JP2008018970A - Tearing auxiliary band, tearing auxiliary band formation method, colored weak line formation device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a user is less likely to notice a line of weakness even if the line is formed in a packaging bag or the like. <P>SOLUTION: While a rolled web of packaging material 4 is conveyed by conveying rollers 20 and 22, the cutting teeth 26a of a die cut roll 26 are pressed to the surface of the packaging material 4, thereby continuously forming a line of weakness. In this case, ink is transferred to the cutting teeth 26a via a primary ink roller 30 and secondary ink roller 32 from an ink pan 28 and thereby the packaging material can be printed with the cutting teeth 26a. Consequently, the formed line of weakness is colored. This makes it easy for a user to visually recognize the colored line of weakness on packaging material in the form of a bag. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tear assist band that assists in tearing an article by forming a weak line, a method for forming the tear assist band, and a colored weak line forming apparatus for forming such a tear assist band.

For example, the prior art which makes opening of a packaging bag easy by forming weak lines, such as a perforation, in the base material layer of a packaging material conventionally is known (refer patent document 1). Such weak lines in the prior art are formed by cutting the base material layer to the extent that it does not penetrate completely. For this reason, even if the packaging bag is formed from the packaging material containing the weak line and the contents are accommodated therein, the sealing performance is not impaired. Further, at the time of opening, the weakening line facilitates the tearing of the packaging material and guides the progress of the breaking line, so that the opening can be formed at the target position.
Utility Model Registration Gazette No. 2566444

  However, one problem common to this type of weakening line is that even if a weakening line is formed, the presence of the weakening line is not easily noticeable by the user, and the weakening line can be used effectively when opened. That is not done. This is because the weak line itself is very narrow (about 0.1 mm to 1 mm), and the user cannot find the weak line without careful observation.

  Therefore, even if a weak line is formed along the planned opening line of the packaging bag as in the above prior art, the user does not notice the weak line and opens the packaging bag from a completely wrong place. If this happens, the weakening line itself will be useless.

  Then, this invention makes it a subject to provide the technique which can be anticipated that articles | goods, such as a packaging bag, are reliably torn at the position where the plan is torn.

  The present invention solves the above-mentioned problem by forming a colored weakening line at a planned tearing position of an article. The weakening line itself weakens the base layer of the article and functions inherently as an aid to the tearing of the article. In addition, in the present invention, the weakening line can be distinguished from the surface color of the article. Since it is colored, there is an advantage that it is easily noticeable to the user.

  For example, in the case of an article such as a packaging bag, if the tear assisting band of the present invention is formed along the planned tear line at the time of opening, the user can easily recognize the presence visually. For this reason, it can prevent that a user tries to open from another position accidentally, and it can be expected that the packaging bag is surely opened at a predetermined opening position. In addition, since the user does not forcibly tear the packaging bag at a misplaced position, it is possible to prevent the contents from popping out due to a break when strongly torn.

  In addition to assisting the tearing of the article, the technology of the present invention is also effective in improving the decorativeness and design of the article. For example, if a figure or a symbol is constituted by a colored weak line, not only the original purpose of assisting the tearing of the article can be achieved, but also a decorative pattern can be printed on the surface of the article.

  Furthermore, if the decorative figures and symbols are reminiscent of some idea, the existence of the tearing auxiliary band itself is a sensory appeal to the user. For example, by drawing a graphic such as scissors or a cutter knife with a colored weak line, the user can be reminded of the idea of “cutting at this position”. In this case, the user can be smoothly guided to the act of cutting correctly at the position of the planned cutting line, and it is possible to reliably prevent the user from cutting at an incorrect position.

  Or in the case of a packaging bag, a user can be made to image the contents of a packaging bag concretely by drawing the design which designed the contents with a colored weak line. In addition, by drawing a trademark used by the manufacturer or drawing a character string with a specific significance, the user who sees it recalls a specific idea or conveys some message. It becomes possible.

  The technique of the present invention can be effective both before and after the article is cut. That is, the tear assisting band represents the planned tearing position before the article is torn, and exhibits the effect of enhancing the visibility, decorativeness, and design by the colored weakening line. In addition, the tear-off band remains on either one (for example, the bag body in the case of a packaging bag) even after the article has been cut into two parts, and exhibits the decorativeness and design by coloring, or reminds the idea. Can continue. In this regard, the conventional perforations were merely used after the article was cut, but the tear assist band of the present invention remains there after the article is cut and can still function. .

  Of course, if the purpose is to enhance the decorativeness or remind the user of some idea, normal printing alone will be sufficient, but it will not be possible to assist in the tearing of the article by mere printing. The weak line alone cannot appeal to the existence.

  On the other hand, in the present invention, the tear assisting belt can appeal its existence, convey some meaning and message, and can smoothly guide the user to the act of tearing the article at the planned position.

The present invention provides the following method in order to form a tear assist zone.
That is, a conveyance process for conveying a sheet-shaped article in a certain direction, and a weakening line that partially weakens the base material layer of the article by pressing the cutting teeth against the outer surface while conveying the article through this conveyance process. A cutting process that forms continuously, and a printing process that proceeds simultaneously with the execution of this cutting process, and that prints on the article at the position of the weak line by attaching ink from the surface of the cutting teeth to the base material layer This is a method for forming a configured tearing aid band.

  Alternatively, the tearing auxiliary band forming method includes a transporting process for transporting a sheet-shaped article in a certain direction, and pressing the cutting teeth on the outer surface of the article while transporting the article through the transporting process, thereby partially covering the base material layer of the article. A weakened line that is weakened continuously, and along with the formation of the weakened line, ink is applied to the base material layer from the surface of the incisor teeth to print on the article at the position of the weakened line. The aspect comprised from a formation process may be sufficient.

  In the former, the act of pressing the cutting teeth to form a weakening line and the act of printing with the cutting teeth as a plate (letter printing) are present in parallel, and these progress simultaneously to form a colored weakening line. It captures aspects. On the other hand, the latter captures the aspect that the colored weakening lines are formed by the formation of the weakening lines by the cutting teeth and the printing. Since the cutting teeth used in the forming method of the present invention are both a cutting tool and a printing plate, it is impossible to separate the formation of weak lines and printing as separate actions.

  In any case, according to the forming method of the present invention, for example, it is not necessary to perform a complicated process in which, for example, printing is first performed at the position of the weakening line and then the weakening line is formed by tracing it with the cutting teeth. become.

  However, when the auxiliary cutting band is seen as a result, it is needless to say that the auxiliary cutting band of the present invention is constituted as long as the resulting weak line is colored even if the forming method of the present invention is not used. . Extremely speaking, only the weakening line is formed first, and then the weakening line is colored, and it is also included in the tear assisting band of the present invention. What formed the line | wire and was made into the colored state will also be contained in the tearing auxiliary band of this invention.

In order to carry out the above forming method, the present invention provides the following forming apparatus.
The configuration of the forming apparatus includes a conveyance path that conveys a sheet-like article in a certain direction, a die-cut roll installed in the middle of the conveyance path, and an ink supply unit that supplies ink to the die-cut roll. . The die-cut roll rotates while pressing the cutting teeth formed on the outer periphery thereof against the article being conveyed, thereby partially weakening the base material layer of the article and continuously forming the weakening line. The ink supply unit comes into contact with the cutting teeth of the die-cut roll at a position different from the conveyance path, and transfers the ink onto the surface of the cutting teeth along with the rotation.

  The above forming apparatus can be realized by a simple configuration in which an ink supply unit is added to an existing die cut roll. Also, by changing the type and color of the supplied ink, for example, it is possible to form a multicolored weakening line that changes color in the longitudinal direction on one article, or to form a weakening line that is color-coded in the widthwise direction. You can also

  According to the present invention, an arbitrary color is given to the weak line to make the presence of the tearing auxiliary band stand out, to enhance the decoration, or to clearly recognize the idea extracted from the specific form of the weak line. Can be.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a packaging bag 2 to which a tearing auxiliary band is attached. The packaging bag 2 is formed, for example, by heat-sealing the peripheral edges 4a to 4d of the two packaging materials 4 stacked in the thickness direction. The seal portions at the peripheral edges 4 a to 4 d square the periphery of the packaging material 4 in accordance with the outer shape of the packaging bag 2. In the example of FIG. 1, the peripheral edges 4 a to 4 d are all heat-sealed by a four-side seal. A mode in which three-way sealing is performed may be used.

  Each packaging material 4 has a laminated structure in which an aluminum vapor deposition layer and a sealant layer are formed on one surface of a base material layer such as paper. One side on which the aluminum vapor deposition layer is formed is positioned on the inside in the state of the packaging bag 2. Such an aluminum vapor deposition layer contributes to maintaining the quality of the contents sealed in the packaging bag 2 and enhancing the gas barrier property.

  The packaging bag 2 of FIG. 1 is scheduled to be opened by tearing one side edge portion (here, the right edge portion) in the longitudinal direction (left-right direction in FIG. 1). For this reason, the packaging bag 2 is formed with, for example, a V-shaped (or U-shaped) notch 6 at one peripheral edge 4b adjacent to one side edge to be torn. The packaging bag 2 has a tear assist band 8 formed at one side edge portion to be torn.

  The tearing auxiliary band 8 is located at a position where the packaging bag 2 is to be torn when opened, that is, a tearing position closer to the inner side than the peripheral edge 4a along the right edge of the packaging bag 2 and from the peripheral edge 4b in contact with one end To the peripheral edge 4d, that is, extending vertically from the upper edge to the lower edge. Although not shown in FIG. 1, a tear assisting band 8 is formed on the other surface of the packaging bag 2 (the surface on the back side in FIG. 1) at a position that overlaps when viewed on both sides.

  Further, an inner fastener (zipper) 10 is provided at one side edge of the packaging bag 2 shown in FIG. The inner fastener 10 is composed of a sealing member in which a pair of resin belts whose transverse cross section (cross section taken along the line AA in FIG. 1) forms a concave shape and a convex shape, for example. Such an inner fastener 10 extends between a pair of peripheral edge portions 4 b and 4 d facing each other at both ends of the tearing auxiliary band 8. After the packaging bag 2 is opened, the contents can be resealed by closing the inner fastener 10, and the contents can be easily taken in and out by opening the inner fastener 10.

[First design]
The tearing auxiliary band 8 is formed by arranging colored weakening lines 8a in the shape of “scissors” in the planned cutting direction as an example of the first pattern. Although only one surface of the packaging bag 2 is shown in FIG. 1, similarly, a tear assisting band 8 in which a plurality of colored weakening lines 8 a are arranged in the planned tear direction is formed on the opposite surface. Yes. In this example, since the packaging bag 2 has only one planned cutting direction, the arrangement direction of the colored weakening lines 8a (the direction of “scissors”) matches each other on both sides of the packaging bag 2.

  Each of the colored weakening lines 8a is cut into the packaging material 4 in the middle of the thickness direction, and a coloring agent is attached to the packaging material 4 inside the cut (for example, printing is performed using ink). Is formed. The processing itself for cutting the wrapping material 4 is a processing technique called “half-cut processing”. In this embodiment, in addition to the half-cut processing, coloring processing (printing) is applied to the inside of the cut. It has a feature in that.

  The color of the colored weakening line 8a only needs to be visually distinguishable with respect to the surface color of the packaging material 4, and the type is not limited to only one color. In any case, since the colored weakening line 8a is formed in the tearing auxiliary band 8, it becomes easier for the user to visually recognize the presence of the tearing auxiliary band 8, and the form of each colored weakening line 8a (here, “ It becomes easier to recognize scissors.

  FIG. 2 is a schematic view showing a process of forming the tear assisting band 8 in the packaging material 4 using the colored weak line forming device. Hereinafter, the configuration of the colored weak line forming apparatus will be described.

  The colored weakening line forming apparatus includes a conveyance path for conveying the packaging material 4 (original fabric) in one direction (here, the horizontal direction). Conveying rollers 20 and 22 are arranged along the conveying path, and the packaging material 4 is conveyed as the conveying rollers 20 and 22 rotate.

  An impression cylinder 24 and a die-cut roll 26 are arranged opposite to the impression cylinder 24 at a position in the middle of the conveyance path. The die-cut roll 26 is a processing jig in which cutting teeth 26a are formed around it, and the impression cylinder 24 is a member that receives the tooth pressure of the cutting teeth 26a. The impression cylinder 24 and the die cut roll 26 rotate in opposite directions at a peripheral speed synchronized with the conveying speed of the packaging material 4.

  Although exaggerated in FIG. 2, the height of the cutting teeth 26 a when viewed from the peripheral surface of the die cut roll 26 is less than 1 mm. Further, in FIG. 2, although simplified using a one-dot chain line, the actual cut teeth 26 a are formed by repeatedly arranging endless tooth shapes corresponding to the pattern shapes of the individual colored weakening lines 8 a in the circumferential direction. It is formed by that. Depending on the form of the colored weakening line 8a, the cutting teeth 26a do not have to be endless.

  The colored weakening line forming apparatus has an ink pan 28 as an ink supply unit. The ink pan 28 is filled with ink, and the ink is always replenished from a replenishment path (not shown) so that a constant amount is always maintained. In addition, a sponge-like primary ink roller 30 and secondary ink roller 32 are disposed as an ink supply unit. Of these, the primary ink roller 30 rotates while its outer surface is immersed in the ink of the ink pan 28. The other secondary ink roller 32 rotates while its outer surface is in contact with the primary ink roller 28 and the cutting teeth 26a.

  As the primary and secondary ink rollers 30 and 32 rotate, the ink filled in the ink pan 28 penetrates into the primary ink roller 30 and is picked up, and then penetrates into the secondary ink roller 32. Then, the ink is transferred from the secondary ink roller 32 to the surface of the cutting teeth 26a of the die cut roll 26 with a constant layer pressure.

  As described above, when the packaging material 4 (raw material) passes through the nip formed between the die-cut roll 26 and the impression cylinder 24 in a state where the ink is transferred to the cutting teeth 26a, the packaging material 4 is subjected to half-cut processing. At the same time, the ink adheres to the half-cut portion. Thereby, said colored weakening line 8a is continuously formed in the packaging material 4 (original fabric). Then, the tear assisting band 8 is formed by the arrangement of the continuous colored weakening lines 8a.

  FIG. 3 is a view showing a longitudinal section of the packaging material 4 after the colored weakening line 8a is formed at a position along the line II-II in FIG. The colored weakening line 8a is composed of a half-cut portion H formed by biting the cutting teeth 26a and a colorant N (ink) attached to the base material layer 4a of the packaging material 4 inside the half-cut portion H. Has been. The maximum width of each half-cut portion H is less than 1 mm. Moreover, the maximum depth of the half cut part H is suppressed to such an extent that it does not exceed the layer thickness of the base material layer 4a. In FIG. 3, the aluminum vapor-deposited layer 4b and the sealant layer 4c are formed below the base layer 4a. Note that a coating layer made of a resin (for example, PET) or the like may be further formed on the surface of the base material layer 4.

  When the colored weakening line 8a formed in this way is viewed with the naked eye of the user, it is recognized as a diagram (pattern) printed on the surface of the packaging material 4 as shown in FIG. Here, an example is shown in which the colorant N is attached in two places along the inner surface of the half-cut portion H, but the form of the colorant N after processing varies depending on the viscosity and quantity of the ink. Different. Therefore, depending on the case, the coloring agent N may adhere to the deepest part of the half cut part H, and it is not restricted to the example of illustration.

  In any case, the colored weakening line 8 a becomes the tear assisting band 8 in the state of the packaging bag 2. The tear assisting band 8 plays a role of accelerating the breakage of the packaging material 4 when the user tears the packaging bag 2 or guiding the direction in which the break line proceeds. However, the packaging material 4 is not completely penetrated in the thickness direction at the half-cut portion H, and the sealing property and gas barrier property are still maintained until the packaging material 4 is torn.

  FIG. 4 is an enlarged view of a part of the packaging bag 2 where the peripheral edge 4b where the notch 6 is formed and the tearing assisting band 8 are formed. As described above, the tearing auxiliary band 8 extends in a direction (in the direction of arrow C in FIG. 4) in which the packaging bag 2 is torn during the opening process. In the following description, this direction is referred to as a “scheduled cut direction”. This planned direction of tearing coincides with the direction in which the wrapping of the packaging material 4 proceeds in the process of opening the package 2 (the direction in which the rupture line extends).

  As shown in FIG. 4, each colored weakening line 8 a has a tapered portion 80 a that is tapered (or tapered) in a direction to be cut, which corresponds to a portion of the handle pattern of “scissors”. To be formed). This taper part 80a plays the role which accelerates | stimulates the fracture | rupture of the packaging material 4 at the time of opening of the packaging bag 2, and guides the advancing direction of the fracture line. Specifically, in the process of breaking the packaging material 4 from the tip of the notch 6, the break line is guided to the taper portion 80a and brought to the center. Thereafter, the break line proceeds from the tip position of the taper portion 80a as viewed in the planned cutting direction, and the next colored weakening line 8a is also guided to the taper portion 80a. As a result, the rupture of the wrapping material 4 does not deviate from the tear assisting band 8 and proceeds along the planned tear line (reference symbol L) on the inner side.

  FIG. 5 is a perspective view showing a tear assist function (opening assist function) of the packaging bag 2 by the tear assist band 8. For example, it is assumed that the user opens the packaging bag 2 while pulling one side edge of the packaging bag 2 toward the front side with one hand. In this case, the packaging bag 2 is cut substantially linearly along the auxiliary cutting band 8 from the notch 6. For this reason, when the inner fastener 10 is provided in the packaging bag 2 as described above, the wrapping material 4 is cut to the inner fastener 10 when the breaking line of the wrapping material 4 is shifted obliquely at the time of opening. Therefore, the sealing function by the re-sealing can be ensured.

  As described above, in the present embodiment, the tear assisting band 8 is constituted by the colored weakening line 8a, so that it is more conspicuous than a simple uncolored half-cut process, and the user can easily recognize the planned tear position. Become. For this reason, it becomes easy for a user to open using the auxiliary function of the tearing auxiliary band 8, and mistakes that are accidentally opened at a position different from the tearing auxiliary band 8 are prevented. In addition, since the colored weakening line 8a is an image of a pattern such as “scissors”, the user can easily understand the significance of “opening from here”, and the decorative property by the tearing auxiliary band 8 by the pattern. The aesthetics of the packaging bag 2 can be improved accordingly.

  In this regard, only the pattern of “scissors” is printed on the packaging material 4 in advance, and a half-cut process is applied to the printed packaging material 4 to form a weak line in accordance with the position of the printed pattern. There is no way to think about how to do it. However, with the method in which the printing and the weakening line are formed in separate steps as described above, it is difficult to adjust the machine to form the weakening line exactly at the position of the printed pattern. It is possible that the position of is slightly shifted.

  In contrast, in the present embodiment, since printing and the formation of the weakening line are performed simultaneously, it is not necessary to align the positions of the two from the beginning, and the printing position and the position of the weakening line cannot be shifted. . Therefore, in this embodiment, the printing and the weakening line can be integrally performed on the solid packaging material 4 (original fabric) by only one process, and the work efficiency is reduced because there is no need for mechanical adjustment. Rise.

  The colored weak line forming apparatus described above has the following advantages in terms of production management. That is, the colored weakening line forming device has a function of simultaneously performing half-cut processing and printing on the packaging material 4 (original fabric) using the die-cut roll 26, and therefore the cut teeth 26a are partially missing. In such a case, the lacked portion is not only half-cut but also lacked in printing. In this case, if a part lacking printing is found in the processed packaging material 4 (original fabric), it can be easily found that there is a part lacking in the cutting teeth 26a. It can be easily found from the appearance that there is a weak line formation failure in No. 4 (raw fabric).

  In this regard, in an apparatus that performs only simple half-cut processing, it is difficult to find a chipped incision from only the appearance of the processed packaging material 4 (raw material), but in this embodiment, the packaging material 4 is used. The merit in manufacturing management is great in that defects and defects can be easily found from the appearance of (raw material).

  The above is a description of the tear assist band 8 using the first pattern, but other patterns, character examples, symbol examples, and the like can be used for the tear assist band 8 of the present embodiment. Each example will be described below with reference to the drawings.

[Second picture]
FIG. 6 is a plan view showing the packaging bag 2 to which a tearing auxiliary band using the second pattern is attached. In the second pattern, as an example, the cutting assisting band 8 is formed by an array of colored weakening lines 8b that are modeled on "goldfish". In the colored weak line 8b of the second pattern, a tapered portion 80b is formed in a portion corresponding to the “tail fin” and a portion corresponding to the “head” of the “goldfish”, respectively. Thereby, when the packaging bag 2 is torn from the notch 6 portion in the planned tear direction C, the breakage of the packaging material 4 proceeds along the planned tear line L while being guided by the tapered portion 80b. Will be opened linearly.

  Also for the tear assisting band 8 using the second pattern, it becomes easier for the user to visually recognize the colored weakening line 8b in the shape of "goldfish", so that it becomes easy to recognize the planned tearing position of the packaging bag 2. Moreover, like the first pattern, the decorativeness by the tear assisting band 8 is enhanced, and the aesthetics of the packaging bag 2 can be improved.

  In the present embodiment, it is possible to form a tear assisting band by applying various patterns / graphics in addition to the first and second patterns described above. In this way, in addition to enhancing the decorativeness by forming colored weak lines with patterns and figures, the user can be reminded of some ideas and meanings.

[String]
Next, an example in which a character string is composed of colored weak lines will be described.
FIG. 7 is a plan view showing the packaging bag 2 to which a tearing auxiliary band having a character string composed of colored weak lines is attached. In this example, as a character string having a specific meaning, the tearing auxiliary band 8 is formed by an array of colored weakening lines 8c which are in the form of words that can be straightened. Note that the border line P1 around the colored weakening line 8c and the arrow-shaped guide line P2 are both printed on the packaging material 4, and are not half-cut portions. Further, the border line P1 and the guide line P2 are not particularly required.

  In the colored weakening line 8c constituting such a character string, a tapered portion 80c is obtained by using a part of each of the characters “MA”, “SU”, “GU”, “KI”, “RE”, “RU”. Is formed. Accordingly, when the packaging bag 2 is torn from the notch 6 portion in the planned tear direction C, the breakage of the packaging material 4 proceeds along the planned tear line L while being guided by the tapered portion 80c. Will be opened linearly.

  With respect to the tearing auxiliary band 8 using such colored character strings, the user can easily recognize the colored weakening line 8c that represents the character string of “straight”, so that the planned tearing position of the packaging bag 2 is recognized. It becomes easy to do. Further, since the colored weak line 8c itself forms a character string having a specific meaning, a message having a meaning content such as “this packaging bag is easy to open linearly” is directly transmitted to the user. be able to. In addition, as with the case of the design of the character string, the decorativeness by the tearing auxiliary band 8 is increased, and the aesthetics of the packaging bag 2 can be improved.

  In the present embodiment, in addition to the above-described character string, a character string having some meaning content can be applied to form the tearing auxiliary band. For example, by adopting various words representing the origin, quality, raw materials, efficacy, use, quantity, nature, etc. of the contents contained in the packaging bag 2 as a character string, a direct message is sent to the user. Can communicate, increase understanding of contents, and attract interest. Further, the language constituting the character string is not limited to a single language.

[Decoration string / decoration symbol]
Next, an example in which a decorative character string (or decorative symbol) is configured with colored weak lines will be described.

  FIG. 8 is a plan view showing the packaging bag 2 to which a tearing auxiliary band using a decorative character string (decorative symbol) is attached. In this example, a character string decorated with bold italic letters is used. Specifically, two upper and lower cut assisting bands 8 are formed as shown in FIG. 8 by an arrangement of two types of colored weakening lines 8d and 8e that are formed in the shape of the word “CUT”. These two types of colored weak lines 8d and 8e have different inclination directions when each character of “CUT” is viewed as italic.

  In the example of FIG. 8, the packaging bag 2 can be opened even if it is torn in the left or right direction. For this reason, the packaging bag 2 is provided with notches 6 at the peripheral edge portions 4b and 4d that are paired on both sides. As seen in FIG. 8, a planned tear line L1 extends from the right notch 6 to the left, and a planned tear line L2 extends from the left notch 6 to the right. These planned tear lines L1 and L2 are not on the same line, but are parallel to each other and separated from each other in the vertical direction.

  Of these, the tearing auxiliary band 8 formed along the planned tearing line L1 extending leftward as viewed in FIG. 8 has a colored weakening line 8d composed of a character string inclined rightward at its upper position, and left at its lower position. It has a colored weakening line 8e made of an inclined character string. In this case, a tapered portion (no reference numeral) is formed between the inclined characters “C” and “C”, “U” and “U”, and “T” and “T” arranged vertically. In this case, the tip of the tapered portion is not closed, but the break line of the packaging material 4 at the time of opening is brought close to the center of the tapered portion as in the example on the left.

  Further, the tearing auxiliary band 8 formed along the planned tearing line L2 extending rightward as viewed in FIG. 8 has a colored weakening line 8e composed of a character string inclined to the left at the upper position, and inclined rightward at the lower position. A colored weakening line 8d made up of a character string. In this case as well, a tapered portion (no reference numeral) is formed between the inclined characters “C” and “C”, “U” and “U”, and “T” and “T” arranged vertically. ing.

  Thus, when the packaging bag 2 is torn to the left from the notch 6 on the right side in FIG. 8, the rupture of the packaging material 4 is between the upper colored weakening line 8d and the lower colored weakening line 8e. Since it advances along the planned tear line L1 while being guided by the taper portion, the packaging bag 2 is opened linearly.

  On the other hand, when the packaging bag 2 is torn rightward from the left notch 6 as seen in FIG. 8, the rupture of the packaging material 4 is between the upper colored weakening line 8e and the lower colored weakening line 8d. Since it progresses along the planned tear line L1 while being guided by the taper portion, the packaging bag 2 is similarly opened linearly.

  Here, an example is given in which the inclined characters “C” and “C”, “U” and “U”, and “T” and “T” are lined up and down. Different characters such as “C” and “T” may be arranged vertically. In addition, here, a space is provided between the colored weakening lines 8d and 8e when viewed along the planned tear lines L1 and L2, but even if the colored weakening lines 8d and 8e are arranged without a gap. Good.

  Also for the tearing auxiliary band 8 using such a decorative character string, the user can easily visually recognize the colored weakening lines 8d and 8e that represent the decorative character string such as “CUT”. It becomes easy to recognize the planned cutting position. In addition, since the colored weak lines 8d and 8e themselves are composed of character strings having a specific meaning, it is possible to easily convey a message having a meaning content such as “CUT = open” to the user. In addition, the decorative character string is also improved in decorativeness by the tearing auxiliary band 8 as in the case of the pattern and character string, and the aesthetics of the packaging bag 2 can be improved.

  In this example, the decorative character string “CUT” is illustrated, but other than this, a decorative character string having some meaning can be applied to form the tearing auxiliary band. In this way, by constructing a decorative character string having some meaning and content with colored weak lines, a message that is easy to understand can be transmitted to the user.

  The present invention can be implemented with various modifications without being limited to the above-described embodiments. For example, the tear assist band 8 may be formed at a plurality of distant locations with respect to one packaging bag 2.

  Moreover, the colored weakening line may be color-coded in one color in one tear assistance zone, or may change with gradation. Alternatively, the colored weakening line may be color-coded in the width direction of the tearing auxiliary band, or may change with gradation.

  Alternatively, a colored weakening line and a non-colored weakening line (only half-cut processing) may be mixed in one tearing auxiliary band, or there are relatively few colored weakening lines in one or several places. The others may be composed of weak lines without color.

  Moreover, the tearing auxiliary band of the present invention is not limited to the use of the packaging bag 2, and may be applied to, for example, a tearing auxiliary band when opening an envelope, or as a tearing auxiliary band when separating a stub such as a ticket. You may apply. The present invention can also be applied to a tear assisting band when opening a box-shaped article.

  In one embodiment, a packaging material having a plurality of layer configurations in addition to the base layer is illustrated, but the present invention can also be applied to an article having only the base layer (single layer configuration). Further, the colored weakening line (or the non-coloring weakening line) does not need to be continuously formed in the entire area along the planned cutting line, and may be formed partially or intermittently.

  In one embodiment, an example of forming a colored weakening line without penetrating the base material layer by half-cut processing is given, but the colored weakening line penetrates the base material layer unless sealing performance is particularly required. Also good. Even in this case, the presence of a colorant such as ink on the base material layer can make its presence stand out.

  In addition, the form of the colored weak line mentioned in one embodiment is an illustration to the last, and arbitrary forms and colors other than these can be used. Needless to say, the specific configuration of the colored weak line forming device can be modified in various ways.

It is a top view which shows the packaging bag to which the tearing auxiliary zone (1st pattern) was attached | subjected. It is the schematic which showed the process in which a tearing auxiliary band is formed in a packaging material using a colored weakening line formation apparatus. It is the figure which showed the longitudinal cross-section of the packaging material after the colored weakening line was formed in the position along the II-II line in FIG. It is an enlarged view of the site | part in which the peripheral part in which the notch was formed, and the tearing auxiliary band were formed among the packaging bags. It is the perspective view which showed the tear assistance function (opening assistance function) of the packaging bag by a tear assistance belt. It is a top view which shows the packaging bag to which the tearing auxiliary zone using the 2nd pattern was attached | subjected. It is a top view which shows the packaging bag with which the tearing auxiliary zone using a character string was attached | subjected. It is a top view which shows the packaging bag to which the tearing auxiliary | assistant band using the decoration character string (decoration symbol) was attached | subjected.

Explanation of symbols

2 Packaging bag 4 Packaging material 4a, 4b, 4c, 4d Peripheral part 6 Notch 8 Tear assist band 8a, 8b, 8c, 8d, 8e Colored weakening line 20 Conveying roller 22 Conveying roller 26 Die-cut roll 26a Cutting teeth 28 Ink pan 30 Primary ink Roller 32 Secondary ink roller 80a, 80b, 80c Taper part H Notch part N Colorant (ink)
L, L1, L2 Planned tear line

Claims (6)

A planned tear line defined for each article that is to be torn during use;
A weakening line formed along the planned tear line and partially weakening the substrate layer of the article;
A tear assisting band, comprising: a colorant attached to the base material layer along the weakening line and coloring the weakening line in a distinguishable manner with respect to a surface color of the article. A planned tear line defined for each article that is to be torn during use;
A figure composed of weakening lines arranged along the planned tear line and partially weakening the base material layer of the article;
A tear assisting band, comprising: a colorant that is attached to the base material layer along the weakening line and that develops the figure in a distinguishable manner with respect to the surface color of the article. A planned tear line defined for each article that is to be torn during use;
A character string having a specific meaning that is arranged along a line to be cut and formed by a weakening line that partially weakens the base material layer of the article;
A tear assisting band, comprising: a colorant attached to the base material layer along the weakening line and coloring the character string so as to be distinguishable with respect to a surface color of the article. A transporting process for transporting a sheet-like article in a certain direction;
An incision step of continuously forming a weakening line that partially weakens the base material layer by pressing the incisors on the outer surface while conveying the article through the conveyance step;
A cutting aid that includes a printing process that simultaneously proceeds with the execution of the cutting process and that prints on the article at the position of the weakening line by adhering ink from the surface of the cutting tooth to the base material layer. A method of forming a band. A transporting process for transporting a sheet-like article in a certain direction;
While the article is being conveyed through the conveying step, a cutting line is pressed against the outer surface to continuously form a weakening line that partially weakens the base material layer. A method of forming a tearing auxiliary band comprising a colored weakening line forming step of printing on the article at the position of the weakening line by attaching ink to the base material layer from the surface of the cutting teeth. A conveyance path for conveying a sheet-like article in a certain direction;
The weakening line is continuously weakened by partially weakening the base material layer of the article by rotating while pressing the incisors formed on the outer circumference against the article being conveyed. A die cut roll to be formed into,
Colored, comprising: an ink supply unit that contacts the cutting teeth of the die cut roll at a position different from the conveyance path, and transfers the ink to the surface of the cutting teeth as the die cut roll rotates Weak line forming device.

Images