JP4056851B2 - Food packaging bags - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a food packaging bag for packaging foods such as sandwiches and castellas (hereinafter referred to as “sandwiches”), and more specifically, for foods that are properly opened and the packaged sandwiches can be taken out properly. Related to packaging bags.
[0002]
[Prior art]
Right-angled triangular sandwiches are packaged and sold in food packaging bags as shown in FIGS. In this packaging bag for food, both side edges 111 and 121 of the trapezoidal front film 110 and the back film 120 that are superimposed as shown in FIG. The “upper” side is sealed by a strip-shaped seal portion 101, and the wide other end (hereinafter referred to as “lower”) side can be opened by the opening 102. In order to make the opening 102 easy to open, the front film 110 is formed slightly shorter than the back film 120 as shown by the dotted line in FIG. 7, or the back film 120 is formed slightly shorter than the front film 110. ing.
[0003]
Further, the upper side from the seal portion 101 is the protruding pieces 112 and 122 in which the front film 110 and the back film 120 are overlapped, and the periphery of the protruding pieces 112 and 122 is extremely finely sealed by heat. In some cases, the upper edges of the protruding pieces 112 and 122 have a design-rich shape such as an arc shape or a wave shape.
[0004]
Further, the protruding piece 122 of the back film 120 is provided with an inverted U-shaped cut line 123, and the inside of the cut line 123 is a tongue-shaped knob piece 124. Since the front film 110 and the back film 120 are merely superimposed, the knob 124 can be picked up. For example, on the inner surface of the back film 120, a thin strip-shaped cutting means (hereinafter referred to as “cut tape”) for tearing the back film 120 from the knob 124 to the vicinity of the opening 102 across the seal portion 101. ) 103 is pasted.
[0005]
In such a packaging bag for food, the front film 110 and the back film 120 are folded from each other at a right angle as shown in FIG. And the opening 102 is opened in a rectangular shape, thereby forming a bag-shaped space 104 having substantially triangular side surfaces. Sandwich S is accommodated in this space 104, and the front film 110 and the back film 120 on the opening 102 side are folded as shown in FIG. 9 to form a bottom 105, and the bottom 105 is an adhesive tape (not shown). It is sealed by.
[0006]
In order to eat the packaged sandwich S, the cut piece 103 provided on the protruding piece 122 of the back film 120 is picked and pulled straight downward so that the cut tape 103 is sealed as shown in FIG. The back film 120 of 101 is cut and then pulled straight downward to tear the back film 120 downward. And when the back film 120 is torn to the bottom part 105, the packaging bag for foods is opened correctly and the sandwich S can be taken out from the torn back film 120 side.
[0007]
In addition, a sandwich packaging bag in which one protruding piece is further protruded from the other protruding piece, two parallel cutting lines are provided at the center of the protruding part, and a gap between the cutting lines is provided is a fair 2- No. 32877 is disclosed.
[0008]
[Patent Document 1]
Japanese Utility Model Publication No. 2-332587
[Problems to be solved by the invention]
In the conventional food packaging bag, when the knob piece 124 is pulled not diagonally downward but obliquely downward, when the knob piece 124 passes through the seal portion 101, Power is likely to be generated. Then, the back film 120 is not torn toward the bottom portion 105 by the cut tape 103, and as shown by a one-dot chain line in FIG. 9, the bent corner portions 115 and 125 of the back film 120 from the seal portion 101, and the back film 120 and the front film 120 The film 110 is torn toward the side edges 121 and 111 where the film 110 is sealed.
[0010]
Then, it becomes difficult to take out the sandwich S that has been accommodated. Furthermore, since the side edges 121 and 111 of the back film 120 and the front film 110 are only extremely finely sealed, they are easily torn at a stretch. When the back film 120 is torn from the corners 115, 125 to the side edges 121, 111, the back film 120 is torn to the bottom 105 of the side edges 121, 111 at a stretch, and the sandwich S may spill out.
[0011]
Further, when the knob piece 124 is pulled with the protruding pieces 112 and 122, the knob piece 124 and the protruding pieces 112 and 122 may be cut. Then, the back film 120 cannot be opened, and it becomes difficult to take out the sandwich S.
[0012]
Then, this invention makes it a subject to provide the packaging bag for foods which opened correctly and was able to take out the packaged sandwich appropriately.
[0013]
[Means for Solving the Problems]
The packaging bag for food according to the present invention is for food in which both side edges of the front film and the back film that are overlaid are sealed, one end side is sealed by a seal part, and the other end side can be opened by an opening part. In the packaging bag, the opening start point, which is the starting point for tearing the front film or the back film, is between the seal part and the opening part of the film and is in the vicinity of the seal part, and is directed from the seal part to the opening part. It is characterized by being provided by a cut line having a shape that can be torn in a direction and a direction perpendicular to the direction .
[0014]
According to the packaging bag for food, the opening start point, which is the starting point for tearing the front film or the back film, is provided between the seal portion and the opening portion and in a position close to the seal portion. The film can be torn and opened without intersecting the seal. Therefore, at the time of opening, no force in the direction along the seal portion is generated in the film to be torn, and the film is not torn from the corner toward the side edge, but is torn straight from the opening start point to the opening.
[0015]
Also, by opening sealed origin is constituted by score lines, simply by adding a small force to the opening start point, score line becomes long, it is possible to tear the film continues.
[0016]
The film after being torn toward the open mouth, by tearing in the direction the perpendicular, can be widely opened toward the opening from the seal portion. Such a score line can be, for example, an X-shape or an inverted Y-shape.
[0017]
Moreover, it is preferable that a sealing and opening piece covering the opening start point is attached to the opening start point. If the opening start point is composed of a score line, outside air or dust may enter the inside of the score line, but the sealing and unsealing piece should be affixed with the score line. Therefore, it is possible to prevent outside air, dust, and the like from entering the inside through the score line. In addition, even if the opening start point is not a score line but is composed of an extremely thin film that can be easily broken, the sealing and unsealing piece can be made difficult to break by sticking the opening start point of the extremely thin film. it can.
[0018]
Furthermore, it is preferable that the sealing and unsealing piece is formed by continuously forming a sticking portion stuck to the opening start point and a knob portion not sticking to the film to be torn. The film may be torn by picking the knob and pulling to the opening side in the state where the sticking part is attached to the opening starting point on the side to be torn, or the knob is picked and attached. The part may be completely peeled off from the opening starting point, and the opening starting point may be picked again to tear the film.
[0019]
Further, the film may be provided with cutting means for tearing the film at least from the opening start point or from the position close to the opening start point toward the opening. The one film is guided by the cutting means and is torn straight, and the packaging bag for food is accurately opened.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a packaging bag for food according to the present invention will be described with reference to FIGS.
[0021]
Similarly to the conventional packaging bag for food of the present embodiment, both side edges 11 and 21 of the overlapped trapezoidal front film 10 and back film 20 are extremely finely sealed by heat, and one end having a narrow width (hereinafter, “ The upper side is sealed by a band-shaped seal portion 1, and the wide other end (hereinafter referred to as “lower”) side can be opened by the opening 2. In order to make the opening 2 easy to open, the front film 10 is formed slightly shorter than the back film 20 as shown by the dotted lines in FIGS. 1 to 4, or the back film 20 is slightly shorter than the front film 10. It is short.
[0022]
Furthermore, the upper side from the seal portion 1 is the protruding pieces 12 and 22 in which the front film 10 and the back film 20 are overlapped, and the periphery of the protruding pieces 12 and 22 is extremely finely sealed by heat. A trademark or the like is printed on the protruding pieces 12 and 22, and the protruding pieces 12 and 22 are picked so that the packaging bag can be taken out from the display shelf. Furthermore, the upper edges of the protruding pieces 12 and 22 may have a shape with a good design such as an arc shape or a wave shape.
[0023]
And the packaging bag for foodstuffs of this embodiment is not the protrusion piece 22 of the back film 20, but the sealing part 1 and the opening part 2 of the back film 20, for example, the opening starting point 6 which is the starting point which tears the back film 20 It is characterized by being provided at a position close to the center of the seal portion 1. The unsealing start point 6 is preferably formed by a cut line formed in the back film 20, but can also be formed by a perforation or an extremely thin film that can be easily broken.
[0024]
If the unsealing start point 6 is constituted by a score line or a perforation, outside air, dust or the like enters the inside from the score line or the perforation, and the contained sandwich S (see FIG. 8) dries or becomes improper. It becomes hygiene. In addition, if the opening start point 6 is composed of an extremely thin film, it is easy to tear and becomes unsanitary when it is torn.
[0025]
Therefore, a sealing / opening piece 7 is attached to the opening start point 6 so that outside air, dust, etc. do not enter the inside from the opening start point 6 of the cut line or perforation, or the ultrathin film is not opened. The opening start point 6 is not torn. The sealing and unsealing piece 7 is formed, for example, by continuously forming a sticking portion 7a attached to the opening start point 6 and a knob portion 7b that is not attached to the back film 20 while being positioned on the seal portion 1 side. Has been.
[0026]
And a score line is comprised by the line which cross | intersects diagonally with respect to a tearing direction so that the back film 20 can be opened in a wide range. That is, for example, the cut line has an X-shape as shown in FIGS. 1 to 4, a reverse Y-shape, an inverted V-shape, a C-shape, or the like, and a direction perpendicular to the direction from the seal portion 1 to the opening portion 2. It is preferable that the shape can be torn.
[0027]
When the score line is formed in an X-shape, an inverted V-shaped section 6a on the opening 2 side, a V-shaped section 6b on the seal section 1 side, and a square shape and an inverted character shape on each side edge 21 side. It is constituted by sections 6c and 6d.
[0028]
Further, on the inner surface of the back film 20, cutting means (hereinafter referred to as “cut tape”) 3 for guiding the direction in which the back film 20 is torn is provided from the opening start point 6 toward the opening 2. It is preferable that the cut tape 3 has a shape that tears the back film 20 with a wide width other than the thin belt-like member as shown in FIG. That is, the cut tape 3 is, for example, an elongated pentagonal strip-shaped member as shown in FIG. 2, a downward substantially U-shaped member as shown in FIG. 3, an inverted Y-shaped member as shown in FIG. Various members such as a V-shaped member can be used. Such a cut tape 3 has a width set within the range of the length of the seal portion 1.
[0029]
It is preferable that the upper end portion of the cut tape 3 of any shape is provided at the opening start point 6. On the other hand, the lower end portion of the cut tape 3 is preferably provided up to the vicinity of the opening 2 as shown in FIGS. 1 to 3, but is provided short from the opening start point 6 toward the opening 2 as shown in FIG. 4. You may be made to do. Even if the cut tape 3 is provided short, the back film 20 is torn by the short cut tape 3 and is torn toward the bottom 5. However, since the back film 20 is uniaxially stretched, the direction to be surely torn can be regulated.
[0030]
In addition, as in the prior art, the front film 10 and the back film 20 are folded at a right angle from the overlapped state to have a corner portion 23, whereby the opening portion 2 is opened in a rectangular shape and a space is formed. Is done. A sandwich S (see FIG. 8) is accommodated in the space, and the bottom 5 where the front film 10 and the back film 20 on the opening 2 side are folded is sealed with an adhesive tape (not shown) or the like.
[0031]
And in order to eat the sandwich S packaged in the packaging bag for food of this embodiment, the picking part 7b of the sealing and unsealing piece 7 is picked and pulled straight downward. Until the sealing and unsealing piece 7 is pulled, the sticking portion 7a of the sealing and unsealing piece 7 is stuck to the unsealing start point 6, so that outside air, dust, etc. are generated from the unsealing start point 6 of the cut line or perforation. The quality of the sandwich S is maintained because it does not penetrate inside and the opening 6 of the ultrathin film is not broken.
[0032]
When the opening start point 6 is an X-shaped cut line, when the knob 7b of the sealing / opening piece 7 is pulled in the direction of the bottom 5 directly below as shown in FIG. 5, the sealing / opening The sticking part 7a of the piece 7 is peeled off from the other pieces 6b, 6c, 6d, and the reverse V-shaped piece 6a to which the sticking part 7a is stuck, and the peeled-shaped piece 6c are reversed. The cut line at the boundary with the section 6d is torn. Since the tearing direction of the V-shaped, square-shaped, and inverted-shaped sections 6b, 6c, 6d does not coincide with the direction in which the sealing / opening piece 7 is pulled, the sealing / opening piece 7 has the sections 6b, 6c, The reverse V-shaped piece 6a is easily peeled off from 6d, and the tearing direction coincides with the pulling direction of the sealing / opening piece 7, so that the sealing / opening piece 7 is not peeled off from the piece 6a. The film 20 can be torn towards the bottom 5.
[0033]
The opening start point 6 is provided between the seal portion 1 and the opening portion 2, and the cut tape 3 does not pass through the seal portion 1, so that no force in the direction along the seal portion 1 is generated and the back film 20 is bent. The side edges 11 and 21 sealing the back film 20 and the front film 10 from the corner 23 are not torn.
[0034]
When the cut tape 3 shown in FIGS. 2 and 3 is attached, the back film 20 is torn at the opening start point 6 of the score line to the cut tape 3 and the side edges 21 from the corners 23 and 23. The food packaging bag can be opened with a wide width by being torn along the cut tape 3 toward the opening 2 without being torn. Further, the back film 20 to which the cut tape 3 shown in FIG. 4 is attached is also torn with a wide width from the lower end portion divided into two forks to the bottom portion 5, and the packaging bag for food can be opened. .
[0035]
On the other hand, since the lateral side of the unsealing start point 6 is not torn, the plane portion partitioned between the pair of corner portions 23 and 23 can be obtained by picking and expanding the square-shaped piece 6c and the reverse-shaped piece 6d. The sandwich S can be taken out very easily with the maximum opening.
[0036]
When the opening starting point 6 is an X-shaped score line and the square-shaped section 6c and the reverse-shaped section 6d are picked and expanded, as shown in FIG. 6, the inverted V-shaped section 6a and the V-shaped section 6d By setting the angle β of the segment 6b to 60 degrees and the angle α of the square-shaped segment 6c and the inverted segment 6d to 120 degrees, it is easy to tear in an appropriate direction.
[0037]
In any case, the back film 20 does not intersect with the seal portion 1 and is torn into a wide band, so that the sandwich S can be properly taken out from the opened food packaging bag.
[0038]
The present invention is not limited to the embodiment of the invention and can be variously modified within the scope of the technical matters described in the claims. For example, the opening start point 6 may be provided between the seal portion 1 and the opening portion 2 of the front film 10 and in a position close to the seal portion 1. Further, the cutting means 3 may be provided at a position close to the opening start point 6.
[0039]
Further, both side edges 11 and 21 of the front film 10 and the back film 20 can be sealed not by heat but by an adhesive or the like. Further, the cutting means 3 can be perforated instead of the cut tape. However, when the uniaxially stretched back film 20 is used, the cutting means 3 may not be provided.
[0040]
The vertical positional relationship described in the detailed description of the invention is the positional relationship shown in the figure, and it goes without saying that the actual vertical positional relationship may be different.
[0041]
【The invention's effect】
According to the present invention, the opening start point, which is the starting point for tearing the film, is provided between the seal portion and the opening portion of the front film or the back film to be torn and in the vicinity of the seal portion. The film is torn without crossing the seal. Therefore, the film is torn straight from the opening start point to the opening side, and can be opened accurately. As a result, the packaged sandwich can be prevented from popping out and spilling out.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a food packaging bag according to the present invention. FIG. 2 is a front view showing a modification. FIG. 3 is a front view showing another modification. FIG. 5 is a perspective view showing an embodiment of a packaging bag for food according to the present invention. FIG. 6 is a main portion showing an embodiment of a packaging bag for food according to the present invention. Fig. 7 is a front view of a conventional food packaging bag. Fig. 8 is a perspective view of a conventional food packaging bag. Fig. 9 is a perspective view of a sandwich packaged by a conventional food packaging bag. [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Seal part 2 ... Opening part 3 ... Cutting means (cut tape)
6 ... opening start point 7 ... sealing and opening piece 10 ... front film 11 ... side edge 20 ... back film 21 ... side edge

Claims (4)

In food packaging bags in which both side edges of the superposed front film and back film are sealed, one end side is sealed by a seal part, and the other end side can be opened by an opening part,
The opening start point, which is the starting point for tearing the front film or the back film, is between the seal part and the opening part of the film and in the position close to the seal part, the direction from the seal part to the opening part, and the direction A packaging bag for food, which is provided by a cut line having a shape that can be torn in a direction perpendicular to the direction . 2. The food packaging bag according to claim 1, wherein the score line has an X shape or an inverted Y shape. The packaging bag for food according to claim 1 or 2 , wherein a sealing and opening piece covering the opening starting point is attached to the opening starting point. The said film, in any one of claims 1 to 3, the cutting means, characterized in that it is provided toward the opening from a position close to at least opening the starting point or opening start point for tearing the film The packaging bag for food as described.

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