JPH11292092A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a packaging bag producible at low cost in excellent productivity with easiness for filling of contents ensured and to make spouting possible with operability, certainty and easiness in pouring of contents maintained excellent by a method wherein a groovelike non-heat-sealed part communicating with the inside of the packaging bag is provided at the inside of a heat-sealed part at the peripheral edge, and a synthetic resin reinforcing member is mounted on the groovelike non-heat- sealed part. SOLUTION: A groovelike non-heat-sealed part 5 communicating with the inside of a packaging bag 1 is formed out of a spout-forming heat-sealed part 6 formed by trimming approximately in a shelllike form at the upper corner part of the packaging bag 1 made up by bag-making into the form of standing pouch, and at the same time a reinforcing member 7 made up from a molded article is provided at the groovelike non-heat-sealed part 5. Therefore, on pouring contents into another container, a spout is formed with tearing made continuously from a transverse-cutting notch 8 to a transverse-cutting incision 9 provided being adjacent to the transverse- cutting notch 8. The reinforcing member 7 provided at the spout serves to settle the spout firmly to the mouth of another container with its mounted part fitted to the mouth of another container.

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, Moreover, it is an object of the present invention to provide a packaging bag having a spout excellent in operability, certainty, and easiness at the time of transfer.

[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 a synthetic resin reinforcing member is attached to the groove-shaped non-thermal bonding portion. It is characterized by having. 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.

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 the groove-shaped non-heat-bonded portion in a desired state.

[0007] The invention according to claim 3 is based on claim 1,
3. The packaging bag according to claim 2, 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.

[0008] Further, the invention according to claim 4 is based on claim 1,
3. The packaging bag according to any one of 2), wherein the reinforcing member has a gutter shape or a tubular shape, and at least an inner surface is formed in a shape having a cross-sectional corner. With this configuration, especially when the content is a liquid material, the inside of the gutter-shaped or tubular reinforcing member has a U-shaped cross-section, a semi-circular cross-section, or a corner having a circular cross-section. Compared to a shape having no content, it is possible to stabilize the direction of the content that first pours out, and it is not necessary to spill the first content that pours out.

[0009] The invention described in claim 5 is the first invention.
In the packaging bag according to any one of claims 2 and 4, the reinforcing member according to claim 4 has a thin wall portion provided on an outer surface thereof and protruding perpendicularly to a longitudinal direction. Is what you do. With this configuration, the thin-walled portion can be integrated with the heat-bonded portion by heat-bonding the thin-wall portion to the heat-bonded portion forming the non-heat-bonded portion of the packaging bag. Can be provided on the groove-shaped non-heat bonding portion. Further, by forming the thin wall portion into a wedge-shaped cross section in which the reinforcing member side is formed thick, the thin wall portion can be more easily integrated with the thermal bonding portion.

[0010] The invention according to claim 6 is the first invention.
3. In the packaging bag according to any one of the items 3, the groove-shaped non-thermally-bonded portion is traversed through the groove-shaped non-thermally-bonded portion in a state where the reinforcing member is left at a peripheral edge of the heat-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.
3. The packaging bag according to any one of 3, wherein the packaging bag is composed of at least a two-layer laminate of an outer layer and an inner layer, and when the packaging bag is formed into a synthetic resin film constituting the outer layer of the laminate. A cross cut for cutting the groove-shaped non-thermally bonded portion while leaving the reinforcing member is formed. 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 rigid molded article having a passage through which the contents pass can be used, but the direction of the contents is stabilized when the contents are poured out so that the contents do not spill out. In order to achieve this, it is necessary that the surface of the reinforcing member serving as a passage through which the content passes has a shape having a cross-sectional corner. 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.

The reinforcing member may have a thin wall perpendicular to the longitudinal direction of the reinforcing member on the outer surface of the reinforcing member (the surface opposite to the surface through which the contents pass). By providing such a thin wall portion, the reinforcing member can be easily attached to the non-heat-bonded portion, and the thin-wall portion is aligned with the heat-bonded portion forming the non-heat-bonded portion. By heat bonding, 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 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, Polyurethane, polyamide, or other semi-rigid or rigid synthetic resins can be used, but those which can be melted by heat with a resin having thermal adhesiveness used for the inner layer of a 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 6 are embodiments showing the shape of a reinforcing member according to the present invention, and FIG. FIG. 8 is a layer configuration diagram of the packaging bag of FIG. 1, wherein 1 is a packaging bag, 2 is a bottom thermal bonding portion, 3 and 4 are body thermal bonding portions, and 5 is a groove. -Shaped non-heat-bonded part, 6 is a spout-formed heat-bonded part, 7, 7a, 7b, 7c, 7d, and 7e are reinforcing members, 8 is a cutout for forming a spout, 9 is a cut for forming a spout, and 10 is a cutout for forming a spout. Glued part,
50 is a thin wall portion, 60 and 61 are inner surfaces, 70 is an outer layer, 80 is an inner layer, 90 is a laminated body, and A is a thermal bonding portion for sealing a 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. 8, 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 example of the gutter shape, for example, as shown in FIG. 2- (A) to FIG. 2- (E), an inner surface 60 forming a passage side through which contents pass is formed in a shape having a cross-sectional corner. Reinforcing member 7a. FIG. 2A shows a gutter shape in which a column is cut out in a V-shape in a longitudinal direction.
(B) is a V-shaped gutter shape, and FIG. 2- (C) is a column having a cross section of approximately three-quarters of a circle.
A notch is formed in a pentagonal shape including one side of a cross section of a three-quarter circle, and an opposing portion on the circumference of the cross section of the substantially three-quarter circle of the column is one side of the cross section of the substantially three-quarter circle. Gutter shape notched in the longitudinal direction so that it becomes a vertical side, FIG. 2- (D)
Is a gutter shape with one side cut out on one side of a pentagonal cylindrical body.
(E) has a gutter shape in which one corner of a hexagonal cylindrical body is cut out.

Other typical gutter shapes of the reinforcing member 7 include, for example, FIGS.
As shown in FIG. 2E, the side of the reinforcing member 7a protruding perpendicularly to the longitudinal direction of the outer surface at a position opposed to the opening of the reinforcing member 7a shown in FIGS. Reinforcing member 7b formed in a shape having wedge-shaped thin wall portion 50 formed in
Can also be cited. The thin wall portion 50 is shown in FIG.
(A) to FIG. 3- (E) show those continuous in the longitudinal direction, but they may be formed discontinuously in the longitudinal direction, or they may be formed so as to protrude partially in the longitudinal direction. It does not matter.

On the other hand, as a typical tubular member of the reinforcing member 7, for example, as shown in FIGS. Reinforcing member 7c formed in a shape having a portion. FIG. 4- (A) shows a triangular cross section formed at the center of a column, and FIG. 4- (B) shows a triangular cross section formed at the center of a substantially quadrangular prism. , FIG. 4-
FIG. 4C shows a triangular prism having a triangular cross section formed at the center, and FIG. 4D shows a triangular cross section at both ends in FIG. It is formed so that a substantially square plate-like object is fitted. Fig. 4-
In FIGS. 4A to 4D, the passage is shown as having a triangular cross-section, but this is shown as a typical example of a shape in which the inner surface 61 forming the passage has a cross-sectional corner. Yes, it may be an arbitrary polygonal shape such as a square shape, a pentagonal shape, and a hexagonal shape. In addition, various shapes can be adopted for the outer shape without being limited to the shape of the embodiment shown in the drawings.

As another typical tubular member, for example, as shown in FIGS.
-A shape having a wedge-shaped thin wall portion 50 in which the thickness of the reinforcing member 7c is formed perpendicularly to the longitudinal direction of the outer surface of the tubular reinforcing member 7c shown in FIGS. The formed reinforcing member 7d can be exemplified. 5A to FIG.
The reinforcing member 7d shown in (C) is provided with the thin wall portion 50 at one place in the longitudinal direction of the outer surface of the reinforcing member 7d, but the reinforcing member 7e provided at two places may be used. As shown in FIGS. 6 (A) to 6- (C), two thin wall portions 50, 50 are always provided for one thin wall portion 50 and the other thin wall portion 50 is provided for a reinforcing member. It must be installed at a position rotated 180 degrees.

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 provided on the heat bonding portion forming the groove-shaped non-thermal bonding portion on which the reinforcing member is provided. This is for thermally bonding the thin wall portion.
Therefore, when two thin wall portions are provided on the reinforcing member, it is important that one thin wall portion and the other thin wall portion have a positional relationship of 180 degrees with respect to the reinforcing member.

Next, an embodiment in which the above-mentioned reinforcing member is mounted on the groove-shaped non-heat-bonded portion of the packaging bag will be described. Fig. 7-
7A to 7C are cross-sectional views of the packaging bag according to the present invention shown in FIG. 1 taken along line XX. FIG. 7- (A) shows an embodiment in which the reinforcing member is mounted on the groove-shaped non-heat-bonding portion, and is a substantially shell-shaped spout-forming heat-bonding portion 6 of the packaging bag 1.
The reinforcing member 7a is attached to the groove-shaped non-thermal bonding portion 5 formed by
However, it is only mounted in a tight state.
FIG. 7- (B) is an embodiment showing another mounting mode of the reinforcing member, and is a groove-shaped non-thermal bonding portion 5 formed by a substantially bullet-shaped spout forming thermal bonding portion 6 of the packaging bag 1. Reinforcing member 7a
Is provided, and the inner surface of the groove-shaped non-heat-bonding portion 5 and the outer surface of the reinforcing member 7a are heat-bonded by a heat-bonding portion 10. By thermally bonding the inner surface of the groove-shaped non-thermal bonding portion 5 and the outer surface of the reinforcing member 7a with the thermal bonding portion 10 in this manner, it is more stable than that provided as shown in FIG. In this state, the reinforcing member 7a can be mounted on the groove-shaped non-heat bonding portion 5. FIG. 7- (C) is an embodiment showing another mounting form of the reinforcing member, and is a groove-shaped non-thermal bonding portion 5 formed by a substantially bullet-shaped spout forming thermal bonding portion 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 formed in the groove-shaped non-thermal bonding portion 5. It is fixed to. In FIG. 7- (C), the reinforcing member 7b is thermally bonded to the thin wall portion 50 of the reinforcing member 7b by the substantially shell-shaped spout forming thermal bonding portion 6, but FIG. As shown in B), the outer surface of the reinforcing member 7b may be thermally bonded to the inner surface of the groove-shaped non-thermal bonding portion 5. Similarly, it is needless to say that the above-described various types of reinforcing members can be mounted on the packaging bag in any of the mounting modes described with reference to FIGS. 7- (A) to 7- (C).

In the packaging bag 1 constructed as described above, the width of the heat sealing portion A for sealing the filling port serving as the filling port for the contents is relatively large. 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 and serving as a starting end for 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.

[0037]

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 addition, especially when the content is a liquid material, the inner surface of the gutter-shaped or tubular reinforcing member has a cross-sectional corner so that the direction of the content is stabilized when the content is poured out. This has the effect of preventing the contents from spilling out of the first drop.

[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. 6 is an embodiment showing a shape of a reinforcing member according to the present invention.

FIG. 7 is a cross-sectional view of the packaging bag according to the present invention shown in FIG. 1 taken along line XX.

FIG. 8 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, 7d, 7e Reinforcement member 8 Cutout for forming a spout 9 Notch for forming spout 10 Thermal bonding part 50 Thin wall part 60,61 Inner surface 70 Outer layer 80 Inner layer 90 Laminate A Thermal bonding part for filling port sealing

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[Procedure amendment]

[Submission date] April 13, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

Next, a more detailed description will be given with reference to an embodiment shown in the drawings. 1 is a plan view of one 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. 8 is an enlarged view of a main part showing a state in which a reinforcing member is attached to the non-heat-bonded portion of FIG. 1. FIG. 8 is a layer configuration diagram of the packaging bag of FIG. , 4 is the body thermal bonding part, 5
Is a groove-shaped non-heat-bonded portion, 6 is a spout-formed heat-bonded portion, 7, 7
a, 7b, 7c, 7d, 7e 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,
0 denotes a thin wall portion, 60 and 61 denote inner surfaces, 70 denotes an outer layer, 80 denotes an inner layer, 90 denotes a laminate, and A denotes a filling port sealing thermal bonding portion.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

Next, an embodiment in which the above-mentioned reinforcing member is mounted on the groove-shaped non-heat-bonded portion of the packaging bag will be described. Fig. 7-
FIGS. 7A to 7C are enlarged views 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 in FIG. FIG. 7A shows an embodiment in which the reinforcing member is mounted on the groove-shaped non-heat-bonding portion, which is formed by the substantially shell-shaped spout-forming heat-bonding portion 6 of the packaging bag 1. The reinforcing member 7a is simply mounted in a tight state on the groove-shaped non-heat bonding portion 5. FIG. 7- (B) is an embodiment showing another mounting mode of the reinforcing member, and is a groove-shaped non-thermal bonding portion 5 formed by a substantially bullet-shaped spout forming thermal bonding portion 6 of the packaging bag 1. A reinforcing member 7a is provided on the inner surface of the groove-shaped non-heat bonding portion 5 and the reinforcing member 7
The outer surface of “a” is thermally bonded at the thermal bonding portion 10. In this way, the inner surface of the groove-shaped non-thermally bonded portion 5 and the outer surface of the reinforcing member 7a are thermally bonded by the thermal bonding portion 10, so that the inner surface of the grooved non-thermally bonded portion 5 is further bonded as shown in FIG. The reinforcing member 7a is fixed to the groove-shaped non-heat bonding portion 5
Can be attached to FIG. 7- (C) is an embodiment showing another mounting form of the reinforcing member, and is a groove-shaped non-thermal bonding portion 5 formed by a substantially bullet-shaped spout forming thermal bonding portion 6 of the packaging bag 1. And a wedge-shaped thin wall portion 50 of the reinforcing member 7b is thermally bonded to the groove-shaped non-thermal bonding portion 5 by the substantially shell-shaped spout forming thermal bonding portion 6. It is fixed to. Fig. 7-
In (C), the reinforcing member 7b is replaced with the reinforcing member 7b.
7B, the thin wall portion 50 is thermally bonded by the substantially bullet-shaped spout forming thermal bonding portion 6, but as shown in FIG. 7- (B), the outer surface of the reinforcing member 7b and the groove-shaped May be thermally bonded to the inner surface of the non-thermally bonded portion 5. Similarly, the reinforcing members of the above-described various forms are also shown in FIGS.
It goes without saying that the packaging bag can be mounted in any of the mounting modes described in (C).

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Fig. 7

[Correction method] Change

[Correction contents]

7 shows a groove-shaped non-thermal bonding of the packaging bag according to the invention of FIG . 1;
It is a principal part enlarged view which shows the state which attached the reinforcement member to the part.

 ──────────────────────────────────────────────────の Continued from the front page (72) Inventor Satoshi Marugami 1-1-1 Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd.

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 reinforcing member made of synthetic resin is attached to the part. 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 thermal bonding portion provided with the groove-shaped non-thermal bonding portion is provided in a substantially rectangular shape. Packaging bag. 4. The packaging bag according to claim 1, wherein the reinforcing member has a gutter shape or a tubular shape, and at least an inner surface is formed in a shape having a cross-sectional corner. 5. The reinforcing member according to claim 4, further comprising a thin wall portion provided on an outer surface thereof and projecting perpendicularly to a longitudinal direction. The packaging bag according to any one of the above. 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 3, 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.
A synthetic resin film, which is composed of a laminate of layers and forms an outer layer of the laminate, traverses the groove-shaped non-heat-bonded portion while leaving the reinforcing member when it becomes a packaging bag. The packaging bag according to any one of claims 1 to 3, 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.