JP2004155501A - Packaging material and method of manufacturing packaging material, and packaging bag and method of manufacturing packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an easily openable packaging bag and a manufacturing method for relatively easily manufacturing the packaging bag or the like. <P>SOLUTION: The packaging bag is the easily openable bag 22 which comprises a packaging material formed of a film strip, wherein a plurality of hand-pushed scratches 1K are provided at both sides 1A, 1B of the film strip which forms an adhesion section (a first adhesion section 11) of the packaging material. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a packaging bag used for packaging individual or multiple commodities, and a packaging material for forming the packaging bag. The present invention also relates to a method for manufacturing a packaging bag and a packaging material.

  2. Description of the Related Art When packaging individual or a plurality of products, a packaging bag having a configuration in which a belt-shaped film is thermally bonded is conventionally known. The heat-bonded portion of the packaging bag obtained in this manner was difficult to open because the band-like film was overlaid.

  Therefore, in the related art, in order to open the packaging bag, a cut portion (notch portion) or the like is formed at a necessary portion after the package is thermally bonded. That is, the packaging bag is opened by gripping the periphery of the cut portion and applying a shearing force to the cut portion.

  However, in the packaging bag according to the above-described related art, there is a problem in that a cut portion or the like needs to be provided for each packaging bag after the band-shaped film is thermally bonded, so that the manufacturing process is complicated.

  Further, in the packaging bag according to the related art, there is a problem that the packaging bag can be opened only from the vicinity of the formed cut portion. That is, there is a problem that the packaging bag cannot be opened until the notch is visually recognized.

  Then, this invention was made in order to solve the problem of the said prior art, and aims at providing the packaging material which can be easily opened and the packaging material used for forming this packaging bag. And Another object of the present invention is to provide a production method for producing these packaging bags and packaging materials relatively easily.

  That is, the present invention for solving the above problems is a packaging material constituting a packaging bag that can be easily opened, and is formed using a band-shaped film, and is formed along both side portions of the band-shaped film. Thus, a plurality of press cuts are provided.

  According to such a configuration, since a plurality of press cuts are provided along both side edges of the band-shaped film forming the packaging material, the packaging material is formed by bonding the side edges of the packaging material to each other. At this time, the packaging bag can be easily opened at the overlapping portion of the cut.

Here, the “press cut” refers to a scratch obtained by pressing a cut portion such as a cutter on a side portion of the band-shaped film.
The depth of the incision is preferably set, for example, in the range of about 0.001 mm to 5 mm according to the rigidity of the strip film. It is more preferable that the depth of the cut is set to about 0.001 mm to 2 mm. A cut with such a depth is difficult to recognize with the naked eye, but can be easily sheared by hand. More preferably, the depth of the incision is set to about 0.001 mm to 0.5 mm. If the incision is set within such a range, the packaging bag can be opened relatively easily after bonding, although it can hardly be discerned by the naked eye. In addition, if it is set within such a range, even if the packaging bag is continuously manufactured in a state where the belt-shaped film is wound in a roll shape, the band-shaped film is used in an apparatus for manufacturing the packaging bag or the like. Can be eliminated.
Furthermore, in the present invention, since a plurality of scratches (press cuts) are formed by pressing a cutting portion such as a cutter, hardly any chips are generated, and when a packaging bag is formed, It is possible to suppress the adhesion of dust and the like to the package.

  Further, the present invention for solving the above-mentioned problem is a method for producing a packaging material constituting a packaging bag which can be easily opened, wherein both sides of the band-shaped film wound into a roll are exposed on the side surfaces. On the other hand, it is characterized by having a press-off step of pressing a press-off tool.

According to such a configuration, a packaging material having the various effects described above can be more easily obtained.
That is, if the pressing tool is pressed against the side surface exposed surface of the strip film wound into a roll, the strip film having a plurality of cuts and cuts along the side portions which is a feature of the present invention. Can easily be obtained.

  Further, in the method for manufacturing a packaging material according to the present invention, a tool configured by arranging a plurality of cutting portions is used as the pushing-off tool, and at least one of a position and an angle is changed during the pushing-off process. It is preferable that the press-off tool is pressed a plurality of times against each side surface exposed surface of the band-shaped film wound in a roll shape.

  According to the push-off tool as described above, it is possible to provide a plurality of push-cuts on the band-shaped film wound in a roll by simply pressing the push-off tool once. According to the preferred configuration, the push-off tool is pressed a plurality of times while changing at least one of the position and the angle. Therefore, based on a simple process, the band-shaped film wound into a roll easily. Can be provided with numerous incisions.

  Further, the present invention for solving the above-mentioned problem is a packaging bag which can be easily opened, is constituted by a packaging material formed using a belt-shaped film, and is an adhesive portion of the packaging material. A plurality of press cuts are provided on both side portions of the band-shaped film.

  According to such a configuration, the packaging bag in which the side portions of the packaging material provided with the plurality of cuts and cuts along the both side portions of the band-shaped film are bonded (for example, heat bonded). Therefore, the package bag can be easily opened by applying a shearing force to the overlapping portion of the press cut. Further, since a plurality of the incised cuts are provided, opening can be performed at a plurality of locations instead of at a limited location as in the related art.

  Further, the present invention for solving the above-mentioned problem is a method for manufacturing a packaging bag which can be easily opened, wherein both side surfaces of a packaging material formed of a band-shaped film wound in a roll shape are provided. The present invention is characterized in that it has a pressing step of forming a plurality of pressing cuts on the protruding surface and a bonding step of bonding both side portions of the packaging material.

  Further, in the method for manufacturing a packaging bag according to the present invention, it is preferable that the packaging material is formed by any one of the above-described methods.

According to this preferred configuration, by applying the bonding step to the packaging material obtained as described above, a packaging bag having the above various effects can be obtained relatively easily.
Further, according to this preferred configuration, by a simple operation (a plurality of presses) using a tool having a simple configuration (pressing tool), more (innumerable) pressing cuts are formed on the side of the band-shaped film. Can be formed. Therefore, a packaging bag that can be easily sheared (opened) can be obtained from many places.

The present invention for solving the above-mentioned problems is a packaging bag which can be easily opened, and is characterized in that a plurality of cuts and incisions are provided at least at a location where the packaging bag is to be opened.
Here, the “scheduled opening position” is a concept including not only a limited opening scheduled position but also an area around the opening scheduled position (scheduled opening region). Further, since the packaging bag according to the present invention is characterized by having a structure in which "at least a plurality of cuts and incisions are provided at the scheduled opening position of the packaging bag", the packaging bag other than the "scheduled opening position" is cut off. Naturally, a packaging bag provided with a scratch also belongs to the technical scope of the present invention.

  In the packaging bag according to the present invention, it is preferable that the packaging bag is formed using a film, and the portion to be opened is a portion where the film is bonded.

  Further, the present invention for solving the above-mentioned problem is a method of manufacturing a packaging bag that can be easily opened, and a preparation step of stacking a plurality of packaging bags and placing them on a worktable, And a pressing step of pressing a pressing tool against the packaging bag to form a plurality of pressing cuts.

  As described above, according to the present invention, a packaging bag that can be easily opened and a packaging material used for forming the packaging bag can be obtained. Further, it is possible to obtain a manufacturing method for manufacturing these packaging bags and packaging materials relatively easily.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic perspective view of a packaging material according to an embodiment of the present invention. More specifically, it is a schematic perspective view of a packaging material formed of a band-shaped film wound in a roll shape.

  As the packaging material 1 according to the present embodiment, a single-layer or multiple-layer strip film can be used. As the belt-like film, for example, a synthetic resin film or the like (for example, a non-stretched film, a uniaxially stretched film, a biaxially stretched film, or the like) is used. Further, as a material for forming these films, a foamed member (foamed synthetic resin) such as polypropylene or polypropylene foam is used. Furthermore, the band-shaped film is not limited to the case where a synthetic resin is used. For example, paper can be used, and a band-shaped film in which paper and a synthetic resin are laminated may be used as needed.

  Further, as the belt-like film forming the packaging material 1, a film having thermal adhesiveness or a film having no thermal adhesiveness may be used.

Here, the material having a heat-fusing property forming the belt-like film preferably has a softening temperature (sealing temperature) of about 70 ° C. to 350 ° C., and more preferably a softening temperature of about 100 ° C. to 300 ° C. That is. If the film is softened in such a temperature range, it is possible to appropriately perform thermal bonding.
When a belt-like film having no heat-adhesive property is used, an adhesive such as a glue, an epoxy resin, or a phenol resin is used in an adhesive step described later.
Further, if necessary, an adhesive or the like that exhibits an adhesive effect by performing a heat treatment may be applied to the surface of the belt-shaped film.

  In the following embodiments, a case will be described in which a single-layered band-like film having thermal adhesiveness is used as the packaging material 1.

  As shown in FIG. 1, the packaging material 1 according to the present embodiment is wound around a tube 2 formed of paper, plastic, or the like. Installed in bag manufacturing equipment and the like. In this manner, the packaging material 1 made of a belt-like film wound in a roll shape is hereinafter referred to as a roll body 10.

The packaging material 1 according to the present embodiment is provided with a plurality of small incisions 1K on each of the side portions 1A and 1B. The incisions 1K are formed when the strip film is in the state of the roll body 10. (Details will be described later).
That is, in the present embodiment, the side surface exposed surface (the side surface exposed surface 10A on the front surface side and the side surface exposed surface 10B on the back surface shown in FIG. 1) of the roll body 10 is pressed and cut. In order to form a packaging bag which can be easily opened, which will be described later, it is possible to easily obtain the packaging material 1 having a plurality of cuts and cuts on the side portions 1A and 1B.

  Specifically, in the present embodiment, in order to form a press cut, a press cutting tool including a plurality of cutting parts such as a cutter is used. In addition, for example, the push-off tool is configured integrally by arranging a plurality of cutting portions substantially in parallel.

  Therefore, by pressing the push-off tool configured as described above once against the side surface exposed surface 10A of the band-shaped film (roll body 10) wound around the tube portion 2 (the so-called push-off process is performed once). In this embodiment, the cut 10K1 (or the cut 10K2) shown in FIG. 1 is formed on the side surface 10A.

  Next, in the present embodiment, after the incision 10K1 (or the incision 10K2) formed in parallel in one direction as described above, either the incision cutting tool or the roll body 10 is removed. Rotate. That is, the roll body 10 and the press-off tool are relatively arranged so that the press-off tool has a predetermined angle with respect to the press-cut wound 10K1 (or press-cut cut 10K2) formed earlier, and the press-cutting process is performed again. A press cut 10K2 (or press cut 10K1) is formed on the side exposed surface 10A.

  In the present embodiment, as shown in FIG. 1, press cuts 10K1 and 10K2 crossing each other are formed on the side surface exposed surface 10A by the two press cutting steps. Here, a case is shown in which these incised cuts 10K1 and 10K2 are formed at an angle of about 90 °.

  In addition, in this embodiment, although the case where the press-off process is performed twice was shown in order to prevent the drawing from becoming complicated (see FIG. 1), the present invention is not limited to this configuration. In order to obtain a packaging bag which can be more easily opened, it is preferable to form a large number of press cuts on the side surface exposed surfaces 10A, 10B (that is, on the side portions 1A, 1B).

For example, using a press-off tool in which a plurality of cutting parts such as cutters (a plurality of cutting parts whose length in the longitudinal direction is larger than the diameter of the roll body 10) are arranged in parallel at predetermined intervals (for example, 10 mm intervals). The press-cutting process may be performed a plurality of times while changing at least one of the relative position and the angle between the portion and the roll body 10.
As an example, a press-cutting tool that presses the roll-off tool once against the roll body 10 after performing a parallel movement of the press-cutting tool several mm (for example, 2 mm) is performed a plurality of times (for example, five times) (hereinafter, this process is referred to as a “parallel press-cutting process”). After the parallel press-off process, the roll body 10 is rotated by a predetermined angle (for example, 15 °), the parallel press-off process is performed again, and the rotation at the predetermined angle and the parallel press-off process are performed a plurality of times (for example, 6 times). Such a means for forming a cut is provided.
With such a means, many press cuts can be formed relatively easily on the side surface exposed surfaces 10A, 10B (that is, on the side portions 1A, 1B).
Hereinafter, a case will be described in which a packaging bag is formed assuming that a large number of press cuts are formed on the side surface exposed surfaces 10A and 10B of the roll body 10 by such means.

  Through the steps described above, in the present embodiment, a large number of cuts and incisions (as described above, in order to avoid complication of the drawing, 10K1 in the present embodiment) are formed on the side surface exposed surface 10A of the roll body 10. , 10K2 are described.), And the band-shaped film forming the roll body 10 forms a packaging material having a large number of incised cuts 1K on its side portions 1A, 1B. Become.

  The incision 1K is preferably formed to a depth of, for example, about 0.001 mm to 5 mm in accordance with the rigidity of the strip film, and is preferably about 0.001 mm to 2 mm in view of the appearance and slipperiness. More preferably, it is constituted. If formed at a more preferable depth (about 0.001 mm to 2 mm) in this manner, the incision 1K is difficult to discern with the naked eye, and a packaging bag manufacturing apparatus that continuously forms packaging bags (not shown). Also in (), it is possible to smoothly move or the like and form a packaging bag appropriately. Further, in consideration of the appearance (inconspicuousness) and the good slipperiness, the depth of the cut 1K is preferably about 0.001 mm to 0.5 mm.

  FIG. 2 is a schematic perspective view when a packaging bag is manufactured using the packaging material according to the present embodiment. In the present embodiment, an element for continuously sending out the packaging material 1, an element for folding the packaging material 1 at an appropriate position (folding portion 1C), an element for thermally bonding a predetermined portion of the packaging material 1, and the like are included. The packaging bag is manufactured using the packaging bag manufacturing apparatus, but the detailed structure is omitted here.

As shown in FIG. 2, first, the packaging material 1 continuously fed from the roll body 10 is folded at the folding portion 1C of the packaging material 1 so that the respective side portions 1A and 1B appropriately overlap each other. It is.
Next, the first bonding portion 11 is formed using a heat sealer or the like in order to thermally bond the overlapped edges (side portions 1A and 1B) of the folded and overlapped packaging material 1 in the vertical direction (“the present invention”). Bonding process)).
Next, the second bonding portion 12 is formed using a heat sealer or the like at a predetermined interval to thermally bond the first bonding portion 11 in the horizontal direction. It should be noted that, at the stage where one (lower side in FIG. 2) second adhesive portion 12 is formed, the first adhesive portion 11, the lower second adhesive portion 12, and the folded portion 1C are formed. Thus, a bag-shaped portion 21 surrounded on three sides is formed.
Next, after the to-be-packaged object P is put into the bag-shaped portion 21, the other (upper side in FIG. 2) second adhesive portion 12 is formed, and the to-be-packaged object P is enclosed and sealed. 22 will be configured.
Then, the packaging bags 22 continuously formed in this manner are cut at the central portion of the second adhesive portion 12 one by one or a plurality of them as necessary.

FIG. 3 is a schematic view of a packaging bag configured as shown in FIG. An area (enlarged area) surrounded by a dashed line in FIG. 3 is an enlarged perspective view of the first bonding portion 11.
Since the packaging bag 22 according to the present embodiment is configured as shown in FIG. 2 using the packaging material 1 as shown in FIG. 1, as shown in the enlarged area of FIG. A large number of incised cuts 1K are provided at the overlapped edge.

As described above, the incision 1K formed in the present embodiment is formed very shallow, and in addition, heat is applied to the portion where the incision 1K is provided by the heat sealer. Therefore, the press cut 1K formed on the first bonding portion 11 is hardly visually recognized in a normal circulation process because of hot melting.
However, although it is shallow, a large number of incisions 1K are actually formed, and even if it is melted at the time of thermal bonding, a shear force is generated between a portion where the incisions 1K are provided and a portion where it is not. Greatly differ in drag against Further, in the present embodiment, since a large number of cuts and cuts 1K are provided at both end edges of the packaging material, there is also a portion where the cuts and cuts 1K overlap each other, and a shear force is more likely to act on such a portion. .

That is, since the first adhesive portion 11 according to the present embodiment is provided with a large number of shallow incisions 1K as described above, when the packaging bag 22 is formed and then opened, the first adhesive By gripping the portion 11 and applying a shearing force, a user can be given an image that can be opened from any part of the first adhesive portion 11.
That is, since the pitch of each incision 1K is actually formed at a very narrow interval, no matter where the shearing starts, the closest to the shearing start portion (or the largest force is applied). A shear force acts on the incised cut 1K (in the direction indicated), and it can be easily opened (shearable) from any location.

  Further, the interval (pitch) between the pressing cuts 1K can be arbitrarily set by changing the installation interval of the cutting portion constituting the pressing and cutting tool, the pressing position (or pressing angle) in the pressing and cutting process, and the like. Therefore, according to the present embodiment, it is possible to easily obtain a packaging bag having ease of opening according to the place of use.

  Further, according to the present embodiment, the packaging agent 1 forming the packaging bag 22 can be formed only by the pressing and cutting step for the single-layer strip film (the roll body 10). Processes and manufacturing equipment can be greatly simplified. Further, with the simplification, a great cost reduction can be implemented.

  In addition, according to the present embodiment, since the packaging material 1 and the packaging bag 22 are formed using a single-layer strip film, it is possible to carry out recycling and the like without separating the components.

  The present invention is not limited to the above-described embodiment, and various changes other than those described above can be made without departing from the gist of the present invention.

  For example, in the above-described embodiment, a case has been described in which a plurality of cutting portions are disposed substantially in parallel (one direction) to use a push-off tool integrally formed, but the present invention is not limited to this configuration. Therefore, for example, a plurality of cutting portions may be arranged in an intersecting state (two directions) to constitute a pushing-off tool, or the pushing-off tool may be constituted so as to have intersections in three or more directions. Good. That is, the arrangement angle and the like of each cutting portion are not particularly limited, and the push-off tool is preferably configured using a plurality of cutting portions. In the case of using the pressing tool having such a configuration, a pressing cut can be formed on the side surface exposed surface of the band-shaped film by one or a relatively small number of pressing steps.

  Further, in the above embodiment, the case where a single-layer strip film is used has been described, but the present invention is not limited to this configuration, and a strip film having a plurality of layers may be used as necessary. . Even when such a band-shaped film is used, a packaging bag that can be easily opened can be obtained by providing a large number of press cuts on the side portions of the band-shaped film having a plurality of layers.

  Furthermore, in the above-described embodiment, the case where a belt-like film having thermal adhesiveness is used has been described, but the present invention is not limited to this configuration. Therefore, for example, the packaging bag according to the present invention may be configured by using a band-shaped film coated with some kind of adhesive. Even in such a configuration, a packaging bag that can be easily opened can be obtained by providing a large number of cuts and incisions on the side portions of the band-shaped film.

  Further, in the above embodiment, the case where the present invention is applied in manufacturing a bag formed by sealing three sides (three-side seal bag) has been described, but the present invention is not limited to this configuration, and the three-side seal bag is not limited to this configuration. The present invention is also applicable to the case of manufacturing bags having other configurations. That is, according to the present invention, in any case, the bag can be easily opened from the bonded portion as long as the bag is configured to bond (seal) in a state where the side portions of the belt-shaped film are overlapped. It is possible to manufacture a simple bag, for example, even in the case of a joint bag with an adhesive portion located on the back side of the bag, by applying the present invention, the bag can be easily opened from the adhesive portion on the back side. Can be a bag.

Further, in the above-described embodiment, the case where the packaging material is provided with a press cut and the packaging material is used to form a packaging bag has been described, but the present invention is not limited to this configuration, and as a result, Any configuration may be used as long as a plurality of cuts and cuts are provided in the opening position and area (usually, the bonding portion (sealing portion) of the packaging bag).
Therefore, for example, the packaging bag according to the present invention may be configured by providing a plurality of cuts and cuts in the bonding portion of the packaging bag formed by bonding three or four sides (for example, heat bonding).
Specifically, a plurality of packaging bags are stacked, the stacked packaging bags are placed on a worktable corresponding to the shape of the packaging bag, and one or more pressings by the press-off tool described above are performed. By performing the process on a predetermined location of the packaging bag, a packaging bag provided with a plurality of cuts and cuts may be obtained.

  As described above, when a press cut is provided on the packaging bag later, the press cut can be easily formed only in a certain limited range. In other words, even for a packaging bag in which the position of the unsealing portion is limited, positioning can be easily performed, and a press cut can be easily formed at a predetermined position and a predetermined range.

  Further, in the case where the press cut is provided later on the packaging bag as described above, the position and range in which the press cut is provided can be arbitrarily set as described above, instead of forming the press cut in the entire adhesive portion. Therefore, a press cut can be formed in a minimum necessary portion, and the strength and sealing property of the bonded portion can be improved.

  Further, when the packaging bag is provided with a cut-off cut in this way, a worktable corresponding to the shape of the packaging bag or a work table corresponding to the bonding portion of the packaging bag of any shape can be used. By using a cutting tool (for example, a cutting tool in which a plurality of cutting portions (cutters or the like) are arranged corresponding to a curved shape) or the like, a cut can be relatively easily formed. Therefore, for example, not only a rectangular packaging bag, but also a polygonal packaging bag such as a triangle, a parallelogram, a trapezoid, a pentagon, and a hexagon, and also a packaging bag having a curved portion. A plurality of press cuts can be easily provided.

The interval between the incised cuts is preferably set to about 0.5 mm to 20 mm depending on the size and shape of the packaging bag.
Furthermore, the depth of the incision is set to about 0.001 mm to 5 mm, preferably about 0.01 mm to 2 mm, depending on the strength (eg, film rigidity) and size of the packaging bag. Preferably, it is set to about 0.1 mm to 1 mm.

FIG. 1 is a schematic perspective view of a packaging material (roll body) according to an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic perspective view at the time of manufacturing a packaging bag using the packaging material concerning embodiment of this invention. 1 shows a schematic view of a packaging bag according to an embodiment of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 ... Packaging material 1A, 1B ... Side part 1C ... Folded part 1K ... Press cut 2 ... Tube part 10 ... Roll body 10A, 10B ... Side part exposed surface 10K1, 10K2 ... Press cut 11 ... First adhesion part 12 ... Second adhesive portion 21: bag-like portion 22: packaging bag P: object to be packaged

Claims (9)

A packaging material constituting a packaging bag that can be easily opened,
It is formed using a strip film,
A packaging material, wherein a plurality of press cuts are provided along both side portions of the band-shaped film. A method of manufacturing a packaging material constituting a packaging bag that can be easily opened,
A method for manufacturing a packaging material, comprising: a press-off step of pressing a press-off tool against both side surface exposed surfaces of a belt-shaped film wound in a roll shape. As the pressing tool, a tool configured by arranging a plurality of cutting portions is used,
In the pressing and cutting step, the pressing and cutting tool is pressed a plurality of times against each side surface of the band-shaped film wound into the roll while changing at least one of the position and the angle. 3. The method for producing a packaging material according to item 2. A packaging bag that can be easily opened,
It is composed of a packaging material formed using a belt-like film,
A packaging bag, wherein a plurality of press cuts are provided on both side portions of the band-shaped film, which are bonding portions of the packaging material. A method of manufacturing a packaging bag that can be easily opened,
For both side surface exposed surfaces of the packaging material formed of the band-shaped film wound into a roll, a press-cutting step of forming a plurality of cuts and cuts,
And a bonding step of bonding both side portions of the packaging material. The method for manufacturing a packaging bag according to claim 5, wherein the packaging material is formed by the method according to claim 2. A packaging bag that can be easily opened,
A packaging bag, characterized in that a plurality of cuts and cuts are provided at least in the opening portion of the packaging bag. The packaging bag is configured using a film,
The packaging bag according to claim 7, wherein the portion to be opened is a portion to which a film is adhered. A method of manufacturing a packaging bag that can be easily opened,
A preparation step of stacking a plurality of packaging bags and placing them on a workbench;
And a pressing step of pressing a pressing tool against the plurality of stacked packaging bags to form a plurality of pressing cuts.