JPS6367275A - Article preserving bag - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an article storage bag. More specifically, the present invention relates to a bag for storing articles using an oxygen absorber, the article storage bag separating the oxygen absorber from the articles.

[Conventional technology]

In recent years, oxygen absorbers have come to be used for purposes such as improving the shelf life of foods and other products. Oxygen absorbers are used to absorb oxygen from the air and reduce the oxygen concentration within the container by allowing it to exist in the sealed container of the product for a short period of time, and the presence of oxygen is undesirable when preserving food. It is used for storing goods.

Is the oxygen absorber superior in its effectiveness? 1, and its usage is also increasing. However, along with this, various problems in packaging technology and safety issues have been pointed out.

In other words, in the past, the oxygen absorber was simply filled in a pouch made of air-permeable material such as paper or plastic and enclosed in a sealed container. There is a concern that these substances may be mixed with other substances and accidentally eaten as food or feed.

In order to deal with the above problems, a method for isolating food and other items from oxygen absorbers has already been developed
271, Utility Model No. 59-78266, Utility Model No. 59-193
Various proposals have been made, such as 177 and 179 (1987-1987).

However, these are intended for product packaging bags with the four corners sealed, so if you are actually using these bags to store powdered or granular food or feed, and also to store oxygen absorbers at the same time. However, since the opening of the bag is difficult to open, it is difficult to put in the goods and the oxygen absorber, and in particular, it is difficult to put in the bag using a large-capacity hopper or chute. Furthermore, since the corners were pressed down with seals, the effective area was small compared to the area of the bag, making it impractical.

[Problem that the invention seeks to solve]

In view of the above-mentioned problems, the present inventors have developed an article storage bag for storing and sealing a particularly large amount of powdered or granular food or feed, such as grain, while separating it from an oxygen scavenger with good workability. After conducting various studies on the above, in particular, we developed a storage bag containing an oxygen absorber that has a structure in which a breathable partition is provided inside a cylindrical bag used for heavy packaging bags, and completed the present invention.

[Means for solving problems]

That is, the present invention provides: (a) a cylindrical gas barrier having an upper end and a lower end;
(a) a cylindrical breathable sheet disposed inside the outer material, having an upper end and a lower end; , an inner material formed by bonding the outer surface of the upper end and the inner surface of the outer material, and the outer surface of the lower end and the inner surface of the outer material, respectively; (c) a gap formed by the inner surface of the outer material and the outer surface of the inner material; The present invention relates to an article storage bag comprising an oxygen absorber housed in a space formed on the inner surface of the inner material and separating the oxygen absorber from the articles stored in a space formed on the inner surface of the inner material.

The present invention first uses an outer member made of a cylindrical gas barrier material having an upper end and a lower end, each of which is sealed by adhesive.

This outer material forms the outer bag of the article storage bag of the present invention.

Examples of the gas barrier material that forms the outer material include two or more layers of plastic film, paper and plastic film, aluminum foil and plastic film, and even a laminated sheet that combines aluminum foil, paper, and plastic film. is used, with a low softening point film laminated on the inside.

Specifically, for example, polyethylene terephthalate/
Polyethylene, nylon/polyethylene, vinylidene chloride coated polyethylene terephthalate/polyethylene,
Vinylidene chloride coated nylon/polyethylene, vinylidene chloride coated stretched polypropylene/polyethylene, polyethylene terephthalate/polyethylene/paper/polyethylene, nylon/polyethylene/paper/polyethylene,
Vinylidene chloride coated polyethylene terephthalate/polyethylene/paper/polyethylene, vinylidene chloride coated nylon/polyethylene/paper/polyethylene, vinylidene chloride coated stretched polypropylene/polyethylene/paper/
Polyethylene, paper/polyethylene/polyethylene terephthalate/polyethylene, paper/polyethylene/nylon/polyethylene, paper/polyethylene/vinylidene chloride coated polyethylene terephthalate/polyethylene, paper/
Polyethylene/vinylidene chloride coated nylon/polyethylene, paper/polyethylene/vinylidene chloride coated stretched polypropylene/polyethylene, paper/polyethylene/vinylidene chloride/polyethylene, polyethylene terephthalate/polyethylene/aluminum foil/polyethylene,
Nylon/polyethylene/aluminum foil/polyethylene, oriented polypropylene/polyethylene/aluminum foil/polyethylene, aluminum foil/polyethylene/polyethylene terephthalate/polyethylene, aluminum 6
Examples include combinations such as foil/polyethylene/paper/polyethylene.

As the inner low softening point film, in addition to the above-mentioned polyethylene, unstretched polypropylene, polyethylene-vinyl acetate copolymer, polyethylene ionomer, etc. can also be used.

The oxygen permeability of the outer material is preferably 200 m1/m2D atm or less, more preferably 100 m1/m''D atm or less. The thickness of the outer material is preferably 50 to 400μ from the viewpoint of strength and handling. In order to further increase the strength, it is sometimes used as a laminate with reinforcing materials such as warif, soft, cloth, and turret.

Bonding at the top and bottom edges is typically achieved by heat sealing the inner low softening point film.

Next, the article storage bag of the present invention is made of a cylindrical breathable sheet placed inside the outer material, and has an upper end and a lower end, and the outer surface of the upper end and the inner surface of the outer material are connected to each other, and the lower end An inner material is used in which the outer surface and the inner surface of the outer material are respectively bonded.

As the breathable sheet, paper, nonwoven fabric, microporous membrane, combinations thereof, and sheets laminated with a film having holes on one or both sides thereof are used.

As the paper, in addition to Western paper such as kraft paper, pure white roll paper, and high-quality paper, Japanese paper, and paper mixed with rayon or linen are used.

Nonwoven fabrics are made by wet, dry, or spunbond methods, and materials include polyethylene terephthalate, nylon, polyethylene, polypropylene, combinations thereof, and combinations of pulp and rayon.

As the microporous membrane, a membrane obtained by kneading a fine filler into a resin and stretching it, or a membrane obtained by extracting the filler, etc. are used. The material usually used is polyethylene, polypropylene, etc.

As the perforated film, polyethylene terephthalate, nylon, polyethylene, polypropylene, etc., with appropriate perforations of about 0.1 to 5 mm in diameter are used.

Although the adhesion between the inner material and the outer material can be achieved using a normal adhesive, it is particularly preferable to apply a sealing resin to the outer surface of the inner material and to adhere the inner material to the outer material by heat sealing. As the sealing resin, polyethylene, ethylene vinyl acetate copolymer, polyethylene ionomer, etc. are preferably used.

The breathability of the inner material is measured using the Gurley air permeability measurement method (JIS-P-8
117) Air permeation time 1.000.000 seconds/air 10
0m1 or less is preferably 500.000 seconds/100 air
More preferably m1 or less.

The thickness of the inner material is preferably 50 to 400 μm in consideration of strength and handling. In order to further increase the strength of the inner material,
It may also be used by laminating reinforcing materials such as warif, soft, cloth, and turret.

Furthermore, in the article storage bag of the present invention, an oxygen absorber is stored in the void formed by the inner surface of the outer material and the outer surface of the inner material, and the oxygen absorber is stored in the space formed on the inner surface of the inner material. It has a structure in which it is separated from the agent by an inner material.

Oxygen scavengers are compositions that absorb oxygen in contact with air and are stored in air-permeable sachets or containers, and the compositions include sulfites, bisulfites, dithionites, vitroquinone, and catechol. , resorcinol, pyrogallol, gallic acid, Rongalit, ascorbic acid and/or its salts, isoascorbic acid and/or its salts, sorbose, glucose, lignin, dibutylated hydroxytoluene or butylated hydroxyanisole, etc. A composition containing a ferrous salt such as iron or a composition containing a metal powder such as iron powder is used, and a composition containing a carbon dioxide gas generating type oxygen absorber composition or a carbon dioxide gas absorbing type oxygen absorber is used. Compositions and the like can also be used.

In the present invention, the inner material may be shorter or the same length as the outer material, but if the ends of the outer material and the inner material overlap, at least the inner surface of the end of the inner material To achieve the desired purpose, apply a low softening point resin, or laminate a film and heat seal it, or apply an adhesive and stack release paper, then peel off the release paper and press it when adhesion is necessary. reach In addition, the outer surface of the inner material and the inner surface of the outer material are bonded at the middle part between the upper end and the lower end of the inner material so as to cover the gap formed by the outer surface of the inner material and the inner surface of the outer material, and the resulting It is also an aspect of the present invention to store an oxygen scavenger in one of the two voids formed by the outer surface of the inner material and the inner surface of the outer material.

Since the storage bag of the present invention is mainly used as a heavy-duty packaging bag, a bag made of sheets such as kraft paper may be further layered on top of the outer material to create a structure that can withstand external shocks. After adhering the parts, it is possible to further sew the parts with thread to create a structure capable of withstanding the internal pressure of the stored article.

〔Example〕

A cylindrical outer material made of a laminate film of kraft paper/polyethylene/polyvinylidene chloride coated stretched nylon/polyethylene with an inner diameter of 50 cm, a length of 85 cm, and a thickness of 280 μ is inside a cylindrical outer material made of a warif/kraft paper laminate film that forms a concentric cylinder. A cylindrical inner material with an inner diameter of 50 cm, a length of 40 cm, and a thickness of 150 μm with a warif placed on the outside is passed through, and the lower end F of the outer material is heat-sealed with a width of 2 cm.
After sewing the center with thread, the outer surface of the inner material and the inner surface of the outer material were heat-sealed to a width of 2 cm at the lower end of the inner material so that the lower edge of the inner material was located 40 cm from the lower edge of the outer material. .

An iron-based oxygen scavenger (oxygen absorption capacity 2000m1) is placed in the gap between the inner and outer materials, and the space inside the inner material contains over 42% crude protein and 3.0% crude fat, which are to be preserved. that's all,
Compounded feed for young carp 1 consisting of blended fiber fa 2.5% or less, calcium 2.5% or more, and phosphorus 1.5% or more
I put 0 kg.

After adding the oxygen absorber and feed, the outer surface of the inner material and the inner surface of the outer material are heat-sealed with a width of 2 cm at the upper end B of the inner material, and further,
The outer materials were heat-sealed to each other with a width of 2 cm at the upper end A of the outer materials, and the center was sewn with thread.

The product storage bag containing this feed was stored at 35° C. for 3 months, and the lower end F of the outer material was opened and the feed was taken out.

Since the inner material was not cut, the oxygen absorber remained in the bag. Table 1 shows the results of examining the gas concentration in the bag before opening and the quality of the feed after opening.

Comparative Example 1 The same feed as in Example 1 was sealed in a bag made of polyethylene packaging material without using an oxygen absorber, and the same test as in Example 1 was conducted. The test results are shown in Table 1 together with the results of Example 1.

*Gas analysis was omitted in Comparative Example 1 because the polyethylene film is gas permeable.

Example 1, which used an oxygen absorber, maintained a deoxidized state and had a remarkable effect of suppressing oxidation, did not generate carbon dioxide gas, which is a sign of spoilage, and maintained its flavor well. on the other hand,
In the case of Comparative Example 1 in which no oxygen absorber was used, mold was generated,
Oxidation also progressed significantly.

〔Effect of the invention〕

According to the present invention, articles to be stored and the oxygen absorber can be separated from each other by a breathable sheet (inner material) and stored in a deoxidized environment, and the length of the inner material can be made shorter than the length of the outer material. ,
Either open the part where the inner surface of the outer material and the stored item contact, or divide the gap formed by the outer surface of the inner material and the inner surface of the outer material by adhesive, and then open the part that does not contain the oxygen absorber. Therefore, leave the oxygen absorber in the storage bag,
Stored items can be taken out. Furthermore, since the bag is made of a cylindrical material, it is extremely easy to store and take out the bag, making it possible to obtain an article storage bag that is highly workable and has an oxygen scavenging function.

[Brief explanation of drawings]

FIG. 1 is a diagram showing one embodiment of the article storage bag of the present invention. FIG. 2 is a view showing one embodiment of the article storage bag of the present invention, in which the upper end of the inner material is in contact with the upper end adhesive portion of the outer material, and the inner surface of the upper end of the inner material is bonded. FIG. 3 shows an article storage bag of the present invention in which the upper end of the inner material is in contact with the upper end adhesive part of the outer material, and the lower end of the inner material is in contact with the lower end adhesive part of the outer material, and the upper end inner surface of the inner material and the inner material FIG. 3 is a diagram illustrating an embodiment of a bag in which the inner surfaces of the lower end portions of the bags are bonded together. FIG. 4 shows an article storage bag of the present invention in which the upper end of the inner material is in contact with the upper end adhesive part of the outer material, and the lower end of the inner material is in contact with the lower end adhesive part of the outer material, and the upper end inner surface of the inner material and the inner material FIG. 3 is a diagram illustrating an embodiment of a bag in which the inner surfaces of the lower end portions of the bags are bonded together. In the figure, 1. Outer material 2. Inner material 311. Heat sealed portion between outer materials 312. Heat sealed portion between outer materials. 321. Heat sealed portion between inner materials. 322. Heat sealed portion between inner materials. 331. Heat sealed portion between outer surface of inner material and inner surface of outer material. 332 Heat-sealed portion between the outer surface of the inner material and the inner surface of the outer material 333 Heat-sealed portion between the outer surface of the inner material and the inner surface of the outer material 4 Oxygen absorber 5 Represents an article to be preserved. Patent applicant Sadafumi Kozuki, patent attorney representing Mitsubishi Gas Chemical Co., Ltd. Tail 2 Ward Qin l ``0 Ou Miko G-Q' Sex Review 3 Figure

Claims (5)

[Claims] (1) (a) An outer member made of a cylindrical gas barrier material having an upper end and a lower end, the upper end and the lower end of which are each sealed by adhesive; (b) disposed inside the outer member. The inner surface is made of a cylindrical breathable sheet having an upper end and a lower end, and the outer surface of the upper end and the inner surface of the outer material are adhered, and the outer surface of the lower end and the inner surface of the outer material are respectively bonded. (c) an oxygen scavenger stored in the void formed by the inner surface of the outer material and the outer surface of the inner material; An article storage bag that is separated from the medicine by an inner material. (2) The article storage bag according to claim 1, wherein the inner material is arranged inside the outer material so that the inner surface of the outer material has a contact portion with the stored article. (3) The article storage bag according to claim 1, wherein the upper end of the inner material is in contact with the upper end adhesive portion of the outer material, and the inner surface of the upper end of the inner material is adhesively sealed. (4) The upper end of the inner material is in contact with the upper end adhesive part of the outer material, and the lower end of the inner material is in contact with the lower end adhesive part of the outer material, and the inner surface of the upper end of the inner material and the inner surface of the lower end of the inner material are adhesively sealed. The article storage bag according to claim 1, wherein the article storage bag is (5) At the midpoint between the upper and lower ends of the inner material, the outer surface of the inner material and the inner surface of the outer material are adhered so as to bisect the gap formed by the outer surface of the inner material and the inner surface of the outer material. The article storage bag according to claim 1, wherein an oxygen absorber is housed in one of the voids.