JPH11301698A - Sandwich packaging bag and manufacture thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sandwich packaging bag for preventing contents from losing its shape. SOLUTION: The sandwich packaging bag includes a bag body 1 wherein both side rims 4, 4 of a surface film 2 and a rear film 3 and tapered ends 5 are heat-fused and an opening 7 is provided at the other end 6, a rectangular protective film 15a provided on an internal side 14 of the surface film 2 for protecting contents of sandwich and a pair of side film pieces 15b, 15b respectively extending from both sides of the protective film 15a, wherein an end of the protective film 15a is fixed to the surface film 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a packaging bag for packaging a sandwich.

[0002]

2. Description of the Related Art Conventionally, as this kind of sandwich packaging bag, there is a bag described in Japanese Utility Model Publication No. 2-3587, which is shown in FIG. And the back film 22 (for convenience), both side edges 23 and the tapered one end 24 are heat-welded, and the other end
A bag body 27 having an opening 26 at 25, and protruding pieces 29, 30 extending from the heat-welded portion 28 on the one end 24, and a protruding piece extending from the front film 21. On piece 29,
This is a bag provided with a photographing piece 32 formed by two substantially parallel cutting lines 31, 31 serving as a starting point of opening.

[0003] When a triangular sandwich is packaged by using a packaging bag having the above-described configuration, a portion corresponding to the slope of the sandwich, in which the contents 33 of the bread can be seen, is used as the front film 21 of the bag body 27. It is inserted through the opening 26 so as to abut, and the opening 26 is closed with a tack label or the like.

Further, when taking out the sandwich from the packaging bag, as shown in FIG. 1 (b), the photographing piece 32 is gripped and the center portion in the width direction of the front film 21 is torn in a strip shape. The bag body 27 was opened in a divided state, and the sandwich was taken out therefrom.

[0005]

However, in the sandwich packaging bag as described above, since the contents 33 of the bread directly contact the inner surface of the front film 21, when the bag body 27 is opened in a divided state, The content 33 sticks to the inner surface 34 of the film torn in a strip shape, or jumps out to the outer surface 35 of the front film 21, so that the appearance is deteriorated, and when the sandwich is taken out in that situation, the hands become dirty. And the handling became very complicated.

[0006] In addition, the conventional packaging bag has a problem in that when the sandwich is packaged, it loses its shape when displayed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has a clean appearance and a sanitary appearance without removing the hands or the bag body when taking out the sandwich. It is another object of the present invention to provide a sandwich packaging bag which can be easily opened and taken out.

It is another object of the present invention to provide a sandwich packaging bag which can prevent the contents from being lost in shape.

[0009]

According to a first aspect of the present invention, there is provided a packaging bag according to the present invention, wherein both sides 4, 4 of a front film 2 and a back film 3 are tapered. The formed bag body 1 having one end 5 side thermally welded and having an opening 7 on the other end 6 side, and a rectangular shape provided on the inner side 14 of the front film 2 for protecting the contents 20 of the sandwich 19. It has a protective film 15a and a pair of side film pieces 15b, 15b extending on both sides of the protective film 15a, respectively. One end of the protective film 15a is a front film.
It is characterized by being fixed to 2. In this manner, since one end of the protective film 15a is fixed to the front film 2, the protective film 15a can be fitted along the contents of the sandwich.

Further, on both sides of the protective film 15a,
Since the side film pieces 15b, 15b are respectively extended, the bag body 1 at the portion where the side film pieces 15b, 15b are formed can be doubled, and therefore the strength of the bag body can be increased. .

Further, the sandwich packaging bag according to the present invention is characterized in that the side film pieces 15b, 15
b is fixed to the backing film 3, and cut lines 15c, 15c are formed at the boundary between the side film piece 15b and the protection film 15a to break the protection film 15a and the pair of side film pieces 15b, 15b. By being formed, the protective film 15a and the side film piece 15b can be easily separated.

Further, the sandwich packaging bag according to the present invention is characterized in that the pair of side film pieces are provided as described in claim 3.
If 15b, 15b is fixed to the back film 3 by being partially sealed in a linear manner from the one end side to the other end side with the back film 3, the seal portion can be formed easily and small.

[0013] The feature of the method for producing a sandwich packaging bag according to the present invention is as described in claim 4, wherein
A method for manufacturing a sandwich packaging bag, wherein both side edges 4, 4 and a tapered one end 5 of a back film 2 and a back film 3 are heat-welded and have an opening 7 on the other end 6 thereof. A rectangular protective film 15a is fixed to the front film 2 from the vicinity of the heat-welded portion on the one end 5 to the vicinity of the opening 7 on the other end 6 on the inner surface 14 of the film 2, and the protective film 15a is fixed.
A pair of side film pieces 15b, 15b, which are respectively extended on both sides of the back film 3 via breaking portions 15c, 15c, are fixed to the backing film 3.From the breaking portion 15c, the protective film 15a and the side film pieces 15b, 15b to form the bag body 1.

As described above, the front rectangular protective film 15a is fixed to the front film 2 on the inner surface 14 of the front film 2, and the side films extending on both sides of the protective film 15a respectively. Fix the pieces 15b, 15b to the backing film 3,
The protective film 15a and the side film pieces are
By separating the protective films 15b and 15b from each other, the protective film 15a and the side film pieces 15b and 15b can be formed from a single film.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an embodiment of a bag body according to the present invention, and FIG.
FIG. 3 is a sectional view taken along line A of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG.

In FIG. 1, reference numeral 1 denotes a bag main body, and the bag main body 1 is a pair of substantially trapezoidal packaging films formed of a synthetic resin film or the like (for convenience, these two films are formed as a front film and a back film). ), And both side edges 4, 4 of the front film 2 and the back film 3 respectively.
A sealing portion 5 which is sealed by heat welding is provided on one end side formed in a tapered shape, that is, on the upper bottom side of the trapezoid, so that the other end 6, that is, the lower bottom side of the trapezoid forms an opening 7. ing. In this embodiment, the back film 3 is formed such that the length of the opening 7 side is longer than that of the front film 2 (see FIGS. 1 and 2).

At the upper end of the bag body 1, there is provided a seal portion 5 which has been weakly welded in the lateral direction in FIG. 1, and a top film 2 and a back film 3 are provided on the top of the seal portion 5, respectively. It is extended to form protruding pieces 9 and 10 (see FIG. 2), and on the upper side of the protruding pieces 9 and 10, similarly to the seal part 5, there is provided a seal part 8 which has been weakly heat-welded in the lateral direction. Is provided.

Further, on the inner surface 14 of the front film 2 (see FIGS. 2 and 3), a rectangular transparent material, for example, synthetic resin, extends from the vicinity of the seal portion 5 to the vicinity of the opening 7 on the other end 6. A protection film 15a made of a film or the like is provided, and is fixed by being partially heat-welded at welding portions 17a, 17a provided at an end 16 in the longitudinal direction (that is, the lower side in the vertical direction in FIG. 1). Have been.

On both sides of the protective film 15a, side film pieces 15b, 15b formed of the same synthetic resin film as the protective film 15a extend respectively. A cutting line 15c formed by a perforation is provided at a boundary between the protective film 15a and the side film pieces 15b, 15b to separate the protective film 15a from the pair of side films 15b, 15b. .

Further, as shown in FIG. 3, the respective side film pieces 15b, 15b are fixed by being adhered to the back film 3 by bonding portions 17b, 17b formed by an adhesive or the like. I have. The bonding portions 17b, 17b are, as shown in FIG.
From the one end 18 side of the side film piece 15b to the other end 16 side (in FIG. 1, it is formed from the side edge 4 of the bag body 1 to the other end 16), it is formed in a substantially linear shape. ing.

The protective film 15a and the side film pieces 15b, 15b are separated at the cutting lines 15c, 15c, so that the protective film 15a is on the front film 2 and the side film pieces 15b, 15b are on the back film 3. Attached to each.

In order to accommodate the triangular sandwich 19 in the sandwich packaging bag formed as described above, the triangular sandwich 19 is inserted into the opening portion as shown in FIG.
7, the protective film 15a is inserted so that the contents (that is, the parts) 20 of the sandwich 19 abut, and the opening 7 is folded and sealed with a display label or the like.

Here, one end 16 of the side film piece 15b is provided.
Since only the side is welded to the bag body 1, the protective film
When the insert 15a is inserted so that the contents 20 of the sandwich 19 abut, there is no possibility that the protective film 15a is rolled up, and further, the contents 20 of the sandwich 19 are not wrinkled or biased in the protective film 15a. , Can be brought into close contact.

Further, since the film is doubled by the side film pieces 15b, 15b and the back film 3, the strength of the film is increased, and the bonding portions 17b, 17b are formed substantially linearly. As a result, the back film 3 to which the side film pieces 15b are adhered plays the role of a pillar, so that the contents contained therein can be prevented from being deformed.

The triangular sandwich 19 packaged as described above can be taken out by grasping and pulling the back film 3 or the like so that the heat-welded portion at one end 5 is easily peeled off. .

As described above, one film is welded and fixed to the front film 2 at the center thereof, and is adhered and fixed to the back film 3 at both sides thereof, so that the protective film 15a and the side films are secured. The film pieces 15b, 15b can be formed.

In the above embodiment, the front film
2 was made shorter than the backing film 3, but this was
The back film may be formed shorter than the front film, and the front film 2 and the back film 3 may have the same length.

In the above embodiment, the entire boundary between the protective film 15a and the side film pieces 15b, 15b is
Although the cutting line 15c formed by the perforation as a break portion was formed, the break portion may be provided at least on one end side of the boundary between the protective film 15a and the side film pieces 15b, 15b, for example, only on the opening 7 side. In that case, also open the bag body 7
At the time of opening, it is enough to separate the protective film 15a partially sealed to the front film 2 and the pair of side film pieces 15b and 15b sealed to the back film.

Further, the side film pieces 15b, 15b do not necessarily need to be sealed to the back film 3 as in the above-described embodiment, and need not be sealed to, for example, either the front film or the back film.

As described above, when the side film pieces 15b, 15b are released, the protective film 15a is adhered to the side film pieces 15b, 15b when the bag body 1 is opened from the opening 7. The side of the film, ie, along the side of the front film 2, is in a state where two sheets of the front film are brought together, so that the front film can be given a stiffness and the inserted contents can be prevented from being deformed.

Furthermore, the side film pieces 15b, 15
When b is released, there is no need to provide a cutting line at the boundary between the protective film 15a and the side film pieces 15b, 15b.

The size of the protective film 15a is not limited to the above-described embodiment, but may be any size as long as the content 20 of the sandwich 19 accommodated in the bag body 1 can be protected.

Further, the fixing of the protective film 15a and the side film pieces 15b, 15b to the front film 2 and the back film 3 is not limited to the above-mentioned adhesive or heat welding, but may be, for example, adhesion by an adhesive. The shape may not be limited to a linear shape, but may be a point seal, for example.

In the present invention, the protective film 15
a corresponds to the side where the a is provided, that is, the slope of the sandwich,
The surface film for convenience is the side where the surface with much exposure is abutted
Although it is called 2, there is virtually no difference between the front film and the back film.

[0035]

According to the packaging bag of the present invention, the protective film can be made to fit exactly into the contents of the sandwich.

Further, if side film pieces are respectively extended on both sides of the protective film, the bag body can be doubled, so that the strength of the bag body can be increased, and Even when the contents are accommodated, it is possible to prevent the contents from being deformed.

Further, if the side film piece is fixed to the backing film and a cutting line is formed at at least one end of the boundary between the side film piece and the protective film, the protective film can be easily connected to the protective film. The side film pieces can be separated.

Further, if the side film piece is fixed to the back film by being partially sealed linearly from the one end side to the other end side with the back film, the sealing portion can be formed easily and small. be able to.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a packaging bag according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a partially broken perspective view showing a use state of the embodiment of the packaging bag according to the present invention.

FIG. 5A is a plan view showing an example of a conventional packaging bag.
(B) is a perspective view showing the opened state of the packaging bag of (A).

[Explanation of symbols]

 1 Bag body 2 Front film 3 Back film 4 Side edge 5 One end 6 Other end

Claims (4)

[Claims] 1. Both sides (4) and (4) of a front film (2) and a back film (3) and a tapered one end (5) side are heat-welded, and are attached to the other end (6) side. Bag body (1) with opening (7)
And a rectangular protective film (15a) provided on the inner surface side (14) of the front film (2) to protect the contents (20) of the sandwich (19), and on both sides of the protective film (15a). Sandwich packaging, comprising a pair of side film pieces (15b) and (15b) extending respectively, wherein one end of the protective film (15a) is fixed to the front film (2). For bags. 2. The pair of side film pieces (15b), (15b)
Is fixed to the back film (3), and a boundary between the pair of side film pieces (15b), (15b) and the protection film (15a) is provided at the boundary between the protection film (15a) and the pair of side film pieces. (1
The sandwich packaging bag according to claim 1, wherein break portions (15c) and (15c) are formed to break 5b) and (15b). 3. The pair of side film pieces (15b), (15b)
3. The sandwich packaging bag according to claim 2, wherein the bag is fixed to the back film (3) by partially sealing the back film (3) linearly from one end to the other end. 4. Both sides (4) and (4) of the front film (2) and the back film (3) and one end (5) formed to be tapered are heat-welded, and the other end (6). A method for manufacturing a sandwich packaging bag having an opening (7) at the inner surface (14) of the front film (2) from the vicinity of the heat-welded portion at the one end (5) to the other end (6). Rectangular protective film over the vicinity of the opening (7)
(15a) is fixed to the front film (2), and the protective film (1
5a) is fixed to the back film (3) with a pair of side film pieces (15b) and (15b) extending on both sides through the break portions (15c) and (15c), respectively. (15c) A method for producing a sandwich packaging bag, comprising separating a protective film (15a) and side film pieces (15b, 15b) from (15c) to form a bag body (1).