JP6596939B2 - Packaging bags and packages - Google Patents

Description

  The present invention relates to a packaging bag for enclosing liquid or powdered contents and a package used for the packaging bag.

  A packaging bag enclosing contents such as a beverage is disclosed in Patent Document 1. This packaging bag includes a bag body formed of a film, and a straw having a double structure having an inner pipe and an outer pipe. The bag body has a body portion and a cover portion made of different films, and the contents are injected into the body portion.

  The cover part is folded in two at the lower end and wraps the straw, and the upper end of the main body part and the periphery of the cover part are thermally bonded together with the straw sandwiched between the upper ends of the main body part. Thereby, the outer pipe of the straw is fixed to the main body portion, and the straw is disposed in the sealed space in the cover portion. The cover part is provided with a score line along the upper end of the main body part.

  When opening the packaging bag having the above structure, the main body is picked with one hand, the cover is picked with the other hand, and cut along the score line. Next, when the inner pipe of the straw is pushed down, the lower end of the cover part is broken and the inner pipe enters the main body part. Thereby, the contents in the main body are taken out through the straw.

JP 2007-118968 A (page 3 to page 4, FIG. 1)

  However, according to the above-described conventional packaging bag, both hands are required at the time of opening, and therefore, when one hand is closed, it cannot be opened, and there is a problem that convenience is poor.

  An object of this invention is to provide the packaging bag which can be opened with one hand, and can improve the convenience, and the package used for it.

  In order to achieve the above object, the present invention comprises a bag body formed by a laminated body having a heat-adhesive resin disposed on the inner surface and enclosing a granular or liquid content, and an opening member disposed in the bag body. The bag body is sealed by the seal portion containing the seal portion that thermally bonds the outer peripheral portion with the thermo-adhesive resin, the contents and the opening member, and at the upper end portion. A storage portion having a stepped portion that narrows a lateral width with respect to a lower portion at an upper peripheral edge; and an insertion hole that is opened on the seal portion on a side of the stepped portion and into which a finger is inserted, and the opening member The storage portion is extended from the lower portion to the upper portion, and has a sharp portion having a sharp upper end and a passage for contents formed along the longitudinal direction.

  According to this configuration, the contents and the opening member extending in the vertical direction are stored in the storage portion of the bag body. When opening the packaging bag, an index finger or thumb is inserted into the insertion hole to grip the packaging bag, and the lower end of the packaging bag is pressed against a part of the body or on a desk. Thereby, the sharp part of the opening member breaks through the upper end of the storage part having a narrow width by the step part, and the contents are taken out through the passage provided in the opening member.

  According to the present invention, in the packaging bag configured as described above, the contents of the storage portion are in liquid form, and the opening member is formed of a cylindrical member that forms the passage therein. According to this configuration, the liquid content is taken out by suction from the upper end of the opening member made of a cylindrical member that has broken through the upper end of the storage portion.

  According to the present invention, in the packaging bag having the above-described configuration, the contents of the storage portion are granular, and the opening member is a rod-shaped member having the passage on the outer peripheral surface. According to this configuration, when the opening member made of a rod-like member breaks through the upper end of the storage portion and the packaging bag is turned upside down, the powdered contents are taken out through the passage provided on the outer peripheral surface of the opening member.

  Further, in the packaging bag having the above-described configuration, the stepped portion is provided on one side edge of the storage portion, and the side edge facing the stepped portion is formed in a straight line by bending the laminated body. It is a feature. According to this structure, when inserting an opening member from the lower end of a bag main body, the side edge part which bent the laminated body curves so that it may have a curvature center inside. The opening member is guided to the upper end portion of the storage portion along the curved side end portion.

  Moreover, the present invention is characterized in that, in the packaging bag configured as described above, a corner of a lower end portion of the stepped portion is inclined with respect to the vertical direction. According to this structure, the opening member inserted from the lower end of a bag main body is guided to the upper end part of a storage part along the step part which inclined.

  Further, the present invention provides the packaging bag having the above-described configuration, wherein when the opening member is tilted in a state where the lower end of the opening member is close to the lower end of one side edge of the storage portion, the other side edge of the storage portion The upper end of the unsealing member is close to the stepped portion provided on the upper surface of the unsealing member, and tilting of the unsealing member is restricted. According to this configuration, it is possible to prevent the upper end of the opening member from dropping off below the stepped portion.

  Further, in the packaging bag having the above-described configuration, the angle formed between the tangent of the stepped portion and the opening member at a position where the upper end of the opening member, whose inclination is restricted by the stepped portion, is close to 40 ° or less. It is characterized by. According to this configuration, it is possible to prevent the upper end portion of the unsealing member tilting in the storage portion from sliding with the stepped portion and breaking through the storage portion with the sharp portion.

  Moreover, the present invention is characterized in that, in the packaging bag having the above-described configuration, the height from the lower end to the upper end of the storage portion is set to 70 mm to 130 mm.

  Further, the present invention provides a package formed of a laminate having an inner surface provided with a heat-adhesive resin, and a seal portion that thermally bonds an outer peripheral portion with the heat-adhesive resin, and a lateral width of an upper end portion is narrowed relative to a lower portion. A stepped portion is provided on the upper peripheral edge and a lower end is opened, and an insertion hole that is opened on the seal portion on the side of the stepped portion and into which a finger is inserted is provided.

  According to the present invention, the opening member provided with the insertion hole in the side of the stepped portion provided at the upper peripheral edge of the storage portion and having the sharp portion at the upper end extends from the lower portion to the upper portion of the storage portion. Thereby, a finger can be passed through the insertion hole to grip the bag body, the lower end of the bag body can be pressed, and the packaging bag can be easily opened with one hand. At this time, the finger inserted through the insertion hole is not disposed above the storage portion, and the piercing by the sharp portion to the hand can be prevented. Therefore, the convenience of the packaging bag can be improved.

The front view which shows the packaging bag of 1st Embodiment of this invention. Sectional drawing which shows the laminated body of the packaging bag of 1st Embodiment of this invention. The perspective view which shows the state at the time of opening member insertion of the packaging bag of 1st Embodiment of this invention The front view explaining the attitude | position of the opening member of the packaging bag of 1st Embodiment of this invention The perspective view explaining the opening operation of the packaging bag of 1st Embodiment of this invention The perspective view explaining the opening operation of the packaging bag of 1st Embodiment of this invention The perspective view explaining the opening operation of the packaging bag of 1st Embodiment of this invention The front view which shows the state by which the packaging bag of 1st Embodiment of this invention was opened The front view which shows the packaging bag of 2nd Embodiment of this invention. The front view which shows the opening member of the packaging bag of 2nd Embodiment of this invention. The top view which shows the opening member of the packaging bag of 2nd Embodiment of this invention The front view which shows the state by which the packaging bag of 2nd Embodiment of this invention was opened The front view which shows the packaging bag of 3rd Embodiment of this invention. The front view which shows the packaging bag of 4th Embodiment of this invention. The front view which shows the packaging bag of 5th Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a front view of the packaging bag of the first embodiment. The packaging bag 1 includes a bag body 10 formed of a laminate 2 (see FIG. 2) and an opening member 20 disposed in the bag body 10. The bag body 10 is filled with a liquid content W such as a liquid beverage or a jelly beverage.

  The bag body 10 is formed of a so-called three-sided seal bag, and the laminated body 2 (see FIG. 2) is bent at one side 10a to form a seal portion 13 in which a thermoadhesive resin is thermally bonded to the outer periphery of the three sides. The bag body 10 is provided with a storage portion 11 that stores the contents W and is sealed by the seal portion 13. The outer peripheral edge of the storage part 11 is formed by a seal part 13.

  A stepped portion 11a is provided on the upper peripheral edge of the storage portion 11 to make the upper end width D2 narrower than the lower width D1. A narrow width portion 12 having a narrow width D2 is formed at the upper end of the storage portion 11 by the step portion 11a.

  The step portion 11a includes a vertically extending portion 11c that extends in the vertical direction from the upper end of the storage portion 11, and an inclined portion 11b that is continuous with the lower end of the vertically extending portion 11c and is inclined with respect to the vertical direction. In the present embodiment, the inclined portion 11b formed at the corner of the lower end portion of the step portion 11a is formed in a curved shape, but may be formed in a linear shape. The storage portion 11 is provided with a stepped portion 11a only on one side edge, and the side edge facing the stepped portion 11a is formed in a straight line by a side 10a obtained by bending the laminated body 2 (see FIG. 2).

  Further, an insertion hole 14 is opened on the seal portion 13 on the side of the step portion 11a. As will be described later, the insertion hole 14 is formed in a circular shape having a diameter of about 25 mm to 30 mm, an elliptical shape having a short diameter of about 25 mm to 30 mm, or the like. The packaging bag 1 is held by the user, and the lower end of the storage portion 11 is pressed as will be described later. For this reason, the height H from the lower end to the upper end of the storage portion 11 is formed to be about 70 mm to 130 mm according to the contents W. For example, when the contents W are for children, the height H may be formed to be about 70 mm to 110 mm, for example. Moreover, when the content W is for adults, the height H is preferably formed to about 90 mm to 130 mm, for example.

  The unsealing member 20 is formed of a cylindrical member such as a straw and extends from the lower part of the storage part 11 to the upper part. A passage 22 (see FIG. 3) that communicates the upper and lower ends is formed inside the opening member 20. At the upper end of the opening member 20, a sharpened portion 21 is provided that is cut obliquely and formed into a sharpened shape. The tip of the sharp portion 21 is formed in a curved shape with a small curvature radius to prevent injury.

  FIG. 2 shows a cross-sectional view of the laminate 2 forming the bag body 10. The laminate 2 is formed by laminating an inner layer 4 formed of a thermoadhesive resin on the inner surface side of the outer layer 3. Since the outer layer 3 is a basic material constituting the bag body 10, a synthetic resin film having excellent properties in mechanical, physical, chemical and the like can be used. For example, a resin film such as polyester, polyamide, or polypropylene can be used for the outer layer 3.

  As the resin film, a stretched film stretched in a biaxial direction with good printability of a print layer described later is suitable. The thickness of the film constituting the outer layer 3 may be determined in consideration of cost and the like, but about 12 μm to 25 μm is appropriate.

  Specific examples of the outer layer 3 include a biaxially stretched nylon film, a biaxially stretched polypropylene film (OPP), a single body such as a biaxially stretched polyester resin film, or a laminate thereof. Particularly preferably used. Specific materials for the biaxially stretched polyester resin film include, for example, polyethylene terephthalate resin (PET), polybutylene terephthalate resin, polyethylene-2,6-naphthalate resin, polybutylene-2,6-naphthalate resin, polycyclohexanedimethylene. A terephthalate resin or the like can be used.

  The outer layer 3 may be formed with a print layer to which a desired print pattern such as a character, graphic, symbol, or pattern is added. As a method for forming a printed layer, an ink composition is prepared by adding one or more kinds of normal ink vehicles as a main component with additives and colorants as necessary, and kneading them with a solvent or diluent. . Then, a desired printing pattern is printed on the outer layer 3 by a printing method such as gravure printing, offset printing, letterpress printing, screen printing, transfer printing, flexographic printing using the ink composition to form a printing layer. As the additive, one or more of a plasticizer, a stabilizer, an antioxidant, a light stabilizer, an ultraviolet absorber, a curing agent, a crosslinking agent, a lubricant, an antistatic agent, a filler and the like are arbitrarily selected. Further, any dye or pigment is selected as the colorant.

  The inner layer 4 is made of a thermoadhesive resin and melts by heating to fuse the laminates 2 to each other. As the thermal adhesive resin used for the inner layer 4, low density polyethylene (LDPE), medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene (LLDPE), polypropylene (CPP), vapor deposition layer (silica, Polypropylene (VMPP) provided with alumina, aluminum, etc.), ethylene-α olefin copolymer, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene and acrylic Ester copolymers with acid esters, ethylene-methacrylic acid copolymers, ethylene-propylene copolymers, methylpentene polymers, polyolefin resins (polyethylene, polypropylene, etc.) and unsaturated carboxylic acids (acrylic acid, methacrylic acid, maleic anhydride) , Fumar One not selected from modified acid-modified polyolefin resin in equal) to be used or two or more. Preferable examples include unstretched polypropylene.

  As a method for forming the inner layer 4, a method of laminating the above-mentioned thermoadhesive resin by a melt extrusion method or a method of laminating a thermoplastic single layer or multilayer film is used. The thickness of the inner layer 4 may be appropriately determined in consideration of required physical properties (heat sealability), cost, and the like, and is preferably about 15 μm to 100 μm, particularly about 25 μm to 50 μm.

  Note that a barrier layer that imparts a water vapor barrier property or a gas barrier property may be laminated between the outer layer 3 and the inner layer 4 when the content W to be enclosed is easily altered by moisture or oxygen. As the barrier layer, films such as biaxially stretched polyethylene terephthalate (PET), biaxially stretched polypropylene (OPP), saponified ethylene / vinyl acetate copolymer (EVOH), polyvinylidene chloride (PVDC), polyacrylonitrile (PAN), etc. Can be used.

  Moreover, as a barrier layer, aluminum foil (AL), a biaxially stretched nylon film (ONY) provided with a vapor deposition layer, a biaxially stretched nylon film (ONY) provided with a coating layer of PVDC, and a polypropylene film provided with a vapor deposition layer (VMPP), a polyethylene terephthalate film (VMPET) provided with a vapor deposition layer, or the like can be used. As the vapor deposition layer, silica, alumina, aluminum, or the like can be used.

  Since a film provided with an aluminum foil or an aluminum vapor deposition layer is opaque, it can also serve as a light shielding layer. As the aluminum foil used for the barrier layer, an annealed aluminum foil is suitable, and a thickness of about 6 μm to 15 μm is suitable.

  Also, an intermediate layer is laminated between the outer layer 3 and the inner layer 4, and mechanical toughness, bending resistance, puncture resistance (pinhole resistance), impact resistance, cold resistance, heat resistance, chemical resistance, etc. Physical properties may be imparted to the bag body 10. As the intermediate layer, for example, a stretched film of polyolefin (polyester, polyamide, polyethylene, polypropylene, ethylene-propylene copolymer, etc.) can be used. Alternatively, when a barrier layer is laminated between the outer layer 3 and the inner layer 4, an intermediate layer may be laminated between the outer layer 3 and the barrier layer, or an intermediate layer may be laminated between the barrier layer and the inner layer 4. .

  As a manufacturing method of the laminated body 2, a lamination method used when manufacturing a normal packaging material, for example, a dry lamination method, a wet lamination method, a solventless lamination method, an extrusion lamination method, and other methods can be used. . Moreover, when laminating | stacking each said layer as needed, pre-processing, such as a corona discharge process, an ozone process, a flame | frame process, a blast process, etc. can be arbitrarily given to the surface of a to-be-laminated substrate, for example.

  FIG. 3 is a perspective view showing a state when the packaging bag 1 is manufactured. The bag body 10 of the packaging bag 1 first bends the laminated body 2 (see FIG. 2) at one side 10a, and thermally bonds the two sides of the side and the upper side facing the side 10a by the seal portion 13. Thereby, the accommodating part 11 which has the level | step-difference part 11a and was open | released by the opening part 5a is formed. Next, the insertion hole 14 is formed by punching on the seal portion 13 on the side of the step portion 11a. Thereby, the package 5 having the storage portion 11 and the insertion hole 14 with the lower end opened is formed.

  Next, the opening member 20 is inserted by filling the contents W (see FIG. 1) into the storage portion 11 through the opening 5a. At this time, even if the opening member 20 is inserted obliquely, the sharp portion 21 slides on the inclined portion 11b and the sharp portion 21 can be easily guided to the narrow width portion 12. Further, when the opening 5a is widened, the one end portion of the opening 5a formed by the side 10a obtained by bending the stacked body 2 is curved so as to have a center of curvature on the inside. For this reason, the opening member 20 can be easily inserted to the narrow width part 12 along the side 10a.

  Next, the lower end of the storage part 11 in which the contents W and the opening member 20 are inserted is thermally bonded. Thereby, the packaging bag 1 which enclosed the content W and the opening member 20 in the bag main body 10 is obtained.

  FIG. 4 is a front view of the packaging bag 1 for explaining the posture of the opening member 20 in the bag body 10. As shown in the figure, when the opening member 20 is tilted in a state where the lower end of the opening member 20 is close to the lower end of the left side edge of the storage unit 11, the upper end of the opening member 20 is close to the right side edge of the storage unit 11. Thus, the tilt of the opening member 20 is restricted. At this time, the angle θ1 formed between the right edge of the storage portion 11 and the opening member 20 is 40 ° or less.

  Further, when the opening member 20 is tilted in a state where the lower end of the opening member 20 (indicated by the alternate long and short dash line 20 ′) is close to the lower end of the right side edge of the storage unit 11, it is provided on the left side edge of the storage unit 11. The upper end of the opening member 20 comes close to the step portion 11a, and the tilt of the opening member 20 is restricted. Thereby, it is possible to prevent the opening member 20 from dropping below the step portion 11a. At this time, the angle θ2 formed by the tangent on the step portion 11a at a position close to the upper end of the opening member 20 and the opening member 20 is 40 ° or less.

  The width D1 (see FIG. 1) of the storage portion 11 and the length of the opening member 20 are determined so that both the angle θ1 and the angle θ2 are 40 ° or less. As a result, when a force is applied from below to the opening member 20 that is tilted within the storage portion 11, the sharp portion 21 slides on the side edge of the storage portion 11. For this reason, it is possible to prevent the side edge of the storage portion 11 from being pierced by the sharp portion 21.

  5-7 has shown the perspective view explaining the opening operation | movement of the packaging bag 1 of the said structure. When the packaging bag 1 is opened, the user's finger F (forefinger or thumb) is inserted into the insertion hole 14 as shown in FIG. Next, as shown in FIG. 6, the packaging bag 1 is grasped by one hand P of the user. Next, the lower end of the packaging bag 1 is pressed on a desk or a part of the user's body. Thereby, as shown in FIG. 7, the sharp part 21 of the opening member 20 breaks through the upper end of the storage part 11 whose width is narrowed by the step part 11a, and the packaging bag 1 is opened. At this time, since the finger F is inserted through the insertion hole 14, the finger F is not disposed above the storage portion 11, and can be prevented from being pierced by the sharp portion 21 with respect to the hand P.

  FIG. 8 shows a front view of the packaging bag 1 after opening. The liquid content W stored in the packaging bag 1 is taken out through the passage 22 (see FIG. 3) by suction from the upper end of the cylindrical opening member 20.

  According to the present embodiment, the opening member 14 is provided on the side of the step portion 11 a provided on the upper peripheral edge of the storage portion 11, and the opening member 20 having the sharp portion 21 at the upper end extends from the lower portion to the upper portion of the storage portion 11. Is done. Thereby, the finger F can be inserted into the insertion hole 14 to grip the bag body 10, the lower end of the bag body 10 can be pressed, and the packaging bag 1 can be easily opened with one hand. At this time, the finger F inserted through the insertion hole 14 is not disposed above the storage portion 11, and the piercing by the sharp portion 21 with respect to the hand P can be prevented. Therefore, the convenience of the packaging bag 1 can be improved.

  Moreover, since the contents W of the storage part 11 are liquid and the opening member 20 is formed of a cylindrical member that forms a passage 22 therein, the liquid contents W stored in the packaging bag 1 can be easily taken out. it can.

  Further, the step portion 11 a is provided on one side edge of the storage portion 11, and the side edge opposite to the step portion 11 a is formed in a straight line by the side 10 a bent from the laminated body 2. Thereby, when inserting the opening member 20 in the bag main body 10, it curves so that the bag main body 10 may have a curvature center inside by the edge | side 10a which bent the laminated body 2. As shown in FIG. For this reason, the opening member 20 can be easily inserted to the narrow width part 12 of the upper end part of the accommodating part 11 along the edge | side 10a.

  Moreover, the corner of the lower end part of the step part 11a is formed by the inclined part 11b inclined with respect to the vertical direction. For this reason, even if the opening member 20 is diagonally inserted into the storage portion 11 from below, the sharp portion 21 slides on the inclined portion 11b. Therefore, the sharp portion 21 at the upper end of the opening member 20 can be easily guided to the narrow width portion 12 of the storage portion 11.

  Further, when the opening member 20 is tilted in a state where the lower end of the opening member 20 is close to the lower end of one side edge of the storage unit 11, the opening member is provided on the step portion 11 a provided on the other side edge of the storage unit 11. The upper end of 20 approaches and the tilting of the opening member 20 is regulated. Thereby, it is possible to prevent the opening member 20 from dropping below the step portion 11a. Therefore, the narrow member 12 at the upper end of the storage portion 11 can be reliably opened by the opening member 20.

  Further, the angle θ2 formed by the tangent of the stepped portion 11a at the position where the upper end of the unsealing member 20 whose tilting is restricted by the stepped portion 11a is close to the opening member 20 is set to 40 ° or less, so that it tilts in the storage portion 11. The bag body 10 can be prevented from being pierced by the sharpened portion 21 of the opening member 20.

  Moreover, since the height H from the lower end to the upper end of the storage portion 11 is set to 70 mm to 130 mm, the user can easily grasp and open the packaging bag 1.

Second Embodiment
Next, FIG. 9 has shown the front view of the packaging bag 1 of 2nd Embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. The packaging bag 1 of the present embodiment encloses the powdered contents W and includes an opening member 30 different from the opening member 20 (see FIG. 1) of the first embodiment. Other parts are the same as those in the first embodiment.

  The packaging bag 1 includes a bag body 10 formed of a three-side seal bag, in which a powdery or granular content W such as a pharmaceutical product or food in a granular form is enclosed. In addition, since the content W is granular, the outer layer 3 (see FIG. 2) of the laminate 2 may be formed not only from the resin film described above but also from paper, synthetic fiber paper, or the like.

  10 and 11 show a front view and a top view of the opening member 30. The opening member 30 disposed in the bag body 10 is formed of a rod-shaped member of a resin molded product. The unsealing member 30 has a horizontal cross section formed in a cross shape by ribs 33 extending in the vertical direction and projecting in four radial directions. On the outer peripheral surface of the opening member 30, a passage 32 that communicates the upper and lower ends is formed between adjacent ribs 33. At the upper end of the unsealing member 30, a sharpened portion 31 that is cut into a mountain shape and formed into a sharpened shape is provided. The tip of the sharp portion 31 is formed in a curved shape with a small curvature radius to prevent injury.

  The packaging bag 1 having the above-described configuration is opened by breaking through the upper end of the storage portion 11 by the opening member 30 in the same manner as in FIGS. FIG. 12 shows a front view of the packaging bag 1 after opening. The packaging bag 1 whose upper end is opened is arranged upside down. The outer periphery of the opening member 30 at the opening portion is covered with the laminate 2 (see FIG. 2), and the passage 32 is formed by a space surrounded by the adjacent ribs 33 and the laminate 2. The powdery contents W stored in the packaging bag 1 are taken out through the passage 32 by its own weight.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Moreover, since the content W of the storage part 11 is granular, and the opening member 30 consists of a rod-shaped member which provided the channel | path 32 in the outer peripheral surface, the granular content W accommodated in the packaging bag 1 is taken out easily. be able to. The passage 32 may be formed by providing a groove extending in the vertical direction on the outer peripheral surface of the opening member 30 made of a rod-shaped member.

<Third Embodiment>
Next, FIG. 13 has shown the front view of the packaging bag 1 of 3rd Embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. The bag body 10 of the packaging bag 1 of the present embodiment is formed by a three-sided seal bag in which the laminated body 2 (see FIG. 2) is bent at the upper end. Other parts are the same as those in the first embodiment.

  The bag body 10 bends the laminated body 2 (see FIG. 2) at one side 10b at the upper end to form a seal portion 13 in which a thermoadhesive resin is thermally bonded to the outer peripheral portion of the three sides. A stepped portion 11 a is provided only on one side edge on the upper peripheral edge of the storage portion 11, and a side edge facing the stepped portion 11 a is formed in a straight line by the seal portion 13.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, since the bag body 10 is formed by bending the laminated body 2 at the upper end side 10 b, the seal portion 13 is not formed at the upper end of the storage portion 11. Thereby, the upper end of the accommodating part 11 can be opened with the pressing force lower than 1st Embodiment by the opening member 20, and the convenience of the packaging bag 1 can be improved more.

  In addition, you may use the bag main body 10 similar to this embodiment for the packaging bag 1 of 2nd Embodiment.

<Fourth embodiment>
Next, FIG. 14 has shown the front view of the packaging bag 1 of 4th Embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the first embodiment shown in FIGS. The packaging bag 1 of the present embodiment is provided with step portions 11 a on both side edges of the storage portion 11 of the bag body 10. Other parts are the same as those in the first embodiment.

  The bag body 10 is formed of a three-sided seal bag in which the laminate 2 (see FIG. 2) is bent at a side 10a that forms one side edge of the storage unit 11. On both side edges of the upper portion of the storage portion 11, there are provided step portions 11a that make the width D2 of the upper end narrower than the width D3 of the lower portion.

  In the figure, when the opening member 20 is tilted in a state where the lower end of the opening member 20 (indicated by the alternate long and short dash line 20 ′) is close to the lower end of the right side edge of the storage unit 11, a step provided on the left side edge of the storage unit 11. The upper end of the opening member 20 comes close to the portion 11a, and the tilt of the opening member 20 is restricted. Further, in the figure, when the opening member 20 is tilted in a state where the lower end of the opening member 20 (indicated by the alternate long and short dash line 20 ″) is close to the lower end of the left side edge of the storage unit 11, it is provided on the right side edge of the storage unit 11. The upper end of the opening member 20 comes close to the stepped portion 11a, and the tilting of the opening member 20 is restricted.

  At this time, the angle θ2 formed by the tangent on the step portion 11a at a position close to the upper end of the opening member 20 and the opening member 20 is 40 ° or less. Thereby, it can prevent that the bag main body 10 is pierced by the sharp part 21 of the opening member 20 which inclines in the storage part 11. FIG.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, since the step portions 11a are provided on both side edges of the upper portion of the storage portion 11, the lateral width D3 of the lower portion of the storage portion 11 can be increased. For this reason, the content volume of the content W can be increased rather than 1st Embodiment.

  Further, when the opening member 20 is tilted in a state where the lower end of the opening member 20 is close to the lower end of one side edge of the storage unit 11, the opening member is provided on the step portion 11 a provided on the other side edge of the storage unit 11. The upper end of 20 approaches and the tilting of the opening member 20 is regulated. Similarly, when the opening member 20 is tilted in a state where the lower end of the opening member 20 is close to the lower end of the other side edge of the storage portion 11, the opening is opened to the step portion 11 a provided on one side edge of the storage portion 11. The upper end of the member 20 approaches and the tilting of the opening member 20 is restricted. Thereby, it is possible to prevent the opening member 20 from dropping below the step portion 11a. Therefore, the narrow member 12 at the upper end of the storage portion 11 can be reliably opened by the opening member 20.

  In addition, you may use the bag main body 10 similar to this embodiment for the packaging bag 1 of 2nd Embodiment.

<Fifth Embodiment>
Next, FIG. 15 has shown the front view of the packaging bag 1 of 5th Embodiment. For convenience of explanation, the same reference numerals are given to the same parts as those in the fourth embodiment shown in FIG. The bag body 10 of the packaging bag 1 of the present embodiment is formed by a three-sided seal bag in which the laminated body 2 (see FIG. 2) is bent at the upper end. Other parts are the same as in the fourth embodiment.

  The bag body 10 bends the laminated body 2 (see FIG. 2) at one side 10b at the upper end to form a seal portion 13 in which a thermoadhesive resin is thermally bonded to the outer peripheral portion of the three sides. Step portions 11 a are provided on both side edges of the upper peripheral edge of the storage portion 11.

  According to this embodiment, the same effect as that of the fourth embodiment can be obtained. Further, since the bag body 10 is formed by bending the laminated body 2 at the upper end side 10 b, the seal portion 13 is not formed at the upper end of the storage portion 11. Thereby, the upper end of the accommodating part 11 can be opened with the pressing force lower than 4th Embodiment by the opening member 20, and the convenience of the packaging bag 1 can be improved more.

  In addition, you may use the bag main body 10 similar to this embodiment for the packaging bag 1 of 2nd Embodiment.

  In the first to fifth embodiments, the bag body 10 in which the periphery of the two stacked bodies 2 is thermally bonded by the seal portion 13 may be used. Alternatively, a bottom gusset-type bag body 10 in which the laminated body 2 folded in half is sandwiched between the lower parts of the two laminated bodies 2 and thermally bonded may be used.

  According to the present invention, the present invention can be widely used in packaging bags that enclose liquid or powdered contents.

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Laminated body 3 Outer layer 4 Inner layer 5 Packaging body 10 Bag main body 11 Storage part 11a Step part 11b Inclination part 11c Longitudinal extension part 12 Narrow width part 13 Seal part 14 Insertion hole 20, 30 Opening member 21, 31 Sharp part 22 , 32 passage 33 rib F finger P hand

Claims (8)

  In a packaging bag comprising a bag body formed by a laminate having an inner surface provided with a heat-adhesive resin and enclosing powdered or liquid contents, and an opening member disposed in the bag body, the bag body is A seal part that thermally bonds the outer peripheral part with the thermo-adhesive resin, and a step part that accommodates the contents and the opening member and is sealed by the seal part and narrows the lateral width of the upper end part relative to the lower part. A storage portion provided at a peripheral edge; and an insertion hole that opens on the seal portion on a side of the stepped portion and into which a finger is inserted, and the opening member extends from a lower portion to an upper portion of the storage portion. A packaging bag comprising a sharpened portion having a sharp upper end and a passage for contents formed along the longitudinal direction.   The packaging bag according to claim 1, wherein the contents of the storage portion are liquid, and the opening member is formed of a cylindrical member that forms the passage therein.   The packaging bag according to claim 1, wherein the contents of the storage portion are granular, and the opening member is formed of a rod-shaped member having the passage provided on an outer peripheral surface thereof.   The said step part is provided in the one side edge of the said accommodating part, and the side edge facing the said step part is formed in a straight line by the bending of the said laminated body. A packaging bag according to any one of the above.   The packaging bag according to any one of claims 1 to 4, wherein a corner of a lower end portion of the step portion is inclined with respect to the vertical direction.   When the opening member is tilted in a state where the lower end of the opening member is close to the lower end of one side edge of the storage portion, the opening member is placed on the stepped portion provided on the other side edge of the storage portion. The packaging bag according to any one of claims 1 to 5, wherein an upper end approaches and the tilting of the opening member is restricted.   The package according to claim 6, wherein an angle formed by a tangent of the stepped portion at a position where an upper end of the opening member whose inclination is restricted by the stepped portion is close to the opening member is 40 ° or less. bag.   The packaging bag according to any one of claims 1 to 7, wherein a height from a lower end to an upper end of the storage portion is set to 70 mm to 130 mm.

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