JPH0637215B2 - Bag and manufacturing method thereof - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bag, and more particularly to a mouth-sealing structure in a bag for containing and selling wheat flour, coffee powder, pet food, and the like.

(Prior Art) Conventionally, wheat flour, coffee powder, pet food, etc. have been sold in a relatively small bag 1 as shown in FIG. The bag 1 of this type is mainly made of paper, but is made of various materials such as synthetic resin depending on an object to be stored. Generally, such a bag 1 is provided with a fold portion 2 which is folded in a V shape when flattened on both sides, and the bottom portion thereof is a well-known square bottom sticking.

On the other hand, as shown in FIG. 5, the mouth part is folded back at one end with a predetermined length, and then again (that is, double-folded with a predetermined length so as to wrap around the end). The folded-back end portion 3 was adhered to the wall surface of the bag 1 with the adhesive 4 and closed.

With the conventional bag 1 configured as described above, most people take out the contents when taking out the contents, that is, when opening the mouth.
The mouth is cut off along the alternate long and short dash line 5 in FIG. The reason is that it is much easier to cut the bottom of the adhesive part with a knife or scissors in the closing part that is double-folded and adhered to the wall surface of the bag and to open it, and to peel and open the folded-back part. It was because the mouth after opening was clean.

(Problems to be solved by the invention) Usually, the use of wheat flour or pet food in a general household does not consume all at once, and most use a small amount to temporarily close the bag mouth and Stored until use. However, as mentioned above, when opening the bag by cutting off the closed part from the bottom of the bag, it is necessary to consume a considerable amount at least in the first use, and the extra length of the end part does not appear, which makes temporary closing difficult. Occurred. Even so, due to the difficulty of opening the package, it is the actual situation that the folded back closing portion is cut off and used as described above.

An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a bag that can be temporarily closed even after a small amount of content is used and can be easily opened for the first time.

(Means for Solving the Problem) The bag of the present invention is characterized in that a paper seal is disposed on the mouth part one wall surface side of the bag main body, and the end of the paper seal close to the center of the bag main body is adhered to the bag main body. With the mouth of the main body together with the paper seal and with the paper seal positioned outside, double fold, and the end of the folded paper at the mouth edge of the bag main body facing the bag body Characterized by being bonded to the wall. Further, in the bag manufacturing method of the present invention, a sealing paper is arranged on one wall surface on the mouth side of the bag main body whose bottom is closed, and both ends of the sealing paper in the longitudinal direction of the bag main body are formed on the one wall surface of the bag main body. After adhering, and then opening the mouth of the bag body to fill the contents, cut off the mouth of the bag body together with the paper seal at a position lower than the adhesive portion on the edge of the mouth of the bag body of the paper seal. After that, the mouth portion of the bag body is double-folded together with the paper seal, and the bag paper body is adhered to the other wall surface of the bag body facing the paper mouth end portion of the folded bag body mouth end edge side. It is configured to include.

(Operation) According to the bag of the present invention, the mouth portion of the bag is double folded together with the paper seal that is superposed on one wall surface so that the paper is positioned outside, and the end of the paper seal near the center of the bag body is the bag. Since the end of the folded bag body mouth edge side is bonded to one wall surface of the body, and the other wall surface facing the bag body,
The mouth of the double-folded bag body is completely wrapped in this paper seal to close the mouth. And when opening this mouth, if you break the appropriate part between both ends that are adhered to the wall surface of the bag body of the paper seal, the mouth of the bag body wrapped in the paper seal will surround the bag. The bag is thawed and exposed completely, the mouth is opened and the contents are used in the desired amount.
After that, the mouth is double-folded again, and temporarily closed with an appropriate fastening tool such as a clip.

(Example) Hereinafter, the bag of the present invention will be described in more detail with reference to the example shown in the accompanying drawings.

FIG. 1 shows a mouth closing portion 11 of a bag 10 according to an embodiment of the present invention. The bag 10 of this embodiment is provided with a bag body 12 having V-shaped folds formed on both sides and having a bottom attached to a square bottom. The mouth portion 13 of the bag body 12
As shown in FIG. 2, a paper seal 14 is arranged on the side of one wall surface 12a of the paper, and the paper seal 14 has an end portion 14a near the center of the bag body adhered to one wall surface 12a of the bag body 12 with an adhesive 15. Has been done. The mouth portion 13 of the bag body 12 provided with the paper seal 14 is double-folded with the paper seal 14 on the outside as shown in FIG. That is,
It is folded back once with a predetermined length from the edge, and then folded back so as to wrap the first folded portion again.

In the folded portion of the mouth portion 13 of the bag body 12 and the paper seal 14 which are folded back in this way, the end portion 14b of the paper seal 14 on the edge side of the mouth portion is the other end of the bag body 12 as shown in FIG. It will be located between the wall surface 12b and the first folded back portion of the mouth portion 13. And here is the first paper seal 1
The end portion 14b of No. 4 is adhered to the other wall surface 12b of the bag body 12 which faces the end portion 4b with an adhesive 16 to form the mouth closing portion 11 of the bag 10.

According to such a bag 10, the mouth portion 13 of the bag body 12 is
Not only the paper 14 but also the wall surfaces 12a, 12b of the bag body 12 are not adhered to each other and are completely wrapped in the paper 14 and are closed, so that the contents leak. It never comes out. An unsealing tape 17 extending in the width direction is attached to the inner surface of the paper seal 14 at an appropriate place between both ends 14a and 14b adhered to the wall surfaces 12a and 12b of the bag body 12, respectively.

When opening the mouth-closing part 11 of the bag 10, first, the end of the opening tape 17 is pulled up to tear the sealing paper 14 in a straight line in the width direction, whereby the bag body 11 wrapped in the sealing paper 14 is cut. The double turn-around mouth portion 13 is uncovered so that it is completely exposed. This allows the user to
3 is opened, the required amount of content is taken out, the mouth portion 13 is folded back again, and it is provisionally closed until the next use with an appropriate stopper or tightening tool (not shown) such as a clip.

By the way, when the bag main body 12 is filled with contents, a machine is used to suck and spread both wall surfaces 12a and 12b of the mouth 13 as shown by arrows in FIG. The presence of the paper seal 14 in which only the end portion 14a is adhered to the wall surface 12a of the bag body 12 is inconvenient. Therefore, until the bag main body 12 is filled with the contents, as shown in FIG.
It is temporarily fixed to the wall surface 12a at 8. In general, in the case of this type of bag, a so-called trimming process is adopted to cut the bag mouth, that is, the edge of the mouth portion, in order to make the height of the bag body 12 constant just before the mouth closing step, regardless of the presence or absence of the paper seal. Has been done. Therefore, if the bag main body 12 filled with the contents is cut below the bonding portion of the mouth end edge side end 14b of the paper seal 14 by this trimming process, no special process is added. The bag 10 (FIG. 2) immediately before closing is obtained.

In addition, although the bag main body formed of a single layer has been described as an example in the above-described embodiment, the present invention is not limited to this and may be a multi-layer bag main body. Also, "sealed paper"
However, this does not mean that it is made of paper, but includes various materials such as synthetic resin film and metal foil.

(Effects of the Invention) As described above, according to the bag of the present invention, since the opening can be easily opened without cutting the opening, the opening is temporarily closed even after a small amount of content is used. Can be saved.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing a mouth closing portion of a bag according to an embodiment of the present invention, and FIG. 2 is a state immediately before forming a mouth closing portion of a bag according to an embodiment of the present invention. Fig. 3 is a partial sectional view showing the mouth of the bag body, Fig. 3 is a sectional view showing how the paper seal is attached to the mouth before filling the bag body with contents, and Fig. 4 is conventional. FIG. 5 is a perspective view schematically showing a bag containing wheat flour, coffee powder, pet food or the like which is generally sold, and FIG. 5 shows a closed state of the mouth portion of the conventional bag of this type shown in FIG. FIG. 5 is a cross-sectional view taken along the line VV of FIG. 4 to show. 10 ... bag, 11 ... mouth closure part, 12 ... bag body, 1
2a, 12b ... wall surface, 13 ... mouth, 14 ... sealing paper, 14a ... end near the center of the bag body, 14b ... end of bag body mouth edge, 15,16 ... adhesive.

Claims (2)

[Claims] 1. A paper seal is arranged on the wall surface side of the mouth of the bag body,
The end portion of the paper seal near the center of the bag body is adhered to the bag body,
The mouth of the bag body is double folded with the paper seal and the paper seal positioned outside, and the end of the folded paper on the edge of the mouth of the bag body faces the bag body. A bag characterized by being adhered to other wall surfaces. 2. A paper seal is arranged on one wall surface of the bag body whose bottom is closed on the mouth side, and both ends of the paper seal in the longitudinal direction of the bag body are adhered to the one wall surface of the bag body, After opening the mouth of the bag body and filling the contents, cut off the mouth of the bag body together with the paper seal at a position lower than the adhesive portion on the edge of the mouth of the bag body of the paper seal. The method for producing a bag, which comprises double-folding the mouth portion together with the paper seal, and adhering the folded paper sheet end portion on the edge end side of the folded bag body mouth portion to the other wall surface of the bag body that faces.