JP2022094073A - Bag with spray function - Google Patents

Abstract

To provide a bag with spray function capable of forming an opening without using scissors or without peeling a seal off.SOLUTION: A bag with spray function has a formation provided with a notch part for opening the bag at least on a bottom part of the bag, and a perforated line by using the notch part as the shortest starting point on a bottom side part of the bag, and further provided with a curved opening line on an optional spot on the perforated line.SELECTED DRAWING: Figure 1

Description

The present invention relates to a bag with a spraying function capable of uniformly spraying contents such as fertilizers and pesticides over a wide range.

The application of pesticides and fertilizers on agricultural lands such as kitchen garden fields is directly related to the growth of crops and has a great effect on the yield of crops. For spraying fertilizers, pesticides, etc., there is a method of spraying the contents of fertilizers, pesticides, etc. contained in a bag or container with a cassotte or the like.
However, the method needs to move with the container itself containing the contents, and it is difficult to spread the contents over a wide range, especially when a large amount of the contents are contained in the container. In addition, it is necessary to frequently repeat the operation of scooping and sprinkling the contents with a handle, which complicates the spraying work.

Therefore, in Patent Document 1, a rectangular bottom surface portion is provided in a bag for accommodating the contents, 3 to 15 small holes having a diameter of 4 to 8 mm are formed in the bottom surface portion, and a bottom paper is formed on the outside of the bottom surface portion. Disclosed is a spray bag in which the small hole is closed by pasting.

Further, Patent Document 2 discloses a fertilizer bag in which a cutting line formed by cutting out a predetermined number of spraying holes is provided, and the spraying holes are formed by further cutting in an inverted ∨ shape.

However, the bag disclosed in Patent Document 1 has many work steps of pre-drilling a hole in the bottom of the wrapping paper and covering the covering seal on the bottom surface, and it is necessary to take time and effort to remove the covering seal at the time of use.

Further, in the bag disclosed in Patent Document 2, a cut line is printed in advance on one end of the wrapping paper, and one end is cut out along the cut line with scissors or the like to form a hole for spraying. , Work was required.

Japanese Unexamined Patent Publication No. 7-264963 Jitsufuku No. 6-13634

The present invention has been made to solve the problems of the prior art as described above, and the man-hours for opening work are improved with good workability without using tools such as scissors and without peeling off the seal later. It is intended to provide a bag with a spraying function which does not need to be necessary and can form an opening for spraying.

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

The invention according to claim 2 relates to the bag with a spraying function according to claim 1, wherein a corner portion is formed at an intersection of a seal at the bottom of the bag and a right side portion and a left side portion.

In the invention according to claim 3, the hole diameter of the spray hole formed by the opening wire of the bag is smaller than the hole diameter of the spray hole formed at both ends as compared with the hole diameter of the spray hole formed at both ends. , The bag with a spraying function according to claim 1 or 2.

The invention according to claim 4 relates to the bag with a spraying function according to any one of claims 1 to 3, wherein the bag is provided with a notch portion for making a large opening other than the notch portion for spraying the bag.

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

According to the invention of claim 1, since a bag can be made by sealing with a synthetic resin film, it is easy to manufacture, and a special instrument, device, etc. for spraying is required for use. However, since there are few items to be disposed of after use, it can be used as a packaging container that can be used up by one use.
In addition, when packaging, by determining the packaging amount according to the purpose, such as for one spraying or one seedling raising box, problems such as excessive spraying and disposal of the remaining contents can be solved, and spraying can be done. It has the effect of improving work efficiency.

According to the second aspect of the present invention, by forming a corner portion at the intersection of the seal on the bottom portion of the bag and the right side portion and the left side portion, the contents can be easily discharged and the contents are contained in the bag. It has the effect of being able to discharge the entire amount.

According to the third aspect of the present invention, the discharge amount of the contents can be adjusted and uniform by being smaller than the hole diameter of the spray hole formed at both ends as compared with the hole diameter of the spray hole formed at both ends. It has the effect of being able to spread the contents over a wide area.

According to the invention of claim 4, by providing the bag with a notch portion for making a large opening, the contents can be quickly transferred to another container or put into a machine without spilling.

According to the invention of claim 5, by providing the opening for the handle on the upper part of the bag, the bag can be easily held when the contents are sprayed, and the spraying work can be reduced.

It is a front view of the bag with a spraying function which concerns on this invention. It is a perspective view of the bag with a spraying function which concerns on this invention. It is a figure which shows the bottom part of the bag with a spraying function which concerns on this invention, (a) is the front view, (b) is the figure which shows the corner part. It is a scatter plot after opening of the bag with a spraying function which concerns on this invention. It is a perspective view of the bag with a spraying function provided with the opening for a handle which concerns on this invention. It is a schematic diagram which shows the spraying work using the bag with a spraying function which concerns on this invention.

Hereinafter, a preferred embodiment of the bag with a spraying function according to the present invention will be described in detail by showing an example of the spraying bag with reference to the drawings.
The bag with a spraying function of the present invention is, for example, a bag for spraying granular contents such as fertilizers and pesticides, and the spraying holes formed at the bottom of the bag are opened. The spray hole is closed until use, and a cut line is provided on the seal part at the bottom of the bag so that it can be opened during use, and it is continuously formed when the seal part is cut off along the cut line. The opening wire opens a spray hole having a size suitable for spraying the contents such as pesticides and fertilizers, and is suitable for spraying the contents over a wide range.
The content to be sprayed is preferably in the form of powder or granules, but may be liquid and is not particularly limited.

In the bag 1 with a spraying function of the present embodiment, as shown in FIGS. 1 and 2, the front surface film 11a and the left side portion 12 and the right side portion 13 of the back surface film 11b are sealed by heat fusion, and further. The lower ends of the front surface film 11a and the back surface film 11b are diagonally sealed by heat fusion so as to form a corner portion (see FIG. 3 (b)) 14 to form a bag, and the contents are granular. Objects can be enclosed.

At least the bottom portion 15 of the seal portion of the bag 1 may be sealed, and the bottom portion portion after sealing the left side portion 12 and the right side portion 13 of the front surface film 11a and the back surface film 11b as in the present embodiment. In addition to sealing 15, the front surface film 11a to the back surface film 11b are bent, the bottom portion 15 is sealed, and then either the left side portion 12 or the right side portion 13 is sealed to seal the bag 1. May be formed.

The upper part of the bag 1 is open, and the contents can be put in from the upper part and stored inside the bag 1, but the contents may be filled and then sealed and sealed in the same manner as a normal bag.

The size of the bag 1 can be appropriately determined according to the weight and amount of the contents to be accommodated.
For example, when spraying fertilizers, pesticides, etc. in fields or vegetable gardens, the width to which fertilizers, pesticides, etc. are to be sprayed and the width L of the bag 1 (see FIG. 1) are made equal, so that the contents can be spread within the target spraying range. It will be easier to spread evenly.

The front surface film 11a and the back surface film 11b forming the bag 1 may be a synthetic resin laminated film composed of at least one layer, and may be capable of forming an accommodating portion by heat welding and welding. Thermoplastic resin is preferred. The number of layers and the method of layering are not particularly limited.
As the front surface film 11a and the back surface film 11b, olefin resins such as polyethylene and polypropylene are exemplified as heat-weldable ones, and in the case of a configuration of two or more layers, the appearance of the product is affected on the outer surface side of the bag. Biaxially stretched nylon, biaxially stretched polypropylene, biaxially stretched polyethylene terephthalate and the like are exemplified because printability and the like are required.
Further, on the inner surface side of the bag, an olefin resin such as polyethylene or polypropylene is exemplified.

When the bottom portion 15 of the bag 1 is cut along the cut line 17 starting from the notch (notch) portion 16 provided at the end of the bottom portion 15, the opening line 18 provided at an arbitrary position on the cut line 17 is provided. The spray hole 19 is opened and the contents are dissipated through the spray hole 19 (see FIGS. 2 and 3 (a)).

The bottom portion 15 of the bag 1 is sealed so that the spray hole 19 opens when the bottom portion 15 is cut along the cutting line 17. The cut line 17 is preferably provided with a notch portion 16 at the cutting start point in order to assist the sealing property of the bag 1, and the cut line connected to the notch portion 16 is preferably formed by perforations, half cuts, or the like, and the film material and processing cost. In consideration of the above, a half-cut forming method by laser processing is desirable (see FIG. 3 (b)).

It is desirable that two or more spray holes 19 to be opened are formed, and the spray speed may be adjusted to set the number of holes. The shape of the spray hole 19 depends on the shape of the opening wire 18, and is preferably curved. With a square shape such as a trapezoid, the derailment occurs when the package is opened, making it difficult to open the package.
Further, when the amount of spraying is to be increased, the shape of the sealing portion between the spraying holes 19 may be diagonally sealed in the same manner as the corner portion 14.

Further, as referred to in FIG. 4, the hole diameter of the spray hole 19 is such that the hole diameter of the spray hole 19 formed at both ends is smaller than the hole diameter of the spray hole 19 formed at other than both ends to make the emission uniform. can. If the pore diameters are the same, the amount of spraying varies, and uniform spraying becomes impossible.
Since chemicals, fertilizers, etc. that require spraying accumulate at the lower end of the bag 1 and tend to fall more from the spray holes 19 at both ends, the spray holes 19 at both ends are smaller than the other spray holes 19. By doing so, the chemicals and the like can be uniformly dropped from the entire spray hole 19.

Further, by having the corners 14 formed by being diagonally sealed by heat fusion, the contents do not remain in the bag until the end when sprayed, and the entire contents can be discharged. The shape of the corner portion may be sealed diagonally or may be further sealed in a curved shape.

In addition to the notch portion 16 for starting cutting of the bottom portion of the bag 1, two or more notch portions 16 may be provided for opening the upper portion of the bag 1 with a large opening.

The effect of the present invention will be clarified by showing an example of the bag with a spraying function according to the present invention. However, the present invention is not limited to this embodiment.

<Making a herbicide spraying bag>
A bag with a spraying function as shown in FIG. 1 having a width of 300 mm and a height of 450 mm was produced. As the sheet body, the combination of the front base material / backing material was composed of biaxially stretched nylon and a polyethylene film. The left side portion 12, the right side portion 13 and the bottom portion 15 are sealed, and the bottom portion 15 is provided with a sealed portion and an unsealed portion alternately by laser processing, and the sealing width of the sealed portion remaining after cutting is 3.5 mm or more. It was set to be 4.5 mm.

<Spraying speed>
The spraying speed was set so that the amount of the contents was about 10 to 15 g / sec per square meter, with the spraying holes 19 having five openings in the spray bags of 5 kg and 10 kg, respectively.

As a result of setting and examining the above conditions using the contents as a herbicide, it was confirmed that the herbicide was uniformly discharged from each spraying hole, and further, no herbicide remained in the bag after the spraying work was completed. It was also found that it is possible to efficiently spray the entire contents.

In addition to the above embodiments, the present invention can be modified in various ways without changing the gist of the present invention.
For example, it may be a spray bag 1 having an opening 20 for carrying by the upper part of the bag 1 (see FIG. 5), and a fitting is provided on the inner surface of the upper part of the bag 1 to cover the upper part of the bag 1. It may be possible to open and close it freely.

Further, when the contents are stored in the bag 1 by using the opening for carrying by hand, the opening does not necessarily have to be formed in the upper part of the bag, and the upper part of the bag is in a pre-sealed state. By cutting off a part of the upper part of the bag, the handbag opening 20 may be formed.

In the present invention, the opening is formed by the opening wire without using tools such as scissors, and without peeling off the seal afterwards, and only by cutting the cutting line with good workability, and the man-hours for opening work are not required. Since an opening for spraying can be easily formed, it is suitably used as a bag with a spraying function.

1: Bag with spray function 11a: Front 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: Handle opening

Claims (5)

A bag with a spraying function in which a bag is formed by sealing at least the bottom portion of one or more layers of synthetic resin film.
A notch that opens the bag at least at the bottom of the bag,
The seal on the bottom of the bag is formed unevenly,
A cut line is provided at the bottom of the bag with the notch as the shortest starting point.
A bag with a spraying function, which is formed by providing a curved opening line at an arbitrary position on the cut line. The bag with a spraying function according to claim 1, wherein a corner portion is formed at an intersection of a seal on the bottom portion of the bag and a right side portion and a left side portion. The first or second claim, wherein the hole diameter of the spray hole formed by the opening wire of the bag is smaller than the hole diameter of the spray hole formed at other than both ends as compared with the hole diameter of the spray hole formed at both ends. Bag with spraying function. The bag with a spraying function according to any one of claims 1 to 3, wherein the bag is provided with a notch portion for making a large opening other than the notch portion for spraying the bag. The bag with a spraying function according to any one of claims 1 to 4, wherein an opening for a handle is provided on the upper portion of the bag.

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