imparting a desired function to the antiviral / antibacterial layer 10 in addition to the antiviral / antibacterial agent 11 and the surface potential control agent 12. May contain a sex material. The functional materials include other antiviral agents, antibacterial agents, antifungal agents, scratch prevention agents, color pigments, antiallergen agents, plasticizers, desiccants, curing agents, antiskinning agents, leveling agents, sauces, etc. Examples thereof include an inhibitor, a heat ray absorbent, a lubricant, a surfactant, a dispersant, a thickener, a viscosity modifier, a stabilizer, a drying modifier, an ultraviolet absorber, an antireflection material and a catalyst.

  In the present embodiment, the thickness of the antiviral / antibacterial layer 10 in the stacking direction of the base layer 20 and the antiviral / antibacterial layer 10 can be appropriately set and is not particularly limited, but is preferably 5 μm or more and 30 μm or less. This is because when the thickness exceeds 30 μm, the permeability of the antiviral / antibacterial clear sheet 1 is reduced as compared with the case where the thickness is within the range. On the other hand, when the thickness is less than 5 μm, it becomes difficult to make the thickness of the clear sheet 1 uniform, and the antiviral and antibacterial properties are not uniform.

  Next, the base layer 20 on which the antiviral / antibacterial layer 10 is laminated will be described. The resin for the base layer 20 is not particularly limited as long as a permeable base layer can be formed.

  Examples of the resin used for the base layer 20 according to the present embodiment include a polyethylene resin, a polypropylene resin, a polystyrene resin, an ABS resin, an AS resin, an EVA resin, a polymethylpentene resin, a polyvinyl chloride resin, and a polyvinylidene chloride resin. Polymethyl methacrylate resin, polyvinyl acetate resin, polyamide resin, polyimide resin, polycarbonate resin, polyethylene terephthalate resin, polybutylene terephthalate resin, polyacetal resin, polyarylate resin, thermoplastic resin such as polysulfone resin, silicone resin, polystyrene elastomer, etc. Styrene elastomer, polyethylene elastomer, olefin elastomer such as polypropylene elastomer, polyurethane elastomer such as polyurethane elastomer Chromatography, vinyl chloride elastomers include thermoplastic elastomers such as polyester elastomer, nylon-based elastomer.

  Further, the base layer 20 of the present embodiment may contain a functional substance or the like. For example, as a functional substance, other antiviral agents, antibacterial agents, antifungal agents, antiallergen agents, plasticizers, drying agents, curing agents, anti-skinning agents, leveling agents, anti-sagging agents, heat ray absorbing agents, Lubricants, surfactants, dispersants, thickeners, viscosity modifiers, stabilizers, drying regulators, pigments, ultraviolet absorbers, catalysts, and antireflection materials are included.

  The thickness of the base layer 20 of the present embodiment and the antiviral / antibacterial layer 10 in the stacking direction is the resin used for the base layer 20, the size of the filing tool 100, the size of the expected storage item, and the like. Can be appropriately changed according to the above, and is not particularly limited.

The antiviral / antibacterial clear sheet 1 of this embodiment is configured by laminating two or more layers including an antiviral / antibacterial layer 10 and a base layer 20. For example, the antiviral / antibacterial layer 10 includes a base layer. 20 and the antiviral / antibacterial layer 10 are arranged at at least one end in the laminating direction, and are in contact with the outside air on the surface perpendicular to the laminating direction. In this embodiment, in the stacking direction of the antiviral / antibacterial layer 10 and the base layer 20, there are two outer surfaces (edges) on which the antiviral / antibacterial clear sheet 1 is directly exposed to the outside air, The antiviral / antibacterial layer 10 can be arranged so as to be in contact with the outside air on at least one of its outer surfaces. Further, when the antiviral / antibacterial layer 10 is disposed on one of the two outer surfaces described above, in the filing tool 100, the outer surface is different from the surface outside the filing tool (the surface forming the storage portion). Surface).
Further, the antiviral / antibacterial layer 10 may be arranged on both of the two outer surfaces, and the antiviral / antibacterial effect becomes higher.
In the present embodiment, the antiviral / antibacterial layer 10 is laminated on the base layer 20, so that the antiviral / antibacterial clear sheet 1 is an antiviral / antibacterial agent even when the thickness of the antiviral / antibacterial clear sheet 1 is increased. The clear sheet 1 can be configured without having to increase the content of the monovalent copper compound. Further, by providing the base layer 20, it is possible to configure the clear sheet 1 while suppressing a decrease in strength of the entire clear sheet 1, and as a result, it is possible to increase the strength of the filing tool 100.

  In addition to the antiviral / antibacterial layer 10 and the base layer 20, other layers may be laminated on the antiviral / antibacterial clear sheet 1 of the present embodiment. For example, the other layer may be a layer having a predetermined action. Specifically, antibacterial agents, antifungal agents, antiallergen agents, plasticizers, desiccants, curing agents, anti-skinning agents, leveling agents, anti-sagging agents, heat ray absorbers, lubricants, surfactants, potentiators One or more layers containing one type of these functional agents, such as a sticking agent, a viscosity adjusting agent, a stabilizer, a drying adjusting agent pigment, an ultraviolet absorber, a catalyst, or an antireflection material, or a layer containing two or more types of functional agents One or more layers may be provided.

  Subsequently, an example of a method for producing the antiviral / antibacterial clear sheet 1 according to the present embodiment will be described more specifically.

  As a rational and inexpensive manufacturing method for the antiviral / antibacterial layer 10, a master batch pellet of resin pellets containing a high concentration of antiviral / antibacterial agent (monovalent copper compound particles 11) is manufactured in advance. The anti-virus / anti-bacterial layer 10 is manufactured by mixing the pellets with the surface potential control agent and the resin pellets at a certain ratio and further melt-kneading them.

  First, a monovalent copper compound is pulverized into, for example, nano-order particles by a jet mill, a hammer mill, a ball mill, a vibration mill, a bead mill or the like. It does not specifically limit regarding a grinding | pulverization method, Both dry type and wet type can be utilized.

  As a method for producing a master batch pellet, first, monovalent copper compound particles 11 obtained by pulverization are mixed with commercially available resin pellets. Next, the obtained mixture is subjected to a kneading extruder to uniformly contain monovalent copper compound particles 11 inside the resin. The obtained kneaded product is cooled and then finely cut using a pelletizer to obtain a master batch pellet containing monovalent copper compound particles 11 at a high concentration.

  Next, the master batch pellet containing the monovalent copper compound particles 11 in a high concentration is mixed with the surface potential control agent 12 and the same resin pellet as the resin pellets, and the monovalent copper compound particles 11 are in a predetermined ratio. Mix to become. The obtained pellets are melt-kneaded, and the antiviral / antibacterial layer 10 in which the monovalent copper compound particles 11 and the cationic surfactant 12 are uniformly dispersed in the resin by a T-die method, an inflation method, a calender method, or the like. Sheet can be obtained.

  In addition, the master batch which contains the monovalent | monohydric copper compound particle | grains 11 and the cationic surfactant 12 in the step which produces a masterbatch pellet adds the cationic surfactant 12 with the particle | grains 11 of the monovalent | monohydric copper compound. Pellets may be obtained.

  For the base layer 20, resin pellets used for the base layer 20 may be used. In the case of coloring, base layer resin pellets containing a colorant such as a pigment are produced in advance, and the base layer 20 sheet may be obtained by the same method as the antiviral / antibacterial layer 10 sheet.

  Subsequently, the base layer 20 and the antiviral / antibacterial layer 10 are arranged and laminated so that the antiviral / antibacterial layer 10 is in contact with the outside air, thereby obtaining the antiviral / antibacterial clear sheet 1 of the present embodiment. A method for laminating the antiviral / antibacterial layer 10 and the base layer 20 is not particularly limited, but the antiviral / antibacterial layer 10 and the base layer 20 can be laminated by a method such as a laminating method or a coextrusion method.

In producing the filing tool 100 of the present embodiment, a sheet of a predetermined length of the obtained antiviral / antibacterial clear sheet 1 is punched out and folded in half from the middle to obtain sheet-like members 101 and 103. Can be obtained. Furthermore, at least one side other than the bent side may be welded. In FIG. 1 and FIG. 2, the end side 105 corresponds to the bent side and the side where the end side 107 is welded.
The filing tool 100 may be manufactured by other methods. For example, two antiviral / antibacterial clear sheets 1 of the same size are arranged and laminated so that each antiviral / antibacterial layer 10 is in contact with the outside air, and a gap between the sheets 101 and 103 serving as a storage portion is formed. The filing tool 100 may be obtained by welding a portion other than the portion that forms the opening of the gap when spread.

As described above, according to the filing tool of the present embodiment, it is possible to improve the visibility from the outside of the stored item when configured using a sheet-like member including an antiviral / antibacterial layer including particles of a monovalent copper compound. Can do. For example, although it depends on the configuration of the base layer in the clear sheet 1 and the configuration of the entire filing tool 100, the total light transmittance can be 60% or more.
In addition, this invention is not limited to embodiment described above, Of course, it can also be set as another form.
For example, although the example which comprises both the sheet-like members 101 and 103 using the antiviral / antibacterial clear sheet 1 has been described, one of the sheet-like members 101 and 103 uses the antiviral / antibacterial clear sheet 1. You may make it comprise.
Further, the shape of the sheet-like members 101 and 103 is not limited to a rectangle, and can be changed as appropriate.
Further, the connection location of the sheet-like member 101 is not particularly limited. Therefore, those skilled in the art can appropriately set the size of the opening of the storage unit in consideration of the size of the stored item and the like.
Further, the method for connecting the sheet-like members 101 and 103 is not particularly limited.
Further, in the above description, the case where the stored item is accommodated in the storage unit by being prevented from falling off by the end sides 105 and 107 is described as an example, but the storage unit may have other forms. . For example, the sheet-like members 101 and 103 that overlap each other and the stored item disposed therebetween may be sandwiched by a fixing tool, and the stored item may be fixed in the storage unit.
Furthermore, the sheet-like members 101 and 103 need only overlap with each other to form a storage portion therebetween, and may not overlap completely. For example, a recess may be formed on one side of the sheet-like members 101 and 103 where one opening is formed. Thereby, it becomes easy to expand the accommodating part between the sheet-like members 101 and 103.
Furthermore, the filing tool 100 according to the present embodiment may have a configuration in which a partition or the like is provided in a storage portion formed by the sheet-like members 101 and 103. Or the form provided in the surface which contact | connects outside air with the pocket which can accommodate a card | curd etc., and the form which provided the tag which extended a part of sheet | seat may be sufficient. Furthermore, the form of the envelope which provided the cover so that what was accommodated from the opening part may not leak may be sufficient.
The filing tool having antiviral / antibacterial properties of this embodiment can be used in various situations. For example, although not particularly limited, facilities that may be infected by bacteria or viruses, such as hospitals and nursing care facilities, can be mentioned.

  Next, an example is given and the present invention is explained more concretely. However, the present invention is not limited to these examples.

(Preparation of antiviral filing tools)
Example 1
Copper iodide fine particles obtained by pulverizing a commercially available copper (I) iodide powder (manufactured by Nippon Chemical Industry Co., Ltd.) to a mean particle size of 150 nm by dry pulverization were obtained.

  Prepared by adding polyethylene (PE) resin pellets (manufactured by Asahi Kasei Chemicals Co., Ltd.) as a base resin so that the obtained copper iodide is 42% by mass, and supplies it to a biaxial melt kneader, master batch pellets Got.

  Polyethylene resin pellets, masterbatch pellets, cations so that the functional layer (antiviral / antibacterial layer) contains 10% by weight of copper iodide and 0.2% by weight of cationic surfactant (Leonics HT Flakes, manufactured by Lion Corporation) A system surfactant was mixed, and a two-layer sheet was obtained by a coextrusion method using polypropylene resin pellets (manufactured by Nippon Polypro Co., Ltd.) as a base layer. At this time, the functional layer had a thickness of 10 μm and the base layer had a thickness of 200 μm. Further, the filing tool of Example 1 was obtained by punching out to a predetermined size, folding it in half from the center, and welding one side next to the folded side.

(Example 2)
A filing tool of Example 2 was obtained under the same conditions as in Example 1 except that pulverized copper iodide fine particles having an average particle diameter of 280 nm were used.

Example 3
A filing tool of Example 3 was obtained under the same conditions as in Example 1 except that the functional layer of copper iodide was mixed at 1% by mass.

Example 4
A filing tool of Example 4 was obtained under the same conditions as in Example 1 except that polypropylene resin pellets were used as the base resin for the functional layer.

(Example 5)
A filing tool of Example 5 was obtained under the same conditions as in Example 4 except that the functional layer was mixed with 1% by mass of copper iodide.

(Example 6)
A filing tool of Example 6 was obtained under the same conditions as in Example 1 except that the functional layer was mixed with copper iodide at 20% by mass.

(Comparative Example 1)
In Example 1, the filing tool of Comparative Example 1 was obtained under the same conditions as Example 1 except that the thickness of the functional layer was 210 μm and the base layer was not provided.

(Comparative Example 2)
A filing tool of Comparative Example 2 was obtained under the same conditions as in Example 1 except that pulverized copper iodide fine particles having an average particle diameter of 400 nm were used.

(Example 7)
A filing tool of Example 7 was obtained under the same conditions as in Example 1 except that the functional layer copper iodide was mixed at 0.5 mass%.

(Comparative Example 3)
A filing tool of Comparative Example 3 was obtained under the same conditions as in Example 1 except that the functional layer copper iodide was mixed at 25% by mass.

(Comparative Example 4)
A filing tool of Comparative Example 4 was obtained under the same conditions as in Example 1 except that the thickness of the functional layer was 40 μm.

(Example 8)
In the functional layer (antiviral / antibacterial layer), the filing tool of Example 8 was obtained under the same conditions as in Example 1 except that a cationic surfactant (Lion Corporation, Lipocard 22-80) was used. It was.

Example 9
A filing tool of Example 9 was obtained under the same conditions as in Example 1 except that copper iodide fine particles having an average particle diameter of 120 nm were used in the functional layer (antiviral / antibacterial layer).

(Example 10)
A filing tool of Example 10 was obtained under the same conditions as in Example 1 except that copper iodide fine particles having an average particle diameter of 100 nm were used in the functional layer (antiviral / antibacterial layer).

  Table 1 shows the configurations of the sheets used for manufacturing the filing tools of Examples 1 to 10 and Comparative Examples 1 to 4 described above.

(Antiviral evaluation method)
The virus inactivation of the filing tool is measured using the influenza virus cultured with MDCK cells (influenza A / Kitakyushu / 159/93 (H3N2)) as the enveloped virus, and the norovirus as the virus without the envelope. The feline calicivirus which is generally used as a substitute virus for the above was used.

The filing tools (50 mm × 50 mm) of Examples and Comparative Examples were attached so that the plastic petri dish was flat, and 100 μL of virus solution diluted with PBS was dropped and allowed to act at room temperature for 15 minutes. At this time, by covering the upper surface of the filing tool test article with a PET film (40 mm × 40 mm), the test was performed with a constant contact area between the virus solution and the test article. After acting for 15 minutes, 1.9 mL of SCDLP medium was added to stop the reaction, and the virus was washed out by pipetting. Then, it diluted with the MEM dilution liquid until the virus liquid after each reaction became 10 ^{< -1} > ^-10 < ^-5 > (10-fold serial dilution), and created the sample liquid. 100 μL of the sample solution was inoculated on MDCK cells cultured in a petri dish. Allow to stand in a 34 ° C, 5% CO ₂ incubator for 60 minutes, adsorb the virus to the cells, overlay with 0.7% agar medium, culture for 48 hours in 34 ° C, 5% CO ₂ incubator, and formalin The number of plaques formed by fixation and methylene blue staining was counted, and the virus infectivity (PFU / 0.1 mL, Log 10); (PFU: plaque-forming units) was calculated.

(Bactericidal evaluation method)
The bactericidal property of the sheet was measured using Staphylococcus aureus cultured in NB medium as Gram-positive bacteria and Escherichia coli cultured in NB medium as Gram-negative bacteria.

Bacteria diluted with 1/500 NB medium until the filing tool (50 mm x 50 mm) of the example and comparative example was pasted so that the plastic petri dish was flat and the number of bacteria reached 2.5 x 10 ⁵ to 10 x 10 ⁶ 100 μL of the solution was added dropwise and allowed to act at room temperature for 60 minutes. At this time, by covering the upper surface of the test product of the filing tool with a PET film (40 mm × 40 mm), the contact area between the bacterial solution and the test product was made constant and the test was performed. After acting for 60 minutes, 10 mL of SCDLP medium was added to stop the reaction, and the bacteria were washed out by pipetting. Then, it diluted with the SCDLP liquid until the bacterial solution after each reaction became 10 < ^-1 > -10 < ^-5 > (10-fold serial dilution), and created the sample liquid. Dispense 1 mL of sample solution into a petri dish, add 1.5% agar medium, and mix. The inverted petri dish was cultured in an incubator at 37 ° C. for 24 to 48 hours, and the number of colonies was counted to calculate the number of viable bacteria (CFU / 0.1 mL, Log 10); (CFU: colony-forming units).

(Transmittance evaluation method)
The total light transmittance of the filing tools of Examples and Comparative Examples was measured using a turbidimeter NDH2000 (manufactured by Nippon Denshoku Industries Co., Ltd.).

  Table 2 summarizes the measurement results of the filing tools of Examples 1 to 10 and Comparative Examples 1 to 4 described above.

  From Table 2, the total light transmittance is about 50% in Comparative Example 1 manufactured using a sheet composed only of the antiviral / antibacterial layer, and the total light transmittance is also in Comparative Examples 2 to 4. 53-59%. On the other hand, in the examples, the total light transmittance was improved as compared with the comparative examples, and all were 60% or more.

1: Antiviral / antibacterial clear sheet 10: Antiviral / antibacterial layer 11: Antiviral / antibacterial agent (particles of monovalent copper compound)
12: Surface potential control agent (cationic surfactant)
20: Base layer 100: Filing tool 101, 103: Sheet-like member 105, 107: End side

Claims (1)

A first sheet-like member;
At least a second sheet-like member that overlaps with the first sheet-like member in a state where at least a part thereof is connected and forms a storage portion that stores a storage object with the first sheet-like member; Prepared,
At least one of the first sheet-like member and the second sheet-like member is disposed so as to be laminated to the base layer and to be in contact with the outside air. At least one monovalent copper compound particle that acts as a virus / antibacterial agent, and a cationic surfactant that acts as a surface potential control agent that changes the potential of the resin in the positive direction on the surface of the antiviral / antibacterial layer A transparent antiviral / antibacterial sheet-like member having at least an antiviral / antibacterial layer containing
The average particle size of the monovalent copper compound particles is 1 nm or more and 300 nm or less,
The monovalent copper compound particles are contained in an amount of 0.5 to 20% by mass per antiviral / antibacterial layer,
A filing tool having a thickness in the stacking direction of the antiviral / antimicrobial layer of 5 μm or more and 30 μm or less.