JP2009255959A - Packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag having a tear propagation interrupting action, securely guiding a tear line in one direction, preventing a strip piece form being accidentally broken and further preventing waste from being produced due to separation of the strip piece. <P>SOLUTION: The packaging bag 1 has a spout through which the content is taken out, and the spout is formed by tearing a sealed part on a periphery of the bag 1 from an opening start point on the edge of one side of the sealed part of the periphery to open the storing section 4. A tear line formed by tearing the storing section 4 from the opening start point toward the edge of the other side includes a first stopper 8 for stopping the torn line after the formation of the spout, a second stopper 10 for stopping a torn line formed by tearing the bag from the first stopper to the edge of the other side of the sealed part, and a tear guide line 9 for guiding the tear line formed from the first stopper to the second stopper. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a packaging bag, more specifically, various kinds of objects to be stored in a sealed state so that the peripheral edges of sheets facing each other are overlapped and sealed, and surrounded by the sealed seal portion. And forming an opening that can take out an object to be contained in a part of the opening by opening the opening starting point at one side edge of the seal part and opening the receiving part. It is related with the packaging bag comprised by.

In general, liquid foods, powdered foods, beverages, seasonings, detergents, shampoos, cosmetics, etc., to be used for subpackaging and refilling, etc. are packaged in a sealing packaging bag called a pouch. ing. Such a packaging bag has an accommodating portion that can accommodate various objects to be contained in a sealed state so that the peripheral edge portions of the facing sheets are overlapped and sealed, and surrounded by the sealed seal portion. It is composed of the formed structure, and a three-sided pouch with a three-side peripheral part sealed is called a four-way pouch or the like with a four-sided peripheral part sealed.

In such a packaging bag, an opening start point portion called a notch is formed on one side edge of the seal portion at the peripheral portion, and the container portion is opened by tearing the opening start point portion as a starting point. A take-out port through which the object can be taken out is formed in a part of the containing portion.

Since such a packaging bag is to open the packaging bag by tearing from the opening starting point as described above, the bag surface is torn apart more than necessary when the packaging bag is opened, and therefore the contents to be contained There was a problem that the risk of spilling. In addition, the cut pieces that have been torn and separated become waste and must be disposed of separately. Especially in the outdoors, there are cases where such disposal processing is a problem.

Therefore, in view of such a point, for example, a patent application such as the following Patent Document 1 has been filed. In the invention described in Patent Document 1, as described in claim 1, the sheet material in which the base material layer and the sealant layer are laminated is overlapped with the sealant layer on the inner surface side, and the edge of the sheet material Adhering parts together to form a sealed bag, and in the packaging bag that is opened by tearing one side near the opening side starting from the adhesive part on one side, the front adhesive part in the tearing direction A tear stop line is formed on at least the base material layer of one of the sheet materials adhered to each other so as to intersect the tear direction in a plan view.

And in the packaging bag described in this patent document 1, when tearing and opening one side vicinity which becomes an opening side, the tear stop line provided in the adhesion part so that the front end of a tearing part cross | intersects a tearing direction When reaching the formation position, tear propagation is stopped and the tear piece is left on the bag surface. Therefore, the tear propagation can be surely stopped at the time of opening, and the tear piece portion can be reliably left on the bag surface.

However, in the packaging bag described in Patent Document 1 as described above, although tear propagation is stopped by the tear stop line, tearing from the tear stop line toward the other side opposite to the unsealing side is performed. In such a case, it cannot be torn accurately in one direction, and the excised piece may be cut out carelessly. Further, when tearing from the tear stop line toward the other side, tear propagation cannot be reliably stopped.

On the other hand, in the packaging bag described in this patent document 1, it is necessary to consider the formation position of the tear stop line. That is, when the tear stop line is formed close to the content outlet, the tear stop line can be reliably torn from the opening start point to the tear stop line, and the packaging bag can be opened reliably. However, the periphery of the take-out port cannot be largely cut, and as a result, there is a possibility that the object to be taken out from the take-out port cannot be taken out smoothly.

On the other hand, if the tear stop line is formed far away from the content outlet in order to largely cut the periphery of the outlet, the tear line from the opening start point to the tear stop line may not be reliably induced. The problem arises that the packaging bag may not be opened reliably.

As described above, the packaging bag described in Patent Document 1 has an effect and an effect of stopping the tear propagation at the tear stop line. However, the packaging bag is limited in the size of cutting around the outlet, and the cutting around the outlet is performed. If you try to make the dimensions larger, it may not be possible to open the package securely. On the other hand, when opening the packaging bag, the bag surface may be torn apart more than necessary, or the cut pieces that have been torn and separated may be discarded. It has not been possible to fundamentally solve the conventional problems such as

JP 2007-276823 A

The present invention has been made in order to solve such problems, and has the function and effect of the invention described in Patent Document 1 to stop tear propagation, and further has a cutting dimension around the bag outlet. The tear line is reliably guided in one direction, the cut piece is not cut inadvertently, and it is torn and separated to produce a cut piece that becomes waste. It is an object of the present invention to provide a packaging bag that is safe.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and accommodates an object to be enclosed so that peripheral edges of sheets facing each other are overlapped and sealed, and surrounded by the sealed seal part. An accommodating portion is formed, and the tearing portion is opened from the opening start point portion of one side edge of the seal portion at the peripheral portion, whereby the accommodating portion is opened and the object is taken out to a part of the accommodating portion. In the packaging bag configured to form a take-out opening, a tear line formed by tearing toward the other side edge starting from an opening start point on one side edge of the seal part A first stopper that stops after the formation of the second stopper, a second stopper that stops the tear line formed by tearing from the first stopper to the other side edge of the seal portion, and the first stopper There is provided a packaging bag characterized by comprising a tearing guide line for inducing a tear line formed toward the second stopper.

As the first stopper and the second stopper, for example, those formed by a substantially semicircular cut are employed. Moreover, as a tear guide line, a thing like a perforation is employ | adopted, for example.

As described above, the packaging bag of the present invention is configured to stop the tear line formed by tearing toward the other side starting from the opening start point on one side edge of the seal part after the first outlet is formed. Since it has two stoppers, a stopper and a second stopper for stopping a tear line formed by tearing from the first stopper to the other side edge of the seal portion, an outlet is formed. By forming the first stopper in a portion relatively close to the portion, the tear line from the opening start point is surely guided to the first stopper after opening the outlet, and the tear line is the first stopper. Therefore, the cut piece is not inadvertently divided, and the opening operation of the take-out port is also suitably performed.

Furthermore, since the second stopper is provided separately from the first stopper, the second stopper is separated from the first stopper and is located on the other side edge on the side opposite to the opening start point and the outlet. As a result, the tear line is not torn to the second stopper, so that the cut size of the cut piece around the outlet is not limited. There is no hindrance to the work for removing the object from the outlet, and the object can be easily taken out.

In addition, since the tear guide line as described above is formed between the first stopper and the second stopper, the tear line that has reached the first stopper from the opening start point is located at the position of the second stopper by the tear guide line. It is surely torn until reaching the position of the second stopper. Therefore, even when the tear line reaches the second stopper, it does not distort or meander, and the cut piece is not divided in the middle.

Furthermore, since the tear line is surely stopped at the position of the second stopper, it is not inadvertently torn from the position of the second stopper to the other end of the packaging bag opposite to the opening start point, There is an effect that a cut piece that becomes a waste is not generated by tearing and cutting.

Hereinafter, the packaging bag of one embodiment is explained according to a drawing. The packaging bag 1 of one Embodiment is comprised by the front side sheet | seat 2 of the front rectangular shape, and the back side sheet | seat 3 of the front rectangular shape, as shown in FIG. 1 thru | or FIG. The front sheet 2 and the back sheet 3 are made of a synthetic resin material. The kind of the synthetic resin is not particularly limited. For example, polyethylene, polypropylene, polyethylene terephthalate, polyamide, or those obtained by laminating these synthetic resin layers in a plurality of layers, and further to the synthetic resin layer as described above. In addition, a so-called aluminum laminate sheet or the like in which aluminum is laminated can be used.

As shown in FIGS. 2 to 5, the peripheral portions of the front side sheet 2 and the back side sheet 3 are sealed by heat sealing, ultrasonic sealing or the like, and the portion surrounded by the sealing portion of the peripheral portion is not sealed. An accommodating portion 4 having a space in which an object can be accommodated is formed between the upper sheet 2 and the lower sheet 3. In the present embodiment, the upper seal portion 5a, the side seal portions 5b, 5c, and the bottom seal portion 5d are formed on the top, bottom, and both sides of the packaging bag 1, respectively, so as to surround the accommodating portion 4. A packaging bag 1 in a form called a so-called four-way pouch is formed.

  The housing part 4 surrounded by the four seal parts 5a, 5b, 5c, and 5d is formed in a generally rectangular shape on the front, and only the upper left side thereof projects in a substantially semicircular shape. The formed portion is formed as an outlet forming portion 6 that forms an outlet 11 for taking out the object. A notch 7 that is an opening start point is formed on one side edge of the upper portion of the packaging bag 1 on the side of the outlet forming portion 6. This notch 7 is formed by a slit-like cut.

  Using the notch 7 as an opening start point, the upper seal portion 5a is formed on the tear line assumed when the upper seal portion 5a is torn from the one side edge where the notch 7 is formed toward the other side edge on the opposite side. A stopper 8, a perforation 9, and a second stopper 10 are formed.

More specifically, a first stopper 8 is first provided on the rear side of the outlet forming portion 6, that is, in the vicinity of the tear line traveling direction side. The first stopper 8 is for temporarily stopping the tear line to be torn starting from the notch 7, and is formed in a substantially semicircular shape so as to intersect the traveling direction of the tear line as shown in FIG. Has been.

  As shown in FIG. 1, the second stopper 10 is formed on a side relatively close to the other side edge of the packaging bag opposite to the notch 7 and the outlet forming portion 6 that are opening start points. The second stopper 10 is also for temporarily stopping the tear line, like the first stopper 8, and is formed in a substantially semicircular shape so as to intersect the traveling direction of the tear line. The second stopper 10 is formed smaller than the first stopper 8.

  A perforation 9 is formed between the first stopper 8 and the second stopper 10 as shown in FIG. The perforation 9 functions as a tear guide line so that the tear line once stopped by the first stopper 8 is further torn toward the second stopper 10. As shown in FIG. 1, one end side of the perforation 9 is connected to the substantially central portion 8a of the first stopper 8, and the other end side of the perforation 9 is connected to the upper edge portion 10a of the second stopper 10. It is connected.

  In such a packaging bag 1, the front sheet 2 and the back sheet 3 are formed in the same form. That is, the outlet forming portion 6, the notch 7, the first stopper 8, the perforation 9, and the second stopper 10 are formed on both the front sheet 2 and the back sheet 3, respectively. In the present embodiment, the front side sheet 2 and the back side sheet 3 will be described for the sake of convenience, although there is no particular distinction between the front and the back in terms of the properties or functions of the packaging bag 1 of the present embodiment called a pouch.

And the packaging bag 1 which consists of such a structure accommodates various to-be-contained objects, such as liquid food, powdery food, a drink, a seasoning, a detergent, a shampoo, cosmetics, in the accommodating part 4, and divides and wraps. It is used for a wide range of purposes such as for refilling. The type of the object to be stored is not questioned, but the degree of bulging of the storage part 4 varies depending on the type and amount of the object to be stored. 2 to 6, the object to be contained is not particularly shown, but actually, the object to be contained is filled between the front sheet 1 and the back sheet 2 before the packaging bag 1 is made. When the packaging bag 1 is completed, the object to be contained is already contained in the accommodating portion 4 by forming the upper seal portion 5a, the side seal portions 5b, 5c, and the bottom seal portion 5d. It is in a state of being accommodated in.

Next, the case of opening the packaging bag 1 as described above will be described. First, the packaging bag 1 in which the notch 7 is formed in the upper seal portion 5a of the packaging bag 1 with the notch 7 being the opening starting point as a starting point. Tearing from one side edge side to the other side edge side.

By tearing the upper seal portion 5a from the one side edge side to the other side edge side in this way, the upper seal portion 5a is torn to the position of the first stopper 8 as shown in FIG.
At this time, since the first stopper 8 is formed in a direction intersecting with the traveling direction of the tear line, the tearing is temporarily stopped at the position of the first stopper 8.

  As a result, as shown in FIG. 7, the outlet forming portion 6 is broken and the outlet 11 is formed. At this time, since the first stopper 8 is formed in a substantially semicircular shape in a direction intersecting the traveling direction, the tear line is reliably stopped at the position of the first stopper 8, Therefore, the cut piece 12 is not inadvertently separated from the packaging bag 1.

When the upper seal portion 5a is further torn toward the other edge side from the state where the first stopper 8 is torn as described above, a perforation 9 is formed while being connected to the first stopper 8. Therefore, the tear line is surely guided toward the other side edge along the perforation 9. When it is torn to the position of the second stopper 10, the tear line stops at the position of the second stopper 10. That is, since the second stopper 10 is also formed in a direction intersecting with the traveling direction of the tear line similarly to the first stopper 8, the tearing is surely stopped at the position of the second stopper 10.

As a result, the cut piece 12 is not inadvertently separated from the packaging bag 1 even when it is torn to the position of the second stopper 10. Therefore, it is possible to suitably prevent the cut pieces 12 from being generated as waste. Moreover, since the cut piece 12 is reliably removed at the take-out port 11 and the periphery thereof, the take-out operation is hindered when taking out the contained material from the take-out port 11. There is nothing.

  As described above, in this embodiment, the first stopper 8 and the second stopper 10 are provided in the packaging bag 1 so that the first stopper 8 is formed relatively close to the outlet forming portion 6. Then, it is possible to reliably perform the work of forming the outlet 11 by reliably tearing the portion from the notch 7 that is the opening start point to the first stopper 8 to open the outlet forming part 6, By forming the second stopper 10 at a location close to the other side edge side away from the one side edge side where the notch 7 and the outlet forming part 6 are formed, the peripheral part of the outlet 11 can be cut with a large size. It is possible to solve the conflicting problems which cannot be solved by the invention according to the above-mentioned conventional Patent Document 1 without causing any trouble in the work of taking out the object from the outlet 11.

  In the above embodiment, the other end side of the perforation 9 that functions as a guide cutting line is connected to the upper edge portion 10a of the second stopper 10, but the present invention is not limited to this, as shown in FIG. A perforation 9 may be connected to the lower edge portion 10 b of the stopper 10. Also in the embodiment of FIG. 9, the second stopper 10 is formed in a substantially semicircular shape in the direction of the tear line, that is, the direction intersecting with the direction in which the perforation 9 is formed. The tear line thus guided is surely stopped at the position of the second stopper 10. Therefore, it is preferable that the peripheral portion of the take-out port 11 can be cut with a large size, the work for removing the object to be contained from the take-out port 11 is not hindered, and the cut piece 12 is generated as waste. In the embodiment of FIG. 9, the effect that it can be prevented can be similarly produced.

  Moreover, in the said embodiment, although the 1st stopper 8 and the 2nd stopper 10 were formed by the substantially semicircle cut, the shape of the 1st stopper 8 and the 2nd stopper 10 is not limited to this. Absent. However, the formation of the tear line is preferably stopped by being formed in a substantially semicircular shape with respect to the traveling direction of the tear line.

  Further, in the above embodiment, the perforation 9 is formed as a tear guide line that guides the tear line from the first stopper 8 toward the second stopper 10, but means other than the perforation 9 is used as the tear guide line. It is also possible to adopt as.

  Furthermore, in the said embodiment, the front side sheet | seat 2 and the back side sheet | seat 3 which comprise the packaging bag 1 are what laminated | stacked polyethylene, polypropylene, polyethylene terephthalate, polyamide, or these synthetic resin layers in multiple layers, Furthermore, the said Although the case where what is called an aluminum laminate sheet etc. which laminated | stacked aluminum was used for the synthetic resin layer like, the material of the front side sheet 2 and the back side sheet 3 is not limited to this, Other than these It is also possible to use a synthetic resin.

Furthermore, in the said embodiment, although it was set as the structure of the form called what is called a four-way seal | sticker with which the upper part of the packaging bag 1, the both sides, and the bottom were sealed, it is not restricted to this, For example, an upper part and both sides It is also possible to adopt a configuration in a form called a so-called three-way seal in which the three sides are sealed, or the top, one side and the bottom are sealed. In short, it is only necessary that the seal portion is formed so as to surround the accommodating portion 4 that accommodates the object to be accommodated. Here, in the present invention, “the housing portion 4 is surrounded by the seal portion at the peripheral portion of the packaging bag 1” is not only surrounded by the four peripheral portions but also surrounded by the three peripheral portions. This includes the case where it is done.

  In addition, the design can be arbitrarily changed within the range intended by the present invention.

The front view of the packaging bag as one Embodiment. AA sectional view taken on the line AA of FIG. FIG. 3 is a sectional view taken along line BB in FIG. 1. The CC sectional view taken on the line of FIG. The DD sectional view taken on the line of FIG. The EE sectional view taken on the line of FIG. The front view which shows the state which tears to the position of a 1st stopper and opens a packaging bag. The front view of the packaging bag which shows the state torn to the position of the 2nd stopper. The front view of the packaging bag of other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging bag 2 Front side sheet 3 Back side sheet 4 Storage part 5a Seal part 5b Seal part 5c Seal part 5d Seal part 8 1st stopper 9 Perforation 10 2nd stopper

Claims (4)

  The peripheral portions of the facing sheets (1) and (2) are overlapped and sealed, and a storage portion (4) capable of storing an object to be stored is formed so as to be surrounded by the sealed seal portion, By taking the opening start point at one side edge of the seal part at the peripheral edge as a starting point, the container (4) is opened, and the container can be taken out into a part of the container (4). In the packaging bag configured to form the outlet (11), a tear line formed by tearing toward the other side starting from the opening start point of the one side edge of the seal part, The first stopper (8) to be stopped after the formation of (11), and the second stopper (10) to stop the tear line formed by further tearing from the first stopper (8) to the other side edge side of the seal portion. And the first scan Packaging bag characterized by comprising a tearing guide line for inducing a tear line formed toward the second stopper (10) from wrapper (8).   The packaging bag according to claim 1, wherein the first stopper (8) is formed by a substantially semicircular cut.   The packaging bag according to claim 1 or 2, wherein the second stopper (10) is formed by a substantially semicircular cut.   The packaging bag according to any one of claims 1 to 3, wherein the tear guide line is a perforation (9).

Images