JP7031440B2 - Paper container with lid - Google Patents

Description

The present invention relates to a paper container with a lid.

The lid lock is known as one of the various devices applied to the paper container. Patent Document 1 forms a locking piece protruding outward from the tip edge of the lid plate, and forms a notch at a portion of the front side plate where the tip edge of the lid plate overlaps when the lid plate is closed. A paper container that easily locks the lid plate by inserting the stop piece into the notch is described.

Japanese Patent No. 6191864

In Patent Document 1, the locking piece inserted into the notch is used only for locking the lid plate. It is convenient to give the locking piece not only the locking but also other functions.

An object of the present invention is to provide a single member formed in a paper container with a plurality of functions to improve convenience.

The paper container with a lid according to the first invention is an opening / closing surface portion (lid) formed of a single piece of thick paper, which is partially connected to the container body and the upper edge of the container body to open and close the upper opening of the container body. The opening / closing surface portion is provided with a plate), and the opening / closing surface portion is provided with a flap that is connected to the tip edge of the opening / closing surface portion and is inserted into the container body when the opening / closing surface portion is closed. When the flap is closed, it is connected to the upper edge of the wall surface of the container body where the flap is located, and is folded along the upper edge of the wall surface. Along with this, a pair of notches formed in the upper part of the wall surface of the container body and a lever piece defined by a fold line connecting the tips of the pair of notches are provided.

According to the present invention, a pair of notches formed on the wall surface of the container body and a lever piece defined by a folding line connecting the tips of the pair of notches are tilted outward (formed on the wall surface of the container body). It can be rotated downward by a shallow angle around the folded line). The lever piece tilts downward on the outside of the wall surface of the container body with the folding line as the axis of rotation. Since the multi-function piece is connected to the lever piece, if the lever piece is tilted outward, the multi-function piece can be moved accordingly.

In one embodiment, the protrusion length of the multifunction piece is longer than the protrusion length of the flap, and the multifunction piece is folded inward along the upper edge of the wall surface portion and overlapped with the lever piece, and the flap is overlapped with the lever piece. It is sandwiched between the lever piece and the above lever piece. When the lever piece is tilted outward in this state, the multifunctional piece overlapping the lever piece rises upward due to the tilted lever piece (folding formed on the wall surface of the container body). Rotated upward by a shallow angle around the line). Since the protruding length of the multifunction piece is longer than the protrusion length of the flap, the tip edge of the flap is pushed upward by the multifunction piece that rises upward, and the opening / closing surface portion to which the flap is connected is flipped upward. In this way, the opening / closing surface can be easily opened (one-touch open) simply by tilting the lever piece.

Preferably, a slit is formed at the boundary between the opening / closing surface portion and the flap, and the multifunctional piece is folded inward along the upper edge of the wall surface portion and inserted into the slit. The above-mentioned multifunctional piece can be used as a lock for fixing the opening / closing surface portion to the container body.

In one embodiment, an adhesive or an adhesive is provided on the back surface of the multifunctional piece, and the multifunctional piece is adhered to the outer surface of the opening / closing surface portion. By adhering the multifunctional piece to the outer surface of the opening / closing surface in the initial state (the opening / closing surface has never been opened), unopened confirmation (virginity) at the time of sale can be imparted.

When the multifunctional piece peeled off from the opening / closing surface is picked up and pulled sideways (folded), not only the multifunctional piece but also the lever piece is pulled outward (folded). Since the flaps connected to the tip edge of the opening / closing surface on the inside of the lever piece are largely exposed, the opening / closing surface can be easily initially opened by putting a finger on the exposed flaps.

The paper container with a lid according to the present invention can also be defined as follows. That is, the paper container with a lid according to the second invention is formed of a single piece of thick paper, and is partially connected to the container body and the upper edge of the container body to open and close the upper opening of the container body. The container body is provided with a surface portion (cover plate), the opening / closing surface portion is connected to the tip edge of the opening / closing surface portion, and the flap is inserted into the container body when the opening / closing surface portion is closed. , A multifunctional piece that is connected to the upper edge of the wall surface of the container body where the flap is located when the opening / closing surface is closed, and is folded along the upper edge of the wall surface, and both sides of the multifunctional piece. A pair of notches formed in the upper part of the wall surface of the container body along each of the edges and a folding line connecting the tips of the pair of notches are provided, and in the initial sealing state, the back surface of the multifunctional piece is It is adhered to the outer surface of the opening / closing surface portion, and in the first resealing state, the multifunctional piece is folded inward along the upper edge of the wall surface portion and inserted into a slit formed at the boundary between the opening / closing surface portion and the flap. In the second resealing state, the multifunctional piece is folded inward along the upper edge of the wall surface portion and sandwiched between the flap and the wall surface portion of the container body. The multifunctional piece can have multiple functions (initial sealing function, first resealing function and second resealing function), that is, the unopened confirmation function (virginity confirmation function) by the initial sealing function. ), The lock function can be realized by the first resealing function, and the one-touch open function can be realized by the second resealing function. Further, when the upper part of the wall surface of the container body sandwiched by the pair of notches is folded outward along the fold line, the flap at the tip of the opening / closing surface portion on the lower side (inside) is largely exposed, so that it is exposed. The finger grip on the flap is improved, and the opening / closing surface can be easily initially opened.

It is a development view of the thick paper which forms a paper container. It is a perspective view of the paper container with the lid plate open. It is a perspective view of the paper container with the lid plate closed. It is a perspective view of a paper container in a state where a multifunctional piece is inserted into a slit. It is a perspective view of a paper container in a state where a multifunctional piece is folded in a paper container. It is a perspective view of the paper container when the lid plate is flipped up.

Hereinafter, examples of the paper container according to the present invention will be described in detail.

1 to 6 show a paper container according to an embodiment of the present invention. The paper container according to this embodiment is made of a piece of cardboard. The thick paper includes paperboard (cardboard), milk carton paper, drawing paper, Kent paper, corrugated cardboard, etc., and may be so-called synthetic paper (laminated paper), composite paper, or laminated (for example, laminated) various thermoplastic resins. The basis weight of the thick paper to be used can be appropriately designed according to the contents to be stored and the laminated thickness of the thermoplastic resin to be laminated, and for example, 150 to 600 g / m ² can be used.

FIG. 1 is a development view of a thick paper (blank) forming the paper container 1, and is a view of the inner surface of the paper container 1. The alternate long and short dash line indicates the fold line that is folded in a valley when the paper container 1 is made, and the two-dot chain line indicates the fold line that is folded in a mountain when the paper container 1 is made. Preferably, in order to facilitate bending, folding line processing or folding rule processing is performed along this one-point or two-dot chain line. FIG. 2 shows a paper container 1 created by bending a paper pattern (blank) that has been molded (cut out) as shown in FIG. 1 and adhering (gluing) necessary parts, with the upper surface opened. Shows. FIG. 3 shows a perspective view of the paper container 1 in the initial sealed state with the upper surface closed.

With reference to FIG. 1, the blank of the paper container 1 is provided with a square bottom plate 11. The front side plate 12 and the rear side plate 13 extend continuously in opposite directions from the boundary (folded line indicated by the alternate long and short dash line) at which the front and back (front and back) of the bottom plate 11 correspond. Similarly, the left side plate 14 and the right side plate 15 extend continuously in opposite directions from the boundary where the left and right sides of the bottom plate 11 correspond to each other. The widths of these front side plates 12, rear side plates 13, left side plates 14 and right side plates 15 increase as they move away from the bottom plate 11, so that when they are formed in the paper container 1, the upper side opens wide. It has become.

Approximately triangular folding pieces 12a are continuously formed on the left and right sides of the front plate 12. Similarly, substantially triangular folding pieces 13a, 14a, 15a are continuously formed on the left and right sides of the rear side plate 13, the left side plate 14, and the right side plate 15, respectively. Further, the adjacent fold pieces are connected to each other at the fold line extending outward from the corner of the bottom plate 11. A total of four web corners are formed in the paper container 1 by two adjacent folding pieces.

A lid plate (opening / closing surface portion) 16 is continuously provided on the tip edge (upper edge when assembled) of the rear side plate 13, and a flap 16a is continuously provided on the tip edge of the lid plate 16 on the opposite side of the continuous connection location. There is. The lid plate 16 has a rectangular shape and size that substantially matches the upper opening of the paper container 1. A slit S having a predetermined length for inserting the multifunction piece 22 described below is formed at substantially the center of the boundary between the lid plate 16 and the flap 16a.

Flaps 14b and 15b are continuously provided on the tip edges of the left side plate 14 and the right side plate 15, respectively.

Approximately square multifunctional pieces 22 are connected in series via the fold line L2 at the substantially central portion of the tip edge (upper edge when assembled) of the front side plate 12. The width of the multifunction piece 22 (the length between the left and right ends) is almost equal to or slightly narrower than the length of the slit S described above.

A pair of notches K1 extending shortly along both side edges (both ends of the folding line L2) of the multifunction piece 22 are formed on the upper part of the front side plate 12, and the tips of the pair of notches K1 formed on the front side plate 12 are formed on each other. It is connected by a fold line L1. The rectangular range 21 at the top of the front plate 12 adjacent to the multifunction piece 22 surrounded by the folding line L1 and the pair of notches K1 is hereinafter referred to as the lever piece 21.

The protruding length of the multifunction piece 22 (the length from the folding line L2 to the tip edge of the multifunction piece 22) W2 is the protruding length of the flap 16a connected to the tip edge of the lid plate 16 (with the lid plate 16). Length from the boundary of the flap 16a to the tip edge of the flap 16a) Longer than W1. The technical significance of making the protrusion length W2 of the multifunction piece 22 longer than the protrusion length W1 of the flap 16a will be described later.

The thick paper (blank) that has been die-cut as described above is bent along its folding line (dashed-dotted line and two-dot chain line), and the desired portion is adhered to the shape shown in FIGS. 2 to 3. Paper container 1 is created.

That is, the front, rear, left, and right side plates 12, 13, 14, and 15 are erected with respect to the bottom plate 11, and the folding pieces 12a to 15a are pulled out and folded to form four web corners, and two webs are formed. Adhere the corners to the outer surfaces of the left side plate 14 and the right side plate 15, respectively. The web corners overlapped on the left and right plates 14 and 15 extend diagonally from the left and right ends of the lower edges of the left and right side plates 14 and 15 in a direction approaching each other, and change the direction in the middle to form a vertically extending edge. A roughly rectangular parallelepiped paper container 1 having an open upper part as shown in FIG. 2 is formed. Since the web corner portion is formed, the paper container 1 hardly causes leakage even if the content contains water or oil.

The contents are put into the paper container 1 from the upper opening, and then the upper opening is also closed. That is, the flaps 14b and 15b connected to the tip edges (upper edges) of the left side plate 14 and the right side plate 15 are bent inward at a substantially right angle, and the lid plate 16 is bent at a right angle inward with the flap 16a bent at a right angle. And insert the flap 16a into the inner surface side of the front plate 12. Finally, the multifunction piece 22 is bent inward at a substantially right angle along the fold line L2 so as to be along the outer surface of the lid plate 16. With reference to FIG. 3, an adhesive having a weak adhesive force (not shown) is provided on the back surface of the multifunction piece 22, and the multifunction piece 22 is lightly adhered to the outer surface of the lid plate 16.

The paper container 1 is covered with a shrink film as needed and sold over the counter. In addition to the shrink film, the unopened confirmation (virginity confirmation) of the paper container 1 can be performed by adhering the multifunctional piece 22. For example, on the back surface of the multifunctional piece 22 (the part in contact with the outer surface of the lid plate 16), it is advisable to form a plurality of half-cut lines or half-cut lines that cut only the surface layer of the paper. When the package is initially opened, only the surface layer of the paper of the multifunction piece 22 is peeled off, and the surface layer of the peeled paper is left in a state of being adhered to the lid plate 16. This makes it easy to determine that the initial opening has been performed. It is possible to prevent children from being tampered with in stores and to improve the safety of food containers.

When taking out the contents, the multifunction piece 22 is first peeled off from the lid plate 16 and the lid plate 16 is opened. The lid plate 16 is rotated with the folding line at the boundary with the rear side plate 13 as a hinge. The contents are taken out from the upper opening (FIG. 2) of the paper container 1.

By peeling the multifunction piece 22 from the lid plate 16 and pulling it sideways (obliquely downward), the lever piece 21 can also be pulled outward (bent) at the folding line L1. Since the flap 16a at the tip of the lid plate 16 inside the lever piece 21 is largely exposed, it is easy to catch the exposed flap 16a with a finger, and the lid plate 16 can be easily initially opened (the lid plate 16 is lifted). .. Even children and the elderly can easily open the lid plate 16 at the initial stage.

A break line (half-cut line, perforation, etc.) (not shown) is formed at the tip of the multifunction piece 22, and the range from the break line to the tip of the multi-function piece 22 is adhered to the outer surface of the lid plate 16. You may try to do it. At the time of initial opening, the multifunctional piece 22 is torn in two along the break line, and only the tip portion is left in a state of being adhered to the lid plate 16.

Once the multifunction piece 22 is peeled off from the lid plate 16, the adhesive strength of the multifunction piece 22 is almost eliminated. When resealing the once opened paper container 1, the multifunctional piece 22 and the slit S formed at the boundary between the lid plate 16 and the flap 16a can be used. That is, as shown in FIG. 4, when the multifunction piece 22 is inserted into the slit S, the upper opening of the paper container 1 is closed by the lid plate 16, and the lid plate 16 is easily closed by the multifunction piece 22. The lid plate 16 cannot be opened unless the multi-functional piece 22 is fixed and pulled out from the slit S. When the multifunction piece 22 is inserted into and removed from the slit S, the lever piece 21 can be tilted outward. By simply fixing the lid plate 16 using the multifunction piece 22, the lid plate 16 should not be easily opened (to prevent the contents from spilling) when carrying the half-eaten paper container 1. Can be done. It is also effective in preventing tampering with children.

If the simple fixing of the lid plate 16 described above is not required, the multifunction piece 22 may be folded inside the paper container 1 and along the inner surface of the front plate 12 as shown in FIG. The folded multifunction piece 22 is not inserted into the slit S, is overlapped with the lever piece 21 inside the paper container 1, and is sandwiched between the flap 16a at the tip of the lid plate 16 and the lever piece 21.

When the multifunction piece 22 is folded as shown in FIG. 5, when a finger is placed on the upper edge of the lever piece 21 and the lever piece 21 is tilted outward (downward), the lever is tilted as shown in FIG. The piece 21 rotates about a folding line L1 as a rotation axis and tilts downward by a shallow angle, and inside the paper container 1, the multifunction piece 22 overlapping the lever piece 21 tilts diagonally upward. As described above, since the protrusion length W2 of the multifunction piece 22 is longer than the protrusion length W1 of the flap 16a (see FIG. 1), the tip edge of the multifunction piece 22 is the tip of the flap 16a inside the paper container 1. It is located below the edge. Therefore, the tip edge of the flap 16a is pushed upward by the inclined multifunction piece 22, and the lid plate 16 connected to the flap 16a is flipped upward. The lid plate 16 can be opened with one touch simply by tilting the lever piece 21 downward in this way.

In the above-described embodiment, the substantially rectangular parallelepiped paper container 1 provided with the web corner portion is exemplified, but the paper container is a sack-pasted type (see, for example, Japanese Patent No. 4374692) or an auto-bottom type (for example). , Japanese Unexamined Patent Publication No. 2012-11516). Further, the outer shape of the paper container is not limited to a rectangular parallelepiped shape, and may be a cylindrical shape, a triangular cylinder, a pentagonal cylinder, or any other polygonal cylinder shape.

1 Paper container
12 Front plate
13 Rear plate
14 Left board
15 Right side plate
16 Cover plate (opening and closing surface)
16a flap
21 Lever piece
22 Multi-function piece K1 Notch S Slit L1 Folded line

Claims (5)

It is provided with a container body made of a single piece of cardboard and an opening / closing surface portion that is partially connected to the upper edge of the container body to open and close the upper opening of the container body.
The opening and closing surface is
It is provided with a flap that is connected to the tip edge of the opening / closing surface portion and is inserted into the container body when the opening / closing surface portion is closed.
The above container body
A multifunctional piece that is connected to the upper edge of the wall surface of the container body where the flap is located when the opening / closing surface portion is closed and is folded along the upper edge of the wall surface portion, and both side edges of the multifunctional piece. It is provided with a pair of notches formed in the upper part of the wall surface of the container body along each of the above, and a lever piece defined by a folding line connecting the tips of the pair of notches.
Paper container with lid. The protruding length of the multifunctional piece is longer than the protruding length of the flap.
The multifunctional piece is folded inward along the upper edge of the wall surface portion, overlapped with the lever piece, and sandwiched between the flap and the lever piece.
The paper container with a lid according to claim 1. A slit is formed at the boundary between the opening / closing surface and the flap.
The multifunctional piece is folded inward along the upper edge of the wall surface and inserted into the slit.
The paper container with a lid according to claim 1. Adhesive or adhesive is provided on the back of the multifunctional piece,
The multifunctional piece is adhered to the outer surface of the opening / closing surface portion,
The paper container with a lid according to claim 1. It is equipped with a container body made of a single piece of cardboard, and an opening / closing surface portion that is partially connected to the upper edge of the container body and opens and closes the upper opening of the container body.
The opening / closing surface portion is connected to the tip edge of the opening / closing surface portion, and is provided with a flap that is inserted into the container body when the opening / closing surface portion is closed.
A multifunctional piece in which the container body is connected to the upper edge of the wall surface of the container body where the flap is located when the opening / closing surface is closed and is folded along the upper edge of the wall surface, and the multifunctional It is provided with a pair of notches formed on the upper part of the wall surface of the container body along each of both side edges of the piece, and a folding line connecting the tips of the pair of notches.
In the initial sealing state, the back surface of the multifunctional piece is adhered to the outer surface of the opening / closing surface portion.
In the first resealing state, the multifunctional piece is folded inward along the upper edge of the wall surface portion and inserted into a slit formed at the boundary between the opening / closing surface portion and the flap.
In the second resealing state, the multifunctional piece is folded inward along the upper edge of the wall surface portion and sandwiched between the flap and the wall surface portion of the container body.
Paper container with lid.

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