JP4807525B2 - Foldable packaging container - Google Patents

Description

  The present invention relates to a foldable packaging container, and more particularly, to a foldable packaging container that can be folded and made compact in accordance with the size of the contents reduced by using a part of the contents. .

For example, it is a solid material such as curry roux, filled in a resin-molded container provided with a cutting and separating deep groove for easy use in small portions, and this resin-molded container is placed in a carton container or packaging container. In this way, solids in packaging containers for consumers are manufactured.
For example, the consumer uses half of the solid material contained in the resin-molded container in the packaging container, and stores the remaining part in a refrigerator or the like for the next use. In this case, the remaining solid material in the resin-molded container may be stored in a refrigerator or the like without being put in a carton.

In general, in addition to the product name and product name, the carton is printed with a shelf life, cooking method, ingredients, additives, manufacturer's indication, precautions, traceability, and a photographic pattern to increase purchase motivation. Yes.
Therefore, if you store only the solid matter in a resin-molded container without a carton, this information written on the carton is lost, which is inconvenient for consumers as well as important information such as precautions and expiration dates. There are also safety issues due to the inability to browse. Furthermore, the resin-molded container filled with the solid material can not open the resin-molded container when using the solid material and take out the solid material easily. The exposed resin molded container may be damaged when it is put in and out of a refrigerator or the like, or may be damaged by piercing or dropping during storage.

In order to eliminate such inconvenience of storage of solid matter without a carton, as one method, the solid matter contained in the resin-molded container remaining in the first purchased carton is put and stored. This method stores a useless space that does not contain solid matter, and hinders efficient use of a refrigerator or the like.
As another method for eliminating the inconvenience of storing solid matter without such a carton, it is conceivable to appropriately cut the carton and discard unnecessary portions. In addition, there is a problem in cutting a carton having a relatively high strength, in addition to the troublesomeness that requires tools such as scissors, which is undesirable in terms of generation of dust and aesthetics.

In order to solve some of these problems, according to the remaining amount of articles stored in the packaging box, a part of the packaging box is cut or separated and bent to form a lid with a part of the remaining part. Packaging boxes that reduce the volume have been proposed (see, for example, Patent Documents 1 and 2).
In the packaging box disclosed in Patent Documents 1 and 2, etc., by cutting or separating the packaging box, that is, the carton, the information described in the carton is lost, which is not only inconvenient for consumers but also a caution. Safety issues due to inability to view important information on matters and expiration dates have not been completely solved. Further, partially cutting or separating the carton has a problem of generation of dust.

  In the packaging boxes disclosed in Patent Documents 1 and 2, etc., a plurality of perforations for cutting across the carton are provided so that partial excision or separation of the carton can be easily and cleanly performed. . The process of forming a cylindrical carton while wrapping solid material from a sheet-like carton material is at a high speed, for example, producing 100 to 200 pieces per minute. This may cause troubles such as the perforation being cut. Therefore, these cartons have a problem that a strong material having a high cost must be used or a production rate must be extremely low.

JP-A-2005-162345 Design registration No. 1210815

(Object of invention)
The present invention has been made in view of the above-mentioned problems of the packaging container for foldable solid materials of the prior art, and the contents described in the carton, that is, the packaging container, that is, the product name, the trade name, and the taste. It is an object of the present invention to provide a packaging container that can be folded without losing any deadline, cooking method, ingredients, additives, manufacturer's indications, precautions, traceability, and photographic patterns to increase purchase motivation.
Another object of the present invention is to provide a foldable packaging container that does not generate dust, does not waste the storage volume of a refrigerator, and has a beautiful and hygienic appearance.
It is another object of the present invention to provide a foldable packaging container that does not use scissors or the like, and that can be folded very easily with a finger or the like and can be accidentally folded into another state.
It is another object of the present invention to provide a foldable packaging container that is not likely to be inadvertently deformed by a load when the packaging containers are stacked in multiple stages.

The present invention
Adhering both side edges of the sheet member through a glue margin provided on one side edge to make the cross section a quadrangle, a square cylinder composed of a surface, a bottom face and two side faces, and both ends of the square cylinder In a packaging container comprising an extended flap, and the flap forms the first lid portion and the second lid portion of the rectangular tube body,
The bottom surface is provided with a valley fold line at a bottom fold position of the bottom surface when the packaging container is folded, and a tongue is formed by a perforation at a position in the first lid portion direction from the valley fold line on the bottom surface; A perforation extending from both end portions of the tongue portion to the corner portion of the bottom surface on the first lid portion side is formed, and the tongue portion is detachable at a boundary line between the bottom surface and the flap on the second lid portion side. Means for fixing to the
The discontinuous first valley fold line extending from the end of the both sides to the side fold position corresponding to the valley fold line from the end on the first lid portion side of the both sides, and the side A Y-shaped valley fold line composed of a second valley fold line and a third valley fold line extending from the folding position to the surface direction on the second lid portion side and the bottom surface direction on the second lid portion side is provided.
There is a foldable packaging container characterized by the above.

Embodiments of the present invention are as follows.
The position of the valley fold line on the bottom surface is a distance between the bottom surface and the surface, a is a distance from an end of the bottom surface on the first lid portion side to the valley fold line, and a bottom side of the tongue portion. When the distance to the end on the first lid side is c, and the distance from the bottom end on the second lid side of the bottom to the valley fold line is d,
a + b + c ≧ d
It is characterized by being. By comprising in this way, after opening a 1st cover part, by folding a packaging container with a valley fold line, the edge part by the side of a 1st cover part and the edge part by the side of a 2nd cover part are substantially corresponded. The tongue portion can be reliably and easily detachably fixed to the boundary line between the bottom surface and the flap on the second lid portion side.

  The discontinuous first valley fold line is a break line. By comprising in this way, the foldable packaging container which does not have a possibility of deform | transforming carelessly by the load when the packaging container is stacked in multiple stages can be provided.

  The discontinuous first valley fold line is provided so that a gap is formed between an end of the first valley fold line on the first lid portion side and a mountain fold line of the flap. With such a configuration, it is possible to more stably provide a foldable packaging container that is not likely to be inadvertently deformed by a load when the packaging containers described above are stacked in multiple stages.

    The tongue portion is formed adjacent to the first lid portion. With such a configuration, it is possible to reliably fold not only when half of the contents remain, but also when more than that amount remains.

  A mountain fold line is provided at a position where the bottom surface connects the vertices of the two third valley fold lines, or on both sides, a mountain fold line is formed at the same position corresponding to the position of the mountain fold line on the bottom surface. It is provided. With such a configuration, the packaging container of the present invention can be easily and reliably folded and folded.

  The width of the margin is less than or equal to ½ of the distance between the surface and the bottom surface. With such a configuration, when the both side surfaces are folded by the Y-shaped valley fold line, the folding of the side surface bonded via the glue margin is not obstructed by the glue margin.

According to the foldable packaging container of the present invention,
1) What is written on the carton or packaging container, that is, the product name, product name, expiration date, cooking method, ingredients, additives, manufacturer's indication, precautions, traceability, loss of photographic design to increase purchase motivation A packaging container that can be folded without being formed can be formed.
2) It is possible to form a foldable packaging container that does not generate waste, does not waste the storage capacity of a refrigerator, and has a beautiful and hygienic appearance.
3) A foldable packaging container can be formed without using scissors or the like, with a finger or the like, and without the risk of being accidentally folded into another state.
4) When taking out the contents from the folding container, it can be opened from the second lid, and after taking out the contents, it can be easily flattened and discarded by crushing from above.
5) Further, by configuring the first valley fold line as a discontinuous line, packaging with respect to the load in the vertical direction relative to the first valley fold line as compared with the case where the first valley fold line is configured as a continuous line. The strength of the container can be increased. That is, it is possible to prevent the packaging container from being deformed due to the first valley fold line of the packaging container being carelessly broken by the load when the packaging containers are stacked in multiple stages.

Hereinafter, a foldable packaging container according to an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a plan view of a sheet member according to the first embodiment. FIG. 2 is a perspective view of the packaging container of the first embodiment. FIG. 3 is a perspective view of a state in which the first lid portion P of the packaging container according to the first embodiment is opened. FIG. 4 is a perspective view of the packaging container in a substantially folded state according to the first embodiment. FIG. 5 is a perspective view of a state in which the second lid portion Q of the packaging container in a substantially folded state according to the first embodiment is opened.

As shown in FIG. 1, the sheet member 10 includes a first side surface 22, a surface 24 that is laterally adjacent to the first side surface 22, a second side surface 26 that is laterally adjacent to the surface 24, and a side surface that is lateral to the second side surface 26. And a paste margin surface 30 adjacent to the lateral side of the bottom surface 28. The width W of the adhesive marginal surface 30 is not more than half of the width of the first side surface 22 and the second side surface 26, for example, 2/5, and this does not hinder the folding function of the first valley fold line 50 described later. As shown in FIG. 1, the glue margin surface 30 also has a glue margin at a position corresponding to the third valley fold line 54 in order to facilitate the bending of a third valley fold line 54 described later of the first side surface 22. A cut line 31 is formed. The margin allowance cut line 31 ends at a position of several tenths of a millimeter before the edge opposite to the bottom surface 28. That is, the margin cutting line is not formed at the edge of the margin surface 30.
The sheet member 10 further includes a first upper flap 32 and a first lower flap 34 adjacent to the upper and lower sides of the first side surface 22, an upper flap 36 and an upper and lower flap 38 adjacent to the upper and lower sides of the surface 24, A second upper flap 40 and a second lower flap 42 adjacent to the upper side and the lower side of the second side surface 26, and a bottom upper flap 44 and a bottom lower flap 46 adjacent to the upper side and the lower side of the bottom surface 28 are provided.

  The boundary line between the first side surface 22 and the first upper flap 32 is a perforation 32A, and the boundary line between the first side surface 22 and the first lower flap 34 is a mountain fold line 34A. The boundary lines between the surface 24 and the upper and lower flaps 36 and 38 are mountain fold lines 36A and 38A. The boundary line between the second side surface 26 and the second upper flap 40 is a perforation 40A, and the boundary line between the second side surface 26 and the second lower flap 42 is a mountain fold line 42A. The boundary line between the first side surface 22 and the first lower flap 34 and the boundary line between the second side surface 26 and the second lower flap 42 may be perforated lines instead of the mountain line.

The boundary line between the bottom surface 28 and the bottom upper flap 44 includes a linear perforation 44A and a finger-hanging concave perforation 44B that forms a tongue portion 28R provided on the bottom surface 28. The finger-hanging concave perforation 44B is composed of a return prevention portion 44BA extending from the linear perforation 44A and an arcuate portion 44BB at the tip thereof.
The boundary line between the bottom surface 28 and the bottom bottom flap 46 includes a mountain fold line 46A and a cut line 46B formed at the center of the mountain fold line 46A so that the tongue 28R is engaged. As shown in FIG. 1, the cut line 46 </ b> B has its both ends bent downward, facilitating insertion of the bottom surface protrusion 28 </ b> R. Note that the cut line 46B may not be bent downward at both ends.

  A first valley fold line 50, a second valley fold line 52, and a third valley fold line 54 that form a Y-shape are formed in the upper portions of both the first side surface 22 and the second side surface 26. The first valley fold line 50 extends on the center line of the first side surface 22 from the perforations 32A and 40A to a position where the vertex intersects an extension line of the valley fold line 60 described later. The second valley fold line 52 and the third valley fold line 54 are opened at an angle α from the position L to the left and right with the extension line of the position L as an axis, respectively, and the position M of the lateral side of the first side face 22 and the second side face 26 , N.

A valley fold line 60 is formed on the bottom surface 28 so as to overlap a line connecting the two positions L of the first side surface 22 and the second side surface 26 in FIG. Specifically, the distance between the bottom surface 28 and the surface 24 is a, the distance from the end of the bottom surface 28 on the first lid P side to the valley fold line 60 is b, and the bottom surface 28 and the bottom bottom flap 46 are from the bottom of the tongue portion 28R. C is the distance to the boundary line, and d is the distance from the bottom 28 end of the bottom surface on the second lid Q side to the valley fold line 60,
a + b + c ≧ d
A valley fold line 60 is formed at a position that satisfies the above. In the case of the first embodiment, since the bottom side of the tongue portion 28R coincides with the boundary line between the bottom surface 28 and the bottom bottom flap 46, the distance c is calculated as 0 (zero).
Further, if necessary, a mountain fold line 62 is provided on the bottom surface 28 at a position connecting the two positions N, that is, the vertices N of the two third valley fold lines. Providing the mountain fold line 62 facilitates the folding of the packaging container and enables an orderly and beautiful folding.

The formation of the packaging container 20 from the sheet member 10 and the filling of the packaging container 20 with the solid material are performed by applying glue to the surface of the adhesive marginal surface 30, and the adhesive marginal surface 30 of the sheet member 10 on the back surface of the first side surface 22. Paste to make a square tube.
Next, the first lid part P or the second lid part Q is closed. Hereinafter, the case where the 1st cover part P is closed is demonstrated. The first upper flap 32 and the second upper flap 40 are bent toward the back side, that is, the inner side of the rectangular tube shape, and then the bottom upper flap 44 is bent on the bent first upper flap 32 and second upper flap 40. Next, an adhesive is applied to the top, that is, the outer surface of the first upper flap 32, the second upper flap 40, and the bottom upper flap 44 that are bent and overlapped. In this application, it is preferable to apply in a straight line by one operation in terms of efficiency in the manufacturing process.

  In order to make it possible to apply a straight adhesive by this one operation, both ends of the bottom upper flap 44 are cut into a square shape except for the bottom. The shape of the cut may be a triangular shape instead of a square shape. In short, when the first upper flap 32 and the second upper flap 40 are folded and the bottom upper flap 44 is folded thereon, the bottom upper flap 44 is bent. Cut so that the first upper flap 32 and the second upper flap 40 can be seen from both ends. The upper flap 36 is bent on the first upper flap 32, the second upper flap 40 and the bottom upper flap 44 to which the adhesive is applied, and the first upper flap 32, the second upper flap 40 and the bottom upper flap 44 are bent. Then, the upper flap 36 is bonded. Thus, the first lid part P is closed.

  Next, the solid material is inserted from the opened second lid portion Q, the second lid portion Q is closed in the same procedure as the first lid portion P, and the solid material is contained as shown in FIG. The manufacture of the container 20 is completed. Both ends of the bottom bottom flap 46 may be cut into a square shape or a triangle shape like the bottom top flap 44.

  The first lid P is opened in the method of taking out half of the solid contained in the packaging container 20. That is, the perforation 44B is cut by placing a finger on the bottom surface protrusion 28R and pushing it inward. Next, by pulling the finger outward, the perforation 44A, the perforation 40A and the perforation 32A are cut at a stretch, and as shown in FIG. 3, the bottom flap 44, A state in which the first upper flap 32 and the second upper flap 40 are stuck thereon can be observed. In this state, the solid matter is taken out through the opened first lid P.

  When half of the solid is used, half of the remaining part is generated. The method of accommodating the remaining half and resealing the packaging container 20 with the volume being halved is shown in FIG. 2 in the first valley fold line 50 and the second valley fold on both the first side surface 22 and the second side surface 26. Lightly push the line 52 and the third valley fold line 54. With the first valley fold line 50, the second valley fold line 52, and the third valley fold line 54 pushed in a little, the packaging container 20 is folded around the valley fold line 60 as shown in FIG. At this time, when the mountain fold line 62 is not formed, if the mountain fold line 62 is not formed, the vicinity of the position where the mountain fold line 62 should be folds, and between the mountain fold line 62 and the valley fold line 60 corresponding positions. The region corresponding to the valley fold line 60 sinks greatly in the region of. At the final stage where the bottom surface 28 is almost completely folded in half, the bottom surface protrusion 28R is inserted into the cut line 46B. The bottom surface convex portion 28R inserted into the cut line 46B is easily inserted at the arc-shaped portion 44BB, and after the insertion is completed, the back prevention portion 44BA prevents the bottom surface convex portion 28R from being unintentionally pulled out.

There are two methods for re-sealing the packaging container 20 containing half of the solid material remaining in half.
The first resealing method is a method of returning the bottom surface 28 folded in two to the original substantially flat state. The tongue is removed by inserting a finger or the like between the portion near the second lid portion Q of the bottom surface 28 and the front flap 36, and the bent bottom surface portion 28 is pulled away from the unfolded bottom surface 28 portion. Lift up. Thereafter, the remaining half of the solid matter that has been accommodated is taken out from the already opened first lid P.

In the second resealing method, the second lid Q is opened. That is, a thumb is hooked on the bottom cut line 46B, and the second lid portion Q is opened by pulling at once. At this time, if the gluing configuration of the second lid portion Q is the same as that of the first lid portion P, it is naturally the same opened state as the first lid portion P. From the opened second lid Q, the remaining half of the solid matter is taken out. Thereafter, the packaging container 20 is flattened by crushing.
Instead of adopting the gluing configuration of the first lid portion P for the second lid portion Q, it may be configured to glue only the front and lower flaps 38 and the bottom bottom flap 46 in consideration of manufacturing costs and the like. The unsealed state at this time is shown in FIG.
The second resealing method is superior to the first resealing method in that both the first lid portion P and the second lid portion Q are opened, and thus it is easy to crush and flatten. ing.

(Second Embodiment)
The foldable packaging container of the second embodiment differs in the folding position on the surface 28 of the foldable packaging container of the first embodiment. Therefore, in the description of the foldable packaging container of the second embodiment, the same configuration as the foldable packaging container of the first embodiment is the same as the foldable packaging container of the first embodiment in the drawings. The description is omitted.

  FIG. 6 is a plan view of the sheet member of the second embodiment. FIG. 7 is a perspective view of the packaging container of the second embodiment. FIG. 8 is a perspective view of a state in which the first lid P of the packaging container of the second embodiment is opened. FIG. 9 is a perspective view of the packaging container in a substantially folded state according to the second embodiment.

  A boundary line between the bottom surface 28 and the upper bottom flap 44 is a mountain fold line 44AA. There are linear perforations 148 </ b> A in the inner diagonal direction from both ends of the bottom surface 28, and the linear perforations 148 </ b> A form the fan part 100. The perforation 148B forms a bottom surface convex portion 128R protruding from the lower end portion of the linear perforation 148A. The tongue portion 128R is formed by a return preventing portion 148BA extending from the linear perforation 148A and an arcuate portion 148BB ahead.

  A boundary line between the first side surface 22 and the first lower flap 34 is a perforation 134A. A boundary line between the surface 24 and the lower and upper flaps 38 is a mountain fold line 38A. A boundary line between the second side surface 26 and the second lower flap 42 is a perforation 142A. The boundary between the bottom surface 28 and the lower bottom flap 46 includes a perforation 146A and a cut line 146B formed at the center position of the perforation 146A so that the tongue portion 28R is engaged. The cut line 146B is linear as shown in FIG.

  In the gluing configuration of the second lid portion Q, the boundary line between the first side surface 22 and the first lower flap 34 is a perforation 134A. A boundary line between the surface 24 and the lower and upper flaps 38 is a mountain fold line 38A. A boundary line between the second side surface 26 and the second lower flap 42 is a perforation 142A. The boundary between the bottom surface 28 and the lower bottom flap 46 includes a perforation 146A and a cut line 146B formed at the center position of the perforation 146A so that the tongue portion 28R is engaged. The cut line 146B is linear as shown in FIG. And how to close the 2nd cover part Q is the same as that of 1st Embodiment.

The foldable packaging container of the second embodiment has an advantage that the accommodation volume is larger than the foldable packaging container of the first embodiment. For example, when the solid matter is a perfect cuboid and there is no space such as a deep groove for cutting and separation, and therefore the solid matter is contained in the packaging container without any gaps, the solid matter contained in the packaging container 20 There is an advantage that half of the can be accommodated without difficulty. That is, the volume after folding of the foldable packaging container of the second embodiment is larger than the volume after folding of the foldable packaging container of the first embodiment, and at least half of the packaging container before folding is complete. Is formed.
The fan portion 100 formed by the straight perforation 144A is the second lid portion Q of the bottom surface 28 in the first opening method for returning the bottom surface 28 folded and overlapped to the above-described substantially flat state. It is possible to insert a finger between the fan part 100 and the bottom surface 28 instead of putting a finger between the portion close to the front surface and the upper flap 36, and there is an advantage that it can be opened more easily.

(Third embodiment)
In the third embodiment, the contents described in the carton, that is, the packaging container, that is, the product name, the product name, the expiration date, the cooking method, the material, the additive, the manufacturer's indication, the caution, the traceability, and the purchase motivation are enhanced. The purpose is to provide a packaging container that can be folded without losing any of the photographic patterns. For foldable packaging that does not generate waste, does not waste the storage space of a refrigerator, etc., and has a beautiful and hygienic appearance. In addition to the purpose of providing a container, in addition to the purpose of providing a foldable packaging container that does not use scissors, etc., can be folded very easily with fingers, etc., and accidentally folded into another state, It is an embodiment for achieving the object of providing a foldable packaging container that is not likely to be inadvertently deformed by a load when the packaging containers are stacked in multiple stages. , Packaging containers foldable third embodiment is different from the first shape of the valley fold lines in the side surface 26 of the packaging container foldable in the first embodiment. In addition, a mountain fold line 55 is newly provided on the side surface 26 of the foldable packaging container of the first embodiment. Therefore, in the description of the foldable packaging container of the third embodiment, the same configuration as the foldable packaging container of the first embodiment is the same as the foldable packaging container of the first embodiment in the drawings. The description is omitted.

  FIG. 10 is a plan view of the sheet member of the third embodiment. FIG. 11 is a perspective view of the packaging container of the third embodiment. FIG. 12 is a perspective view of a state in which the first lid portion P of the packaging container of the third embodiment is opened. FIG. 13 is a perspective view of the packaging container in a substantially folded state according to the third embodiment. FIG. 14 is a perspective view of the third embodiment with the second lid portion Q of the packaging container in a substantially folded state opened.

  The 1st valley fold line 51 in the side surface 26 of the packaging container in 3rd Embodiment is a discontinuous 1st valley fold line, and consists of a dotted line and a broken line. This prevents inadvertent deformation due to the load when the packaging containers are stacked in multiple stages. Increasing the gap width of the discontinuous portion among the dotted line and the broken line makes it easier to achieve the above object, but it is not preferable in terms of achieving the object of easy folding of the packaging container. On the other hand, if the gap width of the discontinuous portion is reduced, the purpose of easy folding of the packaging container is easily achieved, but the purpose is to prevent inadvertent deformation due to the load when the packaging containers are stacked in multiple stages. From the aspect of achievement, it is not preferable. In consideration of the size and material of the packaging container, the practitioner will adjust the gap width of the discontinuous portion as appropriate.

  Moreover, the said discontinuous 1st valley fold line 51 does not contact the mountain fold lines 32B and 40B from the surface of the objective achievement of preventing the deformation | transformation carelessly by the load when the packaging containers are stacked in multiple stages. Thus, it is preferable to utilize the gap width of the discontinuous portion. Furthermore, the tip ends of the second valley fold line 52 and the third valley fold line 54 of the Y-shaped valley fold line extending in the surface direction on the second lid side and in the bottom direction on the second lid side are first. The lengths of the second valley fold line 52 and the third valley fold line 54 are preferably slightly shortened so as not to contact the end portions of the first side surface 22 and the second side surface 26 in the width a direction. The same applies to the valley fold line 60 and the mountain fold line 62 provided on the bottom surface 28.

  On the side surfaces 22 and 26 of the packaging container, a broken line 55 is newly provided. This makes it easy to fold the packaging container. The position where the mountain fold line 55 is provided is most preferably a position corresponding to the mountain fold line 62 provided on the bottom surface 28 from the viewpoint of easy folding of the packaging container.

It is a top view of the sheet member of a 1st embodiment. It is a perspective view of the packaging container of 1st Embodiment. It is a perspective view of the state which opened the 1st cover part P of the packaging container of 1st Embodiment. It is a perspective view of the packaging container of the substantially folded state of 1st Embodiment. It is a perspective view of the state which opened the 2nd cover part Q of the packaging container of the substantially folded state of 1st Embodiment. It is a top view of the sheet member of a 2nd embodiment. It is a perspective view of the packaging container of 2nd Embodiment. It is a perspective view of the state which opened the 1st cover part P of the packaging container of 2nd Embodiment. It is a perspective view of the packaging container of the substantially folded state of 1st Embodiment. It is a top view of the sheet member of a 3rd embodiment. It is a perspective view of the packaging container of 3rd Embodiment. It is a perspective view of the state which opened the 1st cover part P of the packaging container of 3rd Embodiment. It is a perspective view of the packaging container of the substantially folded state of 3rd Embodiment. It is a perspective view of the state which opened the 2nd cover part Q of the packaging container of the substantially folded state of 3rd Embodiment.

Explanation of symbols

L position M position N position P first lid portion Q second lid portion 10 sheet member 22 first side surface 24 surface 26 second side surface 28 bottom surface 28R, 128R tongue portion 30 adhesive margin surface 32 first upper flap 32A perforation 32B mountain Broken line 34 First lower flap 34A Mountain broken line 134A Perforated line 36 Upper flap 36A Mountain folded line 38 Lower lower flap 38A Mountain folded line 138A Perforated line 40 Second upper flap 40A Perforated line 40B Mountain folded line 42 Second lower flap 42A Mountain folded line 142A Sewing line Eye 44 Bottom flap 44A Straight perforation 44AA Perforated line 44B Perforated line 44B Return prevention part 44BB Arc-shaped part 46 Bottom bottom flap 46A Perforated line 146A Perforated line 146B Cut line 146B Cut line 148A Straight perforated line 148B Perforated line 148BA Part 148BB Yen Jo unit 50 first valley fold line 51 first valley fold dashed 52 second valley fold line 54 third valley fold line 55 mountain fold lines 60 valley fold line 62 mountain fold lines 100 fan-shaped portion

Claims (8)

Adhering both side edges of the sheet member through a glue margin provided on one side edge to make the cross section a quadrangle, a square cylinder composed of a surface, a bottom face and two side faces, and both ends of the square cylinder In a packaging container comprising an extended flap, and the flap forms the first lid portion and the second lid portion of the rectangular tube body,
The bottom surface is provided with a valley fold line at a bottom fold position of the bottom surface when the packaging container is folded, and a tongue is formed by a perforation at a position in the first lid portion direction from the valley fold line on the bottom surface; A perforation extending from both end portions of the tongue portion to the corner portion of the bottom surface on the first lid portion side is formed, and the tongue portion is detachable at a boundary line between the bottom surface and the flap on the second lid portion side. Means for fixing to the
The discontinuous first valley fold line extending from the end of the both sides to the side fold position corresponding to the valley fold line from the end on the first lid portion side of the both sides, and the side A Y-shaped valley fold line composed of a second valley fold line and a third valley fold line extending from the folding position to the surface direction on the second lid portion side and the bottom surface direction on the second lid portion side is provided.
A foldable packaging container characterized by that. The position of the valley fold line on the bottom surface is a distance between the bottom surface and the surface, a is a distance from an end of the bottom surface on the first lid portion side to the valley fold line, and a bottom side of the tongue portion. When the distance to the end on the first lid side is c, and the distance from the bottom end on the second lid side of the bottom to the valley fold line is d,
a + b + c ≧ d
The foldable packaging container according to claim 1.   The foldable packaging container according to claim 1, wherein the discontinuous first valley fold line is a break line.   The discontinuous first valley fold line is provided such that a gap is formed between an end of the first valley fold line on the first lid side and a mountain fold line of the flap. Item 5. A foldable packaging container according to item 1.   The foldable packaging container according to claim 1, wherein the tongue portion is formed adjacent to the first lid portion.   The foldable packaging container according to claim 1, wherein a mountain fold line is provided at a position where the bottom surface connects the vertices of the two third valley fold lines.   The foldable packaging container according to claim 1, wherein a mountain fold line is provided at a position corresponding to the position of the mountain fold line on the bottom surface on both side surfaces.   The foldable packaging container according to claim 1, wherein a width of the adhesive margin is ½ or less of an interval between the surface and the bottom surface.

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