JP2005271943A - Simplified bag container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refilling bag container which is a simplified bag container made of a flexible resin film and has an outlet capable of being opened in a circle for spouting a content liquid smoothly. <P>SOLUTION: The simplified bag container is folded flat in its usual state, but its lower part has a cylindrical shape and the upper part has a solid shape inclined like an inverted V-shaped roof when the container is filled with a content liquid. A cut line is formed at one angled corner of the container, where one end of a top sealed part and one end of a side sealed part are joined, to cut the angled corner diagonally. A heaving sealed part is formed approximately in the center of the top sealed part other than both right/left sides thereof to extend downward. When the cut line is cut, a V-shaped bulge surrounding the sealed protrusion part from below is forced to open the outlet by elasticity having the V-shaped bulge, and this state is maintained to spout the liquid smoothly. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a simple bag container that is composed of a flexible resin film and is suitable as a container for refilling liquid detergent or the like.

  The bottle caps for liquid detergents for kitchens, bathrooms, toilets, etc. are equipped with spraying and other materials suitable for each application, so they are sealed in simple bag containers for effective use. There is a commercially available liquid detergent for refilling.

  FIGS. 8 to 10 show the basic structure of the simple bag container. The front side portion 100 and the back side portion 101 are overlapped with each other by folding the substantially central portion of one flexible resin film into a W shape. Side seal portions 3 are provided at both left and right edges of the portion 100 and the back portion 101 to form a bag body having the W bottom portion 2 at the bottom portion 102, and a lower edge seal portion is provided at the lower edge of the bottom portion 102 Left and right bottom seals in which the gap between the ends of the fold line 7 at the bottom of the W and the side seal portion 3 and the two valley fold lines 8 at the bottom of the W are obliquely sealed. Part 9 is provided. In addition, the said seal part adhere | attaches the front side part 100 and the back side part 101 by thermocompression bonding, and is the same also in another example.

  The bag body configured as described above has a planar shape before being filled with the content liquid, but is deformed into a three-dimensional shape when the content liquid is filled. That is, when the content liquid is filled from the upper end opening 1 of the bag body, the front side portion 100 and the back side portion 101 swell back and forth due to the gravity of the content liquid, and the left and right side seal portions 3, the front side portion 100, and the back side portion 101 are expanded. The left and right sides of the bag are pulled in to the left and right (the direction substantially perpendicular to the above-described front-and-back bulge direction), whereby the W bottom 2 spreads and the bottom of the bag forms a substantially rectangular tube. The upper part has a palm roof structure in which the front side part 100 and the back side part 101 are gradually inclined inward, and the content liquid can be sealed by sealing the upper end opening 1 and providing the top seal part 5. In the use, it is poured out by cutting off the corner formed by the top seal part 5 and the side seal part 3 along the cut line C as shown in FIG. 12 was formed, which by tilting in hand can be refilled by inflow of content liquid from the spout 12 in the body vessel. The cut line C has fine perforations by laser processing in advance.

  And since the above-mentioned simple bag container is made of a flexible resin film, it can be folded and thrown away into a substantially flat shape after use, so it is not bulky compared to blow-formed bolts and bottles, and the volume of garbage accordingly. It is widely used because it can be made smaller.

  However, since the above-described simple bag container is made of a flexible resin film, it is extremely difficult to keep the spout 12 in a stable state in a substantially constant shape. When refilling the bottle, there is a problem that the spout 12 is easily deformed due to deformation of the bag container or fluctuation of the internal pressure, and the content liquid becomes difficult to overflow or overflows, making it difficult to refill.

  In addition, in order to improve the above-mentioned problems, there have been proposals such as providing a spigot that is a molded product at the spout, but all of them are costly and incurred in terms of inventory space and transportation cost. There is a problem.

In addition, what is shown to the following patent document is known as a prior art relevant to this invention.
JP 2000-190987 A JP 11-314653 A Japanese Patent Laid-Open No. 11-314644

  The present invention improves the problems of the prior art as described above, and when the cut line is cut, the refilling spout can be reliably opened, and the spout has an extremely stable property, It is an object of the present invention to provide a simple bag container capable of refilling the content liquid in a stable state from the beginning to the end.

In order to achieve the above-mentioned object, the present invention superimposes a front side portion and a back side portion made of a flexible resin film, and integrally joins the lower end edges thereof with a W bottom portion, and both left and right sides of the front side portion and the back side portion. It forms a bag with the edge sealed integrally with the side seal part and the upper edge opened, and is normally folded into a flat shape, but when filled with content liquid and sealed the upper opening edge with the top seal part In a simple bag container having a three-dimensional shape in which the lower part forms a cylindrical shape and the upper part is inclined to a gassho roof shape,
Provided with a cut line that obliquely cuts one corner where one end of the top seal portion and one end of the side seal portion intersect, and is substantially downward from the top seal portion except for the left and right sides of the top seal portion. A raised seal portion extending in the direction is formed.

  The simple bag container that is the subject of the present invention, when the upper corner of the bag is cut, air is introduced into the inside of the bag, and the liquid level of the content liquid is lowered by gravity while trying to spread in the front-rear direction. The spread is limited by the top seal portion at the upper edge.

  The present invention was made paying attention to the configuration peculiar to such a simple bag container with a palm roof structure, and has a raised seal portion extending downward from the top seal portion at substantially the central portion except for the left and right sides of the top seal portion. Since it was formed, when the cut line was cut, when the front side part and the back side part below the bulge seal part were tensioned, the above-mentioned spread was restricted and the outer part was loosened, and the contents that flowed into the loose part The pressure of the liquid forms a substantially V-shaped bulge that surrounds the raised seal portion from below, and the spout 12 is forcibly opened by the spring elasticity of the V-shaped bulge. Even if the content liquid in the main body decreases, the opening state of the spout can be maintained by the V-shaped bulge and smooth pouring can be continued.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
1 is a front view showing an example of a state in which the opened simple bag container of the present invention is folded into a planar shape, and FIG. 2 is a perspective view of a state in which a spout is formed in the bag container shown in FIG. 3 is a cross-sectional view taken along line AA in FIG. 2, FIG. 4 is a cross-sectional view taken along line BB in FIG. 2, and FIG. 5 is a cross-sectional view taken along line CC.

  As shown in these drawings, the basic structure of the simple bag container of the present invention is the same as that of the conventional simple bag container shown in FIGS. That is, in this embodiment, a substantially central portion of one flexible resin film is folded in a W shape so that the front side portion 100 and the back side portion 101 are overlapped, and side seals are formed on both left and right edges of the front side portion 100 and the back side portion. The bottom portion 2 is provided to form a bag body having the bottom portion 102 and the bottom portion 2 is provided with the lower edge seal portion 6 at the lower edge of the bottom portion 102. Left and right W bottom seal portions 9 that are obliquely sealed from the intersection of both ends and the side seal portion 3 to the two valley fold lines 8 at the W bottom portion are provided and filled with the content liquid. When the upper end opening line is sealed with the top seal 5, the lower part of the bag body is formed in a substantially rectangular tube shape, and the upper part is configured to have a palm roof structure in which the upper part is gradually inclined inward.

  In the present embodiment, in the bag container having the above-described configuration, a cut line C that obliquely cuts one corner portion where one end of the top seal portion 5 and one end of the side seal portion 3 intersect is provided. A bulge seal portion 4 extending downward from the top seal portion 5 and bulging is formed in a substantially central portion excluding the left and right sides of the top seal portion 5 by thermocompression bonding or the like.

  In the above configuration, the embodiment shown in FIG. 1 and FIG. 2 is provided with a cut line C over a range of slightly less than 1/3 from the left end, and has a length of slightly over 1/3 continuously to the right end of the cut line. Although the one in which the downward trapezoidal raised seal portion 4 is formed is shown, this configuration is the best mode of the present invention, and the present invention is not limited to such a configuration.

  That is, the formation of the bulge seal portion 4 is to emphasize a substantially V-shaped bulge surrounding the bulge seal portion from below when the cut line C is cut as in the prior art. As long as it has, it can be changed arbitrarily. For example, as shown in FIG. 7 (a), a space is provided between the right end of the cut line C and the left end of the raised seal portion 41. As shown in FIG. 7 (b), only the left end is inclined. As shown in FIG. 4C, a triangle provided with a ridge seal part 43 having a downward triangle as shown in FIG. 2C, and a triangle with a downward apex as shown in FIG. As shown in FIG. 4E, the one provided with the arc-shaped raised seal portion 45, and the one protruding narrowly only at the substantially central portion of the top seal portion 5 (see FIG. The shape can be changed to any shape that emphasizes the V-shaped bulge.

  Since the bag container of the present embodiment has the above-described configuration, when the content liquid is filled therein, the top seal portion is sealed and the inside of the container is sealed, the content liquid sealed in the inside is fixed. A bulge with a low height that is substantially V-shaped is formed in the portion of the palm roof structure while maintaining the height level and based on the dimensional difference between the width of the top seal portion and the trunk portion.

  When the cut line is cut in this state, outside air is introduced into the container and the liquid level is lowered while spreading the inner solution in the front-rear direction, but the spread is formed between the front side portion and the back side portion below the raised seal portion 4. The flexible resin film that is restricted when the tension is applied to the outside and that loosens on the outside thereof, and the contents liquid flows into the loosened portion to form a bulge 10 that emphasizes the V-shaped bulge, thereby forming the emphasized bulge 10. The spout 12 can be opened largely by its own spring elasticity and the internal pressure based on the gravity of the content liquid. That is, in the injection state in which the container is inclined, the spout 12 can be greatly opened by the spring elasticity and the internal pressure acting as a force that spreads the lower edge portion of the spout 12.

  And since this spout 12 has the tip of the bulge seal part 4 as the inclined edge 4, when the bulge part without the inclined edge is provided, as shown by the chain line in FIG. 100 and the back-side portion 101 are in close contact with each other, and an ineffective portion can be prevented from being generated. For this reason, appropriate positions (for example, right and left side seal portions 3) (for example, When the fingertip is held close to the bottle mouth of the main body container, the bag container is tilted and the inner solution is poured into the main body container, outside air is naturally introduced from the upper part of the spout 12. It can be poured very smoothly, so that it can be easily refilled to the end without deformation or contraction of the bag container. In other words, according to the present embodiment, the tip of the raised seal portion 4 is provided with the inclined edge 4, so that the ineffective portion can be prevented and the spout 12 can be prevented from being crushed by water pressure.

  In the case of a bag container having a relatively large capacity such as a laundry detergent, for example, a 600 ml or 800 ml bag container, if the right and left side seal portions are pinched with the fingertips and tilted, the weight of the content liquid will cause the The part may be bent. The embodiment shown in FIG. 1 shows an example in which countermeasures are taken in such a case, and a crescent-shaped reinforcing seal portion 13 that reaches the bottom from the lower end position of the spout 12 on the inner side of both side seal portions 3, That is, it gradually widens at the position of about 1/3 from the upper end point, maintains its width for about 1/3 below it, and gradually narrows for about 1/3 below it. The reinforcing seal portion 13 having a shape reaching the side seal portion is provided, and the container is not bent even if the container is tilted and poured out by pinching the side seal portion including the reinforcing seal portion. . Further, the V-shaped bulge 10 shown in FIG. 1 occurs when the content liquid is filled as shown in FIG. 2, and does not occur in FIG. 1 in which the simple bag container is folded into a flat shape. Although not shown, it is shown for easy understanding when viewed in plan.

  As described above, according to the present invention, when the cut line is cut, [1] the spout is opened in a round shape, and [2] outside air naturally flows from the upper end of the spout to smoothly inject the content liquid. [3] There is no deformation or shrinkage of the container even in the process of emptying the container as the content liquid decreases, and [4] these are combined and poured from the rigid container. It is possible to obtain a simple bag container having a function which is almost the same as that of taking out.

It is a front view which shows an example of the state which folded the simple bag container of this invention opened flatly. It is a perspective view in the state where the spout was formed in the bag container shown in FIG. 1 filled with the content liquid. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is CC sectional view taken on the line of FIG. It is operation | movement explanatory drawing by the inclined edge of this embodiment. (A) thru | or (e) of FIG. 7 are all explanatory drawings of the principal part which shows the modification of this invention. It is a front view of the state which showed the conventional simple bag container and was folded by planar shape. It is a perspective view of the state which filled the contents liquid in the bag container shown in Drawing 8, and formed the spout. FIG. 10A is a schematic longitudinal sectional view showing each part in a state of being folded into a planar shape, and FIG. 10B is a schematic longitudinal sectional view showing each part in a state in which the content liquid is filled.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 ... Front side part, 101 ... Back side part, 102 ... Bottom side part, 1 ... Upper end opening part, 2 ... W bottom part, 3 ... Side seal part, 4 ... Raised Seal part, 4 '... inclined edge, 5 ... top seal part, 6 ... lower edge seal part, 7 ... mountain fold line, 8 ... valley fold line, 9 ... W bottom Seal part, C ... cut line, 10 ... V-shaped bulge, 12 ... opening, 13 ... reinforced seal part.

Claims (3)

The front side part and the back side part made of a flexible resin film are overlapped, the lower end edge thereof is integrally joined by the W bottom part, and the left and right side edges of the front side part and the back side part are integrally sealed by the side seal part and the upper end Consists of a bag with an open edge and is normally folded into a flat shape, but when filled with the contents liquid and sealed at the top opening edge with a top seal part, the lower part forms a cylinder and the upper part is a palm roof In a simple bag container having a three-dimensional shape inclined to the shape,
Provided with a cut line that diagonally cuts one corner where one end of the top seal portion and one end of the side seal portion intersect, and downward from the top seal portion at substantially the center except for the left and right sides of the top seal portion A simple bag container characterized by forming a raised seal portion extending in a straight line.   The simple bag container according to claim 1, wherein the raised seal portion has a downward trapezoidal shape in which both ends thereof are inclined obliquely. The front side part and the back side part made of a flexible resin film are overlapped, the lower end edge thereof is integrally joined by the W bottom part, and the left and right side edges of the front side part and the back side part are integrally sealed by the side seal part and the upper end Consists of a bag with an open edge and is normally folded into a flat shape, but when filled with the contents liquid and sealed at the top opening edge with a top seal part, the lower part forms a cylinder and the upper part is a palm roof In a simple bag container having a three-dimensional shape inclined to the shape,
Provided with a cut line that diagonally cuts one corner where one end of the top seal portion and one end of the side seal portion intersect, and downward from the top seal portion at substantially the center except for the left and right sides of the top seal portion A ridged seal portion extending to the bottom is formed, and a crescent-shaped reinforcing seal portion extending from the lower end position of the spout formed by the cut line to the vicinity of the bottom portion is further provided inside the side seal portion. Bag container.

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