JPH0787761B2 - Oxygen absorber packaging - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an oxygen absorber package for the preservation of high-moisture foods, alcohol-containing foods, foods containing a large amount of oil, and the like.

[Conventional technology]

Breathable packaging is used as a variety of quality retention agents such as desiccants, insect repellents, oxygen scavengers, and freshness retention agents. As body requirements, it is necessary to attach importance to water resistance, breakage resistance, safety and hygiene in addition to breathability. Further, in order to preserve high-moisture foods, alcohol-containing foods, foods containing a large amount of oil, etc., alcohol resistance and oil resistance are required in addition to water resistance.

As a packaging material conventionally used for an oxygen absorber package, a microporous film made of a plastic material having pores,
For example, Juraguard (manufactured by Celanese, USA), Nitoflon NTF (manufactured by Nitto Denki Kogyo Co., Ltd.) or NF sheet (manufactured by Tokuyama Soju Co., Ltd.), and further polyethylene fibers, polyamide fibers, polyester fibers, polypropylene fibers. A non-woven fabric made of, for example, Tyvek (US,
Examples include DuPont), spunbond (Asahi Kasei Co., Ltd.) and the like. However, these packaging materials have the following drawbacks.

(1) In case of contact with food containing oil or alcohol,
Oil or alcohol is impregnated from the contact part of the packaging material.

(2) In the portion impregnated with oil or alcohol, the contents inside the package can be seen through as a stain, and the appearance is impaired.

(3) Further, oil and alcohol permeate the contents, and oxygen absorption is stopped, so that the food storage ability as an oxygen scavenger is lost.

As a method for improving the above problems, Japanese Patent Application Laid-Open No. 58-64959 discloses a method of impregnating or applying a fluororesin to a packaging material made of a microporous membrane or a nonwoven fabric. However, since these microporous membranes and non-woven fabrics are hydrophobic, there is a processing problem that the fluororesin stays only on the surface of the packaging material and does not reach the entire material or fiber even when impregnated or applied with the fluororesin. There was a limit to oil resistance and alcohol resistance. In addition, since the above microporous membrane and non-woven fabric are partially scattered with large open pores, even when impregnated or applied with a fluororesin, oil or alcohol permeates from the large pores, and the inside of the packaging material and deoxidized It may penetrate into the drug contents.

In addition, when a deoxidizer packaging bag that uses paper made of natural pulp to which a fluororesin is added as a part of the packaging material is brought into contact with oil-containing humid foods such as donuts and fried tofu, the oil is removed together with water in a relatively short time. It is difficult to penetrate into the packaging material and give practical oil resistance.

As mentioned above, humid foods containing oil or alcohol,
For example, the preservative effect of deoxidization such as prepared foods and Tsukudani has been recognized, and despite the need for an oxygen absorber package applicable to these alcohol-containing humid foods and oil-containing humid foods, the conventional The reality is that the technology has not yet developed oxygen absorbers applicable to alcohol-containing foods and oil-containing foods.

[Problems to be solved by the invention]

In view of the above problems, the present inventor has diligently studied the development of an oxygen absorber package that does not cause stains or lose its function even when it is directly contacted with a food containing oil or alcohol together with water.

As a result, polyethylene, polypropylene or the like wet-paper-making only plastic fibers, the sheet material dried is not water-resistant as it is water-permeable, because it is possible to impart good breathability and water resistance by hot pressing it, When the sheet material after drying is impregnated with fluororesin, the fluororesin adheres to the entire fiber, and if it is then hot pressed, it has breathability and water resistance, as well as alcohol resistance and oil resistance that could not be achieved with conventional materials. After confirming that the sheet can be applied, the inventors have found that the sheet is suitable as an oxygen absorber package and completed the present invention.

Although the sheet has a defect that the strength is weak in the longitudinal direction, it was also found that by laminating this sheet with a specific reinforcing material, a further excellent packaging material for an oxygen absorber package can be obtained.

[Means for solving problems]

That is, the present invention is a deoxidizer package in which a deoxidizer is contained in a packaging material comprising a breathable sheet as a part or the whole thereof, wherein the breathable sheet is made of plastic fibers and then dried. The oxygen scavenger package is characterized in that it is added by impregnating with a fluororesin and then pressed by a hot roll.

Further, the present invention provides an oxygen scavenger package characterized in that the breathable sheet is laminated with a reinforcing material.

The plastic fiber used in the present invention is a method in which a polymer solution is flashed in a non-solvent under high-speed agitation to be a fiber, a method in which a fiber is directly applied with a share in a polymer polymerization tank, and a fiber is produced by flash-spinning to be defibrated. It is produced by a method (flash method) or a method in which an extruded sheet is stretched in the machine direction and then split into pieces (stretching method), and the flash method is particularly preferable.

In the present invention, as the plastic fiber, for example, polyolefin such as polyethylene or polypropylene,
One or two or more selected from polyamides such as nylon and polyesters such as polyethylene terephthalate, preferably polyethylene or polypropylene, polyethylene / polypropylene, polyethylene / polyethylene terephthalate, polyethylene / polypropylene / polyethylene terephthalate. Is used. These plastic fibers are preferably added with polyvinyl alcohol so as to be well suspended in water during papermaking. Also, the pore size is
The width of the fiber is preferably as small as possible. Therefore, the fiber having a width of 50 μm or less, preferably 30 μm or less is usually used. Usually, the length of the fiber is preferably 0.1 to 200 mm.

The plastic fibers are suspended in water together with additives such as dispersant defoamers. The obtained plastic fiber suspension is introduced into a paper machine, filtered through a wire, sucked and dehydrated, and then passed through a dryer to become a dried sheet material. The concentration of the plastic fiber in suspending the plastic fiber in water is not particularly limited, but it is set in the range of 0.1 to 10% by weight, preferably 0.5 to 5% by weight in consideration of workability during papermaking.
The drying time and the drying temperature when the plastic fiber suspension is formed and dried are not particularly limited, and the water content of the sheet material is preferably 0.1% or less. The basis weight of the sheet material obtained by drying is 5 to 300 g / m ² , preferably 20 to 150 in consideration of the air permeability, strength and economical efficiency of the sheet material.
It is set in the range of g / m ² . The sheet material thus obtained has air permeability but is not yet water resistant, and allows water to permeate well.

Then, the sheet material is immersed or contacted with an emulsion in which a fluorine resin is dispersed in an aqueous solution or a solution obtained by dissolving the fluorine resin in a solvent, and the sheet material is impregnated with the fluorine resin. The fluorine resin added to the sheet material is not particularly limited, but is preferably tetrafluoroethylene resin,
Examples thereof include tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene-fluoroalkoxyethylene copolymer resin, trifluoroethylene chloride resin and derivatives thereof. The amount of fluororesin is 100 parts by weight of plastic fiber
It is 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight.

Thus, the sheet material impregnated with the fluorine resin is imparted with water resistance, oil resistance and alcohol resistance only after being pressed by a hot roll, and becomes a breathable sheet according to the present invention.

Pressurization by a hot roll is preferably performed by heating and pressing to a temperature at which the surface of the sheet is melted, and the intersections of the plastic fibers are heat-sealed. The temperature when pressing with a hot roll is usually 120 to 140 ° C, preferably 125 ° C to 135 ° C, and the pressure is usually 0.5 to 6 kg / cm ² , preferably 3 to 5 kg / cm ² .

The thickness of the breathable sheet is usually 1 mm or less, preferably 0.2 mm or less.

The oxygen scavenger enclosed in the present invention is not particularly limited as long as it has an oxygen absorbing action,
Sulfite, bisulfite, nithionite, ferrous salt,
Hydroquinone, catechol, resorcin, pyrogallol, gallic acid, rongalit, ascorbic acid and / or
Alternatively, a deoxidizer containing a salt thereof, isoascorbic acid and / or a salt thereof, sorbose, glucose, lignin, dibutylhydroxytoluene or butylhydroxyanisole, or a deoxidizer containing a metal powder such as iron powder is used. An oxygen scavenger containing ascorbic acid and / or a salt thereof, isoascorbic acid and / or a salt thereof, or iron powder is preferably used. Of these, the oxygen absorber containing iron powder is particularly preferably used. Further, a carbon gas generation type oxygen absorber or a carbon gas absorption type oxygen absorber can also be used.

In the present invention, in order to increase the strength of the package, it is also preferable that the reinforcing agent is laminated on the breathable sheet.

The reinforcing material used in the present invention is, for example, a braided thread or band made of a plastic such as a polyolefin such as polyethylene or polypropylene, a polyamide such as nylon, a polyester such as polyethylene terephthalate, or a warp of the above thread. And a weft, or those in which the vertical and horizontal bands of the above-mentioned strip are heat-sealed or fixed with an adhesive, and further various methods such as wet type, dry type, spun bond, melt plane, needle punch, etc. A non-woven fabric or the like made in is used. Specific examples of these reinforcing materials include Nisseki Warif (manufactured by Nisseki Goju Products Co., Ltd.) and Diacross (Diatex Co., Ltd.).
Made), Clenet (made by Kuraray Co., Ltd.), Sofcross (made by New Japan Sof Co., Ltd.) or Sofnet (made by Shin Nippon Sof Co., Ltd.), Elves (made by Unitika Co., Ltd.), Unicell (Teijin (shares) )), Axter (manufactured by Toray Co., Ltd.), Baireen (manufactured by Japan Vilene Co., Ltd.) and the like.

Especially, the melting point is 120 on both sides of high density polyethylene film.
Low density polyethylene of ℃ or less, preferably 115 ℃ or less,
Unstretched or stretched film laminated with ethylene-vinyl acetate copolymer or ethylene-acrylic acid ester copolymer is cut into 3 to 3 mm wide yarns,
Preferred is a non-woven fabric having a heat-sealing property, which is obtained by forming a lattice of 50 yarns / inch width, heat-melting yarns, and a raw material fiber such as polypropylene or polyethylene terephthalate as a core and polyethylene as a sheath. Used.

The width and number of yarns are adjusted according to the required air permeability of the breathable sheet, and the air permeability is the Gurley type air permeability specified in JIS P-8117, which is usually 1 to 5000 seconds / 100 ml in ₂ . The range is preferably 5 to 1000 seconds / 100 ml in ₂ .

The non-woven fabric used as a reinforcing material in the present invention has a basis weight of 10 in consideration of the processability in laminating and bonding with the breathable sheet of the present application and the mechanical suitability in producing the oxygen absorber package.
It can be used up to ~ 200 g / m ² . A non-woven fabric having a small grammage as a reinforcing material cannot obtain the desired packaging material strength, and if the grammage is too large and too thick, there is a problem in processability and mechanical suitability.Therefore, a grammage of 20-100 g / m ² Preferably used.

Further, the above-mentioned non-woven fabric as a reinforcing material is made of a raw material containing polyethylene, polypropylene, etc., in consideration of the processability in laminating and adhering to the breathable sheet and the mechanical suitability in producing the oxygen absorber package. Nonwoven fabrics are preferably used.

In the present invention, the lamination of the plastic fiber to which the fluororesin is added and the reinforcing material is achieved by hot pressing using a hot roll. Therefore, when the sheet and the reinforcing material are laminated and used, the sheet obtained by adding plastic by drying the plastic fiber after papermaking and further impregnating the fluorocarbon resin with the reinforcing material is laminated with the reinforcing material on the heat roll. The method of hot pressing is efficient.

The oxygen scavenger package of the present invention uses the breathable sheet obtained by making plastic fibers as described above, drying, and then impregnating with a fluororesin, and then hot pressing to obtain a part or all of the packaging material. And a structure in which the oxygen absorber is stored therein, and a structure in which the sheet in which the breathable sheet and the reinforcing material are laminated as described above is used as part or all of the packaging material to store the oxygen absorber. However, an example thereof is as follows.

(1) Breathable sheet (a) and nylon / polyethylene,
The composite film (b) containing a polyethylene layer such as polyethylene terephthalate / polyethylene is combined with the polyethylene surface of (b) and (a), and an oxygen scavenger is placed between the two, and the peripheral edge of the packaging material is heat-sealed. Then, an oxygen absorber packaging body in which an oxygen absorber is enclosed inside.

(2) Laminated sheet (a) of breathable sheet and reinforcing material and nylon / polyethylene, polyethylene terephthalate /
The composite film (b) containing a polyethylene layer such as polyethylene is combined with the polyethylene surface of (b) and the reinforcing material surface of (a), an oxygen scavenger is placed between the two, and the peripheral edge of the packaging material is heated. An oxygen absorber package that is sealed and has an oxygen absorber sealed inside.

(3) An oxygen absorber package in which a laminated sheet in which a breathable sheet and a reinforcing material are laminated is folded with the reinforcing material inside and the peripheral edge is heat-sealed, and an oxygen absorber is enclosed inside.

(4) An oxygen scavenger package in which an air permeable sheet is laminated with a perforated low softening point resin film, the low softening point film is folded inside, and the peripheral edge is heat-sealed while an oxygen scavenger is enclosed inside. As the perforated low softening point resin film, a polyethylene film, an ethylene vinyl acetate copolymer film or an ionomer film in which holes are formed is preferably used.

The shape of the package is not particularly limited, but is usually a quadrangle.

〔Example〕

 Hereinafter, the present invention will be described in more detail with reference to examples.

Example 1 (Production of sheet material) Various plastic fibers shown in Table 1 were dispersed in water so that the concentration thereof was 1% by weight. The resulting suspension of plastic fibers was introduced into a paper machine to make a paper. In this papermaking process, water was removed from the plastic fiber suspension by a wire net to form a paper layer, and the paper layer was sandwiched between a pair of rolls and compressed at 1 kg / cm ^{2 for} further dehydration.
Then dried at 100 ℃ for 1 minute, moisture less than 0.1%, basis weight 90
A sheet material having a g / m ² was produced.

Table 1 shows the types of plastic fibers used for producing the sheet material and the composition ratio of each plastic fiber.

Example 2 (Production of Breathable Sheet) A sheet of the sheet material obtained in Example 1 was diluted with a water- and oil-repellent agent Asahi Guard AG530 (trade name, manufactured by Asahi Glass Co., Ltd.) (fluorine resin concentration: 2% by weight). After impregnating 25 parts by weight and 50 parts by weight with respect to 100 parts by weight of the material, 5
Dry for minutes.

Next, the sheet material containing this water and oil repellent was added at 140 ° C.
The air-permeable sheet in which the plastic fibers were fused to each other was produced by passing the mixture at a speed of 10 m / min through a pair of rolls that were heated to a pressure of 6 kg / cm ² .

The Gurley type air permeability of the thus-obtained breathable sheet was measured by the method specified in JIS P-8117. Further, this breathable sheet was immersed in soybean oil to carry out an oil resistance test, and immersed in 100% ethanol to carry out an alcohol resistance test. The results are shown in Table 2.

In the oil resistance and alcohol resistance tests, the appearance of the breathable sheet was observed over time, and Table 2 shows the appearance on the 14th and 30th days.

As is clear from Table 2, Gurley air permeability is 50
It had a second / air volume of 100 ml in ₂ or less and had very good air permeability. Further, in both dipping tests, the breathable sheet had a good appearance even on the 30th day.

Comparative Example 1 A breathable sheet was produced in the same manner as in Example 2 except that the fluororesin emulsion water and oil repellent Asahi Guard AG530 (trade name, manufactured by Asahi Glass Co., Ltd.) was not impregnated.

The Gurley type air permeability of the thus-obtained breathable sheet was measured by the method specified in JIS P-8117. Further, this breathable sheet was immersed in soybean oil to carry out an oil resistance test, and immersed in 100% ethanol to carry out an alcohol resistance test. The results are shown in Table 2.

In the oil resistance and alcohol resistance tests, the appearance of the breathable sheet was observed over time, and Table 2 shows the appearance on the 14th and 30th days.

Comparative Example 2 A breathable sheet was prepared in the same manner as in Example 2 except that a microporous membrane and Duraguard (trade name, manufactured by Celanese Co., USA) were used in place of the sheet material obtained in Example 1 in Example 2. Manufactured.

The Gurley type air permeability of the thus-obtained breathable sheet was measured by the method specified in JIS P-8117. Further, this breathable sheet was immersed in soybean oil to carry out an oil resistance test, and immersed in 100% ethanol to carry out an alcohol resistance test. The results are shown in Table 2.

In the oil resistance and alcohol resistance tests, the appearance of the breathable sheet was observed over time, and Table 2 shows the appearance on the 14th and 30th days.

Comparative Example 3 A breathable sheet was produced in the same manner as in Example 2 except that a nonwoven fabric and Tyvek (trade name, manufactured by DuPont, USA) were used instead of the sheet material obtained in Example 1 in Example 2.

The Gurley type air permeability of the thus-obtained breathable sheet was measured by the method specified in JIS P-8117. Further, this breathable sheet was immersed in soybean oil to carry out an oil resistance test, and immersed in 100% ethanol to carry out an alcohol resistance test. The results are shown in Table 2.

In the oil resistance and alcohol resistance tests, the appearance of the breathable sheet was observed over time, and Table 2 shows the appearance on the 14th and 30th days.

Comparative Example 4 The sheet material obtained in Example 1 was diluted with a water- and oil-repellent agent Asahi Guard AG530 (trade name, manufactured by Asahi Glass Co., Ltd.) (fluorine resin concentration: 2 parts by weight) to 100 parts by weight of the sheet material. 25 parts by weight or 50 parts by weight, and then dried at 60 ° C. for 5 minutes.

The Gurley type air permeability of the thus-obtained breathable sheet was measured by the method specified in JIS P-8117. Further, this breathable sheet was immersed in soybean oil to carry out an oil resistance test, and immersed in 100% ethanol to carry out an alcohol resistance test. The results are shown in Table 2.

In the oil resistance and alcohol resistance tests, the appearance of the breathable sheet was observed over time, and Table 2 shows the appearance on the 14th and 30th days.

Example 3 (Manufacture of oxygen absorber package) A breathable sheet obtained in Example 2 was cut into a size of 40 × 40 mm, and one side thereof was used as a composite film composed of polyester having a thickness of 12 μ and polyethylene having a thickness of 45 μ. A 40 x 40 mm piece is overlaid on the other side and an oxygen scavenger 3g (oxygen absorption capacity 600ml) with iron as the main component is placed between them, and the edges of the sheet and film are enclosed so that the oxygen scavenger is enclosed inside. To
It was heat-sealed at 130 ° C. for 3 seconds.

The oxygen scavenger package produced in this way is deep-fried 70
The bag was sealed with a vinylidene chloride coated stretched nylon / polyethylene laminated film together with g and 250 ml of air and stored at 25 ° C.

The deoxidation time (the time required for the oxygen concentration in the bag to reach 0.1% after the start of storage) is measured, and the appearance of the oxygen scavenger package is observed to check the oil impregnation status and the Satsuma frying storage status. Was observed. The results are shown in Table 3.

Comparative Example 5 An oxygen absorber package was produced in the same manner as in Example 3 except that the breathable sheet obtained in Comparative Example 1 was used instead of the breathable sheet obtained in Example 2. Then, the same test as in Example 3 was performed. The result is the third
The results are shown in the table together with Example 3.

Comparative Example 6 An oxygen absorber package was produced in the same manner as in Example 3 except that the breathable sheet obtained in Comparative Example 2 was used instead of the breathable sheet obtained in Example 2. Then, the same test as in Example 3 was performed. The result is the third
The results are shown in the table together with Example 3.

Comparative Example 7 An oxygen absorber package was produced in the same manner as in Example 3 except that the breathable sheet obtained in Comparative Example 3 was used instead of the breathable sheet obtained in Example 2. Then, the same test as in Example 3 was performed. The result is the third
The results are shown in the table together with Example 3.

Comparative Example 8 An oxygen absorber package was produced in the same manner as in Example 3 except that the breathable sheet obtained in Comparative Example 4 was used instead of the breathable sheet obtained in Example 2. Then, the same test as in Example 3 was performed. The result is the third
The results are shown in the table together with Example 3.

In Table 3, all the oxygen scavengers of Comparative Examples 5 to 8 lost the ability to absorb oxygen on the 7th day.

Example 4 A breathable sheet was produced by the method of Example 2 using the sheet material A (see Table 1) obtained in Example 1.
As the fluorine resin source, Asahi Guard AG-530 (fluorine resin concentration 2%) was used in an amount of 50 parts by weight per 100 parts by weight of the sheet material (fluorine resin addition amount: 1 part by weight per 100 parts by weight of the sheet material).

The breathable sheet thus obtained and LDPE (low density polyethylene (melting point 105 ° C)) / HDPE (high density polyethylene) / L
A DPE (melting point 105 ° C) film is cut into various thicknesses and the number of pieces of yarn is woven with plain weave, and a reinforcing material is heated on a heat roll.
Both were pasted at 120 ° C., a pressure of 0.5 kg / cm ² , and a speed of 40 m / min. The tear strength and Gurley air permeability of this laminated sheet were measured. The results are shown in Table 4. For comparison, Table 4 also shows the tear strength and the Gurley air permeability when the reinforcing material is not laminated on the breathable sheet.

Example 5 A composite packaging material of polyester (thickness 12μ) / polyethylene (thickness 45μ) on one side of a piece obtained by cutting the breathable sheet (sheet laminated with a reinforcing material) obtained in Example 4 into 40 × 40 mm. 40 x 40 mm is cut on the other side, and the both sides are made to face each other with the reinforcing sheet surface of the breathable sheet and the polyethylene surface of the composite packaging material facing each other, and iron between them is used as the main component and the oxygen absorption capacity is 60.
0 ml of oxygen scavenger was placed, and the peripheral edge of the packaging material was heat-sealed by hot pressing at 130 ° C. for 3 seconds so that the oxygen absorber was enclosed inside.

The oxygen scavenger package thus obtained is deep-fried 70
It was sealed in a polyvinylidene chloride coated stretched nylon / polyethylene laminate bag (KON / PE bag) together with g and 250 ml of air and stored at 25 ° C.

Measure the deoxidation time (the time required for the oxygen concentration in the bag to reach 0.1% after the start of storage), observe the appearance of the oxygen absorber package to check the oil impregnation status, and check the storage status of Satsumaage. I observed. Observation of the appearance of the packaging material and the state of preservation of the Satsumaage was carried out over time. The results are shown in Table 5.

Example 6 A water- and oil-resistant breathable sheet prepared by the method of Examples 1 and 2 and having a fluororesin added thereto, and a raw fiber having a polyester core and a polyethylene sheath having a basis weight of 50 g / m ² . A heat-sealing non-woven fabric (Elves (manufactured by Unitika Ltd.) was used at a temperature of 122 ° C and a pressure of 0.5 kg / c.
A heat roller was passed under the conditions of m ² and a speed of 30 m / min to bond the two to each other to obtain a laminated sheet.

The tear strength and Gurley air permeability of the obtained laminated sheet were measured, and the results are shown in Table 6. For comparison, Table 6 also shows the measurement results for the above-mentioned breathable sheet when no reinforcing material was laminated.

[Effects of the Invention] The oxygen scavenger package of the present invention is made by paper-making with a plastic fiber, and after adding a fluororesin, it is heat-pressed to the breathable sheet, and if necessary, a reinforcing material is attached to the packaging material to remove oxygen. By encapsulating the agent, the following features not found in the conventional oxygen absorber packaging are recognized.

In a conventional fluororesin-added package, the packaging material is impregnated with the ethanol aqueous solution when contacted with 10-50% ethanol aqueous solution, but the packaging body of the present invention is not impregnated with 100% ethanol.

In the oxygen absorber packaging body using the conventional fluorine resin-added packaging material immersed in the oil of Tempura oil, the packaging material is impregnated with oil in 1 to 3 days, and the contents can be seen through. The package of the present invention shows no change in the appearance of the packaging material even after being immersed in the frying oil for 14 days.

Furthermore, when contacted with oil-containing foods such as donuts,
In the conventional oxygen absorber packaging, oil permeates the inside from the contact surface with the packaging material and oxygen absorption stops halfway, so the food sealing system is not completely deoxidized, and mold is generated in the food. In the package of the invention, oil does not migrate to the inside of the package, and thus the original deoxidizing performance is exhibited and the freshness of food is preferably maintained.

The tear strength of sheets without laminated reinforcement is 60 to 140 across.
g, length 30-90g, but by stacking with a reinforcing material,
Both vertical and horizontal will be improved to 600-1500g.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of the structure of the oxygen absorber package according to the present invention. FIG. 2 shows a cross-sectional view of one embodiment of a breathable sheet in which reinforcing materials are laminated. FIG. 3 shows an example of the structure of the reinforcing material. FIG. 4 shows a cross-sectional view of one embodiment of a breathable sheet having a nonwoven fabric as a reinforcing material. In the figure, 1 ... Composite film: polyester film / polyethylene film (sealing surface) 2 ... Breathable sheet: Fluorocarbon resin-added sheet / reinforcing material (sealing surface) 3 ... Oxygen absorber 4 ... Reinforcing material lateral yarn 5 …… Reinforcing material vertical yarn 6 …… Nonwoven fabric

Claims (2)

[Claims] 1. An oxygen scavenger package in which an oxygen scavenger is housed in a packaging material using a breathable sheet as a part or the whole thereof, wherein the breathable sheet is made of plastic fibers and then dried. An oxygen absorber package, characterized in that the oxygen absorber package is formed by further impregnating a fluororesin, and then adding pressure by a hot roll. 2. The oxygen absorber package according to claim 1, wherein the breathable sheet is laminated with a reinforcing material.