JP2016166037A - Package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pillow-type package using a high-intensity packaging film, which can prevent a cutter blade from being worn and yet can be cut easily at one time.SOLUTION: A face with no back seal line 1a is set as a front side, and on the front side is provided a weakened line 11 extending from a top seal line 1b toward a bottom seal line 1c. The weakened line is constituted of an aggregation of fine through-holes in inverted V-shapes which penetrate through a base film. The site of the weakened line is lower in intensity than other sites, which allows the weakened line to be tore off by hands. As the weakened line is constituted of the aggregation of the fine through-holes, loads of a large volume of contents are scattered without being intensively applied to the through-holes. This can prevent a package from being broken carelessly although the package is provided with the through-holes that penetrate through the high-intensity base film.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a business package containing a gel-like content such as a large-capacity flower paste, jam, or rice cake.

  Conventionally, these gel-like contents are sealed and packaged in a pillow type large-capacity packaging bag using a high-strength packaging film. FIG. 10 (a) shows such a packaging body 1. This packaging body 1 forms a back seal line 1a by rounding one packaging film and sealing both ends thereof with a palm joint, The top seal line 1b and the bottom seal line 1c are formed so that the back seal line 1a is located on the back side, and the contents are sealed inside.

  When the packaging body 1 is opened and the contents are taken out, first, as shown in FIG. 10 (b), the packaging film on the surface side without the back seal line 1a is laterally moved along the top seal line 1b. Cut with a cutter, and then cut with a cutter in the vertical direction along the side edges 1d and 1e on both sides, as shown in FIG. And the content is taken out by making the site | part enclosed on these three sides by these vertical and horizontal cutting lines into an opening part.

  However, the packaging film used for the packaging body 1 is configured to include a tough base film, and it has not been easy to cut the tough base film at a time. For this reason, if the cut line is cut twice, a thin line-shaped section will be formed between the two cutting lines if the two cutting lines completely coincide with each other. There was a risk of contamination. In addition, since the tough base film is cut at a time, there is a problem that the cutter blade is severely worn.

  A packaging body is also known in which a notch is provided in the top seal line 1b and bottom seal line 1c of the packaging bag 1 for easy opening (Patent Document 1). There was a problem that it was difficult to take out the contents.

JP 2004-182267 A

  Accordingly, an object of the present invention is to provide a pillow-type package using a high-strength packaging film, which prevents wear of the cutter blade and can be easily cut at a time. .

That is, the invention according to claim 1 rolls the packaging film and seals both ends thereof to form a back seal line, arranges the back seal line on the back side, seals the upper and lower ends, and seals the top seal line and A package comprising a bottom seal line, wherein the package film includes a high-strength base film,
A surface without a back seal line is defined as a surface side, and a weakening line is provided on the surface side from the top seal line to the bottom seal line, and a set of fine through holes through which the weakening line penetrates the base film. It is comprised by this.

  Next, the invention according to claim 2 is the package according to claim 1, wherein the through-hole has a square shape.

  The invention according to claim 3 is the substrate package according to claim 2, wherein the width and height of the letter C are both 10 mm or less.

  The invention according to claim 4 is characterized in that the length of the weakening line is longer than 80% of the length between the top seal line and the bottom seal line. And a base material package.

  The invention according to claim 5 is the package according to any one of claims 1 to 4, wherein the weakening line is provided along side edges on both sides.

  The invention according to claim 6 is the package according to claim 5, wherein a plurality of the weakening lines are provided on both side edges.

  According to the first aspect of the present invention, a weakening line is provided on the outer surface on the surface side, and this weakening line is composed of a set of through holes penetrating the high-strength base film, The weakened line portion has a lower strength than the other portions, and is therefore easy to tear by hand without using a cutter. For this reason, it is not necessary to use a cutter, and the necessity of cutting twice does not arise.

  In addition, since the weakening line is composed of a set of fine through holes, unlike the case where the weakening line is formed of continuous line-shaped through holes, the load of a large-capacity content concentrates on the penetration line. Dispersed without hitting the holes. For this reason, the bag is not inadvertently broken even though a through-hole penetrating the high-strength base film is provided.

  For this reason, the packaging body of the present invention accommodates a large volume of the contents, and can be opened easily without inadvertently breaking the bag, and the cutter is less worn. It is easy to tear and open as designed, guided by the weakening line, and does not need to be cut twice.

FIG. 1 relates to an example of the package of the present invention. FIG. 1 (a) is a perspective view of the package, FIG. 1 (b) is a front view, and FIG. FIG. 2 is a front view for explaining the opening method of the package of the present invention. 3 is a front view of the package of Comparative Example 1. FIG. 4 is a front view of the package of Comparative Example 2. FIG. 5 is a front view of the package of Comparative Example 3. FIG. FIG. 6 is a front view of the package of Example 2 of the present invention. FIG. 7 is a front view of the package of Example 3 of the present invention. FIG. 8 is a front view of the package of Example 4 of the present invention. FIG. 9 is a front view of a package of Example 5 of the present invention. FIG. 10 relates to a conventional package, FIG. 10 (a) is a perspective view thereof, and FIGS. 10 (b) to 10 (c) are perspective views for explaining an opening method.

Hereinafter, specific examples of the present invention will be described with reference to the drawings. FIG. 1 relates to a specific example of the present invention, FIG. 1 (a) is a perspective view thereof, FIG. 1 (b) is a front view thereof, and FIG. 1 (c) is a sectional explanatory view around a through hole. FIG. 2 is a front view showing a method for opening the package.

  As can be seen from FIGS. 1 (a) and 1 (b), the packaging body 1 of the present invention rolls the packaging film and seals both ends thereof to form a back seal line 1a, and this back seal line 1a is on the back side. The top seal line 1b and the bottom seal line 1c are configured by sealing and sealing the upper and lower ends. For this reason, the back seal line 1a does not exist on the surface side. Needless to say, the contents are sealed inside.

  This packaging film contains a high-strength base film. Moreover, in order to form each seal line 1a, 1b, 1c, it is desirable to have a sealant layer on the inner surface. The packaging film may be a film having a two-layer structure in which a sealant layer is directly laminated on the base film. However, the packaging film has an intervening layer for bonding them between the base film and the sealant layer. May be. In this example, a packaging film having a three-layer structure is used as shown in FIG. An example of the high-strength base film is a stretched film having a thickness of 10 μm or more. For example, a biaxially stretched polyester film or a biaxially stretched polyamide film. The sealant layer may be a known one, for example, a low density polyethylene film, a linear low density polyethylene film, an unstretched polypropylene film, or the like. As the intervening layer, any layer can be used as long as it adheres to both. For example, a known anchor coating agent. Alternatively, the molten resin can be extruded between a base film and a sealant layer, and the base film and the sealant layer can be thermocompression-bonded to the molten resin and laminated. Of course, after applying the anchor coating agent to the base film, the base film and the sealant layer may be thermocompression bonded to the molten resin. Typical examples of the molten resin include polyethylene and acid-modified polyethylene.

  Next, a weakening line 11 is provided on the surface side without the back seal line 1a. The weakening line 11 is composed of a set of fine through holes penetrating the base film. The weakening line 11 may be constituted by, for example, a broken-line through hole. However, in order to guide the tear line at the time of opening, a plurality of fine C-shaped through holes are arranged. Is desirable. In this example, a number of fine C-shaped through holes are arranged. As shown in FIG.1 (c), the site | part with this through-hole does not have a high intensity | strength base film, but is comprised from two layers, an intervening layer and a sealant layer. For this reason, the intensity | strength of this site | part with a through-hole falls, and it can tear easily by hand.

  In addition, when the weakening line 11 is configured by a straight line penetrating the base film, a load due to a large volume of contents concentrates on the linear weakening line 11, so that there is a risk of inadvertent breakage. For this reason, the weakening line 11 needs to be composed of a collection of many fine through holes. As described above, when the weakening line 11 is configured by a collection of a large number of fine through holes, even if a large volume of content is accommodated, the load is distributed to the respective through holes, so carelessly. There is no bag breaking.

  By the way, as described above, in this example, the weakening line 11 is configured by arranging a large number of fine C-shaped through holes. Then, the lower sides of the two lines constituting the letter C are arranged so that the lower sides face the direction of the top seal line 1b, and the upper sides narrowed to each other face the bottom seal line 1c. For this reason, when the front side packaging film is torn by hand in the vertical direction from the top seal line 1b to the bottom seal line 1c, the tear line narrows from the lower side where the two lines constituting the letter C are open to each other. It is guided toward the upper side and guided to the lower side where the next letter C is opened. For this reason, the tear line is reliably guided to the weakening line 11 and does not deviate from the weakening line 11.

Further, these many fine through-holes may be close to each other so that the tear line does not come off from the weakening line 11 when torn by hand. For example, it is sufficient if the length between the C-shaped through holes adjacent to each other is 5 mm or less. Moreover, it is desirable that the width and height of the letter C are 10 mm or less. If it is larger than this, a through-hole may be inadvertently opened due to the load of the content, and the content may leak. On the other hand, when the film is torn by hand, the packaging film may be stretched through the through-hole, which may make it difficult to tear.

  Next, the weakening line 11 needs to extend from the top seal line toward the bottom seal line. The weakening line 11 does not need to have the same length as the length between the top seal line and the bottom seal line, that is, the length in the top-and-bottom direction of the package 1, but may be longer than 80%. desirable. If the weakening line 11 is short, the tear line is shortened accordingly, and it is difficult to take out the gelled contents.

  For the same reason, it is desirable that the weakening line 11 is provided along the side edges 1d and 1e, that is, close to the side edges 1d and 1e. When the weakening line 11 is provided in the vicinity of the center away from the side edges 1d and 1e, the tear line is also provided in the vicinity of the center accordingly, and it is difficult to take out the contents.

  In addition, it is desirable that a plurality of weakening lines 11 are provided on each of the side edges 1d and 1e. In the case where one weakening line 11 is provided on each of the side edges 1d and 1e, it is difficult to tear the packaging film if the tear line deviates from this. On the other hand, when a plurality of weakening lines 11 are provided, a tear line can be induced by another weakening line 11 even when the weakening line 11 is deviated. Desirably three or more. When three or more weakening lines 11 are provided, if the tearing is performed along the weakening line 11 located at the center of the three weakening lines 11, the cutting edge of the cutter is shifted to the left or right. However, the tear line can be induced by another weakening line 11. 1A and 1B are examples in which four weakening lines 11 are provided.

  Next, the package 1 can be opened by the method shown in FIG. That is, first, the packaging film on the surface side is cut parallel to the top seal line 1b to form a transverse cut line (see FIG. 2A). Cutting is possible with a cutter. Next, the packaging body 1 can be opened by grasping the vicinity of the transverse cutting line by hand and tearing along the weakening lines 11 on both sides (see FIG. 2B). In addition, before tearing by hand, you may cut by the both ends of a horizontal cutting line with a cutter, and you may tear by hand by using this notch as a trigger. And what is necessary is just to take out the content from the opening part enclosed by these horizontal cutting lines and tear lines. In addition, the contents such as flower paste, jam and straw are often hard and gelled in a plate shape according to the shape of the package 1, but even in this case, since the opening is wide, the plate shape It is possible to take out while maintaining the shape.

  Hereinafter, the present invention will be described with reference to examples and comparative examples. In Example 1 and Comparative Examples 1 to 3, the weakening line 11 is arranged on the surface side where the back seal line 1a is not provided, and the weakening line 11 is constituted by a set of minute C-shaped through holes. This is an example of confirming that it is possible to prevent inadvertent bag breaking and to facilitate opening.

  Examples 2 to 5 are examples for confirming the influence of the position of the weakening line 11, the number of lines, the size of the letter C, and the length of the weakening line 11.

Example 1
This example is an example of the package shown in FIGS.

  First, the packaging film was manufactured as follows. That is, a biaxially stretched polyamide film having a thickness of 15 μm was used as a base film, and an anchor coating agent was applied to one surface thereof to provide a weakened line 11. This weakening line 11 is composed of a set of C-shaped through-holes, and is arranged so that each set is located on both side edges of the package, with four rows as one set. Note that the width and height of the letter C are both 2 mm. Moreover, the weakening line 11 was arrange | positioned over the full length from the top seal line 1b to the bottom seal line 1d.

  Next, a linear low density polyethylene film having a thickness of 50 μm is used as the sealant layer, the molten polyethylene resin is extruded to a thickness of 20 μm, and the base film and the sealant layer are laminated on both sides of the molten polyethylene resin. The whole was crimped to produce a packaging film.

  Then, the packaging film is rolled up, and both ends are sealed with a palm to form a back seal line 1a. Next, the top seal line 1b and the bottom seal line 1c are arranged so that the back seal line 1a is located on the back side. The package 1 was formed. In addition, the contents are salmon.

  And the surface side without the back seal of this package 1 is cut | disconnected with a cutter along the top seal line 1b, and a horizontal cutting line is formed, and then a cutter is set at the intersection of this horizontal cutting line and the weakening line 11. A notch was made at, and the notch was used as a trigger for tearing by hand.

  This table shows the evaluation results of this transverse cutting line, tearability (openability), ease of taking out the contents (餡) after opening, and the presence or absence of bag breakage (impact resistance) when an impact is applied to the package. It is shown in 1. In each evaluation, the reason why Δ or X is given will be explained in the column of the discussion below.

(Comparative Example 1)
This example is an example of a package without the weakening line 11 as shown in FIG. In addition, as shown in FIG. 10, opening was performed using the cutter for both the horizontal cutting line and the vertical cutting line. Others are the same as in the first embodiment.

(Comparative Example 2)
In this example, as shown in FIG. 4, a weakened wire 11 is provided on the back side with the back seal line 1a, and the back side is opened. Others are the same as in the first embodiment.

(Comparative Example 3)
In this example, as shown in FIG. 5, a linear continuous line is provided as the weakening line 11. One weakening line 11 was provided along each side edge 1d, 1e. Others are the same as in the first embodiment.

(Discussion)
In Comparative Example 1 without the weakening line 11, since the packaging body uses a high-strength packaging film, a strong force is required to cut the packaging film, and the blade edge of the cutter is severely worn. The film could not be cut, and it was not easy to open. Further, in Comparative Example 2 in which the weakening line 11 is arranged on the back side where the back seal line 1a is located, tearing was easy, but the cutter was caught on the back seal line 1a when forming a transverse cutting line with the cutter, It was not easy to open. Moreover, in the comparative example 3 which provided the linear continuous line as the weakening line 11, when the impact was applied to the package 1, the weakening line 11 was torn and torn.

In contrast, the package of Example 1 was easy to open, and there was no bag breakage due to impact. From this result, the weakening line 11 is arranged on the surface side where the back seal line 1a is not present, and the weakening line 11 is constituted by a set of minute U-shaped through holes, so that an inadvertent bag breaking can be prevented. It can be concluded that it can be prevented and opened easily.

(Example 2)
In this example, as shown in FIG. 6, the position of the weakening line 11 is not located along the both side edges but is arranged in the approximate center, and the others are the same as in the first embodiment. As can be seen from Table 2 to be described later, opening is easy and there is no bag breakage due to impact, but the opening is narrow and it is difficult to take out the gelled contents. On the other hand, in Example 1 in which the weakening lines 11 are arranged along the side edges on both sides, it is easy to take out the contents. Therefore, it can be seen that it is desirable to provide the weakening lines 11 along the side edges on both sides.

(Example 3)
In this example, as shown in FIG. 7, one weakening line 11 is arranged on each side edge, and the others are the same as in the first embodiment. The tear line is easily detached from the weakening line 11, and therefore, it cannot be said that the opening is sufficiently easy. In Example 1 in which four weakening lines 11 are arranged on the side edges on both sides, even if the tear line deviates from the weakening line 11, it can be easily torn along the adjacent weakening line 11. It can be seen that it is desirable to provide a plurality of 11.

Example 4
In this example, as shown in FIG. 8, the letter C constituting the weakening line 11 is enlarged, and the width and height of the letter C are both 15 mm. Others are the same as in the first embodiment. The distance between the two lines constituting the letter C is wide, and therefore, it cannot be said that opening is sufficiently easy. In Example 1 in which the width and height of the letter C were each 2 mm, it was easily torn, and thus when the weakening line 11 is configured by arranging the letter-shaped through holes, It can be seen that it is desirable to reduce the size of the letter C.

(Example 5)
In this example, as shown in FIG. 9, the length of the weakening line 11 is set to 80% of the distance between the top seal line 1b and the bottom seal line 1c, and the others are the same as in the first embodiment. . The distance between the two lines constituting the letter C is wide, and therefore, it was not easy to open. Opening is easy and there is no bag breakage due to impact, but the opening is narrow and it is difficult to take out the gelled contents. On the other hand, in the first embodiment in which the weakening line 11 is arranged over the entire length from the top seal line 1b to the bottom seal line 1d, the contents can be easily taken out, so the length of the weakening line 11 is increased. It turns out that is desirable.

1: Package 1a: Back seal line 1b: Top seal line 1c: Bottom seal line 1d: Side edge 1e: Side edges 11-13: Weak line

Claims (6)

A packaging body comprising a packaging film formed by rolling a packaging film and sealing both ends thereof to form a back-seal line, arranging the back-seal line on the back side, and sealing the top and bottom ends to form a top seal line and a bottom seal line In the packaging body in which the packaging film includes a high-strength base film,
A surface without a back seal line is defined as a surface side, and a weakening line is provided on the surface side from the top seal line to the bottom seal line, and a set of fine through holes through which the weakening line penetrates the base film. A package characterized by being composed of   The package according to claim 1, wherein the through hole has a cross-sectional shape.   The base package according to claim 2, wherein both the width and height of the letter C are 10 mm or less.   The base package according to any one of claims 1 to 3, wherein a length of the weakening line is longer than 80% of a length between the top seal line and the bottom seal line.   The package according to any one of claims 1 to 4, wherein the weakening line is provided along side edges on both sides.   The package according to claim 5, wherein a plurality of the weakening lines are provided on each side edge.