JP2001106264A - Packaging bag for food - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag for food of which the lug can be easily and securely erected and held and which can be smoothly and securely unsealed. SOLUTION: A bag body 6 opened at the upper end is formed by superposing the obverse film 2 and the reverse film 3 with each other and heat-bonding both side end edges and the lower part of both obverse and reverse films. An incision line 81 is formed in the obverse projection piece 8 protruded lowerward from the lower heat-bonding part 5b of the bag body 6 to form a lug 10 in the packaging bag for food. A pair of right and left folding heat-bonding parts 11 to which the obverse and reverse projection pieces 8, 9 are integrally connected so as to hold the lug 10 at both sides of the lug 10 are provided. Since at least the lower end of the lug 10 is projected downward from between the folding heat-bonding parts 11, when holding the obverse and reverse projection pieces 8, 9 and bending them to the rear side, the lower end of the lug is easily separated from the obverse projection piece 8 and erected, and the lug is smoothly and securely held and the packaging bag for food can be easily unsealed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a food packaging suitable for packaging foods such as sandwiches and nigiri rice, which can be easily and reliably gripped and opened for picking pieces and can smoothly take out the food stored therein. For bags.

[0002]

2. Description of the Related Art Today, many sandwiches are sold in convenience stores and the like. Numerous packaging bags are provided as packaging bags for this sandwich. For example, Japanese Utility Model Publication No. 7-52025 discloses that both side edges of a front film and a back film are thermally welded, and these front and back films are used. Forming a bag body with an upper end opened by forming a seal portion on the lower edge side of the front and back films respectively extending downward from the lower end seal portion of the bag body to form two projecting pieces, And the other protruding piece are integrated by being sealed to form a gripping header, and a food package such as a sandwich formed by forming a knob on the front protruding piece forming the gripping header. Bags have been proposed.

[0003] In the packaging bag for foods such as the sandwich, the gripping header is gripped with one finger while the other finger is used to rub the gripping piece formed on the gripping header to grip the gripping piece. Separate from the header, stand up,
The upright tab is configured to be opened by pulling it toward the seal portion of the bag body.

However, as described above, the knob is separated from the gripping header by rubbing the knob with a fingertip.
When the fingertip and the tab are small in frictional force, the tab cannot be easily separated from the gripping header, which is inconvenient to use.

[0005] In addition, even if the knob is separated, the fingertip only slides on the surface of the knob only. If the knob is not picked up again with two fingertips,
The packaging bag for food such as the sandwich cannot be opened. Such a problem is caused by bending the lower edge of the gripping header toward the back side so that only the tab provided on the front side is separated from the film on the back side, so that the leading end of the tab can be easily formed. However, since the gripping header has the same flexibility over the entire length, even if it is bent to the back side, the tabs are bent together with the back piece in close contact with the back side film. You may not be able to pick.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and enables a tab to be easily and securely raised and grasped, thereby enabling a smooth and reliable opening operation. The present invention provides a food packaging bag capable of performing the following.

[0007]

According to a first aspect of the present invention, there is provided a food packaging bag wherein a front film and a back film are overlapped and both side edges of the front and back films are heat-sealed and the front and back films have a lower edge. An upper end is formed by thermally welding a lower portion having a predetermined interval over the entire width to form a bag body having an open upper end. Of the projecting pieces of the front and back films projecting downward from the lower heat-welded portion of the bag body, In a food packaging bag in which a front U-shaped or U-shaped cut line is provided on a front side projecting piece and a portion surrounded by the cut line is formed as a knob, the knob is provided on both sides of the knob. A pair of left and right bending heat welding portions integrally connecting the front and back projecting pieces so as to sandwich the same, and at least a lower end portion of the knob piece protrudes downward from between the bending heat welding portions. And

According to a second aspect of the present invention, there is provided the food packaging bag according to the first aspect, wherein the pair of left and right bent heat-welding portions are parallel to the lower heat-welding portion of the bag body. It is characterized in that it is formed in the welded part.

A food packaging bag according to a third aspect of the present invention is the food packaging bag according to the first or second aspect, wherein the upper end of the cut line forming the tab is formed by a pair of left and right bent lines. The bag is characterized by projecting upward from the heat-welded portion toward the lower heat-welded portion side of the bag.

[0010]

The operation of the food packaging bag of the present invention will be described. Food such as sandwiches and rice cooked is stored in the bag body of the food packaging bag through the upper end opening, and the upper end opening of the bag body is closed to pack the food.

In order to take out the food stored in the bag of the food packaging bag, the front and back protruding pieces are gripped with one hand and the front and back protruding pieces are bent toward the back side. Until it reaches the bending heat welding part provided on the protruding piece, it bends uniformly without receiving any resistance, but when it reaches the bending heat welding part, the resistance due to the rigidity of this bending heat welding part Under the force, the bent portion is sharply bent with the lower end of the heat-welding portion as a fulcrum. On the other hand, the knob is sandwiched on both sides by the above-mentioned heat-sealing portion for bending, and the portion protruding downward from the heat-sealing portion for bending is shorter, and therefore, compared to the case of the entire length of the knob. Also strong against bending.

Accordingly, the lower end of the knob protruding downward from the lower end of the bending heat-welded portion has the lower end of the bending heat-welded portion bent to the back and back. Without following the protruding piece, maintain its straight state,
With the bending of the front and rear protruding pieces toward the back side, the front and rear protruding pieces are separated from the front side protruding pieces and become upright.

[0013] Thus, the lower end of the tab, which is separated from the front-side protruding piece and stands upright, is smoothly and reliably gripped with the fingertip of the other hand, and the tab is pulled upward. By tearing the front film, the bag is opened and the food in the bag can be taken out through the torn portion of the front film.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As an example of a food packaging bag of the present invention, a sandwich packaging bag will be described with reference to the drawings. As shown in FIGS. 1 and 2, the front and back films 2 and 3 of the food packaging bag 1 are formed of a uniaxially stretched front isosceles triangular uniaxially stretched film which is vertically stretched. The front and back films 2 and 3 are overlapped with each other in a state where the stretching direction is directed in the vertical direction.
The inclined edges 4, 4 on both sides of the front and back films 2, 3 are heat-welded 5a, 5a over the entire length. By performing the heat welding 5b in a strip shape over the entire width, a bag body 6 having an upper end opened at a portion surrounded by the heat welding portions 5a, 5a and the heat welding portion 5b is formed. Note that the upper edge of the front film 2 is made to protrude above the upper edge of the back film 3 by a certain length.

A food storage space 7 for storing a sandwich (food) A is formed between the opposed inner surfaces of the front and back films 2 and 3 forming the bag 6, and the upper end of the bag 6 is formed. The food storage space 7 through the opening
It is configured to be able to store food.

In the front and back films 2 and 3, the front and back projecting pieces 8 and 9 have inverted front trapezoidal lower portions projecting downward from the lower heat welding portion 5 a. In each of the front and rear projecting pieces 8 and 9, the lower end of the front projecting piece 8 projects downward by a certain length from the lower end of the rear projecting piece 9.

An upward U-shaped or U-shaped cut line 81 is provided at the center of the front side projecting piece 8 so as to penetrate between the inner and outer surfaces of the front side projecting piece 8. A tongue-shaped knob is used to attach the eight protruding pieces surrounded by the line 81.
10 is assumed.

A strip 21 of a constant width extending in the vertical direction is integrally attached between the upper end portion in the width direction of the inner surface of the front film 2 and the center portion of the inner surface of the knob 10. I have. Further, the lower end of the band-shaped body 21 existing between the base end (upper end) of the knob piece 10 and the lower heat-welded portion 5b is integrated with the surface facing the back-side protruding piece 9 by heat welding 22. The knob 10 is configured so as not to be inadvertently turned up.

Furthermore, a pair of left and right band-shaped heat-sealing portions for bending are integrated on both sides of the knob 10 so as to sandwich the knob 10 and integrate the vertical intermediate portions of the front and back protruding pieces 8 and 9 with each other. 11 and 11 are provided. That is, the heat-sealing portion for bending
11 and 11 are left and right cut upper end portions 811 of the cut line 81.
a, 811a and the left and right inclined edges 12, 12 of the front and back projecting pieces 8, 9 opposed to the left and right cut upper end portions 811a, 811a in a state parallel to the lower heat welding portion 5b of the bag body 6. And a lower end thereof is formed in a straight shape.

As described above, the bent heat-welded portions 11, 11 are formed as rigid and strong waist portions by integrating the opposing front and back projecting pieces 8, 9 with each other. The lower end portion 101 of the knob 10 protrudes downward by a certain length from between the lower ends of the heat-sealing portions 11 for bending.

Next, how to use the food packaging bag will be described. As shown in FIG. 3, the bag 6 of the food packaging bag
The sandwich A is stored in the food storage space 7 through its upper end opening, and the upper end opening of the food storage space 7 is closed.

In order to eat the sandwich A stored in the food storage space 7 of the bag 6 of the food packaging bag, the lower ends of the front and back projecting pieces 8 and 9 of the food packaging bag are connected to one side. Hold by hand.

Thereafter, as shown in FIG. 4B, when the front and back protruding pieces 8, 9 gripped by one hand are bent toward the back side, the bending provided on the front and back protruding pieces 8, 9 is performed. Heat welding part
Until it reaches 11, 11, it bends uniformly without receiving any resistance, but the lower end (fold curve) 11
1 and 111, the front and back projecting pieces 8 and 9 are connected and integrated with each other to form a rigid and strong waist portion. Due to the resistance of the bending heat-welding portions 11, 11, the lower portions (folding curves) 111, 111 of the bending heat-welding portions 11, 11 are sharply bent around the fulcrum.

On the other hand, the knob 10 formed on the front side protruding piece 8 has only the lower end 101 protruding downward from the lower end of the bending heat welding portion 11, that is, the folding curve 111. The lower end portion 101 of the knob 10 protruding downward has a relatively short length in the vertical direction as compared with the entire length of the knob 10 and a strong waist. Since it is formed from a stretched film whose stretching direction is oriented in the vertical direction, it is formed to be very rigid and strong.

Therefore, when the front and back protruding pieces 8 and 9 are bent rearward from the bending curves 111 and 111 of the bending heat welding portions 11 and 11, the lower end portion 101 of the knob 10 is moved to the position shown in FIG.
As shown in FIG. 5B and FIG.
Without following the bending to the back side of the front side protruding piece 8, separating from the front side protruding piece 8, separating from the front side protruding piece 8 and standing forward.

As described above, the lower end portion 101 of the knob 10 is
Since it is completely separated from the front side protruding piece 8 and is in a standing state, it can be easily and reliably picked with the other hand.

As shown in FIGS. 4C, 4D and 6, while holding the lower ends of the front and back protruding pieces 8, 9 integrally with one hand, the other hand holds the other. When the tab 10 picked by hand is pulled upward, the front film 2 is smoothly and reliably torn from the center in the left-right direction into two along the band-shaped body 21, and through the torn portion. The sandwich (food) A stored in the food storage space 7 can be taken out and eaten.

In the above description, the case where the inner ends of the pair of left and right bending heat welding portions 11 and 11 are provided so as to be continuous with the left and right cut ends of the cut line 81 has been described. As shown in the figure, the inner end of the heat-welding portion 11 for bending may be provided so as to be spaced apart from the left and right cut upper ends 811a, 811a of the cut line 81 by a small interval.

Further, as shown in FIG. 8, the bending heat welding portion 11 may be provided so as to sandwich the cut line 81 at a vertically central portion of the cut line 81. More specifically, the heat-welding portions 11 for bending are formed by a vertically central portion of the left and right cut portions 811, 811 of the cut line 81, and left and right inclined edges of the front and back projecting pieces 8, 9 opposed thereto. 12 and 12 may be juxtaposed along the lower heat-welded portion 5b of the bag body 6. In short, left and right cut lines 811 and 811 are formed from the upper ends of the heat-sealing portions 11 and 11 for bending.
Is protruded upward toward the lower heat welding portion 5b side of the bag 6, and only the lower end of the knob 10 is bent.
It may be configured to protrude downward from between 11, 11. In addition, each of the inner ends of the bending heat-welded portions 11, 11 may be separated from the left and right cut portions 811, 811 of the cut line 81.

Further, as shown in FIG. 9, it is necessary that the outer ends of the bent heat-welded portions 11, 11 also reach the left and right inclined edges 12, 12 of the front and back projecting pieces 8, 9, respectively. Instead, specifically, the heat-sealing portions 11, 11 each having a horizontally long rectangular shape on the front may be provided so as to sandwich the knob 10.

As is apparent from the above description, the bent welding portion 11 is formed by bending the front and back projecting pieces 8 and 9 to the back side.
The front and back protruding pieces 8 and 9 may be provided in such a manner that they can be bent with the bending curve 111 of the bending heat welding portion 11 as a fulcrum.

[0032]

According to the food packaging bag of the present invention, the front film and the back film are overlapped with each other, the both side edges of the front and back films are heat-sealed, and a predetermined distance is provided above the lower edge of the front and back films. The lower part of the bag is heat-sealed over the entire width to form a bag body having an open upper end, and the front-side protruding pieces of the front and back film protruding pieces projecting downward from the lower heat-sealed portion of the bag body. In a food packaging bag in which an upward U-shaped or U-shaped cut line is provided and a portion surrounded by the cut line is formed into a knob, the knob is placed on both sides of the knob so that the knob is sandwiched between the front and back. Since a pair of left and right bending heat welding portions integrally connecting the protruding pieces is provided, at least the lower end portion of the knob is protruded downward from between these bending heat welding portions, Hold the front and back protruding pieces and When bent, these front and back protruding pieces bend uniformly and smoothly until reaching the heat-sealing portion for bending provided on the front and back films, while the knob formed on the front side protruding piece has a pair of right and left bent pieces. The lower end portion is protruded from the lower end between the heat-sealing portions for use, and the lower end portion of the protruding knob is formed to have a strong waist due to its length in the vertical direction.

Further, when the front and back protruding pieces reach the bending heat welding portion, they are subjected to resistance by the rigid bending heat welding portion, and accordingly, the lower end (folding) of the bending heat welding portion is obtained. The entire front and back protruding piece can be largely refracted to the back side with the curve) as a fulcrum. On the other hand, the lower end of the tough tab is maintained in a straight state without following the bending of the front and back protruding pieces to the back side, and is smoothly and reliably separated from the front film and stands forward. Thus, the lower end of the picked piece in the upright state can be smoothly and reliably gripped to smoothly open the food packaging bag, and the food stored therein can be taken out and eaten.

According to a second aspect of the present invention, there is provided the food packaging bag according to the first aspect, wherein a pair of right and left bending heat-welding portions are parallel to the lower heat-welding portion of the bag body. Since it is characterized in that it is formed in the welded portion, the front and back protruding pieces are bent toward the back side, the lower end of the knob is separated from the front side protruding piece, and it is raised and gripped, and then the pulling direction of the knob is Can be determined smoothly and reliably in the direction of the lower heat-welded portion of the bag body, and the opening operation of the food packaging bag can be reliably performed.

A food packaging bag according to a third aspect of the present invention is the food packaging bag according to the first or second aspect, wherein the upper end of the cut line forming the tab is formed by a pair of left and right bent lines. Since it is characterized by being protruded upward from the heat welding part toward the lower heat welding part side of the bag body, the lower end part of the knob piece protruding downward from the bending heat welding part is made strong. After the front and back protruding pieces are bent to the back side and the lower end of the knob is easily and smoothly gripped, the upward pulling direction of the knob is adjusted by the bending heat-sealing portion of the knob. Thus, the food packaging bag can be smoothly and reliably opened by being guided and regulated by the upper portion protruding upward toward the lower heat welding portion side of the bag body.

[Brief description of the drawings]

FIG. 1 is a front view showing a food packaging bag of the present invention.

FIG. 2 is a longitudinal sectional view showing the food packaging bag of FIG.

FIG. 3 is a perspective view showing a state in which food (sandwich) is stored in a food storage space of the food packaging bag of FIG. 1;

FIG. 4 is a longitudinal sectional view of a main part showing a procedure for opening the food packaging bag of FIG. 1;

FIG. 5 is a perspective view showing a use state of the food packaging bag of FIG. 1;

FIG. 6 is a perspective view showing a use state of the food packaging bag of FIG. 1;

FIG. 7 is a front view showing another example of the front and back protruding pieces of the food packaging bag.

FIG. 8 is a front view showing another example of the front and back protruding pieces of the food packaging bag.

FIG. 9 is a front view showing another example of the front and back protruding pieces of the food packaging bag.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 bag for food packaging 2 front film 3 back film 5b heat-sealed part at lower end 6 bag body 7 food storage space 8 front protruding piece 81 cut line 9 back protruding piece 10 knob 101 lower edge of knob 11 bending heat Welded part 111 Lower end of bent heat welded part (folded curve)

Claims (3)

[Claims] 1. A front film and a back film are superposed on each other, and both side edges of the front and back films are heat-welded, and a lower portion of the front and back films, which is spaced apart from the lower edge of the front film by a predetermined distance, is heat-welded over the entire width. This forms a bag with an open upper end, and among the projecting pieces of the front and back films that project downward from the lower heat-sealed portion of the bag, an upward U-shaped or U-shaped cut line is formed in the front projecting piece. In a food packaging bag formed by forming a portion surrounded by the cut line into a knob, a pair of right and left bent pieces integrally connected to the front and back protruding pieces so as to sandwich the knob on both sides of the knob. A food packaging bag comprising: a heat-sealing portion for bending; and at least a lower end of the knob piece protruding downward from between the heat-sealing portions for bending. 2. A food packaging bag according to claim 1, wherein a pair of left and right bending heat welding portions are formed in a straight heat welding portion parallel to a lower heat welding portion of the bag body. . 3. An upper end portion of a cut line forming a tab is projected upward from a pair of left and right bending heat welding portions toward a lower heat welding portion of the bag body. The food packaging bag according to claim 1 or 2.