JP5845583B2 - Packaging bag - Google Patents

Description

  The present invention relates to a packaging bag.

  Conventionally, a packaging bag is a pillow bag or a gusset bag in which a confectionery, a food, or a seasoning is easily accommodated, a single film is formed into a cylindrical shape, and ends are overlapped to provide a back seal portion. Fold one film, three-side sealed bag sealed on three sides, two-sided four-side sealed bag overlaid with two films, or tape folded on the bottom to accommodate toiletries such as refill detergents There is a standing pouch inserted, and it is widely used.

  These pillow bags, gusset bags, three-side seal bags, four-side seal bags, and packaging bags such as standing pouches, when opened, have a predetermined position to be opened such as a back seal portion or a side seal portion, such as a top seal. There is a packaging bag that can be easily opened with a V notch, U notch, turtle notch, I notch or the like carved at a position corresponding to a portion slightly below the portion as an opening start end.

  In addition, a weak line such as a perforation is provided on the planned opening line. In addition, there are also ones in which a large number of perforations are provided in a side seal portion or the like of a packaging bag so that it can be easily opened from any end of the seal portion provided with a large number of perforations.

  However, even with a packaging bag having the conventional easy-opening means as described above, when opening, the bag may move and the contents may scatter due to its momentum.

  On the other hand, as a packaging bag that can classify and store products with different appearances and easily recognize the appearance of each of the classified products, folds are formed along the lateral direction, and the stored items are inserted by folding. There is a packaging (for) bag in which an insertion holding portion for holding is formed (Patent Document 1).

  Known documents are shown below.

JP-A-11-321880

  As described above, in the packaging bag having the conventional easy-opening means, when opening, the packaging bag may move due to the momentum, and the contents may be scattered. Moreover, although the insertion holding | maintenance part formed by folding is provided in the packaging (for) bag described in patent document 1, since the distance of the opening expected opening line and the content does not change, It cannot prevent splashing.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a packaging bag in which contents are not spilled or scattered when opened.

The invention according to claim 1 of the present invention is a packaging bag provided with a back seal part, a top seal part and a ground seal part,
Between the top seal part and the ground seal part, a folding part is provided by a mountain fold line and a valley fold line that wraps around the packaging bag in parallel with the top seal part, and a part to be opened between the fold part and the top seal part Provided ,
The packaging bag is characterized in that the double length of the distance between the mountain fold line and the valley fold line is longer than the distance from the top seal part to the lower end of the opening planned part .

  The packaging bag of the present invention is configured as described above, and since the folded portion is provided by the mountain folded portion and the valley folded portion that go around the packaging bag in parallel with the top seal portion, the packaging bag is removed from the planned opening portion. When opening, the folded portion is extended and flattened, so that the content filled in the packaging bag is not separated from the planned opening portion, and the content is not spilled or scattered by opening.

  The packaging bag of the present invention has a length twice as long as the distance between the mountain fold and the valley fold, which is longer than the length from the top seal portion to the lower end of the opening scheduled portion, so when the fold portion is extended and flattened, The filled contents are sufficiently separated from the planned opening portion, and the contents can be reliably prevented from being spilled or scattered by opening.

The invention according to claim 2 of the present invention is the packaging bag according to claim 1, wherein the valley fold line of the folding part is closer to the top seal part side than the mountain fold line.

  In the packaging bag of the present invention, since the valley fold portion of the folding portion is closer to the top seal portion side than the mountain folding portion, when the folding portion is extended and flattened, the contents do not move to the opening scheduled portion side, and the packaging bag is opened. Can further prevent the contents from spilling or scattering.

The invention according to claim 3 of the present invention is the packaging bag according to claim 1 or 2 , wherein the scheduled opening portion is provided by a weakening line.

  In the packaging bag of the present invention, since the opening portion is provided by the weakening line, it can be easily cut and opened from the opening portion.

The invention according to claim 4 of the present invention is the packaging bag according to claim 1 or 2 , wherein the planned opening portion is provided by at least two weakening lines.

  In the packaging bag of the present invention, since the opening portion is provided by at least two weakening lines, the opening portion can be easily cut into a strip shape, and the opening portion can be easily opened. it can.

In the packaging bag of the present invention, further weakened line is, if the surface of the packaging bag is a groove which is engraved by the laser processing, when creating a packaging bag, can be provided easily weakened line at an arbitrary position And the weakening line can be easily cut to open the planned opening portion.

The invention according to claim 5 of the present invention, the intersecting a line of weakness, the packaging according to claim 3 or 4, characterized in that a notch towards the unsealed portion to the position of the end of the back seal portion It is a bag.

  The packaging bag of the present invention is further provided with a notch toward the unsealed portion at the position of the end of the back seal portion that intersects the weakening line, so that the weakening line can be easily cut using the notch as a trigger. .

  The packaging bag of the present invention can store the contents sealed before opening, and the contents do not spill or scatter when opened.

(A) It is explanatory drawing which showed typically 1st Embodiment of the packaging bag of this invention with the plane. (B) It is explanatory drawing to which the cross section in the XX line of FIG. 1 (A) was expanded. (A) It is explanatory drawing which showed typically the state which extended the folding part before opening 1st Embodiment of the packaging bag of this invention. (B) It is explanatory drawing which showed typically the state which cut the opening scheduled part of 1st Embodiment of the packaging bag of this invention with the plane. It is explanatory drawing which showed typically 2nd Embodiment of the packaging bag of this invention by the perspective view. It is explanatory drawing which showed typically the state which opened the scheduled opening part of 2nd Embodiment of the packaging bag of this invention in strip shape in the perspective view.

<First Embodiment>
Hereinafter, a first embodiment for carrying out the present invention will be described.
FIG. 1A is an explanatory diagram schematically showing a first embodiment of a packaging bag of the present invention in a plan view. (B) is explanatory drawing to which the cross section in the XX line of FIG. 1 (A) was expanded.

  The packaging bag 100 of 1st Embodiment rolls up the film of 1 sheet like FIG.1 (A), (B), seals the both end surfaces which overlap, and provides the back seal part 1, It is a packaging bag in which the top seal part 2 and the ground seal part 3 are provided by overlapping and sealing so as to crush the openings at both ends of the cylindrical film.

  Between the top seal portion 2 and the ground seal portion 3, a fold portion 4 is provided by a mountain fold line 41 and a valley fold line 42 that wrap around the packaging bag 100 in parallel with the top seal portion 2, and between the fold portion 4 and the top seal portion 2. Is provided with a scheduled opening portion 5.

  In the folding part 4, the mountain fold line 41 that goes around the packaging bag 100 in parallel with the top seal part 2 is on the outside, and the valley fold line 42 that goes around the packaging bag 100 in parallel with the top seal part 2 goes inwardly from the mountain fold line 41. Is formed. In the present embodiment, a valley fold line 42 and a mountain fold line 41 are formed from the side closer to the top seal portion 2 side. Thus, when opening, the valley fold line 42 and the mountain fold line 41 are extended flat, and when the folding part 4 is extended and flattened, the contents do not move to the opening expected part 5 side, and the contents are opened by opening. It is possible to further prevent spilling and scattering.

  The planned opening portion 5 is provided by two weakening lines 51 and 52. The weakening lines 51 and 52 are for tearing and opening the packaging bag, as long as the packaging bag is easily cut. For example, a linear groove can be engraved on the surface of the packaging bag. This linear groove may be a half-cut line formed by using a punching blade, but in this embodiment, it is provided by laser processing.

In the laser processing, a part of the layer of the packaging material constituting the packaging bag is evaporated and removed by irradiating the laser beam. Further, the weakening lines 51 and 52 may be provided as a continuous line, or may be provided as a broken line or a perforation. In addition, the weakening lines 51 and 52 may not be provided in the scheduled opening portion 5, but may be left unprocessed. Moreover, you may make it the opening scheduled part 5 cut easily using the packaging material which is easy to cut the opening scheduled part 5 in the circumferential direction of a packaging bag for the broadcast bag 100. FIG.

  Further, by providing the opening-scheduled portion 5 with the two weakening lines 51, 52, the opening-scheduled portion 5 can be cut into a strip shape, so that the weakening lines 51, 52 are easily cut and easily opened. With one, the back seal portion 1 above the planned opening portion 5 is held, and the portion above the planned opening portion 5 is cut diagonally upward, so that the packaging bag is inclined obliquely and the contents are easily spilled. In addition, an extra force is required to cut off, and it may be difficult to open.

  In addition, when the opening-scheduled portion 5 is provided by the two weakening lines 51, 52, at the base of the back seal portion 1 on the side where the back seal portion 1 is folded and between the two weakening lines 51, 52. Scratch processing and vertical weakening lines should be provided. If the back seal part 1 between the two weakening lines 51 and 52 is pulled and pulled, the packaging bag is cut at the base of the back seal part 1 on the side where the back seal part 1 is knocked down, and the back seal part 1 is brought down. By pulling in the direction opposite to the side, the two weakening lines 51 and 52 can be torn, and opening is facilitated.

  The length 2b which is twice the distance b between the mountain fold line 41 and the valley fold line 42, that is, the length that the packaging bag becomes long when the valley fold line 42 and the mountain fold line 41 are extended flat and the folding part 4 is extended and flattened. The length 2b is longer than the length of the distance a from the top seal portion 4 to the weakening line 52 which is the lower end of the planned opening portion 5.

  By doing so, when the folding part 4 is extended and flattened, the filled contents are sufficiently separated from the opening-scheduled part 5 and the contents are surely prevented from spilling or scattering by opening. be able to.

  Notches 61 and 62 that cross the two weakening lines 51 and 52 toward the unsealed part are provided at the end positions of the back seal part 1, and the weakening line 51 is easily triggered by the notches 61 and 62. , 52 can be torn.

  FIG. 2 (A) is an explanatory view schematically showing a state in which the folding portion is extended before opening the first embodiment of the packaging bag of the present invention. (B) is explanatory drawing which showed typically the state which cut the opening scheduled part of 1st Embodiment of the packaging bag of this invention with the plane.

  When opening the packaging bag 100, hold the top and bottom of the folding portion 4 of the packaging bag 100, pull the ceiling seal portion 2 up, the ground seal portion 3 down, and pull away so that the valley fold line 42. When the mountain fold line 41 is extended flat and the folding part 4 is extended and flattened, the distance between the top seal part 2 and the ground seal part 3 is increased, and the length of the bag becomes longer as shown in FIG. The distance between the planned opening portion 5 and the ground seal portion 3 is increased, the content remains on the ground seal 3 side, and the distance between the top seal portion 2 and the content and between the planned opening portion 5 and the content is increased. .

  With the back seal portion 1 between the two notches 61 and 62 of the packaging bag 100 in this state, the back seal 1 is pulled in the direction opposite to the direction in which the back seal 1 is tilted, and the two notches 61 and 62 are used as a trigger to weaken the two. The lines 51 and 52 are torn. At this time, if a scratch or vertical weakening line is provided between the two weakening lines 51 and 52 at the base of the back sealing part 1 on the side where the back sealing part 1 is tilted, the back sealing part 1 The packaging bag is cut at the root of the back seal portion 1 on the side where the back seal is tilted, and the two weakening lines 51 and 52 can be torn in the opposite direction to the side where the back seal portion 1 is tilted.

In this way, when the packaging bag 100 is opened, as shown in FIG. 2 (B), the unscheduled opening part 5 is cut into a strip shape, the part on the top seal part 2 side from the unscheduled opening part 5 and below the unscheduled opening part 5 It is divided into the parts where the contents are stored.

  As described above, when opening the packaging bag 100, the folding portion 4 is extended and flattened, the contents remain on the ground seal 3 side, and the distance between the planned opening portion 5 and the contents becomes longer, so the opening is scheduled. Even if the portion 5 is cut and opened, the contents are not spilled or scattered.

<Second Embodiment>
Hereinafter, a second embodiment for carrying out the present invention will be described.
FIG. 3 is an explanatory view schematically showing a second embodiment of the packaging bag of the present invention in a perspective view.
FIG. 4 is an explanatory diagram schematically showing a perspective view of a state in which the unscheduled opening portion of the second embodiment of the packaging bag of the present invention is cut into a strip shape.

  The packaging bag 200 of 2nd Embodiment rolls up the film of 1 sheet like FIG. 2 (A), seals the both end surfaces which overlap, provides the back seal part 1, and is a cylindrical film. Folded in two places so that the longitudinal direction of the tube is opposed to the inside, two side gusset portions 7 and 7 are provided, and the top seal portion 2 is further overlapped and sealed so as to crush the openings at both ends. And a side gusset type packaging bag provided with a ground seal portion 3.

  Between the top seal part 2 and the ground seal part 3, a folding part 4 is provided by a mountain fold line 41 and a valley fold line 42 that wrap around the packaging bag 200 in parallel with the top seal part 2, and between the folding part 4 and the top seal part 2. Is provided with a scheduled opening portion 5.

  In the folding part 4, the mountain fold line 41 that goes around the packaging bag 100 in parallel with the top seal part 2 is on the outside, and the valley fold line 42 that goes around the packaging bag 100 in parallel with the top seal part 2 goes inwardly from the mountain fold line 41. Is formed. As a result, when opening, the valley fold line 42 and the mountain fold line 41 are flattened, and the contents are spilled when the fold-out part 4 is extended and flattened away from the planned opening part 5 and opened. There is no splashing. In the present embodiment, a mountain fold line 41 and a valley fold line 42 are formed from the side closer to the top seal portion 2 side.

  The planned opening portion 5 is provided by two weakening lines 51 and 52. The weakening lines 51 and 52 are for tearing and opening the packaging bag, as long as the packaging bag is easily cut. For example, a linear groove can be engraved on the surface of the packaging bag. The linear groove may be a half-cut line using a blade, but is provided by laser processing in the present embodiment.

  In the laser processing, a part of the layer of the packaging material constituting the packaging bag 200 is evaporated and removed by irradiating a laser beam. The weakening lines 51 and 52 may be provided as continuous lines, or may be provided in broken lines or perforations. In addition, the weakening lines 51 and 52 may not be provided in the scheduled opening portion 5, but may be left unprocessed. Moreover, you may make it the opening scheduled part 5 cut easily using the packaging material which is easy to cut in the circumferential direction of a packaging bag.

  Also, by providing the planned opening portion 5 with the two weakening lines 51 and 52, the planned opening portion 5 can be cut into a strip shape, so that the weakening lines 51 and 52 are easy to cut. With one, the back seal portion 1 above the planned opening portion 5 is held, and the portion above the planned opening portion 5 is cut diagonally upward, so that the packaging bag is inclined obliquely and the contents are easily spilled. In addition, an extra force is required to cut off, and it may be difficult to open.

In addition, when the planned opening portion 5 is provided by the two weakening lines 51 and 52, there is a scratch between the two weakening lines 51 and 52 at the root of the back seal part 1 on the side where the back seal part 1 is tilted. It is advisable to provide processing and vertical weakening lines. If the back seal part 1 between the two weakening lines 51 and 52 is pulled and pulled, the packaging bag is cut at the base of the back seal part 1 on the side where the back seal part 1 is knocked down, and the back seal part 1 is brought down. By pulling in the direction opposite to the side, the two weakening lines 51 and 52 can be torn, and opening is facilitated.

  The length 2b which is twice the distance b between the mountain fold line 41 and the valley fold line 42, that is, the length that the packaging bag becomes long when the valley fold line 42 and the mountain fold line 41 are extended flat and the folding part 4 is extended and flattened. The length 2b is longer than the length of the distance a from the top seal portion 4 to the weakening line 52 which is the lower end of the planned opening portion 5.

  By doing so, when the folding part 4 is extended and flattened, the filled contents are sufficiently separated from the opening-scheduled part 5 and the contents are surely prevented from spilling or scattering by opening. be able to.

  Notches 61 and 62 that cross the two weakening lines 51 and 52 toward the unsealed part are provided at the end positions of the back seal part 1, and the weakening line 51 is easily triggered by the notches 61 and 62. , 52 can be torn.

  When opening the packaging bag 200, hold the upper and lower portions of the folding portion 4 of the packaging bag 200, pull the ceiling seal portion 2 up, the ground seal portion 3 down, and pull away. When the folding line 42 and the mountain folding line 41 are extended flat, and the folding part 4 is extended and flattened, the distance between the top sealing part 2 and the ground sealing part 3 is increased, and the length of the bag becomes longer as shown in FIG. The content remains on the ground seal 3 side, and the distance between the top seal portion 2 and the content and between the planned opening portion 5 and the content becomes long.

  With the back seal portion 1 between the two notches 61 and 62 of the packaging bag 200 in this state, the back seal 1 is pulled in the opposite direction to tear the two weakening lines 51 and 52. At this time, if a scratch or vertical weakening line is provided between the two weakening lines 51 and 52 at the base of the back sealing part 1 on the side where the back sealing part 1 is tilted, the back sealing part 1 The packaging bag is cut at the root of the back seal portion 1 on the side where the back seal is tilted, and the two weakening lines 51 and 52 can be torn in the opposite direction to the side where the back seal portion 1 is tilted.

  In this way, when the packaging bag 200 is opened, as shown in FIG. 4, the unscheduled portion 5 is cut into a strip shape, the portion on the top seal portion 2 side from the unscheduled portion 5 and the contents below the unscheduled portion 5 Is divided into the parts that are stored.

  As described above, when opening the packaging bag 200, if the folding portion 4 is extended and flattened, the contents remain on the ground seal 3 side, and the distance between the planned opening portion 5 and the contents becomes longer, so the opening is scheduled. Even if the portion 5 is cut and opened, the contents are not spilled or scattered.

  The film of the packaging material constituting the packaging bags 100 and 200 of the present invention may be a single film of a heat-melting plastic such as polyethylene or polypropylene, but a laminated film composed of a base material layer and a sealant layer is preferably used. .

  As the substrate layer, a plastic film is mainly used. Examples of plastic films to be used include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polybutylene terephthalate and polyethylene naphthalate, polyamides such as nylon-6, nylon-66 and MXD nylon, and copolymers thereof. The film can be used in a uniaxially stretched, biaxially stretched or unstretched film.

To these plastic films, additives such as known plasticizers, antioxidants, lubricants, antistatic agents and ultraviolet absorbers can be added as necessary.

  These plastic films can be used as a base layer in a single layer or in a multilayer in which these are combined. Furthermore, it is good also considering what laminated | stacked aluminum foil and paper on these plastic films as a multilayer as a base material layer. Moreover, you may use the plastic film which provided the inorganic oxide vapor deposition layer or the aluminum vapor deposition layer.

  It is preferable that the base material layer is provided with at least one plastic film having directivity for easy cutting. Examples of the plastic film having directivity for easy cutting include a uniaxially stretched plastic film and a biaxially stretched plastic film in which the stretch ratios are stretched differently in length and width.

  By making a bag in accordance with the direction in which the plastic film is easily cut in accordance with the longitudinal direction of the top seal portion 1, the plastic film can be easily torn without providing the weakening lines 51 and 52 in the planned opening portion 5.

  For the sealant layer, a heat-meltable plastic such as polyethylene, polypropylene, ethylene copolymer, and saturated polyester can be used. This sealant layer can be laminated on the base material layer to form a laminated film, and a packaging material film constituting the packaging bags 100 and 200 can be obtained.

  In the packaging bags 100 and 200 according to the embodiment, the notches 61 and 62 are provided with V notches or I notches, but it is possible to use a U notch, a turtle notch or the like. Further, a large number of fine scratches and perforations may be provided in the seal portion, and it is only necessary to trigger the weakening lines 51 and 52.

  In addition, in the packaging bags 100 and 200 of the embodiment, the back seal portion 1 is provided by a palm attachment, but may be provided by an envelope attachment. In this case, the front and back of the film of the packaging material can be sealed with each other, for example, are made of a similar heat-melting resin, and the back seal portion 1 has the back surface of one end of the film on the surface of the other end Stack and seal so that they touch. When the envelope is attached in this manner, the number of films overlapped at the folding portion 4 of the back seal portion 1 is reduced, and it is possible to prevent this portion from becoming extremely thick.

  Further, when the back seal portion 1 is provided by applying an envelope, the notches 61 and 62 are provided only on the film on the surface side of the back seal portion 1. If an unsealed portion is provided at the end of the back seal portion 1 between the notches 61 and 62, the actual seal portion between the notches 61 and 62 can be picked and pulled when opening. Can be opened easily.

  And in the case of the back seal part 1 between the notches 61 and 62 of the film on the lower side of the surface in the back seal part 1, it is on the front side if it is easily cut by providing scratches or weakening lines. When the notches 61 and 62 of the film are pulled, the film below the surface is cut and the two weakening lines 51 and 52 can be torn.

DESCRIPTION OF SYMBOLS 100, 200 ... Packaging bag 1 ... Back seal part 2 ... Top seal part 3 ... Ground seal part 4 ... Folding part 41 ... Mountain fold line 42 ... Valley fold line 5 ...・ Scheduled opening parts 51, 52 ... Weak lines 61, 62 ... Notches 7, 7 ... Side gusset parts a, b ... Distance

Claims (5)

A packaging bag provided with a back seal part, a top seal part and a ground seal part,
Between the top seal part and the ground seal part, a folding part is provided by a mountain fold line and a valley fold line that wraps around the packaging bag in parallel with the top seal part, and a part to be opened between the fold part and the top seal part Provided,
A packaging bag, wherein a double length of a distance between the mountain fold line and the valley fold line is longer than a distance from the top seal part to a lower end of the opening planned part.   The packaging bag according to claim 1, wherein the valley fold line of the fold-in part is closer to the top seal part than the mountain fold line.   The packaging bag according to claim 1, wherein the opening portion is provided by a weakening line.   The packaging bag according to claim 1 or 2, wherein the opening portion is provided by at least two weakening lines. The packaging bag according to claim 3 or 4 , wherein a notch toward the unsealed part is provided at a position of an end of the back seal part that intersects the weakening line.

Images