JPH0640464A - Liquid resistant air-permeable packaging material - Google Patents

Abstract

PURPOSE:To improve the liquid resistance, and solve problems such as bleeding of a content or rust migration by a method wherein a film or sheet having a specified oxygen permeability, on which numerous unpenetrated fine pores are bored while leaving a non-through film part, is used as a packaging material to isolate a quality retaining agent such as a free-oxygen absorber, etc. CONSTITUTION:The packaging material 4 with an excellent liquid resistant air permeability is a laminated film of a heat-resistant film 1 and heat-sealable film 2, and is formed of a film or sheet on which numerous unpenetrated fine pores 3 are bored while leaving a non-through film part, and the oxygen permeability is made to be 10,000cc/m<2>.24Hr/atm or higher. This packaging material is used in such a form that a quality retaining agent, etc., such as a free-oxygen absorber, carbon dioxide gas absorbent, ethylene absorbent, preservative or desiccant, etc., is covered by this packaging material at one part of gas barrier container or bag in which an article is contained, and is fixed by an adhesive on the container or bag. Also, when it is necessary a heat-sealable nonwoven fabric or waterproof nonwoven fabric is laminated on the above-mentioned laminated film.

Description

Detailed Description of the Invention

[0001]

INDUSTRIAL APPLICABILITY The breathable packaging material according to the present invention is applied with various quality-retaining agents such as oxygen scavengers, carbon dioxide absorbents, ethylene absorbents, desiccants and rust preventives. It is used as a liquid-resistant and breathable material for the purpose of separating from the target object. Further, the liquid-permeation-resistant packaging material according to the present invention is particularly excellent in liquid resistance and the effect of preventing the leakage of the quality-retaining agent, and is effective for isolating the quality-retaining agent or the content-retaining agent in which the leakage of the contents with respect to a high-moisture product becomes a problem. It is suitable and can be effectively used not only in the field of foods such as foods, beverages and fruits and vegetables but also in a wide range of fields such as metal parts and pharmaceuticals for the isolation and packaging of quality preservation agents.

[0002]

2. Description of the Related Art Examples of quality-retaining agents which are separately packaged from a target article by a breathable packaging material include oxygen scavengers, carbon dioxide gas absorbents, ethylene absorbents, desiccants and rust preventives.
Of these, packaging materials for quality-retaining agents such as oxygen scavengers have been widely used recently mainly for foods. However, there are a wide variety of foods that are subject to quality preservation, and many foods and beverages that are difficult to apply due to stains, rust, etc. caused by the contents of conventional oxygen absorber packages using breathable packaging materials. is there.

As a breathable packaging material for a conventional oxygen scavenger package, for example, a laminate of paper and a perforated polyethylene film is used. The air permeability in this case is controlled by the porosity of the polyethylene film. It had been. But,
When this oxygen absorber is applied to humid foods and beverages, the packaging material is inferior in water resistance, so that the oxygen absorber packaging bag is damaged by moisture, or the contents leak out through the holes of the perforated polyethylene film. However, there is a case where it is not preferable from the viewpoint of safety and hygiene of foods, and further, the oxygen absorption rate becomes slow due to water wetting, and the quality retention ability may not be sufficiently exhibited.

As a packaging material for improving the above-mentioned drawbacks, Japanese Patent Laid-Open No. 53-51096 discloses that two plastic films having different melting points are perforated and they are stacked as they are, or laminated with paper sandwiched therebetween. Disclosed packaging materials. Further, JP-A-56-124440 or JP-A-5-124440
Japanese Patent Laid-Open No. 6-124441 discloses a packaging material using a plastic film similarly having holes on its surface. However, since the surface of the packaging material is a plastic film, the water resistance is higher than that of paper, but a large number of through-holes are provided to provide air permeability, so that the food is humid, that is, food having a high water content. When it comes into contact with, the packaging material has a drawback that the packaging material gets wet and the contents ooze out, causing safety and health problems, and the strength is weak. Further, there are drawbacks such that the holes are deformed and the air permeability is changed due to the influence of the adhesive due to heat bonding or the use of an adhesive at the time of manufacturing the packaging material. In addition, when applied to humid foods, the plastic film on the surface and the paper are peeled off, which sometimes makes it impossible to use as a packaging material such as an oxygen scavenger or a packaging material for isolation. In either case, it is generally performed to perforate the plastic film with pores by a needle or the like to ensure oxygen permeability, but for example, when the object is a liquid, etc. However, there is a problem that the oxygen retention is stopped due to the intrusion of oxygen and the quality-retaining agent such as the oxygen scavenger gets wet, and the contents leak out.

Further, a plastic film having a high oxygen permeability (eg, polyethylene, polymethylpentene,
When a film such as polybutadiene is used as an isolation material for quality-retaining agents such as oxygen absorber packaging, it has excellent liquid resistance but the oxygen permeability required to obtain a practically sufficient oxygen absorption rate. It was impossible to secure. In addition, as an example of a cap-type oxygen absorber for liquid,
-080260 describes that a water-resistant microporous membrane or the like is used as a separating material, but it is difficult to apply to permeable liquids such as alcohol-containing beverages, and its liquid resistance was insufficient.

As described above, as a problem of the package in which the quality-retaining agent typified by the oxygen scavenger is isolated and packaged by the conventional air-permeable packaging material, the liquid-proof property and the liquid-proof strength are considered as the problem. There is also a problem of stains and rust migration of contents, and when applied to humid foods, beverages, liquid pharmaceuticals, etc., there is a problem in terms of safety and hygiene and practically sufficient oxygen permeability is secured. It was pointed out that it was difficult.

[0007]

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems of the conventional packaging material for quality preservatives, and to ensure safety even when applied to humid foods, beverages, liquid pharmaceuticals and the like. It is an object of the present invention to provide a liquid-permeation-resistant packaging material for sequestering a quality-retaining agent, which has no problems in hygiene and has practically sufficient air permeability.

[0008]

The present inventors have completed the present invention as a result of intensive studies in view of the problems of the prior art. That is, the liquid-permeation-resistant packaging material for quality retention agent isolation according to the present invention is a film or sheet in which non-penetrating micropores are perforated to leave a non-penetrating membrane portion,
Oxygen permeability is required to be 10,000cc / m ² · 24Hr · atm or more.

The present invention will be described in detail below. Examples of the liquid-permeation-resistant packaging material based on the present invention include those having the following configurations. (1) polyethylene terephthalate, polyamide, polypropylene, polycarbonate, cellophane, a film made of trimethylpentene or polyvinyl alcohol, a polyvinylidene chloride coating film, an aluminum foil laminated film, or a heat-resistant film such as an aluminum vapor deposition film, polyethylene, Polypropylene, ethylene acrylic acid copolymer resin, ethylene ethyl acrylate copolymer resin, ionomer, polybutadiene,
Shear consisting of ethylene vinyl acetate copolymer resin film, etc.
In the laminated film obtained by laminating and bonding a transparent film, a non-penetrating micropore is formed by penetrating it from the heat resistant film side and leaving an unpenetrated residual film portion on at least the sealing film side. Packaging material.

(2) The above heat-resistant film alone or the laminated film of (1) above and a heat-sealing non-woven fabric (for example, polypropylene such as Unitika's "Elves", Teijin's "Unicel", polyethylene, etc. Wet or dry non-woven fabrics made from synthetic fibers, composite fibers, synthetic pulp, etc., various microporous membranes made of polyethylene, polypropylene, etc. (eg Sekisui Chemical's "Serpore", Tokuyama Soda's "Porum", " Various microporous membranes that do not allow water to pass under normal pressure such as "NF sheet" are used, or synthetic resins,
Water resistant non-woven fabric made of synthetic pulp (for example, various non-woven fabrics such as "Tyvek" manufactured by DuPont, "Luxer" manufactured by Asahi Kasei, "Alto" manufactured by Awa Paper Co., Ltd. that are impermeable to water under normal pressure are used)
A packaging material obtained by punching from a heat resistant film side into a laminated sheet obtained by laminating and adhering and a perforated microporous layer having at least an unpenetrated residual film portion left in the laminated sheet.

(3) A single film having heat sealing properties such as heat sealable polyethylene terephthalate and polypropylene is perforated from the opposite side of the heat seal surface, and at least a residual film portion is left unpenetrated. A packaging material that is perforated.

(4) The above heat-resistant film alone or the laminated film obtained by applying hot melt as a seal layer to the above-mentioned (1) laminated film is perforated from the heat-resistant film side, and at least the laminated film is not exposed. A packaging material formed by forming unpenetrated micropores that leave a residual film portion of the penetration.

(5) Polyethylene, polypropylene, ethylene acrylic acid copolymer resin, ethylene ethyl acrylate copolymer resin, ionomer, polybutadiene, ethylene vinyl acetate copolymer resin film, etc. Packaging material made by punching.

Although the above-mentioned constitution is exemplified, the packaging material used in the present invention is not limited to the above-mentioned examples, and other combinations may be used as long as the object of the present invention can be achieved. Can be used. In addition, compounding various reinforcing materials for reinforcement is also appropriately performed. It is also possible to perforate from both sides of the packaging material, and it is necessary to penetrate the film layer with poor gas permeability, but even with a film with low gas permeability, the non-penetrating residual film part is sufficiently gas permeable. If the desired oxygen permeability is obtained, it does not necessarily have to be penetrated.

As the heat-resistant film in the constitution of the packaging material, polyethylene terephthalate, polyamide, polymethylpentene, polypropylene and the like are preferably used in consideration of packaging suitability, easiness of perforation, oxygen permeability and the like.

Next, as the seal layer, ethylene acrylic acid copolymer resin, ethylene ethyl acrylate copolymer resin, ionomer and ethylene vinyl acetate copolymer resin film are preferably used. When it is applied to retort foods or the like and further heat resistance is required, it is preferable to use a film of polypropylene, high density polyethylene, medium density polyethylene or the like as the seal layer. In addition, it is also preferable to use a single film of heat sealing property as the isolation material of the quality retention agent itself. Also,
When printing on the breathable packaging material of the present invention, it is preferable for safety and hygiene to print on the back side of the transparent plastic film on the surface.

The method of laminating and adhering is not particularly limited, and dry laminating, extrusion laminating, heat laminating and the like can be freely selected. Further, the above configuration is not limited to being used as a film in advance, and for example, a polyethylene film layer is formed on a heat resistant film by extrusion lamination, or a laminated film is manufactured and used at one time by a coextrusion method. It is also possible.

The plastic film used in the constitution of the present invention preferably has a thickness of 10 to 100 μm from the viewpoints of wrapping suitability, handling strength, easiness of perforation and the like, but when a nonwoven fabric, a microporous membrane or the like is laminated, , Not limited to this.

In the present invention, as a method for forming unpenetrated micropores in which at least a residual film portion is left in the packaging material, a mechanical perforation method including a chemical pretreatment, a laser perforation method,
Various methods such as the electron irradiation perforation method, the plasma perforation method and the high pressure discharge perforation method can be applied, but the high pressure discharge perforation method is preferable and effective.

As the high-pressure discharge perforation method, any of spark gap method, vacuum tube method and solid state method can be applied, but the solid state method is preferable. The perforation by the high-pressure discharge perforation method is performed by passing a target packaging material while applying a high voltage between the discharge electrode and the dielectric roll to cause electric discharge. The perforation density and the perforation depth are appropriately adjusted depending on the distance between the discharge electrode and the dielectric roll, the voltage, the shape of the discharge electrode, the characteristics of the dielectric roll, and the like. In this case, the thickness of the material to be drilled, the material,
Adjustment is also required depending on the passing speed

In order to perforate the non-penetrating micropores of the present invention, it is not sufficient to simply apply a high voltage between the discharge electrode and the dielectric roll to allow the target packaging material to pass while discharging, and various Ingenuity is required. As one of the pretreatments, it is also effective to perform a pretreatment step of mechanically making fine scratches with a file-shaped roll or the like before discharge perforation. Alternatively, it is also effective to carry out discharge perforation after forming a polar group on the film surface by acid treatment. Further, since a local discharge part is provided in the dielectric roll, it is possible to disperse the missing part in the covered dielectric layer or to form a dielectric layer in which a conductive material is dispersed to reduce the perforation density and perforation depth. It is effective for adjustment.

The material of the electrode used is aluminum, stainless steel or the like, but aluminum is preferably used. As the shape of the electrode, a knife edge type, a bar type, a shoe type or the like is used, but a knife edge type or a type in which the tip of the discharge part is made into a large number of needles is preferable. The processing power needs to be adjusted depending on the thickness, material, passing speed, etc. of the perforation target packaging material, but is carried out, for example, in the range of 5 to 200 W / m ² / min. The drilling direction is such that the residual film portion side is in contact with the dielectric roll.

The gas permeability represented by the oxygen permeability of the liquid-permeation-resistant packaging material according to the present invention is preferably determined by the perforation density, perforation depth (residual film thickness) and pore diameter when perforating the packaging material. It can be adjusted. Perforation density of 1,000
In order to secure sufficient oxygen permeability in the range of ˜10,000,000 holes / cm ² , 10,000 holes / cm ² or more is preferable and 50,000 holes / cm ² or more is more preferable in the above range.

The depth of perforation, that is, the residual film portion at the time of perforation of the non-through holes, is a thickness within a practical range in consideration of the characteristics of the packaging material, the packaging material strength of the residual film portion, etc. according to the desired oxygen permeability. Is adjusted. Generally, the thickness of the residual film is required to be 0.5 μm or more from the viewpoint of the strength of the packaging material, and is adjusted in the range of 10 μm or less to secure sufficient oxygen permeability, and 1 to 7 μm.
It is preferable to adjust within the range. The pore size is similarly adjusted in consideration of the oxygen permeability, the packaging material strength, etc., but when the printing pattern is printed, it is difficult to distinguish the printing pattern if the pore size is too large, so it is preferably 500 μm or less. Adjusted in the range of.

The gas permeability represented by the oxygen permeability of the liquid-permeation-resistant packaging material of the present invention is adjusted according to the oxygen permeability required by the quality preservation agent to be isolated and packaged. Practical oxygen permeability range is 10,000cc / m ² · 24Hr · at
m or more, preferably 50,000cc / m ² · 24Hr · atm
Or more, more preferably 100,000 cc / m ² · 24Hr · atm or more. According to the present invention, by providing the above-mentioned perforated holes in the material having the above-mentioned constitution, the oxygen permeability is 10,000 cc / m 2.
It is possible to obtain a breathable packaging material having excellent liquid resistance while maintaining the value of ² · 24 Hr · atm or more, and it is possible to impart a function that cannot be obtained by a conventional breathable packaging material.

That is, according to the constitution of the present invention, an extremely excellent liquid resistance is imparted by leaving the non-penetrating membrane portion while securing the oxygen permeability capable of sufficiently exerting the function of the quality preserving agent. In addition, it is possible to obtain a heat-sealing liquid-breathable packaging material. Then, the liquid-permeation-resistant packaging material constituted according to the present invention is applied with various quality-retaining agents such as oxygen absorbers, carbon dioxide absorbents, ethylene absorbents, desiccants, rust preventives, and quality-retaining agents. Used as a liquid-resistant and breathable material for the purpose of separating from the target object,
Particularly, it is excellent in liquid resistance and the effect of preventing leakage of the quality retention agent.

A typical example of the quality retention agent in the present invention is an oxygen scavenger. The oxygen absorber is, for example, sulfite, bisulfite, dithionite, hydroquinone, catechol, resorcin, pyrogallol, gallic acid, rongalit, ascorbic acid and / or its salt, isoascorbic acid and / or its salt, Sorbose, glucose, lignin, dibutylhydroxytoluene, butylhydroxyanisole, ferrous salt, or composed of a composition containing a metal powder such as iron powder, deoxidizing ability,
Those having a carbon dioxide generating deoxidizing ability or a carbon dioxide absorbing deoxidizing ability are used. The shape of the quality preserving agent is not particularly limited, and may be powder, granules, lumps, or sheets. Also,
A sheet obtained by mixing an oxygen absorber with pulp or the like to form a sheet, a sheet obtained by mixing with a thermoplastic resin or the like and then formed into a sheet, and a material such as a mixture of a polymer material and a metal catalyst used as an oxygen absorber may also be used.
Further, a quality retention agent package in which these quality retention agents are packaged in a breathable packaging material may be used. The quality-retaining agent is not limited to the shape and composition.

The following forms are exemplified as the form of the isolation packaging of the quality preservation agent using the excellent liquid-permeation-resistant packaging material of the present invention. (1) A form in which a quality-retaining agent or the like is adhered and fixed to a part of a gas barrier container or bag containing an article with the liquid-permeation-resistant packaging material of the present invention. (FIGS. 1 and 2) (2) A quality-retaining agent is placed between the lid and the container body of the gas barrier-property container containing the article, and the container is isolated by the liquid-permeable and air-permeable packaging material of the present invention. A form in which the lid body and the container body are heat-sealed via a liquid-permeable and air-permeable packaging material. (FIG. 3) (3) A form in which a quality-retaining agent is isolated in a gas-barrier article storage bag formed by sandwiching the liquid-permeation-resistant packaging material of the present invention. (Figure 4) (4) Put the quality retention material in the lid or cap of the bottle,
Form isolated by the liquid-permeation-resistant packaging material of the present invention (FIG. 5) (5) The liquid barrier-permeable packaging material of the present invention is prepared by arranging a deoxidizing material or the like on the inner wall of a gas barrier container or bag containing an article. Form that uses as a separator. (FIG. 6) (6) A form in which the quality-preserving agent package (FIG. 7) formed of the liquid-permeation-resistant packaging material of the present invention is placed directly inside a gas-barrier article storage container or bag.

[0029]

EXAMPLES Next, more detailed description will be given with reference to examples.
The present invention is not limited to this embodiment. Example 1 Polyethylene terephthalate film (thickness 12 μm)
After the character printing and the white solid printing were performed on the back surface of the above, a laminated film was obtained by extrusion laminating polyethylene to a thickness of 30 μm. This laminated film was perforated with non-penetrating holes at a density of 60,000 holes / cm ² from the polyethylene terephthalate film side by a solid-state discharge machine to obtain a liquid-permeation-resistant packaging material. At this time, the thickness of the non-penetrating membrane part is 5
was μm. On the other hand, an oxygen scavenger package (3 g of iron-based oxygen scavenger filled, 50 x 50 mm size) using a breathable packaging material in which a Western paper (basis weight 40 g / m ² ) and a perforated polyethylene film (thickness 40 μm) are laminated and bonded. ) Was prepared and isolated in a part of a bag of 200 × 300 mm vinylidene chloride stretched nylon / polyethylene with the above liquid-permeable and air-permeable packaging material (80 × 80 mm). 100 g of soy sauce pickled takuan was sealed and sealed in this isolated bag with the oxygen absorber package, and the bag was stored at 35 ° C. while being irradiated with a fluorescent lamp. After 2 weeks of storage, the oxygen concentration in the bag was analyzed, the quality of Takuan was confirmed, and the state of the oxygen absorber package was observed.

Comparative Example 1 The laminated film of Example 1 was used as a separating material for the oxygen absorber package without perforating, and the oxygen absorber package was isolated in the same manner as in Example 1. The same test as in Example 1 was carried out on the obtained bag with the oxygen absorber package.

Comparative Example 2 As the isolation material of the oxygen absorber package, the laminated film of Example 1 in which 20 through-holes were punched with a needle having a diameter of 1 mm was used, and the oxygen absorber package was prepared in the same manner as in Example 1. I isolated my body. The same test as in Example 1 was carried out on the obtained bag with the oxygen absorber package. The test results are shown in Table 1 together with the results of Example 1 and Comparative Example 1.

[Table 1]

The results shown in Table 1 show that in Example 1, the oxygen absorber package exhibits a sufficient quality retaining function due to the effect of the isolation material, and is excellent in liquid resistance and in good condition. Was held in. On the other hand, in Comparative Example 1, the oxygen permeability of the isolation material is small and the effect of maintaining the quality of the oxygen absorber package is not exhibited. Further, in Comparative Example 2, the liquid resistance of the isolation material was insufficient and Takuan's liquid wets the oxygen absorber package, oxygen absorption stopped halfway, and stains and rust occurred on the oxygen absorber package itself. .

Example 2 A polyethylene film (thickness 30 μm) was perforated with 70,000 holes / cm ² of density non-penetrating holes by a solid state discharge processor to obtain a liquid-permeable and air-permeable packaging material. At this time, the thickness of the non-penetrating film part was 4 μm. On the other hand, Western paper (basis weight 40 g / m ² ) and perforated polyethylene film (thickness 4
(0 μm) layered and bonded breathable packaging material for oxygen scavenger packaging (3 g of iron-based oxygen scavenger, 50 x 50 mm size)
Prepared. A 200 × 300 mm isolation bag was prepared by combining the above liquid-permeation-resistant packaging material and two packaging materials made of vinylidene chloride stretched nylon / polyethylene. The oxygen absorber package was sealed on one side of the isolation bag, and on the other side, 200 ml of soy sauce and 100 ml of air were sealed, sealed and sealed, and stored under fluorescent lamp irradiation at 25 ° C. Then, after two weeks of storage, the oxygen concentration in the bag was analyzed, the quality of soy sauce was confirmed, and the state of the oxygen absorber package was observed.

Comparative Example 3 As the isolation material for the oxygen absorber package, the laminated film of Example 1 was used without being perforated, and the oxygen absorber package was isolated in the same manner as in Example 2. The same test as in Example 2 was performed on the obtained bag with the oxygen absorber package.

Comparative Example 4 As the isolation material of the oxygen absorber package, the laminated film of Example 1 in which 20 through-holes were punched with a needle having a diameter of 1 mm was used. I isolated my body. The same test as in Example 2 was performed on the obtained bag with the oxygen absorber package. The test results are shown in Table 2 together with the results of Example 2 and Comparative Example 3.

[Table 2]

From the above results, in Example 1, the oxygen scavenger packaging body exerts a quality retaining function sufficiently due to the effect of the isolation material, and the oxygen scavenger packaging body is excellent in liquid resistance and the state of the oxygen scavenging fluid package is well maintained. It was On the other hand, in Comparative Example 3, the oxygen permeability of the isolation material is small and the effect of maintaining the quality of the oxygen absorber package is not exhibited. Further, in Comparative Example 4, the liquid resistance of the isolation material was insufficient, soy sauce wetted the oxygen absorber package, oxygen absorption stopped halfway, and stains were generated on the oxygen absorber package itself.

[0037]

The quality preservative isolation packaging material of the present invention comprises:
A non-penetrating microporous layer is left in the film or sheet to leave a non-penetrating ultra-thin film portion, and an oxygen permeability of 10,000 cc / m ² · 24Hr · atm or more is provided, so that As an isolation packaging material, it has sufficient air permeability and exhibits extremely excellent liquid resistance in terms of liquid impermeability and liquid resistance. Especially when applied to liquid products and high moisture products,
The liquid does not wet the quality-preserving agent, and the quality-preserving agent does not exude, and is excellent in terms of function and safety and hygiene. Therefore, it is suitable for isolating the quality retention agent or the quality retention agent in which leakage of the contents becomes a problem with respect to the high-moisture product,
It can be widely used not only in the food field such as foods, beverages and fruits and vegetables, but also in a wide range of fields such as metal parts and pharmaceuticals for isolation packaging of quality preservation agents.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an article storage bag in which a quality retention agent is isolated with a liquid-permeation-resistant packaging material in a part of the bag.

FIG. 2 is a cross-sectional view of an article storage container in which a quality-retaining agent is isolated by a liquid-permeation-resistant packaging material in a part of the container.

FIG. 3 is a cross-sectional view of an article storage bag in which a quality retention agent is isolated between bag materials via a liquid-permeation-resistant packaging material.

FIG. 4 is a cross-sectional view of an article storage container in which a quality retention agent is isolated between container lid materials via a liquid-permeation-resistant packaging material.

FIG. 5 is a cross-sectional view of a lid or cap of an article storage container in which a sheet-like quality retention agent is isolated with a liquid-permeation-resistant packaging material.

FIG. 6 is a partial cross-sectional view of the outer wall surface of a container or bag which is made of a non-breathable outer material / sheet-like quality retention agent / liquid breathable packaging material and has the quality retention agent isolated.

FIG. 7 shows a quality-preserving agent package formed from the liquid-permeation-resistant packaging material of the present invention.

FIG. 8 is a cross-sectional view of a liquid-permeation-resistant packaging material composed of a laminated sheet of heat resistant film / heat sealable film.

FIG. 9 is a cross-sectional view of a liquid-permeation-resistant packaging material composed of a laminated sheet of heat-resistant film / nonwoven fabric or microporous film.

FIG. 10 is a cross-sectional view of a liquid-permeable and air-permeable packaging material made of a laminated sheet of heat-sealing film.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat resistant film 2 Heat-sealing film 3 Non-penetrable microporous 4 Liquid-permeation-resistant packaging material 5 Nonwoven fabric or microporous membrane 6 Heat-sealing film 7 Quality-retaining agent or sheet-like quality-retaining agent 8 Bag 9 Container 10 Lid or cap 11 Non-breathable outer material for containers or bags

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[Procedure amendment]

[Submission date] February 24, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0028

[Correction method] Change

[Correction content]

The following forms are exemplified as the form of the isolation packaging of the quality preservation agent using the excellent liquid-permeation-resistant packaging material of the present invention. (1) A form in which a quality-retaining agent or the like is adhered and fixed to a part of a gas barrier container or bag containing an article with the liquid-permeation-resistant packaging material of the present invention. (FIGS. 4 and 5 ) (2) A quality-retaining agent is placed between the lid and the container body of the gas barrier container in which the article is housed, and the container is isolated with the liquid-permeable and air-permeable packaging material of the present invention. A form in which the lid body and the container body are heat-sealed via a liquid-permeable and air-permeable packaging material. (FIG. 7 ) (3) A form in which a quality-preserving agent is isolated in a gas-barrier article storage bag formed by sandwiching the liquid-permeation-resistant packaging material of the present invention. (Fig. 6 ) (4) Store the quality retention material in the lid or cap of the bottle,
Form isolated by the liquid-permeation-resistant packaging material of the present invention (FIG. 8 ) (5) A liquid-permeation-resistant packaging material of the present invention is prepared by arranging a deoxidizing material or the like on the inner wall of a gas barrier container or bag containing an article. Form that uses as a separator. (FIG. 9 ) (6) A form in which the quality-preserving agent package (FIG. 10 ) formed of the liquid-pervious and air-proof packaging material of the present invention is directly placed inside a gas barrier property-containing container or bag.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

[Fig. 1] Lamination of heat resistant film / heat sealable film
Sectional drawing of the liquid-permeation-proof packaging material which consists of a sheet.

[Fig. 2] Product of heat-resistant film / nonwoven fabric or microporous membrane
Sectional drawing of the liquid-permeable air-permeable packaging material which consists of a layer sheet.

FIG. 3 shows the heat resistance of a laminated sheet of heat-sealing film .
Sectional drawing of a liquid-permeable packaging material .

[Fig. 4] A part of the bag is made of a liquid-permeation-resistant packaging material and a quality-preserving agent.
Sectional drawing of the article storage bag which isolate | separated.

[Fig. 5] Maintaining quality with liquid-permeation-resistant packaging material in part of the container
Sectional drawing of the article storage container which isolate | separated the agent.

FIG. 6 is a liquid-permeation-resistant packaging material with a quality preservative between the bag materials .
Sectional drawing of the article storage bag isolate | separated through the charge.

FIG. 7: Liquid-permeation-proof packaging of quality retention agent between container lid materials
Sectional drawing of the article storage container isolate | separated via the material.

FIG. 8: A sheet-like quality preservative is used as a liquid-permeable and air-permeable packaging material.
Sectional drawing of the cover or cap of the isolated goods storage container.

[Fig. 9] Non-breathable outer material / sheet-like quality preserving agent / liquid resistance
A container or a container that is made of aerial packaging material and has a quality preservation agent isolated.
FIG. 3 is a partial cross-sectional view of the outer wall surface of the bag.

FIG. 10: Formed from the liquid-permeation-resistant packaging material of the present invention
Quality preservative packaging.

Claims (1)

[Claims] 1. A film or sheet in which non-penetrating micropores are perforated to leave a non-penetrating membrane portion, and the oxygen permeability is 1 or less.
A liquid-permeation-resistant packaging material for separating quality preservatives, which has a capacity of 0,000cc / m ² · 24Hr · atm or more.