JP4409006B2 - Food packaging bags - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a food packaging bag suitable for packaging foods such as sandwiches and rice balls, which can be easily and reliably grasped and opened, and can smoothly take out food stored therein.
[0002]
[Prior art]
Today, many sandwiches are sold at convenience stores. A large number of packaging bags are provided as sandwich packaging bags. For example, in Japanese Utility Model Publication No. 7-52025, both side edges of a front film and a back film are thermally welded, and these front and back films are also provided. Forming a seal body on the lower edge side of the bag to form a bag body having an open upper end, and extending the front and back films downward from the bottom seal portion of the bag body to form two protruding pieces, A food header such as a sandwich is formed by forming a gripping header by integrating the projecting piece and the other projecting piece by sealing, and forming a picking piece on the front side projecting piece forming the gripping header Bags have been proposed.
[0003]
And in the packaging bag for foods such as sandwiches, the picking piece is separated from the holding header by rubbing the picking piece formed on the holding header with the other finger while holding the holding header with one finger. It is configured to stand up and open by pulling the raised knob piece toward the seal portion of the bag body.
[0004]
However, as described above, the knob is rubbed with the fingertip so that the knob is separated from the gripping header and is raised, so when the frictional force between the fingertip and the knob is small, the knob Can not be easily separated from the header for gripping, and there is a problem that the usability is poor.
[0005]
In addition, since the fingertip is only in sliding contact with the surface of the picked piece even if the picked piece is separated, if the picked piece is not picked up again with two fingertips, the food such as the sandwich The packaging bag cannot be opened. Such a problem is that if the bottom edge of the gripping header is bent to the back side, and only the tab provided on the front side is separated from the film on the back side, the tip of the tab is easily removed. However, since the gripping header has the same flexibility over its entire length, it can be bent together with the gripping piece in close contact with the backside film even if it is folded to the backside. May not be able to be picked.
[0006]
[Problems to be solved by the invention]
The present invention has been made in view of such problems, and provides a food packaging bag that can easily and reliably stand and grip a knob and can perform an opening operation smoothly and reliably. To do.
[0007]
[Means for Solving the Problems]
The food packaging bag according to claim 1, wherein the front film and the back film are overlapped to thermally weld both side edges of the front and back films, and a lower portion having a predetermined interval upward from the lower edge of the front and back films. A bag body having an upper end opened by thermal welding over the entire width is formed, and among the projecting pieces of the front and back films projecting downward from the heat welding portion of the lower part of the bag body, the front side projecting piece has an upward U-shape. Alternatively, in a food packaging bag in which a U-shaped cut line is provided and a portion surrounded by the cut line is formed into a pick piece, the front and back protruding pieces are integrated so as to sandwich the pick piece on both sides of the pick piece. together are provided heat seal parts for a pair of left and right bent connected, the inner edge of the heat seal parts for these folding in a state of being continuous with the right and left cut end of the cut line forming the knob piece heat for these bent provided Characterized in that the inter-adhering part is protruded downward at least the lower end of the knob piece.
[0008]
Furthermore, the food packaging bag according to claim 1 is characterized in that the pair of right and left bent heat welding portions are formed in a straight heat welding portion parallel to the lower heat welding portion of the bag body.
[0009]
The food packaging bag according to claim 2 is the food packaging bag according to claim 1, wherein the upper end portion of the cut line forming the knob is moved from the pair of left and right folding heat welding portions to the bag body. It is characterized by projecting upward toward the lower heat welding part side.
[0010]
[Action]
The use point of the food packaging bag of the present invention will be described. Foods such as sandwiches and hand-meat rice are stored in the bag body of the food packaging bag through the upper end opening, and the food is packaged by closing the upper end opening of the bag.
[0011]
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. It will bend evenly without receiving any resistance until it reaches the bent heat welding part, but when it reaches the bending heat welding part, it receives resistance due to the rigidity of the bending heat welding part. Thus, the bending is rapidly refracted with the lower end of the bending heat welding portion as a fulcrum. On the other hand, the knob piece is sandwiched on both sides by the bending heat welding portion, and the portion projecting downward from the bending heat welding portion is shortened. Also strong against bending.
[0012]
Therefore, the lower end portion of the knob piece protruding downward from the lower end of the bending heat welding portion is a front and back protruding piece bent to the back side with the lower end of the bending heat welding portion as a folding line. Without following, the straight state is maintained, and the front and back projecting pieces are separated from the front projecting pieces as the front and back projecting pieces are bent to the back side, and stand up toward the front.
[0013]
Thus, the front film is obtained by smoothly and surely gripping the lower end portion of the knob piece in a standing state separated from the front-side protruding piece with the fingertip of the other hand and pulling the knob piece upward. Can be opened to open the bag, and the food in the bag can be taken out through the tear portion of the surface film.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
As an example of the 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 made of a uniaxially stretched film having a front inverted truncated isosceles triangle shape that is stretched in the vertical direction. And the said front and back films 2 and 3 are piled up in the state which orient | assigned the extending | stretching direction to the up-down direction, and both sides inclined edge 4, 4 of these front and back films 2 and 3 is heat-welded 5a over the full length. 5a, and further, the lower part of the front and back films 2 and 3 having a predetermined interval above the lower end thereof is thermally welded in a band shape over the entire width, whereby the heat welded parts 5a and 5a and the A bag body 6 having an upper end opened at a portion surrounded by the heat welding portion 5b is formed. In addition, it is set as the state which made the upper end edge part of the said surface film 2 protrude upwards only a fixed length rather than the upper end edge of the said back film 3. FIG.
[0015]
And the food storage space part 7 for accommodating sandwich (foodstuff) A is formed between the opposing inner surfaces of the front and back films 2 and 3 forming the bag body 6, and through the upper end opening of the bag body 6. The food storage space 7 is configured to store food.
[0016]
Further, in the front and back films 2 and 3, front and back projecting pieces 8 and 9 are formed with a front inverted trapezoidal lower part projecting downward from the lower heat welding portion 5 b. In these front and back protruding pieces 8 and 9, the lower end portion of the front side protruding piece 8 protrudes downward by a certain length from the lower end of the back side protruding piece 9.
[0017]
An upper U-shaped or U-shaped cut line 81 is provided in the center of the front-side protruding piece 8 so as to penetrate between the inner and outer surfaces of the front-side protruding piece 8. 8 parts of the front-side protruding piece surrounded are used as a tongue-shaped knob piece 10.
[0018]
In addition, a band-like body 21 having a certain width directed in the vertical direction is integrally attached between the upper end portion in the width direction on the inner surface of the surface film 2 and the inner center portion of the knob piece 10. Further, the lower end portion of the band-like body 21 existing between the base end portion (upper end portion) of the knob piece 10 and the lower thermal welding portion 5b is integrated with the opposite surface of the rear side protruding piece 9 by thermal welding 22. The knob 10 is configured so as not to inadvertently lift up.
[0019]
Further, a pair of left and right belt-like bending heat-welding portions 11 and 11 in which the middle portions in the vertical direction of the front and back protruding pieces 8 and 9 are integrated on both sides of the knob 10 so as to sandwich the knob 10. Is provided. That is, the bending heat-sealing portions 11, 11 are the left and right cut upper ends 811a, 811a of the cut line 81 and the left and right inclined ends of the front and back protruding pieces 8, 9 facing the left and right cut upper ends 811a, 811a. Between the edges 12, 12, the bag body 6 is provided in parallel with the lower heat welding portion 5 b, and its lower end is formed in a straight shape.
[0020]
Further, as described above, the bending heat-welding portions 11 and 11 are formed in a rigid and strong waist portion by integrating the opposed front and back protruding pieces 8 and 9 portions. The lower end portion 101 of the knob 10 protrudes downward from the lower end of the thermal welding portions 11, 11 for a certain length.
[0021]
Next, how to use the food packaging bag will be described. As shown in FIG. 3, the sandwich A is stored in the food storage space portion 7 of the bag 6 of the food packaging bag through the upper end opening, and the upper end opening of the food storage space 7 is closed.
[0022]
Thus, in order to eat the sandwich A stored in the food storage space 7 of the bag body 6 of the food packaging bag, the lower ends of the front and back protruding pieces 8, 9 of the food packaging bag are held with one hand. To do.
[0023]
Thereafter, as shown in FIG. 4B, when the front and back protruding pieces 8 and 9 held by one hand are bent toward the back side, the heat welding for bending provided on the front and back protruding pieces 8 and 9 is performed. Until reaching the part 11, 11, it bends uniformly without receiving any resistance, but when it reaches the lower end (folding curve) 111, 111 of the heat welding part 11, 11 for bending, this part is opposed Since the front and back projecting pieces 8 and 9 are connected and integrated to form a rigid and strong part, the front and back projecting pieces 8 and 9 have resistance to the heat welding parts 11 and 11 for bending. In response to this, the lower ends (folding curves) 111, 111 of the bending heat welding portions 11, 11 are bent sharply.
[0024]
On the other hand, the knob 10 formed on the front protruding piece 8 has only its lower end 101 protruding downward from the lower end of the bending heat welding part 11, that is, the folding line 111. The lower end portion 101 of the knob 10 that protrudes downward is relatively short in the vertical direction compared to the entire length of the knob 10 and has a strong waist. Since it is formed from a stretched film whose direction is directed in the vertical direction, it is formed to be very rigid and strong.
[0025]
Therefore, when the front and back protruding pieces 8 and 9 are bent from the folding lines 111 and 111 of the bending heat-welding portions 11 and 11 toward the back side, the lower end portion 101 of the knob 10 is shown in FIG. As shown in FIG. 5, without following the bending of the front and back protruding pieces 8 and 9 to the back side, the straight state is maintained, separated from the front protruding piece 8, detached, and erected forward. It becomes.
[0026]
Thus, the lower end portion 101 of the knob piece 10 is completely detached from the front-side protruding piece 8 and is in an upright state, so that it can be easily and reliably picked with the other hand.
[0027]
Then, as shown in FIGS. 4C, 4D, and 6, it is picked with the other hand while maintaining the state where the lower end portions of the front and back protruding pieces 8, 9 are integrally held with one hand. However, when the knob 10 is pulled upward, the front film 2 is smoothly and reliably torn from the center in the left-right direction along the belt-like body 21, and the food container is accommodated through the torn portion. The sandwich (food) A stored in the space 7 can be taken out and eaten.
[0028]
The bending heat welding portion 11 may be provided so as to sandwich the cut line 81 at the center in the vertical direction of the cut line 81, as shown in FIG. The bending heat-welding portions 11 and 11 are formed by the center portions in the vertical direction of the left and right cut portions 811 and 811 of the cut line 81 and the right and left inclined end edges 12 and 12 of the front and back protruding pieces 8 and 9 facing the center portion. May be provided side by side in a state along the lower heat-welded portion 5b of the bag body 6. In short, the upper end portions of the left and right cut portions 811 and 811 are protruded upward from the upper end of the bending heat welding portions 11 and 11 toward the lower thermal welding portion 5b side of the bag body 6, and only the lower end portion of the knob 10 is provided. It is also possible to adopt a structure in which is bent downward from between the heat welding parts 11 for bending.
[0029]
Further, as shown in FIG. 8 , it is not necessary that the outer ends of the bending heat-welding portions 11 and 11 reach the left and right inclined end edges 12 and 12 of the front and back protruding pieces 8 and 9, respectively. Specifically, the heat welding portions 11 and 11 for bending having a front horizontally long rectangular shape may be provided so as to sandwich the knob 10.
[0030]
As is apparent from the above, when the bent welding portion 11 refracts the front and back protruding pieces 8 and 9 to the back side, the bending protrusion 111 of the bending heat welding portion 11 serves as a fulcrum. , 9 need only be provided in a form that can be refracted.
[0031]
【The invention's effect】
The food packaging bag according to claim 1, wherein the front film and the back film are overlapped to thermally weld both side edges of the front and back films, and a lower portion having a predetermined interval upward from the lower edge of the front and back films. A bag body having an upper end opened by thermal welding over the entire width is formed, and among the projecting pieces of the front and back films projecting downward from the heat welding portion of the lower part of the bag body, the front side projecting piece has an upward U-shape. Alternatively, in a food packaging bag in which a U-shaped cut line is provided and a portion surrounded by the cut line is formed into a pick piece, the front and back protruding pieces are integrated so as to sandwich the pick piece on both sides of the pick piece. together are provided heat seal parts for a pair of left and right bent connected, the inner edge of the heat seal parts for these folding in a state of being continuous with the right and left cut end of the cut line forming the knob piece heat for these bent provided Since at least the lower end of the knob is protruded downward from between the wearing parts, when the front and back protruding pieces are gripped and bent back, the front and back protruding pieces are folded on the front and back films. While it bends uniformly and smoothly until it reaches the heat welding part for bending, the knob formed on the front protruding piece projects the lower end from the lower end between the pair of left and right bending heat welding parts. The lower end portion of the protruding knob is formed with a strong waist due to its vertical length.
[0032]
Further, when the front and back protruding pieces reach the bending heat welding portion, they receive resistance by the rigid bending heat welding portion, and accordingly, the lower end (folding curve) of the bending heat welding portion is applied. As a fulcrum, the entire front and back protruding piece can be largely refracted to the back side. On the other hand, the lower end of the pinch piece with strong waist maintains a straight state without following the bending to the back side of the above-mentioned front and back protruding pieces, and stands up toward the front by smoothly and reliably separating from the front film Thus, the lower end of the raised piece in a standing state can be gripped smoothly and reliably to smoothly open the food packaging bag, and the food stored therein can be taken out and eaten.
[0033]
Furthermore, in the food packaging bag according to claim 1, the pair of left and right bending heat welding portions are formed in a straight heat welding portion parallel to the lower heat welding portion of the bag body. After the front and back protruding pieces are bent toward the back side, the lower end of the knob is separated from the front protruding piece, and is raised and gripped, and then the pulling direction of the knob is smoothly directed toward the lower heat welding portion of the bag body. And it can be determined reliably, and the opening operation | work of the food packaging bag can be performed reliably.
[0034]
The food packaging bag according to claim 2 is the food packaging bag according to claim 1, wherein the upper end portion of the cut line forming the knob is moved from the pair of left and right folding heat welding portions to the bag body. Since it protrudes upward toward the lower heat welding part side, the lower end part of the knob piece protruding downward from the heat welding part for bending is strong and the front and back protruding pieces are on the back side. After bending and gripping the lower end of the knob piece easily and smoothly, the upward pulling direction of the knob piece is changed from the bending heat welding portion of the knob piece to the lower heat of the bag body. The food packaging bag can be opened smoothly and reliably by being guided and regulated by the upper portion protruding upward toward the welded portion.
[Brief description of the drawings]
FIG. 1 is a front view showing a food packaging bag according to the present invention.
FIG. 2 is a longitudinal sectional view showing the food packaging bag of FIG.
3 is a perspective view showing a state where food (sandwich) is stored in a food storage space of the food packaging bag of FIG. 1. FIG.
4 is a vertical cross-sectional view of the main part showing the point when the food packaging bag of FIG. 1 is opened. 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.
FIG. 7 is a front view showing another example of the front and back protruding piece portions of the food packaging bag.
FIG. 8 is a front view showing another example of the front and back protruding piece portions of the food packaging bag.
[Explanation of symbols]
1 Food Packaging Bag 2 Front Film 3 Back Film
5b Lower end heat fusion part 6 Bag body 7 Food storage space part 8 Front side protruding piece
81 Cut line 9 Back side protruding piece
10 Picks
101 Lower end of the knob
11 Folding heat weld
111 Lower end of the heat-welded part for bending (folding curve)

Claims (2)

The top and bottom films are overlapped, and both side edges of these front and back films are heat welded, and the lower end of the front and back films is heat welded over the entire width at a predetermined interval, thereby opening the upper end. Of the front and back film projecting downward from the lower heat-welded portion of the bag body, the front side projecting piece is provided with an upward U-shaped or U-shaped score line. In a food packaging bag formed by forming a portion surrounded by a line into a pick piece, a pair of left and right bending heat welding portions, in which the front and back protruding pieces are integrally connected so as to sandwich the pick piece on both sides of the pick piece, together they are provided parallel to the lower heat welded portion, provided with a inner ends of the folding heat welded portion in a state obtained by continuously to the right and left cut end of the cut line forming the knob piece These folding hot melts Food packaging bag characterized in that it is protruded downward at least the lower end of the knob piece from between the parts. According to claim 1, characterized in that projecting upward toward the lower heat welded portion side of the bag body upper portion of the cut line forming the knob piece from the heat seal parts for a pair of left and right bent Food packaging bags.

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