JPH11292094A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable smooth pouring without pulsation of liquid with operability, certainty and easiness maintained on pouring by a method wherein the section of a groovelike non-heat-sealed part communicating with the inside of a packaging bag is divided into two, and the divided section is fitted with a reinforcing member having corners. SOLUTION: A reinforcing member 7 is formed, e.g. approximately in a H-shape 7a by dividing the section of a groovelike non-heat-sealed part 5 of a packaging bag 1 at least into two with corners provided at the divided section that becomes a passage for letting contents pass therethrough. As the section in a larger size becoming the passage for contents of the reinforcing member 7a is formed in a shape having corners, it allows the direction of pouring to be stabilized when contents are poured out, preventing the contents from spilling to the outside. The section other than the divided section serving as the passage for contents functions as an air vent, preventing pulsation from occurring when the contents are poured out, and more stabilized pouring-out becomes possible.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging for refilling, which is used for hermetically packaging liquid, granular, powdery and other fluid contents and transferring the contents to another container when used. More particularly, the present invention relates to a refillable packaging bag having a spout capable of reliably and easily transferring contents without spilling the contents when the contents are transferred to another container.

[0002]

2. Description of the Related Art Heretofore, standing pouches which are self-supporting and have the characteristics of a three-dimensional container have been used as refillable packaging bags for hermetically packaging fluid contents such as liquids, granules and powders. Many are used. Also, to ensure that the contents can be easily and easily transferred to another container without spilling the contents outside, a spout opening is provided at the corner of the packaging bag,
A method has been adopted in which a portion serving as a small-diameter spout is provided at the upper part of the packaging bag. However, in the former method, the spout of the packaging bag is soft and the mouth of the container to be transferred is configured to be narrow, so that the user needs to be careful. In addition, in the latter method, the operability and reliability are improved to some extent compared to the former method, but the spout is likely to be blocked during transfer and the contents may be accidentally spilled out. It was a problematic method.

As a method for solving the above-mentioned problem, there is a method of attaching a separate pouring tool such as a plastic molded article to the upper part of the packaging bag. Although excellent, the cost of the spout is high and it is not easy to attach the spout and fill the contents, and it is not economically feasible to use the packaging bag with the spout as a transfer packaging bag. It could not be achieved from the manufacturing point of view.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and has as its object to provide a low-cost, high-productivity, easy-to-fill content, In addition to providing a packaging bag having a spout that is excellent in operability, reliability and easiness at the time of transfer, a packaging that can smoothly pour out without pulsation especially when the content is a liquid material. To provide bags.

[0005]

The present inventors have conducted various studies to solve the above problems, and as a result, the packaging bag according to the first aspect of the present invention has a peripheral edge sealed by a heat bonding portion. In the stopped packaging bag, a groove-shaped non-thermal bonding portion communicating with the inside of the packaging bag is provided in the thermal bonding portion, and the groove-shaped non-thermal bonding portion is divided into at least two sections and divided. A reinforcing member made of a synthetic resin having at least one cross section formed in a shape having a corner is mounted. With this configuration, the groove-shaped non-heat-bonded portion on which the reinforcing member is mounted serves as a spout. Further, since the spout is made rigid by the reinforcing member, the operability can be accurately inserted into the mouth of the container, and the beating can be performed, so that the contents do not spill outside. Furthermore, the contents can be reliably and easily transferred to the end without the spout being blocked during transfer. In particular, when the content is a liquid material, at least one cross section of the groove-shaped non-thermally-bonded portion can be used as an air port to prevent pulsation generated when the content is poured out. can do. Furthermore, since at least one of the divided cross sections of the groove-shaped non-thermally-bonded portion is formed in a shape having a corner, the direction at which the content is poured out can be stabilized, and other containers can be used. It is possible to prevent spilling outside when transferring to a different location.

According to a second aspect of the present invention, in the packaging bag according to the first aspect, the reinforcing member forms the groove-shaped non-heat-bonded portion or the groove-shaped non-heat-bonded portion. It is characterized by being fixed to the packaging bag at the bonding portion or at both of these portions. With this configuration, the reinforcing member can be provided in a state where the reinforcing member is firmly fixed to the groove-shaped non-thermally bonded portion.

[0007] The invention according to claim 3 is based on claim 1,
3. The packaging bag according to claim 2, wherein the reinforcing member has a tubular cross section. With this configuration, it is possible to prevent the outlet from which the content is poured out from being blocked, and to discharge the content at a constant flow rate without dimensional change in the cross section. There is also an advantage that attachment of the reinforcing member is simplified.

According to a fourth aspect of the present invention, in the packaging bag of the third aspect, the reinforcing member has a thin wall portion provided on an outer surface thereof and projecting perpendicularly to a longitudinal direction. It is characterized by the following. With this configuration, the thin wall portion is thermally bonded to the heat bonding portion forming the groove-shaped non-thermal bonding portion of the packaging bag, whereby the thin wall portion can be integrated with the heat bonding portion, thereby reinforcing the packaging bag. A member can be easily provided on the groove-shaped non-thermally bonded portion.

[0009] The invention described in claim 5 is the first invention.
5. The packaging bag according to claim 4, wherein the heat-bonded portion provided with the groove-shaped non-heat-bonded portion is provided in a substantially rectangular shape. With this configuration, since the spout portion protrudes from the packaging bag, the spout can be recognized at a glance, and the contents stored in the packaging bag can be transferred to another container or the like. When replacing, insert the spout into the mouth of another container, etc., and the contents can be poured out by groaning, further improving operability, reliability and ease, and spilling the contents outside. No, they can be relocated.

[0010] The invention according to claim 6 is the first invention.
5. The packaging bag according to any one of 5, wherein the groove-shaped non-thermally-bonded portion is provided, and the reinforcing member is left at a peripheral edge of the thermal-bonded portion. A horizontal notch serving as a starting end for performing the cutting operation. With this configuration, the starting end for providing the spout becomes clear, and a trigger for tearing can be given.

[0011] The invention according to claim 7 is the first invention.
6. In the packaging bag according to any one of 6, the packaging bag is composed of at least two layers of an outer layer and an inner layer, and when the packaging bag is formed on a synthetic resin film constituting the outer layer of the laminate. A cross cut for cutting the groove-shaped non-heat-bonded portion is formed while leaving the reinforcing member. With such a configuration, the packaging bag can be smoothly torn without resistance when tearing the packaging bag to provide the spout.

According to an eighth aspect of the present invention, in the packaging bag according to the seventh aspect, the horizontal cut is formed by being connected to the horizontal cut. With such a configuration, it is possible to smoothly tear from the transverse notch serving as the tearing start end to the transverse notch,
A spout can be easily provided.

[0013] The invention according to claim 9 is the invention according to claim 7,
8. The packaging bag according to any one of items 8, wherein the transverse cut is at least one continuous or discontinuous cut line by a pulsed laser. With this configuration, by selecting the wavelength of the pulse oscillation type laser, it is possible to cut transverse cuts only in the film constituting the outer layer.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The above-mentioned 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 heat bonding when the laminate is used as the packaging bag. High-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, One or more resins such as ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, or a resin-based resin sheet can be used, and the thickness thereof is 30 to 500 μm. Is appropriate.

The synthetic resin film used as the outer layer of the laminate constituting the main body of the packaging bag is excellent in mechanical, physical, chemical, etc. since it is a basic material constituting the packaging bag. Synthetic resins having the above properties can be used. For example, polyester-based, polyamide-based, polypropylene-based, polycarbonate-based, and polyacetal-based resins can be used. In addition, as a film using these resins, any one of an unstretched film or a stretched film stretched in a uniaxial or biaxial direction can be used, and the thickness of the film is defined as the strength as a basic material. Any thickness may be used as long as it can be held to the minimum necessary for rigidity, etc.If it is too thick, laser processing failure etc. will occur and tearability will decrease, and there is also a disadvantage that cost will increase, and conversely it is too thin And the strength, rigidity and the like are undesirably reduced. In the present invention, about 12 to 30 μm is appropriate for the above reasons. In addition, the film made of the synthetic resin was formed with a film coated with polyvinylidene chloride as needed, or a vapor-deposited layer of an inorganic substance such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, and zirconium oxide. The film may have a barrier property. In addition, since the synthetic resin film used as the outer layer is generally printed on the inner layer side of the synthetic resin film in many cases, the synthetic resin film used as the outer layer is printable. And a stretched film stretched in a uniaxial or biaxial direction is preferred.

Further, in the present invention, an intermediate layer may be provided between the inner layer and the outer layer, and the intermediate layer usually can sufficiently fulfill the function as a packaging bag only with the inner layer and the outer layer. It is provided when it is not possible. The functions include gas barrier properties, mechanical toughness, bending resistance,
It has stab resistance, impact resistance, abrasion resistance, cold resistance, chemical resistance, and the like, and achieves these final functions required as a packaging bag by providing an intermediate layer. Examples of the substrate used as the intermediate layer include metal foils such as aluminum, iron, copper, and tin, or polyolefins such as polyethylene terephthalate, polyamide, polyethylene, and polypropylene; polyvinyl chloride; polycarbonate; polyvinyl alcohol; Films of saponified propylene copolymer, ethylene-vinyl acetate copolymer, etc. or films coated with polyvinylidene chloride, or vapor deposition of inorganic substances such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide Or a film of polyvinylidene chloride or the like. Further, one or more of these base materials can be used in combination. In addition, as the thickness of the base material,
It is only necessary to satisfy the function required as a packaging bag, and it can be appropriately selected as needed.

Further, the laminate constituting the main body of the packaging bag of the present invention may be obtained by appropriately using the outer layer, the inner layer, or, if necessary, the intermediate layer by a known dry lamination method, T-die extrusion method or the like. It can be obtained by bonding. In the case where the T-die extrusion method is used, an anchor coating agent may be applied in advance to the side to be extruded as necessary for the purpose of improving adhesiveness.

Next, in the present invention, as a method of engraving a transverse cut when a packaging bag is formed on the synthetic resin film used as the outer layer, for example, a needle punch method for pressing a heated needle, an embossing method, Melting and perforating a film using a roll method, polishing roll method, grindstone, polishing tape, etc., hot-melt perforation method, physical perforation method using a knife, cutter, etc., laser beam processing, corona discharge, plasma discharge, etc. It can be performed by a method such as a method. In the present invention, in forming a transverse cut in the synthetic resin film used as the outer layer, the synthetic resin film may be used alone, or may be used as the inner layer in the outer layer or the resin having thermal adhesive property. A state of a laminated body composed of two layers obtained by laminating sheets formed into a film, or a state of a laminated body composed of at least three layers provided with the intermediate layer between the outer layer and the inner layer,
It may be engraved in any state, such as the state of a packaging bag using the laminated body, whereby a transverse cut can be formed in the synthetic resin film used as the outer layer.

In the present invention, the shape of the horizontal cut may be any shape such as a straight line, a curved line, a perforated line, a broken line, etc., and the number thereof may be one or more.
Further, it may be continuous or discontinuous. Further, the structure of the horizontal cut 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 cut part may be weakened to act as a cut of the packaging bag. .

In the present invention, as a method for forming a cut in the synthetic resin film used as the outer layer, a method in which a perforated cut is formed by 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 gas 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 the synthetic resin film used as the outer layer, the film used must absorb the laser oscillation wavelength. For example, when using a carbon dioxide laser, the wavelength of 10.6 microns of carbon dioxide laser light is easily absorbed selectively by a polyamide film (nylon # 6 film), and a linear low-density polyethylene or ethylene-vinyl acetate copolymer is used. Most of them are transmitted by a film mainly composed of Therefore, a film mainly composed of a linear low-density polyethylene or an ethylene / vinyl acetate copolymer is used as the inner layer having a thermal adhesive property, and a film made of a synthetic resin used as the outer layer is used as a film.
A two-layer laminate obtained by using an axially stretched polyamide film (nylon # 6 film) and laminating the two in combination is used, and this is irradiated with a carbon dioxide laser to perform laser processing. Notches can be selectively cut only in the axially stretched polyamide film (nylon # 6 film), and the notches are formed by melting a film mainly composed of linear low-density polyethylene or ethylene-vinyl acetate copolymer. The packaging bag can be teared very well without closing the cut. Further, the same result as described above can be obtained even when laser processing is performed by irradiating a carbon dioxide gas 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 formed in the synthetic resin film used as the outer layer.

Further, as a method of forming the horizontal cutout, for example, the cutout is easily formed by cutting a predetermined portion of the packaging bag using an I-shape, a V-shape, or another polygonal blade. be able to.

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, guaranteeing a reliable opening state in a portion serving as a spout of the packaging bag and giving the spout a rigidity, It is provided to prevent the contents from being spilled out, which can be accurately inserted into the mouth of the container or beat. As such a reinforcing member, a groove-shaped non-heat-bonded portion of the packaging bag is divided into at least two sections, and at least a divided section serving as a passage through which contents pass is formed into a shape having a corner. Certain molded articles can be used. By forming the surface of the reinforcing member, which becomes the passage through which the contents pass, into a shape having a corner in cross section, the direction in which the contents come out when the contents are poured out can be stabilized, and Spills can be prevented. Further, a section other than the divided section serving as a passage through which the content passes functions as an air port, and can prevent pulsation when the content is poured out, so that a more stable pouring can be obtained.

When the reinforcing member has a tubular cross section, a thin wall portion perpendicular to the longitudinal direction of the reinforcing member may be provided on the outer surface of the reinforcing member. By providing the thin wall portion, the thin wall portion is aligned with the thermal bonding portion forming the non-thermal bonding portion, and the thermal bonding portion is thermally bonded, so that the reinforcing member is groove-shaped non-thermal bonding. It can be easily attached to the packaging bag and 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 to be thick, the thin wall portion can be more easily fixed to the packaging bag.

Materials usable for such a reinforcing member include, for example, low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear (linear) low-density polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-propylene copolymer.ビ ニ ル vinyl acetate copolymer, ionomer resin, ethylene ─ acrylic acid copolymer, ethylene メ チ ル methyl acrylate copolymer, ethylene ─ methacrylic acid copolymer, polystyrene, acrylonitrile ─ butadiene ─ styrene copolymer, polyethylene terephthalate, Polyamide, polyurethane, or other semi-rigid or rigid synthetic resins can be mentioned, but those which can be melted by heat with a heat-adhesive resin used for the inner layer of the packaging bag and which can be fused to each other are preferable. is there. Further, the reinforcing member may be colored with a pigment or the like as necessary. The reinforcing member may be appropriately formed by a known injection molding method, a blow molding method, an extrusion method, a bending method (from a plate-like material), or the like.

Next, a method for manufacturing a packaging bag of the present invention, which is manufactured using the above-described laminate and reinforcing member, will be described. As the form of the main body of the packaging bag of the present invention, a three-sided seal type, a four-sided seal type, a standing pouch, a gusset type, an envelope pasted seal type, a pillow type and the like can be arbitrarily selected. There is no particular limitation as long as the structure and form of the spout for pouring out a certain content can be adopted.

Therefore, in the bag making of the packaging bag of the present invention,
Depending on the form of the main body portion, a known bag making machine can be used, and a portion serving as a spout and a reinforcing member, a notch, a notch, for example, a reinforcing member mounting device, a die cutting device, etc. The packaging bag of the present invention can be manufactured by incorporating a necessary processing device such as a notch engraving device into the bag making machine or by providing it on a separate line.

Next, a more detailed description will be given with reference to an embodiment shown in the drawings. FIG. 1 is a plan view of one embodiment of a packaging bag according to the present invention, FIGS. 2 to 4 are perspective views showing shapes of reinforcing members according to the present invention, and FIG. 5 is a groove shape of the packaging bag according to the present invention in FIG. FIG. 6 is a layer configuration diagram of the packaging bag of FIG. 1, in which a reinforcing member is attached to the non-heat-bonded portion of FIG. , 4 is the body thermal bonding part, 5
Is a grooved non-heat-bonded portion, 6 is a spout-formed heat-bonded portion, 7, 7
a, 7b, 7c are reinforcing members, 8 is a cutout for forming a spout, 9 is a cutout for forming a spout, 10 is a heat-bonded portion, 50 and 51 are thin-walled portions, 70 is an outer layer, 80 is an inner layer, and 90 is a laminate. Body, A shows a thermal bonding portion for sealing the filling port.

FIG. 1 is a plan view of an embodiment of a packaging bag according to the present invention. The packaging bag 1 is a bag whose main body is formed in a standing pouch shape composed of a trunk material and a bottom material. As shown in FIG. 6, an outer layer 70 composed of a 15 μm biaxially stretched nylon film (one-sided corona discharge treatment) and a 120 μm linear low-density polyethylene film (one-sided corona discharge treatment), as shown in FIG. And a laminated body 90 in which corona discharge treated surfaces are bonded to each other by a well-known dry lamination method using an inner layer 80 made of a two-component reactive polyurethane adhesive. The bottom of the packaging bag 1 is formed with a boat-shaped bottom heat bonding portion 2 and the body is formed with body heat bonding portions 3 and 4 at both ends of the body. Further, a spout formed by trimming a groove-shaped non-thermal bonding portion 5 communicating with the inside of the packaging bag 1 into a substantially shell shape at an upper corner portion (upper left portion in FIG. 1) of the packaging bag 1. A reinforcing member 7 formed by a molded product is provided on the groove-shaped non-heat-bonded portion 5 while being formed by the heat-bonded portion 6. In addition, the substantially bullet-shaped spout forming thermal bonding section 6
Cutouts 8, 8 are formed at positions opposite to the peripheral edge on the distal end side of the cylindrical portion, and cutouts 9 are formed on a line connecting the cutouts 8, 8. ing. In addition, the thermal bonding portion A for sealing the filling port provided at the peripheral portion connecting between the substantially shell-shaped spout forming thermal bonding portion 6 and the body thermal bonding portion 4 of the packaging bag 1 is provided in the packaging bag 1. In the bag making stage, the bag is not heat-bonded and is in an open state, and the contents are filled from this portion.

The reinforcing member 7 provided on the groove-shaped non-heat-bonding portion 5 is usually made of the same resin as the inner layer forming the main body of the packaging bag 1. As a typical embodiment of, for example, FIG.
4 are mentioned. The reinforcing member 7 shown in FIG. 2 divides the groove-shaped non-heat-bonded portion 5 of the packaging bag 1 into at least two cross sections, and has at least a divided cross section serving as a passage through which the contents pass, having a corner. Things. For example, FIG. 2A shows a reinforcing member 7a formed in a substantially H-shape. As shown in FIG. The substantially H-shaped outer surface of the member 7a is thermally bonded to the inner surface of the packaging bag 1 by a thermal bonding portion 10 and is fixed to the groove-shaped non-thermal bonding portion 5 of the packaging bag 1.
The cross section of the groove-shaped non-heat-bonded portion 5 is divided into two by the reinforcing member 7a, and the larger cross section of the two large and small cross sections formed by dividing into two is a passage through which the contents pass, and The cross section is configured to be a passage through which air passes. FIG. 2- (B) shows a reinforcing member 7a in which large and small V-shaped grooves are formed on opposing surfaces in the longitudinal direction of a quadrangular prism. As shown in FIG. In the groove-shaped non-heat-bonded portion 5 of the bag 1, the opposite surface in the longitudinal direction of the reinforcing member 7 a in which the large and small V-shaped grooves are not formed is the packaging bag 1.
Is thermally bonded to the inner surface of the package by a thermal bonding portion 10 and fixed to the groove-shaped non-thermal bonding portion 5 of the packaging bag 1. The cross section of the groove-shaped non-thermal bonding portion 5 has two V-shaped cross sections, large and small. The larger cross section is a passage through which the contents pass, and the smaller cross section is a passage through which the air passes. FIG. 2C shows a cross-section of the groove-shaped non-heat-bonding portion 5 of the packaging bag 1 formed into a substantially cross-sectional shape so as to divide the cross-section into four parts, which is also a reinforcing member 7a of the present invention. It is.

The reinforcing member 7 shown in FIG. 3 is formed in a tubular shape so as to divide the groove-shaped non-heat-bonded portion 5 of the packaging bag 1 into at least two cross sections, and at least a divided cross section which becomes a passage through which contents pass. Is formed in a shape having a corner. For example, FIG. 3- (A) shows a reinforcing member 7b in which a substantially hexagonal prism is formed with a through-opening having a triangular cross section and a pentagonal cross section in a cross section perpendicular to the longitudinal direction of the substantially hexagonal column.
As shown in (C), in the groove-shaped non-heat-bonded portion 5 of the packaging bag 1, the outer periphery of the reinforcing member 7 b is thermally bonded to the inner surface of the packaging bag 1 by the heat-bonded portion 10, and the groove-shaped portion of the packaging bag 1 is formed. Is fixed to the non-heat-bonded portion 5 of the first embodiment. The through-hole having a pentagonal cross section of the reinforcing member 7b serves as a passage through which contents pass, and the through-hole having a triangular cross section serves as a passage through which air passes. Fig. 3-
(B) shows another embodiment of the reinforcing member 7b, which is composed of two large and small triangles in place of the through-opening having a triangular cross section and a pentagonal cross section shown in FIG. This is a through-hole, which is also shown in Fig. 5-
The groove-shaped non-heat bonding portion 5 of the packaging bag 1 as shown in FIG.
In this case, by thermally bonding to the inner surface of the packaging bag 1, the packaging bag 1 can be fixed to the groove-shaped non-thermal bonding portion 5 of the packaging bag 1.

The reinforcing member 7 shown in FIG. 4 is formed in a shape having a thin wall portion perpendicular to the longitudinal direction of the outer surface of the tubular reinforcing member 7b shown in FIG. By forming the reinforcing member 7 provided with the thin wall portion in this manner, the packaging is performed only by heat bonding the thin wall portion to the heat bonding portion 6 forming the groove-shaped non-thermal bonding portion 5 where the reinforcing member 7 is provided. The reinforcing member 7 can be provided in the groove-shaped non-heat bonding portion 5 of the bag 1. For example, FIG.
FIG. 3A shows a tubular reinforcing member 7b of FIG.
A reinforcing member 7c having a thin wall portion 50 formed substantially in a straight line with a thin wall portion provided perpendicularly to the outer surface longitudinal direction of the outer surface of the packaging bag 1 as shown in FIG. Non-heat bonding part 5
In the above, the reinforcing member 7c is thermally bonded by the thermal bonding portion 6 forming the groove-shaped non-thermal bonding portion 5, and the reinforcing member 7c is fixed to the groove-shaped non-thermal bonding portion 5 of the packaging bag 1. FIG.
FIG. 3 (B) shows a tubular reinforcing member 7b of FIG. 3- (B) in which a through hole having two large and small triangular cross-sections and two thin wall portions provided perpendicular to the longitudinal direction of the outer surface of the reinforcing member 7b are substantially in a straight line. The reinforcing member 7c having the thin wall portions 50, 50 formed in the grooved non-thermal bonding portion 5 of the packaging bag 1 as shown in FIG. The reinforcing members 7c are thermally bonded by the thermal bonding portions 6, 6 forming the portion 5, and the reinforcing members 7c are fixed to the groove-shaped non-thermal bonding portions 5 of the packaging bag 1. FIG. 4- (C) shows a through hole having two large and small cross-section rectangles formed in a substantially quadrangular prism at a cross section perpendicular to the longitudinal direction of the substantially quadrangular prism. Two thin wall portions provided perpendicularly to the longitudinal direction of the outer surface of the quadrangular prism are formed substantially in a straight line, and the two thin wall portions are wedge-shaped thin walls having the substantially quadrangular prism side formed with a large thickness. Part 5
A reinforcing member 7c having the first and the 51st, and the thermal bonding for forming the groove-like non-thermal bonding portion 5 in the groove-like non-thermal bonding portion 5 of the packaging bag 1 as shown in FIG. The reinforcing members 7c are thermally bonded at the portions 6, 6, and the reinforcing members 7c are fixed to the groove-shaped non-thermal bonding portions 5 of the packaging bag 1. By forming the thin wall portion 51 in a wedge shape, the thin wall portion 51 can be more easily fixed to the packaging bag 1. 5 (D) to 5 (F), the embodiment in which the reinforcing member is fixed to the packaging bag with a thin wall portion has been described. May be fixed by heat bonding with the inner surface of the substrate, or may be fixed at both portions.

In the embodiment, the thin wall portion is shown as being continuous in the longitudinal direction. However, the thin wall portion may be formed discontinuously in the longitudinal direction, or may be formed so as to protrude partially in the longitudinal direction. It does not matter. Further, in the embodiment, the passage through which the air passes is described as small, and the passage through which the contents pass is described as large. However, the passage may be the same. Further, the shape of the passage through which the air passes and the passage through which the contents pass can be any shape as long as it has a cross-sectional corner.

In the packaging bag 1 thus configured, since the width of the heat sealing portion A for sealing the filling port serving as the filling port for the contents is relatively wide, automatic filling is performed from this portion in the same manner as a normal standing pouch. The contents can be easily filled by the packaging machine and the filling port can be thermally bonded. The packaging bag 1 filled with the contents is self-supporting, has excellent appearance, and is easy to handle. Further, since the portion to be the spout is provided so as to protrude in a substantially rectangular shape, the spout can be recognized at a glance.

When the contents are transferred to another container, the transverse cutout 8 provided at the edge of the substantially bullet-shaped spout forming heat bonding portion 6 serving as a starting end for transverse cutting is provided. Therefore, the spout can be provided by continuously tearing the transverse cut 9 provided in connection with the transverse cut 8. Then, 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 by simply lifting up the packaging bag 1 and gradually tilting it, without blocking the spout on the way. Further, since the reinforcing member has an inner surface serving as a passage through which the content passes, the inner surface is formed into a shape having a cross-sectional corner, so that the direction of the content that first emerges from the spout is also constant, and the No spillage of contents. Furthermore, by providing the air port, the contents can be poured out smoothly without pulsation.

[0035]

As described above, the packaging bag of the present invention is inexpensive, has good productivity, can be easily filled with contents, and has operability and certainty at the time of transfer. This has the effect of having a spout excellent in easiness. In particular, when the content is a liquid material, the effect is that the content can be poured out smoothly without pulsation.

[Brief description of the drawings]

FIG. 1 is a plan view of one embodiment of a packaging bag according to the present invention.

FIG. 2 ~

FIG. 4 is an embodiment showing a shape of a reinforcing member according to the present invention.

5 is an enlarged view of a main part showing a state in which a reinforcing member is attached to a groove-shaped non-heat-bonded portion of the packaging bag according to the present invention of FIG. 1;

FIG. 6 is a layer configuration diagram of the packaging bag of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Bottom thermal bonding part 3, 4 Body thermal bonding part 5 Groove-shaped non-thermal bonding part 6 Spout forming thermal bonding part 7, 7a, 7b, 7c Reinforcement member 8 Spout forming notch 9 Spout forming Notch 10 Thermal bonding part 50,51 Thin wall part 70 Outer layer 80 Inner layer 90 Laminate A Thermal bonding part for sealing filling port

Claims (9)

[Claims] 1. A packaging bag whose peripheral edge is sealed by a thermal bonding portion, wherein a groove-like non-thermal bonding portion communicating with the inside of the packaging bag is provided in the thermal bonding portion, and the groove-like non-thermal bonding portion is provided. A packaging bag, wherein a part is divided into at least two sections, and a reinforcing member made of a synthetic resin, in which at least one of the divided sections has a corner, is mounted. 2. The method according to claim 2, wherein the reinforcing member is the groove-shaped non-heat bonding portion,
The packaging bag according to claim 1, wherein the thermal bonding portion forming the groove-shaped non-thermal bonding portion, or both of these portions are fixed to the packaging bag. 3. The packaging bag according to claim 1, wherein the reinforcing member has a tubular cross section. 4. The packaging bag according to claim 3, wherein said reinforcing member has a thin wall portion provided on an outer surface thereof and projecting perpendicularly to a longitudinal direction. 5. 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 rectangular shape. Packaging bag. 6. A starting end for traversing the groove-shaped non-thermally bonded portion with the reinforcing member remaining at a peripheral edge of the heat-bonded portion provided with the groove-shaped non-thermally bonded portion. The packaging bag according to any one of claims 1 to 5, wherein a horizontal cutout is provided. 7. The packaging bag according to claim 1, wherein said packaging bag comprises at least an outer layer and an inner layer.
The grooved non-heat-bonded portion is formed in a state in which the reinforcing member is left when the packaging bag is formed on a synthetic resin film which is composed of a laminate of layers and forms an outer layer of the laminate. The packaging bag according to any one of claims 1 to 6, wherein a horizontal cut is formed in the packaging bag. 8. The packaging bag according to claim 7, wherein said horizontal cut is formed by being connected to said horizontal cut. 9. The packaging bag according to claim 7, wherein the transverse cut is at least one continuous or discontinuous cut line by a pulsed laser.