JP4719504B2 - Paper container - Google Patents

Description

  The present invention relates to a paper container, and more particularly to a paper container for storing powder such as a powder detergent, which has a strong locking function, has almost no stickiness of a knob piece, and has an excellent appearance.

As a paper container for household powder detergents and the like, a paper container formed by opening and closing a box body having an opening on the upper surface and a lid body covering the opening on the back side of the box body is widely used. Yes.
In such a paper container, since the knob piece is one or one folded, the load concentrates on the knob piece every time the lid is opened or the lid and the box are locked. There has been a problem that the locking function is lowered because the distal end portion or the proximal end portion has settled in a relatively short period of time. In addition, before the start of use, since the tab piece of the lid is fixed and sealed to the front of the box with an adhesive, there is a problem that if it is opened during use, a peeling mark remains on the front of the box and the appearance deteriorates. .

On the other hand, various proposals have been made for a paper container locking mechanism, but no satisfactory one has been obtained.
For example, in Patent Document 1, an engagement end is provided on the outer surface of the front plate of the box, the engagement piece protrudes from the front plate of the lid through a bent portion, and the engagement piece is put on the cover. A paper container is disclosed in which the engagement piece is engaged with the engagement end by bending the cover toward the inside of the lid.
However, the paper container of Patent Document 1 has a problem that the engagement force between the paper lid and the container body is insufficient, and the knob piece is easy to stick.

Further, in Patent Document 2, an engagement piece is cut into a knob piece at the center of the lower edge of the front plate of the lid, and between the left and right lower ends of the engagement piece and the left and right upper ends of the knob piece. A horizontal crease line is engraved so that the entire knob piece and engaging piece can be rotated. The front plate of the box is large enough to insert the engaging piece at a position facing the engaging piece of the lid. A paper container is disclosed in which an engagement hole is formed and inserted and locked in a hook.
However, in the paper container of Patent Document 2, since the end portion of the cut engagement piece is connected to the crease line, when the lid is gripped, the engagement piece of the lid and the box body is bent due to the container weight, There was a risk that the locking mechanism would be impossible or damaged due to tearing from the cut end.

JP 2002-347757 A Japanese Patent No. 3502631

  An object of the present invention is to provide a paper container that has a strong locking function between a lid and a box, has little stickiness of a knob piece, and has an excellent appearance.

The present invention is a paper container in which a box having an opening on the upper surface and a lid covering the opening are hinged on the back side of the box and formed to be openable and closable, the front plate of the lid the proximal portion formed by projecting the knob piece through, to the knob piece that faces located in front plate of the box body is provided with a separation portion which is divided by the score lines and the dotted portion, said The cut-out part has a point where the upper part of the main body is cut into a convex shape, the lower part is cut down and cut down, and the cut-out part is left in the form of a dot. The unit is connected to the front plate of the box by the part, and by fixing the knob piece and the separation part, the separation part is separated along the cut line when the lid is opened, and the engagement is integrated with the knob piece. The cover body is engaged with the box body by making the separation mark of the separation portion into an engagement hole. Providing the formed paper container to allow.

  Since the paper container of the present invention is the engagement piece integrated with the knob piece, the separation part cut off from the box, the lock function is strong, and the knob piece and the engagement piece are superposed. The appearance is excellent because there is almost no stickiness and no trace of peeling remains on the surface of the box.

  The paper container of the present invention is a paper container formed by hinge-connecting a box body having an opening on the upper surface and a lid body covering the opening on the back side of the box body so as to be freely opened and closed. The front plate of the box is formed by protruding a knob piece through the base end, and the front plate of the box is divided by a cut line and a dotted portion left in a dotted manner at a position facing the knob piece. When the lid is opened, the separation portion is separated along the cutting line to form an engagement piece integrated with the knob piece. By forming the separation mark of the part as an engagement hole, the box is formed so that it can be locked with the lid closed.

An embodiment of a paper container of the present invention will be described with reference to the drawings.
1-4, the paper container 10 of this invention consists of the box 11 and the cover body 12, and the box 11 has the opening 11E in the upper surface. The opening 11E is adhered and sealed with a sealing paper 13 with a certain width to the outer surface of the entire opening edge composed of the front plate 11A, the back plate 11B, and the both side plates 11C or the inner surface of the top plate 12D of the lid 12. In the distribution and storage stages, it is possible to prevent leakage of powder detergents and the like that are the contents.

The box body 11 is assembled by folding a single sheet of paper or a laminated material obtained by laminating a plastic film with paper as a main material from the viewpoint of environmental friendliness and incineration upon disposal. The paper to be used is not particularly limited, but for convenience of handling, it is preferable that the basis weight is 350 to 700 g / m ² and the thickness is 0.3 to 1.1 mm.
The box 11 is assembled by bending the above-described materials, and includes a front plate 11A, a back plate 11B, both side plates 11C, and a bottom plate 11D, and an opening 11E on the upper surface. In the case of the form of FIG. 1, the box 11 has a front plate 11 </ b> A, a back plate 11 </ b> B, and both side plates 11 </ b> C folded back and bonded inside at the upper end side.

The material of the lid 12 is preferably a single paper or a laminated material obtained by laminating a plastic film with paper as a main material, like the box 11.
The lid 12 is assembled by bending the above-described materials, and includes a front plate 12A, a rear plate 12B, both side plates 12C, and a top plate 12D. The lid 12 is provided with a hinge coupling portion 12E bonded to the back plate 11B of the box 11 on the rear plate 12B, and covers the opening 11E of the box 11.
As shown in FIG. 8, the lid 12 can be formed by extending the back plate 11B of the box 11, providing a hinge ruled line on the upper end side of the back plate 11B, and folding it back to the inside. In the case of this form, the box body 11 folds the front plate 11A and the side plates 11C inward at the upper end side and bonds them.

  A knob piece 20 is formed so as to protrude at a substantially central portion of the front plate 12A of the lid 12. When the box 11 and the lid 12 of the paper container 10 are not opened while the contents such as the powder detergent are accommodated in the box 11, the lid 12 is attached to the back surface of the knob piece 20. It is fixed to the separation portion 21 (see FIG. 4) of the front plate 11A of the box 11 by an adhesive or the like. The separation part 21 is divided into a front plate 11A of the box 11 by a cut line and a dotted part 32 until the use of the contents is started, and is connected to the front plate 11A of the box 11 by the dotted part 32. Yes.

When the knob piece 20 is picked up with a finger and lifted upward at the start of use, the knob piece 20 is subjected to a stress that rotates upward with the crease line 22 at the base end as a rotation center. When stress is applied to the knob piece 20 so as to rotate upward, the detaching portion 21 that is integrally fixed to the knob piece 20 by an adhesive or the like is cut off from the front plate 11A of the box 11 along the cut line. (See FIG. 4). At this time, since the separation part 21 is fixed to the back surface of the knob piece 20, the separation part 21 is integrated with the knob piece 20 simultaneously with the separation. The trace where the separation part 21 is separated from the box 11 becomes the engagement hole 31.
The separation part 21 integrated with the knob piece 20 functions as the engagement piece 19, and the lid 12 that can be opened and closed is closed with the hinge coupling part 12 </ b> E connecting the lid 12 and the box 11 as a pivot. The engagement piece 19 can be locked in the engagement hole 31.

As shown in FIGS. 2 and 6, the knob piece 20 of the lid body 12 is engaged in the vicinity of the base end or the crease line 22 (engagement portion between the engagement piece 19 and the engagement hole 31). A peephole 23 can be provided to visually recognize the locking state of the piece 19. The shape and size of the peephole 23 are not particularly limited, and a shape such as a trapezoid or a circle can be selected as appropriate in addition to a square and an ellipse as shown in FIGS. 2 and 6A and 6B.
Also, as shown in FIGS. 6 (a) and 6 (b), in order to make the knob piece 20 easy to pinch, a line 24 is provided near the tip of the knob piece 20 and the valley is folded, and the tip is bent outward. If it forms so, the knob piece 20 can be easily lifted with the crease line 22 as the center of rotation.
In FIG. 2, the lower edge of the front plate 12A of the lid 12 may be formed horizontally, but from the viewpoint of workability when storing a plurality of paper containers 10 in a large box, It is preferable to incline slightly upward from the part to both ends.

For the convenience of handling, the box body 11 or the lid body 12 may be provided with a gripping portion (not shown) such as a suspension handle or a handle. For example, the gripping part may be attached to both side plates 11C of the box 11 or may be attached to the outer surface of the side plates 12C or the top plate 12D of the lid body 12.
The material of the grip portion is not particularly limited, and similarly to the box body 11 and the lid body 12, a single sheet of paper or a laminated material obtained by laminating a plastic film with paper as a main material can be used. A thick sheet can also be used.

4 and 5 are schematic front views showing an example of the open state of the paper container of the present invention.
An engagement hole 31 exists in the front plate 11 </ b> A of the box 11. The engagement hole 31 is a hole formed in the trace when the separation part 21 is separated from the front plate 11 </ b> A of the box 11 when the paper container 10 is opened.
The separation part 21 is formed by a dotted part 32 in which the upper part of the main body of the separation part 21 is cut upward in a convex shape, and the lower part is cut downward and cut in a downward direction. It is connected to the front plate 11A of the box 11. The dotted portion 32 is preferably provided at 1 to 4 locations. From the viewpoint of facilitating the separation of the separation part 21, it is preferable to provide the dotted part 32 at a part of the lower part of the separation part 21 that is reduced in the downward direction, and more preferably two places symmetrically. . Furthermore, it is preferable that the dotted portion 32 is not formed near the lowermost end portion or the distal end portion of the main body of the separation portion 21.
Here, “the upper part of the main body is convex upward” of the separating portion 21 is a term including a convex shape, a mountain shape, an arc shape, an inverted V shape, and the like. Moreover, it is preferable that the lower part of the separation part 21 is formed in the V shape which protruded below, or the convex shape and circular arc shape below.

  In FIG. 4, the engagement hole 31 (a punch hole that is a trace of the separation portion 21) has an upper portion 31 a formed in a mountain shape, a lower portion formed in an arc shape below, and a lowermost end portion inverted V. It is formed in a letter shape. When the paper container 10 is in an unopened state, the inverted V-shaped apex of the separating portion 21 is left uncut by a point, and the separating portion 21 is connected to the front plate 11A of the box 11 as a dotted portion 32. ing. Since the separation part 21 is configured in this way, when the lid is opened at the start of use, the separation part 21 is a box along the cut line starting from the lowest end part (inverted V-shaped bottom part) of the main body. It is easily separated from the front plate 11A of the body 11 and is engaged with the engagement hole 31 as the engagement piece 19 integrated with the knob piece 20 of the lid 12 while being fixed to the knob piece 20 of the lid 12. To function.

From the viewpoint of enhancing the operability of the knob piece 20 and the locking function, it is preferable that the convex portion 19 a serving as a locking portion of the engagement piece 19 protrudes upward from the base end portion of the knob piece 20 and is fixed.
Further, when the paper container 10 is opened, in order to make it easy to separate the separating portion 21 fixed to the knob piece 20 from the front plate 11A of the box 11 using the knob piece 20 as a clue, It is preferable that it is formed inside the outer edge portion of the piece 20, and it is preferable that at least the tip of the outer edge portion of the knob piece 20 protrudes outside the separating portion 21.

  Thus, in the present invention, since the knob piece 20 and the engagement piece 19 cut off from the front plate 11A of the box 11 are polymerized via an adhesive or the like, the strength doubles, The base end portion of the knob piece 20 does not become sticky or damaged. Further, the engaging piece 19 is formed of a paperboard constituting the box body 11, and this paperboard is usually made of a thicker and more durable material than the paperboard of the lid body 12, and therefore the strength is increased more than the simple folding of the knob piece. be able to. Further, when the paper container 10 is opened, only the engagement holes 31 remain, and no peeling marks remain on the surface of the front plate 11A of the box 11 so that the appearance is excellent.

  In FIG. 5, the engagement hole 31 has a top portion 31a of the main body formed in a convex shape, a lower portion formed in a circular arc shape below, and is cut into two points at positions slightly apart from the bottom end to the left and right. The remaining portion is used as a dotted portion 32, and the separation portion 21 is connected to the front plate 11 </ b> A of the box 11. When the unopened paper container 10 is opened, the separation part 21 can be easily separated from the front plate 11A of the box 11 along the cut line, starting from the lowest end (arc-shaped apex) of the main body. And functions as an engagement piece 19 integrated with the knob piece 20 of the lid body 12.

FIG. 7 is a schematic diagram of a longitudinal section showing a locking portion between the lid 12 and the box 11.
The engagement piece 19 is fixed to the back surface of the knob piece 20. The engagement holes 31 are lined with inner folded plates 32a and 32c that are folded back and adhered to the front plate 11A of the box 11 with an upper end piece, and 32b that is expanded in a convex shape by embossing. Thereby, a clearance 33 into which the engagement piece 19 can be inserted is provided on the back surface of the engagement hole 31. The engagement piece 19 is inserted into this gap and engaged with the engagement end 31a of the engagement hole 31, and the lid 12 is locked to the front plate 11A of the box 11 and is firmly locked. Note that the inner folded plates 32a to 32c can be used instead of folding back from the front plate 11A of the box 11 by attaching a material such as separately prepared paper.
When opening the locked lid body 12, hold the knob piece 20 with a finger and lift the tip of the knob piece 20 upward slightly with the crease line 22 at the base end of the knob piece 20 as the center of rotation. When pulled, the engagement piece 19 naturally comes out of the engagement hole 31, and the cover 12 is unlocked.
The sizes of the knob piece 20 and the engagement piece 19 are not particularly limited, and can be set as appropriate from the viewpoints of the thickness of the material such as paper, the smoothness of operations such as locking and releasing, and the engagement strength. it can.

Since the paper container 10 of the present invention is configured as described above, the following effects can be obtained.
(1) The lid 12 and the box 11 can be easily locked, and the locking function is strong, so that the lid 12 and the box 11 are not torn from the proximal end portion or the like.
(2) Since the knob piece 20 and the engagement piece 19 separated from the box 11 are superposed, the strength is doubled. Further, since the engagement piece 19 is formed of a paperboard constituting the box body, and this paperboard can be made of a thicker and stronger material than the paperboard of the lid body 12, the settling around the knob piece 20 can be eliminated. .
(3) When opening at the start of use, the separation part 21 of the box 11 is cut off, and the trace becomes the engagement hole 31, and no peeling trace remains on the surface of the box 11, so the appearance is excellent.

  The paper container of the present invention can be used as a paper container for storing various powder particles, and in particular, household powder storing about 500 g to 2.5 kg, preferably about 1 to 2 kg of powder detergent. It can be suitably used as a detergent container.

It is a perspective view which shows the open state of a paper container. It is a front view which shows the closed state of a paper container. It is a rear view which shows the closed state of a paper container. It is a front schematic diagram showing an example of an open state of a paper container. It is a front schematic diagram which shows another form of the open state of a paper container. It is the schematic which shows the example of the knob piece of a cover body. It is a schematic diagram of the longitudinal cross-section which shows the latching | locking part of a cover body and a box. It is a perspective view which shows the cover open state of the paper container of another form.

Explanation of symbols

10. Paper container 11. Box 12. Lid 19. Engagement piece 20. Knob piece 21. Separation part 22. Folding ruled line 31. Engagement hole

Claims (4)

A paper container formed by opening and closing a box body having an opening on the upper surface and a lid body covering the opening on the back side of the box body so as to be openable and closable. The cutting piece is formed through a protrusion, and the front plate of the box is provided with a cutting portion separated by a cut line and a dotted portion at a position facing the knob piece, the cutting portion is The upper part of the main body is cut in a convex shape upward, the lower part is cut downward and cut, and the dotted part left in the middle of the reduced width is cut into a box, It is connected to the front plate of the body, and by fixing the knob piece and the separation part, when the lid is opened, the separation part is separated along the cutting line to form an engagement piece integrated with the knob piece, By making the separation mark of the separation part into the engagement hole, the lid can be locked to the box Forming a paper container so. The paper container according to claim 1 , wherein a lower portion of the separation portion is formed in a V shape or a convex or arc shape downward. The paper container of Claim 1 or 2 with which the convex-shaped part used as the latching | locking part of an engagement piece protrudes upwards from the base end part of a knob piece, and is fixed. The paper container according to any one of claims 1 to 3, wherein a peep hole is provided in the vicinity of the proximal end portion of the knob piece of the lid body so that the locking state of the engagement piece can be visually recognized.

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