JP2000296859A - Liquid packaging container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouring port section which can be easily inserted in the mouth section of a container while the front surface shape and the back surface shape are approx. square, make the development and the modification on a filling machine side unnecessary, and facilitate the transfer of a content. SOLUTION: In this container at one corner side of an upper sealed section 5 constituted by affixing the upper sections of a front surface sheet 2 and a back surface sheet 3 which are respectively approx. square and are confronted with each other, a pouring port shape section 8 being located between an extended sealed section 9 which continues from the upper sealed section 5 to the container bottom section side, and the container side section, is provided, and at a location closer to the pouring port shape section 8 side on the extended sealed section 9, a dividing line section 11 along the border between the extended sealed section 9 and the pouring port shape section 8, is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid packaging container, and more particularly to a liquid packaging container formed by laminating sheets.

[0002]

Conventionally, bottle-type containers made of synthetic resin or the like have been problematic in that when they are discarded when they are not needed, they tend to increase garbage and damage the environment. I have. Under these circumstances, in recent years, products such as kitchen liquid detergents, laundry liquid detergents, liquid softeners, shampoos, rinses, and body soaps, which have been widely used in ordinary households, have environmental impacts as refills. It has come to be provided by using a liquid packaging container which is a container which is made of a material in consideration of the above and which is hardly bulked. FIG. 10 shows a liquid packaging container 1 as an example thereof, which comprises a front sheet 2 and a back sheet 3 each having a substantially rectangular shape, and a bottom sheet 4 for a bottom, and the bottom sheet 4 is attached to the bottom of the container. The front sheet 2 and the back sheet 3 are stuck together (for example, heat-sealed) with the interposition therebetween, and the space between the lower side of the front sheet 2 and the lower side of the back sheet 3 at the bottom of the container can be made independent, and At the upper part of the container, the front and rear sides of the front sheet 2 and the back sheet 3 are adhered to each other, and the front and rear shapes are substantially rectangular. This form is generally called a standing pouch. When the contents are poured out from the liquid packaging container 1, one corner of the upper seal portion 5 formed by bonding the upper portions of the front sheet 2 and the back sheet 3 is cut and opened, and this is used as a spout. The contents are poured out. FIG.
As shown in FIG. 1, in the conventional liquid packaging container 1, one corner of the upper seal portion 5 is raised upward in order to make it easy to apply a spout portion to a mouth portion of the empty container when transferring contents to an empty container. A beak-shaped spout 6 protruding toward
There is an external shape of the container, and when pouring out the contents, cut the middle part of the beak-shaped spout 6 and insert the cut end into the mouth of the empty container to pour the contents. I have to.

[0003] In the above-mentioned liquid packaging container, the following inconveniences occur because the spout port is formed to have an irregular shape by protruding outside. In such a liquid packaging container, as shown in FIG. 12, a container body in which a part of the upper part is opened with the filling port 7 next to the spout 6 is prepared in advance, and the filling is performed at the time of filling. After opening the opening 7 and filling the contents, the upper portions of the front sheet 2 and the back sheet 3 are heat-sealed and sealed by a sealing device of the filling machine. However, in order to heat-seal the upper portions of both sheets while keeping the spout 6 unaffected at the time of sealing, it is necessary to use a filling machine which has been used for filling and sealing a normally-shaped liquid packaging container. New costs such as development and major remodeling are required. Further, when producing the liquid packaging container, the upper side of the front sheet and the back sheet is largely cut off in order to obtain a projecting spout, and the cut portion is wide so that the sheet material is economically cut. There is also a problem that it cannot be used. On the other hand, in the liquid packaging container having the above-described substantially rectangular shape, a device has been devised so as to improve the pourability when the seal is opened by changing the seal shape of the upper seal portion and the side seal portion. Were inferior to those having the above-mentioned single outlet. In view of the above circumstances, the present invention has been made to solve the above problem by providing a spout portion that can be easily inserted into the mouth of a container while having a substantially square front and rear shape, and has been developed or modified on the filling machine side. It is an object of the present invention to eliminate the necessity and to easily transfer contents.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and has been made in consideration of the above-mentioned problems. Inside the container, a spout-shaped portion is provided between an extended seal portion and a container side portion that are continuous from the upper seal portion toward the container bottom, and the spout-shaped portion is located closer to the spout-shaped portion side of the extended seal portion. The present invention solves the above-mentioned problem by providing a liquid packaging container characterized in that a dividing line portion is provided at a position along the boundary between the extension seal portion and the spout shape portion. In the present invention, both ends of the dividing line portion may be located in the sealing region, and one end of the dividing line portion may reach the outer edge of one corner of the upper seal portion. It can be. Further, it is preferable that the packaging container is in a form capable of being self-supporting.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. In addition, the same reference numerals are given to portions having the same configuration as the conventional example, and the description thereof will be omitted. In the liquid packaging container 1 of the present invention, as shown in FIG. 1, a front sheet 2 and a back sheet 3 each having a substantially square shape are arranged facing each other, and a bottom sheet 4 is interposed at the bottom of the container. In this state, the periphery of the front sheet 2 and the back sheet 3 is heat-sealed, and the space between the lower side of the front sheet 2 at the bottom of the container and the lower side of the back sheet 3 can be expanded. And back sheet 3
In this embodiment, the front and back shapes are substantially square as a form in which the three peripheral portions are bonded to each other. In the liquid packaging container 1, at one corner of an upper seal portion 5 formed by laminating the upper portions of the front sheet 2 and the back sheet 3, in the illustrated example, on the left side of the upper seal portion 5 in the drawing. A spout shape part 8 is provided inside the container. The spout shape portion 8 extends from the upper seal portion 5 toward the bottom of the container in a substantially triangular shape having a lower end at an angle so as to extend the seal region 9 a.
And a side seal portion 1 formed by heat sealing the respective side portions of the front sheet 2 and the back sheet 3 in the container side portion.
0. The boundary 10a between the side seal portion 10 and the inside of the container is vertical, and the boundary 9b between the extension seal portion 9 and the inside of the container on the container side is from one corner of the upper seal portion 5 to the container center. , The spout shape portion 8 is formed in a tapered shape having a vertex at one corner side of the upper seal portion 5 when viewed from the front side or the back side.

In FIG. 1, reference numeral 11 denotes a dividing line provided in the seal area 9a of the extension seal 9. The dividing line portion 11 has a perforation in which a cut penetrates the front sheet 2 and the back sheet 3 and the two sheets 2,
3 is processed into an easily separable state or a separated state like a slit penetrating through, and as shown in FIG. And is provided along the boundary 9b of the extension seal portion 9. Of course, in order to ensure the sealing state, the dividing line portion 11 and the boundary 9
The required distance is secured between the first and second members. The dividing line portion 11 is provided in a straight line shape, and each end portion 11a, 11b is provided with a cut-off means 12, such as a punched hole for preventing tearing, from proceeding. End portion 1 of the dividing line portion 11 during the opening operation
The tear is prevented from extending from 1a, 11b.

In the figure, reference numeral 13 denotes a guide line portion which indicates an unsealed portion of the spout shape portion 8. The guide line portion 13 extends from the side seal portion 10 of the container to the dividing line portion 11 so as to cross the spout shape portion 8. It is provided so as to reach almost the center position, and is inclined such that the side seal portion 10 is lower and the extension seal portion 9 is higher, and the guide wire portion 13 is extended at the side seal portion 10. A notch 14 in which the side seal portion 10 is cut off is located on the line. The guide line portion 13 itself does not penetrate the front sheet 2 or the back sheet 3, but has a role of indicating an opening cut portion from the notch 14 to the dividing line portion 11. The guide line portion 13 is constituted by a broken line display. As a method other than printing, the guide line portion 13 may be formed by performing perforations or scratches that do not penetrate the front sheet 2 or the back sheet 3.

To open the liquid packaging container 1 having the above structure and pour out the contents, first, as shown in FIG. The spout shape part 8 is cut so as to reach the parting line part 11. As a result, the liquid packaging container 1 is opened at the outlet 8. Further, when cutting the spout shape portion 8 while tearing it from the notch 14 with a fingertip, a certain amount of momentum is applied and the tear reaches the dividing line portion 11 so that the extension seal portion 9 is slightly opened at the position of the dividing line portion 11. However, since there are cut-off means 12 at both ends of the dividing line portion 11, the tear does not extend to portions other than the dividing line portion 11,
The tear is reliably prevented from reaching the inside of the container.
In addition, even when the spout shape portion 8 is cut in this way, the portion that was on the upper side of the spout shape portion 8 becomes the uncut portion 15 that is continuous with the extension seal portion 9 and is cut off. No garbage (see FIG. 2). Then, after cutting the spout shape portion 8, the uncut portion 15 and the extension seal portion 9 are folded back to the other side seal portion side, and the dividing line portion is formed on the upper seal portion 5 as shown in FIG. 11, the folded portion remains in the state of being locked to the upper seal portion 5 and does not cover the opening of the spout shape portion 8, and the lower parting line The part 11 is also slightly opened so that the spout-shaped part 8 projects independently. Thereafter, as shown in FIG. 4, if the spout-shaped portion 8 projecting from the bottle B is inserted into the mouth B of the bottle container A, the spout-shaped portion 8 is securely inserted into the mouth B. And the contents can be easily transferred.

On the other hand, the liquid packaging container 1 of this structure has a front shape and a rear shape that are substantially rectangular as described above, and before filling the contents, as shown in FIG. The upper seal portion 5 above the dividing line portion 11 and the extension seal portion 9 extending downward from the upper seal portion 5 are previously heated so as to be continuous with the upper end of the side seal portion 10 on the side where is located. The other boundary 9c of the extension seal portion 9 is made vertical, and the opposing side seal portion 10 is also formed in a vertical band shape, and the space therebetween is defined as the filling port 7. When the filling port 7 is sealed by heat sealing after filling, the upper portions of the front sheet 2 and the back sheet 3 are formed in a straight line, and the spout shape portion 8 is not located on the straight line. Even if heat sealing is performed with the same sealing device as that for the rectangular liquid packaging container, the sealing device does not pinch the spout 8 and the spout 8 is not affected. That is, even if the upper portion of the front sheet 2 and the back sheet 3 is sandwiched and heat-sealed over the entire region in the container width direction by a sealing device having a long seal bar over the entire region in the width direction of the container, Container 1
Since the upper portion of the spout shape portion 8 is heat-sealed in advance, the heat-sealed portion is sandwiched by the seal bar. Therefore, there is no need to develop a new dedicated filling machine in place of the conventionally used filling machine, and it is not necessary to improve the conventionally used filling machine.

In the above-mentioned dividing line portion 11, the gap between the cut-off means 12 has been described as a straight line. However, the present invention is not limited to this, and as shown in FIGS. The shape may be convex or concave with respect to the portion 8 side. In addition, as shown in FIG. 6 (c), the zigzag shape may be formed, and the side edge shape of the side seal portion 10 corresponding to the spout shape portion 8 may be formed in a zigzag shape. This makes it easy for the zigzag-shaped portions a to be engaged with the mouth of the container when the contents are poured out, so that the spout-shaped portions are stably inserted. FIG. 7 further shows an outlet shape section 8 and an extension seal section 9.
Are shown in an unsealed state. FIG.
(A) is a case in which a triangular unsealed area 16 is formed above the dividing line portion 11 in the above embodiment, and the filling port 7 side is a vertical sealed portion. Then, filling is performed and the filling port is heat-sealed to obtain a container containing the contents. As described above, since the filling port 7 side is a vertical seal portion, it is easy to turn back to the heat-sealed upper seal portion 5 side in the above-described turn-back after opening. FIG. 7 (b) shows that the lower end of the extension seal portion 9 is further extended in a circular shape so that the enlarged portion 9d is continuous, and the sealing edge on the upper end side of the spout shape portion 8, ie, the container on the upper end side The boundary 8a with the inside is brought close to the guide line portion 13. in this way,
Since an enlarged portion 9d is provided at the lower end of the extension seal portion 9,
When a large tearing force is applied to the lower end side of the dividing line portion 11 when the spout opening portion 8 is torn and opened or when the above-described folding operation is performed and the tear extends, the extension of the tear is stopped by the enlarged portion 9d. And guide wire part 1
Since the boundary 8a is close to 3, the tear at the time of tearing is properly advanced along the guide line portion 13 while being guided by the boundary 8a, and an appropriate opening shape can be obtained. FIG. 7C shows a state in which the boundary 9c of the extension seal portion 9 is inclined toward the parting line portion 11 side.
The filling port 7 is made wider. And FIG.
In (d), the boundary 9c is inclined in the opposite direction. In the case of this example, even when the container is inclined so that the bottom of the container faces upward when the contents are poured out, no liquid pool is formed on the boundary 9c side. FIG. 7E shows the extension seal portion 9.
Is vertically elongated, so that the width of the spout shape portion 8 is substantially the same in the vertical direction, and the dividing line portion 11 located in the extension seal portion 9 is formed in the vertical direction. That is, the width of the flow path in the pouring shape portion 8 is substantially the same in the vertical direction, so that the content can be more easily poured out. In this example, the dividing line portion 1
Although it is set to 1, it is difficult to perform the operation of folding back and hooking the uncut part to the upper seal part,
It is desirable that the parting line part itself is inclined in an angle range of 90 degrees from the state parallel to the upper seal part to the above-mentioned standing state.

FIG. 8 shows a method for improving the operability when the contents are poured out. A folding instruction line 17 is provided at a position on the extension seal portion 9 on the extension of the boundary 9b. When the contents are poured out, the entire container is folded at the position of the bending instruction line 17 so that the entire container has a large triangular shape with the top of the spout shape portion as an apex, and is stored in the container. In this way, the contents can be easily guided to the open opening of the spout-shaped portion so that the contents can be efficiently discharged. In particular, when pouring out high-viscosity contents such as shampoos, rinses, and body soaps, the contents are appropriately guided to the opening, and the squeezing operation is also easily performed.

FIG. 9 shows an embodiment in which the end portion 11a of the dividing line portion 11 reaches the upper edge of one corner of the upper seal portion 5. In the liquid packaging container 1, the dividing line portion 11 is thus formed. One end 11a may reach the outer edge of one corner of the upper seal portion 5, and the one end 11a is close to the upper portion of the spout shape portion 8. Therefore, after the spout opening portion 8 is opened as described above, if the dividing line portion 11 is formed of a slit, the sealing region above the dividing line portion 11 is bent. 1
When 1 is a perforation, it is cut off and the sealing region above the dividing line portion 11 is bent to obtain a protruding spout-shaped portion 8, and the spout-shaped portion 8 can be easily inserted into the mouth of the container. Become.

Examples of the material composition used for the container of the present invention include the following. (1) Front sheet, back sheet: (external) polyethylene terephthalate (12 μm) / aluminum foil (7 μm) / stretched nylon (15 μm) / linear low density polyethylene (100 μm)
m) Bottom sheet: (external) nylon (25 μm) / aluminum foil (7 μm) / linear low-density polyethylene (120 μm) (2) Front sheet, rear sheet: (external) polyethylene terephthalate (12 μm) provided with a vapor deposition layer on the inner surface ) / Stretched nylon (15 μm) / linear low-density polyethylene (130 μm)
m) * Examples of the vapor deposition layer include vapor deposition of a metal such as aluminum and vapor deposition of an inorganic compound such as alumina and silica. Bottom sheet: (Outer surface) Nylon (25 μm) / Linear low-density polyethylene (120 μm) (3) Front sheet, back sheet: (Outer surface) Polyethylene terephthalate (12 μm) provided with a vapor deposition layer on the inner surface / Vacuum layer provided on the outer surface Stretched nylon (15 μm) / linear low-density polyethylene (130 μm) Bottom sheet: (external surface) Nylon (25 μm) / linear low-density polyethylene (120 μm) (4) Front sheet, back sheet: (external) Inner layer on inner surface Polyethylene terephthalate (12 μm) / linear low-density polyethylene (150 μm) Bottom sheet: (external) nylon (25 μm) / linear low-density polyethylene (150 μm) (5) Front sheet, back sheet: (external) polyethylene terephthalate (12 μm) / stretched nylon (15 μm) / linear low density polyethylene ( 130 μm) Bottom sheet: (external surface) nylon (25 μm) / linear low-density polyethylene (130 μm) (6) Front sheet, rear sheet: (external surface) polyethylene terephthalate (12 μm) / stretched nylon (15 μm provided with a vapor deposition layer on the external surface) ) / Linear low density polyethylene (130μ)
m) Bottom sheet: (external) nylon (25 μm) / linear low density polyethylene (130 μm) (7) Front sheet, rear sheet: (external) stretched nylon (15
μm) / linear low-density polyethylene (150 μm) Bottom sheet: (external) stretched nylon (25 μm) / linear low-density polyethylene (150 μm)

In the liquid packaging container 1 of each of the above-mentioned embodiments, a bottom seal is provided at the bottom of the container, and the lower portions of the front sheet and the back sheet are opened so that each lower portion becomes a leg so that the container can stand on its own. Although shown, the invention is not so limited. For example, a four-sided sealed flat pouch-type container in which the four sides are heat-sealed as described above using only two sheets, the front sheet and the back sheet, the front sheet and the back face facing each other by folding one sheet A sheet and a three-side sealed flat pouch type container heat-sealed on three sides other than the folded part side, a sleeve-shaped container body from a sheet material so that the body seal part is located on the back sheet side. Then, it can be adopted for various things such as a pillow pouch type container in which the upper and lower ends are heat sealed. Particularly suitable for self-contained packaging containers where the bottom must be sealed and the liquid filled from the top.

[0015]

As described above, according to the liquid packaging container of the present invention, the inside of the container at one corner side of the upper seal portion formed by bonding the upper portions of the front sheet and the back sheet, which are substantially square, and are opposed to each other. On the other hand, a spout shape portion is provided between an extension seal portion and a container side portion that are continuous from the upper seal portion toward the container bottom portion, and a position of the extension seal portion closer to the spout shape portion side. In addition, a dividing line portion is provided along a boundary between the extension seal portion and the spout shape portion. Since the separation line portion is provided in the vicinity of the spout shape portion, the spout shape portion is cut and opened, and then folded back at the extension seal portion located next to the spout shape portion. By doing so, a protruding spout-shaped part is obtained, and the spout-shaped part is easily inserted into the mouth of the container, and the operation of transferring the contents to a bottle-shaped container or the like is simplified. In addition, the shape of the liquid packaging container itself is a substantially rectangular shape, and a seal bar for sealing the filling port after filling the contents can be used as it is, and the conventional one that heat seals the upper part of the substantially rectangular container can be used as it is. Filling and heat sealing can be performed by a filling machine equipped with a conventional sealing device composed of a seal bar, and a liquid packaging container with extremely good pourability can be obtained without requiring new equipment costs. In addition, height restrictions as a product, for example,
Due to height restrictions when arranging on display shelves and sizes that are easy for general consumers to handle, even if the height is set for refill products such as shampoo and rinse, the upper seal part will be at the limit height. The container has a large internal capacity by adopting a dimensional shape in which is positioned. Further, since the ratio of the content to the entire shape is increased, the entire container can be made compact even if the content is the same as the conventional one. And since the whole shape is a substantially square shape, the number of extracted portions in the container manufacturing process before filling is reduced, and it is possible to reduce dust generated at the time of manufacturing. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of a liquid packaging container according to the present invention.

FIG. 2 is an explanatory view showing a state in which a spout shape section is cut in one example.

FIG. 3 is an explanatory view showing a state in which an uncut portion is locked to an upper seal portion in one example.

FIG. 4 is an explanatory diagram showing transfer of contents.

FIG. 5 is an explanatory diagram showing an unfilled filling port in one example.

FIG. 6 is an explanatory diagram showing a modification of a dividing line portion.

FIG. 7 is an explanatory view showing a modified example of a spout shape portion and an extension seal portion.

FIG. 8 is an explanatory diagram showing an example having a bending instruction line.

FIG. 9 is an explanatory diagram showing an example in which an upper end of a dividing line portion reaches an outer edge of an upper seal portion.

FIG. 10 is an explanatory view showing a conventional example having a substantially rectangular shape.

FIG. 11 is an explanatory view showing a conventional example having a projecting spout.

FIG. 12 is an explanatory view showing a filling port in a conventional example having a projecting spout.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Liquid packaging container 2 ... Front sheet 3 ... Back sheet 5 ... Upper seal part 6 ... Outlet part 7 ... Filling port 8 ... Outlet shape part 9 ... Extension seal part 9a ... Seal area 10 ... Side seal part 11 ... Dividing line portion 12: Cut-off means 13: Guide line portion 15: Uncut portion 17: Bending instruction line

Claims (4)

[Claims] 1. An inner side of a container at one corner of an upper seal portion formed by laminating upper portions of a front sheet and a back sheet which are substantially square and opposed to each other, and are continuous from the upper seal portion toward the container bottom side. A spout-shaped portion positioned between the extension seal portion and the container side portion is provided, and a position close to the spout-shaped portion side of the extension seal portion is provided along a boundary between the extension seal portion and the spout shape portion. A liquid packaging container provided with a dividing line portion. 2. The liquid packaging container according to claim 1, wherein both ends of the dividing line portion are located in a sealing area. 3. The liquid packaging container according to claim 1, wherein one end of the dividing line portion reaches an outer edge on one corner side of the upper seal portion. 4. The liquid packaging container according to claim 1, wherein the packaging container is in a self-supporting form.