JP2006160286A - Paper container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper container for a powder detergent or the like having a sure and strong locking mechanism. <P>SOLUTION: The paper container comprises a box equipped with an opening on its upper face and a lid covering the opening hinge-connected to the back face side of the box. In the paper container, a tab piece is projected and formed on the front face plate of the lid through a base end, an engaging piece with a circular arc-like end is shaped and provided by a cutting line on the vicinity of the base end of the tab piece, a folding ruled line is provided approximately horizontally from the circular arc-like end over the end of the tab piece, and on the front face plate of the box, an engaging inserting part into which the engaging piece can be inserted under a lid closing condition, is formed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a paper container, and more particularly to a paper container for storing powder such as a powder detergent and having a surely strong locking mechanism.

2. Description of the Related Art Conventionally, a paper container for a powder detergent or the like having a paper box body provided with a suspension is known (see, for example, Patent Document 1). This container uses a plastic-made suspension handle, which is processed separately from the box, attached to the body plate and the reinforcing plate with rivets on one side around the opening of the box and on the opposite side. .
This paper container is convenient to carry because it has a suspension, but after folding the unfolded base paper and assembling the box, it is necessary to rivet a synthetic resin suspension separately from the box to the box. There is a problem of poor productivity in the processing and packaging process of containers, and since it is attached to the main body of the box body, this handle is caught during storage in the large box, when taking it out, etc. There is a problem. Furthermore, since the suspension is made of a synthetic resin, there is a problem that it is troublesome because a separate disposal is required when the used container is discarded.

  As a means for solving the above problems, it is conceivable to provide a gripping part on the lid. However, when the lid is provided on the lid, the box and the lid are locked depending on the weight of contents such as powder detergent of 1 to 2 kg. There was a risk of tearing. In addition, it is conceivable to simply remove the gripping portion, but in this case as well, if the lid is grasped and lifted, there is a possibility that the locking portion between the box and the lid is broken.

On the other hand, various proposals have been made for a locking mechanism for a paper lid and a paper box. For example, an engagement end is provided on the outer surface of the front plate of the box body, and the engagement piece protrudes from the front plate of the lid through a bent portion, and the engagement piece is directed to the inside of the lid when the lid is put on the box body. There is known a paper container (see Patent Document 2) in which the engaging piece and the engaging end are engaged by being bent.
However, since the paper container of Patent Document 2 has a structure in which the engagement force between the paper lid and the container body is insufficient and the lid is not provided with a gripping portion, there is a risk that the paper container may be accidentally dropped when the paper container is carried. there were.
In addition, the engagement piece is cut into the knob piece at the center of the lower edge of the front plate of the lid, and a horizontal crease line is engraved between the left and right lower ends of the engagement piece and the left and right upper ends of the knob piece. The knob piece and the entire engagement piece are rotatable, and the front plate of the box has an engagement hole of a size that allows the engagement piece to be inserted at a position facing the engagement piece of the lid. There has also been proposed a paper container (see Patent Document 3) that is formed and inserted and locked in a hook.
However, in the paper container of Patent Document 3, 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 is separated from the cut end portion by the weight of the container. There was a risk of tearing and damage to the locking mechanism.

Japanese Utility Model Publication No. 63-97618 JP 2002-347757 A Japanese Patent No. 3502631

  It is an object of the present invention to provide a paper container that has a surely strong locking mechanism for a lid and a box and that does not tear an engagement piece even if the lid is grasped and lifted or a gripping portion is provided on the lid. And

  The present invention is a paper container formed by hinge-connecting a box having an opening on the upper surface and a lid covering the opening to the back side of the box, and a knob piece on a front plate of the lid via a base end portion An engagement piece having an arcuate end portion is formed by a cut line around the base end portion of the knob piece, and is substantially horizontally extending from the arcuate end portion to the end portion of the knob piece. A paper container is provided in which a folding ruled line is provided, 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.

  In the paper container of the present invention, the engagement piece having the arcuate end portion is formed on the lid, so that the lid and the box locking device are surely strong. Even if it provides, an engagement piece does not tear by the container weight.

  The paper container of the present invention is a paper container in which a box body having an opening on the upper surface and a lid that covers the opening is hinged to the back side of the box body, and a knob piece projects from the front plate of the lid. An engagement piece having an arcuate end portion is provided by a cut line around the base end portion of the knob piece.

An embodiment of a paper container of the present invention will be described with reference to the drawings. FIGS. 1-6 is a figure which shows an example of embodiment of the paper container of this invention, and FIGS. 7-8 is a figure which shows another form of the paper container of this invention.
As shown in FIGS. 1 to 3 and FIGS. 7 to 8, the paper container 10 of the present invention includes a box body 11 and a lid 12, and the box body 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.

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 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 FIGS. 7 to 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 inward. In the case of this form, the box 11 has the front plate 11A and both side plates 11C folded and bonded inside at the upper end side.
The lid 12 is preferably provided with a grip portion such as a handle or a handle (handle). 3 to 5 and 8, the lid 12 is provided with a hanging hand 14. For convenience of handling, the suspension 14 is preferably attached to the upper surface of the lid 12, but may be attached to both side plates 12 </ b> C of the lid, and is formed integrally with a mount that forms the lid. Also good.

The front plate of the lid 12 is formed by projecting a knob piece 22 through a base end portion. In the unused state, the lid 12 is adhered and fixed to the gluing portion 23 of the box 11 by a tack seal on the back surface of the knob piece 22 or an adhesive, and by peeling off the gluing portion 23 at the first use, The hinge coupling portion 12E that connects the lid 12 and the box 11 can be opened and closed with a pivot point.
The front plate 11A of the box 11 has an engagement hole of a size that allows the engagement piece 19 to be inserted at a position facing the engagement piece 19 (FIGS. 5 and 6) formed on the knob piece 22 when the lid is closed. Alternatively, a slit 31 (hereinafter collectively referred to as an engagement insertion portion 31) is formed. The engagement insertion portion 31 is lined with an inner folded plate that is folded back and adhered to the front plate 11A of the box 11 with an upper end piece, and the engagement piece 19 is inserted into the back surface of the engagement insertion portion 31. A gap is provided. The engagement piece 19 formed on the knob piece 22 is inserted into the gap and engaged with the engagement end 31 </ b> A of the engagement insertion portion 31, and the lid 12 is locked to the box body 11.
The engaging end 31A can be folded outward at the upper end of the front plate 11A regardless of the engaging insertion portion 31, and the engaging end 31A can be formed by the tip of the outer folded piece.

FIG. 4 is a plan view showing an example of the lid of the paper container. In FIG. 4, a hanger 14 is attached to the upper surface of the lid 12. The hanger 14 is composed of a substantially disc-shaped hanger body. Two semicircular cut lines 15 having a predetermined size are put in the center of the substantially disc-shaped suspension main body, and the crease line 16 extends from the end of the cut line 15 toward the outer peripheral edge of the suspension main body. The part surrounded by the two semicircular cut lines 15 and the four crease lines 16 is used as the sticking fixing part 17. The hanger 14 is formed so that the adhering and fixing portion 17 is firmly adhering and fixing to the upper surface of the lid 12 with an adhesive or the like, and the peripheral portion of the adhering and fixing portion 17 is raised and lowered as the hanger 14. .
The material of the suspension 14 is not particularly limited, but 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 and the lid 12.

FIG. 5 is a front view showing the closed state of the paper container, and FIG. 6 is an enlarged schematic view of part A of FIG.
The lid 12 is formed with a knob piece 22 protruding through a base end portion (substantially central lower edge) of the front plate (front plate 12A). An engagement piece having an arcuate end portion is formed by a cut line around the base end portion (substantially central portion) of the knob piece 22. More specifically, an upwardly protruding cut line is provided around the base end portion of the knob piece 22, and the end of the protruding cut line extends in a curved shape from below to above, An engagement piece 19 having an arcuate end 18 (U-shaped cut) is formed. Two folded ruled lines 20 are engraved substantially horizontally from the arcuate end 18 to the end of the knob piece 22. Both ends 18 of the arcuate shape of the engagement piece 19 serve as a rotation auxiliary fulcrum when the knob piece 22 is rotated about the crease line 20 as a fulcrum, and ensures smooth rotation.
The lower edge of the front plate 12A of the lid 12 may be formed horizontally, but from the viewpoint of workability when a plurality of paper containers 10 are packed and stored in a large box, from the center to both ends. It is preferable to incline slightly upward.

The sizes of the knob piece 22 and the engagement piece 19 are not particularly limited, and can be set as appropriate from the viewpoints of the thickness of a material such as paper, the smoothness of operations such as locking and releasing, and the engagement strength. . For example, in the case of a paper container (about 9 cm in length, about 15 cm in width, about 8 to 13 cm in height) such as a powder detergent of about 1 to 2 kg, it is preferable to set dimensions as follows in FIG.
Width a of the knob piece 22: preferably 45 to 65 mm, more preferably 50 to 60 mm.
Width b of the engagement piece 19: preferably 15 to 35 mm, more preferably 20 to 30 mm.
The width c of the crease line 20 is preferably 7 to 13 mm, more preferably 8 to 12 mm.
Width d of arcuate end 18: preferably 2-8 mm, more preferably 3-7 mm.
Height e of arcuate end 18: preferably 1 to 5 mm, more preferably 2 to 4 mm.
Height f of the knob piece 22: Preferably it is 10-20 mm, More preferably, it is 12-17 mm.
Height g of the engagement piece 19: preferably 3 to 10 mm, more preferably 4 to 9 mm.

  The two crease lines 20 are engraved approximately horizontally from the arcuate end 18, but from the viewpoint of smooth rotation operation, not from the lowermost end of the arcuate end 18 but from above the lowermost end. It is preferable to engrave substantially horizontally. In other words, the lowermost end of the arcuate end 18 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 18 and connect the crease line 20 in the vicinity of the side of the arcuate end 18.

The opening / closing mechanism of the lid 12 is as follows. 5 and 6, when the knob piece 22 is pinched with a finger and lifted upward, the knob piece 22 rotates upward with the crease line 20 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 20 as the rotation center, and the tip portion of the engagement piece 19 is engaged with the box body 11. Engage with the engagement 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 engagement piece 19 moves upward, and the tip of the engagement piece 19 is in the gap on the back surface of the engagement insertion portion 31. The lid 12 is securely locked to the box 11 by being inserted and fitted so as to be pushed.
When opening the locked lid 12, holding the knob piece 22 with a finger and lifting it upward to a substantially horizontal position, the engagement piece 19 naturally comes out of the engagement insertion portion 31 as it is, The lock of the lid 12 is released.

Since the paper container of this invention is comprised as mentioned above, there exist the following effects.
(1) When the lifting hand 14 is lifted, the load of the container weight is dispersed by the arc-shaped end portion 18 (U-shaped cut) of the engagement piece 19, and the engagement piece 19 can be prevented from being torn.
(2) Since the crease line 20 is not located at the cut end of the arcuate end portion 18, it can be prevented from tearing from the end portion of the cut line.
(3) When the knob piece 22 is lifted and locked with or released from the engaging insertion portion 31, the arcuate end 18 becomes a pivotal supporting point for the knob piece 22, and can be locked or released smoothly. .
(4) The hanger 14 (gripping part) is firmly fixed to the lid 12, and the engagement piece 19 is fitted into the engagement insertion part 31 and is securely and firmly locked. In addition, the lock mechanism is not damaged, and the handleability is excellent when stored in the large box or taken out.
(5) Since the suspension hand 14 (gripping part) is attached to the lid 12, there is no reduction in productivity in the processing and packaging process of the container.

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 side view which shows the cover open state after opening a paper container. It is a top view which shows an example of the cover of a paper container. It is a front view which shows the closed state of a paper container. It is an expansion schematic diagram of the A section of FIG. It is a perspective view which shows the open state of the paper container of another form. It is a side view which shows the open state after opening of the paper container of another form.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Paper container 11 Box 11E Opening 12 Cover Hanging hand 14 Cut line 15 Folding line 16 Sticking fixing part 17 Arc-shaped edge part 18 Engagement piece 19 Folding line 20 22 Knob piece 31 Engagement insertion part

Claims (4)

  A box having an opening on the upper surface, and a paper container formed by hinge-connecting a lid that covers the opening to the back side of the box, with a knob piece protruding through the base end of the front plate of the lid An engagement piece having an arcuate end portion is formed by a cut line around the base end portion of the knob piece, and a crease line is provided substantially horizontally from the arcuate end portion to the end portion of the knob piece. In addition, a paper container formed by forming an engagement insertion portion into which the engagement piece can be inserted in a closed state on the front plate of the box.   An upwardly protruding cut line is provided on the knob piece, and an end of the convex cut line extends in a curved shape from below to form an engagement piece having the arcuate end. The paper container of Claim 1.   The paper container according to claim 1 or 2, wherein the arc-shaped end portion is formed so that a lowermost end portion of the arc-shaped end portion is positioned lower than a crease line formed on the knob piece. The paper container according to claim 1, wherein a grip portion is provided on the paper lid.

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