JP2018079946A - Packaging bag, and manufacturing method of packaging bag with mounting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag capable of easily determining whether or not an edge of an opening is in a normal state, after inserting or adhering a mounting member in the opening.SOLUTION: A packaging bag A made of a sheet material has an opening 13 in which one part in a peripheral edge is not adhered. At a peripheral edge portion which is not adhered for constituting the opening 13, a mark part 14 is provided for showing a surface shape of the peripheral edge portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging bag used by attaching an attachment member such as a mouthpiece to an opening, and a method for manufacturing a packaging bag with an attachment member.

  Patent Document 1 discloses a packaging bag composed of a pair of side sheets and a bottom sheet. In the packaging bag of Patent Document 1, the bottom sheet is folded in two up and down so that the crease faces upward, and a pair of side sheets are arranged so as to sandwich the bottom sheet, on both sides and the lower side of the side sheet. Along with this, the side sheets are bonded together, and the side sheets and the bottom sheet are bonded together to form a bag. A mouthpiece is attached to the upper side portion of the packaging bag.

JP 2007-55649 A

  By the way, the operation | work which attaches a mouthpiece with respect to a packaging bag as disclosed by patent document 1 is performed as follows, for example. First, a packaging bag having an opening in which side sheets are not bonded to each other at a part of the periphery is prepared. And a mouthpiece is inserted in the opening part of a packaging bag, and a side sheet is bonded together while adhering a side sheet and a mouthpiece as the state which pinched | interposed the mouthpiece between side sheets.

  Here, when the mouthpiece is inserted into the opening portion of the packaging bag, the opening portion and the mouthpiece come into contact with each other, and the edge of the opening portion is bent or wrinkled, and the mouthpiece is adhered in that state. There is a case. Therefore, in terms of quality assurance and the like, it is necessary to determine whether or not the edge of the opening of the packaging bag is in contact with the mouthpiece in a normal state without bending or wrinkles.

  The present invention has been made in view of such circumstances, and its purpose is to easily determine whether or not the edge of the opening is in a normal state after the attachment member such as a mouthpiece is inserted or bonded to the opening. It is in providing the manufacturing method of the packaging bag which can be discriminate | determined in this and a packaging bag with an attachment member.

  A packaging bag for achieving the above object is a packaging bag made of a sheet material, and has an opening part in which a part of a peripheral edge is unbonded, and an unbonded peripheral part constituting the opening part. In addition, a mark portion indicating the surface shape of the peripheral portion is provided.

The said packaging bag WHEREIN: It is preferable that the said mark part is the linear form along the unbonded peripheral part which comprises the said opening part, or a scale shape.
The manufacturing method of a packaging bag with an attachment member for achieving the above object includes an insertion step of inserting an attachment member into the opening of the packaging bag, an unbonded peripheral portion forming the opening, and the attachment member And a state of the marking portion is confirmed after at least one of the insertion step and the bonding step.

  According to the above configuration, after attaching the attachment member to the opening of the packaging bag, checking the state of the mark part, for example, the mark part formed in a straight line is not interrupted or bent, or scaled By confirming whether or not the scale intervals of the mark portions formed on the surface are uneven, it is possible to easily grasp changes in the shape of the edge of the opening, such as bending or wrinkles. Thereby, it can be easily determined whether or not the edge of the opening is bonded to the mouthpiece in a normal state.

  According to the present invention, it is possible to easily determine whether or not the edge of the opening is in a normal state after the attachment member is inserted or bonded to the opening.

(A) is a perspective view of a packaging bag, (b) is an exploded perspective view of a packaging bag. The enlarged front view of the upper part of a packaging bag. The enlarged front view of the upper part of the packaging bag which attached the mouthpiece. The enlarged front view of the upper part of the packaging bag (when a bending part arises) which attached the mouthpiece. The enlarged front view of the upper part of the packaging bag (when wrinkles arise) which attached the mouthpiece. The enlarged front view of the upper part of the packaging bag of a modification example. The enlarged front view of the upper part of the packaging bag (when wrinkles arise) of the example of a change.

Hereinafter, an embodiment of the present invention will be described.
As shown in FIGS. 1A and 1B, the packaging bag A includes a bag-shaped bag body 10 made of a sheet material. The bag body 10 includes a horizontally-long rectangular bottom sheet 11 that is folded in two so that the crease faces upward, and a pair of vertically-long rectangular side sheets 12 that are disposed so as to sandwich the bottom sheet 11. Has been. The bag body 10 is in a state in which a pair of side sheets 12 are overlapped with the bottom sheet 11 interposed therebetween, and the left side part, the right side part, and the lower side part are bonded to each other so that the upper side part can be opened. Is formed. In the present embodiment, the upper side portion of the bag body 10 constitutes the opening portion 13 in which a part of the periphery of the bag body 10 is not bonded. In the drawing, a region to which dots are given indicates a portion where the sheet materials are bonded to each other.

  A pair of reinforcing members 20 are attached to both side edge portions of the bag body 10. The reinforcing member 20 is a columnar member having a U-shaped cross section (groove shape) that covers an adhesive portion at the edge of the bag body 10 from the outside. Both reinforcing members 20 are integrally fixed to the end portion and both side edge portions of the upper edge portion of the bag body 10.

  As shown in FIG. 1A, the packaging bag A is used by attaching an opening 30 as an attachment member to the opening 13. Specifically, the mouthpiece 30 includes a cylindrical tube portion 31 that opens up and down. A mounting portion 32 that protrudes in the radial direction is provided at the lower portion of the cylindrical portion 31. A male screw 31 a with which a cap (not shown) is engaged is provided on the outer periphery of the upper portion of the cylindrical portion 31. In addition, a flange 33 protruding in the radial direction from the mounting portion 32 is provided on the upper portion of the mounting portion 32 in the cylindrical portion 31. While inserting the attachment portion 32 of the mouthpiece 30 into the opening portion 13 of the packaging bag A, and bonding the peripheral surface of the attachment portion 32 and the opening portion 13 (upper side portion of the bag body 10) of the bag body 10, The mouthpiece 30 is attached to the opening 13 of the packaging bag A by sequentially performing the bonding process of bonding the side sheets 12 of the opening 13 together. Thereby, a packaging bag with a mouthpiece (packaging bag with an attachment member) is obtained.

  Here, as shown in FIGS. 1A and 2, the upper side portion of the packaging bag A, that is, the outer surface of the non-bonded peripheral portion constituting the opening portion 13 is a mark indicating the surface shape of the peripheral portion. A portion 14 is provided. The mark part 14 is displayed as a visible straight line along the edge of the opening 13 (the upper side of the packaging bag A). The mark portion 14 is located at a position near the edge of the opening portion 13, more specifically, when the mouthpiece 30 is attached to the packaging bag A, when viewed from an oblique angle of 45 degrees above the flange 33 of the mouthpiece 30. It is provided at a position hidden behind.

Next, the operation of this embodiment will be described.
As shown in FIGS. 3 to 5, the packaging bag A according to the present embodiment confirms the state of the mark 14 after the mouthpiece 30 is bonded to the opening 13 (after the bonding process). It is possible to determine whether or not the edge of the opening 13 is bonded to the mouthpiece 30 in a normal state. That is, as shown in FIG. 3, when the opening 13 of the packaging bag A is in a normal state without bending or wrinkles, the marking 14 is linear along the upper side of the packaging bag A in front view. appear.

  On the other hand, as shown in FIG. 4, when a part of the edge of the opening 13 of the packaging bag A is bent inward and a bent part 40 is generated, the mark part 14 is a part of a straight line when viewed from the front. Seems to be broken. Moreover, as shown in FIG. 5, when the ridge 41 has arisen in the edge of the opening part 13 of the packaging bag A, in the front view, the mark part 14 seems that the part or the whole bent | curved. Thus, according to the configuration of the packaging bag A of the present embodiment, it is easy to check whether or not the edge of the opening 13 is bonded in a normal state by checking the state of the mark 14 after the bonding step. Can be determined.

Next, the effect of this embodiment will be described.
(1) The packaging bag A made of a sheet material has an opening 13 in which a part of the periphery is not bonded. A mark portion 14 indicating the surface shape of the peripheral portion is provided on an unbonded peripheral portion constituting the opening 13.

According to the said structure, it can be discriminate | determined easily whether the edge of the opening part 13 is adhere | attached in the normal state by confirming the state of the mark part 14 after an adhesion | attachment process.
(2) The marking portion 14 is provided so as to be visible.

According to the said structure, the state of the mark part 14 after an adhesion process can be confirmed with an operator's eyes. Therefore, it is not necessary to use a device such as a camera when checking the state of the marking portion 14.
(3) The marking part 14 is formed in a straight line.

  According to the said structure, the surface shape of the part in which the marking part 14 is formed can be judged by whether the linear marking part 14 is interrupted or it is bent. Therefore, when confirming the mark part 14 with a human eye, it can be intuitively determined whether the edge of the opening is adhered in a normal state. Further, when the mark portion 14 is confirmed by image analysis using a camera or the like, the analysis process can be simplified.

(4) The mark portion 14 is provided at a position near the edge of the opening 13 (a position hidden behind the mouthpiece 30).
According to the said structure, the influence of the marking part 14 given to the designability of the packaging bag A can be made small.

In addition, the said embodiment can also be changed and implemented as follows. Moreover, it is also possible to implement combining the structure of the said embodiment and the structure shown in the following modified examples suitably.
-The shape of the mark part 14 will not be specifically limited if it is a shape which changes according to the surface shape of the peripheral part which comprises an opening part. For example, as shown in FIG. In the case of the scale-shaped mark portion 14, as shown in FIG. 7, when the ridge 41 is formed on the edge of the opening portion 13, the interval of the scale changes (for example, from an equal interval to a nonuniformity). Thus, it can be determined that the edge of the opening 13 is not in a normal state.

  -Mark 14 may be invisible. For example, the mark 14 is visible only under special conditions such as when ultraviolet rays are irradiated. When configured in this manner, the marking portion 14 becomes invisible during normal times that are not in a special condition. Therefore, it is possible to avoid the design properties of the packaging bag A from being impaired by the marking portion 14. Further, when the state of the mark portion 14 is confirmed by image analysis using a camera or the like, the mark portion 14 (for example, a mark portion that can be confirmed by an infrared camera) that is not always visible can be used.

  -The position of the mark part 14 will not be specifically limited if it is the range of the part to which attachment members, such as the mouthpiece 30, adhere | attach in the opening part 13 (unbonded peripheral part which comprises the opening part 13). . Moreover, the mark part 14 may be provided only in the one side of the opening part 13, and may be provided in both sides.

  -The formation position of the opening part 13 in the periphery of the packaging bag A is not specifically limited, For example, the opening part 13 may be provided in the side part of the packaging bag A, or diagonally upper part. Moreover, the opening part 13 may be provided in the several position of the packaging bag A. FIG.

  -The structure of the packaging bag A is not specifically limited, What is necessary is just to have the opening part 13 and to consist of sheet materials. For example, the reinforcing member 20 and the bottom sheet 11 may be omitted. Also, the material of each sheet material constituting the bag body 10 is not particularly limited, such as made of synthetic resin or paper.

  The configuration of the mouthpiece 30 is not limited to the configuration described in the above embodiment. Further, the attachment member is not limited to the mouthpiece 30 and may be any member as long as it is inserted into the opening 13 of the packaging bag A and adhered to the opening 13.

  -In the said embodiment, although the operation | work which confirms the state of the mark part 14 was performed after the adhesion process, the edge of the opening part 13 is a normal state before the adhesion process by performing the said operation | work after an insertion process. It may be determined whether or not. Moreover, you may perform the operation | work which confirms the state of the marking part 14 after each process after an insertion process and an adhesion process.

Next, the technical idea that can be grasped from the embodiment and the modified examples will be described below.
(A) The packaging bag is provided so that the mark portion is visible.
(B) The marking portion is provided in the packaging bag so as not to be visible.

  A ... packaging bag, 10 ... bag body, 11 ... bottom sheet, 12 ... side sheet, 13 ... opening, 14 ... marking part, 20 ... reinforcing member, 30 ... mouthpiece, 31 ... cylindrical part, 31a ... male screw, 32 ... mounting portion, 33 ... flange, 40 ... bent portion, 41 ... ridge.

Claims (3)

A packaging bag made of sheet material,
Having an opening in which a part of the periphery is unbonded;
The packaging bag characterized by the marking part which shows the surface shape of the said peripheral part being provided in the non-adhering peripheral part which comprises the said opening part.   The packaging bag according to claim 1, wherein the mark portion has a linear shape or a scale shape along an unbonded peripheral edge portion constituting the opening portion. An insertion step of inserting an attachment member into the opening of the packaging bag according to claim 1 or 2,
A bonding step of bonding the non-bonded peripheral portion forming the opening and the mounting member;
The manufacturing method of the packaging bag with an attachment member, wherein the state of the mark portion is confirmed after at least one of the insertion step and the bonding step.

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