JP2000168792A - Packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a bending at the lower section of a notched section to provide a nozzle section, or a bending at the nozzle section from occurring, and improve the appearance and the self-supporting stability by providing a reinforcing rib on the side edge sealing section located under a connecting sealing section between the root section of the nozzle and the side edge sealing section. SOLUTION: For this packaging bag 1, a root section 5 on a peripheral edge sealing section 4 of a nozzle section 2, an upper edge sealing section 6 and one of side edge sealing sections 7 are respectively connected with a connecting sealing section 8. Also, the side edge sealing section 7 is integrated with a bottom member sealing section 9. In this case, on the side edge sealing section 7 located under the connecting sealing section 8 between the root section 5 of the nozzle section 2 and the side edge sealing section 7, a reinforcing rib 10 is partially provided. By this constitution, even when the nozzle section 2 is provided by cutting off, under the upper edge sealing section 6 and on the inside of the side edge sealing section 7, the side edge sealing section 7 under the connecting sealing section 8 can be prevented from bending, and the appearance and the self-supporting stability of the packaging bag 1 can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag provided with a nozzle for taking out contents such as a liquid seasoning, a liquid cosmetic, a liquid detergent, etc., and more particularly, it is suitable for refilling the contents in another container. The present invention relates to a packaging bag provided with a nozzle protruding toward one side.

[0002]

[Prior art] After purchase, plastic bottles, glass bottles,
Or, as a packaging bag used for seasonings, cosmetics, detergents, etc. that can be refilled into other containers, etc., it is self-supporting, easy to pour out contents, and can be poured out while maintaining a stable flow to the end Is required.

[0003] As a self-supporting packaging bag,
As shown in Japanese Patent Application Laid-Open No. 8-318954, there has been proposed a packaging bag in which side ribs are provided with uneven ribs to impart rigidity.

On the other hand, as disclosed in Japanese Patent Application Laid-Open No. Hei 7-2260, a reinforcing mechanism is provided at a nozzle formed at a corner of a packaging bag to provide a pour-out nozzle. Packaging bags that prevent bending are proposed.

[0005]

However, in the self-supporting packaging bag disclosed in JP-A-8-318954, in which the side seal portion is provided with uneven ribs to impart rigidity, the rigidity is imparted to the body itself. There is no nozzle that makes it easy to pour out the contents, it takes a long time to discharge, it is difficult to adjust the discharge amount, and the liquid is spilled due to being discharged in an unexpected direction. was there.

Further, in the case of a standing pouch having a self-supporting form, such as a packaging bag disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 8-318954, the lower part of the trunk is heat-sealed between the trunk and the bottom. The part where the bottom material is heat-sealed becomes thick, and it is difficult to provide uneven ribs in this part, and even if it is provided, the sealing boundary between the body material and the bottom material is peeled off or formed when forming the uneven ribs. Later deterioration may occur.

On the other hand, a packaging bag provided with a reinforcing mechanism at an outwardly protruding nozzle portion provided at a corner portion of the packaging bag in order to impart pourability as disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-2260,
Molding of the reinforcing mechanism is performed by a heated mold or the like, but cracks and wrinkles are likely to occur in the nozzle portion during the molding, and cracks and
If you try to prevent wrinkles, the reinforcement mechanism cannot be molded reliably,
There is a problem that the reinforcing effect by the reinforcing mechanism cannot be sufficiently exhibited.

Even if the reinforcing mechanism is formed, when the contents are poured out and refilled into another container, for example, a plastic bottle, a nozzle provided at the corner of the packaging bag at the mouth of the bottle. After engaging the connection seal between the root portion and the side seal portion, the packing bag is rotated and refilling is performed. At this time, the side seal portion side or the root portion on the upper side seal portion side, The neighborhood deforms inward of the packaging bag,
There is a problem that the nozzle portion is deformed, the engagement state is not stable, and refilling is not easy.

[0009] These problems become more pronounced as the thickness of the plastic film used as the material of the packaging bag is reduced.

[0010]

According to a first aspect of the present invention, a plastic film is heat-sealed to form a nozzle portion protruding outward at a corner portion of a packaging bag. A packaging bag is provided in which a reinforcing rib is provided in the side seal portion located below the connection seal portion between the side seal portions.

According to the second aspect of the present invention, in a packaging bag in which a plastic film is heat-sealed and a nozzle portion protruding outward is provided at a corner portion, a root portion of the nozzle portion, a side seal portion, And / or a packaging bag provided with a reinforcing rib in a connecting seal portion between upper side seal portions.

According to the third aspect of the present invention, in a packaging bag in which a plastic film is heat-sealed and an outwardly protruding nozzle portion is provided at a corner portion, a lower peripheral seal portion and / or an upper portion of the nozzle portion are provided. A packaging bag provided with a reinforcing rib in a peripheral seal portion is provided.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The material of the plastic film used for the packaging bag of the present invention is not particularly limited, and includes thermoplastic resins such as crystalline polypropylene, nylon, and polyethylene terephthalate. After unstretched, uniaxially stretched, or biaxially stretched, a single layer or a laminate of two or more layers is selected as appropriate according to the properties of the contents to be filled in the packaging bag.

As for the form of the packaging bag, the packaging bag of the first invention of the present application is a standing pouch or the like having autonomy, and the packaging bags of the second invention and the third invention of the present application are not particularly limited.
For example, a three-sided seal or a four-sided seal flat bag, a standing pouch having self-supporting properties, and the like can be given.

In the packaging bag according to the present invention, the side seal portion located below the connection seal portion between the base portion of the nozzle portion and the side seal portion, the base portion and the side seal portion of the nozzle portion, and / or Alternatively, reinforcing ribs provided on the connection seal portion between the upper side seals or the lower peripheral seal portion and / or the upper peripheral seal portion of the nozzle portion heat seal the plastic film to form a bag and cut it to form the nozzle portion. Provided at the time.

The means for providing the reinforcing ribs described above includes heating,
The cross section is formed to be concave or convex by pressurization, ultrasonic waves, or the like, but the means is not particularly limited, and any means may be used as long as it can be provided in the above-described seal portion.

[0017] The packaging bag provided with an outwardly protruding nozzle portion is swelled downward by the weight of the contents, and the nozzle portion for facilitating the pouring is provided below the upper side of the packaging bag and inward of the side. In particular, the lower part of the part cut out for providing the nozzle part is easily bent, and the nozzle part also tends to bend downward.

In the first aspect of the present invention, when the reinforcing rib is provided in the side seal portion located below the connecting seal portion between the base portion of the nozzle portion and the side seal portion, the reinforcing rib is provided. Functions as a support and prevents the lower part of the notched part from being bent in order to provide a nozzle part for facilitating pouring, so that the appearance is good, the self-sustaining stability is improved, and the lower part of the nozzle part is further improved. Bending to the right is also prevented.

Further, when refilling the contents in the packaging bag into another container such as a plastic bottle, the base of the side seal portion of the nozzle provided at one corner of the packaging bag is connected to the opening of the plastic bottle. After engaging the parts, this is done while rotating the packaging bag.

According to the second aspect of the present invention, when the reinforcing rib is provided in the connecting seal between the base of the nozzle and the side seal, the reinforcing rib provided in the connecting seal functions as a support, Irregular breakage of the base portion on the side of the side portion and the connection seal portion and the nozzle portion in the vicinity thereof is prevented, the engagement of the nozzle portion is stabilized, and refilling can be easily performed.

When refilling the contents from the packaging bag into another container such as a plastic bottle, first, the root of the side seal portion of the nozzle provided at the corner of the packaging bag is placed at the mouth of the plastic bottle. Then, the packaging bag is rotated, and the root portion on the upper side seal portion side of the nozzle portion is vigorously engaged with the mouth portion of the plastic bottle in some cases.

When the reinforcing rib is provided in the connection seal between the root of the nozzle and the upper seal, the reinforcing rib provided in the connection seal functions as a support, and the base on the upper seal side of the nozzle. Irregular breakage of the nozzle part and its vicinity is prevented, the engagement state is stable, and refilling is easy,
Can be done quickly.

In the third aspect of the present invention, when reinforcing ribs are provided on the lower peripheral seal portion and / or the upper peripheral seal portion of the nozzle portion, when the contents are refilled, the nozzle portion does not bend and the pouring direction is stable. Therefore, the discharge amount can be easily adjusted, and a reinforcing mechanism for preventing the nozzle portion from being bent is provided in the seal portion, so that the molding can be easily and reliably performed, and the nozzle portion has a reinforcing effect. Can be fully demonstrated.

The lower peripheral seal portion of the nozzle portion and / or
Or, when the reinforcing rib is provided on the upper peripheral seal portion, the outer peripheral edge of the peripheral seal portion is drawn inward at the time of molding, so that the nozzle portion can be easily inserted into the mouth of a refillable plastic bottle or the like. Can be.

The above-mentioned reinforcing ribs of the present invention may be provided continuously or discontinuously. The direction, position, length, depth, number, etc., of the reinforcing ribs are determined according to the purpose. It is appropriately selected.

[0026]

Next, the packaging bag of the present invention will be described with reference to the drawings, but these specific examples do not limit the contents of the present invention.

FIG. 1 is a reference drawing showing the packaging bag of the first invention of the present application, showing a state after the contents are filled, and FIG.
-A end view, the packaging bag 1 is a standing pouch (not shown) composed of a body material and a bottom material and having a heat-sealed peripheral edge and having a self-supporting edge, and a nozzle protruding outward with one corner cut away. The nozzle portion 2 is provided with an easy-opening portion 3 that is opened when the contents are poured out by laser processing, machining, or the like.

The packaging bag 1 includes a peripheral sealing portion 4 of the nozzle portion 2.
, The upper side seal part 6 and one side side seal part 7 are connected via connection seal parts 8 and 8, respectively.
The side seal 7 is integrated with the bottom seal 9 by heat sealing.

The reinforcing ribs 10 are partially provided in the side seal portions 7 located below the connection seal portions 8 between the root portions 5 of the nozzle portions 2 and the side seal portions 7.

In FIG. 1, the reinforcing ribs 10 are partially provided on the side seal portions 7, but may be provided so as to extend to the bottom seal portions 9 of the bottom material of the packaging bag 1.

However, the side seal portions 7, 7 of the body material
And the sealing boundary B of the bottom seal portion 9 of the bottom material may peel off during the formation of the reinforcing ribs 10 or deteriorate with time after the forming, so that the reinforcing ribs 10 are provided so as not to extend to the boundary B. .

Therefore, from the viewpoint of ensuring the sealing performance of the side seal 7 by molding the reinforcing ribs 10, the above-described position located below the connection seal 8 between the base 5 of the nozzle 2 and the side seal 7 is provided. Partially provided in the side seal portion 7, the range of
It is between the seal boundary portion B between the side seal portion 7 of the trunk material and the bottom seal portion 9 of the bottom material from immediately below the connection seal portion 8.

Further, as shown in FIG.
The cross-sectional shapes of 0 and 10 are semicircular, but the cross-sectional shape may be elliptical, triangular, polygonal, or the like, and the shape is not particularly limited.

Then, in the packaging bag 1 of the first invention of the present application,
A self-standing standing pouch or the like swells downward due to the weight of the contents, thereby facilitating pouring.
The lower part of the upper side seal part 6 of the packaging bag 1 and the side side seal part 7
Even if notched inward, the side seal portion 7 below the connection seal portion 8 is not bent, the appearance is good, the self-standing stability is improved, and the nozzle portion 2 is similarly bent downward. Nothing.

As shown in FIG. 3, the reinforcing ribs 10 may be provided on both side seals 7, 7 of the other side seal 7 corresponding to the side seal 7 on the nozzle 2 side. In this case, when the packaging bag 1 is self-standing, it is provided at a position corresponding to the liquid / gas boundary portion C between the contents and the head space, so that the packaging bag 1 at the liquid / gas boundary portion C is provided. Can be prevented from being bent.

FIG. 4 is a reference view showing the packaging bag according to the second invention of the present application and shows a state after the contents are filled. The packaging bag 11 is composed of a body material and a bottom material (not shown), and is a self-supporting body whose peripheral edge is heat-sealed. It is a standing pouch having a characteristic, provided with a nozzle portion 12 which is cut out at one corner and protrudes outward, and which is opened when the contents are poured out, such as laser processing, machining, etc. Is provided.

The packaging bag 11 is formed by connecting the root portions 15 and 15 of the peripheral edge seal portion 14 of the nozzle portion 12, the upper side seal portion 16 and one side side seal portion 17 to the connection seal portions 18 and 1 respectively.
The side seal portion 17 and the other side seal portion 17 are integrated with the bottom seal portion 19 of the bottom material by heat sealing.

Then, the side seal portion 17 of the nozzle portion 12
Reinforcing ribs 20 are provided on the connection seal portion 18 between the side root portion 15 and the side seal portion 17.

As shown in FIG. 5, the reinforcing ribs 20 may be provided on the base portion 15 on the upper side seal portion 16 side of the nozzle portion 12 and the connection seal portion 18 between the upper side seal portion 16 and FIG. As shown in FIG.
5, 15 and the connection seal portions 18 between the upper side seal portion 16 and the side side seal portion 17, respectively.

According to the second aspect of the present invention, when the contents such as the liquid detergent are poured out and transferred to another container (not shown) such as a plastic bottle, the contents are provided at the corner of the packaging bag 11. Refilling is performed while rotating the packaging bag with the base portion 15 of the nozzle portion 12 on the side seal portion 17 side engaged with the mouth of the plastic bottle.

At this time, the weight of the content liquid and the pressing force are applied to or near the root portions 15 and 15 of the nozzle portion 12, but the connection seal portion between the root portion 15 of the nozzle portion 12 and the side seal portion 17 is provided. The reinforcing ribs 20 provided at 18 function as columns, preventing irregular breakage, stabilizing the engagement of the nozzle portion 12, and facilitating refilling.

When refilling the contents from the packaging bag 11 into another container such as a plastic bottle, first, the root 15 of the side seal portion 17 of the nozzle portion 12 provided at the corner of the packaging bag 11 is removed. Even if the plastic bag is engaged with the mouth of the plastic bottle, and then the packaging bag 11 is rotated to cause the base 15 on the upper side seal portion 16 side of the nozzle 12 to vigorously engage with the mouth of the plastic bottle, Root 15 of
The reinforcing rib 20 provided on the connection seal portion 18 between the upper seal portion 16 and the upper seal portion 16 functions as a support, and prevents the root portion 15 on the upper seal portion 16 side of the nozzle portion 12 and its vicinity, and irregular breakage of the nozzle portion 12. As a result, the engagement state is stable, and refilling can be performed easily and quickly.

FIG. 7 is a reference view showing a packaging bag according to the third invention of the present application and shows a state after the contents are filled. The packaging bag 21 is composed of a body material and a bottom material (not shown), and is self-standing with its peripheral edge being heat-sealed. It is a standing pouch having a characteristic, and is provided with a nozzle portion 22 that cuts out at one corner portion and protrudes outward. The nozzle portion 22 is opened by laser processing, machining, etc. when the contents are poured out. An easy-open portion 23 is provided.

The packaging bag 21 is formed by connecting the base portions 25, 25 of the peripheral seal portion 24 of the nozzle portion 22, the upper side seal portion 26 and one side side seal portion 27 to the connection seal portions 28, 2 respectively.
The side seal portion 27 and the other side seal portion 27 are integrated with the bottom seal portion 29 of the bottom material by heat sealing.

Further, a reinforcing rib 30 is provided on the lower peripheral sealing portion 24a of the nozzle portion 22.

The reinforcing ribs 30 may be provided on the upper peripheral seal portion 24b of the nozzle portion 22 as shown in FIG. 8, and the lower and upper peripheral seal portions of the nozzle portion 22 as shown in FIG. It may be provided in both of 24a and 24b.

According to the third aspect of the present invention, since the reinforcing mechanism for preventing the nozzle portion 22 from being bent at the time of discharging the contents is formed in the peripheral edge seal portions 24a and 24b, the molding can be performed easily and reliably. And the reinforcing effect of the nozzle portion 22 can be sufficiently exhibited, and the nozzle portion 2 at the time of pouring can be obtained.
The shape of No. 2 is stabilized.

In the invention of the present application, the first to third inventions can be combined into a packaging bag as appropriate.

[0049]

According to the packaging bag of the first aspect of the present invention, the reinforcing rib is provided on the side seal located below the connection seal between the base of the nozzle and the side seal. Bending of the lower portion of the cutout portion for providing the nozzle portion is prevented, the appearance is improved, the self-sustaining stability is improved, and the downward bending of the nozzle portion is also prevented.

Further, according to the packaging bag of the second invention of the present invention, the contents are provided by providing the reinforcing ribs at the connection portion between the base portion of the nozzle portion and the side seal portion and / or the upper side seal portion. When refilling into another container, irregular breakage between the base of the nozzle and the side seal and / or upper seal is prevented, the nozzle does not bend, and the discharge direction is stable because the nozzle is not bent. The amount can be easily adjusted.

According to the third aspect of the present invention, the reinforcing ribs are provided on the lower peripheral seal portion and / or the upper peripheral seal portion of the nozzle portion, so that the molding can be performed easily and reliably. The shape retention is excellent, and the effect of reinforcing the nozzle portion can be sufficiently exhibited.

[Brief description of the drawings]

FIG. 1 is a reference drawing showing a packaging bag of the first invention of the present application.

FIG. 2 is an AA end view of FIG. 1;

FIG. 3 is a reference view showing another embodiment of the packaging bag of the first invention of the present application.

FIG. 4 is a reference view showing a packaging bag according to the second invention of the present application.

FIG. 5 is a reference view showing another embodiment of the packaging bag of the second invention of the present application.

FIG. 6 is a reference view showing another embodiment of the packaging bag of the second invention of the present application.

FIG. 7 is a reference view showing a packaging bag according to a third invention of the present application.

FIG. 8 is a reference view showing another embodiment of the packaging bag of the third invention of the present application.

FIG. 9 is a reference view showing another embodiment of the packaging bag of the third invention of the present application.

[Explanation of symbols]

 1, 11, 21 Packaging bag 2, 12, 22 Nozzle part 3, 13, 23 Easy-open part 4, 14, 24 Peripheral seal part 24a Lower peripheral seal part 24b Upper peripheral seal part 5, 15, 25 Root part 6, 16 , 26 Top side seal part 7, 17, 27 Side side seal part 8, 18, 28 Connection seal part 9, 19, 29 Bottom side seal part 10, 20, 30 Reinforcement rib-11-

Claims (3)

[Claims] In a packaging bag in which a plastic film is heat-sealed and an outwardly projecting nozzle portion is provided at a corner portion, the packaging film is located below a connection seal portion between a root portion of the nozzle portion and a side-side seal portion. A packaging bag, wherein a reinforcing rib is provided on the side seal portion. 2. In a packaging bag in which a plastic film is heat-sealed and a nozzle portion protruding outward is provided at a corner portion, a connection seal between a root portion of the nozzle portion and a side seal portion and / or an upper side seal portion. A packaging bag characterized in that a reinforcing rib is provided in a portion. 3. A packaging bag in which a plastic film is heat-sealed and a nozzle portion protruding outward is provided at a corner portion, and a reinforcing rib is provided at a lower peripheral seal portion and / or an upper peripheral seal portion of the nozzle portion. A packaging bag, characterized in that: