JP2010100307A - Self-standable carton - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a self-standable carton having a complete standability in its assembled state, and having a bottom part with a high sealability. <P>SOLUTION: Among a front plate 2, a rear plate 4, a left side plate 1, and a right side plate 3 which constitute a cylindrical body part, overlapping parts 6 and 7 are continuously provided at lower ends of the front plate 2 and the rear plate 4 via a folding line, respectively. Bottom plates 8 and 9 are continuously provided at lower ends of the overlapping parts 6 and 7 via upwardly convex arc-shaped folding line (a) and b, respectively. A vertical width B of protruding parts of the folding lines (a) and b of the arc shape is greater than 1/2 of a lateral width C of the side plate 1, and a vertical width D at both ends is equal to 1/2 of the lateral width C of the side plate 1. An adhering piece 10 is continuously provided at the lower end of one of the bottom plate 9, and the adhering piece is symmetrical to the bottom plate with respect to an inner lateral folding line c. An inner bottom part 11 having the same size as the adhering piece extends from a lower end of the other bottom plate 8. A tongue piece 12 is continuously provided at both sides over the bottom plate 8 and the inner bottom part 11, and the tongue piece protrudes by a length less than 1/2 of the lateral width C of the side plate 1 via folding lines "d" and "e". <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention belongs to the technical field of cardboard cartons that are assembled and used at stores such as fast food stores and convenience stores, etc., and relates to a self-supporting carton that becomes a self-supporting shape when assembled when contents are put in Is.

  Conventionally, when selling french fries or chicken nuggets at stores such as fast food stores and convenience stores, a type of paperboard carton that is assembled when contents are put in is used. This type of carton is designed to hold the folded product by hand and inflate the torso, then stretch the bottom plate and keep it in a carton shape before putting the contents into the paper cup. In comparison, there is an advantage that the cost is low and the handling is convenient without being bulky at the time of storage or transport before use.

  However, this carton has a curved bottom plate and is not self-supporting, so the contents are put on the napkin paper and put out to the customer, but it looks bad because it spills out was there. In view of this, an example of a carton devised so that it can be easily made into a carton shape at the time of use and is self-supporting is disclosed in Japanese Patent Application Laid-Open No. 9-118328.

  In the self-supporting carton disclosed in this publication, the overlapping portion is connected to the lower ends of the front plate and the rear plate among the front plate, the rear plate, and the left and right side plates constituting the cylindrical body portion via a crease. The upper and lower widths of the projecting portions of the arc-shaped creases are larger than one-half of the left and right widths of the side plates and are formed on both side ends via the arc-shaped creases protruding upward at the lower ends of the overlapping portions. A bottom plate whose vertical width is equal to one half of the left and right width of the side plate is connected to each other, and a bonding piece is connected to the lower end of one bottom plate via an inner horizontal fold ruled line, and an inner side is connected to the lower end of the other bottom plate. It consists of a blank plate that extends the bottom and is provided with outer vertical folding rules at the center of the left and right side plates, and each overlapping portion of this blank plate is folded inward to the inner surface of the front plate and the rear plate, respectively. While bonding, bend the bonded piece and stick the inner surface to the outer surface of the other bottom plate to make it a folded state, It is stored and transported in the state.

  In order to change the folded state into a carton shape, first, the entire body is gripped by hand and a pressing force is applied to the outer vertical folded ruled portion. Then, the front plate and the rear plate start to move back and forth, and each bottom plate starts to tilt while being bent along the arc-shaped crease. At the same time, the bonding piece bonded to the other bottom plate is pulled by the bottom plate and starts to be separated from the one bottom plate, and the one bottom plate and the bonding piece start to be inclined in a mountain shape on both sides of the inner lateral folding ruled line. Further, the inner bottom portion starts to be inclined on the extension line of the bottom plate together with the other bottom plate. Further, when a pressing force is applied to the outer vertical folding ruled portion, the front plate and the rear plate continue to move back and forth, and the movement is stopped when the space between the front plate and the rear plate becomes equal to the lateral width of the side plate.

  As described above, since the vertical width of the arc-shaped portion such as the bottom plate is larger than half of the lateral width of the side plate, in the state where the width between the front plate and the rear plate is equal to the lateral width of the side plate, the bottom plate is completely It cannot be horizontal, and a slight gap is formed between the inner bottom portion and one bottom plate.

  Therefore, when further pressing force is applied to the outer vertical folding ruled part, the inner bottom part and one bottom plate are in close contact with each other and there is no gap, and the other bottom plate, inner bottom part, one bottom plate, and the bonding piece are all downward. It will be in the state where it became the shape of a protruding curved surface. Similarly, the lower part of the front plate and the rear plate also has a curved surface shape protruding outward, and firmly sandwiches the other bottom plate, inner bottom, one bottom plate, and the bonding piece. Thereby, the bottom of the box is firmly closed. In addition, when a gap is generated between the inner bottom portion and one bottom plate, in addition to applying a pressing force to the outer vertical folding ruled portion, the pressing force from the inside is applied to the other bottom plate and the inner bottom portion from above. By adding in the vicinity of the center of the boundary portion, the inner bottom portion and one bottom plate may be brought into close contact with each other.

JP-A-9-118328

  The above-mentioned self-supporting carton should not be bulky by being folded flat when stored and transported, and it can be easily carton-shaped when used, but it is completely self-supporting in the assembled state, and it must be carton-shaped. It is excellent that it can be reliably performed with one touch at the same time, but since there is a gap between the bottom plate etc. and the left and right side plates, the bottom is poorly sealed and has a lot of oil When food with sauce or sauce is stored, the oil or sauce leaks from the gap, and there is a problem of soiling hands.

  The present invention has been made in view of such problems, and an object thereof is to provide a self-supporting carton having a completely self-supporting state in an assembled state and a bottom portion having a high degree of sealing. There is.

  In order to achieve the above object, the self-supporting carton of the present invention includes a front plate, a rear plate, and left and right side plates constituting a cylindrical body part, each of which has a crease at the lower end of the front plate and the rear plate. The upper and lower widths of the projecting portions of the arc-shaped creases are larger than one half of the left and right widths of the side plates via the arc-shaped creases protruding upward at the lower ends of the overlapping portions. In addition, a bottom plate having a vertical width equal to one-half of the lateral width of the side plate is provided continuously on both side ends, and a piece of paste symmetrical to the bottom plate is provided on the lower end of one bottom plate via an inner horizontal folding rule. In addition, an inner bottom portion of the same size as the bonding piece is extended to the lower end of the other bottom plate, and it is more than half of the width of the side plate through the creases on both sides extending from the bottom plate to the inner bottom portion. This bracelet is composed of a blank plate that is formed by connecting tongue pieces protruding in small lengths and providing outer vertical folding rules at the centers of the left and right side plates. With adhered respectively to the inner surface of the front plate and the rear plate by bending the overlapping portions of the click plate on the inside, it is characterized by being obtained by bonding the inner surface thereof to the outer surface of the other of the bottom plate by bending the Hagohen.

  In the self-supporting carton having the above-described configuration, it is preferable that both sides extending over the other bottom plate and the inner bottom portion have a shape projecting outward.

  In the self-supporting carton having the above configuration, it is preferable to provide a crease that crosses the center across the other bottom plate and the inner bottom.

  In the self-supporting carton of the present invention, among the front plate, the rear plate, and the left and right side plates constituting the cylindrical body portion, the overlapping portions are continuously connected to the lower ends of the front plate and the rear plate via creases, Through the arc-shaped crease projecting upward at the lower end of each overlapped portion, the vertical width at the projecting portion of the arc-shaped crease is larger than one half of the lateral width of the side plate, and the vertical width at both ends is A bottom plate equal to one-half of the left and right width of the side plate is connected to each other, and a bonding piece symmetrical to the bottom plate is connected to the lower end of one bottom plate via an inner horizontal fold rule, and the lower end of the other bottom plate Tongue piece that has an inner bottom that is the same size as the bonding piece, and protrudes on both sides across the bottom plate and inner bottom with a length smaller than one-half the width of the side plate through the crease. And a blank plate in which outer vertical folding rules are provided at the centers of the left and right side plates, and the overlapping portions of the blank plates are folded inward. It is characterized in that it is bent and bonded to the inner surface of the front and rear plates, and the bonding piece is bent and the inner surface is adhered to the outer surface of the other bottom plate, so it can be gripped by hand from the folded state Apply pressure to the side plate, fold the bottom plate at the top of the overlapping section and close the bottom in a flat state, so that the part from the lower end of the box to the top of the overlapping section becomes a leg above the bottom plate Since it becomes a container shape with self-supporting property to support the storage part, and the tongue pieces that are connected to both sides across the other bottom plate and the inner bottom part enter between the bottom forming part and the side plate, This completes the bottom with a high degree of sealing. Therefore, even if foods with a large amount of oil or sauce are stored, it is possible to prevent the oil and sauce from leaking out from the gaps at the bottom, so that hands and the like are not soiled.

  And if both sides extending over the other bottom plate and the inner bottom are shaped to protrude outward, this side portion will push the side plate from the inside when the bottom is formed, so that the gap between the side plate is reliably closed. The sealing property becomes higher.

  In addition, if a crease that crosses the center across the other bottom plate and the inner bottom is provided, the center of the bottom is lowered when the other bottom plate and the inner bottom are pressed, and this lowered portion serves as an oil receiver or a saucer receiver. Demonstrate the effect.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an example of a self-supporting carton according to the present invention, and FIG. 2 is a development view of a blank plate forming the self-supporting carton of FIG.

  A blank board A1 forming the self-supporting carton A of FIG. 1 is obtained by punching a paperboard into the shape of FIG. As shown in the figure, this blank A1 has a side plate 1, a front plate 2, a side plate 3, a rear plate 4, and a sticking piece 5 arranged in order through a crease, and is respectively provided at the lower ends of the front plate 2 and the rear plate 4. The overlapping portions 6 and 7 are continuously connected through the creases, and the bottom plates 8 and 9 are continuously connected to the lower ends of the overlapping portions 6 and 7 via the arc-shaped creases a and b protruding upward. In addition, a laminated piece 10 symmetrical to the bottom plate 9 is connected to the bottom plate 8 through an inner transverse ruled line c, and an inner bottom portion 11 having the same dimensions as the laminated piece 10 is extended to the lower end of the bottom plate 8. Tongue pieces 12 are connected to both sides of the bottom 11 via folding lines d and e, and outer vertical folding lines f and g are provided at the centers of the side plates 1 and 3, respectively.

  Here, the bottom plates 8 and 9 and the bonding piece 10, the vertical width B of the arc-shaped portion of the inner bottom portion 11 is larger than half of the left and right width C of the side plate 1, and the bottom plates 8 and 9 and the bonding piece 10, the vertical width D at both ends of the inner bottom 11 is equal to one half of the lateral width C of the side plate 1. Further, the protruding length E of the tongue piece 12 is smaller than half of the lateral width C of the side plate 1.

  Further, in this embodiment, both sides extending over the bottom plate 8 and the inner bottom portion 11 are formed to project outward. That is, each of the creases d and e has a shape protruding in a “<” shape. Further, a crease h that crosses the center across the bottom plate 8 and the inner bottom portion 11 is provided.

  In making the self-supporting carton A, first, the overlapping portions 6 and 7 of the blank plate A1 in FIG. 2 are attached to the inner surfaces of the front plate 2 and the rear plate 4 while being bent along the creases, respectively, The sticking piece 10 is folded over the outer surface of the bottom plate 9 along the crease c to obtain the state shown in FIG.

  Next, the inner surface of the bonding piece 10 is adhered to the outer surface of the bottom plate 8 while the side plate 3 is folded in two along the outer longitudinal folding rule g. Subsequently, the side plate 1 is stuck to the inner surface of the sticking piece 5 with the portion 1a outside the outer vertical folding ruled line f so as to be in the folded state of FIG. The self-supporting carton A is stored and transported in this folded state, and is brought into the assembled state shown in FIG. 1 when the french fries are stored at the store.

  In the assembled state of FIG. 1, the folded state shown in FIG. 4 is grasped by hand, and the portions of the outer vertical folding lines f and g on the side plates 1 and 3 are pressed inward. When the pressing force starts to be applied in this manner, the front plate 2 and the rear plate 4 start to move back and forth, and the bottom plates 8 and 9 start to bend while being bent along the arc-shaped folds a and b. At the same time, the bonding piece 10 attached to the bottom plate 8 starts to be pulled away from the bottom plate 9 by being pulled by the bottom plate 8, and the bottom plate 9 and the bonding piece 10 start to incline in a mountain shape on both sides of the inner horizontal folding ruled line c. Further, the inner bottom portion 11 starts to be inclined on the extended surface of the bottom plate 8 together with the bottom plate 8. At this time, the tongue piece 12 connected to both sides extending over the bottom plate 8 and the inner bottom portion 11 is pushed by the side plates 1 and 3 and bent inward at the creases d and e, while the bottom plate 9 and the bonding piece 10 It begins to enter between the side edge and the side plates 1 and 3.

  Subsequently, if the outer longitudinal folding lines f and g of the side plates 1 and 3 are further pressed inward, the front plate 2 and the rear plate 4 are respectively straight until the side plates 1 and 3 hit the bottom or the like. Although it moves back and forth, the vertical width B of the arc-shaped portion such as the bottom plate 8 is larger than half of the left and right width C of the side plate 1, and there is friction between the tongue piece 12 and the side plates 1 and 3. Therefore, the bottom plate 8 and the inner bottom portion 11 are inclined before the arcuate edge of the inner bottom portion 11 comes into contact with the inner surface of the rear plate 4, and a gap is formed between the inner bottom portion 11 and the bottom plate 9. It becomes halfway.

  Therefore, a pressing force is applied to the bottom plate 8 and the inner bottom portion 11 by pushing down the vicinity of the center of the boundary between the bottom plate 8 and the inner bottom portion 11 with a fingertip. Then, the tongue pieces 12 on both sides firmly enter between the side edges of the bottom plate 9 and the bonding piece 10 and the inner surfaces of the side plates 1 and 3, and the inner bottom portion 11 and the bottom plate 9 are in close contact with each other so that there is no gap. The bottom plate 8, the inner bottom portion 11 and the bottom plate 9, and the bonding piece 10 are stretched in the form of a curved surface projecting downward. At the same time, the lower portions of the front plate 2 and the rear plate 4 also have a curved surface shape protruding outward, and the bottom plate 8, the inner bottom portion 11, the bottom plate 9, and the bonding piece 10 are firmly sandwiched. As a result, the bottom of the box is firmly closed.

  By the above operation, the bottom of the box is firmly closed by the curved curved bottom plates 8 and 9 and the bonding piece 10 and the inner bottom 11 protruding downward, and is raised by the height of the arc-shaped crease a. It becomes a state. Further, the portions below the arcuate creases a and b are below the bottom plates 8 and 9 and the bonding piece 10 and the inner bottom portion 11 and are reinforced by the overlapping portions 6 and 7. Therefore, the part below the arc-shaped creases a and b serves as a leg for supporting the entire box, and the box is provided with independence.

  As shown in FIG. 5, the box body thus provided with self-supporting properties has tongue pieces 12 provided on both sides extending over the bottom plate 8 and the inner bottom portion 11 between the bottom portion forming portion and the side plates 1 and 3. Since the gap is closed by this, the bottom portion having a high degree of sealing is completed. Moreover, since both sides extending over the other bottom plate 8 and the inner bottom portion 11 are projected outwardly, the side portions push the side plates 1 and 3 from the inside to completely open the gap between the side plates 1 and 3. Since it is closed, the sealing performance becomes higher. Further, since the crease h is provided across the center across the bottom plate 8 and the inner bottom portion 11, the bottom center is lowered when the vicinity of the center of the boundary between the bottom plate 8 and the inner bottom portion 11 is pushed down with a fingertip. Thus, the part lowered by the crease h serves as an oil receiver or a saucer receiver.

  In use, it is used not only for storing french fries and chicken nuggets in the self-supporting carton A assembled as described above, but also for storing foods with a large amount of oil or sauce. In the case where the latter food is stored, the self-supporting carton A has a gap formed between the bottom forming portion and the side wall closed with a tongue piece, and the bottom portion has a high degree of sealing. The sauce is prevented from leaking out and the tray and hands are not soiled.

  As described above, the embodiment of the present invention has been described in detail with examples. However, the self-supporting carton according to the present invention is not limited to the above-described embodiment at all, and various modifications can be made without departing from the spirit of the present invention. Needless to say, it is possible to make changes.

  For example, in the above example, both sides extending over the other bottom plate and the inner bottom are shaped to project outward, and the creases on both sides are shaped like a “<”, but are arcuate. It is good also as a shape protruding.

  In the above example, a crease is provided that crosses the center across the other bottom plate and the inner bottom in order to serve as an oil receiver or a saucer. However, this crease is not always necessary. Absent. Whether it is provided or not can be determined according to the food to be stored.

It is a perspective view which shows an example of the self-supporting carton which concerns on this invention. It is a top view which shows the blank board which forms the self-supporting carton of FIG. 1 in the state seen from the inner surface side. It is a top view which shows the state in the middle of the assembly of the self-supporting carton of FIG. It is a top view which shows the state in the middle of the assembly of the self-supporting carton of FIG. It is a perspective view which shows the assembled self-supporting carton in the state which can understand an inside.

Explanation of symbols

A Self-supporting carton A1 Blank plate 1 Side plate 1a The portion of the side plate 1 outside the outer vertical folding line f 2 Front plate 3 Side plate 4 Rear plate 5 Bonding piece 6, 7 Superposition part 8, 9 Bottom plate 10 Bonding piece 11 Inner bottom part 12 Tongue pieces a, b Arc-shaped creases c Inner horizontal folds d, e Folds f, g Outer vertical folds

Claims (3)

  Among the front plate, the rear plate, and the left and right side plates constituting the cylindrical body portion, the overlapping portions are connected to the lower ends of the front plate and the rear plate through the creases, respectively, and the upper ends of the overlapping portions are arranged upward. Through the projecting arc-shaped crease, the vertical width of the projecting portion of the arc-shaped crease is larger than one half of the lateral width of the side plate, and the vertical width at both ends is half of the lateral width of the side plate. A base plate equal to 1 is connected to each other, and a base plate symmetrical to the base plate is connected to the lower end of one base plate via an inner horizontal fold rule, and the same size as the base piece is attached to the lower end of the other base plate. Extending the inner bottom part, and connecting the tongue pieces projecting with a length smaller than one half of the left and right width of the side plate through creases on both sides extending from the bottom plate to the inner bottom part, The inner surface of the front and rear plates is made of a blank plate having an outer vertical fold ruled at the center of each side plate, and each overlapping portion of the blank plate is folded inward. As well as adhesive, respectively, self-supporting carton, characterized by comprising adhered to the inner surface to the outer surface of the other of the bottom plate by bending the Hagohen.   The self-supporting carton according to claim 1, wherein both sides extending to the other bottom plate and the inner bottom portion are projected outward.   The self-supporting carton according to claim 1 or 2, further comprising a crease that crosses the center across the other bottom plate and the inner bottom.

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