JP2006051968A - Bag body or box body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag body or a box body capable of blockading an opening part of the bag body or the box body without distortion when a thick content is placed in the bag body or the box body, and furthermore, capable of blockading the neighborhood of the opening part of the side part of the bag body or the box body, and to provide envelopes capable of easily raising a gore part when the content is placed in the bag body when the gore part is composed, and especially, capable of easily storing the thick content and surely blockading it. <P>SOLUTION: The bag body storing the thick content, can be achieved by the bag body which has a flap on one face of the bag body, and at least one notch part toward the bottom part direction from an opening part end edge part of the other face of the bag body in which the opening part is blockaded under a condition that the flap is folded back to bring it into contact with the other face. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a structure of a bag or a box having a gusset on both sides of a bag or a box and storing a thick content, and more specifically, three sides of a main body on both sides and a bottom. Is closed, one direction is an opening for storing contents, a flap for sealing the opening is provided on one side of the opening, and a notch is made on the other side from the end of the opening. It relates to a bag or a box.

Conventionally, various types of bags or boxes have been used to enclose thick contents. Especially for paper bags or boxes, the gusset portion is selected according to the thickness of the contents to be inserted. It is formed in advance with an appropriate width.
For example, there is a pleated paper bag disclosed in Japanese Patent Laid-Open No. 2001-278290 (Patent Document 1).
The structure shown in Patent Document 1 has a gusset for storing a thick content, and is configured to fold the flap and seal the opening.
In this case, the side end portions of the bag body opening portion are configured to protrude in the flap direction, and when the opening portion is sealed by the flap, the bag body opening portion is folded and sealed along the bag body side portion.
Furthermore, there are also a bag, a case, a delivery box, and a method for producing them as disclosed in JP-A-6-24435 (Patent Document 2).
The structure shown in Patent Document 2 also has a gusset for storing a thick content, and is configured to fold the flap and seal the opening.
In this case, in particular, as shown in FIGS. 10, 14 and 15 of the document, the side end portion of the bag body has a side lid and a corner, and when the opening is sealed with a flap. The side lid / corner side is folded and sealed in a direction perpendicular to the side of the bag body.
JP 2001-278290 A JP-A-6-24435

In this case, in the configuration shown in Japanese Patent Application Laid-Open No. 2001-278290 (Patent Document 1), the side end provided on the extension of the side gusset is folded along the side of the bag body, and then the front surface of the bag body. Since the back side is sealed with a flap, this opening part is closed as a thin form that is folded and the front and back sides are overlapped. There will be a gap between the end portion and the flap.
By forming this gap portion, not only the contents may spill outside, but also the sealing portion of the bag body does not fit well.
On the other hand, as a method of not forming the gap portion, when closing the opening portion with the flap as in the configuration shown in Japanese Patent Laid-Open No. 6-24435 (Patent Document 2), the side lid and the corner side are the side portions of the bag body. There is a configuration in which it is folded and sealed in a right angle direction.
In this case, the gap between the flap and the side wall of the gusseted portion is located at the side lid / corner side in the direction of sealing the internal opening, so that the contents can be prevented from coming out and the appearance can be well sealed. It is.

Therefore, the stored items having a width and size that match a preset gusset can be stored in a good manner as described above.
On the other hand, even if the stored item has a predetermined width only, if a small item, that is, a item with a short length in the longitudinal direction is stored, an unnecessary margin is left in the sealed portion of the bag. In addition, the vicinity of the opening of the bag body is loosened, and distortion or the like is caused, and not only can be sealed well, but also a decrease in sealing strength or looseness of the contents due to generation of gaps or loosening of the sealed portion may occur. Had the disadvantages.
Furthermore, with such a configuration, it is sufficient if the thickness is set within a predetermined or planned thickness, that is, within the width of the side lid / corner side corresponding to the thickness, but when storing contents exceeding this width, Has a gap between the side lid / corner side of the part and the front and back surfaces, which not only makes the appearance worse, but also when the flap is sealed, the central part of the bag swells and the overlapped and sealed part of the flap And the distortion also affects the ends of both parts, the appearance of the sealed part of the bag body becomes worse, gaps are formed at both ends, and the sealing strength of the flap itself It will be reduced.

Therefore, if the contents other than the contents that match the size and thickness of the bag body that are planned in advance are stored, the sealing portion of the flap that is the sealing portion of the bag body will inevitably be distorted, which will prevent proper sealing. It has become.
Especially for bags and boxes, it is good if the contents to be stored are specified, but in the case of versatile bags and boxes, any thick contents or the vertical direction of the contents There are various sizes of contents, such as contents with a short length in the horizontal direction, and the shape and size of the contents to be encapsulated is not decided in advance, and forms corresponding to various thicknesses are required Therefore, some solution is required. At present, for example, with respect to envelopes and the like, there are very few types of envelopes that are convenient for storing thick contents, and it is generally difficult to store thick contents as well as envelopes that should store thin contents. It cannot be sealed with overlapping flaps. Even if the envelope has a gusset, if the contents have a width other than the gusset width or the contents of different sizes, distortion will inevitably occur in the vicinity of the sealed portion, resulting in gaps and appearance. It may cause poorness or a decrease in the sealing strength. From the above, the size of the contents to be stored is not determined in advance, and is an envelope that is highly versatile and has a good appearance, and can tightly seal the contents. The body is desired.

SUMMARY OF THE INVENTION The present invention solves such problems, and further aims to provide a bag or a box that can be very easily configured and can be manufactured at low cost. It is an invention that allows the contents of various thicknesses and sizes to be sealed in a formally and reliably without being bound by size and size, etc., and prevents the contents from being zeroed out by minimizing unnecessary gaps at the time of sealing. is there.
Therefore, the invention according to claim 1 is a bag body for storing contents having a thickness, and has a flap on one surface of the bag body, and the flap is folded and brought into contact with the other surface. A bag body that seals an opening, and has at least one or more cuts from the edge of the opening on the other surface of the bag body toward the bottom, and can be achieved by the invention.
Further, as in the second aspect of the present invention, the gusset portion of the opening formed by the mountain fold portion provided in parallel to the opening side through a certain interval from the opening, and each of the bag body from the both sides of the bag body at a certain interval. A side gusset formed by a mountain fold provided in parallel to the side and a bottom gusset formed by a mountain fold provided in parallel to the bottom at a predetermined interval from the bottom of the bag bottom. , Having a gusset portion formed by a mountain fold in each corner direction of the bag bottom from both intersections of the mountain fold on the side and the mountain fold on the bottom, and between the mountain fold and the side of the opening There is a gusset portion formed by a mountain fold in each corner direction of the bag body opening from both intersections with the mountain fold, and an opening is formed at the connecting portion between the flap on the entire surface of the bag and the base portion of the bag And is formed by a mountain fold in parallel with the opening at the substantially central portion of the flap. May be on both sides of the flap gore be those using a bag body having a flap shoulder gusset portions formed by mountain-folding unit and has a flap gusset portion.

In this case, as in the invention described in claim 3, a bag body in which the cut portion is formed in a mountain fold portion provided in parallel to each side of the bag body opening portion may be used.
Further, as in the invention described in claim 4, a bag body in which the cut portion is formed at two or more places, and a tongue portion is constituted by one cut portion and another cut portion may be used. .
Alternatively, as in the invention described in claim 5, the bag body in which the cut portion is formed wide may be used, or in the invention described in claim 6, the bag body may be a paper bag body. Since the bag body is an envelope as in the invention described in claim 7, it is possible to provide a more convenient envelope.
Alternatively, as in the invention described in claim 8, it may be used for a box instead of a bag.

From the edge of the opening of the other surface which is sealed by folding the flap for opening sealing continuously connected to one surface of the front surface or the back surface of the bag or the box and contacting the other surface By having a notch in the bottom direction, when a thick content is put in the bag or box, it can be sealed without distorting the bag or the opening of the box, and further, the bag or box It has the very effective 1st effect that the vicinity of the opening part of this side part can be sealed without distortion.
Especially for envelopes, thin contents are planned from the beginning, but when it is necessary to enclose thick contents at the time of mailing, even thick contents should be stored nicely. At the same time, distortion during flap sealing can be eliminated and the sealed state can be kept strong.
Therefore, the bag body or the box body can be reliably sealed, and a well-sealed sealed state can be maintained.

In addition, since the gusset portion is configured to have a mountain fold configuration, the gusset portion of the bag body can be easily raised when the contents are put into the bag body.
Moreover, even if the content is within the gusset width, when the thickness of the content is adjusted by folding the gusset, there is a third effect that the flap can be sealed without distortion in a state corresponding to each thickness.
Therefore, any width can be sealed without distortion according to the width, and not only can the appearance be improved, but also the sealed state can be kept strong, and the contents can be prevented from coming off.
Furthermore, since it is simple and can be manufactured very easily and at a low cost, it has a fourth effect that it is possible to provide a bag or box that is extremely easy to use.

FIG. 1 is a perspective view showing a basic embodiment of the present invention.
First, FIG. 1 is a diagram showing an example of a bag body, which has front and back surfaces 1a and 1b constituting the bag body 1, a flap 3 on the back surface 1b, and two openings on the front surface 1a. And a tongue piece A formed between the cuts.
In particular, the two cut portions 2 are gusset portions 11 provided at a predetermined distance from both side portions of the bag body 1 along the gusset portions 11 from the opening toward the bag body main body. It is the cut | notch part 2 provided.
In addition, it has the gusset parts 11 and 12 which have the fold lines 11a and 12a in the both sides and bottom part direction of the bag body 1, and when the thing which has thickness as a content is accommodated, this fold line 11a, It can be folded back at the portion 12a, and the storage portion can be made thick.
As described above, the opening portion of the surface 1a of the bag body 1 has two cut portions 2 having a certain length, and the cut portion 2 extends from the opening portion direction of the surface 1a to the bottom portion of the bag body. Since it is formed along the gusset portion 11 with the notch 2 provided toward the front, when a material having a thickness is accommodated, distortion or the like can be corrected in this portion. Become.

Further, when the contents are stored in the bag body as necessary, the tongue portion A formed by the two cut portions 2 is folded back in the direction of the bag body opening portion to open the opening portion. Can be blocked.
Accordingly, the notch 2 can correct distortion in the vicinity of the opening of the surface 1a of the bag body 1, the surface of the tongue piece can be formed as a horizontal plane, and the central portion where the flap 3 is bonded to the surface 1a with an adhesive member or the like is distorted. The tongue piece A can also be positioned as a presser on the surface of the thick portion of the thick portion of the thick portion in the direction of the opening.
Furthermore, since it has the cut portion 2, the distortion due to the thickness of the contents of the central portion of the bag body 1 does not affect the opening blockage portions on both side portions, and the side portions can be fit well and the flaps can be formed. 3 can be tightly bonded and sealed.
FIG. 2 is a diagram showing a state in which a thick content is stored in the bag according to the present invention shown in FIG. 1, and the content is substantially the same thickness as the gusset portion, and the vertical and horizontal directions are respectively It is a figure which shows the state which accommodated the content smaller than the magnitude | size of an envelope.
Thus, even when contents having a size different from the intended size are stored, the opening can be sealed with the flap 3, and the opening portion of the bag body can be formed by the cut portion 2 of the surface 1a of this portion. It can absorb peripheral distortion and can be formed in a flat shape, and the flap 3 can be bonded to the surface 1a of the bag body without distortion, enabling reliable bonding.

Further, the opening end folding portion 13a connected to the gusset portion 11 at both ends can eliminate the influence of the distortion of the central portion of the bag body 1 by the cut portion, and can be used as a margin portion of the gusset portion 13. To do.
Further, the gussets 11, 12, and 13 can be folded at an arbitrary angle depending on the thickness of the contents.
The gusset portion shown in the figure is first provided on the surface with a gusset portion 14 of the opening portion provided in parallel to the opening side with a certain distance from the opening portion, and in parallel with each side edge with a certain distance from both sides of the bag body. A gusset portion 11 on the side of the bag body, and a gusset portion 12 on the bottom side provided in parallel to the bottom side at a predetermined interval from the bottom of the bag body. And a gusset portion 12 on the bottom side of the bag, and a gusset portion 15 having a substantially triangular shape in each corner direction of the bottom of the bag body.
Furthermore, it has the substantially triangular-shaped gusset part 13 from each intersection part of the gusset part 14 of an opening part, and the gusset part 11 of a side to each corner | angular part direction of a bag body opening part, respectively.
Each of these gusset portions is formed by bending a fold line of a mountain fold.

Next, on the back surface 1b of the bag body, that is, the surface having the flap 3, similarly, a gusset portion 14 of the opening portion provided in parallel with the opening side through a predetermined interval from the opening portion, and each side from the both sides of the bag body at a predetermined interval. A gusset 11 on the side provided parallel to the side, and a gusset 12 on the bottom provided parallel to the bottom at a predetermined interval from the bottom of the bag bottom, and at both corners of the bag bottom There are substantially triangular gussets 15 in the direction of the corners of the bag body from the intersections of the gussets 11 of the sides and the gussets 12 of the bottom, and the gussets 14 of the openings and the sides A substantially triangular gusset portion 13 is provided in each corner portion direction of the bag body opening from both intersections with the gusset portion 11.
Further, the connection portion between the flap 3 and the base portion of the back surface 1b of the bag body has a folded portion 30a along the opening, and further, the flap 3 has a flap gusset portion 30 in parallel with the opening. Furthermore, it is connected to the flap protrusion 31.
When the flap 3 is sealed by being configured in this way, that is, the opening is closed by the folded portion 30a along the opening, and the flap protrusion 31 is further adhered to the bag body surface 1a. When sealing, the flap gusset portion 30 overlaps with the gusset portion 14 of the opening surface 1a, so that the thickness of the bag body can be applied according to the thickness of the contents of the bag body. It is possible to block the portion, and to prevent the contents from leaking not only from the central portion of the opening but also from this portion to the outside.

In addition, it has the substantially triangular-shaped flap shoulder gusset part 32 from the both-sides edge part of a bag body opening part in the both-sides side part of the flap gusset part 30 of a bag body back surface.
The flap shoulder gusset portion 32 is formed of the gusset portion 13 provided in each corner portion direction of the bag body opening portion from the intersection portion of the gusset portion 14 of the opening portion of the bag body surface 1a and the gusset portion 11 of the side. This is consistent with the shape of the substantially triangular gusset 13 formed in the opening direction.
By configuring in this manner, when the flap 3 is closed, the flap shoulder gusset portion 32 and the substantially triangular gusset portion 13 of the bag surface 1a are overlapped with each other, and both of them function as gussets. Can do.
In addition, the folding structure for constituting these gusset parts is a mountain fold structure, and this makes it possible to raise the gusset parts very easily.
Next, when the flaps 3 are sealed as shown in FIG. 3, the opening sealed portions on both side portions can be folded into the folded portions of the open ends at both ends by the cut portions 2 without distortion. It is possible to tightly seal both sides of the opening blocking portion of the bag.

Furthermore, as shown in this figure, the gusset portion is folded in a mountain and has a flap gusset portion 30 and a flap protrusion 31. Therefore, this flap gusset portion 30 overlaps with the gusset portion 14 on the surface of the opening, and in this state Even when the width of the gusset is changed, the overlap between the two is not shifted, and a tight blockage is possible and distortion of the bag body does not occur.
FIG. 4 is a diagram illustrating an example of a developed state of the bag body illustrated in FIGS. 1 to 3.
A flap 3 is connected to the back surface 1a of the bag body and has a flap gusset 30.
Both the front and back surfaces of the bag body have a mountain fold portion for forming a gusset in parallel with each side portion at a predetermined interval from each portion of the opening, side, and bottom side in a facing state, and further the bottom portion of the bag body In both corners of the side, the folds are formed in the direction of the corners of the bag body from the intersections of the side and bottom folds to form the gusset, and the opening and side folds A fold portion is provided in each corner portion direction of the bag body opening from both intersecting portions, and a gusset portion is provided.
Further, the flap 3 and the base portion have a folded portion 30a along the opening at the connecting portion, and a mountain fold 31a parallel to the opening at the substantially central portion to form the flap gusset 30. The flap gusset 30 is connected to the flap protrusion 31.

Further, flap shoulder gusset portions 32 are provided on both sides of the flap gusset portion 30.
In the opening side portion of the surface 1a of the bag body configured as described above, the mountain fold portion 11a formed along both sides has the cut portions 2 respectively.
In addition, 5 shows the side part of a bag body, 4 shows the bottom side part of a bag body, The gusset part 11 of the side provided in the outward direction from the side part 5 of the bag back surface 1b is a bag body. It is a glue margin part at the time of a bag structure with the gusset part 11 of the side of the surface 1a.
Thus, it is the structure which put the notch 2 in the surface 1a of a bag body, and this solves the disadvantage which had arisen conventionally, and not only can manufacture very easily but can also hold down manufacturing cost at low cost. it can.
The configuration shown in FIGS. 1 to 4 is merely an example, and the folding shape is not limited to this configuration, and the gusset configuration formed by the folding configuration is not limited to this drawing.
For example, it is not limited to the one configured by mountain folds, and may be used for one configured by valley folds.
Furthermore, the structure of the notch part 2 is not limited to that shown in this figure, and any structure may be used as long as it is provided on one surface of the opening of the bag body. It can be arbitrarily determined.

Further, in this figure, two notches 2 are provided, and this configuration is the most optimal configuration. However, the configuration is not limited to two but may be one or three or More than that may be provided.
Furthermore, the cut portion 2 shown in these drawings is configured to be provided in parallel to the side portion from the end of the opening portion toward the bottom portion, but is not limited to the configuration parallel to the side portion, and is an oblique cut portion. It may be.
That is, a notch provided obliquely from the end of the opening toward the side toward the bottom may be used.
In FIG. 5, the notch 2 is not provided in the mountain fold portion 11a formed along the both sides 5 of the bag body 1, but is the gusset portion 14 of the opening portion from the end portion of any opening portion toward the bottom portion. It is a figure which shows an example provided in parallel with the side part 5.
FIG. 6 is a diagram showing an example of a bag according to the present invention configured with the cut portion 2 of the bag 1 as one place, and is a diagram clearly shown as a plan view.
As shown in this figure, with respect to the notch 2, the distortion of the bag surface when the contents are stored and sealed can be adjusted at the notch portion even at one place, and the flap 3 The contact surface with can be kept flat.

In addition, the notch part 2 shown to this figure is a linear notch, and such a structure is also included in the notch part 2 naturally.
FIG. 7 is a plan view showing an embodiment in which the cut portion 2 of the bag 1 is configured to be wide.
As shown in the figure, the notch 2 may have a certain width.
By constructing in this way, the bag body surface side edge portions located at both side edge portions of the notch 2 can be shifted, distortion of the bag body at the time of sealing can be corrected by this shifting, and the planar shape can be maintained. To do.
FIG. 8 is a plan view showing an embodiment in which a wide notch in which the notch 2 is configured wider is provided at the center of the bag opening.
Even if it comprises in this way, distortion of the bag body at the time of sealing can be prevented similarly.
FIG. 9 is a plan view showing an example of a state in which contents are stored in the bag body 1 according to the present configuration, and FIG. 9 is a diagram showing a state in which thick contents that match the gusset width are stored.
As shown in the figure, the flap gusset portion 30 can be stored without distortion, and the flap gusset portion 30 overlaps with the gusset portion 14 on the surface of the opening, and can be stored without generating a gap.
FIG. 10 is a view showing a state in which contents having a thickness that does not reach the gusset width of the bag body 1 are stored.

Even in this case, the bag body 1 can be prevented from being distorted and sealed with good appearance, and the adhesive strength when the flap 3 is sealed can be maintained high.
The fixed shape can be maintained by folding the gusset portion, and the flap gusset portion 30 overlaps with the gusset portion 14 on the surface of the opening as described above, and can be sealed without generating a gap or the like.
In particular, by using a thick paper bag, it is possible to provide a more convenient bag.
FIG. 11 is a plan view showing a state in which thin contents are stored.
Also in this case, distortion of the bag body 1 can be prevented in the same manner as described above, and the flap gusset portion 30 overlaps with the gusset portion 14 on the surface of the opening and can be tightly sealed.
Next, FIG. 12 is a figure which shows the state of one implementation which used this invention for the box instead of the bag.
As shown in this figure, it has a side wall portion 11 and a bottom wall portion 12 which become a gusset portion, a cutout portion 2 is provided in the front surface portion of the box body opening portion, and further, the rear surface portion projects from the opening portion. It has the flap 3 provided in the shape.

Furthermore, it has the notch part 2 toward the bottom wall part from the edge part of the opening part of this surface part 1a.
When the thick contents of the box are stored in such a box, the central part in contact with the contents swells, but the notch 2 is formed on the surface of the opening corresponding to the swelled part. Are provided at two positions, and the edge portion of the opening can be positioned at the original thickness of the box by the tongue piece portion formed by the cut portion, and contact with the flap 3, that is, adhesion, etc. It can be done reliably.
Further, in the vicinity of the opening of both side walls 11, for example, both side portions of the surface portion connected in the vicinity of the opening of both side walls are affected by distortion or the like received from the surface of the thick contents. In addition, not only the flap 3 but also the flap shoulder gusset portion 32 can be adhered to the both side portions of the surface portion to perform reliable sealing.
The structure of the cut portion in the present box is the same as that of the above-described bag body, and at least the cut portion is provided on one surface of the opening of the box body, and the length position and the like depend on the design of the bag body. It can be determined arbitrarily.
In addition, two notches are provided, and this configuration is the most optimal configuration, but it is not limited to two locations, and one, three, or more may be provided. Good.

Furthermore, the cut portion shown in these drawings is a structure provided in parallel to the side wall portion from the opening end to the bottom wall portion, but is not limited to the structure parallel to the side wall portion, and is a slant cut portion. Also good.
As described above, it can be used not only for a bag but also for a box. For example, it is most suitable to use this configuration in a bag or a box made of cardboard or the like.
In other words, regarding the thick paper bags and boxes that are frequently used at present, there is a disadvantage that the bag or box will inevitably be distorted when a thick item is inserted as the contents. By using this, contents with a thickness exceeding the width of the gusset can be stored, the flaps can be securely sealed, and the appearance can be stored well.
It may be used for bags or boxes of other members that may be distorted from the original, or a paper bag or box other than a cardboard bag or box, or a thin paper bag or box It may be used for the body.

The perspective view which shows the state of one implementation of the bag which concerns on this invention The figure which shows the state which accommodated the thick content in the bag body which concerns on FIG. The figure which shows the state which closed the flap of the bag body shown in FIG. The figure which shows an example of the expansion | deployment state of the bag body shown to FIG. 1 thru | or FIG. The figure which shows another one state of implementation of the bag body which concerns on this invention The figure which shows an example of the bag which concerns on this invention which comprised the notch part of the bag as one place The top view which shows the state of one implementation which constituted the notch part of a bag body widely The top view which shows one implementation state which has the wide notch which comprised the notch part more widely The top view which shows an example of the state which stored the contents in the bag body The top view which shows an example of the state which stored the contents in the bag body The top view which shows an example of the state which stored the contents in the bag body The figure which shows the state of 1 implementation which used this invention for the box instead of the bag

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bag body 1a Front surface 1b Back surface 11 Side gusset part 11a Mountain fold part formed along the side part 12 Bottom gusset part 12a Mountain fold part formed along the bottom part 13 The substantially triangular gusset of the bag body opening part Part 13a Mountain fold part 14 Open part gusset part 14a Mountain fold part formed along the opening part 15 Triangular gusset part at the bottom of the bag body 15a Mountain fold part 2 Cut part 3 Flap 30 Flap gusset part 30a Along the opening part Folded portion 31 Flap protruding portion 31a Mountain folded portion 32 Flap shoulder gusset portion 4 Bottom portion 5 Side portion

Claims (8)

In a bag body 1 for storing contents having a thickness, the bag body 1 has a flap 3 on one surface, and the flap 3 is folded and brought into contact with the other surface to seal the opening. ,
The bag body having at least one or more cut portions 2 from the edge of the opening on the other surface of the bag body 1 toward the bottom. A gusset portion 14 of the opening formed by a mountain fold portion 14a provided in parallel to the opening side through a certain distance from the opening;
A side gusset portion 11 formed by a mountain fold portion 11a provided in parallel to each side through a certain distance from both sides of the bag body;
A bottom gusset portion 12 formed by a mountain fold portion 12a provided in parallel to the bottom side at a constant interval from the bottom side of the bag body,
It has a gusset portion 15 formed by mountain folds 15a in the direction of each corner of the bag body from both intersections of the side folds 11a and the bottom folds 12a,
It has a gusset portion 13 formed by mountain folds 13a in the direction of each corner of the bag opening from the intersection of the mountain fold 14a of the opening and the mountain fold 11a on the side,
The connecting portion between the flap 3 on one side of the bag body 1 and the base portion of the bag body 1 has a folded portion 30a along the opening,
The flap 3 has a flap gusset 30 formed by a mountain fold 31a parallel to the opening, and a flap shoulder gusset 32 formed by a mountain fold on both sides of the flap gusset 30. The bag according to claim 1, wherein the bag is a bag.   The bag according to claim 2, wherein the cut portion (2) is formed in a mountain fold portion (11a) provided in parallel with each side of the bag body opening.   4. The notch portion 2 is formed at two or more places, and the tongue portion A is constituted by one notch portion 2 and another notch portion 2. Bag body.   The bag according to any one of claims 1 to 4, wherein the cut portion 2 is formed wide.   The bag according to any one of claims 1 to 5, wherein the bag is a paper bag.   The bag according to any one of claims 1 to 6, wherein the bag is an envelope.   The box according to claim 1, comprising a box instead of the bag.

Images