JP2007238130A - Paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper container having a locking mechanism in which an engagement piece of a lid is easily inserted in an engagement inserting part of a box body, an adhesive-applied portion is hardly carelessly peeled before unsealing, and a tab piece or the engagement piece is hardly broken during the unsealing or during the use thereafter. <P>SOLUTION: In the paper container, a lid for covering a top opening of a box body is hinge-connected with a back side plate of the box body, the tab piece is protruded from a front plate of the lid via a base end; an engagement piece is formed in a vicinity of the base end of the tab piece by a projecting notch line; and an engagement inserting part in which the engagement piece can be inserted in a lid closed state is formed in a front plate of the box body. An adhesive-applied part is provided, which sticks a lower portion of the engagement inserting part of the box body to the tab piece below the engagement piece of the front plate of the lid; and a half-cut line discontinuous from an edge of the tab piece is cut in an area above the adhesive-applied part in the tab piece and below the engagement piece. <P>COPYRIGHT: (C)2007,JPO&INPIT

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 is easy to lock a lid and a box.

2. Description of the Related Art As a paper container for household powder detergents and the like, a paper container is widely used that is formed so as to be openable and closable by connecting a lid that covers the top opening of the box to the back plate of the box.
In such a paper container, a locking mechanism is provided for locking the lid in place on the box so that the lid does not easily open and the contents spill or fall off. Is common.
The locking mechanism is formed by cutting an engagement piece into the knob piece of the lid, making the lid rotatable, forming an engagement insertion portion on the box front plate facing the engagement piece, and engaging the lid A so-called koze lock mechanism is known in which a piece is inserted and locked into an engagement insertion portion of a box body. (Patent Documents 1 to 3)

For example, in the cover lock mechanism of Patent Document 3, the lid and the adhesive application portion of the box body are between the knob piece and the box body of the entire surface plate, above the knob piece and from the engagement insertion portion of the box body. Since it is provided below, if it is peeled off when the knob piece is lifted up at the time of opening, a peeling piece extending upward from the adhesive application portion is generated by delamination of the surface layer of the lid. As a result, there is a problem that the engagement piece of the box is blocked by the peeling piece and the engagement piece of the lid is difficult to insert.
On the other hand, Patent Document 4 discloses one in which a half cut line is formed by making a round around the box front plate side of the adhesive application portion, but the box front plate side of the adhesive application portion is disclosed. The surface layer is easily peeled off with a small force, and may be peeled inadvertently before opening by impact.
In addition, Patent Document 4 discloses a structure in which a complete cut line is provided above the adhesive application portion of the knob piece. Since the distance between the cut line forming the piece and the entire cut line is short, the knob piece or the engagement piece is easily cut.

JP-A-9-150826 Japanese Patent Laid-Open No. 2004-323069 Japanese Patent Laying-Open No. 2005-200059 Japanese Utility Model Publication No. 6-80625

  According to the present invention, the engagement piece of the lid is easily inserted into the engagement insertion portion of the box, the adhesive application portion is not easily peeled off before opening, and the knob piece or the engagement at the time of opening or subsequent use It is an object of the present invention to provide a paper container having a lock mechanism in which a piece is hardly cut.

  The present invention is a paper container in which a lid covering an upper surface opening of a box body is hinged to the back plate of the box body, and formed by projecting a knob piece through a base end portion on the front plate of the lid An engaging piece is formed around the base end portion of the knob piece by a convex cut line, and an engaging insertion portion into which the engaging piece can be inserted in a closed state is formed on the front plate of the box. Forming an adhesive application portion for adhering a knob piece below the engagement insertion portion of the box and below the engagement piece of the front plate of the lid, and on the back surface of the front plate of the lid, Provided is a paper container in which an end edge of a knob piece and a discontinuous half-cut line are engraved in a region above the adhesive application portion of the knob piece and below the engaging piece.

  In the paper container of the present invention, the engagement piece of the lid is easy to be inserted into the engagement insertion portion of the box, and the adhesive application portion is not easily peeled off before opening, and the knob piece at the time of opening or subsequent use Or, since the engagement piece is difficult to cut, the locking mechanism of the lid and the box is reliable and highly durable. Moreover, since the half-cut line is formed on the back side of the knob piece, it is difficult to see from the front side, which is preferable in terms of aesthetics.

  The paper container of the present invention is formed by protruding a knob piece through the base end portion on the front plate of the lid, and an engaging piece is formed by a convex cut line around the base end portion of the knob piece, The front plate of the box is formed with an engagement insertion portion into which the engagement piece can be inserted in the closed state, and a knob piece below the engagement insertion portion of the box and below the engagement piece of the front plate of the lid And an adhesive application part for adhering to the edge of the knob piece on the back surface of the front plate of the lid above the adhesive application part of the knob piece and below the engagement piece. Characterized by engraved lines.

An embodiment of a paper container of the present invention will be described with reference to the drawings. FIGS. 1-9 is a figure which shows the example of embodiment of the paper container of this invention.
As shown in FIGS. 1 to 3, the paper container 10 of the present invention includes a box 11 and a lid 12, and the box 11 has an opening 11 </ b> E on the upper surface. The opening 11E is adhered and sealed with a certain width to the outer surface of the entire opening edge portion 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 by the sealing paper 13. It is possible to prevent leakage of contents such as powder detergent at the distribution and storage stage.
The paper container normally contains about 500 g to 2.5 kg, preferably about 1 to 2 kg of powder detergent or the like.

As the material of the box 11, from the viewpoint of environmental friendliness and incineration at the time of disposal, a single sheet of paper or a laminated body such as a three-layer structure in which paper is a main material and a plastic film is laminated as an inner layer can be used. Although there is no restriction | limiting in particular in the paper to be used, For convenience of handling, it is preferable that the basic weight is 350-700 g / m < ² > and thickness is 0.3-1.1 mm.
The box 11 is assembled by bending the material, 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 top 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 laminate in which a main material is paper and a plastic film is laminated, like the box 11.
The lid 12 is assembled by bending the material, and includes a front plate 12A, a rear plate 12B, both side plates 12C, and a top plate 12D. The lid 12 includes 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. 3, the lid 12 may be configured such that the back plate 11B of the box body 11 is extended, a hinge ruled line is provided on the upper end side of the back plate 11B, and the hinge 12 is folded back inward. In the case of this form, the front plate 11A and the both side plates 11C of the box 11 are usually folded inward at their upper end sides and bonded.
The box body 11 and the lid 12 can be provided with gripping portions (not shown) such as a handle and a handle (handle). For the convenience of handling, the gripping part can be attached to the surface of the side plates 11C of the box, the side plates 12C of the lid, the top plate 12D of the lid, and the like.

  A knob piece 22 is formed on the front plate 12A of the lid 12 so as to protrude through a base end (substantially central lower edge). In the unused state, the lid 12 is stuck and fixed to the adhesive application part 23 of the box 11 by a tack seal on the back surface of the knob piece 22 or an adhesive, and the adhesive application part 23 is peeled off when opened. Thus, the hinge coupling portion 12E that connects the lid 12 and the box 11 can be opened and closed as a pivot point. The engagement insertion portion 31 is formed at a position facing the engagement piece 19 formed on the knob piece 22 of the lid 12 when the lid is closed. On the back side of the upper edge portion 31 </ b> A of the engagement insertion portion 31, a gap is formed between the front plate 11 </ b> A and the front folded plate obtained by folding the front plate inward with the upper end piece. Yes. In FIGS. 1 and 3, a locking mechanism is provided that inserts and locks the engagement piece 19 into the gap.

  FIG. 4 is a diagram illustrating an example of a front view of the closed state of the paper container 10. The front plate 12 </ b> A of the lid 12 is engaged with the periphery of the proximal end portion 22 </ b> A of the knob piece 22 by a convex cut line. A piece 19 is formed and covers and hides the engaging insertion portion 31 formed on the front plate 11A of the box 11. The cut line is preferably convex upward so that the engagement piece 19 can be easily inserted into the engagement insertion portion 31. Further, the score line is extended as necessary to form an arcuate end portion 20. At the base end portion 19A of the engagement piece 19, that is, at the base end portion 22A of the knob piece 22, it is preferable to form the left and right fold ruled lines 21 of the engagement piece 19 substantially horizontally. It is preferable that the arcuate ends 20 are formed on the engaging piece 19 because it becomes a rotation supporting fulcrum when the knob piece 22 is rotated about the folding ruled line 21 and the smoothness of the rotation is ensured.

5 to 8 are enlarged schematic views showing examples of the engagement pieces 19 of the front plate 12A of the lid 12 of FIG. 4 and the back surfaces of the knob pieces 22 (the back surface of the portion A shown in FIG. 4).
In FIG. 5, a semi-cut line 24 discontinuous from the edge of the knob piece 22 is formed substantially horizontally and linearly above the adhesive application portion 23 of the knob piece 22 and below the engagement piece 19. Engraved. As a result, even if a peeling piece extending upward from the adhesive application part 23 is generated by delamination of the surface layer of the lid 12, the peeling piece is cut by the half-cut line 24. Since the portion 31 is blocked and the engagement piece 31 of the lid 12 is not easily inserted, the locking mechanism between the lid 12 and the box 11 is ensured. In order to cut the peeling piece more reliably, it is preferable to engrave the half-cut line 24 so as to cover the adhesive application part 23.
Moreover, it is preferable that the semi-cut line 24 is engraved only above the adhesive application portion 23 and not engraved below. This is to make it difficult for the adhesive application part 23 to peel off before opening.
Further, the half-cut line 24 is engraved at a position below the upper edge of the engagement insertion portion 31 of the box 11 in the closed state, so that the engagement piece 19 of the lid 12 is formed in the engagement insertion portion 31. This is preferable for easy insertion.

The shape of the half-cut line 24 is not limited to a straight line shape, and may take various shapes as long as the object of the present invention is achieved.
For example, FIG. 6 shows the half-cut line 24 engraved as a polygonal line, particularly jagged, FIG. 7 shows the half-cut line 24 as an arc, and FIG. 8 shows the half-cut line 24 as a hook. It is. Similarly, it may be a semi-oval shape, a wave shape, or the like.

FIG. 9 is a diagram illustrating an example of a front view of the box 11.
The engagement insertion part 31 in the present invention is not particularly limited as long as the engagement piece 19 of the lid 12 can be inserted therein. The engagement insertion portion 31 may be an engagement hole as shown in FIG. 9 or may be a slit shape. Further, the upper edge portion 31A of the engagement insertion portion 31 is not limited to a horizontal line shape, and may be a circular arc shape or a belt shape that protrudes downward, or an upwardly convex kamaboko shape, semicircular shape, or semi-oval shape. It may be.
In the present invention, from the viewpoint of easy insertion of the engagement piece 19 into the engagement insertion portion 31, the engagement insertion portion 31 is preferably an engagement hole, and the shape thereof is substantially as shown in FIG. Although it may be rectangular, various shapes such as an oval shape may be taken.

The two crease lines 21 of the engagement piece 19 are formed substantially horizontally from the arcuate end 20, but not from the lowermost end of the arcuate end 20 from the viewpoint of smoothness of the rotation operation, It is preferable to engrave substantially horizontally from a position slightly above the lowermost end. In other words, the bottom end of the arcuate end 20 is arcuate so as to be set at a position 0.5 to 3 mm, particularly 1 to 2 mm lower than the crease line formed substantially horizontally at both ends of the knob piece 22. It is preferable to form the end 20 and connect the crease line 21 in the vicinity of the side of the arcuate end 20.
The lower end edge of the front plate 12A of the lid 12 may be formed horizontally, but from the viewpoint of workability such as when storing a plurality of paper containers 10 in a large box, both ends from the center portion. It is preferable to incline slightly upward.

  The opening / closing mechanism of the lid 12 is as follows. In FIG. 4, when the knob piece 22 is picked up with a finger and lifted upward, the knob piece 22 rotates upward about the folding ruled line 21 as a rotation center. When the knob piece 22 is rotated upward, the engagement piece 19 formed integrally with the knob piece 22 is rotated downward with the folding line 21 as the rotation center, and the tip portion of the engagement piece 19 is engaged with the box body 11. Engage with the engaging end 31 </ b> A of the combined insertion portion 31. In this state, when the knob piece 22 is pushed downward so as to return to the original position, the engaging piece 19 moves upward, and the tip of the engaging piece 19 is the gap between the engaging insertion portion 31 and the back surface thereof. The lid 12 is locked to the box 11.

  As the adhesive used for the adhesive application part 23 according to the present invention, a hot melt adhesive or a cold glue adhesive is preferably used. Here, the hot-melt adhesive is a 100% solid adhesive that does not contain any organic solvent mainly composed of a thermoplastic resin. At normal temperature, it is solid or semi-solid, and is heated and melted to be applied and solidified by cooling to complete the adhesion. On the other hand, the cold glue adhesive is an emulsion type adhesive that can be used as it is without being heated.

Since the paper container of this invention is comprised as mentioned above, there exist the following effects.
(1) Even if a peeling piece extending upward from the adhesive application portion 23 is generated by delamination of the surface layer of the lid 12, the peeling piece is cut by the half-cut line 24. Since the portion 31 is blocked and the engagement piece 19 of the lid 12 is not easily inserted, the locking mechanism between the lid 12 and the box 11 is ensured.
(2) The half-cut line 24 is above the adhesive application part 23 and is different from the continuous one around the adhesive application part 23, so that the adhesive application part 23 is unlikely to be inadvertently peeled off before opening.
(3) Since the semi-cut line 24 is discontinuous with the edge of the knob piece 22, the knob piece 22 is not broken when opened, and the durability of the lock mechanism is high.
(4) Since the half-cut line 24 is engraved on the back surface of the knob piece 22, the half-cut line 24 is not visible from the surface of the front plate 12A of the lid 12 unlike the full-cut line.

It is a perspective view which shows the open state of a paper container. It is a rear view which shows the closed state of a paper container. It is a perspective view which shows the cover open state of the paper container of another form. It is a figure which shows an example of the front view of the closed state of a paper container. It is an enlarged schematic diagram which shows the example of the back surface of the A section of the front plate of a lid | cover. It is an expansion schematic diagram which shows another form of the back surface of the A section of FIG. It is an expansion schematic diagram which shows another form of the back surface of the A section of FIG. It is an expansion schematic diagram which shows another form of the back surface of the A section of FIG. It is a figure which shows an example of the front view of a box.

Explanation of symbols

10: Paper container 11: Box 11A: Front plate of box 12: Lid 12A: Front plate of lid 19: Engagement piece 19A: Base end of engagement piece 20: Arc-shaped end of engagement piece 21: Folding ruled line 22 of the engaging piece 22: Knob piece 22A: Base end portion of the knob piece 23: Adhesive application part 24: Half-cut line 31: Engagement insertion part 31A: Upper edge part of the engagement insertion part

Claims (3)

  A lid for covering a top opening of the box with a hinge connected to a back plate of the box, wherein the knob is formed by projecting a knob piece through a base end on the front plate of the lid, An engagement piece is formed around the base end portion of the piece by a convex cut line, and an engagement insertion portion into which the engagement piece can be inserted in a closed state is formed on the front plate of the box body, An adhesive application portion for adhering a knob piece below the engagement insert portion of the box and an engagement piece of the front plate of the lid, and bonding the knob piece on the back surface of the front plate of the lid A paper container in which an end edge of a knob piece and a discontinuous half-cut line are engraved in a region above the agent application part and below the engagement piece.   The paper container according to claim 1, wherein the engagement insertion portion is an engagement hole, and the half-cut line is in a position below the upper edge of the engagement insertion portion in a closed state.   The paper container according to claim 1, wherein the score line is convex upward.

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