JP2019199304A - Gusset bag and content storage body - Google Patents

Abstract

To provide a gusset bag in which a V-shaped top portion of a side portion opposite to a tearing start portion can be cut, which makes it possible to provide a reliable opening feature without reducing an internal volume.SOLUTION: A gusset bag, which is made of a soft packaging material, has a pair of flat surfaces, a pair of side surfaces, and side seal portions joining the pair of flat surfaces and the pair of side surfaces in an end-to-end manner. An easily opened portion is provided in a region of a part of the side seal portion, and the easily opened portion has a scar group formed on the side seal portion and the content containing portion so as to straddle an inner edge of the side seal portion which is a boundary line between the side seal portion and the content containing portion.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gusset bag and a content container.

  In a packaging bag made of soft packaging material, a cut or scar is provided in one place of the seal part at the end of the packaging bag so that it can be easily opened by hand without using a tool such as scissors. As a trigger, it is known to tear and open a packaging bag.

  Further, there is a gusset bag having a pair of flat surface portions and a pair of side surface portions (folded gussets) folded in a V shape. Since the gusset bag has a gusset, the gusset bag spreads three-dimensionally when filled with contents, and can be displayed in a self-supporting state. Further, since the internal volume of the gusset bag is larger than that of a bag without gusset, it is possible to wrap a large volume of contents.

  In the case of a general gusset bag, even if there is a cut or scar in one place of the seal part at the end, when the packaging bag (gusset bag) is torn laterally using that place as a trigger, tearing started In some cases, the V-shaped top portion of the side portion opposite to the side portion adjacent to the seal portion cannot be cut, and the packaging bag cannot be opened. Several packaging bags have been proposed to solve this problem.

  The gazette-type packaging bag described in Patent Document 1 forms a side end thermal bonding portion at the side end of one folding portion, forms an opening start means (notch) on the side end thermal bonding portion, and has a notch On the tearing imaginary line of the folding part located on the opposite side of the part, there is an opening assisting thermal bonding part in which the inner layers are thermally bonded so as to include the folding tip part. In addition, a single linear cut as an opening assisting means for cutting at least the leading end of the folding is provided in the opening assisting thermal bonding portion so as to penetrate the packaging bag so as to substantially coincide with the tearing imaginary line. As a result, the V-shaped top of the side surface opposite to the side portion adjacent to the seal portion where opening has been started can be torn and easily opened in the direction perpendicular to the folding portion, and has a substantially constant shape. An opening can be obtained.

  In addition, the easy-open gazette bag-like container described in Patent Document 2 is formed by forming a single film into a cylindrical shape, and providing one vertical seal part bonded to the palm, and part of the vertical seal part is an easily peelable seal. An area is provided, and an opening for cutting (two notches) is provided in the area. And the tab film part between the cutting parts for opening cutting is cut | disconnected and opened in the strip | belt shape in the circumferential direction of a bag-shaped container.

Japanese Patent Application Laid-Open No. 2004-237995 JP 2002-104438 A

  Since the gazette-type packaging bag described in Patent Document 1 has an opening assisting heat-bonding portion, the internal volume is reduced accordingly. Further, in a state where both notches of the folded portion on the side with the notch are aligned, the pair of flat portions are simultaneously torn in the lateral direction using both notches as a tearing start portion, and the packaging bag is opened. Therefore, when the contents are solid and the height is higher than the position of the planned tear line, the contents become an obstacle, and it is difficult to tear the pair of plane portions simultaneously in the lateral direction.

  The easy-open gazette bag-like container described in Patent Document 2 has a problem that the top of the V-shape cannot be torn off because the tab film portion is cut in a band shape in the circumferential direction of the bag container and opened, and the contents are fixed. Even if it is a shape and its height is higher than the position of the planned tear line, the contents can be opened without obstruction. However, this easy-open gusset bag-like container has only one vertical seal part bonded to the palm, and the boundary between each side plate (plane part and side part) is folded. Such a gusset bag formed by folding the boundary between the side plates (the plane portion and the side surface portion) is compared with a bag having a side seal portion serving as a pillar at the boundary between the plane portion and the side surface portion. Inferior independence.

  However, when the boundary is the side seal part, the tearing cannot be overcome through the side seal part by the opening method in Patent Document 2, and it is difficult to open the tear. Moreover, in the opening method in patent document 2, the tab film part cut | disconnected in strip | belt shape becomes garbage.

  The present invention has been made in view of the above-described circumstances, and without reducing the internal volume, the top of the V-shaped side portion on the side opposite to the side portion adjacent to the seal portion where tearing has started can be torn. Gazette that can be opened reliably even if the boundary between the flat part and the side part is a side seal part in order to ensure self-sustainability without generating dust like a tab film part The purpose is to provide a bag.

  In order to solve the above-mentioned problem, a gusset bag according to one aspect of the present invention is made of a soft packaging material, and includes a content storage portion forming surface portion including at least a pair of flat portions and a pair of side portions, and the pair of flat surfaces A side seal part that joins the side parts of the flexible packaging material forming the part and the pair of side face parts, and a content storage part surrounded by the content storage part formation surface part, An easy opening portion is provided in a region including a part of the side seal portion, and the easy opening portion is a boundary line between the side seal portion and the content storage portion forming surface portion. It has a scar group formed so as to straddle the inner edge.

  There are four side seal portions, and the easy-open portions may be provided at substantially the same height in each of all the side seal portions.

  In the easy-opening portion, the scar group may extend to an outer edge of the side seal portion.

  The easy-opening portion may be a combination of the scar group and an incision provided in an outer edge of the side seal portion.

  The flexible packaging material may be a laminate including a uniaxially stretched film stretched in a tearing direction for opening the gusset bag.

  The gusset bag may further have a bottom surface.

  The easy-opening portion may be provided at a plurality of height positions of the side seal portion.

  A content container according to an aspect of the present invention is characterized in that a plurality of individual packaging bags are stored as solid contents in the above-described gusset bag.

  The height of the individual package may be higher than the height up to the easy opening portion of the gusset bag.

  According to the present invention, the V-shaped top of the side part opposite to the side part adjacent to the seal part that has started tearing can be cut without reducing the internal volume, and dust such as a tab film part is generated. Moreover, even if the boundary between the flat surface portion and the side surface portion is a side seal portion in order to ensure self-supporting property, a gusset bag that can be reliably opened can be provided.

(A) is an external view of the gusset bag which concerns on one Embodiment of this invention, (b) is the elements on larger scale of the periphery of the easy-opening part 41a of the gusset bag of (a). It is the figure which looked at the gusset bag which concerns on one Embodiment of this invention from the bottom face side. It is the typical sectional view which looked at the gusset bag concerning one embodiment of the present invention from the upper part. It is an external view which shows the state which opened the content storage body which concerns on one Embodiment of this invention.

  Hereinafter, a gusset bag according to an embodiment of the present invention will be described in detail with reference to the drawings. First, the shape of the gusset bag according to the present embodiment will be described. Fig.1 (a) is an external view of the gusset bag which concerns on one Embodiment of this invention. As shown in FIG. 1A, the gusset bag according to the present embodiment includes a pair of flat portions 21 and 22 made of a rectangular soft packaging material (sheet material) and a rectangular soft packaging material inside the bag. It has a pair of side surface parts 31 and 32 folded in V shape so that the direction may become a top part. The pair of flat surface portions 21 and 22 and the pair of side surface portions 31 and 32 are also referred to as content storage portion forming surface portions 21, 22, 31, and 32. A pair of side surface portions 31 and 32 are arranged on both sides of the pair of flat surface portions 21 and 22 so that the V-shaped top portions 310 and 320 folded in a V shape are inwardly butted. And the side parts of the soft packaging material which forms a pair of plane parts 21 and 22 and a pair of side parts 31 and 32 are joined by heat seal, and the side part seal parts 4a, 4b, 4c, 4d. Is forming. The side seal portion 4 a joins the side portions of the flat portion 21 and the soft packaging material forming the side portion 31. The side seal portion 4b joins the side portions of the flexible packaging material forming the flat portion 21 and the side portion 32. The side seal portion 4 c joins the side portions of the flexible packaging material forming the flat portion 22 and the side portion 31. The side seal portion 4d joins the side portions of the flexible packaging material forming the flat portion 22 and the side portion 32. Moreover, it has the content storage part 6 enclosed by each content storage part formation surface part 21,22,31,32 (plane part 21,22, side part 31,32).

  The gusset bag 1 according to the present embodiment further has a bottom surface portion 5. FIG. 2 is a view of the gusset bag according to the present embodiment as viewed from the bottom side. The bottom surface portion 5 is composed of one rectangular flexible packaging material. The peripheral portion of the soft packaging material forming the bottom surface portion 5 has a lower end seal portion 54 joined by heat sealing to the lower portions of the soft packaging material forming the flat surface portions 21 and 22 and the side surface portions 31 and 32, respectively. Is formed. A center fold line 51 is formed on the center line of the bottom surface portion 5 in the longitudinal direction. Further, a diagonal fold line formed by bending a section connecting two corners at both ends of the bottom surface portion 5 with the two points on the central fold line 51 as the base point is folded in the same direction as the folding direction of the central fold line 51. 52 is formed, and the outer side of the two base points of the center fold line 51 is bent in the opposite direction. Before the gusset bag 1 is filled with the contents, the bottom surface portion 5 is folded by the center fold line 51 and the oblique fold line 52, but the bottom surface portion 5 of the gusset bag 1 filled with the contents is shown in FIG. The gusset bag 1 becomes a packaging bag having a flat bottom. In addition, how to fold a bottom part is not limited to the form of an upper part.

  By having the bottom portion, the bottom becomes flat, and the self-supporting property of the gusset bag is improved. In addition, this invention is not limited to the gusset bag which has such a bottom face part.

  Easy-opening portions 41a, 41b, 41c, and 41d are provided in regions including a part of each of the side seal portions 4a, 4b, 4c, and 4d. FIG.1 (b) is the elements on larger scale of the periphery of the easy-opening part 41a of the gusset bag 1 of Fig.1 (a). The easy-opening portions 41a, 41b, 41c, and 41d are provided at a height position where the gusset bag 1 is desired to be opened. The height dimension from the lower end of the gusset bag to each of the easy-opening portions 41a, 41b, 41c, 41d is substantially equal.

  Each of the easy-open portions 41a, 41b, 41c, and 41d straddles the inner end edges 42a, 42b, 42c, and 42d of the side seal portions 4a, 4b, 4c, and 4d, and the side seal portions 4a, 4b, 4c, and 4d. In addition, there are scar groups 43a, 43b, 43c, and 43d on the respective content storage portion forming surface portions 21, 22, 31, and 32. Here, the inner end edges 42a, 42b, 42c, and 42d are boundaries between the side seal portions 4a, 4b, 4c, and 4d and the content storage portion forming surface portions 21, 22, 31, and 32. Moreover, the content storage part 6 is the space enclosed by the plane parts 21 and 22, the side parts 31 and 32, and the bottom face part 5, and the bottom face part 5 is also a content storage part formation surface part in this case.

  The width dimension in the height direction of the scar group 43a, 43b, 43c, 43d is preferably 3 mm to 20 mm, and more preferably 10 mm to 20 mm. If the width dimension in the height direction of the scar group is 3 mm or more, it can be easily torn, and if it is 20 mm or less, the bag breakage from the scar group is suppressed when the gusset bag is dropped.

  Moreover, although there is a possibility of breaking the bag from the scar group when dropped, the scar group may be provided in all height directions. Although depending on the location of the cut described later, the gusset bag can be easily opened from any height position by providing the scar group.

  In this embodiment, the easy opening part 41a of the side part seal part 4a is used as a tear start part. As will be described in detail later, as shown in FIG. 3, the gusset bag 1 is torn starting from the side seal portion 4a, as indicated by the arrow (1) in the drawing, respectively in the plane portion 21 and the side portion 31. In the two directions and reach the side seal portions 4b and 4c. Thereafter, the side seal portions 4b and 4c are also torn, and the tearing proceeds over the side seal portions 4b and 4c, and the tear proceeds to the plane portion 22 and the side portion 32 as indicated by the arrow (2) in the figure. . The width dimension in the height direction of the scar groups 43b, 43c, and 43d of the remaining side seal portions 4b, 4c, and 4d is larger than the width dimension in the height direction of the scar group 43a of the easy-opening portion 41a that is the tear start portion. It can be big. For example, the width dimension in the height direction of the scar group 43b, 43c, 43d may be 5 to 20 mm larger than the width dimension in the height direction of the scar group 43a. As a result, even if the tear line is slightly deviated from the planned tear line (the lateral direction), the tear can reach the scar groups 43b, 43c, 43d, and the side seal portions 4b, 4c, 4d can be torn. .

  The lateral width dimension of the scar groups 43a, 43b, 43c, 43d is preferably 2 mm to 10 mm. Among them, the portion located on the side seal portions 4a, 4b, 4c, and 4d is preferably 1 mm to 5 mm. Moreover, the part located on the content storage part formation surface parts 21, 22, 31, and 32 straddling inner edge 42a, 42b, 42c, 42d of a side part seal part, 1 mm-5 mm are preferable.

  Thus, the scar groups 43a, 43b, 43c, 43d straddle the inner end edges 42a, 42b, 42c, 42d, respectively, on the side seal portions 4a, 4b, 4c, 4d, and the content storage portion forming portion. 21, 22, 31, 32. When tearing started from the side seal portion 4a reaches the side seal portions 4b, 4c, 4d, the side seals are reached by reaching the scar groups 43a, 43b, 43c, 43d of the respective easy-open portions. It progresses without stopping at the inner end edges 42b, 42c, 42d of the parts 4b, 4c, 4d, and the side seal parts 4b, 4c, 4d can be torn.

  The scar group is a set of a plurality of scars, and any individual scar may be used. The scar is a part of the soft packaging material that has been damaged by some means, and the soft packaging material is more likely to be destroyed from its surroundings, for example, the outer surface of the laminate that is a soft packaging material, That is, it may be provided only in the outermost layer, or may be provided with a through-hole or a semi-through-hole penetrating the laminate. When the scar group includes a scar consisting of a through-hole penetrating the laminate, tearing can easily overcome all the side seals compared to the scar group only on the outer surface, and easily Since a gusset bag can be opened, it is preferable.

  In the case where the gusset bag is an exterior bag that stores a plurality of individual packages in which articles are individually packaged as contents, a through-hole may be provided in the contents storage portion forming surface portion. When the gusset bag needs to be shielded from moisture, oxygen, and light, the scar group is preferably a semi-through hole provided in a layer outside the barrier layer of the laminate described later.

  The plan view shape of each single scar in the scar group and the arrangement thereof may be any. Examples of the shape of the scar in plan view include a triangular shape, a quadrangular polygonal shape, a linear shape, and a V shape. Further, the planar shape of the scar may be round or indefinite. Examples of the array of scars include a lattice pattern and a staggered pattern. Alternatively, the arrangement may be irregular. The scar is applied by processing with a metal blade or a grindstone, or laser processing. As the scar group, for example, a square pyramid-shaped scar is arranged in a zigzag pattern in the depth direction, a plurality of straight scars are arranged in a staggered pattern, and irregularly-shaped scars are irregularly arranged Things.

  The scar group may be provided from the outer surface of one of the two laminates joined by the side seal portion, or both laminates of the plane portion side and the side portion side. It may be provided from the outer surface. In addition, when the scar group is provided from the outer surface of both laminates, the scar group is surely formed on the contents storage portion forming surface portion of both laminates, so the scar group is provided from the outer surface of one laminate. It is preferable that the scars are provided from the outer surfaces of both laminates because they can be torn more easily than the case where they are formed.

  In the present embodiment, in the easy-opening portion 41a that is a tear start portion, a cut 45a that is a trigger for tearing is provided on the outer end edge 44a of the side seal portion 4a. The scar group 43a does not extend to the outer edge 44a of the side seal portion 4a. By having a cut, the tearing direction can be determined by the direction in which the cut extends. The notch may have any existing shape such as an I notch or a V notch, but the I notch is preferable from the viewpoint of determining the tear direction.

  The incision position is preferably provided at any position included in the width dimension in the height direction from the lower end to the upper end of the scar group, and is preferably approximately the center between the lower end and the upper end of the scar group. The cut and the scar group may be in contact with each other, but may be separated by about 1 to 3 mm. In the gusset bag of the present invention, only the cut 45a is formed in the side seal portion 4a having the easy-open portion 41a serving as a tear start portion, and the scar group 43a may not be formed.

  Moreover, the notch may be provided not only in the side seal portion 4a but also in the side seal portions 4b, 4c, and 4d. In this case, a cut 45b is provided in the outer end edge 44b of the side seal portion 4b. A cut 45c is provided in the outer edge 44c of the side seal portion 4c. A cut 45d is provided in the outer end edge 44d of the side seal portion 4d.

  In the above-described embodiment, a set of four easy-opening portions (a scar group and a cut) is provided at substantially the same height position, but a plurality of sets of easy-opening portions are provided at a plurality of different height positions. It may be provided.

  Next, the material of the gusset bag of this embodiment will be described. In the gusset bag of the present embodiment, the flat surface portions 21 and 22, the side surface portions 31 and 32, and the bottom surface portion 5 are laminates made of a soft packaging material (sheet material) in which, for example, resin films are laminated. This laminate is preferably a multilayer film comprising a laminate having at least the outermost layer that is the outer side of the gusset bag and the innermost layer that is the inner side of the gusset bag. In addition, the laminated body may have an intermediate | middle layer between the outermost layer and the innermost layer as needed.

  As the outermost layer, a film having excellent printability and further having piercing strength, tensile strength, impact resistance and the like is preferable. Examples of the material of the outermost layer include polyethylene terephthalate, polypropylene, polyamide, ethylene vinyl alcohol copolymer, and the like, and these biaxially stretched films are preferable. In addition, in order to provide these films with a barrier property against oxygen and water vapor, a vapor deposited film in which a metal such as aluminum or magnesium or an oxide such as silicon oxide is deposited, a barrier coating agent such as polyvinylidene chloride, etc. A coated film coated with may be used. The outermost layer may be a single film or a laminate.

  The innermost layer is a layer that can be heat-melted and heat-sealed within a temperature range in which the shape of the outermost layer can be maintained. Examples of the material of the innermost layer include high-density polyethylene, low-density polyethylene, polyethylene such as linear low-density polyethylene, polypropylene, and the like. These unstretched films and the resin are extruded into layers to form a film. Those are preferred.

  Examples of the intermediate layer include films having functions such as oxygen barrier properties, water vapor barrier properties, tearing properties, puncture strengths, tensile strengths, and impact resistances, and the same as those listed in the outermost layer. Can be mentioned. Moreover, as an intermediate | middle layer, metal foil, such as aluminum, is also mentioned, for example. One of these layers may be used, or two or more layers may be provided.

  As one of the intermediate layers, it is preferable to use a uniaxially stretched film stretched only in the tear direction. That is, it is preferable to use a uniaxially stretched film stretched in a direction perpendicular to the direction in which the side seal portion extends (the height direction of the gusset bag). Thereby, as for the laminated body, the tearing direction of the gusset bag surely matches the planned tear line. Moreover, you may provide a uniaxially stretched film not in an intermediate | middle layer but in an outermost layer.

  Examples of the uniaxially stretched film include a uniaxially stretched polyethylene film and a uniaxially stretched polypropylene film. Specifically, examples of the uniaxially stretched polyethylene film include “Hiblon” manufactured by Tokyo Ink Co., Ltd., which is a longitudinal uniaxially stretched film, and “Kalariyan” manufactured by Denka Co., Ltd., which is a lateral uniaxially stretched film. In addition, examples of the uniaxially stretched polypropylene film include “Nobrene” manufactured by Tokyo Ink Co., Ltd. and “MCMD-AS” manufactured by Futamura Chemical Co., Ltd., which are longitudinal uniaxially stretched films.

  A laminate comprising an outermost layer, an innermost layer, and an intermediate layer used as necessary can be produced by a known method such as a dry laminating method using an adhesive or an extrusion laminating method using a thermoadhesive resin.

  Next, the opening method of the gusset bag which concerns on this embodiment is demonstrated. FIG. 3 is a schematic cross-sectional view of the gusset bag according to the present embodiment as viewed from above.

  When the easy opening portion 41a of the side seal portion 4a, which is one of the side seal portions, is used as the tear start portion, first, the upper portion of the gusset bag and the lower portion of the gusset bag with the easy opening portion 41a of the side seal portion 4a as a boundary. And the easy-opening portion 41a as a tearing start portion, the gusset bag 1 is torn from the cut 45a in a direction orthogonal to the extending direction of the side seal portion. By gripping only one side seal portion 4a, tearing proceeds in the two directions of the plane portion 21 and the side portion 31, as indicated by the arrow (1) in the figure, and the side seal portion. 4b, 4c are reached.

  In the case of the gusset bag in which the scar group of the easily opened portion in this embodiment is not provided, when the tear reaches the side seal portions 4b and 4c, the side seal portions 4b and 4c become resistance, and the inner end edges 42b and 42c. The tearing stops. However, in the case of the gusset bag of this embodiment, easy-opening portions 41b and 41c including scar groups 43b and 43c straddling the inner end edges 42b and 42c of the side seal portions 4b and 4c are provided. Therefore, when tearing reaches the side seal portions 4b and 4c, the side seal portions 4b and 4c can be easily torn, and the tears cross over the side seal portions 4b and 4c, and the arrows ( As in 2), the tearing progresses to the flat surface portion 22 and the side surface portion 32, respectively.

  Finally, the tear reaches the side seal portion 4d, and the side seal portion 4d can be easily torn by the easy-open portion 41d including the scar group 43d straddling the inner end edge 42d of the side seal portion 4d. . Thereby, the part above a tear line among gusset bags can be completely isolate | separated from the lower part, and a gusset bag can be opened. Since the upper and lower parts are separated, no belt-like dust is generated as in the prior art.

  As described above, the gusset bag of the present embodiment has the V-shaped top portion 320 and the side seal portions 4b and 4c of the side surface portion 32 opposite to the side surface portion 31 adjacent to the side seal portion 4a that has started tearing. 4d can be easily cut. Further, the gusset bag of the present embodiment does not reduce the volume because there is no seal portion including the V-shaped top portion of the side surface portion that reduces the volume of the content storage portion as in the conventional case.

  Note that any side seal part 4b, 4c, 4d other than the side seal part 4a that has started tearing is not torn, and only the flat part 21 and the side part 31 adjacent to the side seal part 4a are torn. An object can be taken out, but at least one of the remaining side seal portions 4b and 4c is torn, and among the four surfaces of the pair of flat surface portions 21 and 22 and the pair of side surface portions 31 and 32, If the three sides are torn, the contents can be easily taken out from the gusset bag. Therefore, the easy opening may be at least at one side seal part, and may be at two side seal parts. In order to completely separate the part above the tear line from the lower part, Most preferred are all on the side seals.

  Next, the contents storage body 11 in which the contents are stored in the gusset bag 1 of the present embodiment will be described. FIG. 4 is an external view showing a state in which the content container 11 is opened. In the example of FIG. 4, a plurality of contents 7 are stored in the contents storage unit 6, and the height of the contents 7 is higher than the tear line 8.

  The content container 11 according to the present embodiment has a tear line 8 connecting the easy-opening portions 41a, 41b, 41c, and 41d when the content 7 is an individual package in which articles are individually packaged or a solid. Even if the height of the content 7 is higher than that, it can be easily opened by the above-described opening method. Since the contents 7 are stored, the side portions 31 and 32 are folded, and the cross section of the gusset bag is substantially square. Therefore, when the content container 11 after opening is made to stand on its own, the portion of the content 7 that is higher than the tear line 8 of the gusset bag, that is, (the height dimension of the content 7) (from the lower end of the gusset bag). A portion obtained by subtracting the height dimension up to the tear line 8 protrudes from the content storage portion 6 of the gusset bag.

  Therefore, it is easy to take out the contents from the contents storage body 11, and even when a plurality of various types of contents are stored, it is possible to easily identify which type. Moreover, it has four side part seal parts, and these side part seal parts function as a pillar when the gusset bag is self-supporting. As a result, even a gusset bag with a high height is excellent in self-supporting and aesthetic appearance when the contents are reduced. By arranging and storing the contents, the aesthetics will be further improved.

  The gusset bag of this invention can be used especially suitably as an exterior bag of an individual package. The article filled in the individual package may be any material such as a solid, liquid, or powder. More specifically, three- or four-sided bags such as sprinkles, stick packaging such as instant coffee and stick sugar, and individual packaging of drip coffee. In particular, the stick wrapping body and the individual wrapping body of a larger drip coffee have an elongated shape, and the gusset bag can be opened while part of the wrapping bag protrudes from the content storage portion 6 while being self-supporting. Therefore, it is a preferred mode of use of the gusset bag of the present invention that is excellent in self-supporting properties and can be easily opened.

  The gusset bag 1 of the present embodiment further has a bottom surface portion 5. When the bottom part is formed by folding the flat part without having the bottom part, the bottom seal part that seals the lower end part of the pair of flat parts is located between the mounting surface and the bottom part. If the weight of the object is large, it is self-supporting, but if it is small, the bottom seal portion prevents the gusset bag from self-supporting. As for the gusset bag 1 of this embodiment, the plane parts 21 and 22 and the side parts 31 and 32 are provided with the bottom face part 5 via the seal part. Specifically, the periphery of the bottom surface portion 5 is joined by the flat surface portions 21 and 22, the side surface portions 31 and 32 and the lower end seal portion 54, and is placed on the placement surface by the bottom surface portion 5 to the lower end seal portion 54. The seal portion does not exist between the placement surface and the bottom surface portion, and even if the weight of the contents is small, it is self-supporting. The folding shape of the bottom surface before filling the contents is not limited to the present embodiment, and any shape may be used.

  As described above, the gusset bag 1 of the present embodiment includes the side seal portion 4a that has started tearing, the side portion 31 opposite to the side portion 31 that is opposite to the V-shaped top portion 320, and all the side seals. Since the parts 4a, 4b, 4c and 4d can be easily torn, they can be easily opened. Further, without reducing the volume of the gusset bag, the contents 7 can be stored even if they are higher than the position of the tear line, and even in that case, they can be reliably opened.

  Next, an example of the manufacturing method of the gusset bag of this embodiment is demonstrated. First, the end portions of the rectangular sheet material constituting each of the pair of flat surface portions 21 and 22 and the pair of side surface portions 31 and 32 are joined by heat sealing to form side seal portions 4a, 4b, 4c, and 4d. To form a tubular body of the gusset bag.

  Next, the member which comprises the fold-in bottom part 5 as mentioned above is manufactured. The manufacturing method of the member which comprises the folded bottom face part 5 forms the center fold line 51 in the center of a rectangular sheet material, for example, uses the two points on the center fold line 51 as a base point, and a base point and a sheet | seat The sections connecting the two corners at both ends of the material are folded in the same direction as the folding direction of the central fold line 51 to form a diagonal fold line 52, outside the two base points of the central fold line 51. It can be manufactured by bending in the opposite direction.

  And the member which comprises the folded bottom face part 5 is inserted in the opening which becomes a lower part of a gusset bag among two openings of a cylinder, and the edge of the member which comprises the edge of a cylinder and the bottom face part 5 The edge is joined by heat sealing to form the lower end seal portion 54, and the gusset bag 1 is formed.

  Or the rectangular sheet material which comprises a pair of side surface parts 31 and 32 is folded in V shape, a fold line is faced | matched, and it is a side part by the both ends of the member which comprises the bottom face part 5 folded in the same shape as the above-mentioned 31 and 32 are pinched and fixed. And the member is pinched | interposed with the sheet | seat material which comprises a pair of plane parts 21 and 22, side seal part 4a, 4b, 4c, 4d and the lower end seal part 54 are formed by heat seal, and the gusset bag 1 is formed.

  Then, in the gusset bag folded in a flat shape with the two side seal portions 4a and 4c, 4b and 4d overlapping, outer end edges 44a and 44b of the side seal portions 4a, 4b, 4c and 4d, respectively. , 44c, 44d are provided with cuts 45a, 45b, 45c, 45d by a metal blade for forming cuts. The scar group 43a includes the side seal portions 4a, 4b, 4c, and 4d and the content storage portion forming surface portions 21, 22, 31, and 32 across the inner end edges 42a, 42b, 42c, and 42d of the side seal portions. , 43b, 43c, 43d are provided by a metal blade for forming a scar group. In a gusset bag folded in a flat shape, a metal blade can be applied from one flat surface side, and a receiving portion of the metal blade can be applied to the other flat surface portion to provide scar groups 43a, 43b, 43c, 43d. By applying metal blades from both the flat surface portions 21 and 22 side, it is possible to form the scar groups 43a, 43b, 43c, and 43d provided from the outer surfaces of both the flat surface portion and the side surface laminate. The metal blades applied from both the plane parts 21 and 22 side are, for example, a metal blade applied from a plurality of square pyramid-shaped metal blades arranged in a staggered pattern from one plane part side and a metal blade applied from the other plane part side. By using metal blades that engage with each other so that the tips of the blades do not collide with each other so as to enter each other, all the scar groups 43a, 43b, 43c, 43d are formed on the flat surface side and the side surface side. A group of scars including through-holes provided from the outer surfaces of both laminates is formed, and easier tearing, that is, tearing with a light force can be performed. Through the above-described steps, easy-opening portions 41a, 41b, 41c, and 41d including the scar groups 43a, 43b, 43c, and 43d and the cuts 45a, 45b, 45c, and 45d are formed in the gusset bag 1.

  In the above-described embodiment, the bottom portion is described, but the bottom portion may not be provided. When the bottom surface portion is not provided, the lower portions of the flat surface portions 21 and 22 are folded to form the bottom surface and can be self-supporting. In this case, the bottom seal portion at the lower end with the flat portions 21 and 22 is located at the bottom of the gusset bag.

  In the above-described embodiment, a set of four easy-opening portions each including a scar group and a cut provided at substantially the same height position is provided as a set, but a set of easy-opening portions is provided. A plurality of easy-opening portions may be provided at the position. In this case, when the contents are the individual package as described above, the contents may be opened at a height at which the contents are exposed from the opening, or may be opened at a height at which the contents are not exposed from the opening. If the contents are powder or the like, the opening height can be changed depending on the remaining amount of the contents, and the user's favorite opening mode can be selected.

  In the above-described embodiment, the side seal portion has a cut as a part of the easy-open portion, but at least one easy-open portion has no cut and the side portion from the content storage portion forming surface portion. Only a scar group extending across the inner edge of the seal part to the outer edge of the side seal part may be provided. In that case, tearing starts from the scar group. Since the scar group is a group with a plurality of scars having a width, there is a possibility that the tear line will not be torn in the assumed direction when the tear line moves from the scar to the scar when it is used as the tear start portion. For this reason, it is preferable that a cut is provided at least in the easy-opening portion serving as a tear start portion that determines the tear direction. Or, in the case of a scar group extending to the outer edge, the width dimension of the scar group in the height direction of the gusset bag is more on the outer edge side than the inner edge side of the side seal portion so that the tear direction can be easily determined. It is preferable that it is small. At this time, the width dimension of the scar group in the height direction of the gusset bag may be gradually decreased from the inner end edge side to the outer end edge side of the side seal portion, or gradually decreased. May be. Further, the scar group extending to the outer edge is not continuous from the scar group straddling the inner edge of the side seal part to the outer edge of the side seal part, and has a part without the scar group in part. It may be. Further, the easy-open portion has no cuts, and the scar group does not extend from the contents storage portion forming surface portion to the outer edge of the side seal portion across the inner edge of the side seal portion. It may be provided. In this case, since the easy-opening portion serving as the tear starting portion has neither a cut nor a scar group at the outer edge of the side seal portion, the gusset bag is placed so that the scar group becomes the edge, and the side seal portion The tearing can be started from there by bending near the inner edge of the. Moreover, the easy-opening part used as a tearing start part may have both the scar group extended to the outer end edge of a side part seal part, and a notch | incision. In this case, the tearing direction can be determined, and tearing can be easily started with a light force.

  In the above-described embodiment, the four sheet materials that are the flat surface portion and the side surface portion are joined to form the cylindrical body of the gusset bag. You may form the cylinder of a gusset bag by forming four. Moreover, you may form a gusset bag from a pair of plane part and bottom face part, or a pair of side part and bottom face part consisting of one sheet material. Furthermore, in the above-described embodiment, the V-shaped top portions 310 and 320 of the side surface portions 31 and 32 extend from the upper end to the lower end of the gusset bag 1, and the outside is folded from the base point on the central fold line 51 of the bottom surface portion 5. The center fold line of the bottom surface portion extends the entire length in the width direction of the gusset bag, and the lower portion is folded from the base point on the V-shaped top portion of the side surface portion. It may be a bag.

  In the above-described embodiment, in order to make the tear direction coincide with the planned tear line, for example, it is preferable to use a uniaxially stretched film for the intermediate layer, but without using the uniaxially stretched film, a straight line that matches the planned tear line. A continuous or intermittent cut line may be provided to guide the tear direction. Such a cut line is, for example, a line that semi-penetrates or penetrates one or a plurality of layers of the laminate from the outermost layer side, and can be provided by laser machining or metal blade machining. However, it is preferable to use a uniaxially stretched film in order to provide the cut line because the processing step increases by one step.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to these embodiment and its modification. Additions, omissions, substitutions, and other modifications can be made without departing from the spirit of the present invention.

  In this specification, words indicating directions such as “up, down, vertical, horizontal, vertical, horizontal, front, back, outside and inside” are used to describe these directions in the configuration of the present invention. . Accordingly, these terms used to describe the specification of the present invention should be interpreted relatively in the configuration of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Gazette bag, 11 ... Contents container, 21, 22 ... Plane part, 31, 32 ... Side part, 310, 320 ... V-shaped top part, 4a, 4b, 4c, 4d ... Side part seal part, 41a, 41b, 41c, 41d ... easy-opening portion, 42a, 42b, 42c, 42d ... inner edge, 43a, 43b, 43c, 43d ... scar group, 44a, 44b, 44c, 44d ... outer edge, 45a, 45b, 45c , 45d ... cut, 5 ... bottom part, 51 ... center fold line, 52 ... hatched fold line, 53 ... triangular wing, 54 ... lower end seal part, 6 ... content storage part, 7 ... contents (individual packaging bag), 8 ... tear line

Claims (9)

It is made of a soft packaging material, and joins at least a pair of flat surface portions and a pair of side surface portions, and a side portion of the soft packaging material forming the pair of flat surface portions and the pair of side surface portions. A side seal part and a content storage part surrounded by the content storage part forming surface part,
An easy opening part is provided in a region including a part of the side seal part,
The easy-opening part has a scar group formed so as to straddle an inner end edge of the side seal part which is a boundary line between the side seal part and the content storage part forming surface part. bag.   2. The gusset according to claim 1, wherein there are four side seal portions, and the easy-open portions are provided at substantially the same height in each of all the side seal portions. bag.   The gusset bag according to claim 1 or 2, wherein the scar group extends to an outer edge of the side seal portion in the easy-open portion.   The gusset bag according to any one of claims 1 to 3, wherein the easy-opening portion is a combination of the scar group and an incision provided in an outer edge of the side seal portion.   The gusset bag according to any one of claims 1 to 4, wherein the flexible packaging material is a laminated body including a uniaxially stretched film stretched in a tearing direction for opening the gusset bag.   The said gusset bag has a bottom face part further, The gusset bag of any one of Claims 1-5 characterized by the above-mentioned.   The gusset bag according to any one of claims 1 to 6, wherein the easy-opening portions are provided at a plurality of height positions of the side seal portion.   A content storage body, wherein a plurality of individual packaging bodies are stored as contents in any of the gusset bags according to claim 1.   The content container according to claim 8, wherein a height of the individual package is higher than a height to an easy opening portion of the gusset bag.

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