JP7565778B2 - Bag with spray function - Google Patents

Description

The present invention relates to a bag with a spraying function that can spray contents such as fertilizers and pesticides evenly over a wide area.

The application of pesticides and fertilizers in agricultural land such as home vegetable gardens is directly related to the growth of crops and has a significant impact on the yield of crops. One method of applying fertilizer, pesticides, etc. is to spread the contents of a bag or container with a ladle or the like.
However, this method requires the container containing the contents to be moved, and it is difficult to spread the contents over a wide area, especially when a large amount of contents is contained in the container. In addition, the action of scooping up the contents with a ladle and spreading them over a wide area must be repeated frequently, making the spreading process cumbersome.

Therefore, Patent Document 1 discloses a spray bag in which a rectangular bottom portion is provided on the bag for containing the contents, 3 to 15 small holes with a diameter of 4 to 8 mm are formed on the bottom portion, and a bottom paper is attached to the outside of the bottom portion to close the small holes.

Patent Document 2 also discloses a fertilizer bag in which a predetermined number of holes for spreading are cut out along cutting lines, and then the spreading holes are formed by cutting out an inverted V shape.

However, the bag disclosed in Patent Document 1 requires many steps, such as drilling holes in the bottom of the wrapping paper and covering the bottom with a covering seal, and the bag requires the laborious task of peeling off the covering seal when it is used.

In addition, in the bag disclosed in Patent Document 2, a cutting line is printed on one end of the wrapping paper in advance, and the end is cut out along this cutting line with scissors or the like to form a hole for dispensing, which requires a lot of work.

Japanese Patent Application Publication No. 7-264963 Publication No. 6-13634

The present invention was made to solve the problems of the conventional technology as described above, and provides a bag with a dispensing function that can form an opening for dispensing without using tools such as scissors, without having to peel off the seal later, and without requiring labor for opening the bag with good workability.

The invention according to claim 1 is
A bag with a dispensing function is formed by sealing at least a bottom portion of one or more layers of a synthetic resin film,
A notch portion at least at the bottom of the bag for opening the bag;
A cut line is provided on the bottom of the bag with the notch portion as the shortest starting point,
The present invention relates to a bag with a dispensing function, which is formed by providing a curved opening line at an arbitrary position on the cut line.

The invention of claim 2 relates to the bag with a dispensing function described in claim 1, in which a corner is formed at the intersection of the seal on the bottom side of the bag and the right and left sides.

The invention of claim 3 relates to the bag with a dispensing function according to claim 1 or 2, in which the diameter of the dispensing hole formed by the opening line of the bag is smaller than the diameter of the dispensing holes formed at both ends and at any other part.

The invention of claim 4 relates to a bag with a spraying function as described in any one of claims 1 to 3, in which the bag is provided with a notch for opening the bag wider in addition to the notch for spraying.

The invention of claim 5 relates to a bag with a dispensing function according to any one of claims 1 to 4, in which an opening for a handle is provided on the upper edge of the bag.

According to the invention of claim 1, bags can be made by sealing using a synthetic resin film, so that they are easy to manufacture, and since no special tools or devices are required for spraying when used, and since there is little to dispose of after use, they can be used as packaging containers that can be used up in one go.
In addition, by determining the amount of packaging according to the purpose, such as for one spraying or one seedling tray, problems such as overspraying and disposal of remaining contents can be eliminated, and the spraying work efficiency can be improved.

According to the invention of claim 2, a corner is formed at the intersection of the seal at the bottom of the bag and the right and left sides, making it easier to empty the contents, and ensuring that none of the contents remain in the bag and that the entire amount can be discharged.

According to the invention of claim 3, the diameter of the dispersion holes formed at both ends is smaller than the diameter of the dispersion holes formed at other than the ends, which has the effect of adjusting the discharge amount of the contents and dispersing the contents uniformly and over a wide area.

According to the invention of claim 4, by providing a notch in the bag for wide opening, it is possible to transfer the contents to another container or put them in a machine quickly without spilling them.

According to the invention of claim 5, by providing a handle opening at the top of the bag, the bag becomes easier to hold when dispersing the contents, and this has the effect of reducing the amount of work required for dispersing.

FIG. 2 is a front view of the bag with dispersing function according to the present invention. FIG. 1 is a perspective view of a bag with a dispersing function according to the present invention. 1A and 1B are diagrams showing the bottom portion of a bag with a dispersing function according to the present invention, in which (a) is a front view and (b) is a view showing a corner portion. FIG. 2 is a diagram showing the dispersion of the bag with dispersion function according to the present invention after it is opened. 1 is a perspective view of a dispensing bag with a handle opening according to the present invention; FIG. FIG. 2 is a schematic diagram showing a spraying operation using a bag with a spraying function according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the bag with a dispersing function according to the present invention will be described in detail below with reference to the drawings, showing an example of the dispersing bag.
The bag with spraying function of the present invention is a bag for spraying granular contents such as fertilizer, pesticide, etc., and has a spray hole formed in the bottom of the bag that is open. The spray hole is closed until use, and a tear line is provided in the sealed part at the bottom of the bag so that it can be opened when used, and when the sealed part is cut along the tear line, a continuous opening line is formed, opening a spray hole of a size suitable for spraying contents such as pesticides and fertilizers, making it suitable for use in spraying contents over a wide area.
The contents to be dispersed are preferably in the form of powder or granules, but are not particularly limited and may be in the form of a liquid.

As shown in Figures 1-2 and 5, the bag with dispensing function 1 of this embodiment is formed by sealing the left side 12 and right side 13 of the front film 11a and the back film 11b by heat fusion, and further sealing the bottom ends of the front film 11a and the back film 11b together at an angle by heat fusion to form a corner 14 (see Figure 3(b)), thereby forming a bag in which granular contents can be enclosed.

The bag 1 only needs to be sealed at least at the bottom 15. In addition to sealing the left and right edges 12 and 13 of the front and back films 11a and 11b and then sealing the bottom 15 as in this embodiment, the bag 1 may be formed by folding one of the front and back films 11a and 11b, sealing the bottom 15, and then sealing either the left edge 12 or the right edge 13.

The top of bag 1 is open, and the contents can be poured in from the top and stored inside bag 1, but it can also be sealed after filling it with the contents, just like a normal bag.

The size of the bag 1 can be appropriately determined depending on the weight and amount of the contents to be contained.
For example, when spreading fertilizer, pesticides, etc. in a field or vegetable garden, by making the width L of the bag 1 (see Figure 1) the same as the width over which you want to spread the fertilizer, pesticide, etc., it becomes easier to spread the contents evenly over the desired spreading area.

The front film 11a and the back film 11b forming the bag 1 are laminated films made of synthetic resins each having at least one layer, and are preferably made of a thermoplastic resin as long as they can form a storage section by heat fusion and can be fused. Note that there is no particular restriction on the number of layers and the lamination method.
Examples of materials that can be heat-sealed for the front film 11a and the back film 11b include olefin resins such as polyethylene and polypropylene, and in the case of a two-layer or more structure, since printability that affects the appearance of the product is required on the outer surface of the bag, examples include biaxially oriented nylon, biaxially oriented polypropylene, biaxially oriented polyethylene terephthalate, etc.
The inner surface of the bag may be made of an olefin resin such as polyethylene or polypropylene.

When the bottom portion 15 of the bag 1 is cut along a cut line 17 that starts from a notch portion 16 provided at the end of the bottom portion 15, a dispensing hole 19 opens due to an opening line 18 provided at an arbitrary point on the cut line 17, and the contents are dispersed through the dispensing hole 19 (see Figures 2 and 3(a)).

The bottom 15 of the bag 1 is sealed so that when the bottom 15 is cut along the cut line 17, the spray hole 19 is opened. To aid in the sealing of the bag 1, the cut line 17 is preferably formed by providing a notch 16 at the cut start point and forming a cut line continuing thereto using perforations or half cuts, etc. Taking into consideration the film material and processing costs, etc., a method of forming the half cuts using laser processing is preferable (see Figure 3 (b)).

It is desirable to form two or more opening spray holes 19, and the number of holes may be set by adjusting the spray speed. The shape of the spray hole 19 depends on the shape of the opening line 18, and is preferably curved. If the shape is angular, such as a trapezoid, the hole may derail when opening, making it difficult to open.
In addition, when the amount of spray is to be increased, the shape of the seal portion between each spray hole 19 may be diagonally sealed in the same manner as the corners 14 .

4, the diameter of the dispersion holes 19 formed at both ends is made smaller than the diameter of the dispersion holes 19 formed at the other ends, thereby making the dispersion uniform. If the hole diameters are the same, the amount of dispersion will vary, making uniform dispersion impossible.
Since chemicals, fertilizers, etc. that need to be sprayed accumulate at the lower end of the bag 1 and have a tendency to fall more easily through the spray holes 19 at both ends, by making the spray holes 19 at both ends smaller than the other spray holes 19, the chemicals, etc. will fall evenly from all the spray holes 19.

In addition, by having corners 14 that are sealed at an angle by heat fusion, none of the contents remain in the bag until the end when it is sprayed, and the entire amount of the contents can be discharged. The shape of the corners needs only to be sealed at an angle, and they may also be sealed in a curved shape.

In addition, notches 16 may be provided in two or more places for opening the top of bag 1 in addition to the notch 16 for starting cutting at the bottom of bag 1.

The effects of the present invention will be made clearer by showing an example of a bag with a dispersing function according to the present invention. However, the present invention is not limited to this example.

<Preparing herbicide spray bags>
A bag with a dispensing function, as shown in Figure 1, was produced, measuring 300 mm in width and 450 mm in height. The sheet body used had a combination of front substrate/back substrate made of biaxially oriented nylon and polyethylene film. The left side 12, right side 13 and bottom side 15 were sealed, and the bottom side 15 had alternate sealed and unsealed sections created by laser processing, with the seal width of the sealed section remaining after cutting being set to 3.5 mm to 4.5 mm.

<Spraying speed>
The spray bags had five spray holes 19 each, each with a content of 5 kg and 10 kg, and the spray speed was set to about 10 to 15 g/sec per square meter.

After setting and studying the above conditions with the contents as herbicide, it was confirmed that the herbicide was discharged evenly from each spray hole. Furthermore, it was found that no herbicide remained in the bag after spraying was completed, demonstrating that it was possible to spray the entire amount of the contents efficiently.

The present invention can be modified in various ways other than the above-described embodiment without departing from the spirit and scope of the present invention.
For example, the bag 1 may have a carrying opening 20 at the top of the bag 1 (see Figure 5), and a fitting may be provided on the inner surface of the top of the bag 1 so that the top of the bag 1 can be sealed so as to be opened and closed freely.

In addition, when the contents are stored in the bag 1 using the carrying opening 20, it is not necessary to form an opening at the top of the bag. The top of the bag may be sealed in advance, and the carrying opening 20 may be formed by cutting out a portion of the top of the bag.

The present invention allows an opening to be formed by the opening line without using tools such as scissors or removing the seal later, and simply by cutting along the cutting line with good workability. It does not require labor for opening the bag, and an opening for dispensing can be easily formed, making it ideal for use as a bag with a dispensing function.

1: Bag with spraying function 11a: Surface film 11b: Back film 12: Left side 13: Right side 14: Corner 15: Bottom 16: Notch 17: Cut line 18: Opening line 19: Spray hole 20: Opening for handle

Claims (5)

A bag with a dispensing function is formed by sealing at least a bottom portion of one or more layers of a synthetic resin film,
A notch portion for opening the bag is provided at least at the bottom of the bag,
The seal at the bottom of the bag is formed in an uneven shape,
a cut line is provided at a bottom portion of the bag at a position overlapping with the seal formed in the uneven shape, the cut line starting from the notch portion;
The bag with a dispensing function has a curved opening line provided at any position on the cut line. The bag with dispensing function according to claim 1, in which a corner is formed at the intersection of the seal on the bottom side of the bag and the right and left sides. 3. The bag with dispensing function according to claim 1, wherein the hole diameter of the dispensing holes formed at both ends of the bag by the opening line is smaller than the hole diameter of the dispensing holes formed at any other than the ends. 4. The bag with spraying function according to claim 1, wherein the bag is provided with a notch portion for opening widely in addition to the notch portion for spraying. The bag with a dispensing function according to any one of claims 1 to 4, wherein an opening for a handle is provided at the top of the bag.

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