JP5753441B2 - Paper folding box - Google Patents

Description

  The present invention relates to a paper folding box for storing food, for example.

  The conventional folding box can bend smoothly when folding the unfolded plate along the folding edge, and the outer edge of the folded part is not rounded so that the edge finish is beautiful and beautiful. There has been proposed one in which a V-shaped groove is formed along the folding edge (Patent Document 1).

JP 05-294342 A

  However, when an adhesive is applied to the inner surface of the V-shaped groove serving as the bent portion and the bent portion is bonded and fixed, when the inner surface of the V-shaped groove is superposed, excess adhesive is pushed out and the inner surface of the bent portion is Adhesive pushed out to the side corners will not stick out and will not look good, or the man-hour to remove this protruding adhesive will increase and decrease productivity, and the adhesive will not stick out. When the amount is reduced, there is a problem that the adhesive strength is lowered and the bonded portion is easily peeled off.

  The present invention solves such a conventional problem, can be smoothly bent along the concave groove provided as a folding edge at the time of assembly, and further, the outer side corner of the bent portion is not rounded and the edge is not rounded. Provided a paper folding box that has a beautiful finish that is effective, and has a good appearance without degrading the adhesive strength even when the bent part is bonded with an adhesive, and without the adhesive protruding. The purpose is to do.

  The gist of the present invention will be described with reference to the accompanying drawings.

In the paper folding box formed by bending the development plate material 1, the development plate material 1 in which the surface sheet 6 made of either a laminated paper made of paper and synthetic resin or metal, or a synthetic resin film is attached to both front and back surfaces. the concave groove 4 as the Orient along the boundary between the bottom plate 2 and the side plate portion 3 of provided, the concave groove 4, the inner surface 4a of the bottom plate portion 2 side and the inner surface 4b of the side plate 3 side was formed into a curved surface or a V-shaped surface becomes concave people inwardly respectively, by bending the standing direction the side plate portion 3 relative to the bottom plate 2, the bottom plate portion 2 of this concave groove 4 When the edge portion 2a on the side and the edge portion 3a on the side plate portion 3 side are brought into contact with each other, the edge portion 2a on the bottom plate portion 2 side and the side plate are disposed between the inner surfaces 4a, 4b of the concave groove portion 4 facing each other. From the upper end of the inner surfaces 4a and 4b that come into contact with the edge 3a on the side of the portion 3 to the bottom top of the groove 4 With adhesive reservoir portion 5 of the wide and becomes shaped as the central portion is configured to so that is formed over the lower end, a structure of forming a flat surface as the folding strip portion 10 on the Sokoitadaki portion, with respect to the bottom plate 2 The side plate portion 3 to be bent is configured by providing a covering layer 7 of any one of a sheet material, transfer ink, a synthetic resin coating, or an impregnation liquid on the cut upper end surface 3b, and the side plate portion 3 is the bottom plate portion. When the unfolded plate member 1 is formed in a box shape by bending in a standing direction with respect to 2, the edge portion 2a on the bottom plate portion 2 side and the edge portion 3a on the side plate portion 3 side of the concave groove portion 4 are formed. The paper folding box is characterized in that a waterproof coating 9 having a waterproof property such as an oil film or a synthetic resin film is provided on the abutting inner surface side joint portion 8 .

Further, the side plate portion 3 is formed with an inclined end surface 3c that comes into contact with the other side plate portion 3 when the side plate portion 3 is bent to form an inclined side end surface, and the inclined side end surface is recessed inwardly. When the side plate portion 3 is bent in an upright direction with respect to the bottom plate portion 2 and the cut-side end surfaces 3c of the adjacent side plate portions 3 are brought into a butted state, this cutting is performed. between the side end face 3c, claim 1 Symbol placement of paper Oribako characterized by being configured such that the adhesive reservoir unit 5 as the length direction central portion wider and becomes the shape of the cut end surface 3c is formed It is related to.

The covering layer 7 is formed by bending one of a sheet material, a transfer ink, a synthetic resin film, and an impregnating liquid with respect to the bottom plate portion 2 by hot stamping. The paper folding box according to claim 1 , wherein the paper folding box is attached to the paper folding box.

  Since the present invention is configured as described above, when assembling the folding box by folding the unfolded plate material, the side plate portion can be smoothly bent in the upright direction, and the outer side corners of the bent portion are not rounded and the edges are not rounded. It becomes a beautiful finished state that worked.

  Moreover, when the side plate portion is bent in the standing direction with respect to the bottom plate portion, the inner surface of the concave groove portion stays in the adhesive reservoir portion without being pushed out, and the edge portion on the bottom plate portion side and the side plate portion Adhesive does not protrude from the inner edge side of the side edge, resulting in a clean and beautiful finish, and there is no risk of the adhesive sticking out, so apply a sufficient amount of adhesive necessary for bonding. Therefore, there is no problem that the adhesive strength is lowered due to an insufficient amount of the adhesive.

  Furthermore, since the surface sheet is pasted, for example, functions such as waterproofness, durability, or decorativeness that are not found in paper are added, and therefore, an innovative paper product that is even more practical. It becomes a folded box.

Further, in the invention described in claim 2 , even when the end faces of the side plate portions are joined, the paper folding box having a beautiful finish and a beautiful finish without the adhesive protruding.

In the invention described in claim 3 , it is possible to conceal the paper exposed on the cut end face by a very simple method to make a paper folding box with good appearance.

It is an explanatory top view which shows the state of the expansion | deployment board | plate material of a present Example. It is a description perspective view which shows the present Example partially expanded. It is explanatory perspective view which shows a present Example. It is sectional drawing which shows another example of the inner surface shape of the grooved groove part of a present Example. It is sectional drawing which shows another example of the inner surface shape of the grooved groove part of a present Example.

  An embodiment of the present invention which is considered to be suitable will be briefly described with reference to the drawings showing the operation of the present invention.

  In the present invention, when the side plates 3 are bent in the standing direction with respect to the bottom plate 2 and the opposed inner surfaces of the concave groove portions 4 that are the folding edges are faced to each other, the space surrounded by the opposed inner surfaces is bonded. Since the agent reservoir 5 is formed, when the adhesive is applied to the inner surfaces of the concave groove portions 4 to bond and fix the bent portions, the inner surfaces are applied to the inner surfaces of the concave groove portions 4. The excess adhesive remains in the adhesive reservoir 5 without being pushed out and does not protrude from the adhesive surface, so that the inner surface side joint 8 is beautifully finished and becomes a paper folding box with a good appearance.

  Furthermore, since the development board 1 of the present invention is made of paper, it has poor practical functions such as waterproofness, durability, and decorativeness, but at least the inner surface when the development board 1 is made into a box shape is waterproof. A desired practical function that cannot be supplemented by paper can be easily imparted by pasting the surface sheet 6 having functions such as property, durability, and decorativeness. For example, when a resin film is pasted as the top sheet 6, the waterproofness and durability are improved, and it is possible to store water-containing foods. When a laminated paper having a certain material and design is pasted, it becomes an epoch-making paper folding box excellent in practicality and functionality that can be displayed very easily in a high-quality paper folding box.

  Further, when the side plate portion 3 is bent and erected, the cut side end surface 3c of the side plate portion 3 that comes into contact with the other side plate portion 3 is formed in an inclined shape to form an inclined side end surface, and the inclined side end surface is recessed inwardly. In the case of the configuration formed on the concave surface, the corner portion of the peripheral wall formed by the side plate portion 3 is not rounded and the edge finish is beautiful, and the cut side end surfaces 3c formed on the concave surface are attached. Since the space which becomes the adhesive reservoir 5 surrounded by the cut-side end surface 3c of the concave surface is formed when they are combined, an extra portion is formed as in the case where the bent portions of the bottom plate portion 2 and the side plate portion 3 are bonded. Since the adhesive is collected in the adhesive reservoir 5, the adhesive does not protrude from the abutting portion between the cut-side end faces 3 c, and the paper folding box is formed with a good appearance that does not impair the appearance.

  Specific embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, as shown in FIG. 1, a concave groove portion 4 is formed along the boundary between the bottom plate portion 2 and the side plate portion 3 of the development plate member 1, and the concave groove portion 4 is formed on the side plate portion 3. Is bent in the standing direction with respect to the bottom plate portion 2, and when the edge portion 2 a on the bottom plate portion 2 side of the groove portion 4 and the edge portion 3 a on the side plate portion 3 side abut, The inner surface of the adhesive reservoir 5 is formed between the inner surfaces facing each other, and at least the inner surface when the development plate 1 is formed in a box shape has functions such as waterproofness, durability, and decorativeness. This is a paper folding box in which a top sheet 6 is affixed and a covering layer 7 is provided on a cut upper end surface 3b of a side plate portion 3 that is bent with respect to a bottom plate portion 2.

  Specifically, the present embodiment is made of thick paper having a thickness of about 1 mm, and is a developed plate material 1 composed of a rectangular bottom plate portion 2 and four side plate portions 3 connected to the four sides of the bottom plate portion 2. This is a paper folding box that is bent.

  As shown in FIG. 2, the unfolded plate material 1 of the present embodiment is provided with a concave groove portion 4 that is a bent edge along the boundary between the bottom plate portion 2 and the side plate portion 3. When the portion 3 is bent in the standing direction with respect to the bottom plate portion 2 and the edge portion 2a on the bottom plate portion 2 side of the groove portion 4 contacts the edge portion 3a on the side plate portion 3 side, the groove portion 4 is configured to have an inner surface shape in which an adhesive reservoir 5 is formed between the opposed inner surfaces.

  Specifically, the bottom plate portion 2 side cutting surface 4a and the side plate portion 3 side cutting surface 4b, which are the inner surfaces of the concave groove portion 4, are formed in a concave surface that is inwardly concave, and the side plate portion 3 is formed into the bottom plate portion. The bottom plate portion formed in a concave surface when the edge portion 2a on the bottom plate portion 2 side of the concave groove portion 4 and the edge portion 3a on the side plate portion 3 side of the concave groove portion 4 are in contact with each other in a standing direction. A space surrounded by the cutting surface 4a on the second side and the cutting surface 4b on the side plate portion 3 side formed on the concave surface is formed, and the cutting surface 4a on the bottom plate portion 2 side and the cutting surface on the side plate portion 3 side are configured. A space surrounded by 4b is used as an adhesive reservoir 5.

  In this embodiment, the shapes of the cutting surface 4a on the bottom plate portion 2 side and the cutting surface 4b on the side plate portion 3 side, which are the inner surfaces of the recessed groove portion 4, are curved inwardly as shown in FIG. When the side plate portion 3 is bent in the upright direction with respect to the bottom plate portion 2 and the cutting surface 4a on the bottom plate portion 2 side and the cutting surface 4b on the side plate portion 3 side are brought into a butted state, a rugby ball shape is formed. A space is formed and this is used as an adhesive reservoir 5.

  In addition, the shape of the cutting surface 4a on the bottom plate portion 2 side and the cutting surface 4b on the side plate portion 3 side, which are the inner surfaces of the concave groove portion 4, is not limited to the above, and is formed in a stepped shape as shown in FIGS. The side plate 3 may be bent in an upright direction with respect to the bottom plate 2 and the cutting surface 4a on the bottom plate 2 side and the cutting surface 4b on the side plate 3 side. Are suitably adopted as long as they can form a space that can be surrounded by the cutting surface 4a on the bottom plate portion 2 side and the cutting surface 4b on the side plate portion 3 side to form the adhesive reservoir portion 5. Shall.

  In the present embodiment, a flat surface is formed on the bottom portion (more specifically, the bottom top portion) of the concave groove portion 4 and the folding margin portion 10 is provided.

  Specifically, without this folding margin 10, the bottom side of the bottom plate portion 2 and the side plate portion 3 of the concave groove portion 4 that is a bent portion abuts faster than the edge portions 2 a, 3 a side and By crushing each other, a crease occurs, and when the crease tries to return to its original position (the crease stretches), a force acts to open the fold, and as a result, a concave line There may be a problem that a gap is generated in the inner surface side joint portion 8 between the edge portion 2a on the bottom plate portion 2 side of the groove portion 4 and the edge portion 3a on the side plate portion 3 side. Therefore, in this embodiment, when the side plate portion 3 is bent with respect to the bottom plate portion 2, the bottom plate portion 2 and the side plate portion 3 of the groove groove portion 4 are bent so as not to contact each other quickly and crush each other. The folding part 10 formed on a flat surface having a width corresponding to the thickness of the part is provided to prevent the occurrence of folds.

  More specifically, the width of the folding margin portion 10 is appropriately set according to the remaining thickness of the portion located at the bottom of the grooved groove portion 4 when the grooved groove portion 4 is cut in the developed plate material 1. In the present embodiment, since the concave groove portion 4 is formed so that the remaining thickness is about 0.2 mm, the width of the folding margin portion 10 is set to about 0.2 mm.

  Further, the groove groove portion 4 of the present embodiment includes a straight line connecting the bottom top portion of the groove groove portion 4 and the edge portion 2a on the bottom plate portion 2 side, and an edge portion 3a on the bottom top portion and the side plate portion 3 side. The angle formed by the connecting straight lines is set to 90 °, and the side plate portion 3 is bent 90 ° with respect to the bottom plate portion 2 so that the side plate portion 3 is in an upright state.

  Further, when the side plate portion 3 is configured in a box shape standing in an outwardly inclined state with respect to the bottom plate portion 2, the bottom top portion of the concave groove portion 4 is connected to the edge portion 2 a on the bottom plate portion 2 side. A depression angle formed by a straight line and a straight line connecting the bottom top portion and the edge portion 3a on the side plate portion 3 side may be set to an acute angle smaller than 90 °. For example, if the depression angle is set to 45 °, the bottom plate portion 2 and the side plate portion 3 can be formed into a folded box having an opening side with an angle of 135 °.

  As described above, the present embodiment includes the straight line connecting the bottom top part and the edge part 2a on the bottom plate part 2 side of the concave groove part 4 and the straight line connecting the edge part 3a on the side plate part 3 side with the bottom top part. The angle formed is set to a desired angle, the side plate portion 3 is bent with respect to the bottom plate portion 2, and the edge portion 2a on the bottom plate portion 2 side of the grooved groove portion 4 is brought into contact with the edge portion 3a on the side plate portion 3 side. The paper folding box is excellent in workability and can be formed into a desired bending angle without measuring the finished angle with a simple work that is simply fixed in the state of being made.

  In addition, each of the four side plate portions 3 connected to the four sides of the rectangular bottom plate portion 2 is inclined by forming a cut-side end surface 3c that comes into contact with the adjacent side plate portion 3 when it is bent upright. It is set as the side end surface, and this inclined side end surface is formed into a concave surface that is concave inward.

  Specifically, as shown in FIG. 2, the side plate 3 is formed in a curved surface that is concave inward, and the side plate 3 is bent in an upright direction with respect to the bottom plate 2, and the cut side end surface of the adjacent side plate 3 is cut. A configuration in which a rugby ball-shaped space is formed when the 3c are brought into a butting state, and a space surrounded by the cut-side end surfaces 3c of the adjacent side plate portions 3 is defined as an adhesive reservoir portion 5. It is said.

  Note that the concave surface of the cut-side end surface 3c of the side plate portion 3 is not limited to the curved surface, but is a stepped concave surface or a V-shaped concave surface similar to the inner surface shape of the concave groove portion 4 described above. Alternatively, any shape that can form a space that can serve as the adhesive reservoir 5 when the cut-side end surfaces 3c of the adjacent side plate portions 3 are brought into contact with each other is appropriately adopted.

  Moreover, the present Example is set as the structure which affixed the surface sheet 6 which has practical functions, such as waterproofness, durability, and a decoration property, to the surface which becomes inner side at least when the expansion | deployment board | plate material 1 is formed in a box shape.

  The surface sheet 6 is made of either a laminated paper made of paper and a synthetic resin or metal, or a synthetic resin film. In this embodiment, the synthetic resin sheet and paper base material designed in a woodgrain pattern are used. A laminated paper in which sheets are laminated is pasted on both the inner surface and the outer surface.

  The top sheet 6 is preliminarily pasted on the unfolded unfolded plate 1 before being bent into a box shape, or stretched after the unfolded unfolded plate 1 is formed into a box shape. May be. In the present embodiment, the surface sheet 6 is preliminarily pasted on the front and back of the unfolded unfolded plate material 1, and the surface sheet 6 and the unfolded plate material 1 are cut together on the unfolded plate material 1 on which the surface sheet 6 is pasted. By forming the concave groove portion 4, the joining surfaces of the topsheet 6 can be joined together without any gaps, and a more beautiful finish can be achieved. Become.

  Furthermore, in this embodiment, the cover layer 7 is provided on the cut upper end surface 3b of the side plate portion 3 that is bent with respect to the bottom plate portion 2.

  This coating layer 7 is formed on the cut upper end surface 3b of the side plate portion 3 which is either a sheet material, transfer ink, synthetic resin coating, or impregnating liquid, which is bent with respect to the bottom plate portion 2 by hot stamping. It is configured to be attached.

  That is, when the side plate portion 3 is formed in a box feather shape bent 90 ° with respect to the bottom plate portion 2, the side plate portion 3 is in an upright state and the cut upper end surface 3b is in a state parallel to the horizontal direction. The coating layer 7 can be easily applied to the cut upper end surface 3b of the side plate portion 3 by an extremely simple operation by simply pressing the stamp. In this embodiment, the coating layer 7 has a waterproof property. The paper portion of the development board 1 exposed on the cut upper end surface 3b is concealed, and the paper development board material 1 is completely covered with the surface sheet 6 to completely expose the paper portion. The paper folding box is concealed and has a waterproof function.

  Further, in order to further improve the waterproof property of the paper folding box, in this embodiment, as shown in FIG. 5, the side plate portion 3 is bent in the upright direction with respect to the bottom plate portion 2, and the unfolded plate material 1 is boxed. When the groove portion 4 is formed into a shape, the inner surface side joint portion 8 where the edge portion 2a on the bottom plate portion 2 side and the edge portion 3a on the side plate portion 3 abut against each other is provided with a waterproof property such as an oil film or a synthetic resin film. The waterproof coating 9 is provided.

  In addition, this waterproof coating 9 is good also as a structure which provided not only in the said location but the inner surface of the butt | joining junction part of the cutting | disconnection side end surface 3c of the side-plate part 3, and improved further waterproofness.

  As described above, in the present embodiment, the adhesive reservoir portion 5 does not protrude from the inner surface of the box without sticking out the excessive adhesive of the adhesive applied to fix the corner portion when the development plate 1 is formed in a box shape. It is housed in a paper folded box with a beautiful finish and no adhesive sticking out.

  In addition, since it is not necessary to reduce the amount of the adhesive by paying attention to the protrusion of the adhesive, the adhesive strength does not decrease, and the paper sheet 1 is waterproofed and decorated with the topsheet 6 having a decorative property. Since it is completely covered with the coating layer 7 and the exposure of the paper part is completely hidden, it has a good appearance that combines all of waterproofing, durability, and decorativeness, and is also an innovative and practical Paper folding box.

  Note that the present invention is not limited to this embodiment, and the specific configuration of each component can be designed as appropriate.

DESCRIPTION OF SYMBOLS 1 Unfolded plate material 2 Bottom plate part 2a Edge part 3 Side plate part 3a Edge part 3b Cutting upper end surface 3c Cutting side end face 4 Groove groove part 4a Cutting surface 4b Cutting surface 5 Adhesive reservoir part 6 Surface sheet 7 Covering layer 8 Inner surface side junction part 9 Waterproof coating
10 folding parts

Claims (3)

In a paper folding box formed by bending a development plate material, a bottom plate portion of the development plate material in which a surface sheet made of either a laminated paper made of paper and synthetic resin or metal, or a synthetic resin film is pasted on both front and back surfaces and a concave groove the Orient along the boundary between the side plate portion is provided, the concave groove, the curved surface becomes concave and the inner surface of the bottom plate portion side inner surface and the side plate portion of the respective inwardly or It formed in a V-shaped surface, by bending the standing direction the side plate portion relative to the bottom plate portion, of the bottom plate portion of the edge of the concave groove of this and the side plate portion and an edge portion equivalent The lower end which becomes the bottom top part of this grooved groove part from the upper end of the inner surface where the edge part by the side of the bottom plate part and the edge part by the side plate part side contact between the inner surfaces which the grooved groove part opposes when making contact configuration Then the so that the adhesive pool portion of the wide and becomes shaped as the central portion is formed to extend In the a configuration in which a flat surface serving as a folding strip portion Sokoitadaki portion, the side plate portion which set bent upright to the bottom plate portion, the sheet material cut upper end surface, transfer ink, synthetic resin film, or The bottom plate portion of the concave groove portion when the covering plate of any one of the impregnating liquids is provided, and the side plate portion is bent in a standing direction with respect to the bottom plate portion to form the unfolded plate material in a box shape. A paper folding box characterized in that a waterproof coating such as an oil film or a synthetic resin film is provided on the inner surface side joint where the edge on the side and the edge on the side plate abut against each other . The side plate portion is formed with a slanted side end surface that is in contact with another side plate portion when the side plate portion is bent to form a slanted side end surface, and the slanted side end surface is a curved surface that is concave inward. As the formed configuration, when the side plate portion is bent in an upright direction with respect to the bottom plate portion and the cut side end surfaces of the adjacent side plate portions are brought into a butted state, the cut side end surface is between the cut side end surfaces. of claim 1 Symbol placement of paper Oribako characterized by being configured such that the adhesive pool portion of the wide and becomes shaped as the central longitudinal portion. The coating layer 7 is applied to the cut upper end surface of the side plate portion, which is a sheet material, transfer ink, synthetic resin coating, or impregnation liquid, which is bent with respect to the bottom plate portion by hot stamping. The paper folding box according to any one of claims 1 and 2 .

Images