JPH11208684A - Packaging bag for rice - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag for rice which can be maintained in a nearly sealed state in a normal condition, effectively preventing moisture from penetrating from the outside, and in which when the internal pressure is increased by a gas in the bag due to some causes, excessive gas can be vented to the outside. SOLUTION: In the packaging bag for rice, a film-shaped packaging material 1 such as a square plastic film having heat-adhesiveness and air tightness is folded and edges 1a, 1a of the opposite sides of the material 1 are faced to each other, and edges 2a, 2a of both sides of an air-permeable tape 2 having heat-adhesive property are thermally bonded respectively to the inner surfaces of the opposed portions 1b, 1b of the edges 1a, 1a, whereby a gap 3 for venting a gas in the bag is formed from the opposed portions 1b, 1b and a non-adhesive part 2b of the tape 2. In this case, the portions 1b, 1b are brought into abutting engagement with each other so as to be disengaged to close the gap 3, preventing moisture, water droplets from penetrating thereinto, and when the pressure in the bag is increased by the gas in the bag, the portions 1b, 1b are pushed open to vent the gas from the gap 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a packaging bag for rice cereals, and more particularly, to an action of discharging gas (gas) generated in the packaging bag and surplus gas in the packaging bag.
The present invention relates to a packaging bag for rice cereal having a function of preventing the intrusion of moisture such as moisture and water droplets from the outside.

[0002]

2. Description of the Related Art A variety of packaging bags for rice grains configured to discharge gas (gas) generated from rice grains contained in the packaging bag and surplus gas in the packaging bag to the outside have been used. A structure is provided, for example, FIG.
As shown in FIG. 17, a rectangular plastic film a having heat adhesion is bent so that both side edges b and b of the plastic film a face each other at a constant interval c, and the inner surface of the facing portion is formed. A tape-shaped non-woven fabric d made of a plastic fiber having heat-adhesive properties and air permeability is applied to the plastic film a.
Rice grain packaging which is formed by heating and bonding to both side edges b, b, and bonding the lower side edge f of the folded plastic film a by heating to form a bottom portion and providing an opening g above. Bags are well known.

[0003]

Thus, in the case of the rice cereal packaging bag constructed as described above, the space c provided at the opposing portions of the both side edges b of the plastic film a and the opposing portion are provided. The above gas in the packaging bag can be released to the outside through the tape-shaped non-woven fabric d having air permeability that is heated and adhered to the inner surface of the inner surface, but on the other hand, moisture such as moisture and water droplets penetrates from the portion, There is a serious problem that it is inevitable that the stored rice cereal deteriorates and changes its flavor.

The present invention has been developed with the object of solving the above-mentioned problems. Under normal conditions, the packaging bag can be kept in a substantially sealed state to effectively prevent ingress of moisture from the outside. It is an object of the present invention to provide a packaging bag for rice cereals having a feature that, when the internal pressure of the packaging bag increases due to gas in the packaging bag for some reason, surplus gas can be released to the outside.

[0005]

As a means for solving the above problems and achieving the object, the present invention is to fold a film-like packaging material such as a rectangular plastic film having heat adhesion and airtightness. The opposite side edges of the packaging material are opposed to each other, and the both side edges of the air-permeable tape having heat adhesiveness are heat-adhered to the inner surface of the opposing portion. In a rice cereal packaging bag that has formed a gas degassing gap in the packaging bag,
The opposing portions are opened and closed so as to close the deaeration gap to prevent the entry of moisture such as external moisture and water droplets, and the gas inside the packaging bag increases the internal pressure of the packaging bag. In such a case, the present invention provides a packaging bag for rice grains, characterized in that the opposed portion is pushed open to release gas from the deaeration gap.

Further, the present invention provides a rice cereal packaging bag constructed as described above, in which opposing portions of both side edges of the film-like packaging material are abutted and abut to close the deaeration gap. Rice cereal packaging bag, a rice cereal packaging bag configured to overlap opposing portions of both side edges of a film-shaped packaging material to close the deaeration gap, and at least the back side of the rice cereal packaging bag A rice cereal packaging bag having a deaeration gap formed therein, a rice cereal packaging bag having a deaeration gap formed on at least one side of the rice cereal packaging bag, and a plastic fiber having heat adhesiveness The present invention provides a rice cereal packaging bag comprising a breathable tape made of a nonwoven fabric and a rice cereal packaging bag comprising a breathable tape made of a heat-adhesive plastic film having a large number of pores.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 3 show a first embodiment of a packaging bag for rice grains according to the present invention. This rice cereal packaging bag is roughly divided into a film-like packaging material 1 for forming a packaging bag main body, and a gas permeable tape 2 for releasing gas in the packaging bag to the outside. And a degassing gap 3 for releasing the gas in the bag to the outside.

[0008] In this embodiment, although not shown, the film-like packaging material 1 is printed on the surface with the type, quality, locality, design, etc. of the rice grains contained in the packaging bag. It is composed of a horizontally long rectangular composite plastic film having heat adhesiveness and airtightness formed by bonding and laminating a transparent nylon film and a transparent polyester film on the upper surface of a polyethylene film.
About the thickness.

In this embodiment, the air permeable tape 2 is made of a non-woven fabric having a width of about 5 mm to 30 mm made of a heat-adhesive plastic fiber. Water repellent treatment is applied to the extent that it does not interfere.

Next, the packaging material 1 is bent from both sides so that the polyethylene film layer of the film-like packaging material 1 configured as described above is located on the inner surface, and is shown in FIGS.
As shown in the figure, the opposing portions 1b, 1b of both side edges 1a, 1a of the packaging material 1 are brought into contact with each other over the entire length so as to be openable and closable, and the breathable tape 2 is attached to the inner surfaces of the opposing opposing portions 1b, 1b. The two sides 2a, 2a of the breathable tape 2 are heated and adhered to the polyethylene film layer of the packaging material 1 so that the middle part of the breathable tape 2 is closer to the middle part of the breathable tape 2 than the bonded parts of the both sides 2a, 2a. A wide non-adhesive portion 2b is formed, the non-adhesive portion 2b forms a gap 3 for deaeration of gas in the packaging bag, and the lower edge 1c of the packaging material 1 is heated and adhered to the bottom portion 4b. Is formed to form a packaging bag for rice cereals having an opening 5 above.

The operation and effect of the rice cereal packaging bag according to the first embodiment of the present invention constructed as described above will be described. For example, rice is accommodated in the packaging bag and the opening 5 is sealed. Then, in a normal state, as shown in FIGS. 1 and 2, the deaeration gap 3 provided in the packaging bag includes both side edges 1 a of the packaging material 1,
Since the opposed portions 1b and 1b of 1a are tightly closed so as to be openable and closable, moisture such as moisture or raindrops infiltrates into the packaging bag from the deaeration gap 3 through the breathable tape 2. This has a great advantage that the stored rice can be prevented from deteriorating and changing its taste and the rice can be stored well for a long period of time.

Also, gas is generated from the stored rice,
When the internal pressure of the packaging bag is increased by the gas in the packaging bag due to the pressure of the packaging bag or the like, as shown in FIG. 1b is naturally pushed open to open the degassing gap 3, so that the gas in the packaging bag can be released to the outside through the gas permeable tape 2, resulting in an increase in the internal pressure of the packaging bag due to the gas in the packaging bag. Do
There is an advantage that the occurrence of troubles such as collapse of the packing bag containing the stacked rice grains and bursting of the packing bag can be reliably prevented.

FIG. 7 shows another example of the air permeable tape 2 according to the first embodiment, in which a heat bonding tape having a large number of air holes 2c is used instead of the nonwoven fabric. Since the air-permeable tape 2 is formed of a plastic film having properties, and the other configuration is the same as that of the first embodiment, the same portions are denoted by the same reference numerals. The effect is almost the same as that of the first embodiment.

FIGS. 4 to 6 show a second embodiment of the packaging bag for rice according to the present invention. The difference from the first embodiment is that the packaging material 1 is different from that of the first embodiment. Side edges 1 of
a, 1a, without abutting the opposing portions 1b, 1b, as shown in FIG.
superimposed on the upper surface of a, and the point of closing and closed openably covering the deaerating gap 3 This overlapping portion 1a _1, the width of the degassing gap 3 in the first embodiment described above This is a point that the width is slightly smaller than the width of the deaeration gap 3 and that the film-shaped packaging material 1 is composed of a composite film described below.

That is, although not shown, the film-like packaging material 1 according to the second embodiment is formed by bonding and laminating an aluminum vapor-deposited film on the upper surface of a polyethylene film via a laminating layer, and is accommodated on the surface. Types of rice cereals,
It is composed of a horizontally long rectangular composite plastic film with heat adhesion and airtightness, which is printed with quality, production area, design, etc., and laminated on top with a transparent nylon film and transparent polyethylene film. ~ 1
It has a thickness of about 50μ.

The other components in the second embodiment, that is, the material of the air-permeable tape 2, the means for forming the deaeration gap 3, the means for forming the packaging bag, and the like are the same as those in the first embodiment. Therefore, the same parts are denoted by the same reference numerals.

Next, the second embodiment of the present invention configured as described above
The operation and effect of the rice cereal packaging bag according to the embodiment will be described, but the description of the same operation and effect resulting from the basic configuration common to the first embodiment will be omitted, and only the different operation and effect will be described. explain.

[0018] In this embodiment, each side edge 1a of the packaging material 1, 1a of the opposing portions 1b, by overlapping 1b, and deaerating gap 3 This overlapping portion 1a ₁ and openably covered closed Because of the blockage, the effect of preventing infiltration of moisture such as moisture and water droplets in a normal state is further improved as compared with the first embodiment. There is an advantage that it can be prevented more reliably.

Further, in this embodiment, the packaging material 1 is composed of a composite film in which an aluminum vapor-deposited film is interposed between various types of plastic films, so that the airtightness and toughness as a rice cereal packaging bag. And the rice grains in the packaging bag can be prevented from being irradiated with sunlight, and stored rice grains can be stored more favorably.

FIG. 8 shows another example of the air permeable tape 2 according to the second embodiment. The heat adhesive tape having a large number of air permeable pores 2c is used in place of the nonwoven fabric. Since the air-permeable tape 2 is formed of a plastic film having the following features, and the other configuration is the same as that of the first embodiment, the same portions are denoted by the same reference numerals, and The effect is almost the same as that of the first embodiment.

Next, FIGS. 9 to 11 show a third embodiment of the packaging bag for rice grains according to the present invention, which is different from the first embodiment described above. The only difference is that degassing gaps 3 are formed on both left and right sides of the rice cereal packaging bag, and thus only two film-like packaging materials 1 and 1 are used. Since the structure, thickness, material of the air-permeable tape 2, width and forming means of the deaeration gap 3, and its closing and opening modes are completely the same as those of the first embodiment, they are the same. Are denoted by the same reference numerals. The operation and effect of the third embodiment are almost the same as those of the first embodiment because the basic configuration is the same, but the opening / closing deaeration gap 3 is formed on the side surface of the packaging bag. Therefore, even when a large number of packaging bags containing rice grains are stacked, there is an advantage that excess gas in the packaging bags can be released more smoothly.

FIG. 12 shows another example of the air permeable tape 2 according to the third embodiment. In place of the above-mentioned non-woven fabric, a heat-adhesive tape having a large number of air-permeable pores 2c is provided. Tape 2 made of plastic film having
Since other configurations are the same as those of the third embodiment, the same portions are denoted by the same reference numerals, and the operation and effect are the same as those of the first embodiment. There is almost no change.

Next, FIGS. 13 and 14 show a fourth embodiment of a rice cereal packaging bag according to the present invention, which is different from the third embodiment in the third embodiment. Only the point that the configuration of the deaeration gap 3 in the second embodiment is adopted instead of the configuration of the deaeration gap 3 in the third embodiment, and other configurations are the same as those of the third embodiment. Since they are the same as in the case, the same parts are denoted by the same reference numerals.

According to the fourth embodiment, substantially the same operation and effect as those of the third embodiment can be obtained.
Since the configuration of the deaeration gap 3 in the second embodiment is adopted as the configuration of the deaeration gap 3, the operation and effect of closing and opening the deaeration gap 3 of the fourth embodiment are provided. Is the same as in the second embodiment.

FIG. 15 shows another example of the air permeable tape 2 according to the fourth embodiment. The heat-adhesive tape 2 has a large number of air-permeable pores 2c in place of the nonwoven fabric. Tape 2 made of plastic film having
Since other configurations are the same as those of the fourth embodiment, the same portions are denoted by the same reference numerals, and the operation and effect are the same as those of the first embodiment. There is almost no change.

Although the main embodiment of the present invention has been described above, the present invention is not limited to this embodiment, but can achieve the object of the invention and do not depart from the gist of the invention. Various design changes are possible.

[0027]

According to the present invention, a film-like packaging material such as a rectangular plastic film having heat adhesion and airtightness is bent so that both side edges of the packaging material are opposed to each other, and the inner surface of the opposed portion is heated. In a rice cereal packaging bag in which both side edges of an air permeable tape having adhesiveness are heated and bonded, and the above-mentioned opposed portion and the non-adhered portion of the air permeable tape form a gap for deaeration of gas in the packaging bag. In normal conditions, the opposing portions are openably and closably closed to close the deaeration gap, to prevent the ingress of moisture such as external moisture, water droplets, and the like. When the internal pressure of the rice grain is increased, the present invention relates to a rice cereal packaging bag characterized in that the opposed portion is pushed open to release gas from the deaeration gap. Has a remarkable effect.

(1) When rice grains are accommodated in a packaging bag and the opening is closed, the deaeration gap provided in the packaging bag normally opens and closes opposing portions of both sides of the packaging material. Since they are fitted together and closed, it is possible to reliably prevent moisture such as moisture or rainwater drops from entering the packaging bag from the deaeration gap via the breathable tape, and to alter or deteriorate the stored rice grains. Taste, rot, etc. can be reliably prevented, and a good preservation effect can be maintained for a long period.

(2) In addition, when gas is generated from the stored rice grains or the packaging bag is pressurized, and the gas inside the packaging bag increases the internal pressure of the packaging bag, Since the opposing parts of both sides are naturally pushed open to open the deaeration gap, the gas in the packaging bag is released to the outside through the breathable tape, which can prevent fermentation of rice grains, etc. It is possible to prevent the quality from being deteriorated, and it is possible to surely prevent the stacking of the packaging bags containing the rice grains from collapsed due to the increase in the internal pressure of the packaging bags, and the occurrence of problems such as the bursting of the packaging bags.

[Brief description of the drawings]

FIG. 1 is a front view showing a rice cereal packaging bag according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a main part taken along line AA of FIG.

FIG. 3 is an explanatory diagram of the deaerated state.

FIG. 4 is a front view showing a rice cereal packaging bag according to a second embodiment of the present invention.

FIG. 5 is an enlarged sectional view of a main part along a line BB in FIG. 4;

FIG. 6 is an explanatory diagram of the deaerated state.

FIG. 7 is an enlarged sectional view of a main part showing another example of the first embodiment of the present invention.

FIG. 8 is an enlarged sectional view of a main part showing another example of the second embodiment of the present invention.

FIG. 9 is a front view showing a third embodiment of the packaging bag for rice cereals according to the present invention.

FIG. 10 is a partial side view of FIG. 9;

FIG. 11 is an enlarged cross-sectional view of a main part along line CC in FIG. 9;

FIG. 12 is an enlarged sectional view of a main part showing another example of the third embodiment of the present invention.

FIG. 13 is a partial side view showing a fourth embodiment of the packaging bag for rice cereals according to the present invention.

FIG. 14 is an enlarged cross-sectional view of a main part along the line DD in FIG. 13;

FIG. 15 is an enlarged sectional view of a main part showing another example of the fourth embodiment of the present invention.

FIG. 16 is a front view showing an example of a conventional rice cereal packaging bag.

FIG. 17 is an enlarged cross-sectional view of a main part along the line EE in FIG. 16;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Film-shaped packaging material 1a * 1a Both side edges 1a ₁ Overlapping part 1b * 1b Opposing part 1c Lower side edge 2 Air permeable tape 2a * 2a Both side edges 2b Non-adhesion part 2c Ventilation pore 3 Deaeration Gap 4 bottom 5 opening

Claims (7)

[Claims] 1. A film-shaped packaging material such as a rectangular plastic film having heat adhesion and airtightness is bent so that both sides of the packaging material face each other, and the inner surface of the facing portion has heat adhesion. By heating and bonding both side edges of the gas permeable tape, and the opposing portion and the non-adhesive portion of the gas permeable tape, in a packaging bag for rice cereal that formed a gap for degassing the gas in the packaging bag, under normal conditions, The opposing portions are opened and closed so as to close the deaeration gap to prevent the entry of moisture such as external moisture and water droplets, and the gas inside the packaging bag increases the internal pressure of the packaging bag. A packaging bag for rice cereal, characterized in that when the opposed portion is pushed open, gas is released from the deaeration gap. 2. The rice cereal packaging bag according to claim 1, wherein the opposite sides of the film-shaped packaging material are abutted against each other to close the deaeration gap. 3. The packaging bag for rice cereal according to claim 1, wherein the film-like packaging material is configured such that opposing portions of both side edges of the film-like packaging material are overlapped to close the deaeration gap. 4. The packaging bag for rice grains according to claim 1, wherein a degassing gap is formed at least on the back side of the packaging bag for rice grains. 5. The packaging bag for rice grains according to claim 1, wherein a degassing gap is formed on at least one side surface of the packaging bag for rice grains. 6. A gas permeable tape made of a nonwoven fabric made of a plastic fiber having heat bonding properties.
3. The packaging bag for rice cereals according to any one of 3, 4, and 5. 7. The packaging bag for rice cereals according to claim 1, wherein the air-permeable tape is formed of a heat-adhesive plastic film having a large number of pores.