JP3311833B2 - Antimicrobial laminate, bag, container and molded cup using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial laminate containing an allyl isothiocyanate (AITC) cyclodextrin inclusion compound, and an antibacterial bag, an antibacterial container and an antibacterial molded product using the laminate. About the cup.

[0002]

2. Description of the Related Art Conventionally, storage of fresh foods such as meat and vegetables,
As a packaging material for distribution, a bag with a fastener made of polyethylene film has been used, but this bag has a drawback that it merely blocks food from the outside world and has no antibacterial action. In order to solve this, a substance having an antibacterial action, for example, an antibacterial film to which silver zeolite particles are added has been used. This antibacterial film
The freshness of fresh food is maintained by suppressing the growth of microorganisms that attach to fresh food or adhere and float in the refrigerator and cause decay.

[0003]

However, the antibacterial film to which the silver zeolite particles are added is formed, for example, by molding a synthetic resin material into which silver zeolite particles are kneaded. A part of the silver zeolite dissolves and exudes upon contact with the film, and this adheres to the surface of the enclosed content to cause an antibacterial action. When the material is solid, there is a problem that antibacterial unevenness is likely to occur.

As one of means for solving this problem, it is conceivable to form an antibacterial film by molding a synthetic resin material kneaded with AITC into a film. However, AITC gasifies even if the film does not come into contact with water, and has the advantage of exuding out of the film and mixing with the atmosphere of the enclosed contents to produce an even antibacterial action. , Lacks sustained release,
In addition to not being able to maintain the antibacterial action for a long time,
There is a problem that wasteful release of AITC is likely to accompany. Further, AITC has a boiling point of 151 ° C. and is a liquid at room temperature, and it is generally difficult to mix AITC into a film processed at 200 ° C. or higher.

The present invention has been made in view of the above points, and its object is to provide an excellent antibacterial agent with a sustained release property and to obtain an even antibacterial action, particularly suitable for maintaining freshness of food. Antibacterial laminate, bag using this laminate,
It is to provide a container and a molded cup. The present invention utilizes the inclusion function of cyclodextrin, which is a cyclic oligosaccharide (the property of retaining various molecules in the cavity), and
The present invention solves the above-mentioned conventional problems by being configured to gradually vaporize and release AITC from a cyclodextrin inclusion compound of TC.

[0006]

The antibacterial laminate (film or sheet) according to claim 1 contains water,
Or an antibacterial laminate for food packaging with moisture attached to the surface
There are, and water vapor impermeable substrate film, water vapor transmission
Rate (JIS Z 0208) is 5~40g / m ² · 24
A water vapor permeable film of Hr is laminated via an intermediate layer containing a cyclodextrin inclusion compound of allyl isothiocyanate (AITC).

[0008] The antibacterial laminate according to the second aspect is characterized by the following.
Oite to 1, the intermediate layer, characterized in that an adhesive layer containing a cyclodextrin inclusion compound of AITC.

[0009] Antibacterial laminate according to claim 3, claim
The Oite the intermediate layer 1, and an anchor coating agent layer containing a cyclodextrin inclusion compound of AITC, the base film and the water vapor permeable film was laminated via the anchor coating agent layer by an extrusion lamination method It is characterized by the following.

[0010] Antibacterial laminate according to claim 4, the Oite the base film in claim 1, 2 or 3, it is assumed in which a gas barrier layer on one side, the water vapor transmission and the gas barrier layer Characterized in that the intermediate layer is provided between the conductive layer and the conductive film.

[0011] Antibacterial laminate according to claim 5, Oite to claim 1, 2, 3 or 4, a large number of fine pores in the thickness direction of the water vapor permeable film, and a thickness from the surface It is characterized in that it is formed up to the middle part in the vertical direction.

[0012] The antibacterial bag according to claim 6 contains moisture.
Antibacterial property for food packaging with moisture on the surface
A bag , comprising the antibacterial laminate according to any one of claims 1 to 5 , wherein the bag is formed with the water vapor permeable film on the inner surface side, and food is taken in and out of the bag. The mouth is openable and closable by means of a fastener with uneven fitting.

[0013] Antimicrobial container according to claim 7, consisting of a container body, a removable lid capable of sealing it, the moisture
In water <br/> vapor-impermeable containers for food packaging or moisture adhering to the surface including the lid, in one or both of the inner surface of the container body, claim 1-5 The antibacterial laminate according to any one of the above items is attached with the water vapor permeable film on the inner surface side.

[0014] Antibacterial molded cup as claimed in claim 8 is composed of a cup body made mainly of plastic, the lid of the easy-peel which is welded to the flange portion of the body of water
In a water vapor impervious cup for food packaging containing water or having moisture adhered to the surface, the lid is described in any one of claims 1 to 5 , and It is characterized by comprising an antibacterial laminate having a water vapor permeable film made of a melt adhesive resin or an easy peel resin.

[0015]

The antibacterial laminate according to any one of claims 1 to 5 is cut into appropriate dimensions as it is, for packaging food (or the like).
Alternatively, it is used as a constituent member of an antibacterial bag, an antibacterial container or an antibacterial molded cup for packaging and storing food (or the like) as described in claim 6 , 7 , or 8. The water vapor permeable film is used with the food storage side. In this case, in a state in which food containing water or having water adhered to the surface is not contained, the regeneration of the AITC from the clathrate due to the water does not occur, so that there is no antibacterial effect and the clathrate is consumed. However, when food is contained, moisture from the food permeates through the water vapor permeable film and penetrates into the intermediate layer, and when the clathrate cyclodextrin dissolves in the water, the clathrate compound loses AITC.
Is regenerated and gradually vaporized and released to the food side through the water vapor permeable film, so that a stable antibacterial action can be maintained for a long time. In addition, since a water vapor impermeable base film is provided on the side opposite to the food storage side, water vapor in the outside air and water droplets in the outside world do not seep into the intermediate layer. There is no excessive vaporization and release. As described above, in the above antibacterial laminate, AI
It is excellent in sustained release of TC and can effectively utilize the antibacterial action of AITC. AITC is one of the components of wasabi (wasabi), also called allyl isothiocyanate, and is a volatile liquid compound that is harmless to humans and animals and has an antibacterial action.

In the antibacterial laminate according to any one of the first to fifth aspects, since the water vapor permeability of the water vapor permeable film is set within a predetermined range, the vaporization and release rate of AITC from the clathrate compound becomes appropriate. In addition, the inclusion compound can be used without waste.

In the antibacterial laminate according to the fourth aspect , a gas barrier layer (having a small gas permeability) is provided on the substrate film to make it difficult for outside air to permeate to the food side, so that water vapor in the outside air is reduced to the food side. The ratio of
In addition to preventing unnecessary release of AITC,
Since C does not escape to the outside air via the base film, the effective utilization rate of the clathrate compound increases.

In the antibacterial laminate according to the fifth aspect , the thickness of the film is small in the microporous portion of the water vapor permeable film, and the vaporization and release rate of AITC is higher than in other portions. Therefore, by appropriately setting the pore diameter and the number of pores of the micropores, an antibacterial laminate suitable for the storage period of the food can be obtained. In other words, when used for packaging food with water droplets attached to the surface, the diameter of the micropores is made sufficiently smaller than the size of the waterdrops to prevent the waterdrops from entering the micropores, Rapid release of AITC can be avoided, and the release rate of AITC can be increased as compared with the case where micropores are not provided.

In the antibacterial bag according to the sixth aspect ,
The action of the antibacterial laminate according to any one of claims 1 to 5 is obtained. Further, since the food access opening of the bag body can be opened and closed by the fastener of the concave and convex fitting, it is easy to take in and out the food, and take out a part of the food,
Since the inside of the bag can be shut off from the outside air by the fastener after the food door is closed, the effect of maintaining the freshness of the food remaining in the bag is improved. Furthermore, in this antibacterial bag, since a vapor-impermeable base film is provided on the side that comes into contact with the air, even if the airbag is left in the air in an empty state, vaporization of AITC does not occur. Accordingly, the antibacterial action is not reduced, and the antibacterial action is exhibited only when the food is stored.

[0020] In the antibacterial container according to claim 7 ,
The action of the antibacterial laminate according to any one of claims 1 to 5 is obtained. Further, since the inside of the container can be shielded from the outside air by the lid, the freshness maintaining effect of the food is enhanced as in the bag of the sixth aspect .

[0021] In the antibacterial molded cup according to claim 8 ,
After the food is stored in the cup body, the lid is sealed by welding via a hot melt adhesive resin or an easy peel resin, that is, a water vapor permeable film. Therefore, in the sealed cup, the water vapor permeable film is on the food storage side and the water vapor non-permeable base film is on the outside air side, so that the same action as the antibacterial container according to claim 7 has the same effect. can get.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. Example 1 The antibacterial laminate 11 shown in FIG.
A gas barrier layer 13 as a 3 μm-thick PVDC (polyvinylidene chloride) coat layer is provided on one side of a base film main body 12 which is a T (polyethylene terephthalate) film.
To provide a water-impermeable film K
-A PET base film 14 is formed. And
The base film 14 and a 30 μm thick LDPE (low density polyethylene) water vapor permeable film 17 were combined with AITC cyclodextrin clathrate compound powder 15 (hereinafter abbreviated as clathrate compound 15). The antimicrobial laminate 11 is formed by bonding and laminating with the adhesive layer 16 contained therein. The base film 14 is adhered to the water vapor permeable film 17 via the gas barrier layer 13.

As the adhesive layer 16, a known adhesive used for bonding synthetic resin materials to each other can be used. To obtain a stable function as a laminate,
Laminating adhesives other than aqueous adhesives are preferred.
For this reason, in this embodiment, a two-component curing type dry laminating adhesive such as polyurethane is used as the adhesive layer 16, and its thickness is 2.5 μm. The average particle size of the clathrate compound 15 was 1.0 μm, and the amount added was 10 parts by weight based on 100 parts by weight of the adhesive.

[0024] As the base film body 12, by using a material having a gas barrier property, it is also possible to omit the laminated gas barrier layer 13.

Example 2 An antibacterial laminate 21 shown in FIG.
By providing the gas barrier layer 13 on one surface of a base film main body 22 which is a P (stretched polypropylene) film, a base film 24 of K-OPP which is a water vapor impermeable film is formed. The base film 24 and the water vapor permeable film 17 are bonded and laminated with the adhesive layer 16 to form the antibacterial laminate 21. The K-PET or K-OP
Instead of the P base film, a polyamide film provided with a PVDC coat layer on one surface can also be used.

Example 3 In the antibacterial laminate 31 shown in FIG. 3, a gas barrier layer 33 made of aluminum foil having a thickness of 7 μm was formed on one side of a base film body 32 made of paper having a thickness of 50 μm by a vinyl acetate emulsion. By bonding with an adhesive, a base film 34 that is impermeable to water vapor is formed. The antibacterial laminate 31 is formed by bonding and laminating the base film 34 and the water vapor permeable film 17 which is an easy peel sealant film with the adhesive layer 16.

Example 4 In the antibacterial laminate 41 shown in FIG. 4, the gas barrier layer 33 is further bonded to one side of the gas barrier layer 13 of the base film body 14 with a two-part curable urethane-based adhesive. By doing so, a water-vapor-impermeable base film 44 is formed. The base film 44 and the water vapor permeable film 17 are bonded and laminated with the adhesive layer 16 to form the antibacterial laminate 41.

Embodiment 5 An antibacterial laminate 51 shown in FIG. 5 is provided with a water vapor permeable film 57 instead of the water vapor permeable film 17 in the first embodiment. This water vapor permeable film 57 has a diameter of 5 μm by electric discharge machining or laser opening.
m of micropores 56 in the thickness direction of the film, and to a thickness direction intermediate portion from its surface, 1 cm ² per 50 to 500
It is formed at a rate of 0 pieces. By forming such micropores 56, the amount of AITC vaporized and released per unit time is increased to 1.3 to 3.0 times that in the case where no AITC is provided.

The water vapor permeable film or sealant film can be appropriately selected according to the amount of AITC to be vaporized and released. In particular, the water vapor transmission rate (JIS Z)
0208) is preferably 5 to 40 g / m ² · 24 Hr, and for example, the following are used. That is,
LDPE film with thickness of 20 to 40 μm, thickness of 15 to
30 μm MDPE (medium density polyethylene) film,
Or a linear LDPE film, an ethylene / vinyl acetate copolymer film (vinyl acetate content: 3 to 20%) having a thickness of 25 to 70 μm, or an ethylene / methacrylic acid copolymer film.

In the antibacterial laminate of the present invention, it is more preferable that the substrate film is provided with a gas barrier layer as in the above embodiment, but it is sufficient that the substrate film is impermeable to water vapor. A material film such as a PET film, an OPP film, and a polyamide film can also be used. In addition, a material obtained by appropriately laminating paper or metal foil (such as Al) can be used. The antimicrobial laminate of the above embodiment is obtained by laminating a water vapor impermeable base film and a water vapor permeable film via an adhesive layer containing the inclusion compound. Alternatively, an anchor coat layer containing the clathrate compound may be provided. For example, an anchor coat layer made of urethane resin is provided on the gas barrier layer 13 of the base film 14,
LDPE film and base film 14 immediately after melt extrusion
And by pressure bonding (extrusion lamination)
Antimicrobial laminates can also be formed.

Further, instead of the adhesive layer containing the inclusion compound, a printing layer made of an ink containing the inclusion compound may be provided on the surface of the adhesive layer not containing the inclusion compound, or the gas barrier may be provided. On the surface of the functional layer 13 or 33, a printing layer made of an ink containing the inclusion compound is provided (in this case, the inclusion compound may be blended with the adhesive,
When the printing layer covers almost the entire surface of the base film, the inclusion of the inclusion compound in the adhesive can be omitted. )
be able to. Further, a printing layer may be provided on the surface of the adhesive layer containing the inclusion compound. In any case,
The intermediate layer containing the clathrate compound may be interposed between the water-vapor-impermeable base film and the water-vapor-permeable film.

The antibacterial laminate of the present invention is usually used by molding it into a bag for packaging, but this laminate is cut into a suitable size to obtain a conventional package. It can be enclosed in a bag or attached to the inner surface of a container of various forms. In addition, a laminate in which an adhesive layer containing the clathrate compound is provided on one surface of a water vapor permeable film can be used by being attached to the inner surface of various types of containers via the adhesive layer. In this case, there is an advantage that it is not necessary to apply an adhesive to the inner surface of the container in advance.
Hereinafter, examples of a bag, a container, and a molded cup using the antibacterial laminate of the present invention will be described with reference to the drawings.

Embodiment 6 FIG. 6 is a plan view of an antibacterial bag 71 with a fastener, and FIG. 7 is a sectional view of a main part thereof. As shown in FIG. 7, two pieces of the antibacterial laminate 31 of Example 3 cut into a rectangular shape are prepared, and the fastener pieces 62 are attached to the water vapor permeable film (sealant film) 37 of one of the antibacterial laminates 31. In the vicinity of the end and in parallel with one piece thereof. Further, a fastener piece 63 that can be fitted into the fastener piece 62 with concave and convex portions is provided on the water vapor permeable film 37 of the other antimicrobial laminate 31 and at a position corresponding to the fastener piece 62, as shown in FIGS. A fastener 61 is constituted by the fastener pieces 62 and 63. In FIG. 7, reference numeral 64 denotes a convex locking piece, and 65 denotes a concave locking piece.

In this case, the water vapor permeable film 37 is
An ethylene-methacrylic acid copolymer film, the fastener pieces 62 and 63 are olefin polymers such as LDPE, MDPE, and polypropylene, and the fastener pieces are attached by welding. Then, the two films are superimposed on each other with the concave and convex locking pieces 64 and 65 facing each other, and the outer peripheral end thereof is welded (heat-sealed) to form a square annular seal portion 66 as shown in FIG. The bag body 67 shown in FIG.
A zipper bag 71 is formed by providing a letter-shaped notch 68.

In this embodiment, since the sealing portion 66 is formed by welding ethylene-methacrylic acid copolymer films to each other, the bonding strength can be increased by welding at a relatively low temperature, and the forming operation is simple. Can be done. Further, since the fastener 61 is welded to the ethylene / methacrylic acid copolymer film, even if the fastener 61 is formed of an olefin polymer generally used as a synthetic resin material, the fastener 61 can be mounted at a relatively low temperature and in a short time. It can be carried out. The bag body 71 can be used in the form of an empty bag, or can be used in the form of pre-packaged food (fresh food). In the latter case, after wrapping the food with two films provided with fastener pieces, the bag body 71 is formed.

Next, a method of using the bag body 71 in which food is packaged in advance and its operation will be described. First, the notch 68 is used as a starting point, and the end of the bag body 71 is removed by tearing the longitudinal edge of the fastener 61 as a guide,
The fastener pieces 62 and 63 are released from engagement and the food is taken out. Thereafter, the fastener pieces 62 and 63 are fitted again and resealed.

In the bag 71, water from food permeates through the water vapor permeable film 37 and penetrates into the adhesive layer 16, and when the cyclodextrin of the clathrate compound 15 is dissolved in the water, AITC is regenerated. Since it is gradually vaporized and released to the food side through the water vapor permeable film 37,
A stable antibacterial action can be maintained for a long time. Further, since the water vapor impermeable base film 34 having the gas barrier layer 33 is provided on the side opposite to the food storage side, the water vapor in the outside air is less likely to be mixed into the food side.
Excessive regeneration of the ITC does not occur, and AITC does not escape to the outside air via the base film. In this manner, the bag 71 provides an accurate and stable antibacterial action, that is, an action of maintaining the freshness of the food, not only before the fastener pieces 62 and 63 are unfitted and opened, but also after resealing.

Embodiment 7 FIG. 8 is a schematic sectional view of an antibacterial container 81. This container 8
1 includes a container body 82 made of synthetic resin or cardboard or lightweight metal that is impermeable to water vapor, and a lid 83 made of synthetic resin or the like that can be detachably fitted to the container body 82. This lid 83
Is the antibacterial laminate 11 of Example 1 on the inner surface of the lid body 84.
Is attached with the water vapor permeable film 17 on the inner surface side, for example, using a polyolefin-based hot melt adhesive.

If desired, the antibacterial laminate 11 can also be provided on the inner surface of the container body 82. Instead of the antibacterial laminate 11, an adhesive layer 16 is provided on one surface of a water vapor permeable film 17. Can be attached to the inner surface of the lid body 84 via the adhesive layer 16 (without using an adhesive separately).

Next, test examples using the antibacterial bag of the present invention and comparative examples will be described. [Test Example 1] As the antibacterial bag, a bag 71 shown in Fig. 6 and configured using the antibacterial laminate 31 of Example 3 was used. The dimensions of the food container are 23 cm long and 13 cm wide. The antibacterial bag was opened, two commercially available cut rice cakes were put as food, resealed, left in the air at room temperature, and the occurrence of mold over time was observed.

Comparative Example 1 As an antibacterial bag with a fastener, K-
A laminate made of a PET film and a 30 μm-thick polyethylene film (without inclusion compound) and a laminate made of a 50 μm-thick polyethylene film (without inclusion compound) were used. The shape and size of the antibacterial bag and the structure of the fastener are the same as those in Test Example 1. The antibacterial bag was opened, and as in Test Example 1, two commercially available cut rice cakes were put in as foods, resealed, left side by side with the cut rice cake-containing bag of Test Example 1, and the occurrence of mold over time was observed. did.

FIG. 9 shows the results. Mold was generated on the cut rice cake 2 days after the start of the test and 3 days after the test for the bag. On the other hand, in the bag of Test Example 1, 10
No mold was found even after the day, and the antifungal effect was confirmed.

Embodiment 8 FIG. 10 is a schematic sectional view of an antibacterial molding cup 91. The molding cup 91 is made of plastic such as PET or PP / PVOH (polyvinyl alcohol) / PP
A cup body 92 mainly composed of (laminated body);
This is a steam-impermeable cup comprising an easy peel lid 94 welded to the second flange 93. The sectional structure of the lid 94 is as shown in FIG.
7 μm on one side of the base film main body 95 which is a paper having a thickness of 7 μm.
By bonding a gas barrier layer 96, which is an aluminum foil having a thickness of m, with a vinyl acetate emulsion adhesive 97, a base film 98 that is impermeable to water vapor is formed. Then, the base film 98 and a water vapor permeable film 99 made of a hot melt adhesive are bonded and laminated with the adhesive layer 16 to form an easy peel lid 94 made of an antibacterial laminate. is there. In this molded cup 91, after the food F is accommodated in the cup body, the lid 94 is placed via an adhesive, that is, a water vapor permeable film 99.
Is welded to the flange 93 and sealed.

[0044]

As is clear from the above description, claims 1 to
The antibacterial laminate according to 3 is used with the water vapor permeable film surface facing the content of food or the like, and water from food permeates through the water vapor permeable film into the intermediate layer. However, since AITC regenerated from the clathrate passes through the water vapor permeable film and is gradually vaporized and released to the food, a stable antibacterial action can be maintained for a long time. In addition, since a water vapor impermeable base film is provided on the side opposite to the food storage side, there is no wasteful release due to excessive regeneration of AITC, excellent sustained release of AITC, and effective antibacterial action of AITC. There is an effect that can be used for Furthermore, since the water vapor transmission rate of the water vapor permeable film was set within a predetermined range, the AITC
And the clathrate can be used without waste. According to the antibacterial laminate according to claim 4, a gas barrier layer is provided on the base film so that the outside air is hardly transmitted to the food side.
The rate at which water vapor in the outside air mixes with the food is reduced, and the effect of maintaining the freshness of the food is further enhanced. In addition, since the escape of AITC to the outside air is prevented, the effective utilization rate of the clathrate compound is increased. According to the antibacterial laminate according to the fifth aspect , by providing an appropriate number of micropores having an appropriate pore diameter in the water vapor permeable film, an antibacterial laminate having an AITC release rate suitable for the storage period of food or the like can be obtained. be able to. According to the antibacterial bag of the sixth aspect , the effect of the antibacterial laminate of any one of the first to fifth aspects can be obtained. In addition, since the fastener can be opened and closed by a fastener with concave and convex fittings, it is easy to take in and out the food, and after the part of the food is taken out and resealed, the inside of the bag can be shut off from the outside air by the fastener. The effect of maintaining the freshness of food remaining in the body is increased. Further, even if the antibacterial bag is left empty in the air, the antibacterial action does not decrease with time. According to the antibacterial container according to claim 7, claim 1
The effects of the antibacterial laminate according to any one of the above items 5 to 5 can be obtained. Further, since the inside of the container can be shielded from the outside air by the lid, the effect of maintaining the freshness of the food is enhanced as in the bag of the sixth aspect . According to the antibacterial molding cup as claimed in claim 8, water vapor permeable film in forming cup after sealing is on the food receiving side, since vapor impermeable substrate film is on the outside air side, to claim 7 The same effect as the antibacterial container described can be obtained. As described above, in the antibacterial laminate, the antibacterial bag, the antibacterial container and the antibacterial molded cup of the present invention, the antibacterial effect does not occur when the food having moisture is not contained (the waste of the clathrate compound is not consumed. ), After the food is stored, the clathrate compound is effectively used, which has the effect of being stable for a long period of time, and having the effect of preserving the fresh food having a high moisture content with good freshness. It has the characteristics described above.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the antibacterial laminate of the present invention.

FIG. 2 is a schematic sectional view showing another embodiment of the antibacterial laminate.

FIG. 3 is a schematic sectional view showing still another embodiment of the antibacterial laminate.

FIG. 4 is a schematic sectional view showing still another embodiment of the antibacterial laminate.

FIG. 5 is a schematic sectional view showing still another embodiment of the antibacterial laminate.

FIG. 6 is a schematic plan view showing an embodiment of the antibacterial bag of the present invention.

FIG. 7 is an enlarged sectional view of a main part of FIG. 6;

FIG. 8 is a schematic sectional view showing an embodiment of the antibacterial container of the present invention.

FIG. 9 is an explanatory diagram showing the results of a test example and a comparative example of the present invention.

FIG. 10 is a schematic sectional view showing an embodiment of the antibacterial molded cup of the present invention.

FIG. 11 is a partially enlarged cross-sectional view of the lid in the embodiment shown in FIG. 10;

[Explanation of symbols]

 11, 21, 31, 41, 51 Antibacterial laminate 12, 22, 32, 95 Base film body 13, 33, 96 Gas barrier layer 14, 24, 34, 44, 98 Base film 15 Inclusion compound 16 Adhesion Agent layer 17, 37, 57, 99 Water vapor permeable film 56 Micropore 61 Fastener 62, 63 Fastener piece 64 Convex locking piece 65 Concave locking piece 66 Sealing part 67 Bag body 68 Notch 71 Bag body 81 Container 82 Container body 83, 94 Lid 84 Lid main body 91 Molded cup 92 Cup main body 93 Flange 97 Adhesive

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Satoshi Fukaya 4-14-12 Koishikawa, Bunkyo-ku, Tokyo Inside the Printing Co., Ltd. (72) Kenichi Ishii 4- 14-12 Koishikawa, Bunkyo-ku, Tokyo (56) References JP-A-7-16976 (JP, A) JP-A 5-16663 (JP, U) JP-A 4-124099 (JP, U) JP-A 5-41773 ( JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B32B 1/00-35/00

Claims (8)

(57) [Claims] 1. Contains or contains moisture
An antibacterial laminate for food packaging, comprising: a base film impermeable to water vapor; and a water vapor transmission rate (JISZ020).
8) is 5 to 40 g / m ² · 24Hr with a water vapor permeable film, and allyl isothiocyanate (AITC)
An antimicrobial laminate, wherein the laminate is laminated via an intermediate layer containing the cyclodextrin clathrate. 2. The antibacterial laminate according to claim 1, wherein the intermediate layer is an adhesive layer containing a cyclodextrin inclusion compound of AITC. 3. The intermediate layer is an anchor coat agent layer containing a cyclodextrin inclusion compound of AITC,
The antibacterial laminate according to claim 1, wherein the base film and the water vapor permeable film are laminated via the anchor coat agent layer by an extrusion lamination method. 4. The substrate film according to claim 1, wherein a gas barrier layer is provided on one side, and the intermediate layer is provided between the gas barrier layer and the water vapor permeable film. 4. The antibacterial laminate according to item 2, 2 or 3 . 5. A large number of micropores in the water vapor permeable film in its thickness direction, and claims 1, 2, 3 or, characterized in that formed to a thickness direction of the intermediate portion from the surface
5. The antibacterial laminate according to 4 . 6. Moisture is contained or moisture adheres to the surface.
An antibacterial bag for food packaging , comprising: using the antibacterial laminate according to any one of claims 1 to 5 , with the water vapor permeable film on the inner surface side to form a bag. An antibacterial bag, wherein the food inlet / outlet of the bag can be opened and closed by a fastener with concave and convex fittings. 7. A container comprising a container main body and a detachable lid capable of sealing the container main body, the container body containing water or having water on its surface.
In a steam-impermeable container for food packaging attached ,
The antibacterial laminate according to any one of claims 1 to 5 , which is attached to an inner surface of one or both of the lid and the container body, with the water vapor permeable film facing the inner surface. Antibacterial container. 8. A water-containing or surface-moisture-containing cup body mainly composed of plastic and an easy-peel lid welded to a flange portion of the body .
In a steam-impermeable cup for food packaging worn ,
The lid according to any one of claims 1 to 5 , wherein the lid is made of an antibacterial laminate having a water vapor permeable film made of a hot melt adhesive resin or an easy peel resin. Antibacterial molded cups.