JP4531147B2 - Packaging bag - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a packaging bag for refill that is used to seal and wrap contents having fluidity such as liquid, granular, powder, etc., and to transfer the contents to another container or the like when used. The present invention relates to a refillable packaging bag having a spout that can be reliably and easily transferred without spilling the contents when the contents are transferred to another container.
[0002]
[Prior art]
Conventionally, as a refillable packaging bag for hermetically wrapping contents having fluidity such as liquid, granule, powder, etc., a standing pouch that is self-supporting and has characteristics as a three-dimensional container has been often used. . Also, in order to ensure that the contents can be easily and easily transferred to other containers without spilling out during use, an opening serving as a spout may be provided at the corner of the packaging bag, A method has been adopted in which a portion serving as a spout with a small diameter is provided at the top. However, in the former method, the spout of the packaging bag is soft and the mouth of the container to be transferred is made narrow, requiring the user to be careful. In addition, the latter method is somewhat improved in operability and certainty compared to the former method, but the spout is likely to be clogged during the transfer, and the contents may be accidentally spilled out. It was a problematic method.
[0003]
In addition, as a method of solving the above problem, there is a method of attaching a separate pouring tool such as a plastic molded product to the upper part of the packaging bag, although this is excellent in operability, reliability, and ease during transfer, The cost of the pouring tool is high and it is not easy to attach the pouring tool or to fill the contents. Using the packaging bag with the pouring tool attached as a packaging bag for transfer is not only for profitability and manufacturing. It was not possible at all.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention has been made in view of the above problems, and the object of the present invention is to be inexpensive, good in productivity, easy to fill the contents, and easy to operate and reliable at the time of transfer. Another object of the present invention is to provide a packaging bag having a spout excellent in performance and ease.
[0005]
[Means for Solving the Problems]
  As a result of various studies conducted by the present inventors to solve the above-mentioned problems, the packaging bag according to the first aspect of the present invention is the packaging bag having a peripheral edge sealed by a thermal bonding portion. A groove-shaped non-thermally bonded portion communicating with the inside of the packaging bag is provided in the portion, and at least the inner surface has a cross-sectional corner portion in the groove-shaped non-thermally bonded portion.Pre-shaped into a three-dimensional shapeA saddle-shaped reinforcing member made of synthetic resin is attached. By comprising in this way, the groove-shaped non-thermal-bonding part equipped with the reinforcement member becomes a spout. Further, since the reinforcing member provides a rigid spout, in terms of operability, it can be inserted into the mouth of the container accurately and can be applied, and the contents are not spilled outside. Furthermore, the contents can be transferred reliably and easily to the end without the plug spout being blocked during the transfer.
[0006]
  Further, at least the inner surface of the reinforcing member has a cross-sectional corner.Pre-shaped into a three-dimensional shapeBy using a bowl shape, especially when the contents are liquid, the inner side of the bowl-shaped reinforcing member does not have a corner portion such as a U-shaped section, a semicircular section, or a circular section. Compared to the shape, the direction of the content poured out first can be stabilized, and the first content poured out is not spilled.
[0007]
  The invention according to claim 2 is the packaging bag according to claim 1, wherein the reinforcing member forms the groove-shaped non-thermally bonded portion or the groove-shaped non-thermally bonded portion, Alternatively, these two portions are fixed to the packaging bag. By comprising in this way, a reinforcement member can be provided in a groove-like non-thermal-bonding part in a desired state.
[0008]
  The invention according to claim 3 is the packaging bag according to any one of claims 1 and 2, wherein the heat-bonded portion provided with the groove-shaped non-heat-bonded portion is provided in a substantially single shape. It is characterized by this. With this configuration, since the portion that becomes the spout protrudes from the packaging bag, the spout can be recognized at a glance, and the contents contained in the packaging bag can be transferred to another container or the like. When changing, the spout can be inserted into the mouth of another container, etc., and the contents can be poured out to pour out the contents, further enhancing operability, certainty and ease, and spilling out the contents It can be transferred.
[0009]
  Claims4The described inventionThe packaging bag according to claim 1InThe reinforcing member has a thin wall portion projecting perpendicularly to the longitudinal direction provided on the outer surface thereof.. By comprising in this way, the said thin wall part can be united with the said heat bonding part by heat-bonding according to the heat bonding part which forms the non-heat bonding part of a packaging bag, and a reinforcement member is easy. Can be provided in the groove-like non-thermally bonded portion. In addition, by forming the thin wall portion into a wedge-shaped cross section in which the reinforcing member side is formed thick, it can be more easily integrated with the thermal bonding portion.
[0010]
  Claims5The described invention is claimed.1-4In the packaging bag according to any one of the above, the groove-shaped non-thermally bonded portion is lying on the periphery of the thermal bonded portion provided with the groove-shaped non-thermally bonded portion with the reinforcing member remaining. For example, a horizontal cutout serving as a starting end is provided. By comprising in this way, while the starting end for providing a spout becomes clear, the trigger of tearing can be given.
[0011]
  Claims6The described invention is claimed.1-5In the packaging bag according to any one of the above, when the packaging bag is composed of a laminate of at least an outer layer and an inner layer, the synthetic resin film constituting the outer layer of the laminate becomes a packaging bag. In the state where the reinforcing member is left, a horizontal cut for laying down the groove-like non-thermally bonded portion is formed. By comprising in this way, when providing a spout and tearing a packaging bag, it can be torn smoothly without resistance.
[0012]
  Claims7The described invention is claimed.6The packaging bag according to the present invention is characterized in that the recumbent cut is engraved so as to be connected to the recumbent notch. By comprising in this way, it can be torn smoothly from the recumbent notch used as a tearing start end to a recumbent cut line, and a spout can be provided easily.
[0013]
  Claims8The described invention is claimed.6, 7In the packaging bag according to any one of the above, the transverse cut is a pulse oscillationTypeIt is characterized in that it is at least one continuous or discontinuous score line by a laser. By configuring in this way, it is possible to engrave horizontal cuts only in the film constituting the outer layer by selecting the wavelength of the pulsed laser.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail below.
First, in the present invention, the resin used as the inner layer of the laminate constituting the main body of the packaging bag may be any resin that can be sealed by thermal bonding when the laminate is used as the packaging bag. Density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, A resin composed of one or more resins such as ethylene-methyl acrylate copolymer and ethylene-methacrylic acid copolymer, or a sheet obtained by forming a film thereof can be used, and the thickness is 30 to 500 μm. Is appropriate.
[0015]
In addition, as a synthetic resin film used as the outer layer of the laminate that constitutes the main body of the packaging bag, since it becomes a basic material constituting the packaging bag, it has excellent properties in mechanical, physical, chemical, etc. For example, a polyester resin, a polyamide resin, a polypropylene resin, a polycarbonate resin, a polyacetal resin, or the like can be used. In addition, as a film using these resins, any of an unstretched film or a stretched film stretched in a uniaxial direction or a biaxial direction can be used, and the thickness of the film is the strength as a basic material. However, it is sufficient if the thickness can be kept to the minimum necessary for rigidity, etc. If it is too thick, laser processing defects etc. occur and tearing properties are lowered, and there is a disadvantage that costs increase, and conversely it is too thin Further, the strength, rigidity and the like are lowered, which is not preferable. In the present invention, about 12 to 30 μm is appropriate for the above reasons. In addition, the synthetic resin film was formed with a film coated with polyvinylidene chloride as needed, or an inorganic vapor deposition layer such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, or zirconium oxide. The film may have a barrier property. Further, since the synthetic resin film used as the outer layer is generally printed on the inner layer side of the synthetic resin film, the synthetic resin film used as the outer layer is printable. A stretched film stretched in a uniaxial direction or a biaxial direction is preferable.
[0016]
Furthermore, in the present invention, an intermediate layer may be provided between the inner layer and the outer layer, and the intermediate layer usually cannot function as a packaging bag with the inner layer and the outer layer alone. Provided. The functions include gas barrier properties, mechanical toughness, flex resistance, puncture resistance, impact resistance, wear resistance, cold resistance, chemical resistance, etc. This function is achieved by providing an intermediate layer. Examples of the base material used as the intermediate layer include metal foils such as aluminum, iron, copper, and tin, polyolefins such as polyethylene terephthalate, polyamide, polyethylene, and polypropylene, polyvinyl chloride, polycarbonate, polyvinyl alcohol, ethylene Vapor deposition of propylene copolymer, saponified ethylene-vinyl acetate copolymer, etc. or films coated with polyvinylidene chloride on these, or inorganic materials such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide Or a film made of polyvinylidene chloride or the like can be used. One or more of these substrates can be used in combination. Note that the thickness of the base material only needs to satisfy the function required for the packaging bag, and can be appropriately selected as necessary.
[0017]
In addition, the laminate constituting the main body of the packaging bag of the present invention is bonded to the outer layer, the inner layer, or, if necessary, the intermediate layer appropriately using a known dry lamination method, T-die extrusion method, or the like. Can be obtained. In the case of using the T-die extrusion method, an anchor coating agent may be preliminarily applied to the extruded side as necessary for the purpose of improving adhesiveness.
[0018]
Next, in the present invention, as a method of engraving a side cut when the packaging film is formed on the synthetic resin film used as the outer layer, for example, a needle punch method for pressing a heated needle, an emboss roll method, Polishing roll method, hot melt punching method that melts and punches films using a grinding wheel, polishing tape, etc., physical punching method using a knife, cutter, etc., processing methods such as laser beam processing, corona discharge, plasma discharge, etc. It can be done by the method. In the present invention, when engraving a horizontal cut in a synthetic resin film used as an outer layer, the synthetic resin film alone or a resin having thermal adhesiveness used as an inner layer in the outer layer or the resin A state of a laminate composed of two layers obtained by laminating sheets made of a film, or a state of a laminate composed of at least three layers in which the intermediate layer is provided between the outer layer and the inner layer, and further You may engrave in any states, such as the state of the packaging bag which uses a body, and can thereby provide a horizontal cut in the synthetic resin film used as an outer layer.
[0019]
In the present invention, the horizontal cut line may have any shape such as a straight line, a curved line, a perforated line, or a broken line, and the number thereof may be one or more, or may be continuous. Alternatively, it may be discontinuous. Further, the structure of the horizontal cut line may be any state of a through hole, a half cut state, or a state in which they are mixed. In the present invention, the horizontal line cut portion may be weakened to act as a cut of the packaging bag. .
[0020]
By the way, in the present invention, as a method for forming a cut in a synthetic resin film used as an outer layer, a method of forming a perforated cut using a pulse oscillation type laser is the most suitable method. The type of laser used for this can be, for example, a carbon dioxide laser, a YAG laser, a semiconductor laser, an argon ion laser or the like, and is not particularly limited. However, when a cut is formed in a synthetic resin film used as an outer layer, it is necessary for the film to be used to absorb the laser oscillation wavelength. For example, when a carbon dioxide laser is used, the 10.6 micron wavelength of the carbon dioxide laser light is easily absorbed selectively by a polyamide film (nylon-6 film), and linear low density polyethylene or ethylene-vinyl acetate copolymer. Most of the film is transparent. Therefore, a film mainly composed of linear low-density polyethylene or ethylene-vinyl acetate copolymer is used as the inner layer thermal adhesive film, and a biaxially stretched polyamide film (nylon--) is used as the synthetic resin film used as the outer layer. 6 film), and using a laminate composed of a combination of the two, and irradiating it with a carbon dioxide laser to perform laser processing, the biaxially stretched polyamide film (nylon— 6 film) can be selectively engraved, and the cut may be blocked by melting a film mainly composed of linear low density polyethylene or ethylene-vinyl acetate copolymer. The packaging bag can be torn very well. Further, the same result as described above can be obtained even if laser processing is performed by irradiating a carbon dioxide laser in the state of a packaging bag using the laminate. As described above, by selecting the wavelength by laser processing, a cut can be selectively engraved in the synthetic resin film used as the outer layer.
[0021]
In addition, as a method for forming the horizontal cutout, for example, it can be easily formed by punching out a predetermined portion of the packaging bag using an I-shaped, V-shaped, or other polygonal blade shape. .
[0022]
Next, the reinforcing member of the present invention will be described.
The reinforcing member of the present invention, when transferring the contents stored in the packaging bag to another container, ensures a certain opening state in the portion serving as the spout of the packaging bag and gives the spout rigidity. It is provided to prevent the contents from being spilled outside, and can be inserted into the mouth of the container accurately and can be applied. As such a reinforcing member, a rigid molded article having a passage through which the contents pass can be used, but when the contents are poured out, the direction of the contents is stabilized so as not to spill outside. In order to achieve this, it is necessary that the surface serving as a passage through which the content of the reinforcing member passes is formed in a shape having a cross-sectional corner. Thus, by forming the surface that becomes the passage through which the contents of the reinforcing member pass into a shape having a cross-sectional corner, the direction in which the contents come out when the contents are poured out can be stabilized, and the outside Spilling can be prevented.
[0023]
Further, the reinforcing member may be provided with a thin wall portion perpendicular to the longitudinal direction of the reinforcing member on the outer surface of the reinforcing member (the surface opposite to the surface serving as a passage through which the contents pass). By providing a thin wall portion, the reinforcing member can be easily attached to the non-thermal bonding portion, and the thermal bonding portion is thermally bonded so that the thin wall portion comes to the thermal bonding portion forming the non-thermal bonding portion. By doing so, the reinforcing member can be easily fixed to the packaging bag. Further, by forming the thin wall portion in a wedge shape in which the reinforcing member side is formed thick, it can be more easily fixed to the packaging bag.
[0024]
Examples of materials that can be used for such a reinforcing member include low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (linear) low-density polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-vinyl acetate. Copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, polystyrene, acrylonitrile-butadiene-styrene copolymer, polyethylene terephthalate, polyurethane, polyamide Alternatively, other semi-rigid or rigid synthetic resins can be used, and those having a heat-adhesive property used for the inner layer of the packaging bag and those that can be melted by heat and fused together are preferable. The reinforcing member may be colored with a pigment or the like as necessary. The reinforcing member may be appropriately produced by a well-known injection molding method, blow molding method, extrusion method, or bending method (from a plate-like material).
[0025]
Next, the manufacturing method of the packaging bag of this invention manufactured using said laminated body and a reinforcement member is demonstrated.
As the form of the main body of the packaging bag of the present invention, a three-side seal type, a four-side seal type, a standing pouch, a gusset type, an envelope-sealed seal type, a pillow type, etc. can be arbitrarily selected. It will not specifically limit if the structure and form of the spout which pour out a certain content can be taken.
[0026]
Therefore, a well-known bag making machine can be used for making the packaging bag of the present invention, depending on the form of the main body portion, and a portion serving as a spout, a reinforcing member, a notch, and a cut are provided. For example, the packaging bag of the present invention is manufactured by incorporating a necessary processing device such as a reinforcing member attaching device, a die cutting device, a score engraving device, or the like into a bag making machine or by providing it on a separate line. Can do.
[0027]
Next, the present invention will be described in more detail using an embodiment shown in the drawings.
1 is a plan view of an embodiment of a packaging bag according to the present invention, FIGS. 2 to 6 are embodiments showing the shape of a reinforcing member according to the present invention, and FIG. 7 is a groove shape of the packaging bag according to the present invention of FIG. FIG. 8 is a layer configuration diagram of the packaging bag of FIG. 1, where 1 is the packaging bag, 2 is the bottom thermal bonding portion, 3. , 4 is a body heat-bonding portion, 5 is a groove-shaped non-thermal bonding portion, 6 is a spout-forming heat-bonding portion, 7, 7a, 7b, 7c, 7d, and 7e are reinforcing members, and 8 is a notch for forming a spout. , 9 is a spout forming slit, 10 is a heat bonding part, 50 is a thin wall part, 60 and 61 are inner surfaces, 70 is an outer layer, 80 is an inner layer, 90 is a laminate, and A is a heat bonding part for sealing a filling port. Each is shown.
[0028]
FIG. 1 is a plan view of an embodiment of a packaging bag according to the present invention, and the packaging bag 1 is a bag in which a main body portion is formed into a standing pouch shape consisting of a body and a bottom material. As shown in FIG. 2, the body and the bottom material are an outer layer 70 made of a biaxially stretched nylon film (single-sided corona discharge treatment) of 15 μm and an inner layer made of a 120 μm linear low-density polyethylene film (single-sided corona discharge treatment). 80 is formed of a laminate 90 in which corona discharge treated surfaces are bonded together by a known dry lamination method using a two-component reactive polyurethane adhesive. A boat-shaped bottom thermal bonding portion 2 is formed at the bottom of the packaging bag 1, and trunk thermal bonding portions 3 and 4 are formed at both ends of the trunk. Further, a pour spout formed by a groove-shaped non-thermally bonded portion 5 communicating with the inside of the packaging bag 1 is trimmed into a substantially shell shape at the upper corner (the upper left portion in FIG. 1) of the packaging bag 1. A reinforcing member 7 formed of a molded product is provided in the groove-like non-thermal bonding portion 5 while being formed by the thermal bonding portion 6. In addition, pour spout forming notches 8 and 8 are formed at positions opposed to the peripheral edge on the front end side of the tubular portion of the substantially bullet-shaped spout forming thermal bonding portion 6, and the spout forming notch 8, A spout-forming cut 9 is formed on the line connecting 8. Further, the filling port sealing heat bonding portion A provided at the peripheral edge connecting the substantially bullet-shaped spout-forming heat bonding portion 6 and the body heat bonding portion 4 of the packaging bag 1 is the packaging bag 1. In the bag-making stage, it is not thermally bonded but is in an open state, and the contents are filled from this portion.
[0029]
Further, the reinforcing member 7 provided in the groove-shaped non-thermally bonded portion 5 is usually made of the same resin as the inner layer constituting the main body portion of the packaging bag 1, and has a bowl shape of the reinforcing member 7. As a typical example of the above, for example, as shown in FIGS. 2- (A) to 2- (E), a reinforcing member formed with a shape in which an inner surface 60 forming a passage side through which contents pass has a cross-sectional corner. 7a can be mentioned. 2- (A) is a bowl shape in which a cylinder is notched in a V shape in the longitudinal direction, FIG. 2- (B) is a bowl shape having a V shape, and FIG. 2- (C) is approximately 4 minutes in cross section. A three-circle cylinder, wherein a cross section of the cylinder is cut out into a pentagonal shape including one side of the substantially three-quarter cross section and the cross section of the substantially three-quarter section of the cylinder is opposed to the circumference 2- (D) shows one side of a pentagonal cylindrical body cut out in a longitudinal shape so that a portion to be cut is a side perpendicular to one side of the cross section of the approximately three-quarter circle. The notched saddle shape, FIG. 2- (E), is constituted by a saddle shape in which one corner of the hexagonal cylindrical body is notched.
[0030]
Moreover, as another typical thing of the collar shape of the said reinforcement member 7, as shown to FIG. 3- (A)-FIG. 3- (E), for example, FIG. 2- (A)-FIG. 2- (E) Reinforcement formed in a shape having a wedge-shaped thin wall portion 50 that is thickened on the side of the reinforcement member 7a protruding perpendicularly to the longitudinal direction of the outer surface at a position facing the opening of the reinforcement member 7a shown in FIG. The structure of the member 7b can also be mentioned. The thin wall portion 50 is continuous in the longitudinal direction in FIGS. 3A to 3E. However, the thin wall portion 50 may be formed discontinuously in the longitudinal direction. You may form in the state protruded to the part.
[0031]
On the other hand, as a typical tubular member of the reinforcing member 7, for example, as shown in FIGS. 4- (A) to 4- (D), an inner surface 61 forming a passage through which the contents pass has a cross-sectional corner. A reinforcing member 7c formed into a shape can be mentioned. Fig. 4- (A) shows a cylindrical section with a triangular cross-section formed, and Fig. 4- (B) shows a rectangular section with a triangular section formed in the central section. FIG. 4- (C) shows a passage having a triangular section in the center of a substantially triangular prism, and FIG. 4- (D) shows a triangular section in the center at both ends of FIG. 4- (C). It is formed such that a substantially rectangular plate-shaped object cut out is inserted. 4 (A) to 4- (D) show the passage as a triangular cross section, this is shown as a representative example of a shape in which the inner surface 61 forming the passage has a cross section corner. Any polygonal shape such as a quadrangular shape, a pentagonal shape, or a hexagonal shape may be used. Further, various shapes can be adopted without regard to the shape of the embodiment shown in the drawings.
[0032]
As another typical tubular shape, for example, as shown in FIGS. 5- (A) to 5- (C), the tubular reinforcement shown in FIGS. 4- (A) to 4- (C) is used. There may be mentioned a reinforcing member 7d formed in a shape having a wedge-shaped thin wall portion 50 in which the reinforcing member 7c side is thickly formed perpendicular to the longitudinal direction of the outer surface of the member 7c. Further, the reinforcing member 7d shown in FIGS. 5- (A) to 5- (C) is provided with a thin wall portion 50 at one place in the longitudinal direction of the outer surface of the reinforcing member 7d. The reinforcing member 7e may be used, and in this case, the two thin wall portions 50, 50 are always located with respect to one thin wall portion 50 as shown in FIGS. 6 (A) to 6 (C). The other thin wall portion 50 needs to be provided at a position rotated 180 degrees with respect to the reinforcing member.
[0033]
The reason is that the thin wall portion provided on the reinforcing member is provided for the purpose of fixing the reinforcing member to the packaging bag, and the thin wall portion is provided on the heat bonding portion forming the groove-like non-thermal bonding portion on which the reinforcing member is provided. This is for thermally bonding the parts. Therefore, when two thin wall portions are provided in the reinforcing member, it is important that the other thin wall portion is in a positional relationship of 180 degrees with respect to the reinforcing member with respect to one thin wall portion.
[0034]
Next, the form which mounts said reinforcement member in the groove-shaped non-thermal-bonding part of a packaging bag is demonstrated.
7- (A) to FIG. 7- (C) are main part enlarged views showing a state in which a reinforcing member is attached to the groove-like non-thermal bonding part of the packaging bag according to the present invention of FIG. FIG. 7- (A) shows an embodiment in which the reinforcing member is attached to the groove-shaped non-thermally bonded portion, and is formed by the substantially bullet-shaped spout-forming heat bonded portion 6 of the packaging bag 1. The reinforcing member 7a is merely attached to the groove-shaped non-thermal bonding portion 5 in a tight state. FIG. 7- (B) is an embodiment showing another mounting form of the reinforcing member, and is a groove-shaped non-thermal bonding part 5 formed by the substantially bullet-shaped spout-forming thermal bonding part 6 of the packaging bag 1. The reinforcing member 7a is provided on the inner surface of the groove-like non-thermally bonded portion 5 and the outer surface of the reinforcing member 7a is thermally bonded by the thermal bonding portion 10. In this way, the inner surface of the groove-shaped non-thermal bonding portion 5 and the outer surface of the reinforcing member 7a are thermally bonded by the thermal bonding portion 10 to further increase the thickness than that provided as shown in FIG. In a stable state, the reinforcing member 7a can be attached to the groove-shaped non-thermal bonding portion 5. FIG. 7- (C) is one embodiment showing another mounting form of the reinforcing member, and is a groove-like non-thermal bonding part 5 formed by the substantially bullet-shaped spout-forming thermal bonding part 6 of the packaging bag 1. And a wedge-shaped thin wall portion 50 of the reinforcing member 7b is thermally bonded by the substantially bullet-shaped spout forming thermal bonding portion 6 so that the reinforcing member 7b is the groove-shaped non-thermal bonding portion 5. It is fixed to. FIG. 7- (C) shows the case where the reinforcing member 7b is thermally bonded to the thin wall portion 50 of the reinforcing member 7b by the substantially bullet-shaped spout-forming thermal bonding portion 6. FIG. As shown in B), the outer surface of the reinforcing member 7b and the inner surface of the groove-like non-thermal bonding portion 5 may be thermally bonded. Similarly, it is needless to say that the above-described various forms of reinforcing members can be attached to the packaging bag in any of the attachment forms described with reference to FIGS. 7- (A) to 7- (C).
[0035]
Since the packaging bag 1 configured in this manner has a relatively wide filling port sealing heat bonding portion A serving as a content filling port, an automatic filling and packaging machine is used from this portion in the same manner as a normal standing pouch. The contents can be easily filled and the filling port can be thermally bonded. The packaging bag 1 filled with the contents is self-supporting, is excellent in appearance, and is easy to handle. Moreover, since the part used as a pouring spout is provided so that it may protrude in the shape of an approximately, it turns out that it is a pouring spout at a glance.
[0036]
Further, when transferring the contents to another container, from the recumbent notch 8 serving as a starting end for recumbent provided on the edge of the substantially bullet-shaped spout-forming heat-bonding portion 6, The spout can be provided by tearing continuously to the recumbent cut 9 provided in a manner connected to the recumbent notch 8. After that, by holding the packaging bag 1 by hand and applying the portion where the reinforcing member 7 provided on the spout is attached to the mouth of another container, the spout is firmly fixed to the mouth of the container. Therefore, the contents can be transferred reliably and easily without the spout being clogged in the middle by simply lifting the packaging bag 1 and tilting it gradually. Furthermore, since the reinforcing member is formed in a shape having a cross-sectional corner on the inner surface serving as a passage through which the content passes, the direction of the content that first comes out of the spout is also constant, and is completely outside. The contents are not spilled.
[0037]
【The invention's effect】
The packaging bag of the present invention, as has been frequently described so far, is inexpensive, has good productivity, is easy to fill the contents, and is excellent in operability, reliability and ease of transfer. This has the effect of having a spout. In particular, when the content is a liquid material, the inner surface of the reinforcing member having a bowl shape or a tubular shape has a shape having a cross-sectional corner, thereby stabilizing the direction of the content when the content is poured out. And the contents are not spilled out from the first drop.
[Brief description of the drawings]
FIG. 1 is a plan view of an embodiment of a packaging bag according to the present invention.
FIG. 2 to FIG. 6 are examples showing the shape of a reinforcing member according to the present invention.
[Fig. 7]It is a principal part enlarged view which shows the state which attached the reinforcement member to the groove-shaped non-thermal-bonding part of the packaging bag concerning this invention of FIG.
8 is a layer configuration diagram of the packaging bag of FIG. 1. FIG.
[Explanation of symbols]
1 Packaging bag
2 bottom thermal bonding part
3, 4 Body heat bonding part
5 Groove-shaped non-thermal bonding part
6 Spout-forming thermal bonding part
7, 7a, 7b, 7c, 7d, 7e Reinforcing member
8 Notch for spout formation
9 Cut for forming spout
10 Thermal bonding part
50 Thin wall
60, 61 inside
70 outer layer
80 inner layer
90 laminate
A Heat bonding part for sealing the filling port

Claims (8)

In the packaging bag whose peripheral edge is sealed by the thermal bonding portion, a groove-shaped non-thermal bonding portion that communicates with the inside of the packaging bag is provided in the thermal bonding portion, and at least an inner surface is provided in the groove-shaped non-thermal bonding portion. A packaging bag having a flange-shaped reinforcing member made of a synthetic resin and having a cross-sectional corner portion formed in advance in a three-dimensional shape .   The reinforcing member is fixed to the packaging bag at the groove-shaped non-thermally bonded portion, the heat-bonded portion that forms the groove-shaped non-thermally bonded portion, or both portions. The packaging bag according to claim 1.   The packaging bag according to claim 1, wherein the thermal bonding portion provided with the groove-shaped non-thermal bonding portion is provided in a substantially single shape in the packaging bag.   The packaging bag according to claim 1, wherein the reinforcing member has a thin wall portion projecting perpendicularly to a longitudinal direction provided on an outer surface thereof.   There is a horizontal notch serving as a starting end for lying down the groove-shaped non-thermally bonded portion in a state where the reinforcing member is left at the peripheral edge of the thermal bonded portion provided with the groove-shaped non-thermally bonded portion. It is provided, The packaging bag in any one of Claims 1-4 characterized by the above-mentioned.   The packaging bag is composed of a laminate of at least two layers, an outer layer and an inner layer, and the groove is formed on the synthetic resin film constituting the outer layer of the laminate with the reinforcing member remaining when the packaging bag is formed. The packaging bag according to any one of claims 1 to 5, wherein a transverse cut is formed on the side of the non-thermally bonded portion.   The packaging bag according to claim 6, wherein the recumbent cut is engraved so as to be connected to the recumbent notch.   The packaging bag according to any one of claims 6 and 7, wherein the recumbent cut is at least one continuous or discontinuous cut line formed by a pulsed laser.

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