JPH0834424A - Packaging container - Google Patents

Abstract

PURPOSE:To provide a packaging container which is held to the minimum number of the parts and is reduced in the material cost and in the number of the packaging operations and which is preferable from the aspect of environment. CONSTITUTION:In a packaging container which is formed of the material consisting mainly of pulp and has a lid body 12 freely pivotally attached to the container body 11 via a hinge part 13, a locking part 18 provided on the side edge of the lid body 12 is engaged with the mating locking parts 20 provided on the side edge of the container body 11 to lock the packaging container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container, and more particularly to a packaging container formed of a material containing pulp as a main raw material.

[0002]

2. Description of the Related Art Conventionally, a packaging box has been used to provide various electronic devices such as a tape recorder for distribution. A conventional packaging box is composed of a tray made of a synthetic resin molding and an exterior box. However, when a synthetic resin packaging tray is used, there is a problem that waste pollution causes dust pollution, and when incinerated, high temperature and soot are generated.

Therefore, as shown in FIG. 18, a tray-shaped container body 1 formed by molding pulp and a lid body 2 also formed by pulp are used to store products 3 in the container body 1. It was covered with the lid body 2 and housed in the sleeve-shaped exterior box 4.

[0004]

As described above, a conventional packaging container using pulp is provided with a tray-shaped container body 1 for storing products and a lid 2 mounted thereon, which are independent of each other. A sleeve-shaped exterior box 4 made of cardboard with the main body 1 and the lid 2 superposed on each other and having a design on the outer surface.
It was stored inside and used as an individual packaging container.

Therefore, the number of parts of the packaging container is at least three, and it takes time for the packaging container to be packaged using the outer box 4, the container body 1 and the lid 2. There was a flaw. That is, there is a limit in reducing the packaging work and the material cost.

The present invention has been made in view of such problems, and the number of parts for packaging is reduced,
Moreover, it is an object of the present invention to provide a pulp packaging container in which the packaging work is streamlined and the material cost can be reduced.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a packaging container which is formed of a material containing pulp as a main raw material, and the opening of the container body is openably and closably covered by the lid. Is connected to the container main body by a hinge so as to be openable and closable, and the lock part integrally connected to the lid is engaged with the locked part integrally provided on the container main body side, thereby closing the container. It is designed to lock with. By providing the lock portion rotatably with respect to the lid body via the hinge portion, the lid body is locked by rotating the lock portion about the hinge portion.

According to another aspect of the present invention, the engaging protrusions provided on the lid and the container are aligned with each other in a state where the lid closes the opening of the container main body, and both the aligned protrusions are engaged. The fitting projection is locked by a locking cylinder having a slit formed in a part in the circumferential direction. Further, in such a packaging container that is engaged by the lock portion and the locked portion or a packaging container that is locked by the locking cylinder, pad printing may be performed on the outer surface of the lid body or the container body, if necessary. I am trying to display it directly.

[0009]

According to the present invention, by engaging the lock portion with the locked portion on the container body side with the lid closed,
The lid is locked with the opening of the container body closed.

According to another aspect of the invention, when the lid closes the opening of the container body, the engaging projection is aligned with the engaging projection on the container body side. By mounting with a slit formed in a part in the circumferential direction, the lid body is locked in a closed state.

[0011]

1 to 4 relate to a packaging container according to a first embodiment of the present invention. This packaging container is composed of a tray-shaped container body 11 and a lid 12. And the lid 1
2 is rotatably connected to the upper end on the back side of the container body 11 via a hinge portion 13. A projecting portion 14 is provided at the bottom of the container body 11 and substantially at the center thereof so as to project upward.

A lock portion 18 having a recess inside is rotatably connected to an edge portion on the front end side of the lid body 11 via a hinge portion 19. The lock portion 18 locks the pair of locked portions 20 provided on the peripheral portion of the opening of the container body 11 so as to wrap it from the outside (see FIG. 11). The pair of locked parts 2
A pair of lock portions 18 may be provided corresponding to the locked portions 20 so as to receive and lock 0 separately.

Next, an apparatus for molding such a packaging container with pulp will be described. As shown in FIG. 5, a molding cup 41 is connected to a predetermined position of the turntable 40. . The bottom opening of the molding cup 41 is connected to the drainage pipe 42, and a support liquid injection port 43 is provided on the side of the drainage pipe 42.
A valve 44 is connected to the bottom of the drainage pipe 42, and a valve 45 is connected to the supporting liquid inlet 43.

A mold 48 is mounted on the molding cup 41. The mold 48 has an innumerable drainage port 49 so that water in the raw material liquid is removed. Further, a liquid injection cylinder 50 is connected to the upper portion of the molding cup 41. A raw material liquid 51 containing pulp is supplied through the liquid injection cylinder 50.

At another rotation position of the turntable 40, as shown in FIG. 6, the pressing sheet 5 made of an elastic material is used.
4 is held by a holding ring 55 to form a mold 48, and the pressing sheet 54 is used to finish the inner surface smoothly. A drain pipe 42 is also connected to the molding cup 41 that supports the mold 48.

Next, the operation of forming this packaging container from a material whose main raw material is pulp will be described. At a predetermined rotation position of the turntable 40, as shown in FIG. 5, the injection cup 50 faces the molding cup 41, and the injection cylinder 50 is sufficiently lowered to move the molding cup 41 and the injection cylinder 50 to each other. Make them adhere closely. In such a state, first, the valve 45 of the drainage pipe 42 connected to the lower portion of the molding cup 41 is opened to drain the support liquid from the support liquid inlet 43.
And the inside of the molding cup 41 is filled with the supporting liquid. This is to prevent the raw material liquid 51 from immediately coming out when it is poured from above.

After the supporting liquid is thus filled in the molding cup 41 through the drain pipe 42, the raw material liquid 51 is injected into the liquid injection cylinder 50 through the injection port 52. In this state, the valve 44 of the drain pipe 42 is operated to cause the raw material liquid 51 to flow down together with the supporting liquid. This flow-down operation may be a complete natural flow or a forced flow by forced suction.

When the raw material liquid 51 flows down together with the supporting liquid in this way, the liquid component in the raw material liquid 51 escapes from the drain port 49, and only the pulp component remains on the mold 48. In the case of a perfect paper product, the raw material components in the raw material liquid are pulp, cellulose and the like, but resins and other functional materials for improving physical properties may be included depending on the purpose.

After the raw material component containing pulp as the main component is in the state where the paper is drawn out on the mold 48 in this way, the turntable 40 is rotated to hold down the molding cup 41 as shown in FIG. The seat 54 is moved to the lower side. At the time of this movement, while removing the drainage pipe 42 in the original position,
Another drain pipe 4 waiting in advance at the moved position
Connect to 2.

After that, the pressing sheet 54 is attached to the holding ring 55.
Then, the mold 48 is gently lowered, and the upper portion of the mold 48 is closed by the holding sheet 54 as shown by the chain line in FIG.
After this, the valve 44 is opened with the valve 45 closed, and the inside of the drainage pipe 42 is vacuumed. Then, as shown in FIG. 7, the pressing sheet 54 made of an elastic material is adapted to press the pulp component from above while conforming to the shape of the pulp component extracted and deposited on the mold 48 by vacuum suction. Elastically deforms. If this state is maintained for a certain period of time and then vacuum suction is released, the upper surface of the pulp component extracted on the mold 48 will be sufficiently smooth. The lower surface of such pulp component is made sufficiently smooth by the surface of the mold 48. Therefore, such a container becomes a packaging container whose both surfaces are finished to be smooth.

The surface of such a packaging container is directly marked by pad printing. As shown in FIG. 8A,
The ink 59 contained in the ink reservoir 58 is taken out by the doctor 60, and the doctor 60 is moved on the printing plate 61, which is an intaglio plate, as shown in FIG. 8B, so that the recess 59 is filled with the ink 59 (FIG. 8C). ). Since the ink is removed by the doctor 60, the ink does not remain in the printing plate 61 except the recess 62.

Then, as shown in FIG. 8D, a transfer pad 63 made of, for example, silicon is used, and the pad 63 is superposed on the printing plate 61, whereby the ink 59 held in the recess 62 of the printing plate 61 is removed. As shown in FIG. 8E, it is transferred to the transfer pad 63 side. Therefore, by pressing such a transfer pad 63 against the upper surface of the lid 12 of this packaging container as shown in FIGS. 8F and 8G, pad printing is performed and a predetermined position of this packaging container, for example, A predetermined display is provided on the outer surface of the lid body 12. Such an indication may be, for example, a product model name, a trademark, or other indication.

In this way, as shown in FIG. 9, a tape recorder 30, a tape recorder 30, and the like are provided in the packaging container in which the lid body 12 is integrally molded with pulp through the hinge portion 13 on the container body 11.
Headphones 31, a charger 32, accessories 33, a manual 34, etc. are stored. The lid 12 is closed around the hinge portion 13 with these commodities and accessories stored in predetermined positions. Then, as shown in FIG. 10 and FIG. 11, a lock portion 18 provided at a tip portion of the lid body 11 via a hinge portion 19 is provided to the container body 1.
The lid 12 is locked in the closed state by engaging the pair of locked portions 20 on the first side so as to cover them.

As described above, the packaging container according to this embodiment is a packaging container made of a pulp-molded product, and includes a tray 11 for storing products and the like, and a hinge 13 on the back side of the tray 11. A lid-type molded container including a lid 12 that is continuously provided, wherein a locked portion 20 including a protrusion is provided on the front side of the tray 11, and the locked portion is provided on the front end side of the lid 12. A lock portion 18 engaged with 20 is provided rotatably via a hinge portion 19.

On the surface of the tray 11 or the upper lid 12, it is possible to print a display by pad printing as shown in FIG. 8 if necessary. Therefore, such a packaging container alone can be used as an individual packaging container.

According to such a packaging container, the number of parts can be reduced to one, so that the man-hours for packaging work and the material cost can be greatly reduced. Moreover, since it is formed from a material whose main raw material is pulp, it is very preferable in terms of environmental protection measures. Further, by directly printing the outer surface of the container, a packaging container having an image wrapping configuration that is not available in the past can be obtained.

Next, a second embodiment will be described with reference to FIGS. The basic configuration of the packaging container of this embodiment is the same as that of the first embodiment, and the container body 11 and the lid 12 are
And are connected to each other via the hinge portion 13.

The feature of this embodiment is as shown in FIG.
An engaging projection 24 having a semicircular cross section and closed at both ends is continuously provided at a portion on the front edge side of the container body 11, and a semicircular cross section is similarly formed on the front edge side of the lid body 12. That is, the engaging projection 25 having both ends closed is formed. A paper tube 26 as shown in FIG. 13 is used to lock the pair of engaging projections 24 and 25 in a state of being aligned with each other. A slit 27 is formed in a part of the paper tube 26 in the circumferential direction, and both ends of the slit 27 are notched to form a notch 28.

Therefore, in such a packaging container, the tape recorder 30, the headphones 31, the charger 32, and the accessory 3 are provided in the container body 11 as in the first embodiment.
3 and the manual 34 are stored in predetermined positions. Then, in this state, the lid body 12 is closed. Then, the semicircular engagement protrusion 25 of the lid 12 and the engagement protrusion 24 of the container body 11 are aligned with each other. Therefore, in such a state, the paper tube 26 having the slit 27 is mounted as shown in FIGS. 14 and 15 so as to receive the root portions of the engaging projections 24 and 25. Slit 27
When the paper tube 26 is completely attached to the outside of the engaging projections 24, 25 through the through, the result is as shown in FIG.
Thus, the lid 12 is locked in the closed state.

As described above, the pulp mold packaging container of the second embodiment has a container body 11 for containing the product.
A lid-type packaging container comprising a lid body 12 connected to the back side of the container body 11 via a hinge portion 13, and a semicircular engagement is provided at the front end portions of the container body 11 and the lid body 12. The joint projections 24 and 25 are provided. Then, the paper tube 26 having the slit 27 formed in a part in the circumferential direction is inserted from either one of the left and right ends of the engaging projections 24 and 25 so that the lid 12 is locked in the closed state. Is. Also, in such a packaging container, it is possible to use the container itself as an individual container by marking the surface with pad printing.

In such a packaging container, the number of parts is two, and the cost of packaging work and packaging material can be reduced. Further, both the packaging container and the paper tube 26 are mainly made of paper (pulp), and the packaging container can minimize environmental damage.

Next, a modification of the above embodiment will be described with reference to FIG. This modification is the same as the packaging container of the second embodiment, except that the engaging projection 24 of the container body 11 and the lid 1 are provided.
A concave portion is provided at the base portion of the engaging projection 25 of No. 2, and a handle hole 29 is formed in this concave portion. Therefore, the packaging container can be directly held by holding the handle hole 29, and the operability of handling can be remarkably improved. Moreover, since the paper tube 26 functions as a grip when held by hand, the structure has excellent durability.

[0033]

INDUSTRIAL APPLICABILITY The present invention relates to a packaging container which is formed of a material containing pulp as a main raw material and has a lid body integrally opened and closed via a hinge portion. The locked portion is engaged with a locked portion that is integrally provided on the container body side for locking.

Therefore, the number of parts of the packaging container is reduced to one, the cost of the packaging material can be significantly reduced, and the number of man-hours for packaging work can be reduced.
Further, the locking work on the lid side is rotatably connected to the lid side via the hinge part, whereby the workability of the locking is further improved.

According to another aspect of the present invention, the lid and the container body are provided with engaging projections so that the lid is aligned with each other with the opening of the container body closed, and a slit is provided at one end in the circumferential direction. The engaging projections aligned with each other by the locking paper tube are held and locked.

With such a construction, the number of parts of the packaging container can be set to two, the material cost can be reduced, and the number of working steps can be reduced. Further, since it is mainly composed of pulp, it is a preferable packaging container in terms of environmental protection.

In the above two inventions, by directly displaying the outer surface by pad printing, it becomes possible to use this packaging container as an individual package.

[Brief description of drawings]

FIG. 1 is an external perspective view of a packaging container according to a first embodiment.

FIG. 2 is a developed plan view of the same.

FIG. 3 is a developed side view of the same.

FIG. 4 is a rear view of the same closed state.

FIG. 5 is a vertical cross-sectional view of a molding apparatus that molds this packaging container.

FIG. 6 is a vertical cross-sectional view showing an apparatus for finishing this packaging container.

FIG. 7 is a vertical cross-sectional view showing a state where finishing is performed.

FIG. 8 is a longitudinal sectional view of a main part showing a step of pad printing.

FIG. 9 is an exploded perspective view showing a state in which articles are stored.

FIG. 10 is an external perspective view in a closed state.

FIG. 11 is a side view in a closed state.

FIG. 12 is an external perspective view of the packaging box of the second embodiment.

FIG. 13 is a perspective view showing a paper tube for locking.

FIG. 14 is an enlarged cross-sectional view showing the locking operation by the paper tube.

FIG. 15 is a perspective view showing a mounting operation of the paper tube.

FIG. 16 is an external perspective view of a packaging box locked by a paper tube.

FIG. 17 is an external perspective view of a modified packaging box.

FIG. 18 is an exploded perspective view of a conventional packaging container.

[Explanation of symbols]

 11 Container body 12 Lid body 13 Hinge part 14 Projection part 18 Lock part 19 Hinge part 20 Locked part 24, 25 Engaging projection part 26 Paper tube 27 Slit 28 Notch 29 Handle hole 30 Tape recorder 31 Headphone 32 Charger 33 Attached Item 34 Manual 40 Turntable 41 Molding cup 42 Drain pipe 43 Support liquid inlet 44, 45 Valve 48 type 49 Drain port 50 Injection cylinder 51 Raw material liquid 52 Injection port 54 Holding sheet 55 Retaining ring 58 Ink reservoir 59 Ink 60 Doctor 61 Printing plate (intaglio) 62 Recess 63 Transfer pad

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B65D 81/133

Claims (4)

[Claims] 1. A packaging container, which is formed of a material containing pulp as a main raw material, and in which an opening of the container body is openably and closably covered by a lid body, the lid body being integrally openably and closably connected to the container body. A packaging container, comprising: a hinge part, a lock part that is integrally connected to the lid body, and a locked part that is integrally provided on the container body side and that engages with the lock part. 2. The packaging container according to claim 1, wherein the lock portion is rotatably connected to an end portion of the lid body via a hinge portion. 3. A packaging container, which is formed of a material containing pulp as a main raw material and has an opening in a container body which is openably and closably covered by a lid body, wherein the lid body is openably and closably integrated with the container body. A hinge portion connected to the lid body, an engagement protrusion provided on each of the lid body and the container body so that the lid body is aligned with each other with the opening of the container body closed, and a circumferential direction A packaging container, each of which has a slit formed therein, and which holds a locking cylinder that holds the lid and the engaging projection of the container main body in alignment with each other. 4. The packaging container according to claim 1, wherein the outer surface of the lid or the container body is directly printed by pad printing.