JP5699368B2 - Moisture-permeable packaging material, moisture-permeable packaging bag, and moisture-permeable packaging body - Google Patents

Description

  The present invention relates to a moisture-permeable packaging material, a moisture-permeable packaging bag, and a moisture-permeable packaging body. In particular, the contents themselves even when packaging contents such as solid foods, beverages, pharmaceuticals, and cosmetics containing moisture Moisture permeable packaging material, moisture permeable packaging bag, and permeable packaging that allow excess water vapor to be released to the outside without condensation on the inner surface of the film due to water vapor evaporated from It relates to a wet package.

  Conventionally, in order to fill and package various articles, plastic packaging materials, paper substrates, metal foils, and the like are used, and various packaging materials formed by arbitrarily laminating them are used.

  And, these packaging materials usually have a sealant layer in the innermost layer, the sealant layers are opposed to each other, and the surrounding portions are heat-sealed to produce various types of packaging bags. Is done. And various contents, such as food-drinks, a pharmaceutical, cosmetics, a detergent, a chemical, miscellaneous goods, etc., are filled and packaged from the opening part of the said packaging bag.

  In particular, in the field of packaging culture media for microorganisms, plants, etc., petri dishes in which sterile agar media are dispensed in an aseptic state are usually stored and sealed in plastic bags. The above-mentioned commercially available plastic bag is usually composed of a laminated film in which a biaxially stretched polypropylene film as a base film is used and the base film and an unstretched polypropylene film as a sealant layer are bonded together. ing. For example, as a conventional packaging bag for culture medium, a plastic bag using a laminated film of stretched polypropylene and polyethylene is disclosed (for example, see Patent Document 1).

  In the field of packaging fruits and vegetables, for example, fruits and vegetables are individually wrapped in a packaging bag made of a film and sealed. In this case, water vapor evaporated from the fruits and vegetables themselves cannot be sufficiently released to the outside, causing condensation on the inner surface of the bag, and if stored as it is for a long time, it will damage the part of the packaging bag. There was a problem that.

  In addition, even when processed meat products such as wiener sausages and hams, and fishery products such as fried fish, chikuwa, and sea bream, if they are packaged in ordinary plastic film bags, the bag will be submerged due to condensation of water vapor from the contents or water separation. This creates an environment in which yeast and bacteria can easily propagate, and even though it is originally a preserved food, an expiration date of several days may be set for low-temperature circulation.

  Bags made of a plastic film with oxygen barrier properties, which contain a large amount of starch and sugar, and are intended for long-term storage of bread such as bread, confectionery bread, cooking bread, noodles such as soba noodles, udon In addition, an oxygen scavenger is housed to prevent mold generation. However, there is a problem in that condensation occurs in the bag, the water activity on the contents surface partially increases, and the yeast propagates.

  In addition, bread such as bread and confectionery bread, half-baked baked goods, etc., when packaged immediately after baking, a large amount of condensed water is generated in the bag, causing a decrease in texture. It is packaged after it has dropped to room temperature. However, many fixed costs and variable costs such as capital investment in the space and equipment for the cooling process and the time required for cooling are not only the factors that press down on profits, but the cooling process itself is the cause of microbial contamination. The water vapor generated by the contents is a big problem.

  Further, as a conventional breathable bag, there is a structure in which a filter tape (sterilized paper) is thermally bonded to the inner surface of the joint portion at both ends of the packaging material having a thermal adhesive film on the inner surface (for example, patent document) 2).

  Further, a moisture-permeable packaging bag having a structure in which a large number of thermoplastic resins are linearly formed in parallel on one side of the moisture-permeable substrate film (see Patent Document 3), or for moisture-permeable packaging in which a heat sealant is applied A bag (see Patent Document 4) is disclosed.

  By the way, in the plastic bag of Patent Document 1, for example, when a solid containing water such as an agar medium or fruits and vegetables is stored and sealed, water vapor transpiration from the contents itself or water droplets generated when the agar medium solidifies. Cannot be released sufficiently to the outside. For this reason, there is a problem in that condensation occurs on the inner surface of the bag or the surface of the petri dish and it rots.

  For this reason, when using an agar medium with condensation on the surface of the petri dish, remove the petri dish containing the agar medium from the plastic bag and open the petri dish in the clean bench. The petri dish into which the medium has been dispensed is left to dry.

  However, foreign substances such as microorganisms and dust floating in the air may be mixed in the petri dish into which the agar medium is dispensed during drying in the clean bench. If the number of specimens for detecting the presence of bacteria such as Escherichia coli in food is large, it takes time to handle the petri dish and the work efficiency is reduced. Moreover, if the petri dish which dispensed the agar medium in the state which produced dew condensation for a long time is stored, there exists a problem that possibility that it will change in quality will increase.

  Further, in the breathable packaging bag of Patent Document 2, since only the portion where the sterilized paper is formed is thick and the portion where the sterilized paper is not formed is thin, it is difficult to wind up and supply the packaging material, and the pillow packaging machine cannot wrap it. . For this reason, since the contents are filled after bag making, the filling speed is low, and the structure of the filling machine is complicated, resulting in poor productivity and high costs.

  In the moisture permeable packaging bag of Patent Document 3, the water vapor permeability can be adjusted by adjusting the width and interval of a large number of parallel formed thermoplastic resins. However, if the width is increased, the speed of the extruder is increased. It is necessary to lower. At the same time, the thickness of the thermoplastic resin also increases, so the amount of packaging material that can be wound by winding with the same diameter decreases, and there is a problem that productivity is significantly reduced, and the content is too dry However, it is the present situation that I use it with patience.

  Further, in the moisture-permeable packaging bag of Patent Document 4, since the water vapor permeability of the heat sealant is high, there are many contents that are too dry even when the heat sealant is applied to the entire surface, and the contents can be used with limited contents. I must. Further, even when a heat sealant is applied to the entire surface, it takes time to dry, so the application speed must be extremely reduced, leading to a reduction in productivity.

JP-A-8-205854 Japanese Utility Model Publication No. 51-15682 JP 2006-282240 A JP 2008-239230 A

  The present invention has been made in consideration of such points, and even when packaging a solid content containing water such as foods and drinks, pharmaceuticals, etc., the inside of the film is caused by water vapor evaporated from the content itself. Excess water vapor can be released to the outside without condensation on the surface, the contents can be prevented from drying out too much, moisture vapor permeability can be adjusted, and moisture-permeable packaging with excellent productivity It is an object to provide a material for use, a bag for moisture-permeable packaging, and a moisture-permeable packaging body.

  The present invention includes a moisture permeability control film having a substrate film having moisture permeability, a moisture permeability inhibitor layer provided in a pattern on the substrate film, and a heat sealant layer provided on the moisture permeability adjustment film, A moisture-permeable packaging material characterized by comprising:

  The present invention is the moisture permeable packaging material, wherein the heat sealant layer is provided on the moisture permeability adjusting film via an additional base film having moisture permeability.

  In the present invention, the base film is a plain cellophane film, polyvinyl alcohol film, nylon film, MXD nylon co-extruded nylon film, MXD nylon blend nylon film, ethylene / vinyl alcohol copolymer co-extruded nylon film, oxygen barrier layer coated nylon A moisture-permeable packaging material comprising a film or an ethylene / vinyl alcohol copolymer film.

  The present invention is the moisture permeable packaging material, wherein the moisture permeability inhibitor layer is made of a polyvinylidene chloride resin.

  In the present invention, the heat sealing agent layer and the moisture permeation inhibitor layer are both made of polyvinylidene chloride resin, and the heat sealing agent layer and the moisture permeation inhibitor layer are provided on the same surface of the base film. Is a moisture-permeable packaging material.

  In the present invention, both the heat sealant layer and the moisture permeation inhibitor layer are integrally formed by applying a polyvinylidene chloride resin on the same surface of the base film. A moisture-permeable packaging material having an endless pattern.

  The present invention is a moisture permeable packaging bag formed by fusing the above-described moisture permeable packaging material into a bag shape and fusing a heat sealant layer at the periphery.

  The present invention is a moisture-permeable packaging body comprising the moisture-permeable packaging bag described above and contents stored in the moisture-permeable packaging bag.

  According to the present invention, it is possible to discharge excess water vapor to the outside without causing condensation on the inner surface of the base film by water vapor evaporated from the content itself. Furthermore, by adjusting the area of the moisture permeation inhibitor layer provided in a pattern, it is possible to manufacture a moisture permeable packaging bag having a water vapor permeability suitable for the contents.

  In addition, by using a polyvinylidene chloride resin as a moisture permeation inhibitor layer, it can be pattern coated using a normal gravure rotary printing press, the water vapor permeability can be easily adjusted by adjusting the coating area, and By pattern coating, drying after printing becomes easier as compared with full surface solid printing, and productivity is improved.

  Further, since the polyvinylidene chloride resin constitutes both the heat seal agent layer and the moisture permeation inhibitor layer, both the heat seal agent and the moisture permeation inhibitor are placed on the same surface of the base film, and is a unit of the printing machine. Can be printed. Therefore, the registration printing of the heat sealant application pattern and the moisture permeation inhibitor application pattern is not necessary, and the production efficiency is significantly improved.

  In addition, since polyvinylidene chloride resin becomes transparent after drying, it is difficult to perform registration printing of these resins, but by using an endless pattern as the coating pattern, which part of the base film is used. Even when a moisture-permeable packaging bag is formed, a controlled water vapor transmission rate can be obtained, and registration printing of the resin is not required.

  In addition, the moisture-permeable packaging bag of the present invention can prevent the contents from being dried excessively while being able to release water vapor generated from the contents to the outside of the bag. By this, freshness maintenance and preservation of contents such as fruits and vegetables, processed meat products, marine products, breads, semi-noodles, semi-fresh confectionery, water-containing medical devices such as raw media, water-containing solid pharmaceuticals, water-containing solid cosmetics, etc. Can be demonstrated.

  Since the contents that have been packaged after the cooling process can be packaged immediately after heating without worrying about the dew condensation water in the bag, the probability of microbial contamination can be greatly reduced. Further, the process can be greatly simplified by omitting the cooling process, and the space and equipment for cooling can be omitted.

  Furthermore, in the packaging of the raw medium that is distributed in a state where the agar medium is dispensed into the petri dish, the raw medium can be used immediately after being taken out of the bag. Furthermore, since it becomes possible to design the water vapor permeability of the bag according to the amount of free water contained in the agar medium and the expiration date of the agar medium, it is possible to contribute to the extension of the expiration date of the raw medium.

FIG. 1 is a cross-sectional view of a moisture-permeable packaging material according to the present invention. FIG. 2 is a cross-sectional view showing a modification of the moisture-permeable packaging material according to the present invention. FIG. 3 is a schematic view showing an example of a moisture permeable packaging film in which a heat sealant layer and a moisture permeability inhibitor layer are applied in a pattern. FIG. 4 is a schematic view showing an example of a moisture-permeable packaging material in which a moisture permeability inhibitor layer is applied in an endless pattern and a heat sealant layer is applied in a pattern. FIG. 5 is a schematic view showing an example of a moisture-permeable packaging material in which a heat sealant and a moisture permeability inhibitor are used in common and both are applied in an endless pattern. FIG. 6 is a schematic view showing another example of a moisture-permeable packaging material in which a heat sealant and a moisture permeability inhibitor are used in common and both are applied in an endless pattern. FIG. 7 is a schematic view showing a moisture-permeable packaging bag according to the present invention. FIG. 8 is a schematic view showing a moisture-permeable packaging bag in which a heat seal agent and a moisture permeability inhibitor are used in common and applied in an endless pattern. FIG. 9 is a schematic view of a moisture-permeable packaging body in which contents are stored in a moisture-permeable packaging bag according to the present invention. FIG. 10 is a view showing a heat sealing agent layer and a moisture permeation inhibitor layer integrally formed on the base film.

  Next, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a moisture-permeable packaging material 1 constituting a moisture-permeable packaging bag 10 includes a substrate film 2 having moisture permeability and moisture permeability inhibition provided in a pattern on the lower surface of the substrate film 2. The agent layer 4 and the heat sealing agent layer 3 provided on the lower surface of the base film 2 so as to cover the moisture permeation inhibitor layer 4 are provided.

  Among these, the substrate film 2 and the moisture permeation inhibitor layer 4 constitute a moisture permeation adjusting film 2A. In FIG. 1, the heat sealant layer 3 is provided on the lower surface of the moisture permeability adjusting film 2 </ b> A. However, as shown in FIG. 2, additional moisture permeability is provided on the lower surface of the moisture permeability adjusting film 2 </ b> A via the adhesive layer 5. The base film 2a may be provided, and the heat sealant layer 3 may be provided on the lower surface of the additional base film 2a.

  The method of laminating the additional base film 2a on the permeation adjusting film 2A using the adhesive layer 5 is preferably dry lamination or wet lamination. Note that extrusion lamination of molten resin is not preferable because the resin of the adhesive layer significantly impairs the moisture permeability of the entire film surface.

  Further, in a moisture-permeable packaging bag produced by facing and heat-sealing the base film 2 having moisture permeability and the additional base film 2a, if drying proceeds too much depending on the contents, the moisture-permeable packaging Use of a film having a low water vapor transmission rate on at least one surface of the bag is preferable in that drying of the contents is suppressed.

  The base film 2 having moisture permeability and the additional base film 2a need to be films having water vapor permeability and water absorption.

Specifically, the base film 2 and the additional base film 2a are 40 ° C., 90% R.D. H. The water vapor permeability is preferably 50 g / m ² · d (measurement conditions, 40 ° C., 90% RH, the same applies hereinafter) or more, and the water absorption is preferably 5% or more.

  When the water vapor permeability or the water absorption rate of the base film 2 and the additional base film 2a does not satisfy the above range, particularly when the water absorption rate is low, extra water vapor evaporated from the content itself is released to the outside. This is not preferable because the time required to do this becomes long and condensation occurs inside the moisture-permeable packaging bag.

In addition, although the numerical value of water vapor transmission rate represents the permeation | transmission amount of the water vapor which permeate | transmits the base film 2 and the additional base film 2a, the base film 2 and the additional base film 2a with a high water absorption rate are dew condensation inside a bag. Since the water is directly absorbed and released from the outer surface of the bag, the moisture inside the bag is released to the outside at a value greater than the water vapor permeability. In addition, when the content is stored for a long period of time, if the water vapor permeability is not designed to be low, it will dry too much. However, if the base film 2 and the additional base film 2a having a high water absorption rate are used, the water vapor permeability is 50 g / Even if designed to be less than m ² · d, the portion of the base film 2 where the moisture permeation inhibitor layer 4 is not applied absorbs the condensed water generated immediately after packaging and releases it to the outside. And after the dew condensation water disappears, the amount of external release of water vapor is controlled by the water vapor permeability of the base film 2 and the additional base film 2a, and can be kept for a long time. Is a guide. However, in the case of PVdC coated (polyvinylidene chloride coated) nylon film, metal-deposited nylon film, metal oxide-deposited nylon film, etc., even if the base film 2 and the additional base film 2a having a high water absorption rate are used, Since the moisture permeation inhibiting layer is formed on the entire surface, it is not used as the base film 2 and the additional base film 2a.

  Specifically, as the base film 2 having moisture permeability and the additional base film 2a, plain cellophane film, polyvinyl alcohol film, nylon film, MXD (metaxylenediamine) nylon coextruded nylon film (Kojin Co., Ltd.) Product name “SPY”, etc., MXD nylon blend nylon film (made by Idemitsu Unitech Co., Ltd., trade name “Uniathlon” etc.), EVOH (ethylene / vinyl alcohol copolymer) co-extruded nylon film (made by Unitika Ltd., Brand name “Emblem E300”, etc., oxygen barrier layer coated nylon film (made by Kojin Co., Ltd., trade name “Co-Barrier”, Kureha Chemical Industry Co., Ltd., trade name “Besera”, Kuraray Co., Ltd., trade name “Clarista” Etc.), or EVOH film You can use.

  In the present invention, among others, MXD nylon co-extruded nylon film, MXD nylon blend nylon film, EVOH co-extruded nylon film, oxygen barrier layer-coated nylon film, or EVOH film has a high water vapor transmission rate and excellent oxygen barrier properties. In other words, since a film having the effect of a pseudo-selective permeable membrane can be obtained, when used as the base film 2 and the additional base film 2a, it can be preferably used for deoxygenation packaging in which an oxygen scavenger is enclosed together with the contents.

  The substrate film 2 having the moisture permeability and the additional substrate film 2a preferably have a thickness of about 10 μm to 100 μm. If the thickness of the base film 2 and the additional base film 2a is less than 10 μm, the strength as a film constituting the packaging bag 10 is reduced, which is not preferable. This is not preferable because the degree is lowered.

  Moreover, a character, a picture, etc. can also be printed on said base film 2 and additional base film 2a by gravure printing etc.

  As the moisture permeation inhibitor layer 4, an aqueous or oily PVdC (polyvinylidene chloride) resin coating agent can be suitably used.

  The moisture permeation inhibitor layer 4 is formed in order to apply a pattern to one side of the substrate film 2 having moisture permeability and adjust the water vapor permeability of the substrate film 2.

  The moisture permeation inhibitor layer 4 is applied using various coaters and gravure printing machines that can be coated with a pattern. When performing registration printing with a heat sealant or other printing ink on a gravure printing machine, if the moisture permeation inhibitor layer 4 is transparent, a pigment or dye may be added to the moisture permeation inhibitor, It may be colored by mixing a certain ink.

  Moreover, additives, such as an antiblocking agent, a slip agent, and an antistatic agent, may be added to the moisture permeation inhibitor layer 4 as necessary.

The coating amount of the moisture permeation inhibitor layer 4 depends on the moisture permeation inhibiting performance of the moisture permeation inhibitor, but is 10 g / m ² (not considering the unapplied part and the coating amount only on the coated part per 1 m ² . (The same applies hereinafter) The following is preferable. In general, if it exceeds 10 g / m ² , drying becomes difficult, and blocking is generated, and it is inappropriate because it adheres to the roller of the machine. However, when the ratio of the coated area is small or each pattern is small, it is not limited to this because it becomes easy to dry.

When the moisture permeation inhibitor layer 4 is formed, the moisture permeation inhibiting performance of the moisture permeation inhibitor used, the coating, etc., depending on the water vapor permeability of the substrate film 2 having moisture permeability, the contents, the storage period of the contents, and the like. Examine the application amount and the coating area ratio. For example, the substrate film 2 of the water vapor permeability of 300 g / m ² · d, the water vapor permeability to form a moisture permeable inhibitor layer 4 of 100 g / m ² · d at a coating with an area ratio of 50%, a water vapor permeability The calculation is approximately 190 g / m ² · d.

That is, the reason why the water vapor permeability is about 190 g / m ² · d is as follows. In general, the water vapor permeability C of a film obtained by laminating a film having a water vapor permeability A and a film B is represented by the relationship 1 / A + 1 / B = 1 / C.
When a coating film having a water vapor transmission rate of 100 g is formed on a base film having a water vapor transmission rate of 300 g, the water vapor transmission rate X is 1/300 + 1/100 = 0.0033 + 0.01 = 0.133 = 1 / X, so X = It is calculated as 75 g / m ² · d.
Therefore, the water vapor permeability of the moisture-permeable inhibitor application part 75 g, water vapor transmission rate of the non-coating portion so 300 g, when is 50% coating area ratio of the moisture-permeable inhibitor, in per 1 m ^2, 37 from the coating unit. Since 5 g / d and 150 g / d of water vapor permeate from the non-applied part, 37.5 + 150 = 187.5 g / m ² · d, that is, about 190 g / m ² · d.

Thus, the water vapor permeability of the moisture-permeable packaging material 1 according to the present invention is determined by the combination of the moisture-permeable base film 2 and the moisture-permeation inhibitor layer 4, and further, for example, a single nylon film is taken. However, since the water vapor permeability varies depending on the manufacturer even at the same thickness, it is not possible to generally define the performance of the moisture permeation inhibitor. However, the moisture permeation inhibitor layer 4 that can obtain a lower water vapor transmission rate with the same coating amount can reduce the coating amount and the coating area ratio, so that drying after coating becomes easy and the production efficiency is improved. Good and preferred. The moisture permeation inhibitor having a water vapor permeability of 200 g / m ² · d or less when a moisture permeation inhibitor layer having a coating amount of 5 g / m ² is formed on the entire surface will be described. However, it can be used more suitably.

The moisture permeability of the moisture-permeable packaging material 1 according to the present invention is designed according to the moisture content of the contents and the storage period, and the base film 2 releases moisture even if the moisture permeability is low. The amount is also large. For this reason, although the range of the water vapor permeability for functioning as a moisture-permeable packaging film cannot generally be limited, it is generally moisture permeable if it has a water vapor permeability of 50 g / m ² · d or more. It can be suitably used as the packaging material 1.

  In addition, the metal vapor deposition film or metal oxide vapor deposition film which carried out pattern vapor deposition can also obtain the same effect as apply | coating the moisture-permeation inhibitor which consists of the material mentioned above, Therefore, these metal vapor deposition film or metal oxide The moisture permeation inhibitor layer 4 may be formed by a vapor deposition agent.

  The moisture permeation inhibitor layer 4 is formed on one side of the substrate film 2 having moisture permeability. Normally, it is formed on the inner surface of the base film 2 in the same manner as the heat sealing agent application surface. However, if the moisture permeation inhibiting effect is reduced, the coating film is dissolved or scraped off due to the interference of the contents, It may be formed on the outer surface of the material film 2.

  The application pattern of the moisture permeation inhibitor layer 4 may be any shape such as a rectangle, a lattice, a checkered pattern, a stripe, a polka dot, a character, and a pattern, and is not particularly limited.

  The position where the moisture permeation inhibitor is applied may be registered and printed only on the inner surface of the moisture permeable packaging bag 10 as shown in FIG. 3, and as shown in FIG. The moisture permeation inhibitor layer 4 may be formed by coating the entire surface in an endless pattern, and the heat seal agent layer 3 may be provided on the moisture permeation inhibitor layer 4.

  3 and 4, the heat seal portion 8 is provided with slit lines 6 and cutting lines 7.

  The heat sealant layer 3 according to the present invention is formed for imparting heat sealability to one side of the base film 2 or the additional base film 2a.

The heat sealant layer 3 is formed on the entire surface of one side of the base film 2 or the additional base film 2a with a solid or endless pattern, or when making a packaging bag by a gravure printing machine or the like. It is also possible to selectively form a pattern only on the heat seal portion. When the heat sealant layer 3 is formed in an endless pattern, it is a continuous pattern in which all the patterns are connected, and the horizontal and vertical lengths of the non-applied portion are not more than half of the heat seal width. The sealing property of the heat seal part 8 is improved (FIGS. 7 and 8).
In particular, it becomes possible to manufacture a completely sealed bag in the moisture permeable packaging bag 10 and has a water absorption property, and an oxygen scavenger is enclosed together with the contents by using the base film 2 or the additional base film 2a having an oxygen barrier property. Deoxygenated packaging, gas replacement packaging, and the like are possible.

As said heat seal agent layer 3, what is necessary is just the resin which has the heat sealing property which can be fuse | melted by heating and can mutually fuse | fuse, For example, emulsion of polyolefin resin, polyethyleneimine, polyvinyl alcohol resin, Polyvinyl chloride resin, PVdC resin, etc. can be used. As the coating amount of heat-sealing material layer 3 of ^{the, 1g / m 2 ~10g / m} 2 position is preferred.

  In FIG. 5, the same material is used as the heat sealant layer 3 and the moisture permeation inhibitor layer 4, and the heat sealant layer 3 and the moisture permeation inhibitor layer 4 are applied in an endless pattern and integrally formed. It is the schematic which shows the packaging material 1. FIG.

  As shown in FIGS. 5 and 10, the moisture-permeable packaging material 1 includes a substrate film 2 having moisture permeability, a heat sealant layer 3 integrally formed in a pattern on the lower surface of the substrate film 2, and a transparent film. And a wetness inhibitor layer 4.

  In FIG. 6, the same material is used as the heat sealant layer 3 and the moisture permeability inhibitor layer 4, and the heat sealant layer 3 and the moisture permeability inhibitor layer 4 are applied in an endless pattern and integrally formed. FIG. 6 is a schematic diagram showing the moisture-permeable packaging material 1, and unlike FIG. 5, the heat sealant layer 3 and the moisture-permeable inhibitor layer 4 are applied all over only the longitudinal seal portion.

  The heat sealing agent layer 3 and the moisture permeation inhibitor layer 4 are integrally formed by applying in an endless pattern, and uncoated portions at both ends of the base film 2 are removed by a cutting process to take up a uniform width of the moisture permeability. The packaging material 1 can be obtained, and by using the base film 2 having a wide width, it is possible to obtain a plurality of rows of wound moisture-permeable packaging materials 1.

  By forming the heat sealant layer 3 and the moisture permeation inhibitor layer 4 made of the same material applied in an endless pattern in this way, the heat sealant layer 3 and the light-transmitting agent layer 3 that are difficult to register because they become transparent after drying. The moisture inhibitor layer 4 can be easily formed with various coaters and can be applied with a gravure printing machine without registering. Even if it becomes transparent after drying, it can be easily registered and printed with other characters and patterns by coloring it by adding pigments or dyes or mixing compatible inks. become.

  Moreover, when forming the heat-sealant layer 3 and the moisture permeation inhibitor layer 4, before or after printing of characters, designs, etc. on the base film 2, and further on the base film 2, The heat sealant layer 3 and the moisture permeation inhibitor layer 4 can be formed in a separate process also on the base film 2 that has been printed and laminated using an adhesive. In that case, the coating process of heat sealant and moisture permeation inhibitor, which cannot increase the printing speed due to the large amount of coating and difficult to dry, can be separated from the printing process of characters, pictures, etc. Can be improved.

  In particular, a heat sealing agent and moisture permeation inhibition are applied to a laminated substrate film 2 in which a back surface of characters, patterns, etc. is applied to one substrate film 2 and another substrate film 2 is laminated on the printed surface using an adhesive. Since the agent can be applied, the printing ink surface is not exposed on the surface, the contents and the ink do not come into contact with each other, and it is possible to manufacture the hygroscopic packaging material 1 that does not lose ink. In this case, the laminated base film 2 is constituted by the two base films 2.

  The application pattern of the heat sealant layer 3 and the moisture permeation inhibitor layer 4 may be any rectangle, lattice, checkered pattern, stripe, polka dot, character, pattern, or the like. By making it a continuous pattern in which all the patterns are connected, and making the horizontal and vertical lengths of the non-applied part be less than half of the heat seal width, the sealing performance of the heat seal part is improved, especially In the four-side sealed bag, a completely sealed bag can be manufactured. Further, by using the base film 2 having water absorption and oxygen barrier properties, it is possible to perform deoxygenation packaging in which a deoxidizer is enclosed together with the contents, gas replacement packaging, and the like.

  As shown in FIG. 7, in the moisture permeable packaging bag 10 according to the present invention, the heat sealant layer 3 is formed on the heat seal planned portion inside the base film 2, and the moisture permeation inhibitor is formed on the portion covering the contents. It has the moisture-permeable packaging material 1 in which the layer 4 was formed. In FIG. 7, a moisture-permeable packaging bag 10 is shown in which the heat-sealing agent is fused and the opening 11 is left as a whole, and the three sides are closed by the heat-sealing portion 8.

  As the moisture permeable packaging bag 10, packaging bags having various forms such as a three-side seal bag, a bag bag, a pillow bag, a gusset bag, a stand pack, and the like are conceivable depending on the purpose and application. In addition, a four-side sealed bag is suitable for applications that require hermetic sealing, such as deoxygenated packaging and gas replacement packaging.

  In addition, by providing the notch 9 in the heat seal part 8, opening of the packaging bag 10 is facilitated.

  As shown in FIG. 8, the heat-sealable agent layer 3 and the moisture-permeable inhibitor layer 4 are integrally formed from the same material, and the heat-sealable layer 3 and the moisture-permeable inhibitor layer 4 have an endless pattern. Has a moisture-permeable packaging material 1 in which a moisture-permeable inhibitor layer 4 (heat-seal agent layer 3) made of the same material is formed on a portion covering the heat-sealable portion and contents inside the base film 2. . Then, the heat-sealable portions are fused together, and the moisture-permeable packaging bag 10 is configured by being closed by the back seal portion 8a and the bottom seal portion 8b, leaving the opening 11 as a whole.

  As the moisture permeable packaging bag 10 according to the present invention, various types of packaging bags such as a three-sided seal bag, a sack bag, a pillow bag, a gusset bag, a stand pack, and the like are manufactured according to the purpose and application. Can do. In addition, a four-side sealed bag is suitable for applications that require hermetic sealing, such as deoxygenated packaging and gas replacement packaging.

  Further, by providing the notch 9 in the vicinity of the bottom seal portion 8b, the moisture-permeable packaging bag 10 can be easily opened.

  FIG. 9 is a schematic view showing a moisture-permeable packaging body 20 in which the contents M are stored in the moisture-permeable packaging bag 10 according to the present invention.

  The moisture-permeable packaging body 20 according to the present invention is obtained by fusing the opening 11 after filling the contents from the opening 11 of the moisture-permeable packaging bag 10. In the moisture permeable packaging 20, it is possible to release water vapor generated from the contents to the outside of the packaging bag 10, and to prevent the contents from being dried excessively by the effect of providing the moisture permeability inhibitor layer 4. it can.

  In particular, since a completely sealed bag can be manufactured in a four-sided sealed bag as shown in the figure, it is possible to deoxygenate together with the contents M by using the base film 2 and the additional base film 2a having water absorption and oxygen barrier properties. Deoxygenation packaging in which the agent 12 is sealed, gas replacement packaging, and the like are possible.

  Next, the present invention will be described in more detail with reference to examples and comparative examples.

  Example 1 corresponds to a moisture-permeable packaging bag 10 using the moisture-permeable packaging material 1 shown in FIG.

As the base film 2 having water absorption, a nylon film having a thickness of 15 μm (manufactured by Kojin Co., Ltd., product name “Bonyl Q”, water vapor transmission rate 300 g / m ² · d, water absorption 15%) is used. On the corona-treated surface of film 2, an ethylene / vinyl acetate copolymer (hereinafter referred to as EVA) emulsion (manufactured by Dainichi Seika Kogyo Co., Ltd., product name “Seikadyne 1900W”) is used as a heat sealant, and the length is 360 mm × Heat seal with a frame pattern of 340mm in width, 10mm in coating width, 5g / m ^{2 in} coating amount (the coating amount only on the coating portion is expressed in terms of coating amount per 1 m ² without considering the uncoated portion, the same applies hereinafter) The agent layer 3 was formed.

Moreover, PVdC resin emulsion colored by red No. 2 (manufactured by Dainichi Seika Kogyo Co., Ltd., prototype) as a moisture permeation inhibitor in the central blank part of the base film 2 is 235 mm long × 230 mm wide, with a coating amount of 4 g / Using the solid rectangle of m ² and printing by register printing using a gravure printing machine, the moisture permeation inhibitor layer 4 was formed. Thus, the moisture-permeable packaging material 1 according to the present invention was produced. In addition, the application area rate of the moisture-permeable inhibitor layer 4 of the moisture-permeable packaging material 1 is 50%.

  Cut out the moisture-permeable packaging material 1 obtained above along the outer edge of the frame shape of the heat sealant layer 3, heat seal the back and bottom with a heat seal width of 10mm with the heat sealant layer 3 formation inside And the heat-sealing part 8 was formed and the moisture-permeable packaging bag 10 which concerns on this invention which consists of a pillow bag which is 360 mm long and 160 mm wide and has an opening part in one end was produced. The heat seal portion 8 was provided with a notch 9.

  Example 2 corresponds to a moisture-permeable packaging bag 10 using the moisture-permeable packaging material 1 shown in FIG.

Using the same nylon film as in Example 1 as the substrate film 2 having water absorption, the same moisture permeation inhibitor as in Example 1 was applied at a coating amount of 4 g / m ² , a vertical stripe having a width of 2 mm and a space width of 2 mm. The moisture permeation inhibitor layer 4 was formed by coating the entire surface. On the coated surface, the same heat sealing agent as in Example 1 was printed with a gravure printing machine in a frame pattern of 360 mm long × 340 mm wide, coating width 10 mm, coating amount 5 g / m ² , and heat sealing. The agent layer 3 was formed to manufacture the moisture-permeable packaging material 1 according to the present invention. In addition, the application area rate of the moisture-permeable inhibitor layer 4 of the moisture-permeable packaging material 1 is 50%.

  The moisture-permeable packaging material obtained above is cut along the outer edge of the frame shape of the heat sealant layer 3, and the back and bottom parts are heat sealed with a heat seal width of 10 mm with the heat sealant layer 3 formed inside. Then, the heat-sealing portion 8 was formed, and a moisture-permeable packaging bag 10 according to the present invention consisting of a pillow bag having an opening at one end of 360 mm in length and 160 mm in width was produced. The heat seal portion 8 was provided with a notch 9.

  Example 3 corresponds to a moisture-permeable packaging bag 10 using the moisture-permeable packaging material 1 shown in FIG.

As the base film 2 having water absorption, the same nylon film as in Example 1 was used, and the moisture permeation inhibitor used in Example 1 was changed to a line width of 0.8 mm, a space width of 2 mm, a coating amount of 4 g / m ² , an angle. The film 2 was printed on the entire surface of the film 2 with a 45 degree lattice pattern, and the heat sealant layer 3 and the moisture permeation inhibitor layer 4 were integrally formed to produce the moisture permeable packaging material 1 according to the present invention. In addition, the application area rate of the moisture-permeable inhibitor layer 4 of the moisture-permeable packaging material is 50%.

  The present invention has an opening 11 at one end of 360 mm in length, 180 mm in width, and 10 mm in heat seal width from the moisture-permeable packaging material obtained above using a bag making machine, and a heat seal portion 8 in the remaining three sides. A moisture-permeable packaging bag 10 according to the above was produced. The heat seal portion 8 was provided with a notch 9.

  Example 4 corresponds to the moisture-permeable packaging bag 10 using the moisture-permeable packaging material 1 shown in FIG.

The same nylon film as in Example 1 was used as the base film 2 having water absorption, and the moisture permeation inhibitor used in Example 1 was 1.5 mm in line width, 1.5 mm in space width, and 4 g / m ^{2 in} coating amount. The entire surface of the film was printed with a lattice pattern with an angle of 45 degrees, and the heat sealant layer 3 and the moisture permeation inhibitor layer 4 were integrally formed to produce the moisture permeable packaging material 1 according to the present invention. In addition, the application area rate of the moisture-permeable inhibitor layer 4 of the moisture-permeable packaging material 1 is 75%.

  A book having an opening 11 at one end of 360 mm in length, 180 mm in width, and 10 mm in heat seal width from the moisture-permeable packaging material 1 obtained as described above, and a heat seal portion 8 in the remaining three sides. A moisture permeable packaging bag 10 according to the invention was produced. The heat seal portion 8 was provided with a notch 9.

  Example 5 corresponds to a moisture-permeable packaging bag 10 using the moisture-permeable packaging material 1 shown in FIG.

As a base film 2 having water absorption and oxygen barrier properties, MXD nylon co-extruded nylon film with a thickness of 15 μm (trade name “SPY” manufactured by Kojin Co., Ltd., water vapor transmission rate 100 g / m ² · d, water absorption 8% ), The heat sealant layer 3 and the moisture permeation inhibitor layer 4 were integrally formed on the entire corona-treated surface in the same manner as in Example 3 to produce the moisture permeable packaging material 1 according to the present invention. .

  A book having an opening 11 at one end of 360 mm in length, 180 mm in width, and 10 mm in heat seal width from the moisture-permeable packaging material 1 obtained as described above, and a heat seal portion 8 in the remaining three sides. A moisture permeable packaging bag 10 according to the invention was produced. The heat seal portion 8 was provided with a notch 9.

  Example 6 corresponds to the moisture-permeable packaging bag 10 using the moisture-permeable packaging material 1 shown in FIG.

As the base film 2 having water absorption and oxygen barrier properties, an EVOH film having a thickness of 15 μm (product name “EVAL CR”, product name “Eval CR”, water vapor permeability 140 g / m ² · d, water absorption 10%) manufactured by Kuraray Co., Ltd.) On the corona-treated surface, characters and pictures were printed using a gravure printing machine, and subsequently the moisture permeation inhibitor was used on the entire surface of the base film 2 with the same pattern and application amount using the same moisture permeation inhibitor as in Example 3. The agent layer 4 was printed. Furthermore, using the two-component curable urethane resin adhesive 5 on the printing surface of the base film 2, as an additional base film 2a having water absorption, a nylon film having a thickness of 15 μm (product name “manufactured by Kojin Co., Ltd.,” Bonile W ”, water vapor transmission rate 300 g / m ² · d, water absorption 15%) were bonded together. Next, on the entire surface of the nylon film, an EVA emulsion (manufactured by Dainichi Seika Kogyo Co., Ltd., product name “Seikadine 1900W”) is used as a heat sealant, with a line width of 0.8 mm, a space width of 2 mm, and a coating amount of 5 g / m ^2. , Printed with a lattice pattern at an angle of 45 degrees, and provided with a heat sealant layer 3, layer structure, EVOH film (15 μm) / ink / moisture permeability inhibitor layer / adhesive layer / nylon film (15 μm) / heat sealant layer A moisture-permeable packaging material 1 according to the present invention was produced.

  The present invention has an opening 11 at one end of 360 mm in length, 180 mm in width, and 10 mm in heat seal width from the moisture-permeable packaging material obtained above using a bag making machine, and a heat seal portion 8 in the remaining three sides. A moisture-permeable packaging bag 10 according to the above was produced. The heat seal portion 10 was provided with a notch 9.

[Comparative Example 1]
As a substrate film, a 15 μm thick silicon oxide vapor-deposited nylon film (Dai Nippon Printing Co., Ltd., product name “IB-ON-FRC”, water vapor permeability 2 g / m ² · d) is used. A PVdC resin emulsion (manufactured by Dainichi Seika Kogyo Co., Ltd., prototype) is printed on the entire surface of the film in a lattice pattern with a line width of 0.8 mm, a space width of 2 mm, a coating amount of 4 g / m ² and an angle of 45 degrees, and heat-sealed. An agent layer and a moisture permeation inhibitor layer were provided, and the packaging material of Comparative Example 1 was produced.

  From the moisture-permeable packaging film obtained above, a bag having a length of 360 mm, a width of 180 mm, and a heat seal width of 10 mm, having an opening at one end and heat-sealed on the remaining three sides, using a bag making machine. A packaging bag of Comparative Example 1 was produced. In addition, the notch was provided in the heat seal part.

[Comparative Example 2]
A packaging material of Comparative Example 2 is produced which is different from Example 1 only in that the heat sealing agent layer is printed with the same nylon film and heat sealing agent, pattern and coating amount as in Example 1, and the moisture permeation inhibitor is not applied. did.

  The packaging material of Comparative Example 2 obtained above was cut along the outer edge of the frame shape of the heat sealant layer, and the back and bottom portions were heat sealed with a heat seal width of 10 mm with the heat sealable resin forming portion inside. Then, a heat sealing part was formed, and a packaging bag of Comparative Example 2 made of a pillow bag having a length of 360 mm and a width of 160 mm and having an opening at one end was produced. In addition, the notch was provided in the heat seal part.

[Comparative Example 3]
A heat sealing agent layer was printed on the same base film as in Example 5 with the same heat sealing agent, pattern and coating amount as in Example 1 to produce a packaging material of Comparative Example 3.

  From the packaging film of Comparative Example 3 obtained above, a bag having a length of 360 mm, a width of 180 mm, and a heat seal width of 10 mm, having an opening at one end and heat-sealed on the remaining three sides using a bag making machine. A packaging bag of Comparative Example 3 was prepared. In addition, the notch was provided in the heat seal part.

(Measurement result of water vapor permeability)
The composition of the moisture-permeable packaging film obtained above is summarized in Table 1, and the measurement results of water vapor permeability and heat seal strength (heat seal conditions, 140 ° C., 0.1 MPa, 2 seconds) are shown in Table 2.

  The method for measuring the water vapor transmission rate is 40 ° C. and 90% relative humidity based on JIS Z0208 (Test method for water vapor transmission rate of moisture-proof packaging material (cup method)). H. It was measured by.

As shown in Table 1, since the moisture-permeable packaging materials of Examples 1 to 4 and the packaging material of Comparative Example 3 all have a water vapor permeability of 100 g / m ² · d or more, Excess water vapor can be quickly released to the outside, and it is suitable for packaging moisture-rich contents. The moisture permeable packaging films of Examples 5 and 6 have a water vapor permeability of less than 100 g / m ² · d, and are suitable for packaging contents with low moisture content or contents that require long-term storage. ing.

(Moisture release test 1)
As the contents, a potato dextrose agar medium (manufactured by Eiken Chemical Co., Ltd.) prepared and dispensed in a petri dish made of polystyrene having a diameter of 90 mm and a height of 14 mm was used.

  Thereafter, the contents of the agar medium as described above were dispensed, and in a state where 10 inverted petri dishes were stacked, the moisture-permeable packaging bag according to the present invention of Examples 1 to 6 obtained above and a comparison It accommodated from the opening part of the packaging bag of Examples 1-3, gave the heat sealing of 10 mm width to the opening part, and sealed, and produced this moisture-permeable packaging body.

  Thereafter, the package obtained as described above was stored in a refrigerator having an internal temperature of about 5 ° C., and the contents were taken out and observed after 2 weeks and 4 weeks.

  As a result, the moisture-permeable packaging bodies of Examples 1 to 3 are condensed on the inner surface of the base film by releasing water vapor evaporated from the contents themselves after two weeks and after four weeks. In addition, the contents could be used immediately after being taken out of the moisture-permeable packaging bag without being too dry.

  Therefore, the conventional step of leaving the petri dish surface to dry overnight is unnecessary, and there is no concern of being contaminated by microorganisms during the standing. In addition, since the petri dish surface is not wet, it is possible to apply an identification label when smearing the specimen on the medium immediately after taking out from the package, and it is also possible to write letters with oil-based ink on the petri dish surface It was possible.

  Moreover, also in the moisture-permeable packaging body of Examples 4-6, without condensing on the internal surface of a base film by releasing the water vapor | steam transpired from the content itself after 2 weeks and 4 weeks afterward. In addition, the contents could be used immediately after being taken out of the bag without being too dry. Further, since the surface of the petri dish is not wet, an identification label can be affixed when the specimen is smeared on the culture medium, and characters can be written on the petri dish surface with oil-based ink.

  Therefore, even in these packages, the conventional step of leaving the petri dish surface to dry overnight is unnecessary, and there is no concern of being contaminated with microorganisms during the standing.

  In addition, the moisture-permeable package of Comparative Example 1 cannot release water vapor evaporated from the contents itself after 2 weeks and 4 weeks, and water is condensed in the packaging bag. Since the surface of the petri dish was accumulated and the petri dish surface was wet, it was not possible to attach an identification label immediately after taking out from the packaging bag or to write characters with oil-based ink on the petri dish surface.

  Therefore, it is necessary to take out the contents from the packaging bag and dry them before using the contents, and there is concern about contamination by microorganisms during drying.

  In addition, the moisture-permeable package of Comparative Example 2 did not cause condensation on the inner surface of the base film by releasing the water vapor evaporated from the contents itself after 2 weeks, but after 2 weeks. The contents were already too dry and the agar shrunk and was not ready for use.

  In addition, the moisture-permeable package of Comparative Example 3 does not cause condensation on the inner surface of the base film by releasing water vapor evaporated from the content itself after 2 weeks and after 4 weeks. The contents were not too dry and could be used immediately after being taken out of the bag.

  However, since the moisture permeation inhibitor layer is not formed, the base film, the storage period, the use, and the like are limited because the free water is low and the packaging of contents that are easy to dry is not possible.

(Moisture release test 2)
As the contents, a standard agar medium (manufactured by Eiken Chemical Co., Ltd.) was prepared and dispensed in a petri dish made of polystyrene having a diameter of 90 mm and a height of 14 mm. The oxygen-absorbing agent (product name “AGELESS SA-200”, manufactured by Mitsubishi Gas Chemical Co., Ltd.) from the openings of the moisture-permeable packaging bags according to the present invention of Examples 5 and 6 and the packaging bag of Comparative Example 1 ) And sealed by applying a heat seal with a width of 10 mm to the bag opening to produce a moisture-permeable package.

  Thereafter, the package obtained as described above was stored in a refrigerator having an internal temperature of about 5 ° C., and after 1 week, the condition inside the package was observed and the oxygen concentration in the package was measured with a zirconia oxygen meter.

  As a result, the moisture-permeable packaging bag according to the present invention of Examples 5 and 6 has zero oxygen concentration in the bag and is not condensed on the inner surface of the film by water vapor evaporated from the content itself. Excess water vapor could be released to the outside without the contents being too dry, and the normal agar medium as the contents was excellent in maintaining the freshness and preservability.

  Therefore, the process of leaving overnight for drying the petri dish surface, which has been performed conventionally, is unnecessary, and there is no fear of being contaminated with microorganisms during standing, and a large amount of oxygen dissolves in the agar medium during standing, No more worries about anaerobic culture. In addition, since the petri dish surface is not wet, it is possible to apply an identification label when smearing the specimen on the medium immediately after taking out from the package, and it is also possible to write letters with oil-based ink on the petri dish surface It was possible.

  In addition, the packaging bag of Comparative Example 1 had an oxygen concentration in the bag of zero, but water vapor evaporated from the contents itself could not be released to the outside, and water was condensed in the packaging bag. Since the surface of the petri dish was accumulated and the petri dish surface was wet, it was not possible to attach an identification label immediately after taking out from the packaging bag or to write characters with oil-based ink on the petri dish surface.

  Therefore, it is necessary to remove the contents from the packaging bag and dry them before using them, and there are concerns about contamination by microorganisms during drying and adverse effects on anaerobic culture due to dissolution of oxygen in the agar medium.

(Moisture release test 3)
The moisture-permeable packaging material according to the present invention in Examples 3 to 5 and the packaging material of Comparative Examples 1 and 2 have an opening at one end of 180 mm in length, 100 mm in width, and 10 mm in heat seal width. A moisture-permeable packaging bag according to the present invention was produced, comprising a bag heat-sealed on three sides.

  From the openings of the packaging bags of Examples 3 and 4 and Comparative Example 2, the leaf-shaped cocoons (one piece) are stored as the contents, and the bag openings are heat sealed to 10 mm width and sealed. Thus, a moisture-permeable package was produced. Furthermore, from the opening part of the packaging bag of Example 5 and Comparative Example 1, an oxygen scavenger (product name “AGELESS SA-50”, manufactured by Mitsubishi Gas Chemical Co., Ltd.) is housed together with the bamboo leaf-shaped bag. A 10 mm wide heat seal was applied to the opening and sealed to prepare a moisture-permeable package.

  Thereafter, the moisture-permeable package obtained above was stored for 1 week in an incubator having an internal temperature of about 25 ° C.

  As a result, the moisture-permeable packaging body according to the present invention of Examples 3 to 5 can release excess water vapor to the outside without excessively drying the contents, so that the inner film and contents of the moisture-permeable packaging bag No sticking phenomenon was observed, the appearance was good, and the growth of microorganisms was not observed in appearance. Further, the moisture-permeable package according to the present invention of Example 5 was further stored for 1 week in an incubator having an internal temperature of about 25 ° C., but no growth of microorganisms such as mold was observed in appearance.

  In addition, the packaging body of Comparative Example 1 exhibited an unsightly appearance because the film and the contents adhered to each other due to water vapor transpiration from the contents themselves and moisture due to water separation. Moreover, yeast propagated on the surface of the cocoon and presented a strange odor.

  In the package of Comparative Example 2, the contents were too dry, causing a decrease in texture.

(Moisture release test 4)
After storing four freshly baked butter rolls having a surface temperature of about 90 ° C. as the contents from the opening of the moisture-permeable packaging bag according to the present invention of Example 4 and the packaging bag of Comparative Example 2. The package was manufactured by applying a heat seal of 10 mm width to the bag opening.

  The package obtained above was stored in a thermostatic bath at 30 ° C. for 2 days.

  As a result, the moisture-permeable package according to Example 4 can release excess water vapor to the outside without condensation on the inner surface of the film due to water vapor evaporated from the content itself, and without the content being too dry. And it was in a state of maintaining a moist feeling of freshly baked.

  However, the package according to Comparative Example 2 is capable of releasing excess water vapor to the outside without condensation on the inner surface of the film due to water vapor evaporated from the contents itself, but the surface of the bread is dried, The texture has decreased.

  From this result, it is clear that baked bread can be packaged, and it is possible to reduce microbial contamination by omitting the cooling process, or to sell it on a tray in a normal baked bread shop. Since it can be sold in a packaged state, it has been found that the present invention can provide a sales method excellent in hygiene.

DESCRIPTION OF SYMBOLS 1 Material for moisture-permeable packaging 2 Base material film 2A Moisture permeability adjusting film 2a Additional base material film 3 Heat seal agent layer 4 Moisture permeability inhibitor layer 5 Adhesive layer 6 Slit position 7 Cutting position 8 Heat seal part 9 Notch 10 Moisture permeable packaging Bag 11 Opening 12 Oxygen Absorber 20 Moisture-permeable Package M Contents

Claims (6)

A moisture permeability control film comprising a substrate film having moisture permeability, and a moisture permeability inhibitor layer provided on the substrate film;
The base film is made of plain cellophane film, polyvinyl alcohol film, nylon film, MXD nylon co-extruded nylon film, MXD nylon blend nylon film, ethylene / vinyl alcohol co. A polymer coextruded nylon film, an oxygen barrier layer coated nylon film, or an ethylene / vinyl alcohol copolymer film, and a moisture permeation inhibitor layer is made of a polyvinylidene chloride resin and has a moisture permeability. A moisture-permeable packaging material, characterized by being formed by printing a polyvinylidene chloride resin in a pattern.   The moisture-permeable packaging material according to claim 1, wherein the heat-sealing agent layer is provided on the moisture-permeable adjusting film via an additional substrate film having moisture permeability.   The heat seal agent layer and the moisture permeation inhibitor layer are both made of polyvinylidene chloride resin, and the heat seal agent layer and the moisture permeation inhibitor layer are provided on the same surface of the base film. The moisture-permeable packaging material according to claim 1.   Both the heat sealant layer and the moisture permeation inhibitor layer are integrally formed by applying polyvinylidene chloride resin on the same surface of the base film, and the heat seal agent layer and the moisture permeation inhibitor layer have an endless pattern. The moisture-permeable packaging material according to claim 1.   A moisture-permeable packaging bag comprising the moisture-permeable packaging material according to claim 1 formed in a bag shape, the heat-sealing agent layer at the periphery being fused. A moisture-permeable packaging bag according to claim 5;
A moisture-permeable packaging body, comprising: a moisture-permeable packaging bag.

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