JP2019177890A - Lidded paper container - Google Patents

Abstract

A single member formed in a paper container has a plurality of functions to improve convenience. A paper container is formed of one piece of cardboard, and includes a container body, and a lid plate partially connected to an upper edge of the container body and opening and closing an upper opening of the container body. ing. The cover plate 16 is provided with a flap 16a which is connected to the leading edge of the cover plate 16 and is inserted into the container body when the cover plate 16 is closed. The container main body is connected to the upper edge of the front side plate 12 of the container main body where the flap 16a is located when the lid plate 16 is closed, and is folded along the upper edge. And a lever piece 21 defined by a pair of cuts K1 formed at the upper part of the front side plate 12 of the container body and a fold line L1 connecting the tips of the pair of cuts K. . [Selection diagram] FIG.

Description

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

  A lid lock is known as one of various devices applied to a paper container. Patent Document 1 forms a locking piece that protrudes outward from the leading edge of the lid plate, and forms a cut in the front plate where the leading edge of the lid plate overlaps when the lid plate is closed. The paper container which latches a cover board simply by inserting a stop piece into a notch is described.

Japanese Patent No. 6191864

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

  It is an object of the present invention to provide a single member formed on a paper container with a plurality of functions and improve convenience.

  A paper container with a lid according to a first aspect of the present invention is a container body formed of a single cardboard, and an opening / closing surface part (lid) that is partially connected to the upper edge of the container body and opens and closes the upper opening of the container body. A plate), and the opening / closing surface portion includes a flap that is connected to a tip edge of the opening / closing surface portion and is inserted into the container body when the opening / closing surface portion is closed, and the container body includes the opening / closing surface portion. A multi-functional piece that is connected to the upper edge of the wall surface of the container body where the flap is located when the flap is closed, and is folded along the upper edge of the wall surface, and both side edges of the multi-functional piece. And a lever piece defined by a pair of cuts formed in the upper portion of the wall surface portion of the container main body and a fold line connecting the tips of the pair of cuts.

  According to this invention, the lever piece defined by the fold line connecting the tips of the pair of cut pieces formed on the wall surface portion of the container body and the pair of cut pieces is outwardly folded (formed on the wall surface portion of the container body). And can be rotated downward by a shallow angle around the fold line. The lever piece falls downward on the outer side of the wall surface of the container body with the fold line as the axis of rotation. Since the multi-functional piece is connected to the lever piece, if the lever piece is tilted outward, the multi-functional piece can be moved accordingly.

  In one embodiment, the protruding length of the multi-functional piece is longer than the protruding length of the flap, and the multi-functional piece is folded inward along the upper edge of the wall surface and overlapped with the lever piece. And the lever piece. When the lever piece is tilted outward in this state, the multi-functional piece that overlaps the lever piece rises upward by the tilted lever piece inside the container body (the folding formed on the wall surface of the container body). Rotated by a shallow angle upward about the line). Since the protruding length of the multi-functional piece is longer than the protruding length of the flap, the leading edge of the flap is pushed upward by the multi-functional piece that rises upward, and the open / close surface portion connected to the flap is flipped upward. In this way, the open / close surface can be easily opened (one-touch open) simply by tilting the lever piece.

  Preferably, a slit is formed at a 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 multi-functional piece described above can be used as a lock for fixing the open / close surface portion to the container body.

  In one embodiment, an adhesive or an adhesive is provided on the back surface of the multi-functional piece, and the multi-functional piece is bonded to the outer surface of the opening / closing surface portion. By attaching the multi-functional piece to the outer surface of the opening / closing surface portion in the initial state (a state where the opening / closing surface portion has never been opened), unopened confirmation (virginity) at the point of sale can be imparted.

  When the multifunctional piece peeled off from the opening / closing surface is picked and pulled to the side (folded), not only the multifunctional piece but also the lever piece is pulled outward (folded). Since the flap connected to the leading edge of the opening / closing surface portion inside the lever piece is greatly exposed, the opening / closing surface portion can be opened easily by placing a finger on the exposed flap.

  The paper container with a lid according to the present invention can also be defined as follows. That is, the lid-equipped paper container according to the second invention is a container body formed from a single cardboard and partly connected to the upper edge of the container body to open and close the upper opening of the container body. A surface portion (lid plate), the opening / closing surface portion is connected to the leading edge of the opening / closing surface portion, and includes a flap that is inserted into the container body when the opening / closing surface portion is closed. , A multi-functional piece that is connected to the upper edge of the wall surface of the container body where the flap is located when the open / close surface is closed, and is folded along the upper edge of the wall surface, and both sides of the multi-functional piece A pair of cuts formed in the upper part of the wall surface of the container body along each of the edges, and a fold line connecting the tips of the pair of cuts, and in the initial sealing state, the back surface of the multifunction piece is Bonded to the outer surface of the opening / closing surface portion, In the state, the multifunctional piece is folded inward along the upper edge of the wall surface part and inserted into a slit formed at the boundary between the opening / closing surface part and the flap, and in the second resealed 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 multi-functional piece can have a plurality of functions (initial sealing function, first resealing function and second resealing function), that is, the unsealed confirmation function (virginity confirmation function) by the initial sealing function ) Can be realized by the first reseal function and the one-touch open function by the second reseal function. Also, if the upper part of the wall part of the container body sandwiched between the pair of cuts is folded outward along the fold line, the flap at the tip of the opening / closing surface part on the lower side (inner side) is greatly exposed, so it is exposed The finger hook on the flap is improved and the opening / closing surface can be easily opened at the initial stage.

It is an expanded view of the cardboard which forms a paper container. It is a perspective view of the paper container of the state which opened the cover plate. It is a perspective view of the paper container of the state which closed the cover plate. It is a perspective view of the paper container of the state which inserted the multifunctional piece in the slit. It is a perspective view of the paper container of the state which folded the multifunctional piece in the paper container. It is a perspective view of a paper container when a cover plate is flipped up.

  Hereinafter, embodiments 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 single cardboard. The cardboard includes cardboard (cardboard), milk carton paper, drawing paper, kent paper, cardboard, etc., and may be so-called synthetic paper (laminated paper) or composite paper, or may be laminated (for example, laminated) with various thermoplastic resins. The basis weight of the cardboard 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. A one-dot chain line indicates a fold line that is folded in a valley when the paper container 1 is manufactured, and a two-dot chain line indicates a fold line that is folded in a mountain when the paper container 1 is manufactured. Preferably, fold line processing or crease processing is performed along the one- and two-dot chain lines in order to facilitate folding. FIG. 2 shows a paper container 1 made by folding a die-cut (die-cut) paper pattern (blank) and bonding (gliding) a necessary portion as shown in FIG. 1, with its upper surface opened. Show. FIG. 3 shows a perspective view of the paper container 1 in the initial sealed state with the upper surface closed.

  Referring to FIG. 1, the blank of the paper container 1 has a square bottom plate 11. The front side plate 12 and the rear side plate 13 are continuously extended in opposite directions from a boundary (a fold line indicated by an alternate long and short dash line) where the front and rear (front and back) of the bottom plate 11 correspond to each other. Similarly, the left side plate 14 and the right side plate 15 continuously extend in opposite directions from the boundary corresponding to the left and right sides of the bottom plate 11. These front side plate 12, rear side plate 13, left side plate 14 and right side plate 15 all increase in width as they move away from the bottom plate 11, so that when they are formed in the paper container 1, the upper side opens greatly. It has become.

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

  A lid plate (opening / closing surface portion) 16 is connected to the leading edge of the rear plate 13 (upper edge when assembled), and a flap 16a is continuously connected to the leading edge of the lid plate 16 on the side opposite to the above-mentioned connection location. Yes. The cover 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 a multi-functional piece 22 to be described below is formed at substantially the center of the boundary between the cover plate 16 and the flap 16a.

  Flaps 14b and 15b are also connected to the front end edges of the left side plate 14 and the right side plate 15, respectively.

  A substantially square multi-functional piece 22 is connected to a substantially central portion of the front end edge (upper edge when assembled) of the front plate 12 via a folding line L2. The width of the multifunctional piece 22 (the length between the left and right ends) is substantially equal to or slightly narrower than the length of the slit S described above.

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

  The protruding length of the multi-functional piece 22 (the length from the fold line L2 to the leading edge of the multi-functional piece 22) W2 is the protruding length of the flap 16a connected to the leading edge of the lid plate 16 (with the lid plate 16 and The length from the boundary to the tip edge of the flap 16a) is longer than W1. The technical significance of making the protruding length W2 of the multi-functional piece 22 longer than the protruding length W1 of the flap 16a will be described later.

  The cardboard (blank) that has been die-cut (die-cut) as described above is folded along its fold line (one-dot chain line and two-dot chain line), and the desired location is bonded to the shape shown in FIGS. Paper container 1 is produced.

  That is, the front and rear side plates 12, 13, 14, and 15 are erected with respect to the bottom plate 11, and the folded pieces 12a to 15a are pulled out and folded to form four web corners. The corner portions are bonded and bonded to the outer surfaces of the left side plate 14 and the right side plate 15, respectively. The web corners overlapped with the left and right plates 14 and 15 extend obliquely from the left and right ends of the lower edges of the left and right side plates 14 and 15 so as to approach each other, and change the direction in the middle to form an edge portion extending vertically. A substantially rectangular parallelepiped paper container 1 having an open top 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 leading edges (upper edges) of the left side plate 14 and the right side plate 15 are folded inward at a substantially right angle, and the lid plate 16 is bent substantially inward at a substantially right angle. And the flap 16a is inserted into the inner surface of the front plate 12. Finally, the multi-functional 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 cover plate 16. Referring to FIG. 3, an adhesive (not shown) having a weak adhesive force is provided on the back surface of multi-functional piece 22, and multi-functional piece 22 is lightly bonded to the outer surface of 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 unsealed confirmation (virginity confirmation) of the paper container 1 can also be performed by adhesion of the multi-functional piece 22. For example, a plurality of half-cut lines and half-cut lines for cutting only the surface layer of the paper may be formed on the back surface of the multi-functional piece 22 (the portion in contact with the outer surface of the cover plate 16). When initially opened, only the paper surface of the multi-functional piece 22 is peeled off, and the peeled paper surface remains adhered to the cover plate 16. This makes it easy to determine that the initial opening has been performed. Children's mischief at stores can be prevented, and safety as a food container can be improved.

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

  The multi-functional piece 22 is peeled off from the cover plate 16 and pulled to the side (diagonally downward) as it is, so that the lever piece 21 can also be pulled outward (folded) at the folding line L1. Since the flap 16a at the tip of the cover plate 16 inside the lever piece 21 is largely exposed, the exposed flap 16a can be easily hooked, and the cover plate 16 can be easily initially opened (the cover plate 16 is lifted). . Even the child or the elderly can easily open the cover plate 16 at the initial stage.

  A breaking line (half cut line, perforation, etc.) (not shown) is formed at the tip of the multi-functional piece 22 and the range from the breaking line to the tip of the multi-functional piece 22 is bonded to the outer surface of the cover plate 16 You may make it do. At the time of initial opening, the multi-functional piece 22 is split into two along the breaking line, and only the tip portion remains adhered to the lid plate 16.

  Once the multi-functional piece 22 is peeled off from the cover plate 16, the adhesive force of the multi-functional piece 22 is almost lost. When the paper container 1 once opened is resealed, the multi-functional piece 22 and the slit S formed at the boundary between the cover plate 16 and the flap 16a can be used. That is, as shown in FIG. 4, when the multi-functional piece 22 is inserted into the slit S, the upper opening of the paper container 1 is closed by the cover plate 16 and the cover plate 16 is easily closed by the multi-functional piece 22. The cover plate 16 cannot be opened unless the multifunctional piece 22 is fixed and removed from the slit S. When the multifunctional piece 22 is inserted into or removed from the slit S, the lever piece 21 can be tilted outward. By simply fixing the lid plate 16 using the multi-functional piece 22, the lid plate 16 is not easily opened when carrying the paper container 1 (so that the contents are not spilled). Can do. It is also effective in preventing child mischief.

  If the above-described simple fixing of the cover plate 16 is not required, the multi-functional piece 22 may be folded inside the paper container 1 so as to be along the inner surface of the front side plate 12, as shown in FIG. The folded multi-functional 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 16 a and the lever piece 21 at the tip of the lid plate 16.

  When the multi-functional piece 22 is folded as shown in FIG. 5, when the finger is put on the upper edge of the lever piece 21 and the lever piece 21 is tilted outward (downward), the lever as shown in FIG. The piece 21 rotates by a shallow angle around the folding line L1 as a rotation axis and is inclined downward. Inside the paper container 1, the multi-functional piece 22 overlapping the lever piece 21 is inclined obliquely upward. As described above, since the protruding length W2 of the multi-functional piece 22 is longer than the protruding length W1 of the flap 16a (see FIG. 1), the leading edge of the multi-functional piece 22 is the tip of the flap 16a inside the paper container 1. It is located below the edge. Therefore, the tip end of the flap 16a is pushed upward by the inclined multi-functional piece 22, and the cover plate 16 connected to the flap 16a is flipped upward. In this way, the lid plate 16 can be opened with a single touch by simply tilting the lever piece 21 downward.

  In the above-described embodiments, the paper container 1 having a substantially rectangular parallelepiped shape having the web corner portion is exemplified. However, the paper container is of a sack pasting type (for example, refer to Japanese Patent No. 4374692) or of an auto bottom type (for example, Japanese Patent Application Laid-Open No. 2012-111516). Further, the outer shape of the paper container is not limited to a rectangular parallelepiped shape, and may be a cylindrical shape, a triangular tube, a pentagonal tube, or other polygonal tube shapes.

1 Paper container
12 Front plate
13 Rear plate
14 Left side plate
15 Right side plate
16 Lid (opening / closing surface)
16a flap
21 Lever piece
22 Multifunctional piece K1 Notch S Slit L1 Folding line

Claims (5)

A container body formed from a single cardboard, and an opening / closing surface part partially connected to the upper edge of the container body to open and close the upper opening of the container body;
The opening / closing surface is
A flap that is connected to the leading edge of the open / close surface portion and is inserted into the container body when the open / close surface portion is closed;
The container body is
A multi-functional piece that is connected to the upper edge of the wall surface of the container body where the flap is located when the open / close surface is closed, and is folded along the upper edge of the wall surface; and both side edges of the multi-functional piece And a lever piece defined by a pair of cuts formed in the upper part of the wall surface portion of the container main body along each of them, and a fold line connecting the tips of the pair of cuts,
Paper container with lid. The protruding length of the multi-functional piece is longer than the protruding length of the flap,
The multi-functional piece is folded inward along the upper edge of the wall surface portion and overlapped with the lever piece, and is 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 open / close surface and the flap,
The multi-functional 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 multi-functional piece,
The multi-functional piece is bonded to the outer surface of the opening / closing surface portion,
The paper container with a lid according to claim 1. A container body formed from a single sheet of cardboard; and an opening / closing surface part partially connected to the upper edge of the container body for opening and closing the upper opening of the container body;
The open / close surface portion is provided continuously with a leading edge of the open / close surface portion, and includes a flap that is inserted into the container body when the open / close surface portion is closed;
A multi-functional piece continuously connected to the upper edge of the wall surface of the container main body where the flap is positioned when the opening / closing surface portion is closed, and the multi-functional piece folded along the upper edge of the wall surface portion; A pair of cuts formed in the upper part of the wall surface of the container body along each side edge of the piece, and a fold line connecting the tips of the pair of cuts;
In the initial sealing state, the back surface of the multifunction piece is bonded to the outer surface of the opening / closing surface portion,
In the first reseal state, the multi-functional piece is folded inward along the upper edge of the wall surface portion and inserted into a slit formed at a boundary between the opening / closing surface portion and the flap,
In the second reseal state, the multi-functional 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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