JPH11208732A - Packaging bag for rice and grain - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent water from entering from the outside by keeping a packaging bag in an approximately sealed condition in a normal condition, and to discharge the excessive gas outside when the internal pressure of the packaging bag is increased with the gas in the packaging bag. SOLUTION: A packaging bag for rice and grain comprises an inner layer consisting of a permeable packaging material 1 and an outer layer consisting of a water-repellent and gas-tight packaging material 2 by using a lamination packaging material 3 where the heat-adhesive, water-repellent and gas-tight film-like packaging material 2 is laminated on the surface of the heat-adhesive and permeable film-like packaging material 1. A non-adhesion part between the packaging material 1 of the inner layer and the packaging material 2 of the outer layer is provided at an appropriate part of a permeable part 1b of the packaging material 1 of the inner layer, a flow passage 6 for deaeration comprising a gap 5 with appropriate width and length is formed of the non- adhesion part, and a discharge port 7 of the gas in the packaging bag is provided at least on one end part of the flow passage 6 for deaeration.

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. 8 and 9, for example, as shown in FIGS. 8 and 9, a rectangular plastic film a having heat-adhesive properties is bent so that both side edges b, b of the plastic film a are spaced at a predetermined distance. c, and the taped nonwoven fabric d made of a plastic fiber having heat adhesion and air permeability is applied to the inner surface of the facing portion,
The edges e, e on both sides are heat-bonded to the edges b, b on both sides of the plastic film a, and the lower edge f of the bent plastic film a is heat-bonded to form a bottom, and A packaging bag for rice cereals provided with an opening g is 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]

Means for Solving the Problems As a means for solving the above-mentioned problems and achieving the object, the present invention provides a film-like packaging material having heat-adhesiveness and air-permeability. Using a laminated packaging material on which a film-like packaging material having water repellency and airtightness is layered, an inner layer is formed by the packaging material having air permeability, and the packaging material having water repellency and airtightness is used. A packaging bag for rice grains comprising an outer layer according to the present invention, wherein a non-adhesive portion between the inner layer packaging material and the outer layer packaging material is provided at an appropriate position of the ventilation portion of the inner layer packaging material. A deaeration channel comprising a gap having an appropriate width and length is formed, and at least one end of the deaeration channel is provided with a gas discharge port in the packaging bag. The present invention provides a packaging bag for rice grains.

Further, the present invention relates to a rice cereal packaging bag constructed as described above, wherein gas discharge ports in the packaging bag are provided at both ends of a degassing flow path, A rice cereal packaging bag comprising a heat-adhesive plastic film provided with vent holes for the inner layer and a gas-permeable nonwoven fabric made of plastic fiber having heat adhesion and air permeability. It is intended to provide a rice cereal packaging bag thus constituted.

[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. and which, the rice such packaging bag, a large number of plastic films consisting of F ₁ breathable packaging material 1 on the surface of rectangular shape having a plural rows arranged heating adhesion ventilation unit 1b consisting of the vent hole 1a in the longitudinal direction , this breathable packaging material 1 and the same shape, the university, the water-repellent comprising a laminated plastic film F ₂ nylon film and a polyester film having a heat adhesive, laminated packaging material 3 and the airtight packing material 2 was deposited heating layer Is configured as a material.

In the laminated packaging material 3, a required portion of the back surface of the water-repellent, airtight packaging material 2 facing each ventilation portion 1b of the gas-permeable packaging material 1 is made of a heat-adhesion preventing ink in advance. Since the printing layer 4 is formed, even if the above-mentioned two packaging materials 1 and 2 are heated and layered, the ventilation holes 1a of the ventilation portions 1b of the breathable packaging material 1 are not blocked and are not closed. Adhesive part 1
c is formed, and the non-adhesive portion 1c forms a deaeration channel 6 formed by a vertically rectangular gap 5 between the packaging materials 1 and 2, and in this embodiment, A gas outlet 7 is formed only at the lower end of the deaeration channel 6.

[0009] In order to form the inner layer of the packaging bag with the two air-permeable packaging materials 1 and 1, the two air-permeable packaging materials 1 and 2 having the same configuration and the same size as described above are used. 1 is an inner surface, and the three sides other than the upper side are heat-bonded to form a packaging bag for rice grains having an opening 8 at the top. In this embodiment, two deaeration channels 6 each having a vertically elongated narrow width on both sides of the front and back sides and having a gas discharge port 7 only at the lower end are provided.

Next, the operation and effect of the rice cereal packaging bag according to the first embodiment configured as described above will be described. When airtight, the air-permeable packaging material 1 constituting the inner layer of the packaging bag is entirely covered with the water-repellent, air-tight packaging material 2 so that the air can be removed from the air-permeable packaging material 2. Since only the gas outlet 7 provided only at the lower end of the gas passage 6 communicates, moisture such as moisture or rainwater drops from each vent 1a of each vent 1b to the packaging bag. There is a great advantage that the rice can be effectively prevented from infiltrating into the inside, and the stored rice is surely prevented from deteriorating and changing its taste, and the rice can be stored well for a long period of time.

Further, 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 pressurization of the packaging bag, the gas in the packaging bag is removed from the air-permeable packaging material 1 as schematically indicated by an arrow in FIG. Since the air is discharged from each vent 1a to the outside through the discharge port 7 through the deaeration flow path 6, the stacked rice grains are accommodated due to an increase in the internal pressure of the packaging bag due to the gas in the packaging bag. There is an advantage that occurrence of troubles such as collapse of the packing bag and bursting of the packing bag can be reliably prevented.

Next, FIG. 4 shows another example of the air-permeable packaging material 1 in the first embodiment, in which the plastic film having a large number of air holes 1a is replaced with a heat-adhesive material. And a breathable wrapping material 1 formed of a plastic fiber-made rectangular nonwoven fabric C having breathability, and the other configuration is the same as that of the first embodiment. The reference numerals are used, and the operation and effect are almost the same as those of the first embodiment.

FIG. 5 shows a second embodiment of a rice cereal packaging bag according to the present invention. What is different from the first embodiment is that each deaeration channel is different from that of the first embodiment. The other configuration of the second embodiment, that is, the material, structure, water repellency, and airtightness of the gas permeable packaging material 1 is only the point that the gas discharge ports 7 and 7 are provided at the upper and lower end portions of 6. Of the wrapping material 2,
Since the structure and the means for forming the deaeration channel 6 are the same as those in the first embodiment, the same parts are denoted by the same reference numerals.

In the second embodiment, the deaeration channel 6
Gas outlets 7, 7 are provided at the upper and lower ends of the package, so that there is an advantage that the gas in the packaging bag can be released smoothly and quickly as compared with the first embodiment, but on the other hand, ,
The effect of preventing moisture from penetrating into the packaging bag is somewhat inferior. Although not shown in the drawings, the second embodiment has a heat adhesive property and a gas permeability as another example of the gas-permeable packaging material 1 as in the case of the first embodiment. A rectangular nonwoven fabric C made of plastic fiber can be used.

FIG. 6 shows a third embodiment of the packaging bag for rice grains according to the present invention. The difference from the first embodiment is that a large number of air holes 1a are provided. The air-permeable packaging material 1 provided with a plurality of vents 1b in the lateral direction is used, and the lateral deaeration channels 6, 6 are provided on both sides of the packaging bag along the vents 1b. The material and structure of the air-permeable packaging material 1 and the water-repellent and air-tight packaging material 2 including the point that the gas discharge port 7 is provided only at one end of the deaeration channels 6 and 6 Since the means for forming the deaeration channel 6 are the same as those in the first embodiment, the same parts are denoted by the same reference numerals, and their operations and effects are almost the same as those in the first embodiment. There is no place.

Although illustration is omitted, the third
In the second embodiment, similarly to the first embodiment, another example of the air-permeable packaging material 1 can use a plastic fiber square nonwoven fabric C having heat adhesion and air permeability. It is.

FIG. 7 shows a fourth embodiment of a packaging bag for rice cereals according to the present invention, which is different from the third embodiment in that each deaeration channel is different. The other configuration in the fourth embodiment, that is, the material, structure, water repellency, and airtightness of the gas permeable packaging material 1 is only the point that the gas discharge ports 7, 7 are provided at both left and right end portions of 6. Of the wrapping material 2,
Since the structure and the means for forming the deaeration channel 6 are the same as those in the third embodiment, the same portions are denoted by the same reference numerals.

In the fourth embodiment, the deaeration channel 6
The gas discharge ports 7, 7 are provided at the left and right ends of the package, so that there is an advantage that the gas in the packaging bag can be released smoothly and promptly as compared with the third embodiment, but on the other hand, ,
The effect of preventing moisture from penetrating into the packaging bag is somewhat inferior. Although not shown in the drawings, the fourth embodiment has a heat adhesive property and a gas permeability as another example of the gas-permeable packaging material 1 as in the case of the third embodiment. A rectangular nonwoven fabric C made of plastic fiber can be used.

Further, although not shown, as another embodiment of the other than the above of the present invention, a breathable packaging material 1 having a large number of vent holes 1a on the whole surface of the plastic film F ₁ having a heating adhesion This breathable packaging material 1 may be used.
By forming a printing layer 4 of a desired shape and a desired direction on the back surface of the water-repellent, airtight packaging material 2 by using a heat-adhesion-preventing ink, the two packaging materials 1 and 2 are heat-bonded. When the laminated packaging material 3 is formed, the non-adhesive portion 1c having a desired shape and a desired direction can be formed. Therefore, if a packaging bag is produced using the laminated packaging material 3, a desired shape and a desired direction for deaeration can be obtained. A rice cereal packaging bag having the flow path 7 is obtained.

Although the main embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, the laminated wrapping material 3 is folded from both sides and the side edges thereof are Can be naturally applied to a so-called "gassing type packaging bag" and a "butt type packaging bag" which are produced by bonding at the middle part of the packaging bag. In short, the object of the present invention can be achieved and Various designs are possible without departing from the gist.

[0021]

According to the present invention, there is provided a laminated packaging in which a film-like packaging material having heat adhesion, water repellency and airtightness is laminated on the surface of a film-like packaging material having heat adhesion and air permeability. A packaging bag for rice cereals, wherein the inner layer is composed of the above-described air-permeable packaging material, and the outer layer is composed of the above-mentioned water-repellent, air-tight packaging material. In the right place of the ventilation part, a non-adhesive part between the inner layer packaging material and the outer layer packaging material is provided, and by this non-adhesive part,
A deaeration channel comprising a gap having an appropriate width and length is formed, and at least one end of the deaeration channel is provided with a gas discharge port in the packaging bag. Since the present invention relates to a rice cereal packaging bag, the following useful and remarkable effects are exhibited.

(1) When rice grains are stored in the packaging bag and the opening is closed, the ventilation portion provided in the packaging bag normally has
Since it is covered with a water-repellent, airtight packaging material and only the end of the degassing channel is in communication with the outside, moisture such as moisture or rainwater drops enter the packaging bag from the ventilation part. Infiltration can be effectively prevented, and the quality of the stored rice grains deteriorates,
Corrosion can be reliably prevented, and a good preservation effect can be maintained for a long period of time.

(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, The gas is discharged from the vent hole of the ventilation part through the deaeration flow path to the outside through the discharge port opened at the end of the flow path, so that fermentation of rice cereals can be prevented, and the quality is reduced. In addition to the above, it is possible to reliably prevent collapse of the stacked packaging bags containing rice grains and rupture of the packaging bags caused by an increase in the internal pressure 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 enlarged sectional view of a main part taken along line BB of FIG. 1;

FIG. 4 is an enlarged sectional view of a main part showing another example of the first embodiment.

FIG. 5 is a front view illustrating a rice cereal packaging bag according to a second embodiment of the present invention.

FIG. 6 is a front view showing a third embodiment of the packaging bag for rice cereals according to the present invention.

FIG. 7 is a front view showing a fourth embodiment of the packaging bag for rice cereals according to the present invention.

FIG. 8 is a front view showing an example of a conventional packaging bag for rice cereals.

FIG. 9 is an enlarged cross-sectional view of a main part along line CC in FIG. 8;

[Explanation of symbols]

F ₁ plastic film 1 air-permeable packaging material 1a air hole 1b air-permeable portion 1c non-adhesive portion F ₂ laminated plastic film C non-woven fabric 2 water-resistant and air-tight packaging material 3 laminated packaging material 4 printing layer of ink for preventing adhesion 5 gap 6 removal Gas flow path 7 Gas outlet 8 Opening of packaging bag

Claims (4)

[Claims] 1. A laminated packaging material in which a film-like packaging material having heat adhesion, water repellency, and airtightness is layered on the surface of a film-like packaging material having heat adhesion and air permeability. ,
A packaging bag for rice cereals, wherein the inner layer is constituted by the wrapping material having air permeability, and the outer layer is constituted by the wrapping material having water repellency and airtightness. Wherein a non-adhesive portion between the inner layer packaging material and the outer layer packaging material is provided, and the non-adhesive portion forms a deaeration flow path comprising a gap having an appropriate width and length. A packaging bag for rice cereals, wherein a gas discharge port in the packaging bag is provided at at least one end of the air passage. 2. The packaging bag for rice grains according to claim 1, wherein gas discharge ports in the packaging bag are provided at both ends of the deaeration flow path. 3. The packaging bag for rice cereals according to claim 1, wherein the air-permeable packaging material of the inner layer is constituted by a heat-adhesive plastic film provided with a large number of ventilation holes. 4. The packaging bag for rice cereals according to claim 1, wherein the air-permeable packaging material of the inner layer is made of a nonwoven fabric made of plastic fiber having heat adhesion and air permeability.