JP6862595B1 - Packaging bag that can cut steps - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag capable of cutting a step, which can surely generate a step in an opened portion and can cope with shrinkage of a film. On the other hand, a central linear cut line 8 is formed along a cut line 4 in a film, and one upper straight cut line 9 is formed above and below the cut line on the end side of the central straight cut line. The lower linear cut line 10, the first inclined cut line 11 connecting them, and the second inclined cut line 12 connecting the ends of the first inclined cut line and the central linear cut line are formed, while the film has a second inclined cut line 12. Above and below the cut line, the other upper straight cut line 13, the other lower straight cut line 14, the upper zigzag cut line 15 connecting the inner ends of the other upper straight cut line, and the other inner side of the lower straight cut line. A continuous diamond-shaped cut line 17 located between the lower zigzag cut line 16 connecting the ends and the upper and lower zigzag cut lines is formed, and the position of the inner end of the first inclined cut line is the left and right heat-welded portions. It was configured to be located inside each of the inner edges of the. [Selection diagram] Fig. 1

Description

The present invention relates to a packaging bag capable of cutting a step in an easy-opening means located above the packaging bag, in which a cut line that causes a step is provided in the opened portion.

Conventionally, in this type of packaging bag, a pair of corrugated half-cut lines (guide wires) having the same phase are provided on one side of the packaging bag on the upper side and the lower side, and an upper wave is provided on the other side of the packaging bag. Two linear half-cut lines (guide lines) are provided between the mold half-cut line (guide line) and the lower wavy half-cut line (guide line), and the upper wavy half-cut line is provided. When the upper side is cut along the upper straight half-cut line, the upper wavy half-cut line remains on the upper straight half-cut line, and the lower wavy half-cut line When the upper side is cut along the lower straight half-cut line, the lower wavy half-cut line remains under the lower straight half-cut line, and both are packaged after the upper side is cut. It has been proposed that the opening of the bag can be easily opened (for example, Patent Document 1).

Japanese Patent No. 6142960

By the way, in the packaging bag of Patent Document 1, the cutting line may deviate from the corrugated half-cut line due to the amount of force applied on the one side, and once the deviation occurs, the direction of the cutting line is corrected. Therefore, there was a case where an appropriate step was not formed in the opened part.

Further, during bag making, the film (for example, nylon film) constituting the bag shrinks in the left-right direction (horizontal direction), so that the notch provided on the outer edge of the bag crosses the half-cut line or crosses the half-cut line due to the shrinkage. There is a problem that the notch and the half-cut line may come close to each other, and when such an event occurs, the cutting line from the notch may not be successfully guided to the half-cut line.

An object of the present invention is to provide a packaging bag capable of surely causing a step in the opened portion and capable of cutting the step in the left-right direction of the film.

In order to achieve the above object, the present invention
First, a heat-welded portion is formed by heat-welding one film and the other film to each other with a predetermined width around them, and cut lines are provided at the same level positions on the left and right ends of the upper portion. In a step-cuttable packaging bag having easy-opening means along the virtual extension line connecting both cut lines, one of the easy-opening means of the film is a central straight line along the virtual extension line of both cut lines. A cut line is formed, and on both ends of the central straight cut line, one upper straight cut line and one lower straight cut line parallel to each other above and below each of the left and right cut lines, and one of them The first inclined cut line connecting both inner ends of the upper and lower linear cut lines is formed symmetrically, and connects each inner end of the first inclined cut line with both ends of the central linear cut line. The two inclined cut lines are formed symmetrically, and the other easy-opening means for the film is such that the other upper linear cut line and the other lower straight cut line parallel to each other above and below each of the left and right cut lines are left and right. A cut line that is symmetrically provided and connects each inner end to the center of the left and right upper upper straight line, and is composed of a zigzag straight line and an upper zigzag line and a left and right other lower straight line. from each inner end of Jo cut line a score line connecting the central portion, and a lower zigzag score line formed on the upper zigzag score line and opposite phase, the upper Jiguza grayed-shaped score line and the lower zigzag It is a cut line located between the cut lines, and the positions of the upper and lower apex of the diamond match the positions of the upper and lower apex of each upper and lower apex of the upper and lower zigzag cut line, and the left and right apex of the diamond are the virtual extension. It is composed of a continuous diamond-shaped cut line located on the line, and the positions of both inner ends of the left and right first inclined cut lines are located inside both inner edges of the left and right heat-welded portions. It consists of a packaging bag that can cut steps.

One of the above films refers to, for example, a laminated film (1) on the front surface side. The other film is, for example, a laminated film (2) on the back surface side. The cut line is a so-called notch (4). With this configuration, the positions of both inner ends of the left and right first inclined cut lines are located inside both inner edges of the left and right heat-welded portions, so that a virtual extension line from the cut line (actually). Since the distance (T) becomes longer until the cut line) reaches the first inclined cut line, the cut line and the first inclined cut line even if the film shrinks in the left-right direction during bag making or the like. The line of sight is close to the line of sight, or the cut line does not cross the first inclined cut line, and even if the film shrinks in the left-right direction, it does not affect the openness of the step. Further, when the upper side portion is picked and the upper side portion is cut along the easy-opening means, a linear cutting line along the central linear cut line appears on one film, and for example, an upper zigzag cutting line appears on the other film. Since the cutting line along the line of sight appears on the straight cutting line, it is easy to visually recognize that a step has occurred, and it is possible to easily open the package by putting a finger on the zigzag-shaped cutting line.

Second, the two adjacent sides of each diamond of the continuous diamond-shaped cut line of the other film are parallel to the adjacent two sides of the upper zigzag-shaped cut line, and the continuous diamond shape. The two adjacent sides below each rhombus of the cut line are composed of the step-cuttable packaging bag according to the first aspect, which is close to and parallel to the two adjacent sides of the lower zigzag cut line.

The above proximity means that the distance between the two sides of the upper and lower zigzag cut lines and the upper and lower two sides of the continuous diamond-shaped cut line is, for example, about 1 mm. With this configuration, for example, in the other film, even if the cutting line deviates from the upper zigzag cut line while being cut along the upper zigzag cut line, a continuous diamond shape that is close and parallel. The cutting line is guided to the two sides above the cut line, after which it can be cut along the diamond shape of the continuous diamond-shaped cut line, and in the middle of being cut along the lower zigzag cut line. Even if the cutting line deviates from the lower zigzag cut line, the cutting line is guided to the two sides below the continuous diamond-shaped cut line that is close and parallel, and then becomes a diamond shape of the continuous diamond-shaped cut line. Since it can be cut along the line, it is possible to surely form a step in any case.

Third, the one film and the other upper linear cut line are provided at the same level on the front and back sides of the one film and the other film, and the one film and the other film are provided at the same level on the front and back. the Jo score line is provided on the front and back the same level position, what the score line is provided in an intermediate position in the vertical direction of the distance between the other hand upper straight off th line and the other hand the lower straight score line It is composed of the packaging bag capable of cutting the step according to the above 1 or 2 above.

With this configuration, the cutting line starting from the cut line reaches one or the other upper linear cut line, or one or the other lower linear cut line before reaching the first inclined cut line. Even so, since each of the above linear cut lines is formed at the same level position on one side and the other side, one film side is guided to the central straight line cut line via the first or second inclined cut line. The other film side can also be guided to the upper zigzag cut line, the lower zigzag cut line, or the continuous diamond-shaped cut line, respectively, and the opening can be opened in a stepped shape.

Fourth, the central linear cut line of the other film is located at the center position in the vertical direction of the upper zigzag cut line and the lower zigzag cut line of the other film. It is composed of the packaging bag capable of cutting the step according to any one of the first to third items.

With this configuration, one film is always cut along the central linear cut line and the other film is cut along the upper or lower zigzag cut line, thus ensuring a step in the opening. be able to. Moreover, since one film has a straight line and the other film has a zigzag shape, it is possible to visually determine that there is a step in the opening.

Fifth, each diamond of the continuous diamond-shaped cut line of the other film has the central linear cut line of the one film located along each horizontal diagonal line. It is composed of a packaging bag capable of cutting steps according to any one of the above.

With this configuration, each diamond of the continuous diamond-shaped cut line is located between the upper zigzag-shaped cut line and the lower zigzag-shaped cut line, so that each diamond shape is deviated from the upper or lower zigzag-shaped cut line. The cut line can be easily captured and guided along the upper or lower side of the continuous diamond-shaped cut line, even if cut along the continuous diamond-shaped cut line. Since the central straight cut line is located along the horizontal diagonal line, it is possible to visually clearly show that there is a step in the opening after cutting the upper side portion.

Sixth, the left and right vertices of each horizontal diagonal of each rhombus of the continuous diamond-shaped cut line are located at the closest positions above and below the upper zigzag-shaped cut line and the lower zigzag-shaped cut line, and the upper zigzag-shaped cut line is located. The upper and lower vertices of each vertical diagonal of each rhombus of the continuous diamond-shaped cut line are located at the most spaced positions above and below the shape cut line and the lower zigzag-shaped cut line. It is composed of a packaging bag capable of cutting steps according to any one of the above.

With this configuration, the upper zigzag cut line is located along the upper side of the continuous diamond-shaped cut line, and the lower zigzag cut line is located along the lower side of the continuous diamond-shaped cut line. Is located, and the cutting line deviated from the upper or lower zigzag cut line can be cut along the upper or lower side of the continuous diamond-shaped cut line, and in any case, in the opening. It is possible to form a clear step.

According to the present invention, since the positions of both inner ends of the left and right first inclined cut lines are located inside both inner edges of the left and right heat-welded portions, a virtual extension line from the cut line (actually). Since the cutting line) has a long distance until it reaches the first inclined cut line, even if the film shrinks in the left-right direction during bag making, the cut line and the cut line are close to each other or the cut line is close to each other. The cut line does not cross the cut line, and even if the film shrinks in the left-right direction, it does not affect the openability of the step.

Also, when the upper side is picked and the upper side is cut along the easy-opening means, a straight cutting line along the central linear cut line appears on one film, and the other film has, for example, an upper or lower zigzag. Since the cutting line along the cut line appears above or below the straight cutting line, it is easy to visually recognize that a step has occurred, and it is possible to easily open the package by putting a finger on the zigzag cutting line. It becomes.

Further, for example, in the other film, even if the cutting line deviates from the zigzag cut line while being cut along the upper zigzag cut line, it is above the continuous diamond-shaped cut line which is close and parallel. The cutting line is guided to two sides, and then it can be cut along the rhombus of the continuous diamond-shaped cut line, and while it is being cut along the lower zigzag-shaped cut line, the cutting line is described above. Even if it deviates from the lower zigzag cut line, the above cutting line is guided to the two sides below the continuous diamond-shaped cut line that is close and parallel, and then cut along the diamond shape of the continuous diamond-shaped cut line. In any case, it is possible to surely form a step.

Further, even if the cutting line started from the cutting line reaches one or the other upper linear cutting line or one or the other lower linear cutting line before reaching the first inclined cutting line, the above Since each linear cut line is formed at the same level position on one side and the other side, one film side can be guided to the central linear cut line via the first or second inclined cut line, and the other. The film side of the film can also be guided to the upper zigzag cut line, the lower zigzag cut line, or the continuous diamond-shaped cut line, respectively, and the opening can be opened in a stepped shape.

Further, since one film is always cut along the central linear cut line and the other film is cut along the upper or lower zigzag cut line, a step can be surely generated in the opening. Moreover, since one film has a straight line and the other film has a zigzag shape, it is possible to visually determine that there is a step in the opening.

Further, since the continuous diamond-shaped cut line is located between the upper zigzag-shaped cut line and the lower zigzag-shaped cut line, the continuous diamond-shaped cut line can be easily captured by catching the cut line deviated from the upper or lower zigzag-shaped cut line. A cutting line can be guided along the upper or lower side of the shape cut line, and even if the cut line is cut along the continuous diamond-shaped cut line, the central linear cut line is located on the horizontal diagonal line. Therefore, after cutting the upper side portion, it can be visually clearly shown that there is a step in the opening portion.

Further, since the upper side of the continuous diamond-shaped cut line and the upper zigzag-shaped cut line are parallel to each other, and the lower side of the continuous diamond-shaped cut line is parallel to the lower zigzag-shaped cut line, the upper or lower zigzag-shaped cut line is parallel. The cutting line deviated from the cutting line can be cut along the upper side or the lower side of the continuous diamond-shaped cutting line, and in any case, a clear step can be formed in the opening.

It is a front view of the packaging bag which can cut a step according to this invention. It is a rear view of the same packaging bag. It is an enlarged front view of the vicinity of the easy-opening means of the packaging bag as above. It is an enlarged rear view of the vicinity of the easy-opening means of the packaging bag as above. It is an enlarged front view of the vicinity of the easy-opening means on the back side of the packaging bag of the same as above. It is a front view of the same packaging bag which shows the state after opening of the same packaging bag. It is a front view of the same packaging bag which shows the state after opening of the same packaging bag. It is an enlarged front view of the vicinity of the easy-opening means of another embodiment of the same packaging bag.

Hereinafter, the packaging bag capable of cutting steps according to the present invention will be described in detail.

The laminated film on the front side (one film) 1 (see FIG. 1) and the laminated film on the back side (the other film) 2 (see FIG. 2) are opposed to each other and heat-welded to a predetermined width around them. The portions 3 are formed, and notches (cut lines penetrating the laminated film 1 on the front surface side and the laminated film 2 on the back surface side) 4 and 4 are provided at the same level positions on the left and right ends of the upper portion. It constitutes a step-cuttable packaging bag 7 having an easy-opening means 5 on the front surface side and an easy-opening means 6 on the back surface side along a virtual extension line L1 connecting the two and four. The film is a concept including a laminated film.

In FIG. 1, the left and right sides toward the paper surface are referred to as "left-right direction", and the top and bottom directions toward the paper surface are referred to as "vertical direction". Therefore, the heat welding portion 3 is a heat welding portion 3a on the left side, a heat welding portion 3b on the right side, a heat welding portion 3c on the upper side, and a heat welding part 3d on the lower side. FIG. 2 (the same applies to FIGS. 4 and 5) shows a state in which the laminated film is turned upside down with respect to FIG. 1, and therefore, only the left and right sides are reversed from FIG.

Further, in FIGS. 1 and 2, the direction outside the heat-welded portion 3 is referred to as "outside", and the direction inside the heat-welded portion 3 (the central portion side of the bag) is referred to as "inside". Further, the laminated film 1 on the front surface is also referred to as "front surface side", and the laminated film 2 on the back surface is also referred to as "back surface side".

Further, the "cut line" described below is a known technique in which a half-cut line having a predetermined depth is provided only on the surface films of the laminated films 1 and 2 by a laser, and the laminated film does not penetrate the laminated film. An induction wire for guiding the cutting wire at the time of opening.

Further, in FIGS. 1 and 2, reference numeral 21 is a known resealing means provided under the easy-opening means 5 and 6, and the resin ridges and the ridges are fitted inside the bag. The opening can be closed again by providing a possible recess in the left-right direction, cutting off the upper side portion 1', and then fitting the protrusion into the recess. The resealing means 21 may or may not be provided.

As shown in FIGS. 1 and 3, the easy-opening means 5 of the laminated film 1 on the front surface side is formed with one central linear cut line 8 along the virtual extension line L1 connecting the two notches 4 and 4. In the vicinity (both ends) of both ends (both ends) 8a and 8a of the central linear cut line 8, one of the upper and lower linear cuts parallel to each other above and below each of the left and right notches 4 and 4 The line of sight 9 and 9 and the lower linear cut lines 10 and 10 are provided symmetrically, and the inner ends 9a and 10a of the upper linear cut line 9 and 9 and the lower linear cut line 10 and 10 are provided symmetrically. The first inclined cut lines 11 and 11 connecting the two are provided symmetrically (see FIG. 3).

In the following description, since the structure of the cut lines around the notches 4 and 4 is symmetrical on both the front and back sides (see FIG. 1), only the left side is described in FIGS. Is shown in parentheses.

The left and right notches 4 (4) are provided at the center positions of the left and right upper linear cut lines 9 (9) and the one lower linear cut line 10 (10) in the vertical direction. On the other hand, the inner end 9a (9a) of the upper linear cut line 9 (9) penetrates considerably inward from the inner edges 3a'(3b') of the left and right heat-welded portions 3a (3b). The inner end 10a (10a) of the lower linear cut line 10 (10) is located in the outer direction (inside the heat-welded portion 3a (3b)) of the inner edge 3a'(3b'). That is, on the one hand, the upper linear cut line 9 (9) is formed long, while the lower linear cut line 10 (10) is formed short.

Therefore, the first inclined cut line 11 (11) is (bag) from the outer end 11b (11b) (the same point as the inner end 10a) to the inner end 11a (11a) (the same point as the inner end 9a). It is provided on an uphill slope (from the outside to the inside).

Further, a second connecting both inner ends 11a (11a) of the first inclined cut line 11 (11) (at the same point as the inner end 9a) and both end portions 8a (8a) of the linear cut line 8. The inclined cut line 12 (12) is formed symmetrically. The second inclined cut line 12 (12) is formed on both ends 8a (8a) of the central linear cut line 8 along the virtual extension line L1 connecting the notch 4 (4), and the upper surface upper linear cut line is formed on the upper side. Since it is directed from the inner end 9a (9a) of 9 (9) (the same point as the inner end 11a), it is provided so as to incline downward from the outside to the inside.

The easy-to-open means 6 (see FIGS. 2 and 4) of the laminated film (the other film) 2 on the back surface side has a linear cut line 13 (see FIG. 2 and 4) parallel to each other above and below each of the left and right notches 4 (4). 13) and the other lower linear cut line 14 (14) are provided symmetrically, and the cut line connecting the center portion from each inner end 13a (13a) of the left and right other upper straight cut lines 13 (13). It is a cut line connecting the upper zigzag cut line 15 composed of a zigzag straight line and the inner end 14a (14a) of the left and right other lower straight line 14 (14) to the central part. , A lower zigzag cut line 16 configured in a phase opposite to that of the upper zigzag cut line 15 is provided.

Here, in the upper zigzag cut line 15 according to the present invention, the horizontal level position of the apex 15b below it is the same level position of the inner end 13a (13a), and the position of the upper apex 15a is It is a zigzag-shaped cut line as if it is provided above the level position of the inner end 13a (13a). In short, the upper zigzag cut line 15 constitutes a waveform like a triangular pulse wave having a fixed period with the level of the inner end 13a (13a) as 0 level (see FIG. 2).

Further, in the lower zigzag cut line 16, the horizontal level position of the apex 16b above it is the same level position as the inner end 14a (14a), and the position of the lower apex 16a is the inner end 14a ( It is a zigzag-shaped cut line as if it is provided below the level position of 14a). In short, the upper zigzag cut line 16 forms a waveform such as a triangular pulse wave having a fixed period in which the level of the inner end 14a (14a) is set to 0 level and having a phase opposite to that of the upper zigzag cut line 15. doing.

In the following description, "the positions in the left-right direction match" means that, for example, the apex 15a above the upper zigzag cut line 15 and the apex 16a below the lower zigzag cut line 16 are spaced apart in the vertical direction. It is used when the positions in the left-right direction are the same, and there is a gap in the up-down direction, but the positions in the left-right direction are the same.

In FIG. 2, the upper zigzag cut line 15 is composed of five peaks, and the lower zigzag cut line 16 is composed of five valleys having a phase opposite to that of the peaks. In the present embodiment, the upper and lower zigzag cut lines 15 and 16 are each composed of five peaks and valleys, but the peaks and valleys are not limited to five, and the upper zigzag cut line 15 side is It can also be composed of 2 to 10 peaks and 2 to 10 valleys on the lower zigzag cut line 16 side having a phase opposite to that of the peak. Also, it is preferable to match the number of peaks and valleys. If there are two peaks, there are two valleys with opposite phase, and if there are seven peaks, there are seven valleys with opposite phase. preferable.

That is, as shown in FIG. 2, the lower zigzag cut line 16 has a phase opposite to that of the zigzag cut line 15, that is, the upper apex 15a of the upper zigzag cut line 15 and the lower zigzag cut line 16 The lower vertices 16a of the above coincide with each other in the horizontal direction (the vertices 15a and the vertices 16a form the widest vertical interval), and the lower vertices 15b of the upper zigzag cut line 15 and the lower zigzag cut The upper vertices 16b of the line of sight 16 are configured to coincide with each other at positions in the left-right direction (the vertices 15b and the vertices 16b form the narrowest vertical interval).

As a result, the upper zigzag cut line 15 and the lower zigzag cut line 16 are not in contact with each other in the vertical direction and have a predetermined vertical interval, but as a whole, one peak and valley. It is configured in a substantially diamond shape that is continuous in the left-right direction.

Further, between the upper zigzag cut line 15 and the lower zigzag cut line 16, the upper zigzag cut line 15 and the diamond 17'are located in parallel with the lower zigzag cut line 16 to the left and right. A continuous diamond-shaped cut line 17 is formed on the continuous side (see FIGS. 2, 4, and 5).

Focusing on one diamond 17'of this continuous diamond cut line 17 (see FIG. 5), one diamond 17'is close to the two sides (sides) 15c and 15d on the upper zigzag cut line 15. The upper two sides (sides) 17a and 17b that are parallel to each other and the lower two sides (sides) 17c and 17d that are close to and parallel to the lower two sides (sides) 16c and 16d of the lower zigzag cut line 16. The upper and lower vertices 17e and 17f of the diamond shape 17'match the positions of the vertices 15a (upper vertices) and 16a (lower vertices) of the upper and lower zigzag cut lines 15 and 16 in the left-right direction. At the same time, the positions of the left and right vertices 17g and 17g of the diamond 17'are aligned with the positions of the vertices 15b (lower vertices) and 16b (upper vertices) of the upper and lower zigzag cut lines 15 and 16. It is configured to be.

The left and right vertices 17g and 17g of each continuous rhombus 17'of the continuous rhombus cut line 17 are configured to be located along the central linear cut line 8 (virtual extension line L1) on the front surface side (the virtual extension line L1). (See FIG. 5).

Therefore, the distance between the two sides 15c and 15d on the upper zigzag cut line 15 and the two sides 17a and 17b on the diamond 17'is always constant and parallel, and is formed to be, for example, about 1 mm. Further, the distance between the two sides 16c and 16d below the upper zigzag cut line 16 and the two sides 17c and 17d below the diamond 17'is always constant and parallel, and is formed to be, for example, about 1 mm.

Therefore, the upper zigzag cut line 15 (upper side 15c, 15d) or the lower zigzag cut line 16 (lower side 16c, 16d) and the upper side 17a, 17b and the lower side 17c, 17d of the continuous diamond-shaped cut line 17 are always present. , With a certain interval (for example, 1 mm), they are formed parallel to each other in the left-right direction.

In this way, in the substantially diamond-shaped space formed by one mountain (triangular mountain) of the upper zigzag cut line 15 and the valley (triangular valley) of the lower zigzag cut line 16. A diamond 17'having a substantially similar shape is continuously located in the substantially diamond shape of the space formed in the substantially diamond shape (see FIGS. 2 and 5).

Further, as shown in FIGS. 3 and 4, the positions of the two inner ends 11a (11a) (the same points as the inner ends 9a) of the left and right first inclined cut lines 11 (11) are the heats of the left and right. It is configured to be located inside both inner edges 3a'(3b') of the welded portion 3a (3b). Further, the outer end 11b (11b) (same point as the inner end 10a) of the first inclined cut line 11 (11) is slightly outside the inner edge 3a'(3b') of the heat-welded portion 3a (3b). That is, it is provided inside the heat-welded portion 3a (3b).

This is the distance T (see FIGS. 3 and 4) from the outer edge 3a "(3b") of the heat-welded portion 3a (3b) to the position where the virtual extension line L1 intersects the first inclined cut line 11. By setting the length longer (for example, T = 8 mm to 10 mm), when the film such as nylon shrinks in the left-right direction, the notch 4 is applied to the first inclined cut line 11 (the film shrinks in the left-right direction and the notch 4 Even if the film shrinks by preventing the inner end from reaching the position of the first inclined cut line 11), the notch 4 reaches the first inclined cut line 11 with a sufficient distance T. This is to prevent this.

Further, as shown in FIGS. 3 and 4, the one upper linear cut line 9 of the laminated film 1 on the front surface side and the other upper linear cut line 13 of the laminated film 2 on the back surface side are provided at the same level on the front and back sides. The one lower linear cut line 10 of the laminated film 1 on the front surface side and the other lower linear cut line 14 of the laminated film 2 on the back surface side are provided at the same level on the front and back sides.

This is because one or the other upper linear cut line 9, 13 or one or the other lower straight line before the cutting line starting from the notch 4 (4) reaches the first inclined cut line 11 (11). Even if the shape cut lines 10 and 14 are reached, the linear cut lines 9, 10, 13 and 14 are formed at the same level on one side and the other side, so that the laminated film 1 side on the front surface side is formed. On the other hand, the upper linear cut line 9 or the lower straight cut line 10 can be guided to the central linear cut line 8 via the first or second inclined cut lines 11 and 12, and the laminated film 2 side on the back side can also be guided. , The upper and lower linear cut lines 13 and 14 can be guided to the upper zigzag cut line 15, the lower zigzag cut line 16 or the continuous diamond-shaped cut line 17, respectively, and finally, a step is formed in the opening. This is because it can be provided.

Further, as shown in FIG. 4, each inner end 13a (13a) of the other upper linear cut line 13 (13) of the laminated film 2 on the back surface side has the second inclination of the laminated film 1 on the front surface side. The inner end (end) 8a (8a) of the cut line 12 (12) is connected to both ends 13a (13a) of the upper zigzag cut line 15 at positions in the left-right direction, and is laminated on the back surface side. Each inner end 14a (14a) of the other lower linear cut line 14 (14) of the film 2 is an inner end 8a (8a) of the second inclined cut line 12 (12) of the laminated film 1 on the front surface side. They are connected to both ends 14a (14a) of the lower zigzag cut line 16 at positions in the left-right direction. Further, the positions of the vertices 17g (17g) at both ends of the continuous diamond cut line 17 in the left-right direction are also configured to coincide with the both ends 13a (13a) and 14a (14a).

That is, the positions of the inner end 13a (13a) of the other upper linear cut line 13 (13) and the inner end 14a (14a) of the other lower straight cut line 14 (14) are both the second inclined cut line. It is provided at a position corresponding to the inner end 8a (8a) of the 12 (12) in the left-right direction.

This is because the cut line on the front surface side is guided from the second inclined cut line 12 to the central linear cut line 8, and the back side is, for example, from the inner end 13a of the upper linear cut line 13 to the upper zigzag cut line 15. Although it is guided, the cutting line on the back surface side is hung (guided) from the position near the inner end 13a of the other upper linear cut line 13 to the cutting line on the front surface side due to the degree of force applied or the like. 2 It may be cut in the direction of the inner end of the inclined cut line 12, that is, the inner end (end) 8a. In this case, although it is the laminated film 2 on the back surface side, a cutting line cut at a position near the inner end 8a on the front surface side is guided from the apex 17g to either the upper side or the lower side of the continuous diamond-shaped cut line 17. This is to make it easier.

Then, the central linear cut line 8 of the laminated film 1 on the front surface side is formed at the center position in the vertical direction of the upper zigzag cut line 15 and the lower zigzag cut line 16 of the laminated film 2 on the back surface side. Has been done.

This is because the laminated film 1 on the front side is always cut along the central linear cut line 8, and the laminated film 2 on the back side is the upper or lower zigzag cut line 15 or 16, or the continuous diamond-shaped cut line 17. This is because the cut is made along the upper side or the lower side, so that a step can be surely generated in the opening. Moreover, even if the cutting line is cut along the upper or lower zigzag cut line 15 or 16 or the upper side or the lower side of the continuous diamond-shaped cut line 17, one film becomes a straight line and the other film becomes a zigzag shape. Therefore, it is possible to visually determine that there is a step in the opening.

Further, as shown in FIG. 5, each diamond 17'of the continuous diamond-shaped cut line 17 of the laminated film 2 on the back surface side is linearly cut in the center of the laminated film 1 on the front surface side along each horizontal diagonal line. The line of sight 8 is located.

This is because the continuous diamond-shaped cut line 17 is located between the upper zigzag-shaped cut line 15 and the lower zigzag-shaped cut line 16, so that the cutting line deviated from the upper or lower zigzag-shaped cut lines 15 and 16 can be easily made. Can guide the cutting line along the upper sides 17a, 17b or the lower sides 17e, 17d of the continuous diamond-shaped cut line 17, and temporarily cut along the continuous diamond-shaped cut line 17. Even so, since the central linear cut line 8 is located on the horizontal diagonal line, it is possible to visually clearly show that there is a step in the opening after cutting the upper side portion.

Then, at the upper and lower closest positions (between the vertices 15b and 16b) of the upper zigzag cut line 15 and the lower zigzag cut line 16, each horizontal diagonal line of each diamond 17'of the continuous diamond-shaped cut line 17 is formed. The left and right vertices 17g and 17g of the above are located, and the continuous diamond shape is located at the most spaced positions (between the vertices 15a and 16a) above and below the upper zigzag cut line 15 and the lower zigzag cut line 16. It is configured so that the upper and lower vertices 17e and 17f of each vertical diagonal of each diamond 17'of the shape cut line 17 are located.

With this configuration, the upper sides 17a and 17b of the continuous diamond-shaped cut line 17 and the two sides (sides) 15c and 15d of the upper zigzag-shaped cut line 15 are parallel to each other, and below the continuous diamond-shaped cut line 17. Since the sides 17c and 17d and the two sides (sides) 16c and 16d of the lower zigzag cut line 16 are parallel to each other, the cut line deviated from the upper or lower zigzag cut line 15 or 16 is the continuous diamond-shaped cut line 17 Since it is possible to cut along the upper sides 17a and 17b or the lower sides 17c and 17d of the rhombus, it is possible to form a clear step in the opening in any case.

Since the present invention is configured as described above, its operation will be described below.

At the time of bag making, notches 4, 4 are usually cut in the laminated film, and cut lines 8, 15, 16 and the like are made by a laser, and then the laminated films are front-to-back and heat is generated on three sides. After welding and filling the contents, the last side is heat welded. In the process of bag making and filling, the laminated film may shrink in the left-right direction.

Even if shrinkage occurs in the left-right direction, the packaging bag 7 according to the present invention has a sufficient distance T from the notch 4 (4) to the first inclined cut line 11 (11) along the virtual extension line L1. Therefore, even if the laminated film shrinks in the left-right direction, the inner end of the notch 4 (4) becomes the first inclined cut line 11 even if the distance T is slightly reduced. It does not reach, and therefore the cutting line (cut along the virtual extension line L1) can be appropriately reached at the first inclined cut line 11.

Next, a case will be described in which the right side of the upper side portion 1'from the easy-opening means 5 and 6 in FIGS. 1 and 2 is picked and pushed to the back side for cutting.

When the upper side portion 1'is picked from the notch 4 on the right side of FIG. 1 and cut to the back side, the cutting line from the notch 4 is cut along the virtual extension line L1 in the heat welding portion 3a, and the inner edge 3a' After that, the cutting line is cut upward along the first inclined cut line 11 due to the force applied to the back side, and the surface is cut. The side reaches the inner end 11a (inner end 9a) and is guided from the inner end 11a (9a) to the second inclined cutting line 12, and then cut from the end 8a along the central linear cut line 8. ..

After that, the cutting line shifts to the right side, is cut from the end portion 8a along the second inclined cut line 12, is cut along the first inclined cut line 11 via the inner end 11a (9a), and subsequently is inside. Through the end 10a (outer end 11b), on the other hand, a cutting line 18 cut along the lower linear cut line 10 and the like is formed, and a cutting line 18 cut along the central linear cut line 8 is formed on the surface side (FIG. 6).

On the back surface side (see FIG. 4), when the cutting line from the notch 4 reaches the inner end 11a (9a) of the first inclined cut line 11, it shifts to the other upper linear cut line 13 on the back surface side. It is cut along the upper zigzag cut line 15 via the end portion 13a. Therefore, the laminated film 2 on the back surface side is then cut to the left along the upper zigzag cut line 15, and the upper two sides (sides) 15c and 15d and the respective vertices 15a (upper apex) and 15b (lower). It is cut to the right while passing through the apex), and on the right side, it is cut along the upper linear cut line 13 through the end 13a, and the back side is cut along the upper zigzag cut line 15. The cutting line 19 is formed (see FIG. 6).

At this time, since the zigzag-shaped cutting line 19 protrudes above the cutting line 18 on the back side of the linear cutting line 18 on the front surface side, the opening person can easily perform the zigzag-shaped cutting line. It is possible to open the laminated films 1 and 2 on the front and back by putting a finger on 19.

At this time, since the zigzag-shaped cutting line 19 protrudes behind the straight cutting line 18, it is easy for the operator to visually put his finger on the zigzag-shaped cutting line 19 to open the package. It has the advantage of being understandable.

Further, on the back surface side, the upper two sides (sides) 17a and 17b of the continuous diamond-shaped cut line 17 are provided close to each other and parallel to each other immediately below the upper zigzag cut line 15, so that they are provided in parallel from the direction of the force. Even if the cutting line deviates downward from the upper zigzag cut line 15, the deviated cutting line can immediately shift to the upper side (side) 17a or the upper side (side) 17b of the continuous diamond-shaped cutting line 17, so that the same applies. In addition, a zigzag-shaped cutting line 19'can be formed (see FIG. 6).

Therefore, similarly, the zigzag-shaped cutting line 19'protrudes behind the straight cutting line 18, so that the operator visually puts his finger on the zigzag-shaped cutting line 19'. It has the advantage that it is easy to understand that it can be opened.

In particular, at the apex 15a or 15b, the direction of the cut line of the upper zigzag cut line 15 changes, so that the cut line tends to shift, but even in that case, the continuous diamond cut line 17 is arranged in parallel and close to each other. Therefore, the cutting line can be easily transferred to the continuous diamond cut line 17 (upper sides 17a, 17b) having low resistance.

Next, a case where the upper side portion 1'is picked from the notch 4 on the right side of FIG. 1 and cut toward the front side will be described (see FIG. 3). In this case, the cutting line from the notch 4 is cut in the heat-welded portion 3a along the virtual extension line L1, passes the inner edge 3a', and reaches the intermediate portion of the first inclined cut line 11. The cutting line is guided to the first inclined cutting line 11 and is cut upward along the cutting line 11, the surface side reaches the inner end 11a (9a), and the second inclined cutting line 12 is formed from the inner end 11a. Is then cut along the central linear cut line 8 from the end 8a. This point is similar to the above example.

Therefore, after that, the cutting line shifts to the right side, is cut from the end portion 8a along the second inclined cut line 12, is cut along the first inclined cut line 11 via the inner end 11a (9a), and subsequently. On the other hand, it is cut along the lower linear cut line 10 and the like, and a cutting line 18 cut along the central linear cut line 8 is similarly formed on the surface side (see FIG. 7). Alternatively, it is cut along the upper linear cut line 9 without shifting from the inner end 11a to the first inclined cut line 11.

On the back surface side (see FIG. 4), when the cutting line from the notch 4 reaches the inner end 11a (9a) of the first inclined cut line 11, it shifts to the other upper linear cut line 13 on the back surface side. It is cut along the upper zigzag cut line 15 via the end portion 13a. In this case, as shown in FIG. 6, the cutting line 19 is formed by cutting along the upper zigzag-shaped cutting line 15. In this case, it is exactly the same as the above case.

Here, after shifting to the other upper linear cut line 13 (near the end 13a), the cutting line shifts from the other upper straight cut line 13 to the lower zigzag cut line 16 because the cutting line is cut to the front side. This case will be explained.

In this case, the laminated film 2 on the back surface side is then cut to the right along the lower zigzag cut line 16, and the lower sides (sides) 16c and 16d and the respective vertices 16a (lower vertices) and 16b (upper vertices) are cut. ), And on the right side, it is cut along the lower linear cut line 14 via the end 14a, and the back side is zigzag cut along the lower zigzag cut line 16. A cutting line 20 is formed (see FIG. 7).

At this time, since the zigzag-shaped cutting line 20 is formed on the back side of the linear cutting line 18 on the front surface side at a position below the cutting line 18, the opening person can easily cut the upper side. It is possible to open the laminated films 1 and 2 on the front and back sides by putting a finger on the wire 18.

At this time, since the zigzag-shaped cutting line 20 is formed behind the linear cutting line 18, the operator can visually check the cutting line 18 on the front surface side and the zigzag-shaped cutting line 20 on the back surface side. It has the advantage that it is easy to understand that it can be opened with a finger in between.

Further, on the back surface side, the two sides (sides) 17c and 17d below the continuous diamond-shaped cut line 17 are provided in parallel in close proximity to immediately above the lower zigzag cut line 16, so that the direction of the force is Therefore, even if the cutting line deviates upward from the lower zigzag cut line 16, the deviated cutting line can immediately shift to the lower side (side) 17c or the lower side (side) 17d of the continuous diamond-shaped cutting line 17. Similarly, a zigzag cutting line 20'can be formed (see FIG. 7).

Therefore, similarly, the zigzag-shaped cutting line 20'is formed behind the linear cutting line 18, so that the operator can visually visually see the linear cutting line 18 and the zigzag-shaped cutting line 18. There is an advantage that it is easy to understand that the package can be opened by putting a finger between the lines 20'.

In particular, at the apex 16a or 16b, the direction of the cut line of the lower zigzag cut line 16 changes, so that the cut line tends to shift, but even in that case, the continuous diamond cut line 17 is arranged in parallel and close to each other. Therefore, the cutting line can be easily transferred to the continuous diamond cut line 17 (lower sides 17c, 17d) having low resistance.

Further, in the process of shifting to the second inclined cut line 12 after the cutting line on the front surface side is located at the inner end 11a (9a), the cutting line on the back surface side becomes a continuous rhombus depending on the degree of force applied. It shifts to the apex 17g (see FIG. 4) as the end of the shape cut line 17, and when it is pushed to the back front side from that position, it is cut along the upper sides 17a and 17b of the continuous diamond cut line 17. In some cases. Further, when the apex 17g (see FIG. 4) is pulled toward the front side, it may be cut along the lower sides 17c and 17d of the continuous rhombus cut line 17.

Even in these cases, when pushed to the back side, a cutting line 18 is formed along the central linear cut line 8 on the front side, and two sides on the continuous diamond cut line 17 are formed on the back side thereof. A cutting line 19'is formed along (see FIG. 6), and when drawn toward the front, a cutting line 18 is formed along the central linear cut line 8 on the front surface side, and a continuous rhombus cutting is formed on the back surface side thereof. Since the cutting line 20'along the two sides below the line of sight 17 is formed (see FIG. 7), in any case, the step is surely formed and the step is operated in a visually easy-to-understand state. It has the advantage of being able to tell people.

Then, in the laminated film 1 on the back surface side, the positions in the left-right direction of the vertices 17g (17g) at both ends of the continuous diamond-shaped cut line 17 are the inner ends 13a of both ends of the upper zigzag cut line 15 and the lower zigzag cut line. Since it coincides with the inner ends 14a (14a) of both ends of 16, the cutting line reaching the inner end 13a or the inner end 14a reaches the apex 17g as both ends of the continuous diamond-shaped cut line 17. It also has the advantage of being easy to migrate.

What is shown in FIG. 8 is another embodiment of FIG. 3, in which the configurations of both ends of the laminated film 1 on the front surface side are different. In short, the lengths of the upper linear cut line 9 and the lower linear cut line 10 are reversed, so that the first inclined cut line 11 is configured to be downwardly inclined from the outside to the inside, and the second inclined cut line is formed. Reference numeral 12 denotes an upward slope from the outside to the inside. Other configurations (the configuration of the laminated film 2 on the back surface side) are the same as those of the embodiment shown in FIG. Even with such a configuration, the same effect as that of the embodiment of FIG. 3 can be obtained.

As described above, according to the present invention, the positions of both inner ends 9a (9a) of the left and right first inclined cut lines 11 (11) are located at both inner edges 3a'of the left and right heat-welded portions 3a (3b). Since each is located inside (3b') and the virtual extension line L1 (actually the cutting line) from the cut line has a long distance T until it reaches the first inclined cut line 11, it is assumed that the distance T is long. Even if the film shrinks in the left-right direction during bag making, the cut line and the cut line do not come close to each other, or the cut line does not cross the cut line, and even if the film shrinks in the left-right direction, there is a step. It has no effect on the openness of the attachment.

Further, when the upper side portion 1'is picked and the upper side portion 1'is cut along the easy-opening means 5 and 6, one film (laminated film 1 on the front surface side) has a linear shape along the central linear cut line 8. The cutting line 18 of the above appears, and for example, the cutting line 19 along the upper zigzag cut line 15 appears on the linear cutting line 18 on the other film (laminated film 2 on the back surface side), so that a step is generated. It is easy to visually recognize this, and it is possible to easily open the package by putting a finger on the zigzag-shaped cutting line.

Further, for example, in the other film (laminated film 2 on the back surface side), even if the cutting line deviates from the upper zigzag cut line 15 while being cut along the upper zigzag cut line 15, they are close to each other. The cutting line is guided to the two sides (sides) 17a and 17b on the continuous diamond-shaped cut line 17 which are parallel to each other, and then can be cut along the diamond shape 17'of the continuous diamond-shaped cut line 17. However, even if the cutting line deviates from the lower zigzag cut line 16 while being cut along the lower zigzag cut line 16, the two below the continuous diamond-shaped cut line 17 that are close and parallel to each other. The cutting line is guided to the sides 17c and 17d, and then can be cut along the rhombus 17'of the continuous rhombus cut line 17, so that a step is surely formed in any case. Is possible.

That is, the deviation of the cutting line can be corrected by running the upper side or the lower side of the continuous diamond-shaped cutting line 17 in parallel with the upper or lower zigzag cut lines 15 and 16 and making two cut lines at the top and bottom. ..

Further, by providing zigzag bending points (15a, 15b, 16a, 16b) and diamond-shaped bending points (17e, 17f, 17g) on the back surface side, the cutting line is guided in an advantageous direction with less resistance. be able to.

Further, before the cutting line started from the cutting line 4 reaches the first inclined cutting line 11, one or the other upper linear cutting line 9, 13 or one or the other lower linear cutting line 10, Even if it reaches 14, each of the linear cut lines is formed at the same level position on one side and the other side, so that one film side (the laminated film 1 side of the surface) is the first or second inclined cut line. It can be guided to the central linear cut line 8 via the line of sight 11 and 12, and the other film side (the back surface laminated film 2 side) is also the upper zigzag cut line 15 or the lower zigzag cut line 16 or a continuous diamond shape. Each of them can be guided to the cut line 17, and the opening can be opened in a stepped shape.

Further, one film (laminated film 1 on the front surface side) is always cut along the central linear cut line 8, and the other film (laminated film 2 on the back surface side) is formed on the upper or lower zigzag cut lines 15 and 16. Since it is cut along the opening, a step can be surely generated in the opening. Moreover, as for the cutting line, one film (laminated film 1 on the front surface side) has a straight line, and the other film (laminated film 2 on the back surface side) has a zigzag shape. It can be easily identified.

Further, since the continuous diamond-shaped cut line 17 is located between the upper zigzag-shaped cut line 15 and the lower zigzag-shaped cut line 16, it is easy to cut a cutting line deviated from the upper or lower zigzag-shaped cut lines 15 and 16. It can be captured and guided along the upper or lower side of the continuous diamond-shaped cut line 17, and even if it is cut along the continuous diamond-shaped cut line 17, its horizontal diagonal line. Since the central linear cut line 8 is located at, it is possible to visually clearly show that there is a step in the opening after cutting the upper side portion 1'.

Further, the upper side of the continuous diamond-shaped cut line 17 and the upper zigzag-shaped cut line 15 are parallel to each other, and the lower side of the continuous diamond-shaped cut line 17 and the lower zigzag-shaped cut line 16 are parallel to each other. Alternatively, the cutting line deviated from the lower zigzag cut lines 15 and 16 can be cut along the upper side or the lower side of the continuous diamond-shaped cut line 17, so that there is a clear step in the opening in any case. Can be formed.

Further, by forming one cut line on the front surface side and a zigzag-shaped cut line on the back surface side, it is possible to obtain a cut line that does not hinder the design on the front surface side.

Although the notch 4 shows an I-shaped notch in the embodiment, various shapes such as V-shaped and U-shaped may be used. The laminated films on the front and back sides include, for example, a nylon film (polyamide-based resin film), a biaxially stretched polyethylene terephthalate film, a barrier film such as an aluminum foil as an intermediate layer, and an innermost sealant layer. Uses a low-density polyethylene resin, a linear low-density polyethylene resin, or the like.

According to the step-cuttable packaging bag according to the present invention, for example, it is a resealable packaging bag and can be widely used as a packaging bag for foods, cosmetics, pharmaceuticals and the like.

1 Laminated film on the front side (one film)
2 Laminated film on the back side (the other film)
3 Heat welded part 4 Notch (cut line)
7 Packaging bag 8 Central straight cut line 8a End (inner end)
9 One upper linear cut line 9a Inner end 10 One lower straight cut line 10a Inner end 11 First inclined cut line 11a Inner end 12 Second inclined cut line 13 The other upper linear cut line 13a Inner end 14 The other lower straight cut line Cut line 14a Inner end 15 Upper zigzag cut line 15c, 15d Two sides (sides)
16 Lower zigzag cut line 16c, 16d Two sides (sides)
17 Two sides (sides) on continuous diamond-shaped cut lines 17a and 17b
17c, 17d Lower two sides (sides)
17'Rhombus 17e, 17f Vertex 17g Vertex L1 Virtual extension line

Claims (6)

A heat-welded portion is formed by heat-welding one film and the other film to each other with a predetermined width around them, and cut lines are provided at the same level positions on the left and right ends of the upper portion. In a step-cuttable packaging bag that has easy-to-open means along the virtual extension line connecting the lines
In the easy-opening means of one film, a central linear cut line is formed along the virtual extension line of both cut lines.
On both ends of the central straight cut line, one upper straight cut line and one lower straight cut line parallel to each other above and below each of the left and right cut lines, and one upper and lower straight cut lines. The first inclined cut line connecting both inner ends of the line is formed symmetrically.
The second inclined cut line connecting each inner end of the first inclined cut line and both ends of the central linear cut line is formed symmetrically.
In the easy-opening means of the other film, the other upper linear cut line and the other lower straight cut line, which are parallel to each other above and below each of the left and right cut lines, are provided symmetrically.
An upper zigzag cut line composed of zigzag straight lines, which is a cut line connecting each inner end to the central portion of the other upper straight line on the left and right.
A lower zigzag cut line that connects the inner ends of the left and right other lower linear cut lines to the central portion and is formed in a phase opposite to the upper zigzag cut line.
A score line located between the upper Jiguza grayed-shaped score line and the lower zigzag cut line, the position of the upper and lower vertices of the rhombus position in the lateral direction of the upper and lower apexes of the upper and lower zigzag cut line match At the same time, the left and right vertices of the rhombus are composed of a continuous rhombus cut line located on the virtual extension line.
The positions of both inner ends of the left and right first inclined cut lines are located inside both inner edges of the left and right heat-welded portions, respectively, and a step-cuttable packaging bag. The two adjacent sides of each diamond of the continuous diamond-shaped cut line of the other film are close to and parallel to the adjacent two sides of the upper zigzag cut line.
The step-cuttable packaging bag according to claim 1, wherein the two adjacent sides below each rhombus of the continuous rhombus cut line are parallel to the adjacent two sides of the lower zigzag cut line. The one-sided film and the one-sided and the other-sided upper linear cut lines of the other film are provided at the same level on the front and back sides.
The one-sided film and the one-sided and the other-sided lower linear cut lines of the other film are provided at the same level on the front and back sides.
The score lines is the other hand an upper straight off th line and the other hand the lower straight score line and the one in which is provided at an intermediate position in the vertical direction of the distance according to claim 1 or 2 step cut packing according bag. Claims 1 to 3 in which the central linear cut line of the other film is located at the center position in the vertical direction of the upper zigzag cut line and the lower zigzag cut line of the other film. A packaging bag that can cut steps as described in any of the above. Each diamond of the continuous diamond-shaped cut line of the other film is one in which the central linear cut line of the one film is located along each horizontal diagonal line according to any one of claims 1 to 4. The described step-cutting packaging bag. The left and right vertices of each horizontal diagonal of each rhombus of the continuous rhombus are located at the closest positions above and below the upper zigzag cut line and the lower zigzag cut line.
Claim that the upper and lower vertices of each vertical diagonal of each rhombus of the continuous rhombus are located at the most spaced positions above and below the upper zigzag cut line and the lower zigzag cut line. A packaging bag capable of cutting steps according to any one of 1 to 5.

Images