JP5469499B2 - Packaging box - Google Patents

Description

  The present invention relates to a packaging box, and more particularly to a paper packaging box provided with an opening detection means at a lid.

Conventionally, various paper packaging boxes have been devised for packaging stored items.
Among such boxes, especially packaging boxes for storing medicines, etc., usually contain a plurality of medicines, and since all of them are not used at once, even after opening the packaging box once Need to be able to close again.

  On the other hand, packaging boxes for commodities sold in stores may be opened by a method that is difficult to notice maliciously (such as a method of opening a cutter by inserting a cutter into the gap of the upper lid). In order to detect and prevent such malicious opening, various opening detection means are provided in the packaging box. As described above, the packaging box for storing medicines, etc., as described above, satisfies the requirement that it can be closed again even after the packaging box has been opened. A press-opening means or the like formed by the eyes).

  In addition, after a regular purchase, the purchaser's family does not use the opening means that can detect the opening without notifying the purchaser, and an unscheduled opening method (for example, sticks such as chopsticks or fingertips) Etc.), and then opening the container by taking out a part of the stored item and closing the lid. After that, the purchaser can open it from the opening means that can detect the opening. Therefore, a purchaser who does not know the situation may mistakenly determine that the packaging is defective at the manufacturing stage, which may lead to consumer complaints.

  Although not intended to detect such tampering or prevent misopening, a box that can be checked for opening is, for example, above the front wall that is part of the box, A pressing part surrounded by a U-shaped interrupted line that reaches the edge is formed, and the content outlet at the top of the box is closed with a lid piece connected to the rear wall that is a part of the box via a rear fold. A package formed by inserting an insertion piece connected to the front edge of the lid piece via a front fold into the box so as to be in contact with the back surface of the front wall and sticking the back surface of the pressing portion to the surface of the insertion piece A paper box (see, for example, Patent Document 1) is known.

  In addition, for the purpose of preventing the opening, for example, a lid plate is connected to the top and bottom of the back plate of the rectangular tube body composed of a front plate, a right side plate, a back plate and a left side plate, and insertion of each end of the lid plate is performed. The lid plate is a top-opening container in which a piece is inserted into the inner surface of the front plate, both or one of them is attached to the inner surface of the front plate surrounded by an opening perforation, and the upper open end of the rectangular tube plate is closed. The front plate sewing machine which forms a protrusion continuous with the cover plate by drilling the insertion piece on the connecting crease between the insertion piece and the insertion piece to form a protrusion continuous with the lid plate. A perforation that is smaller than the perforation and an insertion piece are drilled, and a gap between the perforation and the cut is used as a sticking piece. When the insertion piece is inserted into the inner surface of the front plate, the attachment piece is inserted into the opening perforation. An upside-down peel-opening prevention container (see, for example, Patent Document 2) characterized in that it is attached to the inner surface of the face plate. It is known.

  Similarly, as a packaging box that enables confirmation of opening, an upper cover portion that covers the opening of the body portion is extended to the body portion, and is inserted into the inside of the body portion at the distal end portion of the upper cover portion. A packaging box provided with an insertion piece portion, wherein an insertion guide portion having a longer insertion length than other portions of the insertion piece portion is formed in the insertion piece portion, and the insertion guide portion A finger hooking portion capable of forming a hole at a position of the upper lid portion corresponding to a different position, sealing means for connecting the finger hooking portion and the body portion in the assembled state of the upper lid portion, and the finger A packaging box (see, for example, Patent Document 3) provided with an unsealed display portion that can be displayed by operating a hanging portion to form the hole portion is known.

  Furthermore, as a packaging box that enables confirmation of opening, a box body having an upper surface opened, and a lid that is connected to the first side plate of the box body and opens and closes the upper surface opening of the box body, A folded portion that is folded inward and overlapped with the second side plate is connected to the second side plate facing the first side plate, and can be inserted into the free end portion of the lid along the inner surface of the folded portion into the box body. An insertion part is continuously provided, a first cutout part is formed by facing the insertion part at an upper part of the second side plate, a second cutout part is formed at a folded part at a position facing the first cutout part, A packaging box (see, for example, Patent Document 4) capable of confirming opening is known in which a second cut-out portion is bonded to the insertion portion and closed.

Japanese Utility Model Publication No. 50-40729 Japanese Utility Model Publication No. 61-146221 JP 2005-298049 A JP 2008-120420 A

  According to the packaging box according to Patent Document 1, the insertion piece is inserted into the box so as to contact the back surface of the front wall and the back surface of the pressing portion is adhered to the surface of the insertion piece. Although it can be identified that it has been opened by a normal opening method, if a method such as inserting a stick-shaped object such as a fingernail or chopsticks between the upper edge of the front wall and the lid piece, the opening is detected. There was a drawback that it was opened without any problems.

The above-mentioned Patent Document 2 is intended to prevent the action of inserting a cutter or the like into the gap of the upper lid and opening it to prevent this, and a certain effect can be obtained. However, if a toe or the like is inserted into the upper lid without inserting the cutter, the insertion piece and the front plate can be peeled away while avoiding the protruding portion.
At this time, as disclosed in FIG. 5 of Patent Document 2, when the sticking piece is separated from the insertion piece, it will surely be noticed that it has been once opened, but when the lid is closed again. Since it is not possible to judge from the appearance that it has been opened, there is a drawback that, as usual, if the perforation for opening is pressed and opened from the outside, the opening is not noticed at all.
Further, according to the specific configuration disclosed in Patent Document 2, the protrusion for preventing unauthorized opening by the cutter is formed larger than the dimension between both ends of the perforation, and reinforces the edge of the upper lid. Due to the action, there is a drawback that even if the lid is closed after opening, deformation or distortion of the box is difficult to appear on the appearance.

  The above-mentioned patent document 3 is provided with sealing means for connecting a finger hook part and a body part, and an unsealed display part that can be displayed by operating the finger hook part to form the hole part. When the sealing means is cut, it can be determined that the package has been opened.However, since the use of sealing tape is premised, the number of manufacturing processes and materials increases. Therefore, there is a drawback that the manufacturing cost is expensive.

  Moreover, according to the said patent document 4, as a packaging box which enables confirmation of opening, the box main body which opened | released the upper surface, and the upper surface opening part of the box main body were opened and closed connected with the 1st side plate of the box main body. And a folding portion that is folded inward and overlapped with the second side plate is provided on the second side plate facing the first side plate, and the free end portion of the lid is provided along the inner surface of the folding portion. The first cutout portion is formed on the upper portion of the second side plate so as to face the insertion portion, and the folded portion is provided at the position facing the first cutout portion. It is configured to form two cutout parts and close the lid by adhering the second cutout part to the insertion part, and is superior to Patent Document 3 in that it does not assume the use of a sealing tape. Similarly, insert a cutter or toe between the upper edge and the lid piece. Doing law drawback is opened without being unwrapped detected were those that can not be resolved.

  The present invention has been made for the purpose of preventing erroneous opening of a packaging box and preventing consumer complaints resulting from erroneous opening. Even if the top cover is closed again, it can be easily determined that it has been opened, and there is no need to use a seal or shrink. An object of the present invention is to provide an inexpensive packaging box that can be visually recognized as being opened.

  The present invention comprises a lid plate that can be opened and closed with the upper edge of the box body having a bottomed rectangular tube shape as a base end. The lid plate includes an insertion piece at a free end of the box plate. In a packaging box having an opening pressing portion surrounded by an upper opening perforation at an upper end portion of a contacting back plate, and having a fixing portion to which an inner surface of the opening pressing portion and an insertion piece are fixed, an upper opening sewing machine In order to solve the problem, a packaging box is characterized in that V-shaped notches that open to the upper edges are formed at both ends of the eye, and the fixing part includes right and left edges of the inner surface of the opening pressing part. This means. The “V-shaped” in the V-shaped notch of the present invention includes those in which both end portions are curved. Further, “including the left and right edge portions of the inner surface of the opening pressing portion” means that the gap dimension between the left and right perforations and the fixing portion is reduced.

  In the present invention, the V-shaped notch has one side on the opening pressing portion side and one side on the non-pressing portion side, and is an intersection of the respective sides on the perforation line. The vertices K are arranged, the angle at which the imaginary line including one side of the unsealing pressing part side intersects the imaginary line L that is perpendicular to the upper edge of the back plate and passes through the apex is the pressing part side notch angle, The angle at which a virtual line including one side of the non-pressing part side intersects with the non-pressing part-side notch angle, and the non-pressing part-side notch angle is formed larger than the pressing part-side notch angle The box is a means for solving the problem.

  Furthermore, the present invention provides the packaging box according to any one of the above-mentioned inventions, wherein the width dimension of the non-pressing portion provided on the left and right of the opening pressing portion in the upper edge of the back plate is 5 mm or more and 50 mm or less. Is a means for solving the problem.

  Further, the present invention provides the packaging box in which the protruding portion is formed in the boundary line between the lid plate and the insertion piece in the above invention, wherein the width of the protruding portion is smaller than the width of the opening pressing portion. The box is a means for solving the problem.

  According to the first aspect of the present invention, the lid plate can be opened and closed with the one side of the upper end of the bottomed rectangular cylindrical box body as the base end, the insertion piece is provided at the free end of the lid plate, and the lid In a packaging box provided with an opening pressing portion surrounded by an upper opening perforation at the upper end portion of the back plate that comes into contact with the insertion piece of the plate, and having a fixing portion that fixes the inner surface of the opening pressing portion and the insertion piece Since the V-shaped notch that opens to the upper edge is formed at both end portions of the upper opening perforation and the fixing portion including the right and left edges of the inner surface of the opening pressing portion is provided, the V-shaped The upper edge of the non-pressing part and the upper edge of the unsealing pressing part are separated by the formation of the notch part, and the upper edge of the non-pressing part is greatly bent. Along the gap to guide the perforation to the side where the perforation is broken. It is possible to break. In addition, since the fixing portion is provided up to the perforated portion, when opening is performed without the pressing of the opening pressing portion, a toe or a rod-like object is inserted from the non-pressing portion that is not fixed. Then, the amount of bending of the upper edge of the non-pressing portion is increased, and the toe, the rod-like object and the like are easily guided to the V-shaped cutout portion, and the perforation can be easily broken. For this reason, it can be determined immediately in appearance that the opening operation has been performed.

  In addition, the above configuration eliminates the need for sealing, shrinking, etc., and can be realized only by forming perforations, notches, and fixing portions, and introduces new equipment in addition to normal packaging box manufacturing equipment. Therefore, it is possible to provide a packaging box having an opening detection means at a very low cost.

  The invention according to claim 2 comprises the configuration of the invention according to claim 1 above, and the V-shaped notch has one side on the opening pressing part side and one side on the non-pressing part side, An apex K that is the intersection of the sides is arranged on the eye line, and an imaginary line that includes one side of the unsealing pressing portion side intersects an imaginary line L that is orthogonal to the upper edge of the back plate and passes through the apex. The angle at which the imaginary line intersects the virtual line including one side of the non-pressing part with respect to the virtual line is the non-pressing part-side notch angle, and the non-pressing part-side notch angle is the pressing part-side notch In addition to the function and effect of claim 1 above, the tip of the toe and the like is formed by forming a larger angle than the corner, providing a gentle inclination on the non-pressing portion side, and a steep slope on the opening pressing portion side. From the upper edge of the back plate 2 to be guided to the notch, the perforation is gently perforated by the large inclination of the non-pressing portion side notch angle Q. Thus, the toe is guided from the gap to the side where the perforation is broken, and on the other hand, the toe and the like are prevented from continuing to slide into the gap by the notch angle P formed to be smaller. Thus, fingertips, sticks and the like are more easily guided to the V-shaped cutouts, and the perforation can be easily broken.

  According to the invention according to claim 3, the depth dimension (D) of the V-shaped notch is 1 mm or more and 5 mm or less, with the configuration of the invention according to claim 1 or 2. The ratio of the depth dimension (D) of the notch portion to the width dimension (W5) of the notch portion is 1 for the notch portion depth dimension (D), whereas the width dimension of the notch portion is 2-4. Therefore, in order to achieve the effects of the first or second aspect of the invention, the vicinity of each side of the notch does not bend in the manufacturing process and the distribution process. The perforation can be normally broken without drowning.

  According to the invention which concerns on Claim 4, after providing the structure of the invention which concerns on the said Claim 1, Claim 2 or Claim 3, it is the non-side which was provided in the right and left of the opening press part among the upper edges of a backplate. Since the width dimension of the pressing part is 5 mm or more and 50 mm or less, the effect of the above claim 1 or 2 is obtained, and the width of 5 mm or more and 50 mm or less is mainly enough to insert or not insert the toe. Since only a small gap is formed, when unsealing is performed without pressing the opening pressing portion, if an attempt is made to insert a toe or a rod-like object from the non-pressing portion that is not fixed, the upper edge of the non-pressing portion The amount of bending becomes larger, and the toe, the rod-like object and the like are easily guided to the V-shaped notch, and the perforation can be further easily broken. For this reason, it can be determined immediately in appearance that the opening operation has been performed.

  According to the invention according to claim 5, after having the configuration of the invention according to claim 1, claim 2, claim 3 or claim 4, the protrusion is provided on the boundary line between the cover plate and the insertion piece. In the formed packaging box, since the width dimension of the projecting portion is smaller than the width dimension of the opening pressing portion, the function and effect of the invention according to claim 1, 2, or 3 are obtained. In addition to providing a plurality of unauthorized opening prevention means by the function of preventing unauthorized opening with a cutter due to the formation of the protruding part, the width dimension of the protruding part is made smaller than the width dimension of the opening pressing part and is V-shaped. By setting the position so as not to overlap with the notch portion, it is possible to ensure a state in which the state in which the perforation is broken from the V-shaped notch portion can be clearly determined in appearance.

It is a perspective view which shows the packaging box which concerns on Example 1 of this invention. It is a perspective view which shows the state before a lid | cover in the assembly stage of the cover plate of the packaging box which concerns on Example 1 of this invention. It is a perspective view which shows the packaging box concerning Example 1 of this invention which shows the state which has the trace by which the trial of opening by the method which is not intended was made. It is a perspective view which shows the normal opening state of the packaging box which concerns on Example 1 of this invention. It is an expansion | deployment top view of the packaging box which concerns on Example 1 of this invention. It is a partially expanded view which shows the opening press part of a packaging box which concerns on Example 1 of this invention, and a non-pressing part. It is a perspective view which shows the packaging box which concerns on Example 2 of this invention. It is a perspective view which shows the state before a lid | cover in the assembly stage of the cover plate of the packaging box which concerns on Example 2 of this invention. It is a partially expanded view which shows the opening press part of a packaging box which concerns on Example 2 of this invention, and a non-pressing part.

  The present invention comprises a lid plate 3 that can be opened and closed with the upper end of the bottomed rectangular tube-shaped box body as a base end, and is provided with an insertion piece 4 at the free end of the lid plate 3. An opening pressing portion 20 surrounded by an upper opening perforation 23 is provided at the upper end portion of the back plate 2 in contact with the insertion piece 4, and the inner surface of the opening pressing portion 20 and the insertion piece 4 are bonded with an adhesive 9. In the packaging box provided with a portion, V-shaped notches 22 that open to the upper edge are formed at both ends of the upper perforated perforation 23, and the left and right sides of the opening pressing portion 20 on the upper edge of the back plate 2. The width dimension of the non-pressing portion 21 provided on the inner surface of the opening pressing portion 20 is 5 mm or more and 50 mm or less, preferably 10 mm or more and 30 mm or less. When opening is performed without pressing the portion 20 If a toe F or a rod-like object is to be inserted from the non-pressing part 21 that is not bonded, the fixing part is provided up to the end part 200 of the perforation 23 across the length, and the toe F can be inserted or cannot be inserted. Since the toe F, the rod-shaped object and the like are easily guided to the V-shaped cutout portion 22, the perforation 23 or the back plate 2 continuous to the perforation 23 is easily broken. Thus, the packaging box 1 provided with the unsealing detection means at a very low cost, which can immediately determine the appearance of the unsealing operation, is realized.

  1 is a perspective view showing a packaging box 1 according to a first embodiment of the present invention, and FIG. 2 is a perspective view showing a state before the lid is closed in the assembly stage of the lid plate 3 of the packaging box 1 according to the first embodiment. FIG. 3 is a perspective view showing the packaging box 1 according to the first embodiment showing a state where there is a trace of an attempt to open by an unintended method, and FIG. 4 shows the packaging box 1 according to the first embodiment. FIG. 5 is a developed plan view of the packaging box 1 according to the first embodiment.

The packaging box 1 according to the first embodiment of the present invention is a paper packaging box 1 having a rectangular parallelepiped shape as shown in FIGS. 1, 2, and 5, and includes a front plate 7, a right side plate 5, and a left side. The boundary lines of the plate 6, the back plate 2, and the connection piece 25 provided on the side surface of the back plate 2 are folded in a mountain, and the connection piece 25 is attached to the back side of the right side plate 5 to form a square tube shape. By forming the bottom surface of the packaging box 1, the box body is formed. A cover plate 3 is provided continuously and integrally on the upper edge of the front plate 7 via a mountain fold line, and an insertion piece 4 is provided on the free end of the cover plate 3 via a mountain fold line.
Further, an opening pressing portion 20 serving as an opening means is provided on the upper edge portion of the back plate 2 facing the front plate 7. A right tongue piece 50 is integrally formed on the upper edge of the right side plate 5, and a left tongue piece 60 is integrally formed on the upper edge of the left side plate 6.

  The opening means is an opening pressing portion 20 surrounded by an upper opening perforation 23 at the upper end portion of the back plate 2. In addition, V-shaped notches 22 that open to the upper edge are formed at both ends of the perforated perforation 23 having an upper opening shape. Furthermore, a portion of the inner surface of the opening pressing portion 20 that is close to the left and right perforations 23 is a leading portion 200. On the other hand, non-pressing portions 21 are provided on the left and right of the opening pressing portion 20 in the upper edge of the back plate 2. The non-pressing portion 21 in this embodiment has a width dimension W4 of about 30 mm on both the left and right sides.

  As shown in FIGS. 1 and 2, the hot melt adhesive 9 is provided on the outer surface of the insertion piece 4 with a length W2 corresponding to the width dimension W1 of the opening pressing portion 20 continuously between the left and right edge portions 200. Is applied to form an adhering portion in which the outer surface of the insertion piece 4 and the inner surface of the opening pressing portion 20 are fixed by heating and melting the hot melt adhesive 9. The fixing part is configured to include the right and left edge parts 200 of the inner surface of the opening pressing part, that is, the gap dimension W6 between the perforation 23 and the fixing part is reduced, and the gap dimension W6 is approximately 0 to 3 mm. is there. Further, the adhesive 9 is not applied to the portion of the insertion piece 4 that contacts the non-pressing portion 21.

  As shown in FIG. 6, the V-shaped notch 22 has one side 220 on the opening pressing part 20 side and one side 221 on the non-pressing part 21 side, and each side on the end of the perforation 23. The vertex K of the notch 22 that is the intersection of 220 and 221 is arranged. A corner at which a virtual line M including one side 220 on the opening pressing portion 20 side intersects with a virtual line L that is orthogonal to the upper edge of the back plate 2 and passes through the vertex K is defined as a pressing portion-side notch angle P. When the angle at which the virtual line N including the one side 221 on the non-pressing portion 21 side intersects L is the non-pressing portion-side notch angle Q, the non-pressing portion-side notch angle Q is formed larger than the pressing portion-side notch angle P. It is. In addition, the intersection between the imaginary line M and the upper edge line R1 of the back plate 2 and the intersection between the imaginary line N and the upper edge line R2 of the back plate 2 are rounded by dropping corners. In the first embodiment, the depth dimension D of the notch 22 is about 2 mm, and the maximum width dimension W5 is about 4 mm.

  According to the packaging box 1 according to the first embodiment, according to a normal operation from the unopened state shown in FIG. 1, when the opening pressing portion 20 is pressed with the toe F or the like and the perforation 23 of the back plate 2 is cut, Like the general opening means, with the opening pressing portion 20 and the insertion piece 4 fixed, the insertion piece 4 falls into the packaging box 1 and lifts the cover plate 3 from the state. As shown in FIG. 4, it can be opened.

  On the other hand, when unsealing is performed without the pressing of the opening pressing portion 20, if the toe F or a rod-like object is inserted from the non-pressing portion 21 that is not bonded, the fixing portion is at the perforation 23. Since the portion to which the hot melt adhesive 9 is not applied is formed with only a slight gap so that the left and right 30 mm toe F can be inserted or cannot be inserted, the toe F or When the toe F or the rod-like object is slid by inserting the rod-like object or the like, the toe F or the rod-like object or the like is guided to the V-shaped notch 22, and as shown in FIG. Can be broken very easily, and further, the back plate 2 can be broken in any direction such as downward from the perforation 23 to generate a damage mark 24. For this reason, it can be determined immediately in appearance that the opening operation has been performed.

  In the first embodiment, as described above, the formation of the notch 22 separates the upper edge of the non-pressing portion 21 and the upper edge of the opening pressing portion 20, and the upper edge of the non-pressing portion 21 is easily bent. The upper edge of the opening pressing part 20 becomes difficult to bend, and each of them has an independent bending, and the upper edge of the non-pressing part 21 is bent while the gap between the insertion piece 4 and the upper edge of the back plate 2 is notched. The perforation 23 is guided to the side to break along the perforation 23 through the part 22.

  In the present embodiment, as shown in FIG. 6, the non-pressing portion side notch angle Q is formed larger than the pressing portion side notch angle P, and thus the non-pressing portion 21 not bonded to the insertion piece 4. When the toe F or the like is inserted from the gap on the side and the toe F is slid longitudinally, the non-pressing part side notch angle Q is gently inclined from the upper edge of the back plate 2 that guides the toe F or the like to the notch 22. The toe F or the like is guided along the perforation 23 from the gap to the side where the perforation 23 is to be broken, while the toe F or the like continues by the pressing portion side notch angle P formed smaller. It has the effect of preventing sliding in. Since the non-pressing part side notch angle Q is formed larger than the pressing part side notch angle P, of the sides 220 and 221 of the notch part 22, one side 221 on the non-pressing part 21 side has a slightly gentle inclination. In addition, a difference in inclination is provided such that one side 220 on the opening pressing portion 20 side is steeper, and the perforation 23 can be further easily broken by this configuration.

  If the distance in the longitudinal direction where the non-pressing part 21 and the cover plate 3 overlap (the width dimension of the non-pressing part 21) is approximately 5 mm or more and 50 mm or less, it is impossible to insert the toe F or a single toe F is inserted. As a result, the upper edge portion of the non-pressing portion 21 is greatly bent, and the perforation 23 can be easily broken.

If the distance in the longitudinal direction where the non-pressing portion 21 and the cover plate 3 overlap is more than approximately 50 mm, the bending of the upper edge portion of the non-pressing portion 21 is easily absorbed by the bending of the entire back plate 2 and the perforation 23 is broken. It tends to be difficult to cause.
Further, if the longitudinal distance at which the pressing portion 21 and the cover plate 3 overlap is less than 5 mm, it is more preferable that not only the toe F but also a rod-like object can be easily inserted. In a state in which the cover plate 3 is closed by contacting the inner surface of the face plate 2, the back plate 2 is pressed and bent by the restoring force of the insert piece 4, and the insert piece 4 comes off from the back plate 2. It becomes easy to produce the malfunction which opens.

  FIG. 3 shows the break of the perforation 23 when opening from the right side, but when opening from the left side is performed in the same manner, The perforation 23 will break similarly.

  For this reason, in order to ensure particularly functional stability, the range of the gap between the non-pressing portion 21 and the cover plate 3 is approximately 10 mm or more, which is more reliable in the closed state again, and the toe F It is even more preferable if the thickness is 30 mm or less, which facilitates automatic breakage of the perforation 23 during insertion.

As for the notch 22, in the first embodiment, as described above, the depth dimension D is about 2 mm and the maximum width dimension W5 is about 4 mm, but the depth dimension D is 1 mm or more and 5 mm or less, If the width dimension W5 is in the range of 2 to 4 times the depth dimension D of the notch 22, the perforation 23 can be broken particularly well.
If the width dimension W5 with respect to the depth dimension D is less than twice, or if the depth dimension exceeds 5 mm, the vicinity of each side of the notch 22 tends to be bent during the manufacturing process and the distribution process. Further, if the width dimension with respect to the depth dimension D exceeds four times or the depth dimension D is less than 1 mm, the function of the notch 22 does not sufficiently function, and a stick-like object such as a fingernail or chopsticks is inserted. At this time, there is a tendency that it is difficult to cause breakage of a good perforation 23.

  7 is a perspective view showing the packaging box 1 according to the second embodiment of the present invention, and FIG. 8 is a perspective view showing a state before the lid is closed in the assembly stage of the lid plate 3 of the packaging box 1 according to the second embodiment. FIG. 9 is a partially enlarged view showing the opening pressing portion 20 and the non-pressing portion 21 of the packaging box 1 according to the second embodiment.

  The packaging box 1 according to the second embodiment of the present invention has a configuration in which the protruding portion 30 is formed at the boundary between the cover plate 3 and the insertion piece 4 with the packaging box 1 according to the first embodiment as a basic configuration. is there. Therefore, in the second embodiment, the same operational effects as the packaging box 1 according to the first embodiment are basically obtained.

  The protrusion 30 in the packaging box 1 according to the second embodiment has a configuration in which two protrusions 30 are arranged side by side at the boundary between the cover plate 3 and the insertion piece 4. , The width dimension W1 between the left and right perforations 23 of the opening pressing part 20 (that is, the width dimension of the opening pressing part 20), and a range in which the two protrusions 30 and the dimension between them are combined. Is formed to be smaller than the width dimension W1 between the left and right perforations 23 of the opening pressing part 20, and further, a position that does not overlap the notch part 22 and a position closer to the center than the notch part 22 It is.

  By forming the protrusion 30 having the width dimension W3 that is very limited to the above position, it is possible to have an accompanying effect that can prevent cutting using the cutter blade by providing the conventional protrusion 30; In addition, the perforation 23 was broken very easily by performing the guide function to the V-shaped cutout portion 22 without causing the protrusion 30 to interfere with the toe F or the like in operation, and the opening operation was performed. This is not concealed by the projecting portion 30, and it is possible to have an effect that can be immediately discriminated in appearance.

  In each of the first and second embodiments, the opening detection means of the present invention is provided for the cover plate 3. However, in the present invention, the opening detection means for the bottom plate 8 is also, for example, the first and second embodiments. The same configuration as above can be made vertically symmetrical, and the insertion piece 4a, the right tongue piece 50a, and the left tongue piece 60a can be similarly used instead of the insertion piece 4, the right tongue piece 50, and the left tongue piece 60.

  Further, the packaging box 1 according to the present invention can be used with the back plate 2 placed on the front side and the front plate 7 placed on the back side, and the back plate 2 in the present invention is thus placed on the front side. Including cases where

  In each of Examples 1 and 2, the fixing part is formed by the adhesive 9, but the present invention is not limited to this, and for example, a double-sided tape having a high adhesive force can be used.

Further, in each of the first and second embodiments, the adhesive 9 is continuously applied between the left and right edge portions 200 for the formation of the fixing portion. However, the present invention is not limited to this, If the portion 200 is included, the adhesive 9 can be applied intermittently and linearly (that is, in the form of a dotted line), or can be applied in the form of dots in a wide range vertically and horizontally You can also
Further, the fixing portion in the present invention does not need to include all of the right and left edge portions 200 in the vertical direction, and it is only necessary that the right and left edge portions 200 are included in the fixing portion.
As described above in the first and second embodiments, the size of the gap between the left and right perforations 23 and the fixing portion (that is, the distance from the perforation to the fixing portion permitted by the edge portion 200) is reduced. Although it is about 0 mm to about 3 mm, it is not limited to this as long as it is within the range that can secure the ease of breakage of the perforation 23 and prevent inadvertent breakage.

DESCRIPTION OF SYMBOLS 1 Packaging box 2 Back plate 20 Opening press part 200 Edge part 21 Non-pressing part 22 Notch part 220 One side (opening press part side)
221 One side (non-pressing part side)
23 Perforation 24 Damage mark 3 Lid plate 30 Protruding part 4 Insertion piece 5 Right side plate 50 Right tongue piece 6 Left side plate 60 Left tongue piece 7 Front plate 8 Bottom plate 9 Adhesive D Depth dimension (depth dimension of notch)
F Toe K Vertex L Virtual line M Virtual line N Virtual line P Pressing part side notch angle Q Non-pressing part side notch angle R1 Upper edge line R2 Upper edge line W1 Width dimension (width dimension between left and right perforations)
W2 length (length of hot melt adhesive)
W3 Width (protrusion width)
W4 width dimension (width dimension of non-pressing part)
W5 Width (Notch width)
W6 spacing dimension

Claims (5)

The back plate is provided with a lid plate that can be opened and closed with the upper end of the box body having a bottomed rectangular tube shape as a base end, the insertion plate is provided at the free end of the lid plate, and the back plate is in contact with the insertion piece of the lid plate. In the packaging box provided with an opening pressing portion surrounded by an upper opening perforation at the upper end portion, and having a fixing portion to which the inner surface of the opening pressing portion and the insertion piece are fixed,
Form V-shaped notches that open to the upper edge at both ends of the perforated perforation,
The fixing part includes a left and right edge part of the inner surface of the opening pressing part.   The V-shaped notch has one side on the opening pressing part side and one side on the non-pressing part side, arranges vertices serving as intersections of the respective sides on the perforation line, and has an upper edge of the back plate The angle at which a virtual line including one side of the unsealing pressing part side intersects with a virtual line that is orthogonal to the vertex and is a pressing part side notch angle, and a virtual that includes one side of the non-pressing part side with respect to the virtual line The packaging box according to claim 1, wherein a corner at which the line intersects is defined as a non-pressing part side notch angle, and the non-pressing part side notch angle is formed larger than the pressing part side notch angle.   The depth dimension (D) of the V-shaped notch is 1 mm or more and 5 mm or less, and the ratio of the depth dimension (D) of the notch and the width dimension (W5) of the notch is the depth of the notch. The packaging box according to claim 1 or 2, wherein the dimension (D) is 1, whereas the width of the notch is 2 to 4.   The packaging box according to claim 1, 2 or 3, wherein the width dimension of the non-pressing portion provided on the left and right of the opening pressing portion in the upper edge of the back plate is 5 mm or more and 50 mm or less.   5. The packaging box in which a protruding portion is formed at the boundary line between the cover plate and the insertion piece, wherein the width of the protruding portion is smaller than the width of the opening pressing portion. Packaging box.

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