JP2019081603A - Packaging bag - Google Patents

Abstract

To provide a packaging bag capable of being opened easily and taking out contents easily after being opened.SOLUTION: The packaging bag of the present invention has a front and a back surface, and a first and a second side surface, and has a first opening auxiliary line and a second opening auxiliary line. The first opening auxiliary line extends from a seal portion at one end of the back surface, and is formed at least partially along a boundary between the front surface and the first side surface across a boundary between the back surface and the first side surface, and the second opening auxiliary line extends from a seal portion at one end of the front surface, and is formed at least partially along a boundary between the front surface and the second side surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging bag. In particular, the present invention relates to a packaging bag for storing a PTP (press through package) packaging sheet in which medicines, confectionery and the like are packaged.

  Various types of packaging bags are known as packaging bags composed of films. Above all, gusset type packaging bags are used in various fields because they can be packed in a compact and efficient manner. Although the gusset type packaging bag is generally used to open the side part by tearing off the notch provided at the end as a starting point, in recent years the back or front can be opened, and the contents are taken out Easy-to-use packaging bags are known (Patent Documents 1 and 2).

  However, the above-mentioned gusset type packaging bag in which the back or front is opened may not be easily opened.

JP 2008-105719 A JP 2014-234236 A

  The present invention has been made to solve the above-mentioned conventional problems, and its main object is to provide a packaging bag which can be easily opened and whose contents can be easily taken out after opening. Another object of the present invention is to provide a packaging bag in which the contents are prevented from popping out when opened.

In the packaging bag of the present invention, the front and back facing each other, the first side and the second side facing each other formed between the front and back, and the front and back facing are sealed. A packaging bag having a seal portion formed along each of opposite ends facing each other, and a back seal portion formed on the back surface so as to extend from one end to the other end of the both ends, It has a first opening auxiliary line and a second opening auxiliary line extending from the one end to the other end, which induces a tear so as to form an opening in the front surface when it is torn from the seal portion at one end The first opening auxiliary line extends from the seal portion at the one end of the back surface, straddles the boundary between the back surface and the first side surface, and at least a portion thereof is a boundary between the front surface and the first side surface Formed along with the above 2 unsealing auxiliary line extends from the sealing portion of the front of the one end, at least a part of which is formed along the boundary between the front and a second side.
In one embodiment, the first opening assisting line is directed from a first end point located between the back seal portion and the first side surface at the seal portion at the one end of the back surface toward the other end. Of the first upper end side line portion extending along the boundary between the front surface and the first side face to the seal portion of the other end, and the other of the first upper end side line portion And connecting the end on the end side and the end on the one end of the first lower end side wire portion and having a first inclined line portion straddling the boundary between the back surface and the first side surface; The second opening auxiliary line is a second upper end side line portion extending from a second end point located at a position corresponding to the first end point in the front surface to the other end, the front surface and the second A second lower end side line portion extending to the seal portion at the other end along the boundary with the side surface, and the second upper end Having a second inclined line portion for connecting the above one end side of the end portion of the end portion of the other end and the second lower side line portion of the line portion.
In one embodiment, the first lower end side line portion and the second lower end side line portion extend in directions parallel to each other.
In one embodiment, the first lower end side line portion is formed on the front surface side along the boundary between the front surface and the first side surface.
In one embodiment, the second lower end side line portion is formed on the front surface side along the boundary between the front surface and the second side surface.
In one embodiment, the opening notch is provided only in the seal portion at one end of the seal portion at the one end and the seal portion at the other end.

  According to the present invention, there can be provided a packaging bag which can be easily opened and the contents can be easily removed after opening.

It is a schematic perspective view when the packaging bag by one embodiment of this invention is seen from the front side. It is a schematic plan view when the packaging bag by one embodiment of this invention is seen from the back side. It is a schematic side view when the packaging bag by one embodiment of this invention is seen from the 1st side side. It is a schematic perspective view when the state after opening of the packaging bag by one embodiment of this invention is seen from the front side.

  Hereinafter, embodiments of the present invention will be described in detail based on FIGS. 1 to 4.

  FIG. 1 is a schematic perspective view of the packaging bag 100 according to one embodiment of the present invention as viewed from the front face 20, and FIG. 2 is a view of the packaging bag 100 according to one embodiment of the present invention from the back 21 side. FIG. 3 is a schematic perspective view of when and FIG. 3 is a schematic side view of the packaging bag 100 according to one embodiment of the present invention as viewed from the first side 22 side. The packaging bag 100 has a front surface 20 and a back surface 21 facing each other, and a first side surface 22 and a second side surface 23 formed between the front surface 20 and the back surface 21 and facing each other. The packaging bag 100 is a so-called gusset packaging bag. In the following, for the sake of explanation, the boundary between the front surface 20 and the first side surface 22 is taken as the boundary 22a, the boundary between the back surface 21 and the first side surface 22 is taken as the boundary 22b, and the boundary between the front surface 20 and the second side surface 23 The boundary between the back surface 21 and the second side surface 23 is taken as the boundary 23 b.

  The packaging bag 100 includes a first seal portion 11 and a second seal portion 12 formed by sealing the front surface 20 and the back surface 21 and a back seal portion 13 (back attachment) formed on the back surface. Have. The first seal portion 11 is formed along one end 11 a of the both ends facing each other, and the second seal portion 12 is formed along the other end 12 a. The back seal portion 13 is formed on the back surface 21 so as to extend from the one end 11 a to the other end 12 a. Typically, the back seal portion 13 is formed in the vicinity of the center of the back surface 21 and is folded toward the second side surface 23 so as to be in contact with the back surface 21 (substantially parallel to the back surface 21).

  The packaging bag 100 has a first opening auxiliary line 30 and a second opening auxiliary line 40 extending from one end 11a to the other end 12a. The first opening auxiliary line 30 and the second opening auxiliary line 40 induce a tear so as to form an opening in the front surface 20 when the packaging bag 100 is torn from the first seal portion 11. Typically, the first opening aid line 30 and the second opening aid line 40 can advance a tear along its shape. The first opening auxiliary line 30 extends from the first seal portion 11 of the back surface 21 and is formed at least partially along the boundary 22a across the boundary 22b. The second opening assisting line 40 extends from the first seal portion 11 of the front surface 20, and at least a part thereof is formed along the boundary 23a.

  The first opening auxiliary line 30 and the second opening auxiliary line 40 may be constituted by any appropriate number of opening auxiliary lines extending in directions parallel to each other. Preferably, the first opening auxiliary line 30 and the second opening auxiliary line 40 are respectively constituted by a plurality of opening auxiliary lines. In this case, the interval between adjacent opening assisting lines is not particularly limited, and can be appropriately set according to the size of the packaging bag 100. In the illustrated example, the first opening auxiliary line 30 and the second opening auxiliary line 40 are respectively configured by three opening auxiliary lines extending in directions parallel to each other. In the drawing, for the purpose of explanation, the opening auxiliary line 30a, the opening auxiliary line 30b, and the opening auxiliary line 30c are sequentially arranged from the first side 22 side in the front surface 20 as the opening auxiliary line constituting the first opening auxiliary line 30. As shown in the figure, as an opening auxiliary line forming the opening auxiliary line 40, the opening auxiliary line 40a, the opening auxiliary line 40b, and the opening auxiliary line 40c are illustrated sequentially from the second side surface 23 side. By the first opening auxiliary line 30 (second opening auxiliary line 40) being constituted by three opening auxiliary lines as in the illustrated example, for example, the opening auxiliary line 30c (opening auxiliary line 40c) at the time of opening Even if the crevice progressing along the road is derailed by the interference of the contents etc., it is guided by the other opening auxiliary line 30b (opening auxiliary line 40b) and the opening auxiliary line 30a (opening auxiliary line 40a) You can fix it.

  The first opening auxiliary line 30 representatively includes the first upper end side line portion 31, the first inclined line portion 32, and the first lower end side line portion 33. The first upper end side line portion 31 is a portion extending from the first end point 30 d between the back seal portion 13 and the first side surface 22 in the first seal portion 11 of the back surface 21 to the other end 12 a is there. The first lower end side line portion 33 is a portion extending along the boundary 22 a to the second seal portion 12. The first inclined line portion 32 connects the end on the other end 12 a side of the first upper end side line portion 31 and the end on the one end 11 a side of the first lower end side line portion 33 and straddles the boundary 22 b is there. The second opening auxiliary line 40 typically includes a second upper end side line portion 41, a second inclined line portion 42, and a second lower end side line portion 43. The second upper end side line portion 41 is directed from the second end point 40d at the position corresponding to the first end point 30d on the front face 20 (typically, opposite to the first end point 30d) to the other end 12a. Is an extending part. The second lower end side line portion 43 is a portion extending along the boundary 23 a to the second seal portion 12. The second inclined line portion 42 is a portion that connects the end on the other end 12 a side of the second upper end side line portion 41 and the end on the one end 11 a side of the second lower end side line portion 43. Typically, the first lower end side line portion 33 and the second lower end side line portion 43 extend in directions parallel to each other. The length of the first upper end side line portion 31, the first inclined line portion 32, the first lower end side line portion 33, the second upper end side line portion 41, the second inclined line portion 42, and the second lower end side line portion 43 The length may be set to any suitable length depending on the size and use of the packaging bag 100. Although the case where the 1st opening assistance line 30 and the 2nd opening assistance line 40 are straight lines is illustrated in Drawing 1-3 as an example, the 1st opening assistance line 30 and the 2nd opening assistance are illustrated. The shape of the line 40 is not limited to the linear shape. At least at least a first upper end side line portion 31, a first inclined line portion 32, a first lower end side line portion 33, a second upper end side line portion 41, a second inclined line portion 42, and a second lower end side portion 43 One of the shapes may be another shape such as a broken line, a dotted line, or a wavy line.

  FIG. 4 is a schematic perspective view of the opened state of the packaging bag 100 according to one embodiment of the present invention as viewed from the front face 20 side. By tearing the packaging bag 100 from the first end point 30d and the second end point 40d of the first seal portion 11, a tear is induced by the first opening auxiliary line 30 and the second opening auxiliary line 40, and the front surface is A portion of 20 may be removed so that an opening 50 may be formed in the front surface 20 as shown in FIG. Thereby, the contents 60 can be taken out from the opening 50.

  Although the packaging bag of the patent documents 1 and 2 mentioned above can open the back or the front, either may not be able to be opened easily easily. Specifically, the packaging bag of Patent Document 1 has two score lines sandwiching the spine attachment portion (back seal portion), and the spine attachment is started from the notch provided in the spine attachment portion Although a part of the back surface is opened by tearing the part, a troublesome procedure of grasping the back attachment part folded in contact with the back surface is required. In the packaging bag of Patent Document 2, the front film is torn at the end where the front film and the back film are sealed, with the two cuts provided only in the front film as a starting point. However, it takes a troublesome procedure of grasping only the front side film from the state where the back side film and the front side film overlap at the end. On the other hand, in the packaging bag 100, the opening 50 can be formed on the front surface 20 by an easy and general opening procedure of tearing off the end 11a (the first seal portion 11), and the contents 60 can be easily taken out.

  As shown in FIG. 4, in the packaging bag 100 after opening, a part of the front surface 20 is not removed between the cut formed along the second inclined line portion 42 and the first seal portion 11. Remain in As a result, the contents 60 can be prevented from jumping out of the packaging bag 100 at the moment of opening.

  The first lower end side line portion 33 may be formed in the vicinity of the boundary 22a along the boundary 22a, may be formed on the front surface 20 side, or may be formed on the first side surface 22 side. Good. The second lower end side line portion 43 may be formed in the vicinity of the boundary 23a along the boundary 23a, may be formed on the front surface 20 side, or may be formed on the second side surface 23 side. Good. The distance between the boundary 22a and the first lower end side line portion 33 and the distance between the boundary 23a and the second lower end side line portion 43 are, for example, the width of the front face 20 (the distance between facing side surfaces) It may be 1/50 to 1/5, preferably 1/50 to 1/20 of the width of the front face 20. In one embodiment, as shown in FIG. 1, the first lower end side line portion 33 is formed on the front surface 20 side along the boundary 22a, and the second lower end side line portion 43 is formed on the front surface 20 along the boundary 23a. It is formed on the side. That is, the first lower end side line portion 33 is formed in the vicinity of the boundary 22 a in the front surface 20, and the second lower end side line portion 43 is formed in the vicinity of the boundary 23 a in the front surface 20. As a result, part of the front surface 20 remains unremoved along the boundaries 22a and 23a, and the contents 60 can be prevented from jumping out of the packaging bag 100 by the force at the time of opening.

  Preferably, only the first seal portion 11 of the first seal portion 11 and the second seal portion 12 is provided with a cutout for opening. This can prevent accidental tearing of the second seal 12. In one embodiment, the opening notch is a serrated or corrugated shape formed at the end of the first seal portion 11. In another embodiment, the opening notch is formed in the first end 30d and the second end 40d of the first seal portion 11, and any suitable shape such as a letter V or a letter I It is a cut of

  The packaging bag 100 of the illustrated example can be typically obtained by folding one sheet of film into a bag and sealing the end in a state where the films are stacked. Specifically, a set of sides of the rectangular film is overlapped and sealed to form the back seal portion 13, and one side of two sides of the film orthogonal to the set of sides is sealed. The packaging bag 100 can be obtained by setting it as the seal part 11 of 1, and setting it as the 2nd seal part 12 by sealing the other side.

  The film typically has a base film which is the outermost layer of the film, and a functional layer laminated on the base film according to the application. As a base film, resin films, such as polyester type, polyamide type, polypropylene type, polycarbonate type, and cellophane, can be used. Preferably, a stretched film obtained by biaxially stretching these resin films is used.

  The functional layer includes, for example, a barrier layer and a fusion layer. The barrier layer is formed by, for example, vapor depositing an inorganic substance such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, and zirconium oxide on the base film, or bonding a metal foil such as aluminum to the base film Can be formed by By using a film having the above-mentioned barrier layer as a film constituting a packaging bag, gas barrier properties, water vapor barrier properties, mechanical strength, bending resistance, puncture resistance, impact resistance, abrasion resistance, cold resistance, The heat resistance, the chemical resistance, the light shielding property and the like can be improved to prevent the deterioration of the contents. The fusion layer is, for example, high pressure low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene- Representative of acrylic acid copolymer, ethylene-acrylic acid ester copolymer, ethylene-methacrylic acid copolymer (EMMA), ethylene-vinyl alcohol copolymer (EVOH), polyacrylonitrile (PAN), polyethylene terephthalate (PET) It can be formed by applying a resin material such as polyester, or bonding and laminating resin films made of these resin materials. By providing such a fusion layer as the innermost layer, the end of the film can be sealed by heat sealing.

  The first opening auxiliary line 30 and the second opening auxiliary line 40 may be portions thinner than the other portions of the film. Such an opening auxiliary line is typically formed by half-cutting a film by laser irradiation (for example, carbon dioxide gas laser irradiation).

  The packaging bag of the present invention is suitably used as a packaging bag for containing a PTP packaging sheet in which pharmaceuticals, confectionery and the like are packaged.

11 first seal portion 12 second seal portion 13 back seal portion 20 front surface 21 back surface 22 first side surface 23 second side surface 30 first opening auxiliary line 31 first upper end side line portion 32 first inclined line Part 33 first lower end side wire portion 40 second opening auxiliary wire 41 second upper end side wire portion 42 second inclined line portion 43 second lower end side wire portion 100 packaging bag

Claims (6)

Front and back surfaces facing each other; first and second side surfaces formed between the front and back surfaces and facing each other;
A seal portion formed along each of both ends facing each other by sealing the front surface and the back surface; and a back seal portion formed on the back surface so as to extend from one end to the other end of the both ends;
A packaging bag having
There is a first opening auxiliary line and a second opening auxiliary line extending from the one end to the other end, which induces a tear so as to form an opening in the front surface when being cut from the seal portion at one end And
The first opening auxiliary line extends from the seal portion at the one end of the back surface, straddles the boundary between the back surface and the first side surface, and at least a portion is at the boundary between the front surface and the first side surface. Formed along
The packaging bag according to claim 1, wherein the second opening assisting line extends from the seal portion at the one end of the front surface, and at least a part of which is formed along the boundary between the front surface and the second side surface. The first opening auxiliary line is a first upper end side line extending from a first end point located between the back seal portion and the first side surface at the seal portion at the one end of the back surface toward the other end Section, a first lower end side line extending along the boundary between the front surface and the first side to the seal at the other end, an end on the other end of the first upper end side line, and And a first inclined line connecting the end of the first lower side line with the end of the one end and straddling the boundary between the back surface and the first side surface;
The second opening auxiliary line includes a second upper end side line portion extending from a second end point located at a position corresponding to the first end point in the front surface to the other end, the front surface and the second A second lower end line extending to the seal portion at the other end along the boundary with the side, an end of the other end of the second upper end line, and the one end of the second lower end line The packaging bag according to claim 1, further comprising: a second inclined line portion connecting the end portion of the container.   The packaging bag according to claim 2, wherein the first lower end side line portion and the second lower end side line portion extend in directions parallel to each other.   The packaging bag according to claim 2 or 3, wherein the first lower end side line portion is formed on the front side along a boundary between the front side and the first side surface.   The packaging bag according to any one of claims 2 to 4, wherein the second lower end side line portion is formed on the front surface side along a boundary between the front surface and the second side surface.   The packaging bag according to any one of claims 1 to 5, wherein the opening notch is provided only in the seal portion at one end of the seal portion at the one end and the seal portion at the other end.

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