JPH04279468A - Deoxidizing agent package - Google Patents

Abstract

PURPOSE:To provide deoxidizing agent package which is extremely easy to preserve and permits the deoxidizing performance immediately after manufacture to be always repeated. CONSTITUTION:A method for packaging and sealing deoxidizing agent comprising using wholly or partly a gas-impermeable packaging material C formed by temporarily attaching a packaging material A having a Gurley permeability of 1-10000sec/100ml and at least one layer of a gas-barrier laminate film B by a specific method and packing the deoxidizing agent in the packaging material with its laminate film B outside.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to an oxygen absorber package, and more specifically, a gas-impermeable package made by temporarily adhering a packaging material (A) and a laminated film (B) using a specific processing method. The oxygen absorber packaging material (C) is used as all or part of the oxygen absorber packaging material, and the oxygen absorber is packaged and sealed with the (B) side of the packaging material facing outward. The present invention relates to an oxygen absorber package. The present invention can be used in a wide range of applications as a preservative, since it is extremely easy to store the oxygen absorber package for a long period of time, and the oxygen absorbing performance immediately after production can always be reproduced.

0002

[Prior Art] Oxygen scavengers are compositions that have the property of absorbing zero elements, and are usually stored in air-permeable sachets and sealed in bags made of gas-barrier packaging material. Ru. In general, packaging materials constituting a breathable pouch that encloses an oxygen absorber include, for example, a packaging material made by laminating paper and a perforated polyethylene film, and a packaging material made by laminating and bonding a perforated plastic film, paper, and a perforated polyethylene film. ,
Packaging materials using nonwoven fabrics, microporous membranes, etc. are used, and many documents related to these materials are known. As prior art related to the present invention, in JP-A-2-71814 and JP-A-2-128676, the surface of an air-permeable packaging material containing an oxygen scavenger composition is covered with a non-air-permeable packaging material. A technique related to an oxygen absorber package in which the oxygen absorbing function works by peeling off the breathable material has been disclosed.

0003

[Problems to be Solved by the Invention] A problem with food preservation technology using oxygen absorbers is that oxygen absorbers are made by enclosing a composition that has the property of absorbing oxygen in a breathable pouch;
Oxygen absorbers are stored in sealed bags made of gas-barrier packaging material and opened immediately before use; however, oxygen scavengers begin to deoxidize immediately after opening and are left exposed to the atmosphere. The deoxidizing ability decreases in proportion to time, and the working time after opening is limited. Therefore, it is difficult to use it occasionally when needed at home, so its use has been limited to commercial use such as food manufacturers who use large amounts of oxygen absorbers at once. In addition, a decrease in oxygen scavenging performance was observed during the production process and storage period of the oxygen scavenger, making long-term storage not only difficult but also requiring skill in handling.

[0004] As one of the solutions to these problems, the above-mentioned prior art is known, but in JP-A-2-71814, films such as PE, PP, and polystyrene are exemplified as breathable packaging materials. However, although these films are not barrier films, their gas permeability is so low that they cannot be put to practical use, and since non-barrier films such as polyester and nylon are used as non-breathable packaging materials, they are susceptible to desorption during storage. There was a decrease in oxygen performance, and the performance was not fully satisfactory. Also, JP-A-2-1
In No. 28676, a paper-based material is used as the breathable packaging material, and a non-barrier film such as PP, nylon, polyester, etc. is used as the non-breathable packaging material, so the performance of the oxygen absorber is greatly reduced during storage. Therefore, both of them are not fully satisfactory in terms of performance and lack practicality.

The present invention solves these technical problems and provides a bag that is easy to manufacture and form, has stable air permeability,
Not only does it have seal strength and lamination strength, but there is no need to reseal the oxygen absorber package with a bag made of gas barrier packaging material, making it extremely easy to store and manufacture. It is an object of the present invention to provide an oxygen absorber package having a stable oxygen absorbing performance that can always reproduce the oxygen absorbing performance immediately after use.

[0006]

[Means for Solving the Problems] As a result of intensive research to achieve the above object, the present inventors did not adopt paper-based materials for breathable packaging materials, but limited the packaging material composition to thermoplastic films only. Furthermore, the non-breathable packaging material is limited to a barrier film, and a gas-impermeable packaging material for oxygen scavenger (C) is prepared by temporarily adhering the packaging material (A) and the laminated film (B).
) can be temporarily bonded by forming a temporary bonded layer in a pattern or fine mesh pattern on the surface of the laminated film (B) by extrusion laminating, printing or coating with a resin or adhesive on the surface of the laminated film (B), or PE pattern lamination method, partial lamination method, etc. in which the water-impermeable nonwoven fabric or microporous membrane of A) and the laminated film (B) are partially melted under normal pressure and laminated to form a temporarily bonded layer. The oxygen absorber packaging material (C) obtained by adopting a specific temporary adhesion method is used as all or a part of the oxygen absorber packaging material, and the laminated film (B) constituting the packaging material is The oxygen absorber package, in which the oxygen absorber is packaged and sealed with the surface facing outward, is not only easy to manufacture and form bags, but also the oxygen absorber package can be made of a packaging material with gas barrier properties. The oxygen absorber package has excellent features such as no need to seal it with a bag, extremely easy storage of the oxygen absorber package, and stable oxygen scavenging performance that can always reproduce the oxygen scavenging performance immediately after production. They found that this is the case, and completed the present invention.

[0007] The present invention combines the following packaging material (A) and a laminated film (B) into a patterned or A laminated film (B) with a nonwoven fabric or microporous membrane that does not allow water to pass through under normal pressure of the packaging material (A), which forms a temporarily bonded layer (X) in the form of a fine mesh.
A gas-impermeable oxygen absorber packaging material (C) obtained by partially melting and laminating to form a temporarily bonded layer (X) is added to all or part of the oxygen absorber packaging material. This is an oxygen absorber package characterized in that the oxygen absorber is packaged and sealed with the (B) side of the packaging material facing outside.

Packaging material (A): Gurley air permeability is 1~
10,000 seconds/100 ml non-woven fabric made of polyethylene or polypropylene that does not allow water to pass through at normal pressure, or a microporous membrane that does not allow water to pass through at normal pressure and has micropores with a pore size of 0.01 to 30 μm made of polyethylene or polypropylene. A packaging material in which a perforated plastic film, microporous membrane, or nonwoven fabric is laminated as a sealing layer on the inside of the packaging material, or a resin is formed into a large number of stripes or meshes by extrusion lamination or coating. , Laminated film (B): Oxygen gas permeability is 20cc/m2・24hr・atm/25
A thin layer film with gas barrier properties consisting of one or more layers of plastic film or metal foil with a thickness of μm or less,

The present invention will be explained in detail below. In the present invention, the packaging material (A) has a Gurley air permeability of 1 to 1.
10,000 seconds/100 ml non-woven fabric made of polyethylene or polypropylene that does not allow water to pass through at normal pressure, or a microporous membrane that does not allow water to pass through at normal pressure and has micropores with a pore size of 0.01 to 30 μm made of polyethylene or polypropylene. A perforated plastic film, a microporous membrane, or a nonwoven fabric is laminated as a sealing layer on the inside of the packaging material, or a resin is laminated into a large number of stripes or fine meshes by extrusion lamination, printing, or coating. It is a laminated film formed by. Also,
If necessary, a reinforcing material such as warif may be used to reinforce the packaging material (A).

[0010] The above-mentioned nonwoven fabric is a nonwoven fabric made of polyolefin, and the Gurley air permeability is usually about 0.0.
1 to 1,000 seconds/100 ml, and does not allow water to pass through at normal pressure. For example, Tyvek (manufactured by DuPont) and Luxar (manufactured by Asahi Kasei Corporation) are known. Note that a polyester nonwoven fabric can also be used.

The above-mentioned plastic film, which is a microporous membrane, has micropores with a pore diameter of 0.01 to 30 μm and a Gurley air permeability of about 0.01 to 1,000.
sec/100ml and does not allow water to pass through at normal pressure. The microporous membrane is manufactured by stretching a synthetic resin film such as polyethylene or polypropylene, but at that time, fine powders such as silica, talc, calcium carbonate, etc. are added and the film is stretched to form a film containing fine powders. It is manufactured by a method such as extracting fine powder from. For example, NF sheet (manufactured by Tokuyama Soda Co., Ltd.), Poram (
Tokuyama Soda Co., Ltd.), Cellpore (Sekisui Chemical Co., Ltd.)
Co., Ltd.), FP-2 (manufactured by Asahi Kasei Industries Co., Ltd.),
NOP (manufactured by Nippon Petrochemical Co., Ltd.), Nitoflon NTF
(manufactured by Nitto Electric Industry Co., Ltd.), Polyflon paper (
Known examples include Duraguard (manufactured by Celanese), Goretex (manufactured by Gore), and the like.

[0012] The perforated plastic film used as the inner sealing layer may be made of, for example, a low melting point material such as polyethylene, ethylene-vinyl acetate copolymer, or ionomer resin, which has a softening point equal to or lower than that of the nonwoven fabric or microporous membrane. The sealant film is heat laminated. For example, polyethylene, ethylene-vinyl acetate copolymer, ionomer resin, polypropylene are used as resins that form adhesive layers in the form of many stripes or fine networks by extrusion lamination, printing, coating, etc. etc., and one or more of these may be used. Usually, these resins are applied in the form of a large number of stripes or fine meshes to form an adhesive layer by extrusion lamination processing when melted at about 300°C or coating when melted at about 200°C.

[0013] The resin portion formed in the form of a large number of streaks or fine meshes thus formed not only serves to reinforce the packaging material and adjust the air permeability, but also functions as a sealing layer during bag making. Sealing methods include heat sealing, adhesive sealing, and the like. The adhesive strength of the packaging material for an oxygen scavenger in the present invention during bag making varies depending on the type, thickness, amount of resin, heat sealing conditions, etc. of the sealant film and the resin formed in a large number of streaks or fine meshes. In particular, if the amount of resin is extremely small, the adhesive strength will be insufficient and it will not be usable. On the other hand, if the amount is too large, it is difficult to ensure sufficient air permeability.

[0014] The laminated film (B) has an oxygen gas permeability of 20cc/m2, 24hr, and atm/25.
μm or less, preferably 10cc/m2・24h
A gas barrier thin film having a thickness of 7 to 200 μm, preferably 12 to 50 μm, which is a plastic film or metal foil having a thickness of r.atm/25 μm or less, and is composed of one or more layers selected from these. It is. Such packaging materials include plastic films laminated or coated with polyvinyl alcohol, ethylene vinyl alcohol copolymer, polyvinylidene chloride, etc., plastic films with gas barrier properties imparted by metal vapor deposition, etc., and metal foils such as aluminum. .

[0015] The laminated film (B) has an oxygen gas permeability of 20cc/m2・24hr・atm/2
If it is 5 μm or more, the gas barrier properties are insufficient and it is difficult to store the oxygen scavenger, making it impossible to achieve the purpose of the present invention.
In particular, when considering long-term storage of the oxygen absorber, processability of the packaging material, etc., it is desirable to use a metal foil with perfect gas barrier properties. On the other hand, the film thickness is 7μm
If it is less than 200 μm, it is not only difficult to process because it is too thin, but also has poor durability, and if it is more than 200 μm, the film lacks flexibility, which is undesirable.

[0016] Gas-impermeable packaging material for oxygen scavenger (C) made by temporarily adhering the packaging material (A) and the laminated film (B).
The production method uses a resin having a softening point equal to or lower than those of (A) and (B), such as polyethylene,
Using one or more resins selected from ethylene-vinyl acetate copolymer, ionomer resin, polypropylene resin, etc., these are melted at about 120 to 200 ° C., and printing processing such as gravure printing and coating methods are used. (A) and (B) are laminated using a temporary adhesive layer, or the surface (B) is bonded using a similar method. (A) and (B) by fusion, adhesion, pressure bonding, dry lamination, etc. using an adhesive applied in a pattern or fine mesh on the top.
) is obtained by the PE pattern lamination method. In addition, gas-impermeable packaging material for oxygen scavenger (C)
Another manufacturing method is partial lamination, in which the packaging material (A), a nonwoven fabric or microporous membrane that does not pass water under normal pressure, and the laminated film (B) are partially melted and laminated to form a temporary adhesive layer. A layer temporarily bonded by a method may also be formed.

[0017] Thus, the temporarily bonded layer (X) formed on the surface (B) by the PE pattern lamination method is (
Since it is set to be firmly adhered to side B) and temporarily adhered to side (A), immediately before using the oxygen absorber, the packaging material of the oxygen absorber package (C ) configures (
By peeling off B), the temporarily bonded layer remains attached and peeled off on the surface of (B). Therefore, since the temporarily bonded layer does not remain on the surface of the packaging material (A), not only does the gas permeability of the packaging material (A) remain unchanged, but also part of the temporarily bonded layer peels off and mixes into the food. It is hygienic as it does not touch the food directly.

The temporarily bonded layer (X) formed in a pattern or a fine mesh pattern on the surface of (B) used in the present invention is determined by the type and shape of the resin or adhesive, the adhesive strength, It is appropriately determined in consideration of various factors such as packaging sealability and ease of bag making. That is, the amount of resin and adhesive that will become the temporarily bonded layer is 7 to 70 g/m2, preferably 10 g/m2.
~50g/m2, and the area of the resin part or adhesive part formed in a pattern or fine mesh is 30~50g/m2 of the total area.
At 90%, the distance between unapplied parts between resins or adhesives formed in a pattern or fine mesh is 500 μm
The following is desirable. If the amount of resin or adhesive is too small, or if the spacing between resins or adhesives is too large, adhesive strength and sealing performance will decrease. In addition, if the amount of resin or adhesive is excessive, it will be difficult to apply a temporary bonded layer in a uniform pattern or fine mesh, resulting in uneven adhesive strength and excessively high temporary bonding. It is unsuitable as a layer.

A part of the layer in which the packaging material (A) and the laminated film (B) constituting the oxygen absorber packaging material (C) of the peripheral seal portion of the oxygen absorber package of the present invention are temporarily bonded. The oxygen absorber package from which the oxygen absorber has been peeled off in advance is
In the processing step of C), a method in which a temporarily bonded layer is not formed in a pattern in the part corresponding to the partially peeled part, and when the oxygen absorber packaging material (C) is slit, the peripheral part of the packaging material is formed into a band-like part. A method of peeling off the oxygen absorber, or a method of partially peeling off the periphery, corners, etc. of the oxygen absorber at the time of filling the oxygen absorber. Partial peeling, in which a part of the temporarily bonded layer is peeled off in advance, is performed when the packaging material of the oxygen absorber package (A
) is intended to improve workability by making peeling easier. However, during the production, storage, and distribution of the oxygen scavenger package, the temporarily bonded layer peels off from the partially peeled part, causing deterioration in oxygen scavenging performance. Since there is a concern about deterioration, the area of the partially peeled portion may be the minimum necessary to allow easy peeling. It is desirable that the partial peeling of the temporary adhesive layer at the peripheral sealing part of the oxygen absorber package is 1/3 or less, preferably 1/10 or less of the seal width of the peripheral sealing part. Moreover, in partial peeling, it is desirable to peel off a part of the temporarily bonded layer between the temporarily bonded layer and the laminated film (B) in advance.

[0020] The present invention provides the packaging material (C) for the oxygen absorber.
is used as all or part of the packaging material for the oxygen absorber,
This is an oxygen absorber package in which the oxygen absorber is packaged and sealed with the (B) side of the laminated film constituting the packaging material facing outward, and the oxygen absorber package is packaged with the (B) side immediately before use. It is used after peeling off. The oxygen absorbers packaged here include those containing sulfite, bisulfite, dithionite, hydroquinone, catechol, resorcinol, pyrogallol, gallic acid, metal powder such as iron powder, ascorbic acid, etc. .

[0021] An oxygen absorber package in which the oxygen absorber is packaged and sealed using the oxygen absorber packaging material (C) as a part of the oxygen absorber packaging material is a Packaging materials for (C
) is used in some cases in combination with other packaging materials, but the other packaging material used here is a laminated film consisting of one or more layers with gas barrier properties, which is the same packaging as the aforementioned laminated film (B) used in the present invention. materials etc. are used. In this case, the sealing layer during packaging is the oxygen absorber packaging material (C
) is sealed using a sealing layer. In addition, if a sealing layer is provided by forming a resin layer on the innermost side of another packaging material (laminated film (B)) using exactly the same method as for producing the oxygen absorber packaging material (C), A packaging material having the same structure as the pharmaceutical packaging material (C) except for the sealing layer is used.

[0022]

[Operation] The present invention packages an oxygen absorber using a laminated film in which a gas barrier packaging material is temporarily bonded to the outside of a breathable packaging material, and then removes the temporarily bonded gas barrier film layer. Since the oxygen absorber is peeled off immediately before use, there is no deterioration in the oxygen scavenging performance of the oxygen absorber during storage, and it can be used with the oxygen scavenging performance maintained at the time of manufacture. In addition, since the oxygen scavenger is used by peeling off the temporarily bonded gas barrier film layer one by one immediately before use, there is almost no contact with the air, and even general users such as households can always maintain the oxygen scavenging performance during manufacturing. It can be used while holding. If you find it troublesome to peel off the gas barrier film layers that have been temporarily bonded one by one just before use, you can make the work easier by using a continuous packaging type and using an oxygen scavenger at the same time as peeling off the gas barrier film layers. It is also possible to improve

[0023] In the present invention, compared to the case where a low melting point laminate film is laminated over the entire surface to form an adhesive layer, it is difficult to peel off the film layer, the laminate film (B) and the packaging material (A) are easily separated. As the temporarily bonded layer between the two is partially bonded by a specific PE pattern lamination or partial lamination method, it is easy to peel off the temporarily bonded gas barrier film layer (laminated film (B)). Yes, oxygen scavenger can be used immediately.

On the other hand, an oxygen absorber package in which an oxygen absorber is packaged using a laminated film (packaging material for an oxygen absorber (C)) to which a laminated film (B) is temporarily bonded is not stored for a long period of time. In this case, there is a concern that the deterioration of the oxygen absorber may progress not from the surface of the packaging material but from the cross section, and the temporarily bonded layer and the packaging material (A) are made of a packaging material with poor gas barrier properties. Not only is the thickness of the packaging material thin and the sealing width when making the oxygen absorber bag is wide, but the temporary adhesive layer formed by PE pattern lamination, partial lamination, etc. is laminated in a continuous pattern. Therefore, gas permeation through the cross section is not only negligible, but also due to the packaging material (
As for A), we do not use materials such as paper, but only use thermoplastic film, and melt the seal part of the packaging material (A) during heat sealing in the oxygen absorber packaging manufacturing process to release gas from the cross section. By adopting a configuration in which transmission can be almost ignored, long-term storage becomes possible. Therefore, in the present invention, after the laminated film (B) is peeled off, the packaging material (A) retains its original properties such as air permeability, durability, and bag formability, so it can be used for a long time. An oxygen absorber package that can exhibit stable oxygen absorbing performance even after being stored for a period of time can be obtained.

[0025]

EXAMPLES The present invention will be explained in more detail with reference to Examples and Comparative Examples. However, the scope of the present invention is not limited to these Examples in any way. (1) Preparation of packaging material samples and comparison packaging material samples

00
26] Sample-1 PET (thickness: 12 μm
PET film) and aluminum foil (thickness: 15μ
Low-density polyethylene heated and melted at about 150°C is coated onto the Al side of the laminated film (B) laminated with M (hereinafter abbreviated as Al) using a gravure coat roll at a speed of about 100 m/min. A laminated film transferred in the form of a sample: sample b (1) was prepared. Next, the sample-
b(1) and Tyvek 1059B (manufactured by DuPont, polyethylene nonwoven fabric) were thermally laminated at 90 to 100°C to form a temporary adhesive layer of low density polyethylene. (abbreviated as PE pattern laminate) Next, Tyvek 1059
B (previously) Low density polyethylene with holes on the surface (B holes)
A packaging material: Sample 1 was prepared by thermally laminating the following at 90 to 100°C.

Sample-2 In the manufacturing process of Sample-1, Poram (manufactured by Tokuyama Soda Co., Ltd.,
A packaging material: Sample-2 was prepared by laminating a PE microporous membrane (25 μm thick) in exactly the same manner as Sample-1, except that it was thermally laminated at 90 to 100°C.

Sample-3 In the manufacturing process of Sample-1, Tyvek 1059B (described above) was used instead of perforated low-density polyethylene (B holes).
On the surface, low-density polyethylene, which is a resin having a softening point equal to or lower than that of Tyvek 1059B, is heated and melted at about 260°C, and is formed into many stripes from the pores of an extrusion processing device at a speed of about 100 m/min. Extruded and laminated sample-3
was created.

Sample-4 PET (described above), PE (low density polyethylene film with a thickness of 16 μm), and Al were thermally laminated at 100 to 120°C on the Al side of the laminated film (B) at about 150°C. Laminated film in which heated and melted low-density polyethylene was transferred in a mesh pattern at a speed of about 100 m/min using a gravure coat roll: Sample-b (2)
made. Next, sample-b(2) and Luxar H1
059 (Asahi Kasei Industries, Ltd., polyethylene nonwoven fabric)
and heat laminated at 90 to 100℃ to form a temporary adhesive layer of low-density polyethylene (abbreviated as PE pattern laminate).
Packaging material: Sample-4 was prepared.

Sample-5 In the manufacturing process of Sample-1, Tyvek 1059B
(previously), NF sheet S-140 (manufactured by Tokuyama Soda Co., Ltd., PP microporous membrane with a thickness of 140 μm)
Sample-1 except for thermal lamination at 0 to 100°C.
A laminated packaging material: Sample-5 was prepared in exactly the same manner.

Sample-6 NF sheet 120 (manufactured by Tokuyama Soda Co., Ltd., thickness 120
microporous PP membrane) and nonwoven fabric (basis weight: 30 g/m2
The NF sheet 120 side of the NF sheet 120 side of the laminated film (sample-a(1)) heat-laminated at 90 to 100 °C (polyethylene nonwoven fabric) was combined with the Al of the laminated film (B) prepared in the manufacturing process of sample-1. te, 100-12
Laminated into a fine mesh pattern at a temperature of 0°C (a processing method that belongs to electret processing, abbreviated as partial lamination)
Packaging material: Sample-6 was prepared.

Sample-7 In the manufacturing process of sample-6, a laminated film (sample-a
(1) ) instead of NF sheet 120 (mentioned above),
Nisseki Warif SS (manufactured by Nisseki Goju Products Co., Ltd., basis weight: 1
Sample-6 was used except that a laminated film (Sample-a(2)) obtained by thermally laminating 9g/m2 polyethylene nonwoven fabric) and perforated low-density polyethylene (B holes) (described above) at 90 to 100°C was used. A packaging material: Sample 7 was prepared using exactly the same method.

Sample-8 In the manufacturing process of Sample-1, K-Ny (thickness: 30 μm) was used instead of the laminated film (B) (Sample-b(1)).
A laminated film of a polyvinylidene chloride coated nylon film (sample-b(4)) is heat laminated with PE (low-density polyethylene film with a thickness of 16 μm) at 90 to 100°C: a laminated film of sample-b(3) is used. Except for this, a laminated packaging material: Sample-8 was produced in exactly the same manner as Sample-1.

Sample-9 In the manufacturing process of sample-6, instead of the laminated film (B) (sample-b(1)), a laminated film (sample-b) was used.
(2) A laminated packaging material: Sample-9 was produced in exactly the same manner as Sample-1, except for using Sample-1.

Sample-10 In the manufacturing process of Sample-1, instead of the laminated film (B) (Sample-b(1)), a laminated film of K-Ny (described above): Sample-b(4) was used. Sample-1 except that
Packaging material laminated in exactly the same manner as: Sample-1
0 was created.

Sample-11 PET (thickness: 12 μm
Approximately 15 lbs.
A laminated film: Sample-b(1) was prepared by transferring low-density polyethylene heated and melted at 0° C. into a mesh pattern at a speed of about 100 m/min using a gravure coating roll. Next, Sample-b(1) and Tyvek 1073 (manufactured by DuPont, polyethylene nonwoven fabric) were heated at 90 to 100°C.
A packaging material: Sample 11 was prepared by thermally laminating the packaging material using low-density polyethylene as a temporary adhesive layer.

Sample-A PET (mentioned above) and
Al of the laminated film laminated with Al (mentioned above)
A packaging material: Sample-A was prepared by extrusion laminating PE (described above) to a thickness of 40 μm on the surface.

Sample-B In the manufacturing process of Sample-1, a packaging material: Sample-B was prepared by extrusion laminating PE (described above) to a thickness of 40 μm on the K-Ny (described above) surface.

Comparative Samples-1, 2, 3 In the manufacturing process of Sample-1, the thickness of the aluminum foil of the laminated film (B) (Sample-b(1)) was changed to 15 μm.
The thickness was changed from 6 μm to 250 μm (sample-b (4
), sample-1 except that sample-b(5) ) was used.
Packaging material laminated in the same manner as: Comparative sample-1
, Comparative sample-2 was prepared. In addition, in the manufacturing process of Sample-1, PP was used instead of the laminated film (B) (Sample-b(1)) in which PET and aluminum foil were laminated.
(Thickness: 20 μm PP film) (Previously) Laminated film (B) obtained by extrusion lamination (Sample-b (6)
)) A laminated packaging material: Comparative Sample Material-3 was prepared in the same manner as Sample-1 except that the following was used.

Comparative sample-4 Tyvek 1059B (mentioned above) and perforated low-density polyethylene (B hole) (stated above) are thermally laminated at 90°C to 90°C. Comparative Sample-4 was prepared by combining the following materials and laminating the entire surface at a temperature of 100 to 120°C.

Comparative Sample-5 In the manufacturing process of Sample-3, the thickness of the aluminum foil was changed to 1 in place of the laminated film (B) (Sample-b(1)).
Laminated film (B) whose thickness was changed from 5 μm to 6 μm (
A laminated packaging material: Comparative Sample-5 was prepared in exactly the same manner as Sample-3, except that Sample-b(7)) was used.

Comparative Samples-6, 7, 8 In the manufacturing process of Sample-1, Tyvek 1059B
(mentioned above) and perforated low-density polyethylene (B holes) (stated above) were replaced with packaging materials that were thermally laminated at 90 to 100°C, and NF sheet 120 (stated above) and mixed paper (made of paper and polyethylene) were used. Basis weight: 30g/m2 non-woven fabric)
Laminated film (B) (sample-b(8)), or WOP
Laminated film (B) (sample-b) consisting of paper (water- and oil-resistant treated paper with basis weight: 40 g/m2), Nisseki Warif SS (previously), and perforated low-density polyethylene (B holes) (previously)
Packaging materials laminated in exactly the same manner as Sample-1 except for using (9)): Comparative Sample-6, Comparative Sample-
7 was produced. In addition, the laminated film (B) (sample-b (
A packaging material using only 9)) was designated as Comparative Sample-8. Tables 1 and 2 summarize the contents of each packaging material sample and comparative sample prepared above.

(2) Packaging material test Oxygen gas permeability, air permeability, temporary adhesion strength, heat sealing strength, workability, and bag making properties were determined for each of the packaging material samples prepared in the above (1) and comparative samples. etc. were measured. The measurement results are shown in Tables 3 and 4.

(3) Preparation and performance test of oxygen absorber package Using the packaging material samples 1 to 13 and comparative samples 1 to 8 prepared in the above item (1), the laminated film (B) was placed on the outside. Then, a bag of 50 x 50 mm was made into a packaging material, and an oxygen absorber containing iron powder as a main ingredient and having an oxygen absorption capacity of 100 ml was filled to produce an oxygen absorber package of the present invention. Next, the laminated film (B) was peeled off, and each oxygen absorber package and 500 m
1 of air into an oxygen barrier packaging material (KON/PE, 15x
After putting it in a 30 cm bag and sealing it, it was left at 25°C and the time until the oxygen concentration reached zero was measured. For each oxygen absorber package, a product at the initial stage of production and a product after being left in the air at 25° C. for 6 months were used, and the number of samples was 10 for each example. The measurement results are shown in Tables 3 and 4.

[0045]

Effects of the Invention The present invention has stable oxygen scavenging performance even after long-term storage, and is easy to store. It is possible to provide an oxygen absorber package that anyone can easily use at home. Therefore, it is of great significance in industry, including the food field, and in general household products.

[0046]

[Table 1]

[0047]

[Table 2]

[0048]

[Table 3]

[0049]

[Table 4]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a cross-sectional view of the deoxidizing packaging material (C) used in the present invention. [Explanation of symbols] A: Breathable packaging material
D: Laminate layer B: Gas barrier laminated film E: Seal layer
C: Packaging material for oxygen removal
X: Temporarily bonded layer [Figure 2]
[Figure 3] Filling and packaging with a deoxidizing material using all or part of the deoxidizing packaging material (C) used in the present invention,
1A and 1B show cross-sectional views of a sealed oxygen absorber package of the present invention. (All: Figure 2, Part: Figure 3) [Explanation of symbols] A: Breathable packaging material
F: Oxygen absorber B: Gas barrier laminated film G: Peeling part
B': Gas barrier packaging material X:
Temporarily bonded layer E: Seal layer [Figure 4] and [Figure 5] Filling and packaging with a deoxidizing material using all or part of the deoxidizing packaging material (C) used in the present invention,
FIG. 2 shows a cross-sectional view of the oxygen absorber package after the gas barrier packaging material (B) has been peeled off from the sealed oxygen absorber package of the present invention. (All: Figure 4, Part: Figure 5) [Explanation of symbols] A: Breathable packaging material
E: Seal layer B': Gas barrier packaging material F: Oxygen absorber
(Margin below)

Claims (3)

[Claims] [Claim 1] Packaging material (A): Gurley air permeability is 1~
10,000 seconds/100 ml non-woven fabric made of polyethylene or polypropylene that does not allow water to pass through at normal pressure, or a microporous membrane that does not allow water to pass through at normal pressure and has micropores with a pore size of 0.01 to 30 μm made of polyethylene or polypropylene. A packaging material in which a perforated plastic film, microporous membrane, or nonwoven fabric is laminated as a sealing layer on the inside of the packaging material, or a resin is formed into a large number of stripes or meshes by extrusion lamination or coating. , Laminated film (B): Oxygen gas permeability is 20cc/m2・24hr・atm/25
A thin film with gas barrier properties consisting of one or more layers of plastic film or metal foil having a particle size of less than μm, the above-mentioned packaging material (A) and laminated film (B) are bonded with resin or adhesive on the surface of the laminated film (B). A layer (X) is formed by temporarily adhering the agent in a pattern or a fine network by extrusion lamination, printing or coating, or the packaging material (A) is made of a nonwoven fabric or microporous that does not allow water to pass through under normal pressure. A gas-impermeable oxygen absorber packaging material (C) obtained by partially melting the membrane and the laminated film (B), laminating them, and temporarily adhering them to form a layer (X) is used as an oxygen absorber. 1. An oxygen absorber package, characterized in that the oxygen absorber is used as all or a part of a packaging material, and the oxygen absorber is packaged and sealed with the (B) side of the packaging material facing outside. Claim 2: A layer (X) in which the packaging material (A) constituting the oxygen absorber packaging material (C) and the laminated film (B) are temporarily bonded together in the peripheral seal portion of the oxygen absorber package. The oxygen absorber package according to claim 1, which is partially peeled off. 3. Immediately before using the oxygen absorber package, the laminated film (B) constituting the oxygen absorber packaging material (C) of the package is
) is used after being peeled off.
The oxygen absorber package according to claim 2.