JP2011246174A - Easily openable packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily openable packaging bag for a consumer to open easily without fail as to a packaging bag formed with a notch (4) and an open auxiliary line (5) in the spout area (2) formed in one top corner area of the bag (1).SOLUTION: An open auxiliary line (5) is diagonally provided on this bag (1) toward the end side seal part (3Y) through a spout (2a) from a notch (4) provided at the beginning side seal part (3X) of a discharge area (2). The line (5) includes a group of parallel lines comprising long lines (5L), (5L) which are both on the outside and short lines (5S) positioned on the inside of them. The beginning of the lines (5L), (5L) starts on the outside edge of the seal part (3X) and the end of the lines reaches the outside edge of the seal part (3Y). The beginning of the lines (5S) starts in an area which is 2 mm or more away from the tip end of the notch (4) and is in the inside edge of the seal part (3X). The end edge of the short lines (5S) reaches the outside edge of the seal part (3Y).

Description

The present invention relates to an easily openable packaging bag in which a spout region serving as a spout for contents is formed at one corner of an upper region of the bag, and a notch and an opening assist line are formed in the spout region. is there.

(Packaging bag for refill)
As packaging bags, those that are used for refilling the contents into other containers (particularly containers such as bottles with discharge tools) have become widespread. Packaging bags for this purpose greatly contribute to a reduction in the volume of waste, and there are advantages that consumers can purchase refills at a lower price. This refillable packaging bag attracts consumers' attention when it is displayed at the store, and it can be placed on the floor or sink in the middle of refilling work. A pouch) is usually used.

(Installation of spout area)
In the packaging bag for refilling described above, in order to facilitate refilling into another container, a spout region is provided at one corner of the upper region of the bag, and the spout region is opened to pour the contents. Often used as an exit.

At this time, among the seal portions on the upper side and the side sides on the bag periphery of the spout region, a notch is provided in the seal portion on the opening start end (usually the seal portion on the upper side of the bag), and An opening assist line is also provided by irradiating a laser beam from the notch to a seal portion on the side that is the end of opening through a portion serving as a spout.

(Patent Document 1)
In Japanese Patent Laid-Open No. 2001-58655 (Patent Document 1), a notch 6 is provided in the side edge welded portion 4 of the bag, and one or more opening lines 7 by a laser or the like are provided from the notch 6 toward the upper side of the bag. The packaging bag provided is shown (see claims, paragraphs 0007, 0013).

(Patent Document 2)
JP 2003-276744 A (Patent No. 4173312) (Patent Document 2)
In a bag body provided with a notch 14 serving as a starting point for opening, and an opening assisting line 15 formed continuously or discontinuously with the notch 14, in the vicinity of the tip of the opening assisting line 15 on the notch 14 side portion
A bag body is shown that is formed so that the direction of 15a is different from the direction of the force applied to the notch 14 (for example, formed in a semicircular shape) (see claims 1 to 4, paragraphs 0025 and FIGS. 3 to 7). ).

(Patent Document 3)
In Japanese Patent Application Laid-Open No. 2007-55636 (Patent Document 3), the upper seal portion 12 between the spout 10 and the upper side 8 starts from the upper side 8 of the packaging bag 1 and enters the flow path 11 of the spout 10. A notch 20 having a planar shape that extends obliquely upward along the edge and further changes its direction at the bent portion 25 so that the end portion 26 of the notch 20 extends outwardly of the packaging bag 1 in parallel with the lower side 9. In other words, “J-shaped” notch 20
) ”, And the two films surrounding the spout 10 are provided with two unsealing guide lines 30 each made of a laser half-cut groove, separated from the notch 20 and extending in the end portion 26 of the notch 20. The unsealing guide line 30 is provided along the parallel portion extending parallel to each other over the entire width of the flow path 11.
A packaging bag 1 is shown having an opening 31 that opens in the shape of a letter C from the end of the opening of the parallel portion 31 toward the end 26 of the notch 20 (summary, claim). 1). A packaging bag with a spout in which at least one opening guide auxiliary line 33 made of a laser-formed half cut groove is formed between two half cut grooves constituting a parallel portion of the opening guide line 30. (See claim 4, paragraph 0045, FIG. 11).

(Patent Document 4)
Japanese Unexamined Patent Publication No. 2009-57092 (Patent Document 4) discloses a convex portion 1d surrounded on three sides by a tip seal portion 1q, side seal portions 1p and 1r, and a surface on the tip portion side of the convex portion 1d. A half-cut line 1g consisting of a linear groove extending without crossing the side seal portions 1p, 1r, and a half-cut line 1g at the side seal portions 1p, 1r. A pouch container is shown that includes a perforation 1h that crosses the end of the side seal and cuts out part of the side seal portions 1p, 1r from the side to reduce the width of the side seal portions 1p, 1r. (See summary.) Here, the half-cut line (opening guide line) 1g is provided in the embodiment in such a manner that three parallel lines are provided close to each other, but may be linear or curved. It can be formed (see paragraphs 0024-0029).

(Patent Document 5)
Japanese Patent Application Laid-Open No. 11-43160 (Patent Document 5) discloses a tapered nozzle in which an outlet 6 is formed at the end of the upper edge 4b of the pouch container 1 to discharge the contents by cutting the tip 5a. A bag having a structure in which a portion 5 is protruded is shown (Claim 1), and a configuration in which a laser cut is provided in the nozzle portion 5 as a cutting guide portion is also mentioned (paragraph 0020).

(Patent Document 6)
Japanese Patent Application Laid-Open No. 2003-54577 (Patent Document 6) discloses a notch 1 provided at an end edge portion of a bag body and a half cut formed on the surface of the bag body from the end edge portion in the opening direction of the bag body. An opening assisting line 2 that is a line, and a tear direction guide line 3 that gradually approaches the opening assisting line 2 as it is separated from the edge of the bag body, and the notch 1 is the opening assisting line. An easy-opening means is shown which is positioned between 2 and the tearing direction guide line 3.

JP 2001-58655 A JP 2003-276744 A JP 2007-55636 A JP 2009-57092 A Japanese Patent Laid-Open No. 11-43160 JP 2003-54577 A

Among the above-mentioned patent documents, the inventions described in Patent Document 2 and Patent Document 3 are considered to be background technologies to be compared with the present invention.

(Patent Document 2)
Claims 2 to 4 of Patent Document 2 include a tip on the notch 14 side and an opening assist line on the notch 14 side.
The aspect formed discontinuously so that it may have a space | interval of 0.3-0.8 mm between the front-end | tips of 15 side is shown (FIGS. 5-7). According to this aspect, the opening assist line 15 is applied when force is applied to the notch 14 by hand.
The risk of cracking along the opening assisting line 15 by an external force such as an impact can be reduced.

However, the operation when starting the tearing from the notch 14 will be described with reference to FIG. 5 of Patent Document 2 as an example. The two parts sandwiching the notch 14 at the top of the bag are pinched with the fingertips of the left and right hands . In addition to trying to overcome the initial resistance by spreading in the left-right direction, there are many cases of trying to overcome the initial resistance by pinching the two places with the fingertips of the left and right hands and tearing them in the front-rear direction of the figure. It is also considered that there are many cases where a twisting operation in which both of them are mixed is performed. Therefore, considering that the person who purchases the packaged product for refilling is a general consumer and is not accustomed to opening, is it possible to smoothly transfer from the notch 14 to the opening start end of the opening assisting line 15? Uncertainty remains.

(Patent Document 3)
In Patent Document 3, a notch 20 formed of a “J-shaped slit” (other than the uncut portion 27 of about 0.5 to 1.5 mm is slit) in order to tear parallel to the lower side 9 of the bag. Adopting a unique notch structure and providing a J-shaped end of the notch 20
26 is directed parallel to the bottom side 9 of the bag, and the tear line from the end 26 is opened in the shape of a square of the two opening guide lines 30, 30 (half-cut grooves) as shown in FIG. It is led to the opening part 32, and it is going to transfer. As mentioned earlier, the two opening guide lines 30,
An embodiment in which at least one opening guide auxiliary line 33 (half cut groove) is provided between 30 (half cut grooves) is also shown.

From “Terminal portion 26 of J-shaped notch 20” in Patent Document 3 to “Two opening guide lines 30, 30”
(The opening guide auxiliary line 33 may be provided between the guide lines 30 and 30) The transfer mechanism to the C-shaped opening 32 "has a tear line for opening parallel to the lower side 9 of the bag. It is a special device to make it. However, because the notch 20 has a unique shape called a J-shaped slit, the location where the finger is gripped at the time of opening and the location where the end 26 of the notch 20 moves to the opening guide line 30 side is considerably separated. As a result, there is a concern in terms of smooth opening when handled by general consumers. Further, the notch 20 formed of the J-shaped slit is literally a slit-shaped through hole except for the uncut portion 27, so that the upper seal portion 12 is unstable in the upper region of the bag, and the packaging During transportation, handling, or display at a store, it is easy to get caught at the slit, and there is a possibility that it may be accidentally opened or the uncut portion 27 may be cut.

(Object of invention)
Under such a background, the present invention is such that a spout region serving as a spout for contents is formed at one corner of the upper region of the bag, and a notch and an opening assist line are formed in the spout region. To provide an openable packaging bag, and in particular, to provide an easily openable packaging bag that can be opened easily and without failure by a consumer without the risk of erroneous opening in the handling process of the package. It is intended.

The easy-open packaging bag of the present invention is
A bag (1) in which necessary portions at the periphery of the front and back sheets (1A) and (1B) are sealed, and one corner of the upper region of the bag (1) is a spout (2a) for contents when opened. Formed in the spout area (2)
Of the seal part (3) on the upper side and the side part at the bag periphery of the spout region (2), the seal part serving as the opening end is the start side seal part (3X), and the seal part serving as the end of opening is the seal part. When the end seal portion (3Y), the start end seal portion (3X) is provided with a notch (4) serving as an opening start end,
Further, from the opening start end portion of the start end side seal portion (3X) provided with the notch (4), the end end seal portion (3Y) is opened via the spout (2a). An opening assist line (5) by irradiation of laser light is provided in the oblique direction of the bag (1) toward the end portion,
Here, the opening assisting line (5) has at least one long line (5L), (5
L) and at least one short line (5S) located inside the long lines (5L) and (5L) on both outer sides,
The long lines (5L) and (5L) located on both outer sides of the long lines (5L) and (5L) are located at the outer edge of the start-end side seal portion (3X) and the end thereof is the outer edge of the end-end seal portion (3Y). That you have reached
On the other hand, the short line (5S) located inside the long lines (5L) and (5L) on both outer sides is separated by 2 mm or more from the tip of the notch (4) at the start end side seal portion (3X). Is located at a position from the position to the inner edge of the start end side seal portion (3X), and the end thereof is the end side seal portion (3
Reaching the outer edge of Y),
It is characterized by.

According to the present invention, from the manufacturing stage of the packaging bag to the filling stage of the contents into the packaging bag, the distribution stage of the packaging body, and further the stage of opening the packaging body in the hands of the consumer Until
It is possible to provide an easily openable packaging bag that can be opened unscheduled and that allows a consumer to open the spout region of the package easily and without failure.

  The present invention will be described in detail below.

(Basic structure of bag (1))
The easy-open packaging bag of the present invention consists of a bag (1) in which the peripheral portions of the front and back sheets (1A) and (1B) are sealed, and one corner of the upper region of the bag (1) is opened. It is sometimes formed in a spout region (2) that becomes a spout (2a) for the contents. The upper side of the bag (1) other than the spout area (2) has an opening (6), and after the contents are filled from the opening (6), the opening (6) is sealed, It becomes a package.

In addition, the portion that becomes the spout (2a) of the spout region (2) is filled with straws, provided with a shape-retaining material such as a rib, and bulged by vacuum forming, pressure forming, embossing, etc. By putting it in, the pouring property (refillability) can be improved.

The front and back sheets (1A) and (1B) of the bag (1) have a basic layer structure of “base layer / sealant layer”, where the base layer is the outer layer side of the bag (1) and the sealant layer is the bag ( It becomes the inner layer side of 1).

Examples of substrate layers are biaxially stretched polyester film (PET), biaxially stretched nylon film (ONY), unstretched nylon film, biaxially stretched polypropylene film (OPP), unstretched polypropylene film, cellulosic film, synthetic paper (Polypropylene-based multilayer synthetic paper and the like), metal foil (aluminum foil (AL) and the like), and the like. A nylon film or a polyester film is a resin that can easily absorb laser light, and thus is a particularly preferable film as a base material layer. The base material layer may be composed of two or more layers. The base material layer may have a gas barrier resin layer, an adhesive resin layer, an anchor coating layer, a vapor deposition layer (metal vapor deposition layer or ceramic vapor deposition layer), a printing layer, a top coat layer, and the like. The thickness of the base material layer is arbitrary as long as a predetermined strength can be obtained, but is often about 12 to 120 μm, for example.

As the sealant layer, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE),
Polyethylene resins such as ethylene-vinyl acetate copolymer (EVA), ethylene-unsaturated carboxylic acid ester copolymer, ethylene-unsaturated carboxylic acid copolymer, ionomer, ethylene-propylene copolymer; And various resin layers having heat sealing properties. The sealant layer may also be composed of two or more layers. The thickness of the sealant layer is not limited, but is about 10 to 250 μm, especially 20 to 200 μm.
It is often about m.

The lamination between each layer is performed by a method such as a dry laminating method, a wet laminating method, a casting method, a sand laminating method, a coextrusion method, an extrusion coating method, and a printing method, except in the case of forming a vapor deposition layer.

(Concrete structure of bag (1))
Of the upper side and side side seal portions (3) at the bag periphery of the spout region (2), the seal portion serving as the opening start end is the start end side seal portion (3X), and the seal portion on the side serving as the end of opening Is referred to as a terminal-side seal portion (3Y).

(Notch (4))
In the bag (1) of the present invention, the start end side seal portion (3X) is provided with a notch (4) serving as an opening start end. In this case, as shown in FIGS. 1 and 2, the starting end side seal portion (3X) is provided with a recess (d) (particularly a recess (d) to which a fingertip can enter), and the bottom or wall portion of the recess (d). It is preferable to provide a small notch (4) in both the ease of tearing and the design. However, depression (d)
The notch (4) may be provided in the start end side seal portion (3X) without providing the.

(Opening auxiliary line (5))
Furthermore, from the opening start end portion of the start side seal portion (3X) where the notch (4) is installed, the opening end portion of the end side seal portion (3Y) is directed through the spout (2a). Thus, an opening assist line (5) by laser light irradiation is provided in an oblique direction of the bag (1). The "oblique direction" at this time is
Start side seal part (3X) is the upper side and side side seal part (3
), There are cases of “diagonally downward” and “diagonally upward”.

As mentioned above, the front and back sheets (1A) and (1B) of the bag (1) have the basic layer structure of “base layer / sealant layer”, and the base layer is the outer layer side of the bag (1). The sealant layer is on the inner layer side of the bag (1), but the laser light is easily absorbed by the base material layer on the outer layer side of the bag (1), and is like a polyolefin resin on the inner layer side of the bag (1). Since the sealant layer is difficult to absorb, the opening assist line (5) by the laser light irradiation is a half-cut line.

The opening assist line (5) has at least one long line (5L) and (5L) located on both outer sides and at least one long line (5L) and (5L) located on both outer sides. It consists of parallel lines composed of short lines (5S).

At least one long line (5L) and (5L)
・ One on the outside and one on the other,
・ One outside is two and the other is one,
・ One on the outside and two on the other,
-Two on one outside and two on the other
Means.

At least one short line (5S) means one to a plurality of lines, preferably 1 to 3, and especially 2 lines. A “parallel line group” refers to a group of lines in which the spacing between each line is substantially the same. Each line is preferably a straight line, but may be a curve such as a gentle curve line. A polyline is not appropriate.

The long lines (5L) and (5L) located on both outer sides of the opening assisting line (5) are located at the `` outer edge '' of the start-end side seal portion (3X) and the end ends thereof. The end seal part (3Y)
It is configured to reach the “outer edge”. The tip of the notch (4) provided on the start side seal part (3X) is located between the long lines (5L) and (5L) located on both outer sides, and the tip of the notch (4) is the opening start end. Therefore, there is no situation where the opening line (tearing line) at the time of opening protrudes outside the long lines (5L) and (5L).

On the other hand, the short line (5S) located inside the long lines (5L) and (5L) on both outer sides is separated by 2 mm or more from the tip of the notch (4) at the start end side seal part (3X). Located at the position from the position to the inner edge of the start side seal portion (3X), and the end thereof is the end side seal portion (3
It is configured to reach the outer edge of Y). Therefore, the seal width of the part where the notch (4) is provided on the start end side seal part (3X) is 2 mm in the direction of forming the opening assisting line (5) when viewed from the tip of the notch (4).
Take care that the above is satisfied (for example, 2 to 12 mm, preferably 3 to 10 mm).
.

In this way, there is a slight distance between the tip of the notch (4) and the start of the short line (5S), so the stage from filling the bag to filling the contents into the bag and distributing the package Unexpected opening is prevented through the stage, and further through the stage when the package is in the hands of the consumer. On the other hand, since the end of the short wire (5S) reaches the `` outer edge '' of the seal part (3Y) on the end side, when opening is started from the notch (4) that is the opening end, long wires (5L), (5L) Or a smooth opening is made along any of the short lines (5S).

(The vertical structure of the bag (1))
The bag (1) preferably has a structure that can be suspended. The means for allowing to stand is arbitrary, but a typical means is to form the bottom of the bag into the bottom gusset (g). The bag (1) does not necessarily need to be able to hang, and may be a gusset shape, a flat bag, a palm-sacked bag, or the like.

(Packaging body, contents)
The bag (1) is filled with contents from the opening (6), and then the opening (6) is sealed by heat sealing to form a package.

As long as the content can be discharged from the spout (2a) of the bag (1), it can be any liquid from a low-viscosity liquid to a high-viscosity paste. Examples of contents range from liquid detergents, shampoos, rinses, bath additives, seasonings, foods and beverages, pet foods, oils, deodorants, adhesives and paints.

(Method for manufacturing packaging bags)
Taking a 2-catch method as an example for manufacturing packaging bags,
-The front and back sheets having a width corresponding to the height of two bags (1) of the desired height are intermittently run in a state where they are overlapped,
・ Insert a double-folded tape (punch holes in the width of the bag (1) in advance with gaps between the two sides of the front and back sheets). At the same time, heat sealing is performed using the bottom gusset seal bar to form the bottom gusset seal when it is made into a bag (1). ),
・ Also, use the seal bars to form both sides when the bag (1) is used, and heat seal in the width direction of the front and back sheets to form the bag (1). To form
Subsequently, these seals are cut, trimmed or punched, and cut along the center line in the running direction of the front and back sheets to form individual bags (1).
Is made by

  The following examples further illustrate the invention.

Example 1
FIG. 1 is a front view showing an example of a packaging bag of the present invention.
FIG. 2 is an enlarged view of the spout region (2) of the packaging bag of FIG.

As a base material layer, a sheet having a layer structure of “biaxially stretched nylon film (ONY) / printing layer having a thickness of 15 μm” and a sheet having a layer structure of “biaxially stretched polyester film (PET) / aluminum vapor deposition layer having a thickness of 12 μm”. And by bonding these sheets through an adhesive layer, the “biaxially stretched nylon film (ONY) / printing layer / adhesive layer / aluminum deposition layer / biaxially stretched polyester film (PET)” Thickness of about 30 μm with layer structure
A base material layer was prepared. Next, by laminating a linear low density polyethylene layer having a thickness of 140 μm as a sealant layer on the base material layer by a dry lamination method,
A long sheet consisting of “base material layer / sealant layer” was obtained.

Cut the long sheet obtained above in half (cut into half the width of the sheet) and align the inner surfaces of the half-cut sheets, and then apply laser light to the corresponding areas on the front and back of the combined sheets. Irradiation was performed to form an opening assist line (5) as described below. In addition, by cutting another long sheet obtained above into a predetermined width and folding it into a "<" shape, the bottom gusset
(g) A forming tape was prepared.

Next, using the above-mentioned opening assist line (5) formed sheet and bottom gusset forming tape, bag making, heat sealing to necessary parts, cutting and trimming to individual bags are performed according to conventional methods. Thus, a large number of the packaging bags shown in FIG. 1 were produced. The size of each bag (1) is 200 mm in height and 140 mm in width. A portion indicated by hatching in FIG. 1 is a heat seal portion.

The bag (1) of Example 1 is composed of front and back films (1A) and (1B), and the bottom of the bag (1) is composed of a bottom gusset (g) so that it can stand up. Film (1A), (1B) and bottom gusset (g)
The film for formation is composed of a sheet having the layer structure of “base layer / sealant layer” described above.

In FIG. 1, a corner (a circled portion) of the upper region of the bag (1) is a spout region (2), and this portion becomes a spout (2a) for contents when opened.

In the first embodiment, among the seal portion (3) at the bag periphery of the spout region (2), the upper side seal portion is the start side seal portion (3X), and the side side seal portion is the end side seal portion. (3Y). The start end side seal portion (3X) is provided with a recess (d) that allows a fingertip to enter, and a small notch (4) is provided at one corner of the bottom portion of the recess (d). This notch (4) is the opening end.

From the opening start end portion of the top side seal portion (3X) on the upper side where the above notch (4) is installed, via the portion serving as the spout (2a), the side end side seal portion (3Y) An opening assist line (5) is provided diagonally below the bag (1) toward the opening end of the bag (not only on the front film (1A) but also on the corresponding part of the back film (1B)) Provided). This opening assist line (5) consists of a total of 4 parallel lines (straight line group). Both outer lines are long lines (5L) and (5L), and the inner two lines are short lines (5S) and (5S). It consists of These four lines are all half-cut lines formed by laser light irradiation.

In Example 1, the seal width of the portion provided with the notch (4) of the start end side seal portion (3X) is 5 mm in the direction of forming the opening assisting line (5) when viewed from the tip of the notch (4). (Seal width w in FIG. 2
Is set to 5 mm).

Of these, the long lines (5L) and (5L) located on both outer sides are located at the outer edge of the start side seal part (3X) at the start end and reach the outer edge of the end side seal part (3Y). The tip of the notch (4) is located between them. And 2 located inside these long lines (5L), (5L)
The short ends (5S) and (5S) of the book have their start ends positioned at the inner edge of the start end side seal portion (3X) and their ends reaching the outer edge of the end end seal portion (3Y). In other words, the short line (5S), (5S) does not exist in the zone of the seal part (3X) on the start end side, so that the tear line from the tip of the notch (4) does not propagate unexpectedly. .

After filling 430 ml of shampoo as an example of the contents (in fact, water having a viscosity equivalent to that of the shampoo) into the large number of easy-open bags shown in FIGS. Aperture
(6) was heat sealed to form a package. An arrow indicating the tearing direction is printed on the four open auxiliary lines (5) in the spout area (2) on the front surface of the package, and refilling instructions are noted on the back.

While handing this package to the monitor, I was allowed to open as many as one on the spot. The monitor consists of a total of 30 men and women from their teens to their 60s. Each person handed a package and simply said, “Please open from this recess.” I didn't give any details on how to open it.

Despite the lack of explanation and a one-time opening test for each person, the notch
The result of the tear test starting from (4) was good. There were several cases in which the tear lines of the front and back films (1A) and (1B) slightly deviated when passing over the spout (2a), but even in that case, the tear lines are within the opening assist line (5). As a result, tear tears that could cause problems with smooth opening were not observed.

(Example 2)
FIG. 3 is an enlarged view of the spout region (2) showing another example of the packaging bag of the present invention.
In the second embodiment, the seal width of the portion provided with the notch (4) of the start end side seal portion (3X) is the same as that of the first embodiment, and the formation of the opening assist line (5) when viewed from the front end of the notch (4). It is set to be 5 mm in the direction (the seal width w in FIG. 2 is 5 mm), but the beginning of the short line (5S) located inside the long lines (5L) and (5L) on both outer sides is shown in FIG. In this way, it starts obliquely downward from a position where it enters 2 mm from the inner edge to the outer edge of the start side seal portion (3X) (position where it enters 3 mm from the tip of the notch (4) toward the inner edge). Also in the second embodiment, the tear line from the tip of the notch (4) does not propagate unexpectedly.

The easy-open packaging bag of the present invention can be suitably used for the purpose of smoothly refilling liquid containers, shampoos, seasonings and the like into other containers.

It is the front view which showed an example of the packaging bag of this invention. It is an enlarged view of the spout area | region (2) of the packaging bag of FIG. FIG. 5 is an enlarged view of a spout region (2) showing another example of the packaging bag of the present invention.

(1)… bag,
(1A), (1B) ... Sheets on both sides
(2)… Outlet area,
(2a)… Outlet,
(3)… seal part,
(3X) ... Start end side seal part, (3Y) ... Terminal side seal part,
(4)… notch,
(5)… auxiliary opening line,
(5L) ... long wire, (5S) ... short wire,
(6)… Opening
(d) ... depression,
(g)… Bottom gusset,
(w)… Seal width

Claims (1)

A bag (1) in which necessary portions at the periphery of the front and back sheets (1A) and (1B) are sealed, and one corner of the upper region of the bag (1) is a spout (2a) for contents when opened. Formed in the spout area (2)
Of the seal part (3) on the upper side and the side part at the bag periphery of the spout region (2), the seal part serving as the opening end is the start side seal part (3X), and the seal part serving as the end of opening is the seal part. When the end seal portion (3Y), the start end seal portion (3X) is provided with a notch (4) serving as an opening start end,
Further, from the opening start end portion of the start end side seal portion (3X) provided with the notch (4), the end end seal portion (3Y) is opened via the spout (2a). An opening assist line (5) by irradiation of laser light is provided in the oblique direction of the bag (1) toward the end portion,
Here, the opening assisting line (5) has at least one long line (5L), (5
L) and at least one short line (5S) located inside the long lines (5L) and (5L) on both outer sides,
The long lines (5L) and (5L) located on both outer sides of the long lines (5L) and (5L) are located at the outer edge of the start-end side seal portion (3X) and the end thereof is the outer edge of the end-end seal portion (3Y). That you have reached
On the other hand, the short line (5S) located inside the long lines (5L) and (5L) on both outer sides is separated by 2 mm or more from the tip of the notch (4) at the start end side seal portion (3X). Is located at a position from the position to the inner edge of the start end side seal portion (3X), and the end thereof is the end side seal portion (3
Reaching the outer edge of Y),
Easy-open packaging bag characterized by