JP2007069971A - Easy opening soft packaging bag - Google Patents

Abstract

The present invention relates to a front packaging film and a rear film of an unsealing portion by making a tear line between the front film and the rear film of the unsealing portion after the flat packaging bag is torn and opened along the cutting line for unsealing. An easily openable soft packaging bag that can be easily separated from the opening and easily opened the opening portion.
SOLUTION: A flexible sealing bag made by forming a heat-sealing part around a plastic film material 1, 2 that is folded in two or two-ply, along a cutting line C inside the heat-sealing part at one end of the flexible packaging bag. In an easily openable flexible packaging bag that can be easily cut and opened, straight cut by a stretched film stretched in the tearing and opening direction on the outer surface or inner surface of one of the laminated plastic film materials 1 and 2 The tearable film material 8 was laminated and adhered.
[Selection] Figure 1

Description

  The present invention relates to an easily openable soft packaging bag that is easy to tear open in a soft packaging bag made of a soft packaging film.

  In general, as a packaging bag (pouch) that is made of a soft packaging film material, either a side end portion or an upper and lower end portion of a rectangular flexible packaging film material that is folded in two or overlapped and stacked. A top seal part, both side seal parts so as to surround the contents storage part which is heat-sealed around the three sides of either one of the two sides of the one end or both sides and the upper and lower ends. There is a flat packaging bag with a bottom seal.

  In addition, a bottom folded film having a fold in a direction perpendicular to both end portions of the soft packaging film material is formed on the inner surface of the lower end portion of the rectangular flexible packaging film material that is overlapped by two sheets. The open end of the bottom film is folded in half around the three sides of both ends and upper and lower ends of the flexible packaging film material, with the open end of the film being the lower end. Standing packaging with a top seal part, both side seal parts, and a self-supporting bottom seal part that is opened by folding the bottom film so as to surround the contents container that has been heat sealed so as not to be heat sealed. There is a bag.

  The packaging bag of such a form is composed of two front and rear soft packaging film materials ranging from a heat-sealed peripheral seal part to a packaging storage part that packages the contents inside the peripheral seal part. Therefore, in the peripheral seal part, only by providing a notch part for cutting and opening on a part of the side seal part on one side or the side seal part on the side close to the top seal part on both sides, When opening, two film materials are cut from the cut portion in a direction parallel to the top seal portion along the cutting line, so that the bag can be opened easily and is an easily openable packaging bag. .

  In addition, such an easy-open packaging bag can be re-sealed in parallel to the cutting line inside the bag from the cutting line parallel to the top seal portion so that it can be sealed again after being opened by tearing. Some have a tape-like zipper.

  By the way, the two film materials of the front film and the rear film of the folded film which are folded in two or overlapped to constitute such a packaging bag are parallel to the top seal part along the cutting line. In the case of tearing and opening, the opened edge film of the opened front film and the rear film is aligned in a straight line, and the opening portion has a good appearance in appearance.

  However, since the shape of the packaging bag along the cutting line near the top seal portion of the easy-open packaging bag as described above is substantially flat, the front film and the rear film are in close contact with each other, When the tearing edge lines are neatly aligned, it is difficult to separate the front film and the rear film at the tearing lines of the front film and the rear film, and it may be difficult to open the packaging bag.

In particular, in the case of a packaging bag provided with a tape-like zipper for resealing parallel to the cutting line, the front surface of the unsealed portion that has been resealed by the zipper after being opened along the cutting line The film and the rear film are in close contact with each other while being sealed with a zipper. Therefore, when each tear film edge line of the front film and the rear film is neatly aligned, it is more difficult to separate the front film and the rear film at the tear line of the front film and the rear film, It may be difficult to open.

  An object of the present invention is to eliminate the above-mentioned problems, by making the tear line between the front film and the rear film of the unsealed portion after the packaging bag is torn and opened along the cutting line for unsealing. Another object of the present invention is to provide an easily openable flexible packaging bag that facilitates the separation of the front film and the rear film of the opening part and makes it easy to open the opening part.

  The invention according to claim 1 of the present invention provides a cutting line on the inner side of the heat seal portion at one end of a flexible packaging bag which is formed by providing a heat seal portion around a folded or double-layered plastic film material. In the easy-opening flexible packaging bag that can be easily cut and opened, along the outer surface or the inner surface of one of the laminated plastic film materials, it was stretched at least in the direction of tearing and opening. An easily openable soft packaging bag, characterized in that a straight-cut film material made of a stretched film is laminated and bonded to a predetermined width along the cutting line.

  The invention according to claim 2 of the present invention is the easily openable flexible packaging bag according to claim 1, wherein the superposed plastic film material is a uniaxial or biaxial stretched film. It is a flexible packaging bag.

  The invention according to claim 3 of the present invention is the easily openable flexible packaging bag according to claim 1, wherein the superposed plastic film material is a laminate film of an unstretched film and a uniaxial or biaxial stretched film. It is an easily openable soft packaging bag characterized by the above.

  The invention according to claim 4 of the present invention is the easily openable soft packaging bag according to any one of claims 1 to 3, wherein both film materials inside the packaging bag are laminated from the laminated film material. An easily openable flexible packaging bag, wherein a tape-like zipper for resealing is mounted on the inner surface of the overlap.

  The invention according to claim 5 of the present invention is the easily openable soft packaging bag according to any one of claims 1 to 4, wherein either of the heat seal portions at both ends of the cutting line is provided. An easily openable soft packaging bag is characterized in that a v-shaped or straight cut-out portion is formed on the outer edge of one or both heat seal portions.

  The invention according to claim 6 of the present invention is the easily openable soft packaging bag according to any one of claims 1 to 5, wherein the straight tearable film material has at least a tearing opening direction as a longitudinal direction. It is an easily openable soft packaging bag characterized by being a tape-like film material oriented.

  The easy-opening flexible packaging bag of the present invention has a tear-opening direction (cutting line direction) on one film material, for example, the outer surface or the inner surface of the film material 1, which is folded in two or stacked in two. ) Is a laminate-bonded film material having a straight-cut property made of a stretched film.

Thereby, one film material 1 to which the straight-cutting film material as the front film material constituting the packaging bag is laminated and bonded, and the other film material 2 as the rear film material,
Film materials having different film stretchability are obtained. Therefore, when the packaging bag of the present invention is cut and unsealed along the cutting line, one of the linearly tearable film materials made of stretched film stretched in the tearing opening direction (cutting line direction) is laminated and adhered. The tear line of the film material 1 (front film material) is cut into a regular straight line shape along the cutting line C.

  However, since the film material 2 (rear film material) is not laminated and bonded to the other film material 2 (rear film material), the shape of the tear line is not a straight line shape, but a zigzag shape, a wavy line shape, or a curved shape. It becomes a meandering irregular line shape.

  As described above, when the two film materials of the front film and the rear film of the two-fold or two-layer overlap film constituting the easy-openable flexible packaging bag of the present invention are cut and opened along the cutting line The tearing lines after the tearing and unsealing of the opened front film and rear film are irregular, with one being a straight line and the other being an irregular line.

  Therefore, even though the front film and the rear film of the flat packaging bag along the cutting line are in close contact with each other, the tearing edge lines are not aligned, so the front film and the rear film each have their tear edges. Of these, one edge can be easily separated from the other tearing edge by the fingertip, and an effect of easily opening the opening portion of the packaging bag after tearing and opening is generated.

  In particular, in the case of a packaging bag provided with a tape-like zipper for resealing parallel to the cutting line, the packaging bag after tearing and opening along the cutting line is resealed with the zipper, The front film and the rear film of the unsealed part are in close contact with each other in a state of being sealed with a zipper.

  Even in such a case, since the tearing edge line of the packaging bag after tearing and unsealing is not aligned, at the tearing line of each of the front film and the rear film, either of the front film or the rear film The tear edge can be easily separated from the other tear edge portion at the fingertip, and an effect of easily opening the opening portion of the packaging bag after the tear opening is generated.

  The easily openable flexible packaging bag of this invention is demonstrated in detail below along embodiment.

  Fig.1 (a) is a sectional side view explaining an example of the packaging bag based on Claim 1 of this invention, (b) is the top view. The top heat seal part 3, the side seal part 3, around the overlapped plastic film material 1, 2, or the overlapped plastic film material 1, 2 overlapped with two plastic film materials, 3 is a soft packaging bag A provided with a bottom seal portion 4 to make a bag. In addition, in the case of using the folded plastic film materials 1 and 2 that are folded in half, one of the side heat seal portions 3 and 3 on both sides facing each other is folded in half on the film material. Therefore, the side heat seal portion may be omitted.

  As shown in FIG. 1 (a), the flexible packaging bag A includes a top heat seal portion 3, a bottom heat seal portion 4, a content storage portion 5, and a cutting line forming portion 6, and FIG. ), The soft packaging bag A is a packaging bag that can be easily cut and opened along the cutting line C inside the top heat seal portion 3 at one end thereof.

  Of the superposed plastic film materials 1 and 2 constituting the flexible packaging bag A, for example, on the outer surface of one film material 1 is an enlarged side cross section of the M portion in FIG. 1A and the M portion shown in FIG. As shown in the figure, a straight breakable film material 8 made of a stretched film stretched at least in the direction along the cutting line C in the direction of tearing and opening extends along the cutting line C to the cutting line forming portion 6 with a predetermined width. Is laminated and adhered.

  The base film of the plastic film material constituting the flexible packaging bag A includes a stretched film stretched in a uniaxial direction or a biaxial direction, a stretched film stretched in a uniaxial direction or a biaxial direction, and an unstretched film. Laminate film is used. In addition, as a plastic film material constituting the flexible packaging bag A, a plastic film made of a single plastic material such as polyethylene, polypropylene, polyethylene terephthalate, or the like, a plastic film layer, a paper layer, a metal foil layer such as aluminum, a metal A plastic film made of a composite material in which any one of a vapor deposition layer and an inorganic oxide vapor deposition layer (gas barrier layer) is laminated can be used.

  2 (a) is a side sectional view for explaining another example of the packaging bag according to claim 1 of the present invention, and FIG. 2 (b) is a plan view thereof, and the folded plastic film materials 1 and 2, Alternatively, a soft product made by providing a top heat seal portion 3, opposing side seal portions 3, 3 and a bottom seal portion 4 around the overlapped plastic film materials 1 and 2 obtained by overlapping two plastic film materials. Packaging bag A.

  As shown in FIG. 2 (a), the flexible packaging bag A includes a top heat seal portion 3, a bottom heat seal portion 4, a content storage portion 5, and a cutting line forming portion 6, and FIG. ), The soft packaging bag A is a packaging bag that can be easily cut and opened along the cutting line C inside the top heat seal portion 3 at one end thereof.

  Of the superposed plastic film materials 1 and 2 constituting the flexible packaging bag A, for example, the inner surface of one film material 2 has an M portion in FIG. 2A and an enlarged side of the M portion shown in FIG. As shown in the cross-sectional view, a straight-cutting film material 8 made of a stretched film stretched in a tearing-opening direction at least along the cutting line C is formed on the cutting line forming portion 6 along the cutting line C. Laminated and bonded to a predetermined width.

  An example of the flexible packaging bag A according to claim 3 of the present invention is the same as the packaging bag shown in FIGS. As the material, a stretched film stretched in at least the tearing and unsealing direction is used, and either one of the film materials 1 and 2, for example, the M portion in FIG. 4, a film material 8 made of an unstretched film is formed on the overlapping inner surface of the film material 2 along the cutting line C with a predetermined width on the cutting line forming portion 6. Are laminated and adhered.

  5A is a side sectional view for explaining an example of a packaging bag according to claim 4 of the present invention, FIG. 5B is a plan view thereof, FIG. 7 is a partially enlarged side sectional view, and the above claim 1. In each of the flexible packaging bags A according to -3, cutting is performed adjacent to the inner side of the bag from the cutting line forming part 6 in which the straight-cutting film material 8 is laminated and bonded to the inner surfaces of the superposed film materials 1 and 2. It is an example of the soft packaging bag A provided with the zipper part 10 for resealing parallel to the line C.

As shown in the M part of FIG. 5 (a) and the M part enlarged side sectional view shown in FIG. 6, the zipper part 10 includes a plastic convex zipper part 11 that can be heat-sealed to a plastic film material. It consists of a concave zipper part 12 and has a tape-like shape. The resealable zipper part 10 has a convex part 11a of the convex type zipper part 11 and a concave part 12a of the concave type zipper part 12 facing each other, and is melted on the superposed inner surfaces of the superposed plastic film materials 1 and 2, respectively. It is formed by wearing and joining.

  The convex portion 11a of the convex zipper portion 11 and the concave opening 12a of the concave zipper portion 12 can be closely fitted to each other, so that the top heat seal portion 3 of the packaging bag A can be connected to the cutting line C. The tear opening part by the side of the top heat-sealing part 3 of the packaging bag A which was torn and opened along can be resealed.

  FIG. 7 shows the inner surfaces of the laminated film materials 1 and 2 of each of the flexible packaging bags A according to the first to third aspects of the present invention, adjacent to the inner side of the bag from the cutting line forming portion 6 and parallel to the cutting line C. It is the other example of the flexible packaging bag A which concerns on the said Claim 4 which provided the zipper part 10 for resealing. A convex zipper portion 11 of the resealable zipper portion 10 is provided adjacent to the linearly tearable film material 8 laminated and adhered to the inner surfaces of the superposed film materials 1 and 2.

  FIG. 8 shows another example of the flexible packaging bag A according to the above-described claim 4 provided with the resealable zipper portion 10, which is a straight-cut film material laminated and adhered to the inner surfaces of the superposed film materials 1 and 2. 8 is provided continuously and extended to the convex zipper part 11 of the resealable zipper part 10.

  In the flexible packaging bag A of the present invention, as shown in the plan views of FIGS. 1 (b), 2 (b), and 5 (b), both side heat seal portions at both ends of the cutting line C are provided. 3, 3 or 3, the outer end edge of one or both of the heat seal portions 3 has a V-shaped or straight (I-shaped) cut-out portion for cutting. 7 is formed.

  Moreover, in the flexible packaging bag A of the present invention, the linearly breakable film material 8 laminated and bonded to the overlapping inner surface of one or both of the overlapping film materials 1 and 2 is: It is a tape-like film material whose longitudinal direction is the tear-open direction, and is laminated and adhered along the tear-open direction.

  Thus, the easy-opening flexible packaging bag of the present invention has a tear-opening direction in one of the two plastic film materials 1 and 2 that are folded in two or two, such as the outer surface or the inner surface of the film material 1. A straight-cut film material made of a stretched film stretched in the direction of the cutting line is laminated and bonded.

  Thereby, one film material 1 to which the straight-cutting film material as the front film material constituting the packaging bag is laminated and bonded, and the other film material 2 as the rear film material are films having different film stretchability. Become a material.

  Therefore, when the packaging bag of the present invention is cut and opened along the cutting line, one of the linearly-breakable film materials made of a stretched film stretched in the tear-opening direction (cutting line direction) is laminated and adhered. The tear line of the film material 1 (front film material) is cut into a regular straight line shape along the cutting line C.

  However, since the film material 2 (rear film material) is not laminated and bonded to the other film material 2 (rear film material), the shape of the tear line is not a straight line shape, but a zigzag shape, a wavy line shape, or a curved shape. It becomes a meandering irregular line shape.

In this way, when the two film materials of the front film and the rear film of the two-fold or two-layer overlap film constituting the easy-openable soft packaging bag of the present invention are cut and opened along the cutting line The tearing lines after the tearing and unsealing of the opened front film and rear film are irregular, with one being a straight line and the other being an irregular line.

  Therefore, even though the front film and the rear film of the flat packaging bag along the cutting line are in close contact with each other, the tearing edge lines are not aligned, so the front film and the rear film each have their tear edges. Among them, one edge can be easily separated from the other tearing edge with the fingertip, and an effect of easily opening the opening portion of the packaging bag after tearing and opening is generated.

  In particular, in the case of a packaging bag provided with a tape-like zipper for resealing parallel to the cutting line, the packaging bag after tearing and opening along the cutting line is resealed with the zipper, The front film and the rear film of the unsealed part are in close contact with each other in a state of being sealed with a zipper. Even in such a case, since the tearing edge line of the packaging bag after tearing and unsealing is not aligned, at the tearing line of the front film and the rear film respectively, either the front film or the rear film The tearing edge can be easily separated from the other tearing edge portion at the fingertip, and the opening portion of the packaging bag after tearing and opening can be easily opened.

(A) is a sectional side view of an example of the easy-opening soft packaging bag of this invention, (b) is the top view. (A) is a sectional side view of another example of the easy-opening soft packaging bag of the present invention, and (b) is a plan view thereof. Side sectional drawing of the other example of the easy-opening soft packaging bag of this invention. The partial expanded side sectional view of the easy-opening soft packaging bag of this invention. The partial expanded side sectional view of the easy-opening soft packaging bag of this invention. (A) is a sectional side view of the example which provided the zipper for resealing in the easy-opening soft packaging bag of this invention, (b) is the top view. The expanded side sectional view of an example of the packaging bag which provided the zipper for resealing in the easy-opening soft packaging bag of this invention. The expanded sectional side view of the other example of the packaging bag which provided the zipper for resealing in the easy-opening soft packaging bag of this invention. The expanded sectional side view of the other example of the packaging bag which provided the zipper for resealing in the easy-opening soft packaging bag of this invention.

Explanation of symbols

1 ... Film material (front film)
2 ... Film material (rear film)
3. Top heat seal part (or side seal part)
4 ... Bottom heat seal part 5 ... Contents storage part 6 ... Cutting line forming part 7 ... Cutting notch part 8 ... Straight tearable film material 10 ... Reseal zipper part

Claims (6)

  Can be easily cut and opened along the cutting line inside the heat-sealed part of one end of a soft packaging bag that has been made with a heat-sealed part around the plastic film material that is folded or folded in two. In the easily openable soft packaging bag, the linearly tearable film material by the stretched film stretched in the tearing direction at least on the outer surface or the inner surface of one of the superimposed plastic film materials is the above-mentioned An easily openable soft packaging bag characterized by being laminated and bonded to a predetermined width along a cutting line.   The easily openable soft packaging bag according to claim 1, wherein the superposed plastic film material is a uniaxial or biaxial stretched film.   The easily openable soft packaging bag according to claim 1, wherein the superposed plastic film material is a laminate film of an unstretched film and a uniaxial or biaxial stretched film.   4. An easily-openable soft packaging bag according to claim 1, wherein a tape-like zipper for resealing is provided on the inner surface of both film materials on the inner side of the packaging bag from the laminated and adhered film material. An easily openable soft packaging bag, characterized in that is attached.   It is an easily openable flexible packaging bag of any one of Claims 1 thru | or 4, Comprising: On the outer edge of either one of both the heat seal parts in the said cutting line both ends, or both heat seal parts An easily openable soft packaging bag characterized in that a V-shaped and straight cut portion for cutting is formed.   6. The easy-opening flexible packaging bag according to claim 1, wherein the linear tearable film material is a tape-shaped film material having at least a tearing opening direction as a longitudinal direction. Easily openable soft packaging bag.

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