JP2000079952A - Packing bag with spouting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cause a nozzle section to be easily opened in a wide form, held in a stable manner and to enable the contents of high viscosity to be positively spouted up to the last point by a method wherein a mountain-shaped folding line and a valley- shaped folding line are arranged in this sequence from an inside of a packing bag toward a nozzle section formed while a plastic film being heat sealed. SOLUTION: A packing bag 1 is made such that its upper part is applied as a filling port 2, its upper corner part is provided with a nozzle part 3 and at the same time the extremity end of it is provided with an easy-opening processed section 4. Then, a V-shaped mountain-shaped folding line 5 and a truncated chevron-shaped valley folding line 6 are arranged in this order and directed toward a root section of the nozzle part 3 and the inside part of the packing bag 1 from a location near the root section. In the case that the contents of the packing bag 1 are spouted, an easy-opening processed section 4 is opened, thereafter the packing bag 1 is set up-side down. Then, the mountain-shaped folding line 5 is deformed under a state in which its width is made narrow and projected outwardly, and at the same time the valley- folding line 6 is deformed to be projected inwardly, resulting in that the nozzle section 3 is pushed wide in an outward direction to open and this opened state is stably held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to seasonings, cosmetics,
The present invention relates to a packaging bag with a discharging function provided with a nozzle portion for removing contents such as a detergent, and particularly to a packaging bag with a discharging function for removing contents having high viscosity.

[0002]

2. Description of the Related Art After being purchased, plastic bottles, glass bottles, or packaging bags used for seasonings, cosmetics, detergents, etc., which can be refilled, are easy to take out the contents and maintain a stable flow to the end. There is a need for something that can be taken out. As such a packaging bag, a packaging bag having a fold line at an opening (Japanese Patent Laid-Open No. 10-129,683) has been proposed.

[0003]

However, in the above-described packaging bag provided with a fold line in the opening, if a pressing force is applied to the packaging bag when taking out the contents after opening, the opening can be easily formed by the fold line. However, there is a problem that the opening state is not stable and the opening state after opening cannot be maintained. Further, when the pressing force on the packaging bag is weakened or stopped, the opening is narrowed or closed, which makes it difficult to pour out the contents.

Accordingly, it is an object of the present invention to open the nozzle portion of the packaging bag and open the nozzle portion to easily open the nozzle portion while stabilizing the opening state. It is an object of the present invention to provide a packaging bag that can stably and stably discharge contents to the end while maintaining a state, and is particularly suitable for discharging high-viscosity contents.

[0005]

[Means for Solving the Problems] In a packaging bag having a nozzle portion formed by heat-sealing a plastic film, a mountain fold line and a valley fold line extending from the root portion of the nozzle portion or the vicinity thereof to the inside of the packaging bag are formed by the nozzle from the inside of the packaging bag. A packaging bag with a pouring function, which is provided in the order of a mountain fold line and a valley fold line toward a part. 2. 2. The packaging bag with a pouring function according to 1, wherein a central mountain fold line is provided at the center of the nozzle portion so as to extend inward of the packaging bag beyond the nozzle portion. 3. 3. The packaging bag with a pouring function according to 2, wherein an auxiliary mountain fold line is provided at an acute angle from the upper end of the central mountain fold line toward the side end of the nozzle portion. 4. 4. The packaging bag with a pouring function according to 2 or 3, wherein an auxiliary valley fold line is provided on an extension of the central mountain fold line in a region between the mountain fold line and the valley fold line. 5. In a region between the mountain fold line and the valley fold line, a second portion from the side end of the mountain fold line or the vicinity thereof to the inside of the packaging bag.
Any one of 2 to 4, characterized in that a mountain fold line is provided.
A packaging bag with a pouring function according to the item. 6. 6. The packaging bag with a pouring function according to 5, wherein the valley fold line is formed in a substantially S shape, and the second mountain fold line is provided in a substantially S shape substantially parallel to the valley fold line. 7. 7. The packaging bag with a pouring function according to any one of claims 1 to 6, wherein the mountain fold line and the valley fold line are provided so as to be in contact with each other at or near the root of the nozzle portion. 8. 8. The packaging bag with a pouring function according to any one of 2 to 7, wherein the central mountain fold line is constituted by three lines, and the lower ends of the central mountain fold lines on both sides are curved outward. . 9. In a packaging bag having a nozzle portion formed by heat-sealing a plastic film, a center mountain fold line is provided at the center of the nozzle portion, inward of the packaging bag beyond the nozzle portion, and from the upper end of the center mountain fold line. A packaging bag with a pouring function, wherein a mountain fold inclined line is provided from the lower end of the central mountain fold line at an acute angle toward the side end of the nozzle portion. 10. 10. The packaging bag with a pouring function according to 9, wherein the fold slope is a mountain fold slope. 11. 10. The packaging bag with a pouring function according to 9, wherein the fold slope is a valley fold slope. 12. In a packaging bag having a nozzle portion formed by heat-sealing a plastic film, a bulging portion is provided at the center of the nozzle portion, and inside the bulging portion, from the root portion of the nozzle portion or from the vicinity thereof to the inside of the packaging bag. A packaging bag with a pouring function, characterized by having a mountain fold line heading.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The material of the plastic film used for the packaging bag of the present invention is not particularly limited. Examples of a plastic material suitable for forming a plastic film include, for example, crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline poly-4-methylpentene-1, low-, medium-, Alternatively, high-density polyethylene, ethylene-vinyl acetate copolymer (E
VA), ethylene-ethyl acrylate copolymer (EE
A), ion-crosslinked olefin copolymer (ionomer)
Polyolefins such as polystyrene and styrene-butadiene copolymer; aromatic vinyl copolymers such as polyvinyl chloride and vinylidene chloride resin; acrylonitrile-styrene copolymer; acrylonitrile-styrene-butadiene copolymer Nitrile polymers such as polymers; polyamides such as nylon 6, nylon 66, para- or meta-xylylene adipamide; polyesters such as polyethylene terephthalate and polytetramethylene terephthalate; various polycarbonates; polyacetals such as polyoxymethylene Thermoplastic resin. A plastic film made of these materials is used after being unstretched, uniaxially stretched, or biaxially stretched.

[0007] The plastic film used in the packaging bag of the present invention can be composed of a single layer of these plastic films or a laminate of two or more types.
One or two or more of these plastic films can be bonded to a metal foil such as aluminum, paper, cellophane, or the like. As a preferred plastic film, for example, a stretched nylon film as an outer layer, a low-density polyethylene, a two-layer structure having a polyolefin film such as polypropylene as an inner layer, a stretched polyester film as an outer layer, a two-layer structure having a polyolefin film as an inner layer, and Among these, a three-layer film or the like in which a metal foil such as aluminum is laminated between outer layer films, and the like. In the production of these laminated films, an adhesive or an anchoring agent is interposed between layers as necessary. You can also.

[0008] The layer structure of the plastic film is selected according to the properties of the contents to be filled in the packaging bag. For example, when low cost is required as in the case of a packaging bag for a refillable detergent, two layers are required. When a laminated film having a layer configuration is used and storage stability is required as in a packaging bag for seasonings, a laminated film having a three-layer configuration or more including an aluminum foil may be used.

Further, in the packaging bag of the present invention, a nozzle portion is provided above the packaging bag, and this nozzle portion is preferably provided at a corner above the packaging bag as shown in FIG. It may be provided in the upper central part.
The shape and dimensions of the nozzle portion may be appropriately set according to the properties of the contents to be poured and the dimensions of the packaging bag.

[0010] The packaging bag of the invention described in claims 1 to 8 of the present application (hereinafter referred to as "first invention") has a mountain fold line (packing) extending from the base of the nozzle portion or the vicinity thereof to the inside of the packaging bag. A fold line that is convex toward the outside of the bag and a valley fold line (a fold line that is convex toward the inside of the package) are arranged in the order of a mountain fold line and a valley fold line from the inside of the package toward the nozzle. However, the mountain fold line and the valley fold line are provided on at least one surface, preferably both surfaces, of the nozzle portion. By providing the mountain fold line and the valley fold line, when the packaging bag is opened, the outward bias of the mountain fold line and the inward bias of the valley fold line work, so that the center of the nozzle portion is outward. The nozzle protrudes, the width of the nozzle is reduced by approaching both sides of the nozzle, and the center of the nozzle is expanded. The nozzle is opened only by this opening operation, and the opened state is maintained after the opening.

That is, by providing the mountain fold line and the valley fold line, when the packaging bag is opened and the contents are poured out,
Depending on the pressing force on the packaging bag and the weight of the contents in the packaging bag,
Outward deformation and distortion occur near the base of the nozzle of the packaging bag. And deformation near the base of the nozzle of the packaging bag,
The acting force due to the distortion sequentially acts on the mountain fold line and the valley fold line, and the mountain fold line protrudes to the outside of the packaging bag in a state where the width is narrow, while the valley fold line is inward in a state where the width is narrow. Protruding into
Since the acting force concentrates on the nozzle part, the nozzle part is inverted and protrudes outward, it is easily pushed outward and opened, and the open state is maintained without closing, and stable pouring is performed. State can be maintained. (See Fig. 4)

As described above, when the packaging bag is opened, the center of the nozzle portion is pushed out and the width of both sides is reduced. Therefore, the width of both sides of the nozzle portion is made larger than the inner diameter of the mouth of the refill container in advance. The opening area can be increased. still,
The shape of the mountain fold line and the valley fold line in the first invention of the present application is not particularly limited, and for example, a shape such as a V-shape, a U-shape, or a parabolic shape can be adopted.

Further, the packaging bag according to the first aspect of the present invention is provided with a center fold line at the center of the nozzle portion, inward of the packaging bag beyond the nozzle portion, so that the fold line is formed at the time of opening. Due to the synergistic action with the valley fold line, the packaging material adjacent to the central mountain fold line is inverted and protrudes outward (see FIG. 2), so that the nozzle portion can be more easily and reliably expanded. Also, bending of the nozzle portion is prevented.

Further, the packaging bag according to the first invention of the present application is provided with an auxiliary mountain fold line which forms an acute angle from the upper end (opening side end) of the central mountain fold line toward the side end of the nozzle portion. Further, it is possible to further easily push and expand the nozzle portion.

In the packaging bag according to the first aspect of the present invention, an auxiliary valley fold line is provided on an extension of the central mountain fold line in a region defined by the mountain fold line and the valley fold line, so that the package bag can be formed into a package bag. The pressing force and the acting force due to the self-weight of the contents in the packaging bag are efficiently transmitted from the mountain fold line to the valley fold line, and the valley fold line is securely folded, making it easier to push and spread the nozzle portion. can do. This auxiliary valley fold line is usually formed so as to be continuous with the central ridge fold line on an extension of the central ridge fold line, but may be formed discontinuously with the central fold line. Further, the auxiliary valley fold line may be configured to be in contact with the adjacent mountain fold line and the valley fold line, or may be configured not to be in contact. In order to sharpen the pushing and spreading of the nozzle portion, it is preferable to form the auxiliary valley fold line so as to be continuous with the central mountain fold line and to be in contact with the valley fold line but not to be in contact with the mountain fold line inside the packaging bag. .

In the packaging bag according to the first invention of the present application, in a region defined by the mountain fold line and the valley fold line, a second mountain fold line extending inward from the side end of the mountain fold line or the vicinity thereof. Can be provided. By providing the second mountain fold line, the angle of the inclined surface formed between the mountain fold line and the valley fold line at the time of opening of the nozzle portion is increased (to a steep slope), and the valley formed by the valley fold line is formed. Deepen the formation,
Pushing and spreading of the nozzle portion can be made reliable.
In addition, by forming the mountain fold line in this way, the strength of the nozzle portion is improved, and the mountain fold line and the valley fold line are formed by external force when transporting or storing the contents after filling the packaging bag. Deformation to the opposite shape can be prevented.

The shape of the valley fold line provided in the packaging bag of the first invention of the present application is preferably formed in a gentle S-shape as seen in FIG. Further, it is preferable that the second mountain fold line is also formed in an S-shape similarly to the valley fold line. In this manner, by forming the valley fold line and the second mountain fold line in a gentle S-shape, the nozzle portion swells without difficulty, so that it is easy to push and expand, and the length of the valley fold line becomes longer, so that the nozzle portion becomes longer. Increases in cross-sectional area, and the time required to pour out the contents can be reduced.

In the packaging bag of the first invention of the present application, as shown in FIGS. 7 to 9, it is preferable that the mountain fold line and the valley fold line are formed so as to be in contact with each other at or near the base of the nozzle portion. By concentrating the mountain fold line and the valley fold line at one location at the root of the nozzle in this way, the contact point between the mountain fold line and the valley fold line acts as an inflection point in the formation of the nozzle when the nozzle is opened. Further, it is possible to further easily push and expand the nozzle portion. Further, it is more preferable that the second mountain fold line be similarly concentrated at substantially the same location.

In the packaging bag of the first invention of the present application, as shown in FIG. 9, the central mountain fold line is constituted by three lines, and the lower ends of the central mountain fold lines on both sides are bent outward. it can. It is particularly preferable that the lower end portion of the central mountain fold line is formed so as to be substantially perpendicular to the valley fold line as shown in FIG. By adopting such a configuration, the cross-sectional area of the nozzle portion is increased, and at the time of opening, the mountain fold deformation due to the central mountain fold line on both sides reaches the valley fold line at an acute angle, and the valley folds over the valley fold line. Impairing the fold deformation can be prevented. The packaging bag of the first invention of the present application does not become bulky when stacked and transported or stored, can prevent collapse of the load, and does not require an extra space.

The packaging bag according to the invention described in claims 9 to 11 of the present application (hereinafter, referred to as "second invention") is provided at the center of the nozzle portion, at the center of the packaging bag inward beyond the nozzle portion. A mountain fold line is provided, and a mountain fold inclined line is provided from the upper end of the central mountain fold line, and a fold inclined line is provided from the lower end of the central mountain fold line at an acute angle toward the side end of the nozzle portion. However, the central mountain fold line, the mountain fold inclined line, and the fold inclined line are provided on at least one surface, preferably both surfaces, of the nozzle portion.

By providing the central mountain fold line, the mountain fold inclined line, and the fold inclined line, when the packaging bag is opened and the contents are poured out, the pressing force on the packaging bag, the content in the packaging bag, Deformation of the bag near the nozzle due to its own weight.
Distortion occurs, but this deformation or the acting force of the distortion acts on the fold slope line, the central mountain fold line, and the mountain fold slope line sequentially, concentrating on the nozzle part, narrowing its width, and easily forming the nozzle part. The contents are easily taken out while being pushed and spread instantly to prevent the contents from being bent, so that the contents can be easily and surely taken out. In particular, due to the mountain fold inclined line on the tip end side of the nozzle portion, the opening is further reduced in width, easily expanded widely, the opening state is stabilized, the opening state is maintained without blocking, and the opening state is stabilized. The state of dispensing can be maintained.

Further, in the packaging bag according to the second aspect of the present invention, when the folding inclined line provided at the lower end of the central mountain folding line is a mountain folding inclined line, the action of the deformation or distortion is directly applied to the central mountain folding line. It works on the fold line, narrows the width of the nozzle part and instantaneously pushes and expands it, making it easy and reliable to take out the contents while preventing bending. Further, in the packaging bag according to the second invention of the present application, if the fold inclined line provided at the lower end of the central mountain fold line is a valley fold inclined line, the valley fold inclined line protrudes inward of the packaging bag, and the nozzle portion Is reversed, the central mountain fold line protrudes outward, the width of the nozzle portion is reduced, and the nozzle portion is expanded immediately, so that the contents can be easily taken out while reliably preventing the bend, and the content is easily and reliably performed. The packaging bag of the second invention of the present application is not bulky when stacked and transported or stored, can prevent collapse of the load, and does not require an extra space.

The invention described in claim 12 of the present application (hereinafter referred to as “the invention”)
In the packaging bag of the "third invention"), a bulging portion is provided at the center of the nozzle portion, and a mountain fold line from the root portion of the nozzle portion or the vicinity thereof to the inside of the packaging bag is provided inside the bulging portion. The bulging portion and the mountain fold line are provided on at least one surface of the nozzle portion, preferably on both surfaces. By providing the bulging portion and the mountain fold line, when the packaging bag is opened and the contents are poured out, the pressing force on the packaging bag, the base of the nozzle portion of the packaging bag due to the weight of the contents in the packaging bag, and the like. Outward deformation and distortion occur near the part. Due to the action of this deformation or distortion, the mountain fold line protrudes outward of the packaging bag, the bottom of the bulge protrudes inward, and the packaging material of the bulge reverses and protrudes outward to further expand. , While preventing bending
Since the bulging portion is more easily pushed and expanded, the opening state is stable, the opening state is maintained without closing, and the stable pouring state can be maintained, and the contents can be more easily poured out. It is performed reliably.

The mountain fold line, valley fold line, central mountain fold line, auxiliary mountain fold line, auxiliary valley fold line and second mountain fold line of the above-described packaging bag of the first invention, and the central mountain of the packaging bag of the second invention. In order to provide the fold line, the mountain fold slope line, the fold slope line, the bulging portion of the packaging bag of the third invention, and the mountain fold line, the plastic film constituting the packaging bag is heated by heating or high-frequency heating. It is preferable to form the tool by embossing, but it is also possible to heat the plastic film before bag making and emboss the jig having a desired shape. These fold lines may be formed as continuous lines, or may be formed as discontinuous lines. However, in order to easily and surely expand the nozzle portion of the packaging bag, the fold lines are continuous. Preferably, it is composed of lines.

Further, the nozzle portion of the packaging bag according to the first to third inventions may be provided with an easy-opening processing portion for facilitating opening of the packaging bag. Examples of such an easy-opening processing portion include an I-type and a V-type notch formed in the nozzle portion, perforations and scores crossing the nozzle portion, and other thinning processing portions. Examples include laser processing, machining with a blade, a grindstone, and the like, and electric discharge machining such as corona discharge and plasma discharge. The shape of the packaging bag of the present invention is not particularly limited, and examples thereof include a three-sided or four-sided sealed flat bag, a standing pouch, and the like.

Next, the packaging bag of the present invention will be described with reference to the drawings.
Although described in more detail, these specific examples do not limit the content of the present application. 1 is a front view showing a first embodiment of the packaging bag of the first invention of the present application, FIG. 2 is a schematic cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a situation when the packaging bag of FIG. FIG. 4 is a schematic cross-sectional view taken along line BB of FIG. This packing bag (1) has a filling port (2) above it.
A nozzle portion (3) is provided at an upper corner portion, and an easy-opening portion (4) is provided at a tip end portion of the nozzle portion (3). Then, a V-shaped mountain fold line (5) extending from the base of the nozzle portion (3) to the inside of the packaging bag (1) and a c-shaped portion extending from the vicinity of the base to the inside of the packaging bag (1). The letter-shaped valley fold line (6) is sequentially provided from inside the packaging bag (1) toward the nozzle portion (3).

At the center of the nozzle portion (3), a central mountain fold line (7) composed of three straight lines consisting of a long straight line at the center and a short straight line at both ends is provided at the center of the nozzle portion (3). Over 3), toward the inside of the packaging bag (1),
It is provided toward the C-shaped valley fold line (6). Further, the nozzle portion (3) is formed with a straight auxiliary mountain fold line (8) at an acute angle from the upper end of the central mountain fold line (7) toward both side ends of the nozzle portion (3). Each is provided. In this packaging bag (1), the central mountain fold line (7) composed of three straight lines is provided in the nozzle portion (3), so that the central portion of the nozzle portion (3) can be more easily pushed and spread. Since the nozzle portion (3) is prevented from being bent while being reliably performed, it is possible to stably and quickly pour even the contents having high viscosity. In addition, since the nozzle portion (3) is provided with linear auxiliary mountain fold lines (8) which form an acute angle from the upper end of the central mountain fold line (7) and are directed to both end portions, the nozzle portion (3) 3) It becomes possible to further easily push and expand the vicinity of the pouring tip. That is, by providing the above-mentioned three central mountain fold lines (7) and auxiliary mountain fold lines (8) in the nozzle portion (3), the opened nozzle portion (3) and the vicinity of the tip thereof are illustrated in FIG. As shown by the arrow in FIG. 2, the width can be easily reduced, and the opening can be greatly expanded.

When pouring out the contents using the packaging bag (1), the easy-opening section (4) provided at the tip of the nozzle section (3) is opened, and as shown in FIG. Then, the contents are poured out by inserting the nozzle part (3) into another refill container (10) such as a plastic bottle with the packaging bag (1) turned upside down. At this time, the vicinity of the base of the nozzle portion (3) is deformed or distorted outward due to the pressing force on the packaging bag (1) and the weight of the content, and first, the base of the nozzle portion (3) is obtained. The V-shaped mountain fold line (5) provided from the portion toward the inside of the packaging bag (1) is deformed so as to protrude outward in a state where the width is narrow. On the other hand, the nozzle part (3)
The C-shaped valley fold line (6) provided from the vicinity of the base portion toward the inside of the packaging bag (1) is deformed so as to protrude inward in a state where the width becomes narrow. Then, as shown in FIG. 4, due to the acting force due to the deformation of the mountain fold line (5) and the valley fold line (6), the nozzle portion (3) easily moves outward with the valley fold line (6) as a base line. It is pushed out and opened.

As the contents are discharged from the packaging bag (1) to another refill container (10), the contents of the packaging bag (1) decrease, and the pressing force on the packaging bag, The acting force of the deformation and distortion due to the weight of the contents in the package is reduced. But,
The nozzle portion (3) of the packaging bag (1) is in contact with the mouth of the refill container (10), and the valley fold line (6) protrudes inward with the width reduced, and the central mountain fold line. Since (7) keeps a state of protruding outward, the opening state of the nozzle portion (3) is maintained and does not close.

FIG. 5 is a view showing a second embodiment of the packaging bag according to the first invention of the present application, in which the nozzle portion (3) is opened, and the basic configuration of this packaging bag (1) is as follows. It is the same as the packaging bag of the first embodiment shown in FIGS. 1 to 4, and the same components are denoted by the same reference numerals. In this example, from the vicinity of the base of the nozzle portion (3) toward the inside of the packaging bag (1),
That is, a valley fold line (6) is provided in a V-shape downward. Also, all the central mountain fold lines (7) formed of three straight lines provided in the nozzle portion (3) are provided so as to be in contact with the V-shaped valley fold line (6). Therefore, as in the case of the first embodiment shown in FIGS. 1 to 4, this packaging bag can stably and quickly pour out even contents having high viscosity.

FIG. 6 is a partially enlarged view showing a third embodiment of the packaging bag of the first invention of the present application, and shows a state where the nozzle portion (3) is opened. The basic configuration of this packaging bag (1) is shown in FIGS.
The packaging bag of the first embodiment shown in FIG. 4 and the second bag shown in FIG.
This is the same as the packaging bag of the embodiment, and the same components are denoted by the same reference numerals. In the packaging bag (1), a mountain fold line (5) and a valley fold line (6) are provided from the base of the nozzle portion (3) toward the inside of the packaging bag (1), that is, downward. ing. Further, the mountain fold line (5) and the valley fold line (6) are not similar to each other, but are each composed of three straight lines, and the upper end thereof is provided discontinuously with the root of the nozzle portion (3). . Further, a second auxiliary mountain fold line (9) is provided from both ends of the bottom of the valley fold line (6) to the center line of the central mountain fold line (7). Therefore, this packaging bag is also stable and quick even with high-viscosity contents, like the packaging bag of the first embodiment shown in FIGS. 1 to 4 and the packaging bag of the second embodiment shown in FIG. Can be poured out.

FIG. 7 is a partially enlarged view showing a fourth embodiment of the packaging bag of the first invention of the present application, and shows a state where the nozzle portion (3) is opened. The basic configuration of the packaging bag (1) is the same as the packaging bag of each of the above embodiments, and the same components are denoted by the same reference numerals. In this example, a V-shaped valley fold line (6) and a U-shaped fold line are formed from the base portion (14) of the nozzle portion (3) toward the inside of the packaging bag (1), that is, downward. A mountain fold line (5) is provided. The valley fold line (6) and the mountain fold line (5) are provided so as to be in contact with each other at the base portion (14) of the nozzle portion (3). Further, all of the central mountain fold lines (7) formed of three straight lines provided in the nozzle portion (3) are formed so as to be in contact with the V-shaped valley fold line (6). In a region defined by the V-shaped valley fold line (6) and the U-shaped ridge fold line (5), an auxiliary valley fold line ( 16) is provided so as not to contact the U-shaped mountain fold line (5). Further, from both side ends of the mountain fold line (5), inward second mountain fold lines (15) are formed. In this packaging bag, when the contents are poured out by opening the nozzle portion (3), the internal pressure in the bag increases due to the pressing force and the weight of the contents, and the mountain fold line (5)
The neighborhood rises from the inside of the bag, and the second from the mountain fold line (5)
The area extending to the mountain fold line (15) is the second mountain fold line (1).
5), the region from the second mountain fold line (15) to the valley fold line (6) is depressed in the opposite direction, and the second mountain fold line ( 15) The area is reversed and protrudes outward. At this time,
The auxiliary valley fold line (16) rises from the mountain fold line (5) to the second mountain fold line (15), and rises to the second mountain fold line (1).
5) Since the valley fold line (6) is inclined deeply from the vicinity to the valley fold line (6), and the valley fold line (6) also forms a deep valley, the valley fold is maintained even when the contents are poured out and the internal pressure decreases. Further, in the vicinity of the protruding second mountain fold line (15), even if the contents are poured and the internal pressure is reduced, the protruding portion is kept outward, so that the opening state of the nozzle portion (3) is not changed. It is kept. Therefore,
As with the packaging bags of the above embodiments, this packaging bag can stably and quickly pour out even contents having high viscosity.

FIG. 8 is a partially enlarged view showing a fifth embodiment of the packaging bag of the first invention of the present application, and shows a state where the nozzle portion (3) is opened. The basic configuration of the packaging bag (1) is the same as the packaging bag of each of the above embodiments, and the same components are denoted by the same reference numerals. In this example, two V-shaped valley fold lines (6) are formed on both sides of a central mountain fold line (7) composed of three straight lines.
And the second mountain fold line (15)
The configuration is the same as that of the fourth embodiment shown in FIG. 7 except that it is formed inward from the vicinity of the side end of the mountain fold line (5) so as not to contact the character-shaped mountain fold line (5). Have. Therefore,
As with the packaging bags of the above embodiments, this packaging bag can stably and quickly pour out even contents having high viscosity.

FIG. 9 is a partially enlarged view showing a sixth embodiment of the packaging bag of the first invention of the present application, in which the nozzle portion (3) is in an unopened state. The basic configuration of the packaging bag (1) is the same as the packaging bag of each of the above embodiments, and the same components are denoted by the same reference numerals. In this example, a gentle S-shaped valley fold line (6) and a bend are formed from the base portion (14) of the nozzle portion (3) toward the inside of the packaging bag (1), that is, downward. A mountain fold line (5) consisting of a continuous curve is provided. Further, the second mountain fold line (15) is formed in a gentle S-shape substantially parallel to the valley fold line (6). Two lower end portions (18) on both sides of the central mountain fold line (7) composed of three straight lines are bent outward so as to be substantially perpendicular to the valley fold line (6). . An auxiliary valley fold line (16) is provided so as not to be in contact with the mountain fold line (5) on an extension of the middle central mountain fold line (7), and a sewing machine is provided at the tip of the nozzle portion (3). Easy opening by eye (4)
Is provided. In this packaging bag, the nozzle portion can be pushed and spread very easily at the time of opening, and the high-viscosity contents can be stably and quickly poured out similarly to the packaging bags of the above embodiments.

FIG. 10 is a partially enlarged view showing an example of the packaging bag of the second invention of the present application, showing a state in which the nozzle portion (3) is opened, and FIG. 11 is a schematic sectional view taken along line CC of FIG. It is a figure, and the same code | symbol is attached | subjected about the structure same as the said 1st invention of this application. As shown in FIG. 10, a central mountain fold line (1) extending inward of the packaging bag beyond the nozzle portion (3) at the center of the nozzle portion (3) of the packaging bag (11).
7) is provided. Also, the angle of the mountain fold inclined line (12) from the upper end of the central mountain fold line (17) and the angle of the fold inclined line (13) from the lower end of the central mountain fold line (17) are formed at an acute angle. Is provided toward the side end portion. By providing the mountain-folding inclined line (12), the opened nozzle part (3) and the vicinity of the tip of the spout are pushed and spread as shown by the arrow in FIG. (3) and the vicinity of the opening can be expanded. The mountain fold inclined line (12) and the fold inclined line (13) may be provided toward the root end of the nozzle portion (3).

In pouring out the contents using the packaging bag (11), the packaging bag (11) is turned upside down and other plastic bottles or the like are placed in the same manner as the above-mentioned packaging bags of the first invention of the present application. The contents are discharged by inserting the nozzle part (3) of the packaging bag (11) into the refill container. At this time, deformation and distortion occur near the root of the nozzle portion (3) due to the pressing force on the packaging bag (11) and the weight of the content. The acting force of this deformation and distortion acts sequentially on the folding line (13), the central mountain folding line (17) and the mountain folding line (12) and concentrates on the nozzle part (3), and the nozzle part (3) Can be instantaneously pushed out and the contents can be easily and reliably taken out. The folding slope line (1) extending from the lower end of the central mountain fold line (17) to the vicinity of the root end of the nozzle portion (3).
3) may be either mountain fold or valley fold.

FIG. 12 is a view showing a packaging bag according to the third invention of the present application, showing a state in which the nozzle portion (3) is opened. FIG. 13 is a schematic sectional view taken along line DD of FIG. The same components as those of the first and second inventions are denoted by the same reference numerals. In this example, as shown in FIG. 12, a bulging portion (25) is provided at the center of the nozzle portion (3) of the packaging bag (21).
And a nozzle portion (3) below the bulging portion (25).
A mountain fold line (26) is provided from the root of the package to the inside of the packaging bag (21). The mountain fold line (26) may be provided from near the root of the nozzle portion (3). When pouring out the contents when using the packaging bag (21), the packaging bag (21) is turned upside down and the plastic bottle is removed in the same manner as the above-described packaging bags of the first invention and the packaging bag of the second invention. Insert the nozzle part (3) of the packaging bag (21) into another refill container or the like and discharge the contents. At this time, the packaging bag (21)
Deformation and distortion occur near the base of the nozzle (3) due to the pressing force on the nozzle and the weight of the content. The acting force of this deformation or distortion is applied to the bulging portion (2) via the mountain fold line (26).
5) is concentrated on the nozzle portion (3) provided, and the bulging portion (25) of the nozzle portion (3) is further pushed and expanded, so that the contents can be more easily taken out and the open state is maintained. It becomes possible.

[0038]

According to the packaging bag of the present invention, when opening the nozzle portion of the packaging bag to pour out the contents, the action of deformation or distortion generated near the base of the nozzle portion is utilized. The nozzle part is pushed out to form a large opening, and even for high-viscosity contents, it is easy to pour out the nozzle part while preventing it from bending, ensuring a stable flow to the end. It is possible to quickly and quickly pour out the contents. In addition, as the contents are discharged from the packaging bag to another refill container, the contents of the packaging bag decrease, the pressing force on the packaging bag, the deformation and distortion of the content in the package due to its own weight. In this case, the opening state of the nozzle portion of the packaging bag is maintained, and the nozzle is not closed. Furthermore, according to the first and second aspects of the present invention, when transporting or transporting the products in a stack, they are not bulky, and do not require collapse of the load or extra space.

[Brief description of the drawings]

FIG. 1 is a front view of a packaging bag according to a first embodiment of the first invention of the present application.

FIG. 2 is a schematic cross-sectional view taken along line AA of FIG.

FIG. 3 is a view showing a situation when the packaging bag of FIG. 1 is poured out.

FIG. 4 is a schematic sectional view taken along line BB in FIG. 3;

FIG. 5 is a front view of a packaging bag according to a second embodiment of the first invention of the present application.

FIG. 6 is a partially enlarged view of a packaging bag according to a third embodiment of the first invention of the present application.

FIG. 7 is a partially enlarged view of a packaging bag according to a fourth embodiment of the first invention of the present application.

FIG. 8 is a partially enlarged view of a packaging bag according to a fifth embodiment of the first invention of the present application.

FIG. 9 is a partially enlarged view of a packaging bag according to a sixth embodiment of the first invention of the present application.

FIG. 10 is a partially enlarged view showing an example of a packaging bag according to the second invention of the present application.

11 is a schematic cross-sectional view taken along line CC of FIG.

FIG. 12 is a front view of a packaging bag according to the third invention of the present application.

FIG. 13 is a schematic sectional view taken along line DD in FIG. 12 at the time of pouring.

[Explanation of symbols]

 1, 11, 21 Packaging bag 2 Filling port 3 Nozzle part 4 Easy opening processing part 5, 26 Mountain fold line 6 Valley fold line 7, 17 Central mountain fold line 8 Auxiliary mountain fold line 9 Second auxiliary mountain fold line 10 Refill Vessel 12 mountain fold line 13 fold line 15 second mountain fold line 16 auxiliary valley line 25 bulge

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[Procedure amendment]

[Submission date] November 26, 1998 (1998.11.
26)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 12

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction contents]

[0005]

[Means for Solving the Problems] In a packaging bag having a nozzle portion formed by heat-sealing a plastic film, a mountain fold line and a valley fold line extending from the root portion of the nozzle portion or the vicinity thereof to the inside of the packaging bag are formed by the nozzle from the inside of the packaging bag. A packaging bag with a pouring function, which is provided in the order of a mountain fold line and a valley fold line toward a part. 2. 2. The packaging bag with a pouring function according to 1, wherein a central mountain fold line is provided at the center of the nozzle portion so as to extend inward of the packaging bag beyond the nozzle portion. 3. 3. The packaging bag with a pouring function according to 2, wherein an auxiliary mountain fold line is provided at an acute angle from the upper end of the central mountain fold line toward the side end of the nozzle portion. 4. 4. The packaging bag with a pouring function according to 2 or 3, wherein an auxiliary valley fold line is provided on an extension of the central mountain fold line in a region between the mountain fold line and the valley fold line. 5. In a region between the mountain fold line and the valley fold line, a second portion from the side end of the mountain fold line or the vicinity thereof to the inside of the packaging bag.
Any one of 2 to 4, characterized in that a mountain fold line is provided.
A packaging bag with a pouring function according to the item. 6. 6. The packaging bag with a pouring function according to 5, wherein the valley fold line is formed in a substantially S shape, and the second mountain fold line is provided in a substantially S shape substantially parallel to the valley fold line. 7. 7. The packaging bag with a pouring function according to any one of claims 1 to 6, wherein the mountain fold line and the valley fold line are provided so as to be in contact with each other at or near the root of the nozzle portion. 8. 8. The packaging bag with a pouring function according to any one of 2 to 7, wherein the central mountain fold line is constituted by three lines, and the lower ends of the central mountain fold lines on both sides are curved outward. . 9. In a packaging bag having a nozzle portion formed by heat-sealing a plastic film, a center mountain fold line is provided at the center of the nozzle portion, inward of the packaging bag beyond the nozzle portion, and from the upper end of the center mountain fold line. A packaging bag with a pouring function, wherein a mountain-folding inclined line is provided from the lower end of the central mountain-folding line so as to form an acute angle toward the side end of the nozzle portion. 10. 10. The packaging bag with a pouring function according to 9, wherein the fold slope is a mountain fold slope. 11. 10. The packaging bag with a pouring function according to 9, wherein the fold slope is a valley fold slope. 12. In a packaging bag having a nozzle portion formed by heat-sealing a plastic film, a bulging portion is provided at the center of the nozzle portion. A packaging bag with a pouring function, which is provided with an inward mountain fold line.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

The invention described in claim 12 of the present application (hereinafter referred to as “the invention”)
Mountain "third invention" hereinafter) packaging bag of the bulge portion is provided at the center of the nozzle portion, the inner side of the packaging bag of the bulge, extending from the base portion or in the vicinity of the nozzle portion inwardly of the packaging bag A fold line is provided, and the bulging portion and the mountain fold line are provided on at least one surface, preferably both surfaces, of the nozzle portion. By providing the bulging portion and the mountain fold line, when opening the packaging bag to pour out the contents, pressing force on the packaging bag,
Due to the weight of the contents in the packaging bag, outward deformation and distortion occur near the root of the nozzle portion of the packaging bag. Due to the action of this deformation or distortion, the mountain fold line protrudes outward of the packaging bag, the bottom of the bulge protrudes inward, and the packaging material of the bulge reverses and protrudes outward to further expand. The bulging portion is more easily pushed and expanded while preventing bending, so that the opening state is stable, the opening state is maintained without closing, and the stable pouring state can be maintained. The contents can be easily poured out and reliably performed.

Claims (12)

[Claims] 1. A packaging bag having a nozzle formed by heat-sealing a plastic film, wherein a mountain fold line and a valley fold line extending from a root portion of the nozzle portion or the vicinity thereof to the inside of the packaging bag are formed. A packaging bag with a pouring function, provided in the order of a mountain fold line and a valley fold line from the inside toward the nozzle portion. 2. The packaging bag with a pouring function according to claim 1, wherein a central mountain fold line is provided at the center of the nozzle portion so as to extend inward of the packaging bag beyond the nozzle portion. 3. The packaging bag with a pouring function according to claim 2, wherein an auxiliary mountain fold line is provided at an acute angle from the upper end of the central mountain fold line toward the side end of the nozzle portion. 4. A pouring function according to claim 2, wherein an auxiliary valley fold line is provided on an extension of the central mountain fold line in a region between the mountain fold line and the valley fold line. Packaging bag. 5. A fold line extending from the side end of the fold line or its vicinity to the inside of the packaging bag in a region between the fold line and the valley fold line. The packaging bag with a pouring function according to any one of claims 2 to 4. 6. The note according to claim 5, wherein the valley fold line is formed in a substantially S shape, and the second mountain fold line is provided in a substantially S shape substantially parallel to the valley fold line. Outer packaging bag. 7. The packaging with a pouring function according to claim 1, wherein the mountain fold line and the valley fold line are provided so as to be in contact with each other at or near the base of the nozzle portion. bag. 8. The central mountain fold line is composed of three lines,
The packaging bag with a pouring function according to any one of claims 2 to 7, wherein the lower ends of the central mountain fold lines on both sides are curved outward. 9. A packaging bag having a nozzle portion formed by heat-sealing a plastic film, wherein a center mountain fold line is provided at the center of the nozzle portion so as to extend inward of the packaging bag beyond the nozzle portion. With a pouring function, an inclined line is provided from the upper end of the fold line and a fold inclined line from the lower end of the central mountain fold line at an acute angle toward the side end of the nozzle portion. Packaging bag. 10. The packaging bag with a pouring function according to claim 9, wherein the fold inclined line is a mountain fold inclined line. 11. The packaging bag with a pouring function according to claim 9, wherein the fold inclined line is a valley fold inclined line. 12. A packaging bag having a nozzle portion formed by heat-sealing a plastic film, wherein a bulging portion is provided at the center of the nozzle portion, and the wrapping portion is provided inside the bulging portion from a root portion of the nozzle portion or in the vicinity thereof. A packaging bag with a pouring function, wherein a mountain fold line is provided toward the inside of the bag.