JP6816399B2 - Packaging bag - Google Patents

Description

The present invention relates to a packaging bag used for sealing and packaging contents containing liquids such as pickles and simmered dishes, and more particularly to a packaging bag that can be opened so that the contents do not drip when opened.

Conventionally, as the contents containing liquid (juice) and solids such as pickles and simmered foods, various types of packaging bags such as a three-way seal bag, a four-way seal bag, a gassho seal bag, and a self-standing bag have been used, and these contents Is stored in a packaging bag and sealed by aerated packaging or vacuum packaging in a degassed state as much as possible.

However, there is a problem that the liquid (juice) contained in the contents scatters when the package is opened and stains the hands, clothes and surroundings. In order to solve such a problem, the liquid content is poured out in a certain direction along the pouring passage by gradually narrowing the pouring passage of the pouring port portion of the liquid content toward the spout. A liquid packaging bag has been proposed (see, for example, Patent Document 1).

Since the liquid packaging bag of Patent Document 1 has the above-mentioned configuration, the problem that the liquid (juice) contained in the contents scatters when the bag is opened and stains hands, clothes, and the surroundings has been solved. .. However, it is a technology for pouring, and in the case of contents in which solid and liquid are mixed, the contents cannot be taken out unless the part other than the pouring passage is opened, and the part other than the pouring passage is opened. Then, there is still a problem that liquid drips and stains the fingers and the surroundings.

JP-A-2007-326641

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a packaging bag that can be opened so that the contents do not drip when opened.

In order to achieve the above object, the present invention according to claim 1 is composed of a laminated body having at least a heat-sealing layer on the inner surface, and has an upper end joint, a lower end joint, and a side end joint on the peripheral edge. A packaging bag in which the contents containing liquid are hermetically packaged, and a narrow width of air communicating with the inside of the packaging bag at one upper corner portion sandwiched between the upper end joint portion and the side end joint portion. An air introduction section provided with an introduction path is provided in contact with the opening start portion, the air introduction section includes a plurality of the air introduction paths, and the air introduction path is on the side of one upper corner portion side. It is a packaging bag characterized in that it is provided side by side along the end joint .

Further, according to the second aspect of the present invention, in the packaging bag according to the first aspect, the left and right width dimensions of the air introduction path are 5 mm or more and 10 mm or less, and the vertical length of the air introduction path is 10 mm. As mentioned above, it is characterized in that it is 20 mm or less .

The present invention according to claim 3 is characterized in that, in the packaging bag according to claim 1 or 2, a notch is provided at the side end joint portion of the side portion of the air introduction portion. It is a thing.

The packaging bag of the present invention is made of a laminate having a heat-sealing layer at least on the inner surface, has an upper end joint, a lower end joint, and a side end joint on the peripheral edge, and is a package in which contents containing liquid are hermetically packaged. By configuring the bag, an air introduction portion having a narrow width air introduction path communicating with the inside of the packaging bag is provided at the upper corner portion sandwiched between the upper end joint portion and the side end joint portion. By opening, the air introduction path of the air introduction part is opened, the outside air and the inside of the packaging bag are communicated through the air introduction path, and the contents move downward by introducing air into the bag to prevent liquid dripping. Can be planned. In particular, when vacuum-packed, a more excellent liquid dripping prevention effect can be obtained.

It is a top view which shows one Embodiment of the packaging bag which concerns on this invention. FIG. 5 is a cross-sectional view taken along line XX of FIG. It is explanatory drawing which shows the structural example of the laminated body of the packaging bag which concerns on this invention. It is explanatory drawing explaining the state which opened the package containing the contents in the packaging bag which concerns on this invention.

The above invention will be described in detail below with reference to drawings and the like.
1 is a plan view showing an embodiment of the packaging bag according to the present invention, FIG. 2 is a sectional view taken along line XX of FIG. 1, and FIG. 3 is an explanatory view showing a configuration example of a laminated body of the packaging bag according to the present invention. FIG. 4 is an explanatory diagram for explaining a state in which a package containing the contents in the packaging bag according to the present invention is opened. In the figure, A is a packaging bag, A'is a packaging body, and A'' is opened. Package, K is the opening, 1 is the upper end joint, 2 is the lower end joint, 3, 4 is the side end joint, 5 is the upper corner, 6 is the air introduction part, and 6'is the torn air introduction part. , 6a is an air introduction path, 6b is an air introduction path forming joint, 7 is a notch, 8 is a storage part, 9 is a content, 10 is a laminate, 11 is a base material layer, 12 is an intermediate layer, and 13 is heat. The fused layers are shown respectively.

FIG. 1 is a plan view showing an embodiment of a packaging bag according to the present invention, and FIG. 2 is a sectional view taken along line XX of FIG. The packaging bag A of the present invention is composed of a laminate 10 having a heat-sealing layer 13 (see FIG. 3) on at least the inner surface, and the heat-sealing layers 13 of the upper laminate 10 and the lower laminate 10 are formed together. The upper end joint portion 1, the lower end joint portion 2, and the side end joint portions 3 and 4 are provided by superimposing and heat-bonding the peripheral edges thereof, and the content 9 (see FIG. 4) containing a liquid is hermetically packaged in the storage portion 8. It is a thing. The packaging bag A is provided with an air introduction portion 6 having a narrow width air introduction path 6a communicating with the storage portion 8 inside the packaging bag A at the upper corner portion 5 sandwiched between the upper end joint portion 1 and the side end joint portion 3. Is provided.

The air introduction portion 6 provided in the upper corner portion 5 is provided with three vertically long air introduction passages 6a in parallel on the left and right along the side end joint portion 3. The air introduction path 6a is formed vertically in parallel with the side end joint portion 3, and is partitioned by the vertically long joint portion 6b for forming the air introduction path. Of the three air introduction paths 6a, the first air introduction path 6a from the left side is partitioned by the side end joint 3 on the left side. The lower part of each of the three air introduction paths 6a communicates with the storage portion 8, and the upper part is blocked by the upper end joint portion 1. The width dimension of the air introduction path 6a is preferably 2 mm to 15 mm, more preferably 5 mm to 10 mm. The vertical length of the air introduction path 6a is usually preferably about 5 mm to 50 mm, more preferably 10 mm to 20 mm. Is. The seal width (joint width) of the air introduction path forming joint 6b is preferably 2 to 15 mm, more preferably 5 to 10 mm. As shown in FIG. 2, in the air introduction path 6a, the upper laminate 10 and the lower laminate 10 are not adhered to each other, and the joints 6b for forming the air introduction path or the joints 6b for forming the air introduction path and the side ends thereof. It has a flat tubular shape partitioned by the joint portion 3. Further, the number of air introduction paths 6a is not limited to FIG. The number of air introduction paths 6a may be one, but when the package is opened, the side end joint 3 and the air introduction path forming joint 6b may be torn at once, and a sufficient effect of preventing liquid dripping may not be obtained. It is preferable to provide two or more. Further, it is important that the air introduction portion 6 provided with the air introduction passage 6a and the joint portion 6b for forming the air introduction passage is provided in contact with the opening start portion, and is sandwiched between the upper end joint portion 1 and the side end joint portion 4. It can also be provided at the upper corner.

Further, a notch 7 is provided in the side end joint 3 on the left side of the air introduction portion 6, which serves as an opening start portion of the packaging bag A. The notch 7 is provided at a position where the packaging bag A can be torn across the air introduction path 6a and the air introduction path forming joint 6b within the upper and lower lengths of the air introduction path 6a. The notch 7 is for easily starting the tearing and opening of the packaging bag A, and if the packaging bag A can be torn, the shape of the notch 7 can be arbitrarily provided, and the V notch, the I notch, and the tortoise shell type notch can be provided. Alternatively, it may be any of scars.

FIG. 1 shows a state in which the peripheral edge of the packaging bag A is heat-bonded at each joint. However, one of the joints, for example, the lower end joint 2, is opened, and the storage portion of the packaging bag A is opened from the opening. After filling 8 with the contents, it is heat-bonded at the lower end joint 2 and sealed and packaged. Further, as the packaging bag A, in addition to the four-sided seal bag shown in FIG. 1, a three-way seal bag or a self-standing bag can also be used. In these cases, an opening is provided in the side end joint 3 or the side end joint 4, the contents are filled through the opening, and then heat-bonded and sealed.

FIG. 3 is an explanatory diagram showing a configuration example of the laminated body 10 of the packaging bag A according to the present invention. As shown in FIG. 3, the laminated body 10 preferably has a structure in which the base material layer 11, the intermediate layer 12, and the heat-sealing layer 13 are laminated. Further, depending on the performance and quality required for the packaging bag A, it can be simplified into two layers of the base material layer 11 or the intermediate layer 12 and the heat fusion layer 13.

As the base material layer 11 of the laminate 10, since it is a basic material constituting the packaging bag A, a synthetic resin film having excellent mechanical, physical, chemical and the like can be used, and polypropylene can be used. , Polyethylene terephthalate, nylon, polyacrylonitrile, polyvinylidene chloride, polyvinyl alcohol, ethylene / vinyl alcohol copolymer and other films, cellophane and, for example, polylactic acid-based biaxially stretched films derived from plants as starting materials can be used. .. Alternatively, the above film is coated with a barrier resin composition such as polyvinylidene chloride or polyvinyl alcohol to provide a barrier layer, or aluminum, aluminum oxide, silicon oxide, indium oxide, tin oxide, zirconium oxide or the like. An inorganic substance vapor-deposited and provided with a vapor-deposited layer can be used. Further, as these films, usually, the base material layer 11 is often printed, and printability is required. Therefore, a film stretched in the uniaxial direction or the biaxial direction is preferable. Further, the thickness of the film constituting the base material layer 11 may be a thickness that can be maintained at the minimum necessary for strength, rigidity and the like as a basic material, and may be determined in consideration of cost and the like. Usually, it is about 9 to 50 μm.

The intermediate layer 12 is provided when rigidity, light-shielding property, gas barrier property, etc. are required by packaging conditions, transportation conditions, and content protection function conditions, and is a film used for the above-mentioned base material layer 11. A film provided with the barrier layer or the vapor deposition layer described above, a metal foil such as aluminum, iron, copper, or tin can be used. In addition, one or more of these films may be combined and laminated in multiple layers.

The heat-sealing layer 13 is preferably a layer formed of a heat-adhesive resin that can be melted by heat and fused to each other, and may be appropriately selected and used depending on the required quality for the packaging bag A. Low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer, It can be formed by using a resin such as an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, an ethylene-acrylic acid ester copolymer, or an ethylene-methacrylic acid ester copolymer. As a method of laminating the base material layer 11, the intermediate layer 12, and the heat-sealing layer 13, for example, a dry lamination method of laminating using a dry laminating adhesive such as urethane or a polyethylene resin or the like is thermally melt-extruded. The extrusion lamination method of laminating can be used.

FIG. 4 is an explanatory diagram illustrating a state in which the packaging body A'containing the content 9 in the packaging bag A of the embodiment according to the present invention is opened. The operation of the air introduction portion 6 of the packaging bag A of the present invention will be described with reference to FIG. FIG. 4A shows a package A'obtained by filling and sealing the storage portion 8 of the packaging bag A shown in FIG. 1 with the contents 9. The contents 9 to be filled in the package A'include, for example, simmered pork kakuni, Chikuzen boiled, simmered wild vegetables, pickles such as Fukujinzuke and Rakkyo pickles, konjac, soup with ingredients, rice porridge, curry, and apricot. A mixture of liquid and solid such as tofu and konjac, and liquid such as soup and pot soup are preferable, and they are aerated or vacuum-packaged.

As shown in FIG. 4, in the package A', the packaging bag A is placed in parallel with the upper end joint 1 from the notch 7 at the opening start portion, and the air introduction path 6a and the air introduction path forming joint 6b of the air introduction portion 6 are formed. The tear packaging bag A is opened so as to cross. As shown in FIG. 4B, first, when the tear reaches the first air introduction path 6a, the outside air and the storage section 8 communicate with each other through the air introduction path 6a, and the outside air is taken into the storage section 8 in the decompressed state. .. As the tearing progresses, each time the tear reaches the second and third air introduction paths 6a, the outside air communicates with each of the air introduction paths 6a, the outside air is taken into the storage portion 8, and the pressure inside the packaging bag A increases. The intake of outside air ends when the pressure becomes normal. The liquid level of the content 9 gradually drops as the outside air is taken into the storage unit 8. FIG. 4 (c) is opened in a state where the tear reaches the side end joint 4 facing the side end joint 3, the tear piece is removed, and the air introduction portion 6'and the opening K are formed at the upper part. The packaging body A'' is shown. When the opening K is formed as shown in FIGS. 4 (b) and 4 (c), the liquid level of the content 9 is lower than the position of the opening K, so that the liquid level of the content 9 can be prevented from dripping from the opening K. You can plan.

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

[Example 1]
A biaxially stretched nylon film (ONy) with a thickness of 15 μm is used as the base material layer 11, and a linear low-density polyethylene film (LLDPE) with a thickness of 40 μm is used as the heat-sealing layer 13, and gravure printing (GR) is performed on one side of the ONy. Then, a coating solution of a urethane-based anchor coating agent was applied to the printed surface, dried to provide an anchor coating layer (AC), and then low-density polyethylene (LDPE) in which the AC surface of ONy and LLDPE were heat-melted was applied. A laminated body 10 having a structure of <ONy15 μm / GR / AC / LDPE 20 μm / LLDPE 40 μm> was prepared by laminating from a T-die to a thickness of 20 μm by an extrusion sandwich lamination method.

The packaging bag A (outer dimensions: vertical length 170 mm × horizontal length 140 mm) shown in FIG. 1 was produced using the laminated body 10. The air introduction paths 6a of the air introduction section 6 have a vertical length of 20 mm and a horizontal width of 5 mm, and three are provided, and the air introduction path forming joints 6b have a vertical length of 20 mm and a horizontal width of 5 mm. The width (seal width) of the upper end joint 1 and the side end joints 3 and 4 was 8 mm, and the lower end joint 2 was in an unbonded open state in order to enclose the contents 9.

[Comparative Example 1]
The same packaging bag as in Example 1 was produced except that the air introduction unit 6 was not provided.

200 g of water was filled through the openings of the packaging bags of Example 1 and Comparative Example 1, and the openings were heat-bonded to provide a lower end joint 2, and vacuum-packed.

When the packaging bag A of Example 1 provided with the air introduction portion 6 was opened from the notch 7, the contents did not drip, and it was confirmed that the provision of the air introduction portion 6 had an effect of preventing liquid dripping. .. On the other hand, when the packaging bag of Comparative Example 1 in which the air introduction portion 6 was not provided was opened from the notch 7, the contents were dripping and the fingers were wet.

A Packaging bag A'Packaging body A''Opened packaging body K Opening 1 Upper end joint 2 Lower end joint 3, 4 Side end joint 5 Upper corner part 6 Air introduction part 6'Teared air introduction part 6a Air Introductory path 6b Joint for forming air introductory path 7 Notch 8 Storage section 9 Contents 10 Laminated body 11 Base material layer 12 Intermediate layer 13 Heat fusion layer

Claims (3)

A packaging bag composed of a laminate having a heat-sealing layer on at least the inner surface, having an upper end joint, a lower end joint, and a side end joint on the peripheral edge, and containing liquid-containing contents in a sealed package.
An air introduction portion having a narrow width air introduction path communicating with the inside of the packaging bag is provided in contact with the opening start portion at one upper corner portion sandwiched between the upper end joint portion and the side end joint portion. ,
The air introduction unit includes a plurality of the air introduction paths.
A packaging bag characterized in that the air introduction path is provided side by side in parallel on the left and right along the side end joint portion on one upper corner portion side . The packaging bag according to claim 1 , wherein the left and right width dimensions of the air introduction path are 5 mm or more and 10 mm or less, and the vertical length of the air introduction path is 10 mm or more and 20 mm or less . The packaging bag according to claim 1 or 2, wherein a notch is provided in the side end joint portion of the side portion of the air introduction portion.

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