JP6471019B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag, and more particularly to a reseal function after opening.

  Conventionally, various packaging bag opening structures and re-sealing structures have been proposed.

  Patent Document 1 describes a packaging bag that can be resealed without using a separate member, and that stops cutting of the easy cutting line at a predetermined position when cutting the easy cutting line and separating the extraction path. Has been. An overhang seal portion is provided from one side seal portion toward the other side seal portion, and a content outflow passage through which the content is taken out is provided between the top seal portion and the overhang seal portion. In addition, a content storage portion that communicates with the content outflow passage is provided below the overhanging seal portion, an easy cutting line is provided in the overhang sealing portion, and an opening for cutting the content outflow passage and providing an opening in the top seal portion A notch is provided, and a cutting stop is provided at the tip of the easy cutting line. The cutting stop part consists of a semicircular arc and a straight line part. The semicircular arc is provided so that the easy cutting line passes through the center of the semicircular arc and reaches the point that bisects the semicircular arc. It is provided so as to face the side seal portion.

  In Patent Document 2, the cutout portion can be easily folded and hooked on the pouch at the time of opening without requiring significant modification of the filling machine. There is described a refill packaging bag which is obtained and stably performs a refill operation. A note located between the extended seal part and the container side part that is continuous from the upper seal part toward the container bottom side inside the container at one corner side of the upper seal part formed by laminating the upper parts of the substantially square front and back films. An outlet portion is provided, a dividing line portion that intersects the opening opening planned line of the spout is provided in the extension seal portion, and a cut-off means is provided at the upper end of the dividing line. In addition, a fold line toward the upper part of the packaging bag connected to the dividing line is provided at the lower end.

JP2013-224167A JP 2010-173688 A

  However, the resealing function of conventional packaging bags is not always satisfactory in terms of simplicity and certainty, and further improvements are required.

  From the standpoint of simplicity and certainty of resealing, a zip or a chuck may be used. However, when the content is a powder or the like, it is relatively difficult to adjust the content extraction amount. In many cases, the contents become clogged and become an obstacle to resealing. Further, there is a problem that it is relatively difficult to determine from the appearance whether the zip or the chuck is completely resealed.

  An object of the present invention is to provide a packaging bag having a resealing function capable of easily and reliably resealing a spout, without clogging the contents, and easily distinguishing the resealed state from the appearance. It is in.

  The present invention is a spout portion that communicates with a first surface sheet, a second surface sheet that opposes the first surface sheet and forms a bag together with the first surface sheet, and a content storage portion, It extends to either the left half or the right half of the top seal part that joins the upper end of the first face sheet and the upper end of the second face sheet, and the upper end part of the top seal part extends left and right along the cut line. A packaging bag having a spout portion in which an opening is formed by cutting, which is the lower end side of the bag from the cutting line on the other of the left half and the right half of the top seal portion and is substantially the same as the cutting line Cutting the easy cutting line formed in parallel, the cutting stop part formed before reaching the spout part at the end of the easy cutting line, and cutting to the cutting stop part along the easy cutting line The top seal part formed with the locking part provided at the end of the tongue piece, and the front The locking portion locks the folded end portion by contacting the folded end portion of the spout portion by folding the top seal portion tongue toward the spout portion side with the spout portion folded back. It is characterized by doing.

In one embodiment of the present invention, the bag includes a folding line that is formed on the lower end side of the bag from the cut line and substantially parallel to the cut line, and is capable of folding back the spout part. In a state where the portion is folded back along the folding line, the top seal portion tongue piece is folded back toward the spout portion, thereby contacting the folded end portion of the spout portion and locking the folded end portion.
In another embodiment of the present invention, it further includes a side gusset sheet that is inserted and joined to both sides of the first side sheet and the second side sheet, and the opening is the first side sheet after cutting. And the upper end of the second side sheet and the upper end of the side gusset sheet.

  In still another embodiment of the present invention, the top seal portion tongue piece includes the first surface sheet, the second surface sheet, and the side gusset sheet.

  According to the present invention, the spout can be easily and reliably resealed without using a zip or a chuck, and the resealed state can be easily determined.

It is a top view of the packaging bag of an embodiment. It is explanatory drawing at the time of opening of the packaging bag of embodiment. It is explanatory drawing at the time of resealing of the packaging bag of embodiment. It is a top view of the packaging bag of other embodiments. It is a disassembled perspective view of the packaging bag of FIG. It is explanatory drawing at the time of opening of the packaging bag of FIG. It is point seal | sticker part explanatory drawing of the packaging bag of FIG. It is a top view of the packaging bag of other embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<First Embodiment>
<Configuration>
FIG. 1 shows a plan view of a packaging bag in the present embodiment. The packaging bag is configured, for example, by joining a first surface sheet 11 as a top sheet and a second surface sheet 12 as a back sheet, for example, with their upper ends, lower ends and sides joined together. In the following description, the joint portion at the upper end is referred to as a top seal portion, the joint portion at the lower end is referred to as a bottom seal portion, and the side joint portion is referred to as a side seal portion. The first side sheet 11 and the second side sheet 12 may be formed by folding a single sheet, in addition to different sheets.

  The basic configuration of the packaging bag is to join the first side sheet 11 and the second side sheet 12 into a cylindrical shape, and is inserted between both sides of the first side sheet 11 and the second side sheet 12. A side gusset sheet constituting the side gusset part may be interposed, or a bottom gusset sheet constituting the bottom gusset part inserted between both lower ends of the first face sheet 11 and the second face sheet is interposed. May be. These will be described later.

  The 1st surface sheet 11 and the 2nd surface sheet 12 are normally comprised from a resin film. The resin film constituting the sheet is required to have basic performance as a packaging body such as impact resistance, wear resistance, and heat resistance. Moreover, when joining by heat sealing, heat sealability is requested | required further. The heat sealability can be imparted by laminating a sealant layer on the base film layer.

  The top seal portion 20 is formed by joining the upper peripheral edges of the first surface sheet 11 and the second surface sheet 12. The top seal portion 20 in the present embodiment is not formed symmetrically, and the top seal portion 20 in the left half is formed more on the lower end side than the top seal portion 20 in the right half. The lower end of the top seal portion 20 defines a bag formed by the first side sheet 11 and the second side sheet 12, that is, the upper end of the content storage unit 50. The side seal portion 17 is formed by joining the side peripheral edge portions of the first surface sheet 11 and the second surface sheet 12. The bottom seal part 13 is formed by joining the lower edge peripheral parts of the first face sheet 11 and the second face sheet 12.

  The content storage unit 50 is configured as an internal space formed by joining the upper end, the lower end, and both sides of the first side sheet 11 and the second side sheet, and the top seal part 20, the side seal part 17, and the bottom seal part 13 is configured as a bag surrounded by 13. The content stored in the content storage unit 50 is a solid material such as a granular material, a semi-solid material such as a jelly or gel, or a liquid material such as a shampoo or a liquid detergent, but is not particularly limited. In the present embodiment, description will be made taking powder as an example.

  The content storage unit 50 is formed over substantially the entire region in the left-right direction and the lower end direction of the packaging bag, but is different in the upper end direction. That is, the upper end of the content storage unit 50 is the top of the top seal part 20 that joins the upper ends of the first side sheet 11 and the second side sheet 12, and the left half or the right half is the side of the packaging bag. It extends to the vicinity of the upper end, and does not extend to the vicinity of the upper end on either the left half or the right half, but extends to the lower end. In the figure, in the top seal part 20, the content storage part 50 extends to the vicinity of the upper end in the right half, does not extend to the vicinity of the upper end in the left half, and extends only to the lower end side. In other words, the top seal portion 20 is formed only in the vicinity of the upper end of the packaging bag in the right half, and is formed in the left half so as to extend not only near the upper end of the packaging bag but also to the lower end side. Although the upper end position in the left half of the content storage part 50 is about 1/6 of the up-down direction length of a packaging bag in the figure, it is not specifically limited. However, in consideration of the capacity of the content storage unit 50, it is preferable to keep the content storage unit within about 1/4. On the other hand, in the right half of the top seal portion 20, the portion of the content storage portion 50 that extends to the vicinity of the upper end of the packaging bag constitutes a spout portion 52 that communicates with the content storage portion 50.

  A tear line 21 is formed in the left-right direction on the top seal portion 20 of the packaging bag. The cut line 21 is formed on the lower half side of the packaging bag in the right half of the top seal part 20 rather than the upper end part of the spout part 52. That is, the cutoff line 21 is formed so as to cross the spout part 52. Further, the tear line 21 is formed on the upper end side of the packaging bag in the left half of the top seal portion 20 rather than the upper end of the content storage portion 50. Opening notches 21 a and 21 b are formed at the left and right side ends of the packaging bag along the cut line 21. The user of the packaging bag cuts out the upper end of the top seal portion 20 along the left and right opening notches 21a and 21b and the cut line 21 when opening. Since the tear line 21 is formed on the lower end side of the packaging bag from the upper end part of the spout part 52, when the top seal part 20 is cut in the left-right direction along the tear line 21, the upper end part of the spout part 52 is cut off. As a result, an opening exposed to the outside of the spout 52 is formed. Since the opening communicates with the content storage unit 50, the powder stored in the content storage unit 50 can be poured out through the opening.

  On the left half side of the top seal portion 20, that is, on the side where the spout portion 52 is not formed, an easy cutting line 23 is formed substantially parallel to the cutting line 21 on the lower end side of the packaging bag from the cutting line 21. A cutting notch may be formed at the tip of the easy cutting line 23. Further, a cutting stop portion 26 is formed at the end of the easy cutting line 23 before reaching the spout portion 52. The easy cutting line 23 is a line for facilitating cutting the packaging bag along the line, and may be composed of the same kind of line as the cut line 21. In this sense, the easy cut line 23 may be a second cut line.

  The cutting stop portion 26 is provided at the approximate center in the left-right direction of the packaging bag and is connected to the end of the easy cutting line 23. Specifically, the cutting stop portion 26 is a vertically long oval hole extending in the vertical direction. The upper end of the hole is located between the cut line 21 and the easy cutting line 23, and the lower end of the hole is the easy cutting line 23. It is located on the lower end side and on the upper end side with respect to the content storage unit 50. In the figure, a part of the content storage part 50, that is, the part facing the lower end of the cutting stop part 26 is recessed toward the lower end side of the packaging bag, and the lower end of the hole extends into this recess. By forming the cutting stop portion 26 from a hole, the cutting stop portion 26 stops cutting along the easy cutting line 23 at a substantially central position in the left-right direction, and at the same time a suspension hole for hanging the packaging bag on a hook or the like. Can also function.

  A locking portion 24 is formed at the end of the belt-like portion between the cut line 21 and the easy cut line 23. Specifically, the locking portion 24 is a clip in which one end is cut off from the first side sheet 11 and the second side sheet 12 by a U-shaped cut and the other end is connected to the sheet, and the U-shaped cut. Is formed so as to face the spout portion 52. This clip has the same elastic force as the first surface sheet 11 and the second surface sheet 12, and can be locked with an object interposed therebetween. When the upper end of the packaging bag is cut off by the cut line 21 and further cut to the cutting stop part 26 by the easy cutting line 23, the top seal part 20 has one end connected to the spout part 52 and the other end opened. 22 and the locking portion 24 is located at the end of the tongue piece 22 (the end opposite to the base of the tongue piece).

  The spout portion 52 that communicates with the content storage portion 50 is formed with a fold line 25 that extends substantially from the cutting stop portion 26 in the left-right direction on the extension line of the easy cutting line 23. In the figure, the folding line 25 is formed on the upper end side of the packaging bag with respect to the easy cutting line 23, but may be formed on an extension line of the easy cutting line 23. In short, the bend line 25 may be formed between the cut line 21 and the easy cut line 23 or on an extension line of the easy cut line 23. A folding notch may be formed at the end of the folding line 25 (the end opposite to the cutting stop 26). Moreover, a notch part may be formed in the cutting | disconnection stop part 26 in the site | part to which the bending line 25 is connected, and bending may be made easy.

Thus, the packaging bag of this embodiment is
(1) The cutoff line 21 is formed at the upper end of the top seal portion 20. (2) On the right half side of the top seal portion 20, the contents storage portion 50 extends to the vicinity of the upper end portion to form the spout portion 52.
(3) The opening of the spout 52 is formed by cutting the upper end of the top seal 20 to the left and right along the cut line 21. (4) The packaging bag is closer to the left half of the top seal 20 than the cut line 21. An easy cutting line 23 is formed at the lower end side of the wire, and a cutting stop 26 is formed at the end of the easy cutting line 23. (5) A locking portion 24 is formed at the end between the cut line 21 and the easy cutting line 23. (6) A fold line 25 is formed on a substantially extended line of the easy-cut line 23 of the spout 52, and an opening is formed in the spout 52 at the time of opening by these components. It reseals the open part.

  That is, when pouring out the powder stored in the content storage unit 50, first, the upper end of the top seal unit 20 is cut left and right along the cut line 21. For example, cutting is started from the opening notch 21a at the left end, and the upper end is cut along the cutting line 21 in the right direction. Since the cutoff line 21 crosses the spout portion 52, an opening is formed in the spout portion 52 by cutting the top end of the top seal portion 20. Grasp the packaging bag and tilt it by the required amount to pour out powder from the opening.

  When the opening of the spout 52 is resealed, it begins to cut from the cutting notch at the left end along the easy-to-cut line 23, cuts to the right, and the top seal 20 is moved to the cutting stop 26. Disconnect. By this cutting, a top seal portion tongue piece 22 having one end connected to the spout 52 and the other end cut from the top seal portion 20 is formed. A locking portion 24 is formed at the end portion (left end portion) of the top seal portion tongue piece 22.

  Next, the spout 52 is folded along the fold line 25 and the opening is directed to the lower end side. Then, the top seal portion tongue piece 22 is folded back along the root toward the spout portion 52, the locking portion 24 is positioned on the right end side of the packaging bag, and the locking portion 24 is moved to the folded end portion of the spout portion 52. The opening is resealed by being pinched.

  Hereinafter, the opening operation and the resealing operation will be described in detail.

<Opening action>
FIG. 2 is an explanatory diagram in the case where the upper end of the top seal part 20 is cut off to form an opening in the spout part 52.

  First, as shown in FIG. 2A, the upper end of the top seal portion 20 is cut off in the left-right direction along the cut line 21. In the drawing, the cut is started from the left end portion and cut toward the right direction, but conversely, it may be cut from the right end portion and cut toward the left direction.

  FIG. 2 (b) shows a state in which the upper end of the top seal portion 20 is all cut along the cut line 21. An opening 52 a is formed at the upper end of the spout 52. As can be seen from the figure, the diameter of the opening 52a is determined by the width in the left-right direction of the spout 52 that the cut line 21 crosses, so that the diameter of the opening 52a is made relatively large to pour out the contents. In order to facilitate, the width of the spout 52 is also set to an appropriate width. The width of the spout 52 may be gradually narrowed toward the upper end and set to a desired width at the position of the cutoff line 21.

  FIG.2 (c) shows the state which is pouring out the powder which is the contents. The packaging bag is gripped and tilted, and the powder is poured out with the opening 52a facing downward. After pouring out a desired amount of powder, the state returns to the state of FIG. Since there is no zip or chuck in the spout 52, the zip or the like is not unnecessarily clogged when the powder is poured out.

<Resealing operation>
FIG. 3 is an explanatory diagram when the opening 52 a of the spout 52 is resealed.

  First, as shown in FIG. 3A, the left half of the top seal portion 20 starts to be cut from the left end portion, and is cut in the right direction along the easy cutting line 23 to the cutting stop portion 26. The cutting stop portion 26 is an oval hole, and the cutting along the easy cutting line 23 reaches the hole of the cutting stop portion 26 and stops. By cutting the top seal portion 20 along the easy-to-cut line 23, the top seal portion tongue piece 22 is connected to the spout portion 52, more specifically, the top seal portion 20 remaining on the left side of the spout portion 52. It is formed. A locking portion 24 is formed at the end of the top seal portion tongue piece 22, that is, the left end portion, and the other end portion, that is, the right end portion is the root of the tongue piece and a part of the hole of the cutting stop portion 26 is formed. Is done. Therefore, the width | variety of the top seal | sticker part tongue piece 22 becomes narrow by the part of a hole in this part. The upper end of the hole of the cutting stop portion 26 extends between the cut line 21 and the easy cutting line 23, but defines the width at the root of the top seal portion tongue piece 22, and the extent thereof is the top seal portion tongue. It is set to such an extent that the strength at the root of the piece 22 is maintained.

  Next, as shown in FIG. 3 (b), the spout 52 is folded along the fold line 25 so that the opening 52a faces the lower end. For example, as shown in the figure, the spout 52 is folded back along the fold line 25. At this time, since one end of the top seal portion tongue piece 22 is connected to the spout side 52, the top seal portion tongue piece 22 is also folded at the same time so that the front and back sides are reversed.

  Next, as shown in FIG. 3C, the spout portion 52 is folded back and the opening 52a is directed to the lower end side, while the top seal portion tongue piece 22 is at one end of the spout portion 52. The root R connected to 52 is folded back toward the spout 52 as a bent portion. At this time, when the spout 52 is folded back, it is preferable to fold the top seal portion tongue piece 22 back to the opposite side, and when the spout 52 is folded back, It is preferable to fold the top seal portion tongue piece 22 back to the opposite side. When the spout 52 is folded back, the top seal portion tongue piece 22 is also located on the front side of the first surface sheet 11, so that the top seal portion tongue piece 22 is connected to the first surface sheet 11 and the second surface. The sheet 12 is turned to the back side so as to straddle the sheet 12, and then folded back to the spout part 52 side by the root R. More specifically, the top seal portion tongue piece 22 on the front side of the first surface sheet 11 is moved from the front side of the first surface sheet 11 to the back side of the second surface sheet 12 using the hole of the cutting stop portion 26. Then, turn back to the spout side 52 at the base R. Therefore, it is preferable to provide the lower end of the hole of the cutting stop portion 26 at a position in consideration of turning the top seal portion tongue piece 22 from the near side to the far side. For example, the vertical distance between the folding line 25 and the lower end of the hole of the cutting stop 26 is a distance substantially equal to the width of the top seal portion tongue piece 22, that is, the distance between the cut line 21 and the easy cutting line 23. .

  However, the present invention is not limited to this, and the spout 52 may be folded back and the top seal portion tongue piece 22 may be folded back.

  The locking portion located at the end (left end) of the top seal portion tongue piece 22 by folding the top seal portion tongue piece 22 toward the spout portion 52 while maintaining the state where the spout portion 52 is folded back. 24 comes to be located at the right end of the spout 52 and comes into contact with the folded end of the spout 52.

  Finally, as shown in FIG. 3 (d), the locking portion 24 positioned at the right end of the spout 52 in the folded state is locked to the folded end of the spout 52. That is, the U-shaped clip of the locking portion 24 holds and holds the folded end portion. Thereby, the spout part 52 is locked in the folded state, and the opening part 52a of the spout part 52 is resealed.

  As can be seen from FIGS. 3 (c) and 3 (d), in this embodiment, the top seal portion tongue piece 22 is folded back toward the spout portion 52 and the locking portion 24 is positioned at the right end of the spout portion 52. Therefore, the distance between the locking portion 24 and the root R in the top seal portion tongue piece 22 needs to be equal to or greater than the distance between the root R and the right end portion of the spout portion 52. For this reason, the top seal portion tongue piece is required. The position and size of the hole of the cutting stop 26 defining the length of 22 are set to a desired value.

  In this embodiment, the opening 52a can be resealed without using a zip or the like, and therefore the zip portion is not clogged with powder and does not become an obstacle to reseal.

  In the present embodiment, the top seal portion 20 can be cut to the cutting stop portion 26 along the easy-cut line 23 at the time of resealing, and then re-sealing can be performed simply by turning back the necessary portion, so that the sealing can be performed very easily. In addition, since the folded state and the locked state can be easily visually confirmed, it can be easily confirmed from the appearance whether or not resealing is performed reliably.

  In this embodiment, since the folded state of the spout part 52 is locked and resealed using the elasticity of the locking part 24, the first surface sheet 11 and the second surface sheet 12 constituting the locking part 24. The elasticity of is preferably a certain level or more. The locking portion 24 can be made of a material different from that of the first surface sheet 11 and the second surface sheet 12 as long as manufacturing and cost are acceptable.

  In the present embodiment, the packaging bag is configured by joining the first surface sheet 11 and the second surface sheet. Next, an embodiment of the packaging bag including the side gusset sheet will be described.

Second Embodiment
FIG. 4 is a plan view of a packaging bag according to another embodiment. The difference from FIG. 1 is that a side gusset sheet 18 is inserted between the sides of the first side sheet 11 and the second side sheet 12 so as to be folded and inserted in a mountain fold state to constitute a side gusset portion. . The side gusset sheet 18 is inserted by being folded between both sides of the first side sheet 11 and the second side sheet 12, and joined at the side seal portion 17, and a total of four points on the left and right sides of the upper and lower ends. Point seal is performed at the seal portion 19. In the figure, the fold of the side gusset sheet 18 is indicated by a one-dot chain line f. In the point seal portion 19, a cutout portion is provided in the side gusset sheet 18 so that the first surface sheet 11 and the second surface sheet 12 are in direct contact with each other. And the second surface sheet 12 are directly joined.

  In the packaging bag shown in FIG. 4, when contents such as powder are stored (filled) in the content storage unit 50, the side-folded side gusset sheet 18 is unfolded and spreads to give the packaging bag thickness.

  FIG. 5 is a schematic exploded perspective view of the packaging bag shown in FIG. 4. In addition, in FIG. 5, although the 1st surface sheet 11, the 2nd surface sheet 12, and the side gusset sheet | seat 18 are shown as a short sheet piece, it is long until actually cut | disconnected to desired length. This is a sheet. The first side sheet 11 and the second side sheet 12 having substantially the same width and length are opposed to each other, and the side gusset sheet 18 is folded between the left and right sides of the first side sheet 11 and the second side sheet 12 respectively. And insert. In this state, the upper ends and the lower ends of the first surface sheet 11 and the second surface sheet, and the left and right sides are joined together. The side gusset sheet 18 is formed with a total of four notches 18a at the upper and lower ends of the left and right sides, and the first side sheet 11 and the second side sheet 12 directly contact each other via the notches 18a. They are in contact with each other and directly joined by the point seal portion 19 described above.

  Also in the packaging bag of the present embodiment, a cutoff line 21 is formed at the upper end of the top seal portion 20, a spout 52 and a folding line 25 are formed on the right half side of the top seal portion 20, and easy cutting is performed on the left half side of the top seal portion 20. A line 23 and a locking part 24 are formed, a cutting stop part 26 is formed at the end of the easy cutting line 23, and the top end of the top seal part 20 is cut left and right along the cutting line 21 to the spout part 52. An opening 52a is formed.

  At this time, since the side gusset sheet 18 is inserted between the first side sheet 11 and the second side sheet 12 in a mountain folded state, the first side sheet 11 and the second side sheet are cut out along the cut line 21. Not only the upper end of 12, but also the upper end of the side gusset sheet 18 inserted between them is cut off simultaneously. The opening 52a of the spout 52 is composed of a cut edge of the first face sheet 11, a cut edge of the second face sheet 12, and a cut edge of the side gusset sheet 18. In this state, the side gusset By unfolding and expanding the sheet 18, the opening 52a can be expanded widely as shown in FIG. 6, and the unfolded part of the side gusset sheet 18 constitutes a pouring path as if it were a bird cage. The adjustment of the amount dispensed is facilitated.

  When resealing the opening 52a, the unfolded side gusset sheet 18 is folded again and inserted between the first sheet 11 and the second sheet 12, and then as shown in FIG. The spout portion 52 is folded back along the folding line 25, the top seal portion tongue piece 22 is folded back, and the folded end portion is locked by the locking portion 24.

  Since the end portion side of the top seal portion tongue piece 22 in FIG. 4 is composed of the first surface sheet 11, the second surface sheet 12 and the side gusset sheet 18, the strength is increased correspondingly, and the spout 52 is folded back. The end can be securely locked.

  In addition, since the edge part side of the top seal | sticker part tongue piece 22 is formed of the cut line 21 and the easy cut line 23, the side gusset sheet | seat 18 is a mountain fold state between the 1st surface sheet 11 and the 2nd surface sheet 12. The first side sheet 11 and the second side sheet 12 are not joined at the end portions thereof and are in a state of being freely separated. Accordingly, the first surface sheet 11 and the second surface sheet 12 can be separated from each other in the locking portion 24 as well, and it may be difficult to maintain an integral shape as a clip.

  In this case, as shown in FIG. 7A, the point seal portion 19 located at the upper portion of the locking portion 24 is extended to reach the locking portion 24 in the lower end direction, and the locking portion 24 also has the first The face sheet 11 and the second face sheet 12 may be joined. Thereby, even if the top seal portion tongue piece 22 is formed by cutting with the cutting line 21 and cutting with the easy cutting line 23, the first side sheet 11 and the second side sheet 12 are joined at the end. There is no divergence, and the locking portion 24 maintains its integral shape. Of course, the formation position and shape of the point seal portion 19 are not limited to this. For example, as shown in FIG. 7B, the point seal portion 19 may be extended in the lateral direction so as to reach the locking portion 24 from the side. Alternatively, as shown in FIG. 7C, the point seal portion 19 may be formed at the position of the locking portion 24. In addition, although the joining means using the point seal | sticker part 19 was demonstrated here, a joining means is not limited to this, For example, the 1st surface sheet 11 and the 2nd surface sheet 12 in the latching | locking part 24 with an adhesive etc. are used. You may join.

  Although this embodiment demonstrated the packaging bag provided with the side gusset sheet | seat 18, next, embodiment of a packaging bag provided with a bottom gusset sheet | seat is described.

<Third Embodiment>
FIG. 8 is a plan view of a packaging bag according to still another embodiment. The difference from FIG. 1 is that a bottom gusset sheet 16 is inserted between the lower ends of the first face sheet 11 and the second face sheet 12 in a state of being folded in a mountain fold to form a bottom gusset portion. The bottom gusset sheet 16 is folded and inserted between the lower ends of the first face sheet 11 and the second face sheet 12, joined at the bottom seal part 13, and point sealed at two point seal parts 14 at the left and right sides of the lower end. Is done. In the figure, the fold of the bottom gusset sheet 16 is indicated by a one-dot chain line f. In the point seal portion 14, a cutout portion is provided in the bottom gusset sheet 16 so that the first surface sheet 11 and the second surface sheet 12 are in direct contact with each other. And the second surface sheet 12 are directly joined.

  Also in the packaging bag shown in FIG. 8, when the contents are stored (filled) in the contents storage unit 50, the bottom gusset sheet 16 that has been folded in a mountain is unfolded and spreads to give the packaging bag a thickness. In addition, the bottom gusset sheet 16 provides a packaging bag that can stand on its own.

  Also in the packaging bag of the present embodiment, a cutoff line 21 is formed at the upper end of the top seal portion 20, a spout 52 and a folding line 25 are formed on the right half side of the top seal portion 20, and easy cutting is performed on the left half side of the top seal portion 20. A line 23 and a locking part 24 are formed, a cutting stop part 26 is formed at the end of the easy cutting line 23, and the top end of the top seal part 20 is cut left and right along the cutting line 21 to the spout part 52. An opening 52a is formed.

  When the opening 52 a is resealed, the spout 52 is folded along the folding line 25, the top seal portion tongue 22 is folded, and the folded end is locked by the locking portion 24.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment, A various deformation | transformation is possible.

  For example, in this embodiment, the fold line 25 is formed in the spout 52, but the fold line 25 can be formed by a ruled line, half cut, or perforation. Further, the folding line 25 may not be formed. In this case, it is preferable to form a notch for bending in order to facilitate bending of the spout 52. The same applies to the easy-to-cut line 23, and it can be formed by perforation or half cut. Further, the cut line 21 and the easy cut line 23 may be configured not to be provided by making the sheet itself a sheet having a straight cut property. As a sheet | seat provided with rectilinear cutting property, the sheet | seat which has the resin film extended | stretched in the left-right direction which is a cutting direction is mentioned. In this case, the cut line 21 and the easy cut line 23 can also be referred to as a cut planned line and an easy cut planned line, respectively, and both can be included in the present invention.

  In the present embodiment, a vertically long oval hole is illustrated as the cutting stop portion 26. However, other than this, for example, a semicircular C-shaped cut may be used. By connecting the end of the easy cutting line 23 to a point that substantially bisects the semicircular arc, when cutting left and right along the easy cutting line 23, the cutting is stopped at the cut of the semicircular arc.

  4 illustrates the packaging bag in which the side gusset sheet 18 is inserted, and FIG. 6 illustrates the packaging bag in which the bottom gusset sheet 16 is inserted. However, the side gusset sheet 18 is inserted and the bottom gusset sheet 16 is inserted. It can also be applied to other packaging bags.

  Moreover, in this embodiment, although it latches by pinching the folding | turning edge part of the spout part 52 with the latching | locking part 24 formed in the edge part of the top seal part tongue piece 22, The folded-back state of the spout port 52 may be maintained by retaining the folded-back state of the top seal portion tongue piece 22 by locking the end portion of the spout port 52 that is not folded back. That is, the top seal portion tongue piece 22 is connected to the spout portion 52 at the root R, and both are composed of the first surface sheet 11 and the second surface sheet 12, and thus have a certain elasticity. Accordingly, the top seal portion tongue piece 22 is folded back at the root R and locked to the end portion of the spout portion 52 in a state where the spout portion 52 is folded back with the opening 52a directed toward the lower end side, and the spout portion 52 is thus secured. The folded state of can be maintained. Further, a mode in which the top seal portion tongue piece 22 is folded twice and locked to the center side end portion of the spout portion 52 is also possible.

  Furthermore, in this embodiment, although the shape of the latching | locking part 24 was made into the clip comprised by the U-shaped cut | interruption, it can be latched to the edge part of the spout part 52 in the state which turned up the top seal | sticker part tongue piece 22 It will be apparent from the above description that any shape having a function, such as a “U” shape, can be used.

11 First side sheet, 12 Second side sheet, 13 Bottom seal part, 16 Bottom gusset sheet, 17 Side seal part, 18 Side gusset sheet, 14, 19 Point seal part, 20 Top seal part, 21 Cut line, 21a For opening Notch, 22 Top seal part tongue piece, 23 Easy cutting line, 24 Locking part, 25 Folding line, 26 Cutting stop part, 50 Contents storage part, 52 Outlet part, 52a Opening part.

Claims (4)

A first sheet,
A second surface sheet facing the first surface sheet and forming a bag together with the first surface sheet;
A spout portion communicating with the contents storage portion, extending to either the left half side or the right half side of the top seal portion that joins the upper end of the first side sheet and the upper end of the second side sheet And a spout part in which an opening is formed by cutting the upper end of the top seal part to the left and right along the cutoff line;
A packaging bag comprising:
An easy-cut line formed on the other side of the left half side and the right half side of the top seal part on the lower end side of the bag from the cut line and substantially parallel to the cut line,
A cutting stop portion formed at the end of the easy cutting line and before reaching the spout portion;
A locking part provided at an end of the top seal part tongue piece formed by cutting to the cutting stop part along the easy cutting line,
The locking portion is in a state in which the spout portion is folded back, and the top seal portion tongue piece is folded back toward the spout portion to contact the folded end portion of the spout portion. The packaging bag characterized by latching a part. A folding line that is formed at a lower end side of the bag from the cut line and is substantially parallel to the cut line and capable of folding back the spout part; and the locking part turns back the spout part along the fold line. 2. The folded-up end portion is brought into contact with the folded-back end portion of the spout portion by folding back the top seal portion tongue piece toward the spout portion in the state where the folded-back end portion is engaged. Packaging bags. A side gusset sheet inserted into and joined to both sides of the first face sheet and the second face sheet, and the opening includes an upper end of the cut first face sheet and a second face sheet. The packaging bag according to any one of claims 1 and 2, comprising an upper end and an upper end of the side gusset sheet. The packaging bag according to claim 3, wherein the top seal portion tongue piece includes the first side sheet, the second side sheet, and the side gusset sheet.

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