JP2019177945A - Packaging bag, method for use of packaging bag, and method for manufacturing packaging bag - Google Patents

Abstract

To provide a packaging bag which is excellent in performances of opening, taking-out and storing after opening.SOLUTION: A packaging bag has a body part which is formed in a gusset shape from a cylindrical film and in which a packaged object is accommodated, and a handle part which is formed integrally with the body part on a top surface part of the body part. The top surface part of the body part has a pair of upper surface parts which contact a lower end edge of the handle part, and a pair of lower surface parts which are overlapped below the upper surface parts. A first slit is formed on at least any one of the pair of lower surface parts near a midship part of the top surface part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging bag, a method for using the packaging bag, and a method for manufacturing the packaging bag.

  In the conventional packaging bag, for example, articles such as toilet paper are accommodated, and a notch (perforation or the like) for opening the packaging bag is provided in a handle portion or a main body portion of the packaging bag. In Japanese Patent Laying-Open No. 2015-63316 (Patent Document 1), a perforation for opening is provided between two finger holes in the handle portion of the packaging bag. In Japanese Patent Laid-Open No. 11-001240 (Patent Document 2), a perforation for opening is formed in a T shape from the upper surface to the front surface (or rear surface) of the packaging bag.

Japanese Patent Laying-Open No. 2015-63316 JP-A-11-001240

  However, in the conventional packaging bag, the user may unnecessarily open the package from a place where no perforation is provided without knowing where the perforation is provided or how to open the packaging bag. Therefore, a strong force is required to open the packaging bag, and it is difficult for some users to open the packaging bag. In addition, since the opening location and the state after opening differ depending on the user, it may be difficult to take out the product from the opened packaging bag. In addition, even when opened along the perforation for opening, the handle part of the packaging bag and the central part of the main body part tend to be severely broken, and the remaining product is stored cleanly in the opened packaging bag as it is May be difficult to do.

  An object of the present invention is to provide a packaging bag that is excellent in unsealing property, taking out property, and storage property after unsealing.

  A first aspect of the present invention is a main body portion that is formed in a gusset shape with a tubular film and that accommodates a packaged body, and a handle portion that is provided integrally with the main body portion on the top surface portion of the main body portion. The top surface portion of the main body portion is connected to the bottom surface edge of the handle portion and the back surface portion of the upper surface portion, and is provided below the upper surface portion. A packaging bag comprising a pair of overlapping lower surface portions, wherein a first slit is formed near a central portion of the top surface portion of at least one of the lower surface portions of the pair of lower surface portions. .

  In the first aspect, since the first slit is formed near the center of the top surface portion of at least one of the pair of lower surface portions, the handle portion is pinched by the lower surface portion where the first slit is formed. When pulled in the longitudinal direction, the lower surface portion of the top surface portion is torn from the center portion of the top surface portion. Further, when a part of the torn lower surface portion is further pulled out of the main body portion, the back surface portion of the upper surface portion connected to the lower surface portion is torn along the lower end edge of the handle portion. Thereby, in a 1st aspect, a part of top | upper surface part can be opened leaving the surface part of an upper surface part.

  In addition, the main body portion tends to be broken linearly in the height direction of the handle portion (the extending direction of the tubular film or the direction in which the top surface portion and the bottom surface portion of the main body portion face each other). When a part of the pulled out top surface part (a part of the lower surface part and a part of the back surface part of the upper surface part) is further pulled down, the side surface part of the main body part is opened cleanly. Thus, in the first aspect, the packaging bag can be opened cleanly with a small force. Therefore, according to the 1st aspect, the packaging bag excellent in openability can be provided.

  Moreover, in the 1st aspect, since the side surface of a main-body part is opened cleanly as mentioned above, it is easy to take out the to-be-packaged body accommodated in the packaging bag. Therefore, according to the 1st aspect, the packaging bag excellent in the pick_out | removing property of a product can be provided.

  Furthermore, in the first aspect, the side surface of the main body is opened cleanly as described above, thereby forming a broken piece of the packaging bag (part of the torn lower surface part and part of the back surface part of the upper surface part). Part of the top surface is also clean. Therefore, after taking out a part of the package body, this broken piece is put (returned) inside the packaging bag, so that the product remaining in the packaging bag can be covered. Can be protected. Therefore, according to the 1st aspect, the packaging bag excellent in the storage property after opening can be provided.

  In the first aspect, when the packaging bag is opened, the top surface portion of the main body portion is torn only at the lower surface portion and part of the upper surface portion (the back surface portion of the upper surface portion connected to the lower surface portion), and the remaining top surface portion. The portion (the portion connecting the handle portion and the side surface portion of the main body portion or the surface portion of the upper surface portion) remains without being broken. For this reason, even after opening the packaging bag, it is possible to carry the product by holding the handle portion while the unused product is stored in the packaging bag. Therefore, according to the first aspect, it is possible to provide a packaging bag that is excellent in portability even after opening.

  Moreover, in the 1st aspect, since a packaging bag can be opened cleanly as mentioned above, the packaging bag whose appearance is not impaired after opening can be provided. Therefore, according to the first aspect, it is possible to provide a packaging bag that looks good even after opening.

  The second aspect of the present invention is a packaging bag in which the first slit extends in the thickness direction of the handle portion. In the second aspect, since the first slit extends in the thickness direction of the handle portion and is formed in the lower surface portion, when the lower surface portion is pinched and pulled in the longitudinal direction of the handle portion, the lower surface portion of the top surface portion is It becomes easy to tear from the central part of the face part. In addition, since the direction in which the lower surface portion is torn is directed toward the lower end edge side of the handle portion, when a part of the torn lower surface portion is pulled out of the main body portion, the back surface portion of the upper surface portion connected to the lower surface portion is the handle portion. It becomes easy to tear along the lower end edge. Therefore, in the second aspect, the packaging bag can be opened with less force.

  A third aspect of the present invention is a packaging bag in which the first slit is formed in any lower surface portion of the pair of lower surface portions. In the 3rd mode, since the 1st slit is formed in both lower surface parts of a pair of lower surface parts, a packaging bag can be opened from either of a pair of lower surface parts. Therefore, according to the 3rd aspect, the freedom degree of opening operation of a packaging bag can be raised.

  According to a fourth aspect of the present invention, a second slit is formed near the side edge of the handle portion of the back surface portion of the upper surface portion connected to the lower surface portion where the first slit is formed. It is a packaging bag. In the fourth aspect, in addition to the first slit formed in the lower surface portion, such a second slit is provided in the back surface portion of the upper surface portion. Therefore, when a part of the top surface part pulled out to the outside of the main body part is further pulled down, the back surface part of the upper surface part that is torn along the lower edge of the handle part is further torn along the second slit. A part of the top surface portion of the main body portion (the back surface portion of the upper surface portion) can be opened cleanly.

  In the 5th aspect of this invention, it is a packaging bag extended toward the upper end edge side of the said main-body part from the lower end edge side of the said handle part. In the fifth aspect, since the second slit extending from the lower end edge side of the handle portion toward the upper end edge side of the main body portion is provided on the back surface portion of the upper surface portion, the upper surface is torn along the lower end edge of the handle portion. The back surface portion of the portion is easily broken continuously along the second slit to the side surface portion of the main body portion. Therefore, according to the fifth aspect, a part of the top surface portion (the back surface portion of the upper surface portion) of the main body portion can be opened cleanly with less force.

  A sixth aspect of the present invention is the packaging bag, wherein the second slit further includes an extension slit extending from the top surface portion side of the main body portion toward the bottom surface portion side of the main body portion. In the sixth aspect, since such an extension slit is included in the second slit, when a part of the top surface portion pulled out to the outside of the main body portion is further pulled down, the side surface portion of the main body portion becomes the extension slit. Therefore, the side part of the main body can be opened more neatly.

  A seventh aspect of the present invention is a method for using the packaging bag, wherein a portion of the lower surface portion where the first slit is formed is broken, and the lower surface portion where the portion is broken is formed on the handle portion. It is a usage method of a packaging bag characterized by drawing out to the outside of the body part along the longitudinal direction.

  In the seventh aspect, by breaking the portion where the first slit of the lower surface portion of the top surface portion is formed, and pulling out the lower surface portion partially broken along the longitudinal direction of the handle portion to the outside of the main body portion, The lower surface portion of the top surface portion is torn from the center portion of the top surface portion, and the back surface portion of the upper surface portion connected to the lower surface portion is torn along the lower edge of the handle portion. Thereby, since a part of top | upper surface part can be opened leaving the surface part of an upper surface part, the effect similar to the packaging bag which concerns on the said 1st aspect is acquired in the 7th aspect. That is, according to the 7th aspect, the packaging bag excellent in openability can be provided.

  An eighth aspect of the present invention is a method for using a packaging bag, wherein a part of the lower surface portion is further pulled down to the bottom surface portion side of the main body portion. In the eighth aspect, since the main body portion tends to be broken linearly in the height direction of the handle portion as described above, a part of the top surface portion pulled out to the outside of the main body portion (a part of the lower surface portion and When a part of the back surface portion of the upper surface portion is further pulled down, the side surface portion of the main body portion can be opened cleanly. Therefore, in the 8th aspect, the effect similar to the packaging bag which concerns on the said 1st aspect is acquired. That is, according to the eighth aspect, it is possible to provide a packaging bag that is excellent in unsealing property and product take-out property, and has a good appearance even after unsealing.

  In the eighth aspect, when the packaging bag is opened, the top surface portion of the main body portion is torn only at the lower surface portion and a part of the upper surface portion (the back surface portion of the upper surface portion connected to the lower surface portion), and the remaining top surface portion. The portion (the portion connecting the handle portion and the side surface portion of the main body portion or the surface portion of the upper surface portion) remains without being broken. For this reason, even after opening the packaging bag, it is possible to carry the product by holding the handle portion while the unused product is stored in the packaging bag. Therefore, in the 8th aspect, the effect similar to the packaging bag which concerns on the said 1st aspect is acquired. That is, according to the 8th aspect, the packaging bag which is excellent in portability after opening can be provided.

  A ninth aspect of the present invention is a method for using a packaging bag, wherein a part of the lower surface portion is further placed inside the main body portion. In the ninth aspect, by inserting a part of the lower surface part further inside the main body part, a part of the broken main body part (a part of the lower surface part, a part of the back surface part of the upper surface part, and a side surface part) The product remaining in the packaging bag after taking out a part of the packaged body can be covered. Thereby, in the ninth aspect, since the product can be protected from dust even after opening, the same effect as the packaging bag according to the first aspect can be obtained. That is, according to the 9th aspect, the packaging bag excellent in the storage property after opening can be provided.

  According to a tenth aspect of the present invention, there is provided a main body portion that is formed in a gusset shape with a tubular film and that accommodates a packaged body, and a handle portion that is provided integrally with the main body portion on the top surface portion of the main body portion. The top surface portion of the main body portion includes a pair of upper surface portions connected to a lower end edge of the handle portion, and a pair of lower surface portions connected to the upper surface portion and overlapping below the upper surface portion. A gusset forming step of forming a gusset-like sheet by folding the tubular film into a gusset shape, and a method of manufacturing a packaging bag having at least one of the pair of lower surface portions closer to the center portion of the top surface portion And a slit forming step of forming a first slit.

  In the tenth aspect, since the first slit can be formed near the center part of at least one top surface part of the pair of lower surface parts by such a slit forming step, the packaging bag according to the first aspect and Similar effects can be obtained. That is, according to the tenth aspect, it is possible to provide a packaging bag that is excellent in opening property, product take-out property, storage property after opening, and portability after opening, and that looks good even after opening.

  In an eleventh aspect of the present invention, in the slit forming step, the back surface portion of the upper surface portion connected to the lower surface portion where the first slit is formed is closer to the side edge in the longitudinal direction of the handle portion. A method for manufacturing a packaging bag including a step of forming a second slit. In the eleventh aspect, by such a slit forming step, the second slit can be formed near the side edge of the handle portion on the back surface portion of the upper surface portion connected to the lower surface portion where the first slit is formed. Therefore, the same effect as the packaging bag according to the fourth aspect can be obtained. That is, according to the 11th aspect, the packaging bag which can open the side part of a main-body part more neatly can be provided.

  A twelfth aspect of the present invention is a method for manufacturing a packaging bag, wherein the slit forming step is performed before the gusset forming step. In the twelfth aspect, the first slit can be reliably formed in the top surface portion by the slit forming step before the gusset forming step. Also, when the second slit (slit base) is provided, the second slit (slit base) can be reliably formed on the top surface portion simultaneously with the formation of the first slit 50. Further, when the second slit (extension slit) is formed, the second slit (extension slit) can be surely formed on the second side surface simultaneously with the formation of the first slit and the second slit (slit base). it can.

  A thirteenth aspect of the present invention is a method for manufacturing a packaging bag, wherein the slit forming step is performed after the gusset forming step. In the thirteenth aspect, a dummy slit that does not contribute to the opening of the packaging bag is formed by the slit forming step after the gusset forming step, but the first slit and the first slit in the state of a cylindrical film folded into a gusset shape Two slits can be formed. Therefore, the first slit and the second slit can be formed simultaneously with the formation of the finger-hanging slit in the step of forming the finger-holding slit in the handle portion performed after the gusset forming step. Thereby, since it is not necessary to provide the process of forming only the 1st slit and the 2nd slit separately, manufacturing cost can be held down.

  According to one embodiment of the present invention, it is possible to provide a packaging bag that is excellent in unsealing property, taking out property, and storage property after unsealing.

It is a perspective view which shows the packaging bag (1st Embodiment) which concerns on embodiment of this invention. It is a top view of FIG. It is a front view of FIG. It is a right view of FIG. FIG. 5 is a developed view in which a handle portion is developed in the right side view of FIG. 4. It is an expanded view which shows the packaging bag (2nd Embodiment) which concerns on embodiment of this invention. It is an expanded view which shows the packaging bag (3rd Embodiment) which concerns on embodiment of this invention. It is a perspective view which shows the packaging bag (modified example of 1st Embodiment) which concerns on embodiment of this invention. It is a figure explaining the usage method of the packaging bag which concerns on embodiment of this invention. It is a figure explaining an example of the usage condition of the packaging bag which concerns on embodiment of this invention. It is a figure explaining an example of the usage condition of the packaging bag which concerns on embodiment of this invention. It is a figure explaining an example of the usage condition of the packaging bag which concerns on embodiment of this invention. It is a figure explaining an example of the usage condition of the packaging bag which concerns on embodiment of this invention. It is a flowchart which shows an example of the usage method of the packaging bag which concerns on embodiment of this invention. It is a flowchart which shows an example of the manufacturing method of the packaging bag which concerns on this embodiment. It is a figure which shows the process of manufacturing the packaging bag which concerns on this embodiment. It is a figure which shows an example of the semi-finished product obtained by the manufacturing process shown in FIG. It is a flowchart which shows the other example of the manufacturing method of the packaging bag which concerns on this embodiment. It is a figure which shows an example of the manufacturing process which implement | achieves the manufacturing method of the packaging bag shown in FIG. It is a figure which shows an example of the semi-finished product obtained by the manufacturing process shown in FIG. It is a perspective view which shows the packaging bag (4th Embodiment) which concerns on embodiment of this invention. It is a top view of FIG. It is a front view of FIG. It is a right view of FIG. It is a figure which shows the conventional packaging bag (comparative example 1). It is a figure which shows the conventional packaging bag (comparative example 2). It is a figure which shows the conventional packaging bag (comparative example 3). It is a figure which shows the conventional packaging bag (comparative example 4). It is a figure which shows the conventional packaging bag (comparative example 5).

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In order to facilitate understanding, the scale of each member in each drawing may be different from the actual scale. Moreover, in the description shown below, about the part which is common in each figure, the same code | symbol may be attached | subjected and description may be abbreviate | omitted.

<Packaging bag>
First, the packaging bag which concerns on embodiment of this invention is demonstrated. FIG. 1 is a perspective view showing a packaging bag according to a first embodiment of the embodiments of the present invention. 2 is a plan view of FIG. 1, FIG. 3 is a front view of FIG. 1, and FIG. 4 is a right side view of FIG. Further, FIG. 5 is a developed view in which the handle portion is developed in the right side view of FIG.

  In FIG. 1, the packaging bag 100 includes a main body 10, a handle 20, a finger hook 30, and a seal 40. The packaging bag 100 is produced from a resin film or the like using a bag making machine. The packaging bag 100 is an example of the packaging bag of the present invention. Moreover, the main-body part 10 and the handle part 20 are each examples of the main-body part and the handle part which comprise the packaging bag of this invention.

  The main body 10 constitutes a main body of the packaging bag 100 in which the packaged body T is accommodated. The main body 10 is formed of a tubular film (a tubular film TF described later) (see FIGS. 16, 17, 19, and 20). The main body 10 has a structure in which the tubular film TF is formed into a bag shape and the tubular film TF is folded into a gusset shape (FIGS. 1 to 5, 16, 17, and 19. , See FIG.

  The material of the resin film which forms the main-body part 10 is arbitrary. As such a resin film, for example, a resin film such as polyethylene (PE), PE-ethylene vinyl alcohol copolymer (EVOH) -PE laminate (PE / EVOH / PE), and the like can be used. Moreover, the thickness of the resin film is arbitrary. For example, when PE or PE / EVOH / PE is used as the resin film, the thickness of the resin film can be 10 to 70 μm, preferably 15 to 60 μm, and more preferably 20 to 50 μm.

  The main body 10 contains 12 roll-shaped toilet papers as an example of the packaged body T (see FIG. 1). In addition, the form of a to-be-packaged body is not limited to roll shape, You may accommodate in other forms, such as laminated form. Moreover, the package body accommodated in the main body 10 is not limited to toilet paper, and can accommodate articles such as tissue paper, kitchen paper, baby or nursing paper diapers, and sanitary napkins. .

  Further, the number of articles accommodated in the main body unit 10 is not limited, and may be one or plural as shown in FIG. In the example shown in FIG. 1, a total of 12 toilet papers (packaged bodies T) are formed in a state where four roll-shaped toilet papers (packaged bodies T) are arranged in three stages and stacked in three stages. It is accommodated in the main body 10. However, the arrangement of the packages to be accommodated in the main body 10 is not limited to this arrangement. For example, in the state where twelve toilet papers (packages T) are arranged in a row, May be accommodated.

  The handle part 20 is provided in the top | upper surface part 11 of the main-body part 10 as shown in FIGS. 1-4, and comprises the part which grasps the packaging bag 100 with a finger. The handle portion 20 can be formed of a resin film or the like, similar to the main body portion 10. The handle part 20 is formed on the top surface part 11 of the main body part 10 by heat sealing (heat sealing). The position where the handle portion 20 is provided is not limited to the top surface portion 11 of the main body portion 10 and may be the side surface of the main body portion 10. For heat sealing (heat sealing), for example, a technique (stamp method) in which the resin film folded in the above-described gusset shape is embossed with a hot plate for handle forming can be used.

  As shown in FIGS. 1 to 4, the handle portion 20 is provided integrally with the main body portion 10 on a top surface portion 11 to be described later of the main body portion 10 and constitutes a portion for gripping the packaging bag 100 with fingers. The handle portion 20 can be formed of a resin film or the like, similar to the main body portion 10. It should be noted that the handle portion 20 is provided with an air hole that communicates between the main body portion 10 and the outside of the packaging bag 100 so that the main body portion 10 to which the handle portion 20 is attached is not ruptured during manufacture or distribution of the packaging bag 100. (Not shown) may be provided.

  The handle portion 20 is formed on the top surface portion 11 of the main body portion 10 by a seal portion 40 formed by heat sealing (heat sealing). The position where the handle portion 20 is provided is not limited to the top surface portion of the main body portion 10 and may be the side surface of the main body portion 10. For heat sealing (heat sealing), for example, a technique (stamp method) in which the resin film folded in the above-described gusset shape is embossed with a hot plate for handle forming can be used.

  The handle portion 20 is provided with a finger hook portion 30 for hooking fingers when the handle portion 20 is gripped. The finger hook portion 30 is formed at the center of the flat portion 25 of the handle portion 20. The finger hook 30 is formed by an elliptical slit. The form of the slit is arbitrary, and for example, it is formed with a perforation, and the finger hook portion can be formed by breaking the perforation.

  The shape of the finger hook portion 30 is not limited to an elliptical shape, and may be a linear shape, a curved shape, a circular shape, an elliptical shape, a rectangular shape, or a similar shape. Moreover, although the finger hook part 30 is formed with one slit, the number of slits is not limited. Therefore, the finger hook portion 30 may be formed by two or more slits. Such a finger hook can be formed by, for example, two slits arranged at a predetermined interval in the longitudinal direction of the handle portion (X direction in FIG. 1) (see FIG. 8).

  The finger hook portion 30 is disposed on the handle portion 20 surrounded by a heat seal (not shown). That is, the finger hook portion 30 is disposed inside the heat seal and separated from the heat seal. Further, the handle portion 20 may be provided with a reinforcing film (not shown). The mode of attaching the reinforcing film to the handle part 20 is arbitrary, and can be attached to the handle part 20 by heat fusion (heat sealing) in the same manner as the formation of the handle part 20.

  This reinforcing film can be formed of a strip-shaped resin film. The material of the reinforcing film is arbitrary, and may be the same as or different from the material of the resin film constituting the handle portion 20. Examples of such resin films include polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), and PE-ethylene vinyl alcohol copolymer (EVOH) -PE laminate (PE / EVOH / PE). Etc. can be used. By providing such a reinforcing film, it is possible to reinforce the portion where the finger hook portion 30 of the handle portion 20 is provided.

  Moreover, the thickness dimension of a reinforcement film is arbitrary. For example, the thickness of the reinforcing film can be 20 μm or more, preferably 30 μm to 150 μm, more preferably 50 μm to 130 μm. By making the thickness dimension of the reinforcing film in such a range, the handle portion 20 can be prevented from extending or breaking. Further, the reinforcing film can be securely bonded to the handle portion 20 by the above-described heat welding or the like.

  In the packaging bag 100 according to the first embodiment, as shown in FIGS. 1 to 4, the main body portion 10 includes a top surface portion 11, a bottom surface portion 12, a pair of first side surface portions 13, and a pair of second side surface portions 14. Have The top surface portion 11 is formed on the upper side of the main body portion 10. The bottom surface portion 12 is formed on the lower side of the main body portion 10 and faces the top surface portion 11 in the Z direction. A pair of 1st side part 13 is arrange | positioned between the top | upper surface part 11 and the bottom face part 12, and opposes a Y direction. A pair of 2nd side part 14 is arrange | positioned between the top | upper surface part 11 and the bottom face part 12, and opposes a X direction.

  The top surface portion 11 of the main body portion 10 is composed of a pair of upper surface portions 11a and a pair of lower surface portions 11b. As shown in FIGS. 1 to 5, the pair of upper surface portions 11a that constitute a part of the top surface portion 11 includes a front surface portion SP and a back surface portion BP that are folded back by the first folding portion GF1. And surface part SP of the upper surface part 11a is connected to the lower end edge 22 of the handle part 20 via the connection part 11c, and is further connected to the upper end edge 13a (upper end edge of a main-body part) of the 1st side part 13. Yes.

Moreover, as shown in FIGS. 1-5, a pair of lower surface part 11b which comprises some top surface parts 11 is connected to the back surface part BP of the upper surface part 11a, and has overlapped under the upper surface part 11a. Specifically, the pair of lower surface portions 11b is connected to the lower end edge 22 of the handle portion 20 and the back surface portion BP of the upper surface portion 11a via the second folding portion GF2, and is connected to the upper surface via the third folding portion GF3. It is connected to the back surface part BP of the part 11a and further connected to the upper end edge 14a of the second side surface part 14 (the upper end edge of the main body part).
In the development view of FIG. 5, the second folding part GF2 is indicated by a one-dot chain line.

  In 1st Embodiment, as shown in FIGS. 1-5, the 1st slit 50 is formed in the lower surface part 11b by the side edge 24 of the handle part 20 among a pair of lower surface parts 11b. Further, the first slit 50 is provided near the center of the top surface portion 11. Specifically, the first slit 50 is provided in the vicinity of the second folding part GF2 and in the vicinity of the third folding part GF3 in the lower surface part 11b.

  The form of the 1st slit 50 is arbitrary, for example, can form it by notches, such as perforation. In the present embodiment, the first slit 50 is formed by a perforation, and a notch is formed by breaking the perforation. In the first embodiment, as shown in FIGS. 1 to 5, the perforation that forms the first slit 50 is indicated by a broken line.

  In the first embodiment, the first slit 50 extends in the thickness direction of the handle portion 20 (the direction in which the two flat portions 25 face each other when the handle portion 20 is raised, hereinafter referred to as the Y direction). It is formed on the lower surface portion 11b. Specifically, the first slit 50 is substantially the same as the longitudinal direction of the handle portion 20 (the direction in which the side edge 23 and the side edge 24 face each other when the handle 20 is erected, hereinafter referred to as the X direction). It is provided to extend orthogonally.

  The shape of the 1st slit 50 is not specifically limited, It can be made into shapes, such as a straight line and a curve. In the present embodiment, it is formed by linear perforations extending substantially parallel to the upper end edges 14 a of the pair of second side surface portions 14.

  In the first embodiment, the first slit 50 is formed only on the lower surface portion 11b on the side edge 24 side of the handle portion 20 of the pair of lower surface portions 11b. You may form in any lower surface part 11b. That is, the first slit 50 may not be formed on the lower surface portion 11b on the side edge 24 side of the handle portion 20, but may be provided only on the lower surface portion 11b on the side edge 23 side of the handle portion 20. Further, the first slit 50 may be formed in the lower surface portion 11 b on the side edge 23 side of the handle portion 20 and further provided in the lower surface portion 11 b on the side edge 24 side of the handle portion 20.

  In the first embodiment, the second slit 60 is formed near the side edge 24 of the handle portion 20 of the back surface portion BP of the upper surface portion 11a connected to the lower surface portion 11b in which the first slit 50 is formed. ing. Specifically, the second slit 60 is provided as a slit base 61 in the vicinity of the lower edge 22 near the side edge 24 of the handle 20 in the back surface BP. The second slit 60 (slit base 61) may be separated from the lower end edge 22 of the handle part 20, but is preferably connected to the lower end edge 22 of the handle part 20.

  The form of the 2nd slit 60 is arbitrary, For example, it can form by notches, such as a perforation. In the present embodiment, the second slit 60 is formed by the same perforation as the first slit 50. In the first embodiment, as shown in FIGS. 1 to 5, the perforation that forms the second slit 60 is indicated by a broken line in the same manner as the first slit 50.

  The shape of the second slit 60 is not particularly limited, and may be a shape such as a straight line, a diagonal line, a curved line, a curved line, or a similar shape. In the present embodiment, it is formed by linear perforations extending substantially parallel to the upper end edges 14 a of the pair of second side surface portions 14.

  In the first embodiment, the second slit 60 extends from the lower end edge 22 side of the handle portion 20 toward the upper end edge side of the main body portion 10. Specifically, as shown in FIGS. 1 to 5, the second slit 60 is formed along the first folding part GF <b> 1 from the lower end edge 22 side of the handle part 20 to the pair of first side parts of the main body part 10. 13 extends toward the upper edge 13a.

  In the first embodiment, the second slit 60 further includes an extension slit 62 in addition to the slit base 61 described above. The extension slit 62 extends from the top surface 11 side of the main body 10 toward the bottom surface 12 of the main body 10. Specifically, as shown in FIGS. 1 to 5, the second slit 60 includes a slit base 61 and an extension slit 62 that is continuous with the extension slit 62. The slit base 61 of the second slit 60 is formed in the back surface portion BP of the upper surface portion 11a and the lower surface portion 11b in which the first slit 50 is provided. Further, the extension slit 62 of the second slit 60 is formed in the second side surface portion 14 continuously with the slit base portion 61.

  FIG. 6 is a development view showing the packaging bag according to the second embodiment of the embodiments of the present invention. In the second embodiment shown in FIG. 6, the second slit 60 has only the slit base 61. That is, in the packaging bag 100 of 2nd Embodiment, compared with 1st Embodiment shown in FIG. 5, the extension slit 62 is not provided among the 2nd slits 60. FIG.

  Moreover, FIG. 7 is an expanded view which shows the packaging bag which concerns on 3rd Embodiment among embodiment of this invention. In the third embodiment shown in FIG. 7, only the first slit 50 is provided. That is, in the packaging bag 100 of 3rd Embodiment, the 2nd slit 60 is not provided compared with 1st Embodiment shown in FIG.

  Further, FIG. 8 is a perspective view showing a modification of the first embodiment of the embodiments of the present invention. In the modification of the first embodiment shown in FIG. 8, two finger hook portions 30 are formed on the handle portion 20. In the first embodiment, one finger hook portion 30 is formed on the handle portion 20, whereas in the modified example of the first embodiment, a predetermined interval in the longitudinal direction (X direction) of the handle portion. Two finger hooks 30 and 30 are arranged with a gap.

  FIGS. 9-13 is a figure explaining an example of the usage condition of the packaging bag based on embodiment of this invention. Here, the effect by this embodiment is demonstrated using FIGS. 9-13. Regarding the packaging bag 100 according to the above-described embodiment, first, as shown in FIGS. 9 and 10, the lower surface portion 11 b in which the first slit 50 is formed is exposed to the outside of the main body portion 10, and the first slit 50 is formed. After opening, the opened lower surface portion 11 b is pulled in the longitudinal direction (X direction) of the handle portion 20. If it does so, the lower surface part 11b of the top surface part 11 will be torn from the center part vicinity of the top surface part 11. FIG.

  When the lower surface portion 11b is opened and pulled in the longitudinal direction (X direction) of the handle portion 20, the first slit 50 may be directly broken by the finger P and the opening portion of the lower surface portion 11b may be pinched and pulled. Further, before breaking the first slit 50, the lower surface portion 11b may be pinched with the fingers P and pulled in the longitudinal direction (X direction) of the handle portion 20.

  Further, as shown in FIG. 10, a part of the torn lower surface portion 11 b is further pulled out to the outside of the main body portion 10. Then, the back surface portion BP of the upper surface portion 11 a connected to the lower surface portion 11 b is torn along the lower end edge 22 of the handle portion 20. Thereby, in this embodiment, a part of top surface part 11 is opened, leaving surface part SP of the upper surface part 11a.

  The main body 10 tends to be broken linearly in the height direction of the handle portion 20 (the direction in which the upper end edge 21 and the lower end edge 22 face each other when the handle portion 20 is raised, hereinafter referred to as the Z direction). is there. This is because the direction (Z direction) in which the top surface portion 11 and the bottom surface portion 12 of the main body portion 10 face each other is the extending direction of the tubular film TF.

  Therefore, as shown in FIG. 11, a part of the top surface part 11 (a part of the lower surface part 11b and a part of the back surface part BP of the upper surface part 11a) drawn to the outside of the main body part 10 is further pulled down. Then, a broken fragment FG (a fragment formed by a part of the torn lower surface part 11b, a part of the back surface part BP of the upper surface part 11a, and a part of the second side surface part 14) extending from the second side surface part 14 is formed. Then, the second side surface portion 14 of the main body portion 10 is unpacked cleanly. As a result, a substantially rectangular opening OP is formed in a part of the second side surface portion 14 from the inside of the top surface portion 11 of the main body portion 10 as shown in FIG.

  In this embodiment, the packaging bag can be opened cleanly with such a small force. Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-8 is excellent in unsealability.

  Further, in the packaging bag 100 of the present embodiment, as described above, the top surface portion 11 and the second side surface portion 14 of the main body portion 10 are partly opened to form the opening OP. Therefore, as shown in FIG. 12, the packaged body T accommodated in the packaging bag 100 can be taken out from the opening OP, and the packaged body T contained in the packaging bag 100 can be easily taken out. Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-8 is excellent in the pick_out | removing property of a product.

  Moreover, in the packaging bag 100 of this embodiment, the broken piece FG of the packaging bag 100 is also opened by partly opening the part of the top surface part 11 and the part of the second side part 14 of the main body part 10 as described above. It becomes a beautiful shape. Therefore, as shown in FIG. 13, after a part of the package T is taken out from the packaging bag 100, the broken piece FG is put into the packaging bag 100 (returned). Thereby, since the to-be-packaged body T remaining in the packaging bag 100 can be covered with the broken piece FG, the to-be-packaged body T can be protected from dust even after opening. Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-8 is excellent in the storage property after opening.

  In the packaging bag 100 of the present embodiment, when the packaging bag 100 is opened, the top surface portion 11 of the main body portion 10 is composed of the lower surface portion 11b and a part of the upper surface portion 11a (the back surface portion of the upper surface portion 11a connected to the lower surface portion 11b). Only the article) was torn, and the remaining portion of the top surface portion 11 (the portion connecting the handle portion 20 and the pair of first side surface portions 13 of the main body portion 10 or the surface portion SB of the upper surface portion 11a) remained without being torn. Will remain. Therefore, even after the packaging bag 100 is opened, the handle portion 20 can be held and carried while the unused packaged body T is stored in the packaging bag 100. Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-8 is excellent in portability after opening.

  Moreover, in this embodiment, since the packaging bag 100 can be opened cleanly as described above, the appearance of the packaging bag 100 is not impaired even after opening (see FIGS. 10 to 13). Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-8 is good-looking after opening.

  In the present embodiment, the first slit 50 is formed in the lower surface portion 11b so as to extend in the thickness direction (Z direction) of the handle portion 20 as described above. Therefore, as shown in FIGS. 9 and 10, when the lower surface portion 11 b is pinched with fingers P and pulled in the longitudinal direction (X direction) of the handle portion 20, the lower surface portion 11 b of the top surface portion 11 becomes the center portion of the top surface portion 11. It is easy to tear from the side.

  In the present embodiment, the direction in which the lower surface portion 11 b is broken in the first slit 50 is directed toward the lower end edge 22 of the handle portion 20. Therefore, as shown in FIGS. 10 and 11, when a part of the torn lower surface portion 11 b is pulled out of the main body portion 10, the back surface portion BP of the upper surface portion 11 a connected to the lower surface portion 11 b is the handle portion 20. It is easy to tear along the lower end edge 22. Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-8 can be opened with less force.

  Moreover, in this embodiment, when the 1st slit 50 is formed in both the lower surface parts 11b of a pair of lower surface part 11b, the packaging bag 100 can be opened from both of a pair of lower surface parts 11b. Therefore, if it does in this way, the freedom degree of opening operation | movement of the packaging bag 100 can be raised.

  Moreover, in 1st Embodiment, in addition to the 1st slit 50 formed in the lower surface part 11b, the handle part 20 of the back surface part BP of the upper surface part 11a connected with the lower surface part 11b in which the 1st slit 50 was formed. A second slit is formed near the side edge 24 (see FIGS. 1 to 6 and FIG. 8). As a result, when a part of the top surface portion 11 pulled out to the outside of the main body portion 10 is further pulled down, the back surface portion BP of the top surface portion 11a that is torn along the lower end edge 22 of the handle portion 20 is further Break along 2 slits 60. Therefore, the packaging bag 100 of this embodiment shown in FIGS. 1-6 and 8 can open a part of the top | upper surface part 11 of the main-body part 10 neatly.

  Moreover, in this embodiment, the 2nd slit 60 (slit base 61) extended toward the upper end edge side (upper end edge 13a of a pair of 1st side part 13) of the main-body part 10 from the lower end edge 22 side of the handle part 20 is provided. It is provided on the back surface part BP of the upper surface part 11a (see FIGS. 1 to 6 and FIG. 8). Therefore, the back surface portion BP of the upper surface portion 11a that is torn along the lower end edge 22 of the handle portion 20 is easily broken continuously to the first side surface portion 13 of the main body portion 10 along the second slit 60 (slit base portion 61). Become. Therefore, the packaging bag 100 of this embodiment shown in FIGS. 1-6 and FIG. 8 can open a part of the top | upper surface part 11 of the main-body part 10 more neatly with less force.

  In the first embodiment, the second slit 60 further includes an extension slit 62 extending from the top surface portion 11 side of the main body portion 10 toward the bottom surface portion 12 side of the main body portion (see FIGS. 1 to 5 and 8). ). Thereby, when a part of the top surface part 11 drawn out to the outside of the main body part 10 is further pulled down, the second side surface part 14 of the main body part 10 is broken along the extension slit 62. Therefore, the packaging bag 100 of 1st Embodiment shown in FIGS. 1-6, FIG. 8 can open the 2nd side part 14 of the main-body part 10 more neatly.

  The first embodiment shown in FIGS. 1 to 5 and the modified example of the first embodiment shown in FIG. 8 differ in the number of finger hook portions 30 formed on the handle portion 20, but the handle portion 20. Regardless of whether the number of finger hooks 30 is one or two, both have the same durability. Therefore, even when the handle portion is made easy to hold by using only one finger hook portion, excellent openability, take-out property, and storage property can be exhibited without reducing the durability. .

<How to use packaging bags>
Next, the usage method of the packaging bag which concerns on embodiment of this invention is demonstrated. FIG. 14 is a flowchart showing an example of a method for using the packaging bag according to the embodiment of the present invention. In the method of using the packaging bag according to the embodiment, the above-described packaging bag 100 can be used. Here, the usage method of the packaging bag using the above-mentioned packaging bag 100 is demonstrated as a usage method of the packaging bag which concerns on this embodiment.

  In the method of using the packaging bag of the present embodiment, first, as shown in FIG. 9, the portion of the lower surface portion 11b of the top surface portion 11 where the first slit 50 is formed is broken (step ST1). Next, as shown in FIG. 10, a part of the lower surface portion 11b (the lower surface portion 11b partially broken) is pulled out of the main body portion 10 along the longitudinal direction (X direction) of the handle portion 20 (step ST2). Then, the lower surface portion 11b of the top surface portion 11 is torn from the central portion of the top surface portion 11 (the portion where the first slit 50 of the lower surface portion 11b is formed), and further the back surface portion BP of the upper surface portion 11a connected to the lower surface portion 11b. Is torn along the lower edge 22 of the handle portion 20 (see FIG. 10).

  Thereby, a part of top surface part 11 can be opened leaving the surface part SP of the upper surface part 11a. Thus, according to the usage method of the packaging bag of this embodiment, the effect similar to said packaging bag 100 is acquired. That is, according to the usage method of the packaging bag of this embodiment, the packaging bag excellent in openability is obtained.

  Moreover, in the usage method of the packaging bag which concerns on this embodiment, a part of pinched lower surface part 11b is further pulled down to the bottom face part 12 side of the main-body part 10 (step ST3). As described above, in the structure such as the packaging bag 100, the main body portion 10 tends to be broken linearly in the height direction (Z direction) of the handle portion 20. Therefore, when part of the top surface part 11 (part of the lower surface part 11b and part of the back surface part BP of the upper surface part 11a) pulled out to the outside of the main body part 10 is pulled down in step ST3, the main body part 10 The 2nd side part 14 is torn.

  Thereby, the 2nd side part 14 of the main-body part 10 is unseal | opened neatly, and the opening opening OP is neatly formed in the main-body part 10 (refer FIG. 11). At the same time, a broken fragment FG extending from the second side surface part 14 (a fragment formed by a part of the torn lower surface part 11b, a part of the back surface part BP of the upper surface part 11a, and a part of the second side surface part 14) is formed. The The shape of the broken piece FG corresponds to the shape of the opening OP formed in the main body 10.

  Therefore, when taking out the package body T (roll toilet paper) from the main body 10 in step ST4, the package body T is easily taken out (see FIG. 12). Moreover, the broken piece FG extended from the 2nd side part 14 also becomes a beautiful shape. Therefore, in the usage method of the packaging bag of this embodiment, the same effect as said packaging bag 100 is acquired. That is, according to the method for using the packaging bag of the present embodiment, a packaging bag having excellent unsealing properties and product take-out properties and having a good appearance even after unsealing can be obtained.

  Moreover, in the usage method of the packaging bag of this embodiment, when the packaging bag 100 is opened, the top surface portion 11 of the main body portion 10 has a lower surface portion 11b and a part of the upper surface portion 11a (the back surface of the upper surface portion 11a connected to the lower surface portion 11b). Only the portion BP) is torn, and the remaining portion of the top surface portion 11 (the portion connecting the handle portion 20 and the pair of first side surface portions 13 of the main body portion 10 or the surface portion SP of the upper surface portion 11a) remains without being torn. (See FIGS. 11 and 12).

  Thereby, even after the packaging bag 100 is opened, the handle 20 can be held and carried while the unused product (packaged body T) is stored in the packaging bag 100. Therefore, in the usage method of the packaging bag of this embodiment, the same effect as said packaging bag 100 is acquired also from a viewpoint of carrying a packaging bag after opening. That is, according to the usage method of the packaging bag of this embodiment, the packaging bag which is excellent in portability after opening can be obtained.

  Furthermore, in the usage method of the packaging bag which concerns on this embodiment, the broken piece FG extended from the 2nd side part 14 is further put inside the main-body part 10 (step ST5). That is, the broken piece FG formed in the 2nd side part 14 after opening of the packaging bag 100 is accommodated in the inside of the packaging bag 100 from the opening opening OP.

  In the usage method of the packaging bag of this embodiment, after the broken piece FG formed after opening of the packaging bag 100 is put inside the main body part 10, after a part of the packaging body T is taken out by the broken piece FG. The remaining packaged body T accommodated in the packaging bag 100 can be covered. Thereby, in the usage method of the packaging bag of this embodiment, the packaging bag 100 can protect the to-be-packaged body T from dust even after opening using the broken piece FG formed after opening. Therefore, in the usage method of the packaging bag of this embodiment, the same effect as said packaging bag 100 is acquired also from a viewpoint of storing a product after opening a packaging bag. That is, according to the usage method of the packaging bag of this embodiment, the packaging bag excellent in the storage property after opening can be provided.

<Method for manufacturing packaging bag>
Next, the manufacturing method of the packaging bag which concerns on embodiment of this invention is demonstrated. FIG. 15 is a flowchart illustrating an example of a method for manufacturing the packaging bag (first embodiment) according to the present embodiment. FIG. 16 is a diagram illustrating a process of manufacturing the packaging bag (first embodiment) in the packaging bag manufacturing method according to the present embodiment. FIG. 17 is a diagram showing an example of a semi-finished product obtained in the manufacturing process shown in FIG. In FIG. 17, portions that can be the first folding portion GF1 and the second folding portion GF2 are indicated by alternate long and short dash lines.

  The manufacturing method of the packaging bag which concerns on this embodiment is a manufacturing method of the packaging bag 100 which concerns on the above-mentioned 1st Embodiment, and is an example of the manufacturing method of the packaging bag which concerns on this invention. As shown in FIG. 15, the manufacturing method of the packaging bag which concerns on this embodiment is a raw film carrying out process (step ST11), a cylindrical film formation process (step ST12), a slit formation process (step ST13), and a gusset formation process. (Step ST14), a sealing step (Step ST15), and a gusset sheet winding step (Step ST16).

  In the raw film carry-out process (step ST11), as shown in FIG. 16, the raw film RF that is the material of the packaging bag 100 is carried out into the manufacturing process 200 of the packaging bag 100. Specifically, the unloading unit 110 unloads the original film RF in the conveying direction MD from the unloading roll 111 wound with the original film RF.

  In the tubular film forming step (step ST12), as shown in FIG. 16, the unloaded raw film RF is formed into a tubular shape to form a tubular film TF. Specifically, in the cylindrical film forming unit 120, the original film RF is folded in half in the direction (width direction) substantially orthogonal to the conveyance direction MD, and both ends of the original film RF are bonded together by heat sealing (side Perform seal SS).

In the slit forming step (step ST13), the first slit 50 is formed near the central portion of the top surface portion 11 of at least one of the pair of lower surface portions 11b in the packaging bag 100.
Specifically, as shown in FIG. 16, slits are formed in the tubular film TF by the slit forming unit 130. The slits formed by the slit forming part 130 constitute the first slit 50 and the second slit 60 in the packaging bag 100. In addition, in the slit formation part 130, only the 1st slit 50 can be formed and the 1st slit 50 and the 2nd slit 60 can also be formed simultaneously.

  In the gusset forming step (step ST14), the tubular film TF is folded into a gusset shape to form a gusset-like sheet (gusset sheet) GS. Specifically, the tubular film TF in which the slit is formed is folded in a gusset shape by the gusset forming portion 140 from the both end edges in the width direction of the tubular film TF through the folding plate 141. In the formed gusset sheet GS, a pair of first folding parts GF1 are formed at both ends in the width direction, and a pair of second folding parts GF2 are formed inside.

  In the sealing step (step ST15), as shown in FIG. 16, the gusset sheet GS folded in a gusset shape is sealed by heat sealing. Specifically, in the slit forming portion 130, a seal portion 40 that separates the main body portion 10 and the handle portion 20 of the packaging bag 100 is formed on the gusset sheet GS.

  In this sealing step (step ST15), the slit for the finger hook 30 can be formed together with the formation of the seal 40. In the sealing step, when a reinforcing film (not shown) is provided, after the reinforcing film is sealed to the handle 20 in a state where the reinforcing film is applied to the handle 20, It is preferable to form a slit.

In the gusset sheet winding step (step ST <b> 16), the gusset sheet GS in which the seal portion 40 and the slit for the finger hook portion 30 are formed is wound around the winding roll 161 by the winding portion 160.
In addition, the packaging bag 100 is obtained by cut | disconnecting the gusset sheet | seat GS wound by the winding roll 161 at predetermined intervals.

  In addition, the manufacturing method of the packaging bag which concerns on this embodiment is as mentioned above, a raw film unloading process, a cylindrical film formation process, a slit formation process, a gusset formation process, a sealing process, and a gusset sheet winding process (step) The steps ST11 to ST16) are not limited to being performed in a series of steps, and each step may be performed individually. For example, when the gusset forming process (step ST14) is completed, the process proceeds to the gusset sheet winding process (step ST16), winds up the gusset sheet GS and temporarily stores it, and then proceeds to the sealing process (step ST15). The seal part 40 can be formed in GS.

  In the manufacturing method of the packaging bag according to the present embodiment, the first slit 50 is formed near the central portion of the top surface portion 11 of at least one of the pair of lower surface portions 10b in the packaging bag 100 by the above-described slit forming step (step ST13). Can be formed. Specifically, as shown in FIGS. 16 and 17, the first slit 50 is provided in a portion near the center of the top surface portion 11 in any of the pair of lower surface portions 10 b in a semi-finished state of the packaging bag 100. Can be formed.

  Therefore, according to the manufacturing method of the packaging bag which concerns on this embodiment, the effect similar to the above-mentioned packaging bag 100 is acquired. That is, according to the method for manufacturing a packaging bag according to the present embodiment, a packaging bag that is excellent in unsealing property, product take-out property, storage property after unsealing, portability after unsealing, and good appearance after unsealing can be obtained. .

  In the slit forming step (step ST13), the side edge 23 in the longitudinal direction (X direction) of the handle portion 20 of the back surface portion BP of the upper surface portion 11a connected to the lower surface portion 11b where the first slit 50 is formed. , 24 is preferably included in the second slit 60 forming step.

  In the packaging bag manufacturing method according to the present embodiment, the handle portion of the back surface portion BP of the upper surface portion 11a connected to the lower surface portion 11b where the first slit 50 is formed by such a slit forming step (step ST13). The second slit 60 can be formed near the side edge 23 and / or the side edge 24 of the twenty. Specifically, as shown in FIGS. 16 and 17, in the state of a semi-finished product of the packaging bag 100, a part of the second side surface portion 14 from the back surface portion BP of the top surface portion 11 a of the top surface portion 11 of the main body portion 10 and The 2nd slit 60 can be formed in the part which becomes.

  Therefore, according to the manufacturing method of the packaging bag which concerns on this embodiment, the effect similar to the above-mentioned packaging bag 100 is acquired. That is, according to the manufacturing method of the packaging bag which concerns on this embodiment, the packaging bag 100 which can be opened neatly from the top | upper surface part 11 of the main-body part 10 to the 2nd side part 14 is obtained.

  In the packaging bag manufacturing method described above, the slit forming step (step ST13) is performed before the gusset forming step (step ST14) (see FIGS. 15 and 16). In the manufacturing method of the present embodiment, the first slit can be reliably formed in the top surface portion by the slit forming step (step ST13) before the gusset forming step (step ST14). Further, when the slit base 61 is provided in the second slit 60, the slit base 61 can be reliably formed on the top surface portion 11 simultaneously with the formation of the first slit 50. Furthermore, even when the extension slit 62 is formed in the second slit 60, the extension slit 62 can be reliably formed in the second side surface portion 14 simultaneously with the formation of the first slit 50 and the slit base 61.

  On the other hand, in another example of the manufacturing method of the packaging bag of this embodiment, as shown in FIGS. 18-19, you may perform a slit formation process (step ST24) after a gusset formation process (step ST23). Specifically, the slit forming step (step ST24) as shown in FIG. 15 is not performed between the tubular film forming step (step ST22) and the gusset forming step (step ST23), but the gusset forming step (step ST23). ) And the sealing step (step ST25). In addition, it is preferable to perform a slit formation process (step ST24) simultaneously with the process of forming the slit for the finger hook parts 30 in a sealing process (step ST25).

  In the manufacturing method of the packaging bag of this embodiment, the 1st slit 50 is formed by providing the slit formation process (step ST24) after a gusset formation process (step ST23), or a 1st slit and a 2nd slit are simultaneous. It is formed. At this time, the first slit 50 is formed in a state in which the tubular film TF is folded by the gusset forming step (step ST23), or the first slit 50 and the second slit 60 are formed at the same time. It will be formed together.

  Such dummy slits are, for example, the first dummy slit 70 and the second dummy slit 80 (in the semi-finished product of the packaging bag 100 shown in 20 or the packaging bag 100 shown in FIGS. 21 to 24 (fourth embodiment)). A dummy slit base 81 and an extended dummy slit 82) are formed. The first dummy slit 70 and the second dummy slit 80 correspond to the first slit 50 and the second slit 60 and are formed by the same perforation as the first slit 50. In the fourth embodiment, as shown in FIGS. 20 to 23, perforations that form the first dummy slit 70 and the second dummy slit 80 are indicated by broken lines in the same manner as the first slit 50.

  From the viewpoint of not contributing to the opening of the packaging bag 100, the dummy slit is preferably as small as possible. On the other hand, from the viewpoint of effectively using such a dummy slit, the packaging bag may be opened from the portion where the dummy slit is formed. That is, if the 1st slit 50 and the 2nd slit 60 in this embodiment are used as a slit for opening of the packaging bag 100, and also the 1st dummy slit 70 and the 2nd dummy slit 80 are used, the opening operation of the packaging bag will be performed. The degree of freedom can be further increased.

  Further, the slit forming step (step ST24) performed after such a gusset forming step (step ST23) is simultaneously with the step of forming the finger-hanging slit in the handle portion in the sealing step (step ST25) as described above. It can be carried out. Further, as shown in FIG. 20, the region for forming the slits necessary for forming the first slit 50 and the second slit 60 is a packaging bag in an example of the packaging bag manufacturing method of the present embodiment shown in FIG. Compared to 100 semi-finished products, it can be made narrower. Therefore, according to another example of the manufacturing method of the packaging bag shown in FIG.

  Further, as shown in FIG. 20, the number of slits necessary for forming the first slit 50 and the second slit 60 can be reduced. Therefore, according to another example of the manufacturing method of the packaging bag shown in FIG. 18, the operation | work which forms a 1st slit and a 2nd slit is easy. Thus, according to the other example of the manufacturing method of the packaging bag shown in FIG. 18, manufacturing cost can be suppressed.

  Hereinafter, the present invention will be specifically described with reference to examples. Examples and comparative examples were evaluated by the following tests.

[durability]
A packaging bag 100 containing 12 roll-shaped toilet paper (“Elière toilet tissue 60m single (147 g / roll)” manufactured by Daio Paper Co., Ltd.) as a packaged body T was prepared. Durability was evaluated when the user freely held his / her finger P on the finger hooking portion 30 of the packaging bag 100 to hold the handle portion 20 and moved 10 reciprocating movements like a pendulum in the range of 180 °. The test was conducted five times for each example and comparative example and evaluated according to the following criteria.
○: Damage could not be confirmed even once in 5 times (good)
X: Damage was confirmed at least once out of 5 times (defect)

[Openability (tensile strength)]
The ease of opening (opening property) when opening the packaging bag 100 was evaluated. Openability was evaluated from the tensile strength (kgf) measured as follows. In the measurement of the tensile strength, first, a push-pull gauge (“DSP-20” manufactured by IMADA) was attached to a tensile tester (“MX-500N” manufactured by IMADA). Further, a clip (manufactured by IMADA, film chuck (FC21)) was attached to the push-pull gauge and the chuck attachment plate. The width between the clip attached to the push-pull gauge and the chuck mounting plate is fixed to about 30 mm. Clips were attached to the top and bottom of the test piece so that a slit (perforation) was placed at the center between the clips. Then, the strength (peak) was measured by pulling a clip in the stretching direction of the film until an opening was formed where one toilet roll could be taken out at a speed of 100 mm / min. The tensile strength was measured three times, and the average value (kgf) was calculated as the tensile strength. In addition, as in Comparative Examples 3 and 4, those that are opened by pulling in two directions, the vertical and horizontal directions, require a force for opening in a direction perpendicular to the stretching direction rather than the stretching direction of the film. The tensile strength when opening the perforation in the direction to be measured was measured.

[Openability]
The ease of opening (opening property) when opening the packaging bag 100 was evaluated. The unsealing property was evaluated by the following criteria from the average value obtained by scoring the results of the test conducted by five users for each example and comparative example. When the average value was 4.0 or more, it was evaluated as good.
5 points: Easy to open 4 points: Easy to open 3 points: Neither 2 points: Difficult to open 1 point: Very difficult to open

[Removability]
After opening the packaging bag 100, the ease of taking out (takeout property) when the roll T to be packaged in the packaging bag 100 was taken out was evaluated. The extractability was evaluated by the following criteria based on the average value obtained by scoring the results of the test conducted by five users for each example and comparative example. When the average value was 4.0 or more, it was evaluated as good.
5 points: Very easy to take out 4 points: Easy to take out 3 points: Neither can be said 2 points: Difficult to take out 1 point: Very difficult to take out

[Storage]
Whether or not the packaged body T remaining in the packaging bag 100 can be covered (or wrapped) with broken pieces in the packaging bag 100 after three rolls of the packaged body T in the opened packaging bag 100 are taken out. The storage property after opening was evaluated (see FIG. 13). The test was conducted five times for each example and comparative example, and evaluated according to the following criteria.
○: It was possible to wrap up 5 times out of 5 times (good)
×: could not be wrapped more than once in 5 times (bad)

[Example 1]
The packaging bag 100 of 1st Embodiment shown in FIGS. 1-5 was prepared. In the packaging bag 100, the first slit 50 is formed in the lower surface portion 11b of the top surface portion 11, the second slit 60 (slit base portion 61) is formed in the back surface portion BP of the upper surface portion 11a, and the second side surface portion 14 is Two slits 60 (extension slits 62) were formed. Moreover, the finger hook part 30 of the handle part 20 was formed by one slit. About this packaging bag 100, durability, opening property, taking-out property, and storage property were evaluated. The results are shown in Table 1.

[Example 2]
The packaging bag 100 of 2nd Embodiment shown in FIG. 6 was prepared. In this packaging bag 100, the packaging bag 100 was produced and evaluated similarly to Example 1 except not forming the 2nd slit 60 (extension slit 62) in the 2nd side part 14. FIG. The results are shown in Table 1.

[Example 3]
The packaging bag 100 of 2nd Embodiment shown in FIG. 6 was prepared. In this packaging bag 100, the packaging bag 100 was produced and evaluated similarly to Example 2 except not forming the 2nd slit 60 (slit base 61) in the back surface part BP of the upper surface part 11a. The results are shown in Table 1.

[Example 4]
The packaging bag 100 of the modification of 1st Embodiment shown in FIG. 8 was prepared. In this packaging bag 100, the packaging bag 100 was produced and evaluated in the same manner as in Example 1 except that the finger hook portion 30 of the handle portion 20 was formed by two slits. The results are shown in Table 1.

[Example 5]
A fourth embodiment shown in FIGS. 21 to 24 was prepared. In the packaging bag 100, the first dummy slit 70 and the second dummy slit 80 (dummy slit base portion 81) are formed on the upper surface portion 11 a of the top surface portion 11, and the second dummy slit 80 (extension dummy slit) is formed on the first side surface portion 13. A packaging bag 100 was produced and evaluated in the same manner as in Example 1 except that 82) was formed. The results are shown in Table 1.

[Example 6]
A modification (not shown) of the fourth embodiment was prepared. A packaging bag 100 was produced and evaluated in the same manner as in Example 5 except that the finger hook portion 30 of the handle portion 20 was formed by two slits. The results are shown in Table 1.

[Comparative Example 1]
As shown in FIG. 25, the finger hook portion 30 of the handle portion 20 is formed by two slits, and an opening slit 90 (perforation indicated by a broken line in FIG. 25) instead of the first slit 50 and the second slit 60. A packaging bag 100 was produced and evaluated in the same manner as in Example 1 except that it was formed between the two finger hook portions 30 of the handle portion 20. The results are shown in Table 1.

[Comparative Example 2]
As shown in FIG. 26, in place of the first slit 50 and the second slit 60, the opening slit 90 is formed between the lower end edge 22 of the handle portion 20 and the finger hook portion 30, and the first embodiment. Similarly, the packaging bag 100 was produced and evaluated. The results are shown in Table 1.

[Comparative Example 3]
As shown in FIG. 27, the finger hook portion 30 of the handle portion 20 is formed by two slits, and a T-shaped opening slit 90 (a horizontal slit 91 and a vertical slit) is used instead of the first slit 50 and the second slit 60. A packaging bag 100 was produced and evaluated in the same manner as in Example 1 except that the slit 92) was formed in the first side surface portion 13 of the main body portion. The results are shown in Table 1.

[Comparative Example 4]
As shown in FIG. 28, the finger hook portion 30 of the handle portion 20 is formed by two slits, and the opening slit 90 (the top slit 91 and the side slit 92) is used instead of the first slit 50 and the second slit 60. A packaging bag 100 was prepared and evaluated in the same manner as in Example 1 except that the top surface portion 11, the first side surface portion 13, and the second side surface portion 14 of the main body portion were formed. The results are shown in Table 1.

[Comparative Example 5]
As shown in FIG. 29, the finger hook portion 30 of the handle portion 20 is formed by two slits, and an opening slit 90 (a front slit 91 and a side slit 92) is used instead of the first slit 50 and the second slit 60. A packaging bag 100 was produced and evaluated in the same manner as in Example 1 except that it was formed on the top surface portion 11, the first side surface portion 13, and the second side surface portion 14 of the main body portion. The results are shown in Table 1.

  From Table 1, the packaging bag 100 in which the first slit 50 is provided in the lower surface portion 11b of the top surface portion 11 has good durability, the tensile strength is less than 1.50 kgf, and the unsealing property is 4. It was 0 or more, the takeout property was 4.0 or more, and the storage property was good (Examples 1 to 6).

  On the other hand, any of the packaging bags 100 not provided with the first slit 50 has poor durability, the tensile strength is 1.50 kgf or more, and the unsealing property is less than 4.0. The take-out property was less than 4.0, and the storage property was poor (Comparative Examples 1 to 5).

  In addition, the packaging bag 100 in which the first slit 50 is provided in the lower surface portion 11b of the top surface portion 11 regardless of whether the number of the slits constituting the finger hook portion 30 of the handle portion 20 is one or two. Durability, tensile strength, unsealing property, take-out property, and storage property were all the same (Examples 1, 4 to 6).

  From these results, by forming the first slit near the center of the top surface portion of at least one of the pair of bottom surface portions constituting the top surface portion of the main body portion, the unsealing property, the taking out property, and the storage property are improved. It has been found that excellent packaging bags can be obtained.

  Moreover, even when the finger hook part of the handle part is formed by one slit (when the handle part is shaped to be easy to hold), it has been found that the packaging bag is difficult to tear before opening.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to specific embodiment, A various deformation | transformation and change are possible within the range of the invention described in the claim. .

100 Packaging bag T Package body (toilet paper)
DESCRIPTION OF SYMBOLS 10 Main-body part 11 Top surface part 11a Upper surface part SP Front surface part BP Back surface part 11b Lower surface part 11c Connection part GF1 1st folding part GF2 2nd folding part GF3 3rd folding part 12 Bottom face part 13 1st side part 13a Upper end edge 14 2nd Side part 14a Upper edge 20 Handle part 21 Upper edge 22 Lower edge 23 Side edge 24 Side edge 25 Plane part 30 Finger hook part 40 Seal part 50 First slit 60 Second slit 61 Slit base 62 Extension slit FG Fragment 70 First dummy slit 80 Second dummy slit 81 Dummy slit base 82 Extension dummy slit 90 Unsealing slit 110 Unloading section 111 Unloading roll 120 Cylindrical film forming section 130 Slit forming section 140 Gusset forming section 141 Folding plate 150 Seal forming section 160 Winding part 161 Winding roll RF Rum TF Tubular film SS Side seal GS Gusset sheet MD Transport direction P Finger

Claims (13)

A main body part that is formed in a gusset shape with a tubular film and that accommodates a packaged body;
A handle portion provided integrally with the main body portion on the top surface portion of the main body portion;
The top surface portion of the main body portion includes a pair of upper surface portions connected to a lower end edge of the handle portion and a pair of lower surface portions connected to a back surface portion of the upper surface portion and overlapping below the upper surface portion. And
A packaging bag, wherein a first slit is formed near a central portion of the top surface portion of at least one of the pair of lower surface portions.   The packaging bag according to claim 1, wherein the first slit extends in a thickness direction of the handle portion.   The packaging bag according to claim 1 or 2, wherein the first slit is formed in any lower surface portion of the pair of lower surface portions.   The second slit is formed near the side edge of the handle portion of the back surface portion of the upper surface portion connected to the lower surface portion where the first slit is formed. The packaging bag of Claim 1.   The packaging bag according to claim 4, wherein the second slit extends from a lower end edge side of the handle part toward an upper end edge side of the main body part.   The packaging bag according to claim 5, wherein the second slit further has an extension slit extending from a top surface portion side of the main body portion toward a bottom surface portion side of the main body portion. A method for using the packaging bag according to any one of claims 1 to 6,
Breaking the portion of the lower surface where the first slit is formed;
The method for using a packaging bag, wherein the part of the lower surface part that is broken is pulled out of the main body part along the longitudinal direction of the handle part.   The usage method of the packaging bag of Claim 7 which pulls down a part of said lower surface part further to the bottom face part side of the said main-body part.   The usage method of the packaging bag of Claim 7 or 8 which puts a part of said lower surface part further inside the said main-body part. A main body part that is formed in a gusset shape with a tubular film and that accommodates an object to be packaged, and a handle part that is provided integrally with the main body part on the top surface part of the main body part, The top surface portion has a pair of upper surface portions whose surface portion is connected to the lower end edge of the handle portion, and a pair of lower surface portions which are connected to the back surface portion of the upper surface portion and overlap below the upper surface portion. A manufacturing method of
A gusset forming step of forming a gusset-like sheet by folding the tubular film into a gusset shape;
The manufacturing method of a packaging bag which has the slit formation process which forms a 1st slit near the center part of the said ceiling part at least any one of a pair of said lower surface part.   The slit forming step includes a step of forming a second slit near a side edge of the handle portion of a back surface portion of the upper surface portion connected to the lower surface portion where the first slit is formed. Item 11. A method for producing a packaging bag according to Item 10.   The said slit formation process is a manufacturing method of the packaging bag of Claim 10 or 11 performed before the said gusset formation process.   The said slit formation process is a manufacturing method of the packaging bag of Claim 10 or 11 performed after the said gusset formation process.

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