JP6591796B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag made of a sheet material and containing sheet-like contents.

  Conventionally, a packaging bag made of a sheet material and containing various contents is widely known. For example, Patent Document 1 discloses a packaging bag in which a cut line is formed on the surface of the packaging bag and a sealing label is attached to the surface of the packaging bag so as to cover the cut line. In such a packaging bag, when the sealing label is pulled and peeled off, the sheet material around the score line is also pulled together with the seal label, and the sheet material of the packaging bag is broken using the score line as a trigger to take out the contents. An opening is formed.

  There is also known a packaging bag in which an opening is formed in advance instead of allowing the user to form an opening. For example, Patent Document 2 discloses a packaging bag for storing a wet tissue. This packaging bag is a packaging bag in which the upper and lower ends and the back fin portion are fused. An opening for taking out contents (wet tissue) is formed on the surface of the packaging bag, and the opening is covered with a lid that is detachably attached to the surface of the packaging bag. When taking out the contents, the lid is peeled off to expose the opening to the outside.

Special table 2013-526466 gazette Patent No. 5416799

  In any packaging bag of Patent Documents 1 and 2, after opening, the packaging bag can be resealed by sticking the lid or the sealing label to the surface of the packaging bag again. That is, the packaging bags of Patent Documents 1 and 2 can be repeatedly opened and closed many times. However, in the case of the packaging bag of Patent Document 1, it is necessary to hold the sealing label with one hand and hold the entire packaging bag with the other hand in both cases of opening and resealing. In other words, the packaging bag of Patent Document 1 has a problem that it cannot be opened / resealed with one hand.

  In the packaging bag of Patent Document 2, a suspension hole for suspending and holding the packaging bag is formed. Therefore, if the packaging bag is suspended and held, it is not necessary to hold down the packaging bag when attaching and detaching the lid, and opening / resealing with one hand becomes possible. However, in the case of the packaging bag of Patent Document 2, since the opening is formed in advance, there is a problem that it is difficult to find the presence or absence of unauthorized opening. In other words, at the timing when the packaging bags are lined up in stores, etc., even if the lid is removed with malicious intent, the contents are given some mischief, and the lid is affixed again, the trace of opening remains. Because it was not, it was difficult to find pranks.

  That is, conventionally, there has been no packaging bag that can effectively prevent unauthorized opening while being easy to open and reseal with one hand. Then, an object of this invention is to provide the packaging bag which can prevent unauthorized opening effectively, while opening / resealing with one hand is easy.

The packaging bag of the present invention is a packaging bag made of a sheet material and containing sheet-like contents, and a pair of seal portions joined to each other at opposite ends of the packaging bag, and the pair of seals Formed on one side of the part and used for hanging the packaging bag, formed on a part other than the seal part, having a length in the width direction of the packaging bag, and covering the score line, the packaging bag The sheet material has tearability in the up and down direction in a state where the packaging bag is suspended from the suspended portion, and the tack seal is attached to the packaging bag. The sheet material is broken from the score line toward the lower edge seal portion, and an opening for taking out the contents is formed. is, score lines end and the lower edge Sea Between the parts, it is drawn patterns continuous in the width direction, characterized in that.

In a preferred embodiment, the pattern continuous in the width direction is a stripe pattern in which linear patterns extending in the width direction are arranged in the height direction .

In another preferable aspect, an auxiliary processing line that extends in the width direction and decreases the strength of the sheet material is further provided between the lower edge seal portion and the cut line. In another preferred aspect, when the opening is formed by breaking the sheet material at the lower end of the tack seal, a locking portion for locking the tack seal to the lower end of the lower edge seal portion is formed, The locking portions are a pair of cuts or U-shaped notches arranged in the width direction at the lower edge of the tack seal.

In another preferred aspect, a locking portion for locking the tack seal to the lower end of the lower edge seal portion is formed at the lower end of the lower edge seal portion when the opening is formed by breaking the sheet material. The locking portion is formed at the lower edge of the lower edge seal portion and is a substantially trapezoidal cutout that becomes narrower toward the upper side. The width of the cut line is W1, the minimum width of the cutout is W2, The maximum width of the notch is W3, the maximum width of the tack seal is W4, the distance from the upper edge of the lower edge seal portion to the upper end of the notch is H1, and the distance from the upper edge of the lower edge seal portion to the lower end of the tack seal is H2. Where W3 <W2 <W3 <W4 and H1 <H2 <H3, where H3 is the distance from the upper end of the lower edge seal portion to the lower end of the lower edge seal portion 16 . In this case, it is desirable that a connection portion where the cut is interrupted is provided in the middle of the cut line .

  According to the present invention, if the tack seal is peeled off in a state where the packaging bag is suspended and held using the suspended lower part or is reattached to the original position, the packaging bag can be easily opened / re-opened with one hand. Can be sealed. Moreover, since the trace which the sheet | seat material fracture | ruptures remains in a packaging bag with opening, unauthorized opening can be discovered effectively. Therefore, according to the packaging bag of the present invention, unauthorized opening can be effectively prevented while being easy to open and reseal with one hand.

It is a front view of the packaging bag which is embodiment of this invention. It is a partial enlarged view of the packaging bag in the opened state. It is a partial enlarged view of the packaging bag of 2nd embodiment. It is a figure which shows a mode that the packaging bag of FIG. 3 was opened. (A) is a schematic longitudinal cross-sectional view of the packaging bag of 1st embodiment, (b) is a schematic longitudinal cross-sectional view of the packaging bag of 2nd embodiment. It is a partial enlarged view of the packaging bag of 3rd embodiment. It is a figure which shows a mode that the packaging bag of FIG. 6 was opened. It is a figure which shows a mode that the packaging bag of FIG. 6 was resealed. It is a front view of another packaging bag. It is a figure which shows the variation of a notch line and a tack seal.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a packaging bag 10 according to an embodiment of the present invention. FIG. 2 is a partially enlarged view when the packaging bag 10 is opened. In the drawings of the present application, in order to facilitate understanding of the invention, the cut line 22 covered with the tack seal 24 is drawn with a thick solid line, but in actuality, the cut line 22 is covered with the tack seal 24. It is not visible from the outside. In addition, “upper” and “lower” in the following description are “upper” and “lower” in a state where the packaging bag 10 is suspended and held using the suspended lower part 20.

  The packaging bag 10 is a flat bag made of a flexible sheet material and having a substantially rectangular shape when viewed from the front. The contents (not shown) are accommodated in the packaging bag 10. The content is not particularly limited as long as it is a dry sheet, but a relatively soft sheet, for example, a mask, a gauze, a wiper, a paper diaper or the like is particularly suitable. Such a sheet-like object is accommodated in the packaging bag 10 in an unfolded state or in a state of being folded into a size corresponding to the packaging bag 10. The contents to be stored may be individually or individually packaged.

  The packaging bag 10 is made of a sheet material. The material of the sheet material can be appropriately changed according to the type of contents, cost, etc., but the sheet material should have basic mechanical characteristics as a packaging body such as impact resistance and wear resistance. Required. Further, the sheet material is also required to have heat sealability for the convenience of production. In the present embodiment, the sheet material is a multilayer sheet in which at least a sealant film that imparts heat sealability and a thermoplastic film that imparts basic mechanical properties as a package are laminated. When high gas barrier properties are required, the sheet material may further have a barrier layer.

  The sealant film includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), polypropylene (PP), ethylene-propylene copolymer (EP), ethylene-α olefin copolymer, ethylene-acrylic acid copolymer. Examples thereof include stretched or unstretched films composed of heat-sealable thermoplastic resins such as a polymer (EAA), an ethylene-methacrylic acid copolymer (EMAA), and an ethylene-vinyl acetate copolymer (EVA).

  Examples of the thermoplastic film include polyester resins (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.), polyolefin resins (polyethylene (PE), polypropylene). (PP) etc.), polyamide resins (nylon-6, nylon-66 etc.), polyacrylonitrile (PAN), polyimide (PI), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polymethyl methacrylate (PMMA) ), One or more layers of stretched or unstretched films composed of thermoplastic resins such as polyethersulfone (PES) and ethylene-vinyl alcohol copolymer (EVOH).

  As a barrier layer (for example, a layer having a gas barrier property or a light barrier property), a metal thin film such as aluminum, a resin film such as vinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or an arbitrary synthesis A film obtained by evaporating (or sputtering) a metal such as aluminum or an inorganic oxide such as aluminum oxide or silica on the resin film can be exemplified. Moreover, instead of using a vapor deposition film, you may vapor-deposit a metal, an inorganic compound, etc. directly on a sealant film or a thermoplastic film. Moreover, you may provide the printing layer for displaying the name, description, and design regarding articles | goods etc. in a sheet | seat body as needed.

  Further, as will be described in detail later, in the present embodiment, since a part of the sheet material is broken and opened in the vertical direction, the sheet material has at least tearability that can be easily broken in the vertical direction. It is desirable. In order to impart tearability, at least one of the films constituting the sheet material is desirably uniaxially stretched. In addition, as long as tearability can be ensured, the film constituting the sheet material may include unstretched or biaxially stretched films.

  The packaging bag 10 of this embodiment is comprised by bending one sheet | seat material and joining one part. That is, when the packaging bag 10 is configured, a cylindrical body is configured by first joining the back surfaces of both ends in the width direction of one sheet material. Then, the packaging bag 10 is comprised by joining the sheet | seat materials which mutually oppose in the upper end and lower end of this cylindrical body. The part which joined the back surfaces of the both ends of the width direction becomes a dorsal fin-shaped vertical seal part (not shown). The vertical seal portion is located at the approximate center of the second surface in the width direction. Further, the joint portions at the upper end and the lower end are an upper edge seal portion 14 and a lower edge seal portion 16, respectively.

  In the present embodiment, the upper edge seal portion 14 is provided with a suspended portion 20 for suspending and holding the packaging bag 10. The hanging portion 20 is a portion where a bar, a hook or the like for hanging and holding the packaging bag 10 is locked. For example, a through hole or a C-shaped cut as shown in FIG. In the case of a C-shaped cut as shown in FIG. 1, a hole through which a bar or the like is inserted is formed by pressing a portion surrounded by the cut. Such a suspending portion 20 is provided substantially at the center in the width direction of the upper edge seal portion 14. However, the suspended portion 20 is not limited to one, and a plurality of suspended portions 20 may be provided as long as they are equally distributed on the left and right. Further, the shape is not limited to a substantially circular shape, and may be another shape, for example, an ellipse elongated in the width direction.

  The first surface 12 of the packaging bag 10 is provided with a score line 22 and a tack seal 24 for enabling the packaging bag 10 to be opened and closed. The cut line 22 is formed in the non-seal portion 18 of the packaging bag 10. More specifically, the cut line 22 is formed at a substantially center in the width direction of the packaging bag 10, that is, at a position below the suspended portion 20. Further, the cut line 22 is formed at a height position of about 1/5 to 1/3 of the lower side of the packaging bag 10. Further, the width of the cut line 22 is about 1/3 of the width of the packaging bag 10. Further, the cut line 22 has an upwardly convex arc shape, and both ends thereof are directed obliquely downward.

  Note that the position and shape of the score line 22 are merely examples, and may be appropriately changed depending on the size and softness of the content to be taken out. That is, as will be described in detail later, in the present embodiment, the cut line 22 is used as a trigger to break the sheet material of the packaging bag 10 and form an opening 32 for taking out the contents. Therefore, the shape and size of the opening 32 for taking out the contents depend on the position and shape of the score line 22. Therefore, it is desirable that the score line 22 is determined according to the aspect of the content to be taken out. In particular, the width of the cut line 22 is made smaller than the width of the contents in the accommodated state. For example, when the gauze is accommodated in the packaging bag 10 in a state of being folded in four, it is desirable that the width of the cut line 22 is smaller than that of the gauze in a state of being folded in four.

  The first surface 12 of the packaging bag 10 is also provided with a tack seal 24 that covers the score line 22. The tack seal 24 has a pressure-sensitive adhesive applied to the back surface, and can be repeatedly attached to and detached from the first surface 12. As long as the tack seal 24 can cover the cut line 22, the shape and size thereof are not particularly limited. However, from the viewpoint of material cost, it is desirable that the tack seal 24 is as small as possible within a range in which the cut line 22 can be covered. In order to facilitate the detection of unauthorized opening, the lower end of the tack seal 24 is located above the lower edge seal portion 16, that is, sealed between the tack seal 24 and the lower edge seal portion 16. It is desirable that the non-sealed portion 18 that is not exposed is exposed. A grip portion 26 to which no adhesive is applied is formed at the upper edge of the tack seal 24. When the user opens the packaging bag 10, the user grips the grip portion 26 and pulls the tack seal 24.

  A pattern 28 that is continuous in the width direction is drawn between the cut line 22 and the lower edge seal portion 16 on the first surface 12 of the packaging bag 10. In the illustrated example, a stripe pattern 28 in which light and dark are alternately arranged is drawn. Such a pattern 28 is provided for facilitating detection of unauthorized opening of the packaging bag 10. However, the illustrated pattern 28 is an example, and may be another pattern as long as it is provided at least between the end portion of the cut line 22 and the lower edge seal portion 16 and is continuous in the width direction.

  Next, the flow when opening and closing the packaging bag 10 configured as described above will be described. The packaging bag 10 of this embodiment can be opened naturally even when the packaging bag 10 is held in the hand, but can be opened with one hand if the packaging bag 10 is held suspended. That is, a hook or a bar is inserted into the suspended portion 20 of the packaging bag 10 so that the packaging bag 10 is suspended. In this state, the tack seal 24 attached to the first surface 12 is pulled downward, and the tack seal 24 is peeled off from the first surface 12. At this time, although the entire packaging bag 10 is pulled downward, the packaging bag 10 stays in place against the pulling force of the tack seal 24 because the suspended portion 20 is locked by a hook or the like. In other words, if the packaging bag 10 is suspended and held by a hook or the like, the user can easily peel off the tack seal 24 without holding the packaging bag 10 by hand.

  When the tack seal 24 is pulled downward and peeled off, a force is applied to the vicinity of both ends of the score line 22, and the sheet material is broken downward from the vicinity of both ends. The breakage of the sheet material proceeds until the lower edge seal portion 16 is reached. Then, finally, as shown in FIG. 2, a band-like tongue piece 30 partially separated from the first surface 12 is formed, and a size corresponding to the band-like tongue piece 30 is formed on a part of the first surface 12. Then, an opening 32 having a shape is formed. If it will be in this state, a user will take out the contents from the said opening part 32. FIG.

  Here, as described above, in the present embodiment, the width of the cut line 22 is made smaller than the width of the contents in the accommodated state. For example, when the gauze is folded in four and accommodated in the packaging bag 10, the width of the cut line 22 is smaller than the width of the four-folded gauze. If the width of the score line 22 is set to such a size, the width of the contents becomes smaller than the width of the opening 32, and therefore, the contents can be prevented from unintentionally dropping after the packaging bag 10 is opened. it can. On the other hand, since the content of the present embodiment is a soft and easily deformable sheet-like material, when the part of the content exposed to the outside is pulled through the opening 32 by hand, the content is opened to the opening 32. It can be deformed in accordance with the shape of and can be pulled out from the opening 32. After taking out one content, if the band-like tongue 30 is lifted so that the band-like tongue 30 covers the opening 32 and the tack seal 24 is re-attached to the original place, the opening 32 will be It is easily blocked and the remaining contents can be stored appropriately. Then, when it is desired to take out the contents again, the tack seal 24 may be pulled and peeled off again.

  Here, the procedure of opening and closing as described above, that is, the tack seal 24 is pulled downward to be peeled off and opened, the contents are pulled out from the opening 32, the tack seal 24 is pasted to the original place and resealed. If the packaging bag 10 is suspended and held, it can be performed with one hand. Since all procedures can be performed with one hand, the user's trouble can be further reduced.

  In the present embodiment, when the packaging bag 10 is first opened, an irreversible process of breaking the sheet material is performed. Therefore, when there is an unauthorized opening, the trace remains clearly as a breakage of the sheet material. In particular, in the present embodiment, a pattern 28 continuous in the width direction is provided between the cut line 22 and the lower edge seal portion 16. When the pattern 28 is broken, the continuity of the pattern 28 is lost at the broken portion. As a result, it is possible to more easily detect the presence or absence of breakage and thus the presence or absence of unauthorized opening.

  Next, another embodiment will be described. FIG. 3 is a partially enlarged view of the packaging bag 10 according to the second embodiment, and FIG. 4 is a partially enlarged view of the opened packaging bag 10. The packaging bag 10 of the second embodiment is similar to the packaging bag 10 of the first embodiment, but an auxiliary processing line 34 is formed between the cut line 22 and the lower edge seal portion 16. Is different. The auxiliary processing line 34 is a line that reduces the strength (stiffness) of the sheet material. For example, a perforation line that intermittently forms cuts and a half-cut line that forms a groove having a depth less than the thickness of the sheet material. Etc. In the present embodiment, the auxiliary processing line 34 is formed immediately above the upper end of the lower edge seal portion 16. The width of the auxiliary processing line 34 is larger than the width of the cut line 22. In addition, the auxiliary processing line 34 has a linear shape that extends straight in the width direction.

  Even in such a packaging bag 10, when the tack seal 24 is pulled and peeled off, the breakage of the sheet material proceeds downward from both ends of the cut line 22. However, the breaking of the sheet material is difficult to proceed beyond the auxiliary processing line 34, and the breaking of the sheet material stops when the auxiliary processing line 34 is reached. In other words, by providing the auxiliary processing line 34, the breakage can be stopped before reaching the lower edge seal portion 16. As a result, if the auxiliary processing line 34 is used, the stop position of the breakage of the sheet material can be freely set, and the degree of freedom of the size and position of the opening 32 can be further improved. Further, when it is not necessary to re-seal the packaging bag 10, the permanent opening 32 can be formed by cutting the strip-shaped tongue piece 30 along the auxiliary processing line 34.

  Further, the auxiliary processing line 34 can also prevent the belt-like tongue piece 30 formed by breaking the sheet material from jumping up. This will be described with reference to FIG. Fig.5 (a) is a schematic longitudinal cross-sectional view of the packaging bag 10 of 2nd embodiment, FIG.5 (b) is a schematic longitudinal cross-sectional view of the packaging bag 10 of 1st embodiment.

  When the packaging bag 10 is opened, a strip-like tongue piece 30 corresponding to the width of the cut line 22 is formed. When there is no auxiliary processing line 34, the base of the strip-like tongue piece 30 has an appropriate elasticity (elasticity) as shown in FIG. 5B, and the strip-like tongue piece 30 draws a gentle arc. , Jumps out to the near side. The tack seal 24 attached to the tip of the strip-shaped tongue piece 30 is positioned at substantially the same height as the opening 32. In this case, when the content is taken out from the opening 32, the content and the adhesive surface of the tack seal 24 are likely to come into contact with each other, causing problems such as a decrease in the adhesive strength of the tack seal 24. In addition, when the content is a relatively weak sheet-like material such as a thin gauze, the sheet-like material hits and adheres to the adhesive surface of the tack seal 24 in the process of taking out, and if it is forcibly removed, the sheet-like material There was also a risk of damage.

  On the other hand, when the auxiliary processing line 34 is provided as in the second embodiment, the auxiliary processing line 34 exists at the base of the strip-like tongue piece 30. In order to facilitate the breakage of the sheet material, the auxiliary processing line 34 is perforated or half-processed to reduce the strength of the sheet material. Since the auxiliary processing line 34 is at the base, the base of the strip-shaped tongue piece 30 has no elasticity (elasticity), and the strip-shaped tongue piece 30 is easily bent from the base. Therefore, as shown in FIG. 5A, the height of the tack seal 24 tends to be lower than the opening 32. As a result, when the contents are taken out from the opening 32, it becomes difficult for the contents and the adhesive surface of the tack seal 24 to come into contact with each other, and problems such as a decrease in the adhesive strength of the tack seal 24 and damage to the contents are effectively obtained. Can be prevented.

  Next, a third embodiment will be described with reference to FIGS. FIG. 6 is a partially enlarged view of the packaging bag 10 according to the third embodiment, and FIG. 7 is a partially enlarged view of the opened packaging bag 10. Further, FIG. 8 is a partially enlarged view of the resealed packaging bag 10. The packaging bag 10 of the third embodiment is similar to the packaging bag 10 of the first embodiment, but differs in that a substantially rectangular notch 36 is formed at the lower end of the lower edge seal portion 16. The notch 36 is formed in the approximate center in the width direction, that is, below the cut line 22. The notch 36 has a substantially trapezoidal shape that becomes narrower as it approaches the upper side, and its minimum width W2 is larger than the width W1 of the cut line 22, and its maximum width W3 is smaller than the maximum width W4 of the tack seal 24 ( W1 <W2 ≦ W3 <W4). The distance H2 from the upper edge of the lower edge seal portion 16 to the lower end of the tack seal 24 is greater than the distance H1 from the upper edge of the lower edge seal portion 16 to the upper end of the notch 36, and the upper edge of the lower edge seal portion 16 The distance H3 is smaller than the distance H3 from the edge to the lower end of the lower edge seal portion 16 (lower end of the notch 36) (H1 <H2 <H3).

  In the packaging bag 10, when opening the packaging bag 10, as in the first embodiment, the tack seal 24 is pulled and peeled off, and the sheet material is broken downward from both ends of the cut line 22. Thereby, the opening part 32 and the strip | belt-shaped tongue piece 30 are formed. When the belt-like tongue piece 30 is hung downward, the tack seal 24 is wider than the notch 36, and therefore, as shown in FIG. 7, a part of both ends in the width direction overlaps with the lower edge seal portion 16. It becomes. When the belt-like tongue piece 30 is simply hung down, the overlapping portion of the tack seal 24 is located on the near side of the lower edge seal portion 16. In the present embodiment, the tack seal 24 or the lower edge seal is twisted to move the overlapping portion of the tack seal 24 to the back side from the lower edge seal portion 16. Then, as shown in FIG. 7, the overlapping portion of the tack seal 24 is attached to the second surface of the lower edge seal portion 16. Thus, when a part of the tack seal 24 is adhered to the second surface of the lower edge seal, the belt-like tongue piece 30 as shown in FIG. As a result, similarly to the second embodiment, problems such as a decrease in the adhesive strength of the tack seal 24 and breakage of the contents can be effectively prevented.

  When resealing the packaging bag 10, as shown in FIG. 8, the strip-like tongue piece 30 and the lower edge seal part 16 are kept with the tack seal 24 adhered to the second surface of the lower edge seal part 16. And the tack seal 24 is adhered to the first surface 12. That is, the packaging bag 10 is valley-folded around the line L in FIG. 7, and the tack seal 24 is attached in the vicinity of the position A. Thus, by lifting and resealing the lower edge seal part 16 together, the entire opening part 32 can be covered, and entry of foreign matter into the packaging bag 10 can be more effectively prevented. Moreover, since it bends on the upper side of the lower edge seal part 16, the size of the packaging bag 10 after resealing can be further reduced.

  As is clear from the above description, the packaging bag 10 can be opened and resealed with one hand in any form of the first to third embodiments. Moreover, even if it is any form of 1st-3rd embodiment, since the trace of an opening called the fracture | rupture of a sheet will remain in the packaging bag 10 if it opens first, an unauthorized opening is easily discovered. be able to.

  In addition, all the structures demonstrated so far are examples, and as long as the hanging part 20, the cut line 22, and the tack seal 24 are provided, other structures may be changed as appropriate. For example, although the pattern 28 continuous in the width direction is illustrated only in FIGS. 1 and 2, the same pattern 28 continuous in the width direction may be applied to other packaging bags 10.

  Further, the position, size, and shape of the score line 22 and the tack seal 24 may be changed as appropriate. For example, as shown in FIG. 9, the cut line 22 and the tack seal 24 may be provided at the approximate center in the height direction of the packaging bag 10. In this case, by pulling and removing the tack seal 24, a large opening having a size approximately half the height of the packaging bag 10 can be formed, and the sheet is relatively large or solid. The product can be easily taken out.

  Further, as long as the cut line 22 has a length at least in the width direction, the shape thereof is not limited, and may be substantially trapezoidal as shown in FIG. 10A or as shown in FIG. Further, it may be a straight line extending in the width direction, or may be a substantially V shape as shown in FIG. However, it is desirable that the cut line 22 has a shape in which both ends thereof are lowered in a direction in which the sheet material is induced to break. In addition, the larger the width in the height direction of the score line 22, the larger the tack seal 24 that covers the score line 22 needs to be. Therefore, it is desirable to keep the width in the height direction small if possible. .

  Further, the cut line 22 does not need to be formed by continuous cuts, and as shown in FIG. 10A, a connecting portion 38 in which cuts are interrupted may be formed in the middle. By providing such a connecting portion 38, it is possible to prevent unintended breakage from proceeding by unintentionally turning up around the cut line 22 during bag making (before attaching the tack seal 24). In FIG. 10 (a), in order to facilitate understanding of the invention, the connecting portion 38 is shown larger than the actual size, but in actuality, the connecting portion 38 is extremely small (about 0.5 mm). is there. A plurality of such connecting portions 38 may be provided as long as they do not hinder the opening of the packaging bag 10.

  Further, the shape of the tack seal 24 is not limited to a substantially trapezoidal shape as shown in FIG. 10 (a), but a substantially triangular shape as shown in FIG. 10 (b), and a substantially elliptical shape as shown in FIG. 10 (c). It is good. Further, for example, as shown in FIG. 2, at the lower end of the tack seal 24, a locking portion 40 such as a pair of cut lines or U-shaped notches arranged in the width direction is formed, and the packaging bag 10 is opened. May insert the lower end of the lower edge seal portion 16 into the locking portion 40 to maintain the unsealed state. Further, instead of the tack seal 24, an engaging portion may be formed at the lower end of the lower edge seal portion 16, and the tack seal 24 may be engaged with the engaging portion 40 of the lower edge seal portion 16.

  Moreover, the form of the packaging bag 10 itself may be modified as appropriate, and is not limited to a rectangular shape, and may be a packaging bag 10 such as a square or a circle. Moreover, the packaging bag 10 is good also as a form which has a gusset (gusset) in both sides and the bottom part. Furthermore, in this embodiment, although the packaging bag 10 was formed with one sheet material, you may comprise with a some sheet material. Further, the sheet material is not limited to a multilayer, and may be composed of a single layer film.

DESCRIPTION OF SYMBOLS 10 Packaging bag, 12 1st surface, 14 Upper edge seal part, 16 Lower edge seal part, 18 Non-seal part, 20 Suspension part, 22 Cut line, 24 Tack seal, 26 Gripping part, 28 Pattern, 30 Band-like tongue piece, 32 opening part, 34 auxiliary process line, 36 notch, 38 joint part, 40 locking part.

Claims (6)

It is a packaging bag made of sheet material and containing sheet-like contents,
A pair of seal parts joined to each other at opposite ends of the packaging bag;
A hanging portion formed on one of the pair of seal portions and used for hanging a packaging bag;
A cut line formed in a portion other than the seal portion and having a length in the width direction of the packaging bag;
A tack seal that covers the score line and is detachably attached to the surface of the packaging bag;
With
The sheet material has tearability in the up and down direction in the state where the packaging bag is suspended at the suspended portion,
The sheet material is broken from the score line toward the lower edge seal portion by peeling off the tack seal toward the lower edge seal portion, which is in a state where the packaging bag is suspended from the hanging portion, and the contents are An opening for taking out is formed ,
A continuous pattern in the width direction is drawn between the end of the score line and the lower edge seal part.
A packaging bag characterized by that. The packaging bag according to claim 1,
The packaging bag characterized in that the pattern continuous in the width direction is a stripe pattern in which linear patterns extending in the width direction are arranged in the height direction . The packaging bag according to claim 1, further comprising:
A packaging bag comprising an auxiliary processing line extending in the width direction between the lower edge seal portion and the cut line and reducing the strength of the sheet material. A packaging bag according to any one of claims 1 to 3,
At the lower end of the tack seal, when the sheet material is broken to form an opening, a locking portion is formed to lock the tack seal to the lower edge seal portion,
The locking portion is a pair of cuts or U-shaped notches arranged in the width direction at the lower edge of the tack seal. A packaging bag according to any one of claims 1 to 3 ,
At the lower end of the lower edge seal portion, when the opening is formed by breaking the sheet material, a locking portion for locking the tack seal to the lower end of the lower edge seal portion is formed,
The locking portion is formed at the lower edge of the lower edge seal portion, and is a substantially trapezoidal cutout that becomes narrower as it approaches the upper side.
The width of the cut line is W1, the minimum width of the notch is W2, the maximum width of the notch is W3, the maximum width of the tack seal is W4, the distance from the upper edge of the lower edge seal part to the upper edge of the notch is H1, When the distance from the upper end edge of the edge seal portion to the lower end of the tack seal is H2, and the distance from the upper end of the lower edge seal portion to the lower end of the lower edge seal portion 16 is H3, W1 <W2 <W3 <W4, and H1 <H2 <H3 is satisfied.
A packaging bag characterized by that. A packaging bag according to any one of claims 1 to 5 ,
A packaging bag, characterized in that, in the middle of the cut line, a connecting portion where the cut is interrupted is provided .

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