JP2014005067A - Box body made of corrugated board and coffin made of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To strengthen practically sufficient withstand load strength of a coffin main body constituted of a box body made of corrugated board configured by assembling a developed sheet of the corrugated board in a long-side direction, or a longitudinal direction.SOLUTION: A coffin made of corrugated board A is configured by folding and assembling a developed sheet (a) of the corrugated board along bending grooves (a1) through (a7). When long-side bending grooves 7a by which long-side side plate portions 2 are folded and are continuously provided on a rectangular-shaped bottom plate portion 1 to be able to be erected are formed toward a corrugated direction of corrugated central cores (a4) of the corrugated board and the long-side side plate portions 2 are folded and erected along the long-side bending grooves 7a, strengthened beam materials 9 are cured and formed at corner portions continuously provided to the bottom plate portion 1 and the long-side side plate portions 2 by pouring a filling material into cavity portions 8 of the corrugated central cores (a4) that communicate with the bottom plate portion 1 sides and long-side side plate portions 2 sides including the long-side bending grooves 7a.

Description

  The present invention relates to a corrugated cardboard box and a corrugated board iron, and in particular, a corrugated cardboard box configured to be assembled into a box shape by folding a development sheet made of reinforced corrugated card along a bending groove, and the corrugated cardboard box. The present invention relates to a corrugated board made by applying to the main body.

In recent years, corrugated cardboard bags have attracted attention instead of wooden bags due to the trend of eco-thinking. Corrugated iron is lighter and more convenient for transportation than wooden caskets, and has excellent flammability during cremation, shortening incineration time, reducing fuel consumption, and carbon dioxide (CO ₂ ) As the environment-friendly eco-products, such as reducing the waste of wood resources and reducing the waste of wood resources, can also contribute to the protection of natural resources, various forms have been proposed (for example, (See Patent Document 1).

The corrugated iron making machine described in Patent Document 1 is configured to be assembled in a box shape by forming V-grooves in the vertical and horizontal directions on a development sheet made of reinforced corrugated cardboard, and bending the development sheet along the V-groove. Yes.
That is, the unfolding sheet that assembles and forms the box-shaped ridges has a rectangular bottom plate, both side plates that are bent vertically by the vertical V-groove at the left and right long sides of the bottom plate, and a vertical V groove at the front and rear short sides of the bottom plate. It is equipped with both end plates that can be bent. Further, the unfolded sheet is folded inward in the vertical direction by the lateral V-groove and overlaps the inner side of the end plate on both side plates at a position shifted to the center side in the front-rear direction (short side direction) of the bottom plate by the sheet thickness. A sandwiching plate is provided on both side plates, and a bridge plate that is folded inward horizontally by a lateral V-groove above the sandwiching plate on both end plates, and a vertically V-shaped groove from the front end (release end) of the bridge plate. And a folded plate that is folded back and overlaps the inside of the clamping strip.

By the way, corrugated board iron is inferior in load bearing strength (durability) compared with wooden coffin. In particular, the load bearing strength in the long side direction (longitudinal direction) of the bottom and both sides of the bag body assembled and formed in a rectangular shape (rectangular shape) in a plan view of the upper surface opening from one unfolded sheet is inferior. For that purpose, the load resistance strength in the same long side direction is strengthened, and the long side direction of the cocoon body, especially the central part in the long side direction, etc., depending on the load of the remains and other items to be stored (dry ice etc.) It is important to prevent buckling such as bending downward (distortion).
In other words, the casket is carried out while supporting both sides (short sides) in the longitudinal direction when it is lifted and moved or placed on the funeral altar. When placed on the funeral altar, in order to be placed on the funeral altar in a state where both sides in the longitudinal direction are placed and supported on the stand,

Utility Model Registration No. 3134919 (see paragraph numbers 0013, 0032 to 0038, and FIGS. 1 to 9)

  Therefore, in the prior art described in Patent Literature 1, a contact surface (adhesion area) in a wide range between the plate surfaces is ensured by overlapping the end plate and the folded plate on the outer side and the inner side of the sandwiching plate, thereby The fixing strength of both side plates and both end plates of the heel body is increased, and the load bearing strength of the heel body is improved.

  However, when the fixing strength of both side plates and both end plates of the heel body is increased in this way, the long side of the heel body that is most required to withstand load loads such as dead bodies and other things to be stored The load bearing strength in the direction (longitudinal direction) cannot be improved. Therefore, in the prior art, the long side direction that causes buckling such as the bottom center part in the long side direction of the heel body is bent downward (distorted) due to the heavy load of the dead body or other items to be accommodated. There was still a lack of strength.

  In the prior art, as shown in FIGS. 1, 2 and 9 of Patent Document 1, the left and right long sides of the bag main body are a two-layer wall structure of a side plate and a frame plate folded and overlapped inside the side plate. The front and rear short sides are configured as described above, and a three-layered wall structure is formed of a back plate and a back plate that sandwiches the sandwich plate from the inside and outside. Therefore, the opening edge width on the short side is wider than the opening edge width on the long side in the opening of the bag body, and one sheet of three-layer reinforced corrugated cardboard is provided outside the corners of the long side and the short side. The appearance of the appearance and the like is reduced due to the appearance of a step corresponding to the thickness of the material.

  Therefore, the present invention has been developed with the object of solving such problems. That is, using the cross-sectional shape characteristics of corrugated cardboard composed of a laminated structure of front and back liners and corrugated cores, the long side direction (longitudinal direction) of the bag body made of corrugated cardboard boxes assembled from corrugated cardboard sheets is It is an object of the present invention to reinforce to a practically sufficient load bearing strength.

In order to solve the above-described problems, the corrugated board box and the corrugated board according to the present invention have at least the following configurations.
That is, the corrugated cardboard box of the present invention is a corrugated cardboard box formed by forming a bending groove in a development sheet made of corrugated cardboard, folding the development sheet along the bending groove, and assembling it into a box shape. ,
The spread sheet is at least a rectangular bottom plate, a long side plate connected to the bottom plate via a long side bendable groove, and a bendable short side bend to the bottom plate. A long side bend groove is formed in the development sheet in a direction toward the wavy direction of the corrugated core of the cardboard,
When the long side plate portion is bent and raised along the long side bending groove, the corrugated core hollow portion including the long side bending groove and communicating with the bottom plate portion side and the long side plate portion side is provided. A filler having adhesiveness is poured and filled, and a reinforcing beam material over the entire length of the long side is hardened and formed at a continuous corner portion between the long side plate portion and the bottom plate portion. .

  Here, the reinforcing beam member is hardened and formed in an L shape in a cross-sectional view and is provided over the entire length of the long side, and the hollow portion of the corrugated core on the bottom plate side and the long side plate portion side. The filler is poured and filled, and the reinforcing beam member is formed by being protruded and cured over the entire length of the long side at the corner inside the continuous corner portion of the bottom plate portion and the long side plate portion. An in-side corner pressing portion is integrally provided, and the long-side inner corner pressing portion is poured into the short-side bending groove when the short-side side plate portion is bent and raised along the short-side bending groove, and is filled in the bottom plate. The inner side of the corner and the short side plate portion are connected to the inner corner of the short side formed by being protruded and hardened over the entire length in the short side direction. , Etc. configuration Adopting is suitable.

  In addition, the spread sheet is connected to the long side plate portion and the short side plate portion so as to be able to be folded inward horizontally through an upper long side bending groove and an upper short side bending groove, respectively, and the long side side plate portion and A long side folded plate portion and a short side folded plate portion that overlap each inner side of the short side plate portion, and the long side folded plate portion that is connected to the long side side plate portion so as to be vertically inwardly foldable via a side bending groove. An inner bending single piece plate portion that overlaps the inner side of the side plate portion with the open ends being flush with each other, and the short side folded plate portion is folded and folded inside the short side plate portion When it is done, it adopts a configuration that is formed so as to overlap the inner side of the short side plate portion together with the inner bending single piece plate portion in a state of being flush with the inner bending single piece plate portion. It is preferable to do this.

  According to the corrugated cardboard box having such a configuration, the long side direction (longitudinal direction) of the box is formed into a corrugated core cavity in the continuous corner portion of the rectangular bottom plate and the long side plate. It is reinforced by the reinforcing beam material that is filled and filled and hardened over the entire long side of the continuous corner portion. Thereby, practically sufficient load resistance strength is provided in the long side direction (longitudinal direction) of the box bottom. That is, it is possible to impart the same load resistance strength of the wooden rod in the long side direction of the bottom of the box body, and to suppress buckling of the bottom bent (distorted) downward due to the load.

In addition, the reinforced beam member functions as a so-called angle member that is L-shaped in a cross-sectional view integrally connected to the bottom plate portion side and the long side plate portion side, that is, is strong against load loads in the bending direction. By exhibiting the cross-sectional structure, the load bearing strength in the long side direction (longitudinal direction) of the box bottom can be effectively enhanced.
Further, the upright posture of the long side portion (long side plate portion) that is bent upright from the bottom portion (bottom plate portion) of the box body is provided over the entire length of the long side at the continuous corner portion of the upright base. It is held in a fixed shape by a letter-shaped reinforcing beam. Thereby, when the box body bottom part (bottom plate part) receives a load load, the phenomenon that the long side part (long side plate part) of the box body is pulled inward can be prevented at its standing base. .

In addition, the inner side corner portion of the continuous corner portion of the bottom plate portion and the long side plate portion is provided with a corner holding portion in the long side that is integrally formed with the reinforcing beam material and is hardened, and the bottom plate portion and the short side plate portion. Inside the corner of the continuous corner part, the corner holding part in the short side that is integrally connected to the corner holding part in the long side and hardened is provided, thereby increasing the load resistance strength of the box bottom. It can be further strengthened from the inner side of both sides of the side and the short side.
In addition, the long side folded plate part folded inside the long side side plate part can be pressed by the long side corner pressing part, and the open ends are connected to the inside of the short side plate part by the short side corner pressing part. It is possible to press in an inner bending single piece plate portion that is bent and stacked in a state where the two are in contact with each other. In other words, in the prior art, an inner bottom plate having substantially the same shape as the bottom plate portion is placed inside the bottom of the box body, and the long side and the short side folded plate portions are prevented from peeling off by jumping up. This can be prevented by the long side and short side inner corner pressing portions integrally formed continuously along the inner sides of both the long side and short side corners.

Further, the long side portion of the box body has a two-layer wall structure of a long side plate portion and a long side folded plate portion that is folded over the entire inner surface, and the short side portion of the box portion is a short side portion. A side plate portion, an inner bending single piece plate portion from the long side plate portion side which is overlapped in a state where the open ends are abutted with each other, and a state where the inner bending single piece portion is butt-engaged in a flush manner Thus, a two-layer wall structure is formed which includes the inner side single piece plate portion and the short side folded plate portion from the short side plate portion side which is overlapped inside the short side plate portion. Thereby, the rigidity with respect to the load resistance strength which a bottom part receives to the long side part and short side part of a box can be provided.
In addition, the long side opening edge and the short side opening edge in the opening of the box body have the same edge width, and there is a gorgeous appearance in which a step or the like does not appear outside the corner of the long side plate part and the short side plate part It is possible to assemble and configure a box body that exhibits the following.

  In addition, the corrugated board making of the present invention is obtained by applying a corrugated box made of the corrugated board to the box body by folding the developing sheet along a groove and assembling it into a box shape. It is characterized by.

According to the corrugated board iron having such a structure, the corrugated board box having the above-described structure is applied to the main body.
That is, the long side direction of the bottom of the ridge body is filled and filled into the corrugated core cavity at the continuous corner portion of the rectangular bottom plate portion and the long side plate portion, and cured over the entire long side of the continuous corner portion. Reinforced by the reinforced beam material formed. As a result, a practically sufficient load-bearing strength is suppressed in the long side direction (longitudinal direction) of the bottom of the box body to suppress buckling that the bottom part bends (distorts) due to a load load such as a dead body or other contained items. Can be granted.

  In addition, the load-bearing strength in the bottom long side direction of the heel body can be effectively strengthened by the reinforcing beam member having an L-shaped cross-sectional view, and when the bottom portion (bottom plate portion) receives a load load. A phenomenon that the long side portion (long side plate portion) of the heel body falls down so as to be pulled inside the heel body can be prevented at its standing base.

  In addition, the inner side corner portion of the continuous corner portion of the bottom plate portion and the long side plate portion is provided with a corner holding portion in the long side that is integrally formed with the reinforcing beam material and is hardened, and the bottom plate portion and the short side plate portion. Inside the corner of the continuous corner part, the short side corner presser part that is integrally connected to the long side corner presser part and hardened is provided, thereby increasing the load resistance strength of the bottom of the heel body. It can be further strengthened from the inner side of both sides of the side and the short side. That is, the rectangular shape of the bottom of the rod main body is formed by the reinforcing beam material on both sides of the long side, and the long side and short side both corner presser portions integrally provided along the inner sides of the long side and the short side. By maintaining the fixed shape, the load bearing strength can be further strengthened.

According to the corrugated cardboard box of the present invention, the continuous corner portion of the rectangular bottom plate portion and the long side plate portion is provided with the reinforcing beam material that is hardened and formed over the entire length of the long side. A practically sufficient load bearing strength can be enhanced in the (longitudinal direction). Thereby, the load-bearing strength in the long side direction (longitudinal direction) of the bottom portion can be improved, and buckling that the bottom portion bends (distorts) downward due to a load can be suppressed.
Moreover, the reinforcing beam material can be effectively strengthened in the load bearing strength in the longitudinal direction of the box by being cured and formed in an L shape in a cross-sectional view.

  In addition, it is provided with a corner presser in the long side that is integrally formed with the reinforcing beam material and is cured and formed inside the corner of the continuous corner portion between the bottom plate and the long side plate, and the bottom plate and the short side plate The corner-holding part in the short side that is integrally connected to the corner-holding part in the long side is provided inside the corner of the continuous corner part, and is cured and formed. It can be further strengthened from inside the corners on both sides of the short side.

  In addition, according to the corrugated board making of the present invention, by applying the corrugated board box having the above-described configuration to the bowl main body, the bottom long side direction of the bowl main body includes a rectangular bottom plate portion and a long side plate portion. The continuous corner portion of the continuous corner portion flows into the hollow portion of the corrugated core and is reinforced by a reinforcing beam material that is hardened and formed over the entire long side of the continuous corner portion. As a result, a practically sufficient load-bearing strength is suppressed in the long side direction (longitudinal direction) of the bottom of the box body to suppress buckling that the bottom part bends (distorts) due to a load load such as a dead body or other contained items. Can be granted.

Moreover, the load-bearing strength in the bottom long side direction of the rod main body can be effectively strengthened by the reinforcing beam member having an L-shaped cross-sectional view.
In addition, when the bottom part (bottom plate part) is subjected to a load, the long side part (long side plate part) of the heel body collapses so that it is pulled inside the heel body. This can be prevented at the standing base of the continuous corner portion. Thereby, reinforcement of the load bearing strength which suppresses the buckling bent (distorted) below the heel main body bottom part can be aimed at.

  In addition, the rectangular shape of the bottom of the rod main body is formed of a reinforcing beam material on both sides of the long side, and a long side and short side inner corner formed integrally and continuously along the inner sides of both the long side and short side corners. By holding the fixed shape by the presser portion, the load bearing strength of the heel body can be further strengthened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view showing a long side direction showing an overall configuration of a corrugated board making made by applying a corrugated board box body according to an embodiment of the present invention to a making body. It is longitudinal explanatory drawing of the same short side direction. It is a description perspective view when the expansion | deployment sheet | seat which assembles and comprises the bag main body of the corrugated cardboard box is seen from the back side. It is an expansion perspective view of the principal part which shows an example of the processing form of a long side bending groove and a long side folded bending groove. It is an expansion perspective view of the principal part which shows an example of the processing form of a short side bending groove, a short side folding | turning bending groove, and a side bending groove. It is an expansion perspective view of the principal part which shows a reinforcing beam material and a long side inside corner pressing part. It is an explanatory perspective view showing the state where the long side folded plate portion is folded and overlapped inside the long side plate portion. It is a description perspective view which shows the state which bent the long side board part perpendicularly | vertically and bent the inward bending single piece board part inward. It is explanatory perspective view which shows the state which bent the short side plate part perpendicularly | vertically, and folded the short side folding plate part on the inner upper half part of the short side plate part. It is a description perspective view which shows the assembled bag main body with a cover body.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.
FIG. 1 is a longitudinal sectional view for explaining the overall configuration of a corrugated board made by applying the corrugated box body according to an embodiment of the present invention to the bowl body, and FIG. FIG.

≪Explanation of corrugated board making≫
Corrugated cardboard iron (hereinafter simply referred to as “claw”) A is formed by bending and assembling a reinforced corrugated cardboard having two or three layers, for example, a two-layer reinforced corrugated cardboard shown in an enlarged view in FIG. It consists of a bag main body A1 having an upper surface opening and a lid A2 having a lower surface opening for closing the opening of the bag main body A1. A window that is opened and closed by a double door is opened near the front side (one side short side) of the lid A2, and the inside of the bag main body A1 can be viewed by opening the door.
The size of the ridge A is, for example, a long side (length) dimension of about 1700 to 2000 mm, a short side (width) dimension of about 500 to 700 mm, and a height dimension including the lid A2 of about 400 to 500 mm. .

The two-layer reinforced corrugated cardboard has a two-layer flute structure in which two layers of corrugated cores a4 are laminated and bonded via an intermediate liner (partition plate) a3 between a front liner a1 and a back liner a2 made of reinforced thick plates. It is.
In this embodiment, virgin pulp made directly from wood or non-wood with little waste paper is used as the material of the front liner a1, the back liner a2, the intermediate liner a3, and the corrugated core a4. As a result, after the cremation, the burning residue that becomes an obstacle to the bone picking work, the so-called calcium component remains as ash as much as possible, and the sorting work is reduced.
Here, the surface liner a1 becomes the surface (outer coating) of the heel A, and the back surface liner a2 becomes the inner surface (endothelium) of the heel A.

  The texture of the eyelid A can be enhanced by applying a cosmetic finish such as attaching a decorative sheet made of a flammable cloth or film on the surface of the eyelid A as necessary.

≪Description of 棺 body≫
FIG. 3 is an explanatory perspective view when the unfolding sheet that assembles and configures the bag main body is viewed from the back side (back side liner side). Here, description will be made with reference to FIGS. 1 and 2 as appropriate.
The bag main body A1 is bent from a spread sheet (blank sheet) a shown in FIG. 3 and assembled into a box shape having an upper surface opening shown in FIGS.
The unfolded sheet a is manufactured by being punched and cut from a double-layer reinforced cardboard by a punching machine such as a press. As shown in FIG. 3, the unfolded sheet a has a rectangular (rectangular) bottom plate portion 1 and a length that is connected to both long sides of the bottom plate portion 1 so as to be able to be bent upright through a long side bending groove 7 a. A side plate portion 2 and a short side plate portion (face plate portion) 3 are provided on both short sides so as to be bent upright via a short side bending groove 7b.
Further, as shown in FIG. 3, the spread sheet a is continuously arranged so as to be able to be folded inward via a long-side folded groove 7 c adjacent to the upper side of the long-side plate portion 2 in two rows (double). The long side folded plate part 4 and the side folded plate part 4 and the short side which are continuously connected inwardly via a short side folded bent part 7d adjacent to the upper side of the short side plate part 3 in two rows. The folded plate portion 5 and the inwardly bent single piece plate portions 6 which are continuously connected to both sides of the long side plate portion 2 via the side bend grooves 7e so as to be bent inward are provided.

  The long side plate portion 2 and the short side plate portion 3 that are bent upright from both the long side and the short side of the rectangular bottom plate portion 1 in a plan view have the same bent upright height from the bottom plate portion 1. Dimension is formed.

  The long side folded plate portion 4 connected to the upper side of the long side plate portion 2 via the long side bending groove 7 a is formed with the standing height dimension of the long side plate portion 2. Thereby, as shown in FIG. 2, the long side both wall portions of the bag main body A1 have a double wall structure (two-layer reinforced corrugated cardboard double wrapping W) composed of the long side side plate portion 2 and the long side folded plate portion 4. Structure) and practically sufficient strength.

And the inner bending single piece board | plate part 6 provided in a row by the side bending groove | channel 7e on the standing both sides | sides of the long side board part 2 is mutually short as shown in FIG.1 and FIG.2. It is formed in a bent width dimension that is flush with the inner side of the short side plate portion 3 in a state of abutting at the center in the width direction of the side side plate portion 3.
Further, as shown in FIGS. 1 and 2, the inwardly bent single piece plate portion 6 is folded and stacked inside the short side plate portion 3, and the standing height dimension from the bottom plate portion 1 is the bottom plate portion. 1 is formed at a height lower than the standing height dimension of the short side plate portion 3. Thereby, when the short side folded plate part 5 is folded and overlapped inside the short side plate part 3, it is made to butt-engage with the upper side of the inner bending single piece board part 6. FIG.

On the other hand, the short side folded plate portion 5 connected to the upper side of the short side plate portion 3 via the short side folded groove 7d is folded inside the short side plate portion 3 as shown in FIGS. When overlapped, it is formed to have a folded width dimension in which the open end is abutted and engaged with the upper side of the inwardly bent single piece plate portion 6. That is, the short side folded plate portion 5 is formed in a position that is positioned in the upper half of the inner side of the short side plate portion 3 and is overlapped with the inwardly bent single piece plate portion 6.
As a result, the short side folded plate portion 5 has a short side plate together with the both-side bent single piece plate portion 6 that is put on the inner side of the short side plate portion 3 with the open ends abutting each other at the central portion in the width direction of the short side plate portion 3. It overlaps inside the part 3 in a flush manner. That is, the short side walls of the heel body A1 are composed of the short side plate portion 3, the both inner bending single piece plate portions 6 that are flush with each other with the open ends facing each other inside the short side portion 3, and A double wall structure (two-layer reinforced corrugated cardboard) composed of a short side folded plate portion 5 which is abutted and engaged with the upper sides of both inner bent single piece plate portions 6 and is flush with the inner half of the short side portion 3 The two-layer overlap W structure) provides practically sufficient strength in the same manner as the long side wall portions 2 described above.

≪Explanation of bending groove≫
Next, the long side plate portion 2, the short side plate portion 3, the long side folded plate portion 4, the short side folded plate portion 5, the inner bending single piece plate portion 6 can be folded 90 °, or can be folded 180 °. Each bending groove 7a-7e formed in the boundary part of each plate part 2-6 so that it may connect continuously is demonstrated. Here, it demonstrates, referring suitably FIGS. 1-3.

First, the long side bending groove 7a and the long side folded bending groove 7c will be described. FIG. 4 is an enlarged perspective view of a main part showing a processing mode of a long side bending groove and a long side folded bending groove.
The long side bent groove 7a and the long side folded bent groove 7c are formed in the direction toward the wavy direction of the wavy center a3 of the double reinforced corrugated cardboard.
Specifically, as shown in FIG. 4, the long side bending groove 7a and the long side folded bending groove 7c leave the surface liner a1 side, and include a back surface liner a2, an intermediate liner a3, and a two-layer wavy core a4. By using a rotary blade or the like to cut the groove angle into a V shape with a substantially 90 ° angle, the boundary between the bottom plate portion 1 and the long side plate portion 2 and the long side plate portion 2 and the long side folded plate portion 4 are V-grooves formed respectively in a direction (a direction perpendicular to the hollow portion 8 of the corrugated core material a3) toward the corrugated direction of the corrugated core a3 at the boundary of 4.
Thus, the hollow portion 8 of the corrugated core a4 on the bottom plate portion 1 side and the long side plate portion 2 side exists in an open communication shape in a direction orthogonal to the groove direction of the long side bending groove 7a extending continuously in the long side direction. In addition, the cavity 8 of the corrugated core a4 on the long side plate portion 2 side and the long side folded plate portion 4 side is orthogonal to the groove direction of the long side folded groove 7c extending in the long side direction. It exists in the form of an opening in the direction.

  As shown in FIGS. 2 and 3, the long-side folded groove 7 c is formed by bending the long-side folded plate portion 4 by 90 ° inward from the upper side of the long-side plate portion 2 and further folding it 90 ° downward. . That is, the long side folded plate portion 4 is formed in two rows (double) suitable for folding 180 ° inward from the upper side of the long side plate portion 2 and overlapping the entire inner side of the long side plate portion 2.

Next, the short side bending groove 7b, the short side folded bending groove 7d, and the side bending groove 7e will be described. FIG. 5 is an enlarged perspective view of a main part showing a processing mode of a short side bending groove, a short side folding groove, and a side bending groove.
The short side bending groove 7b, the short side folding groove 7d, and the side bending groove 7e are respectively formed in the direction of the hollow portion 8 of the corrugated core a4 (direction orthogonal to the corrugated direction of the corrugated core a3).
More specifically, as shown in FIG. 5, the short side bent groove 7b, the short side folded bend groove 7d, and the side bend groove 7e leave the front liner a1 side, the back liner a2, the intermediate liner a3, and the two layers. A slit is formed in the corrugated core a4, and both sides of the slit are crushed so as to form a V-shape having a groove angle of approximately 90 °, whereby the boundary between the bottom plate portion 1 and the short side plate portion 3 and the short side At the boundary between the side plate portion 3 and the short side folded plate portion 5 and at the boundary between the long side side plate portion 2 and the inner bent single piece plate portion 6, the undulating core a 3 is formed toward the direction of the hollow portion 8 of the undulating core a 4. V groove.

  As shown in FIGS. 1 and 3, the short-side folded groove 7d is formed by bending the short-side folded plate portion 5 inward from the upper side of the short-side plate portion 3 by 90 ° and further folding downward by 90 °. . That is, it is formed in two rows (double) of V-grooves suitable for folding the short side folded plate portion 5 180 ° inward from the upper side of the short side plate portion 3 and overlapping the upper half on the inner side of the short side plate portion 3. ing.

  In the present embodiment, in the assembling operation for assembling and constructing the heel body A1 by sequentially bending the development sheet a along the bending grooves 7a to 7e formed as described above, the long side bending groove 7a is included. Pour and fill a paper material (corrugated cardboard) filler into the hollow portion 8 of the corrugated core a4 on the bottom plate portion 1 side and the long side plate portion 2 side that communicate with each other through the long side bending groove 7a. Thus, the L-shaped reinforcing beam material 9 is hardened and formed in a cross-sectional view at the continuous corner portion of the bottom plate portion 1 which is the bottom portion of the main body A1 and the long side plate portion 2 which is the long side wall portion. Yes.

  Further, in this embodiment, as shown in FIGS. 1 and 2, the reinforcing beam member 9 is hardened and formed at the same time as the reinforcing beam member 9 inside the corner of the continuous corner portion in the long side direction (longitudinal direction). A corner in the short side where the corner-holding portion 10 in the long side that is integrally provided is integrally connected to the corner-holding portion 10 in the long side inside the corner of the corner in the short side (short direction). The presser part 11 is hardened.

≪Explanation of reinforced beams and corner pressers in both long and short sides≫
FIG. 6 is an enlarged perspective view of the main part showing the reinforcing beam member and the long side inner corner pressing part.
The reinforcing beam member 9 is hardened and formed in an L shape in a cross-sectional view at the connecting corner portion of the bottom portion of the heel body A1 constructed in a rectangular shape (rectangular shape) and the long side wall portions on both sides, and extends over the entire length of the long side. By being provided, the load bearing strength in the long side direction (longitudinal direction) of the heel body A1 is reinforced. In other words, practically sufficient resistance over the entire length of the long side of the bottom portion to suppress buckling of the bottom portion of the heel body A1 that is bent downward (distorted) due to the load of a dead body or other items contained in the heel body A1. It plays a role of imparting load strength.

  The filler for hardening the reinforcing beam material 9 is a resin-based adhesive, for example, a modified vinyl acetate-based adhesive. The viscosity (mPa · s / 23 ° C.) of the filler is such that when the long side bending groove 7a is poured into the hollow portion 8 of the corrugated core a4 on the bottom plate portion 1 side and the long side plate portion 2 side, the long side For example, 20,000 to 30 to the extent that the flow stops in the filling portion range so that the cavity portion 8 is completely filled in the bending groove 7a in the predetermined filling portion range in the cavity portion 8 from the opening of the groove wall. A range of 000 is preferred, with 25,000 being particularly preferred.

  The filling and filling of the filler having such a viscosity into the cavity 8 from the long side bending groove a1 including the long side bending groove a1 is performed by forced filling using a filling nozzle (not shown). In addition, the filling of the remaining bending grooves a3 to a7 including the short side bending groove a2 continuously connecting the bottom side plate part 1 so that the short side plate part 3 can be bent upright is also performed by forcible filling by the filling nozzle. Is.

[Description of operation]
Next, an example of an assembly procedure for assembling and constructing the bag main body A1 from the spread sheet a will be briefly described.
FIGS. 7 to 9 are explanatory perspective views showing an assembling procedure of the heel body, and FIG. 10 is an explanatory perspective view showing the assembled heel body together with the lid. Here, it demonstrates, referring suitably FIGS. 1-3.

From the state of the unfolded sheet a shown in FIG. 3, first, as shown in FIG. 7, the long side folded plate portion is folded back inside the long side plate portion 2 along the long side folded bending groove 7c and bonded and fixed. .
Next, a filler is poured into the long side bending groove 7a between the bottom plate portion 1 and the long side plate portion 2 and the short side bending groove 7b between the bottom plate portion 1 and the short side plate portion 3 by forced filling using a filling nozzle. To do. At this time, an amount of filler is filled so that the filler flows into a predetermined filling range of the hollow portion 8 of the corrugated core a4 on the bottom plate portion 1 side and the long side plate portion 2 side communicating with each other via the long side bending groove 7a. Is poured into both cavities 8 from the long side bending groove 7a and filled. Further, when the long side plate portion 2 is vertically bent and raised along the long side bending groove 7a, the filler is added in a large amount so that a part of the filler protrudes inside the corner of the continuous corner portion. The long side bending groove 7a is poured and filled.
Further, when the short side plate portion 3 is vertically bent and raised along the short side bending groove 7b, an amount of filler that protrudes from the inside of the continuous corner portion of the filler is added to the short side bending groove 7b. Pour into and fill.

In this way, with the filler poured into the long side bending groove 7a and the short side bending groove 7b, as shown in the figure, the long side plate portion 2 is vertically bent and raised along the long side bending groove 7a. At the same time, the inwardly bent single piece plate 6 on both sides of the long side plate 2 is bent inward along the side bent groove 7e, and then the short side plate 3 is bent vertically along the short side bent groove 7b. The inner bent single piece plate portion 6 is bonded and fixed inside the short side plate portion 3.
Finally, the short side folded plate portion 5 is folded and fixed to the inner upper half of the short side side plate portion 3 along the short side folded plate groove 7d, thereby fixing the rectangular shape (rectangular shape) shown in FIGS. The bag main body A1 is assembled and configured.

  Further, in this embodiment, as shown in FIG. 1 and FIG. 2, a reinforcement made of double-layer reinforced corrugated cardboard is used on the back surface of the bottom portion (bottom plate portion 1) of the bag main body A1 to further improve the load bearing strength of the entire bottom portion. The bottom plate 12 is provided by pasting or the like. As shown in FIG. 9, the reinforcing bottom plate 12 is configured so that the direction of the corrugated core a <b> 4 (the eye direction) is perpendicular to the direction of the corrugated core a <b> 4 of the bottom plate portion 1 (the eye direction). It is affixed to the bottom back surface.

As described above in detail, the long side plate portion 2 is vertically bent and raised along the long side bending groove 7a, so that the corner portion of the bottom plate portion 1 and the long side plate portion 2 is connected to FIG. As shown in FIG. 4, the reinforcing beam material 9 is L-shaped in cross-sectional view and extends over the entire length of the long side, and protrudes from the long side bending groove 7a so as to fill the inside of the corner, and is integrated with the reinforcing beam material 9 over the entire length of the long side. The long side corner presser portion 10 provided continuously is cured and formed.
Moreover, as shown in FIG.1 and FIG.2, as shown in FIG.1 and FIG.2, it protrudes from the short side bend groove | channel 7b so that it may fill the inside of a corner inside the corner part of the continuous corner part of the baseplate part 1 and the short side plate part 3, and a short side. The short side corner presser portion 11 integrally connected to the long side corner presser portion 10 is cured and formed over the entire length in the direction.
As described above, the bottom portion of the heel body A1 of the heel A according to the present embodiment includes the reinforcing beam member 9 that is hardened and formed in the continuous corner portions on both sides of the long side and is provided over the entire length of the long side, and Remains and other accommodations to be accommodated by being held in a fixed shape by the long side and short side internal corner presser portions 10 and 11 that are integrally formed over the entire length along both side corners of the side and hardened. It is strengthened to a practically sufficient load-bearing strength against load loads such as objects.

In the present embodiment, the reinforcing beam member 9 and the long-side inner corner pressing portion 10 are integrally provided at the continuous corner portion of the bottom plate portion 1 and the long side plate portion 2, and the bottom plate portion 1 and the short side plate portion are provided. In order to confirm the load resistance strength of the main body A1 (implemented product) provided with the short side corner presser portion 11 integrally provided with the long side inner corner presser portion 10 at the continuous corner portion with 3 A load bearing strength test (deflection measurement) was attempted under the following test conditions.
This load resistance strength test was performed by observing the amount of deflection at the center of the long side of the bottom portion of the heel body (test body) after leaving it for 24 hours in a state where a load was applied. Moreover, the load-bearing-strength test was done by preparing the rivet body which is not provided with the reinforcing beam material and the long side and short side inner corner pressing portions as a comparative product.
By the way, it is confirmed by a material test (hardness test) that the strength (Hv) of the reinforcing beam member 9 formed by hardening from the filler and the corner pressing portions 10 and 11 on both the long side and the short side is 65 to 75. Has been.

Test conditions a.棺 Body (test body) dimensions: Long side dimension 1900mm, short side dimension 570mm, height dimension
440mm
b.棺 Body (test body) support: Two-point support that supports two places on both sides of the short side with a stand, and the support interval
Is 1700 mm.
c. Test load: 210kg
d. Loading method: Long side centralized loading method (24 hours left)
e. Test environment: Under natural environment (temperature and humidity fluctuations)
(Here, the temperature is 19-26 ° C and the humidity is 74-91%)
f. Test time: left for 24 hours g. Measurement: Deflection amount due to the scale
And measure the amount of deflection at the center of the bottom long side)

  When the load bearing strength test was performed under the test conditions described in detail above, it was confirmed that the deflection amount of the center portion in the bottom long side direction was 10 mm in the implementation product, but 17 mm in the comparison product. . It was also confirmed that the load bearing strength was increased by 40% compared to the comparative product.

As mentioned above, although the specific example of embodiment of this invention was demonstrated in detail, the said detailed embodiment is only an illustration and does not limit a claim. The technical matters described in the scope of claims include any design changes made without departing from the scope of the present invention.
For example, the cross-sectional view shape of the reinforced beam material that is hardened and formed at the continuous corner portions on both long sides of the bottom of the heel body is not limited to the L shape.

  In addition, when the long side folded plate portion is folded and overlapped inside the long side folded plate portion, the corrugated core exists in communication from the long side folded groove portion including the long side folded groove portion to the long side folded plate portion side and the long side folded plate portion side. The filler can be poured and filled into the hollow portion so that the reinforcing beam material over the entire length of the long side is cured and formed in the folded portion of the long side plate portion and the long side folded plate portion. Thereby, it can be expected that the rigidity of the long side wall portion of the heel body is increased and the load resistance strength in the long side direction is further enhanced.

Moreover, the rectangular (rectangular) cardboard box body in plan view according to the present invention can also be applied as a transport box for transporting large fish such as tuna in a box. In this case, it is preferable to assemble and configure the transport box using a development sheet made of reinforced corrugated cardboard such as two or three layers subjected to processing such as water resistance or water repellency. Moreover, the opening part of a transport box is equipped with the inner / outer flap for sealing.
In this way, when used for boxing and transporting large fish, the reinforcing beam material is provided over the entire length of the long side of the continuous corner portion of the bottom plate portion and the long side plate portion of the transport box. The long side inner corner presser that is integrated with the reinforced beam material exists on the entire length of the long side, and the inner side of the corner between the bottom plate and the short side plate is the short side that is integrated with the long side corner presser. Since the corner presser part in the side extends over the entire length of the short side, the corner presser part has a waterproof effect, and the temperature of the water that has entered the box when packing large fish and the outside air after sealing It is possible to prevent dew condensation water due to the difference from entering between the front and back liners of the cardboard. That is, it is possible to prevent the corrugated core, whose strength reduction of the cardboard is avoided, from getting wet with water.

A 棺 桶 A1 棺 body (cardboard box)
A2 Lid a Deployment sheet a1 Top liner a2 Back liner a3 Intermediate liner a4 Corrugated core 1 Bottom plate portion 2 Long side plate portion 3 Short side plate portion 4 Long side folded plate portion 5 Short side folded plate portion 6 Inwardly bent single piece plate Part 7a-7e Bending groove 8 Cavity part 9 Reinforced beam material 10 Long side corner presser 11 Short side corner presser

Claims (5)

A corrugated cardboard box formed by forming a bending groove in a development sheet made of corrugated cardboard and bending the development sheet along the bending groove,
At least a rectangular bottom plate,
A long side plate portion that is connected to the bottom plate portion through a long side bending groove so as to be bent upright; and
A short side plate portion that is connected to the bottom plate portion through a short side bending groove so as to be able to be bent upright, and
The long side bending groove is formed in a direction toward the wavy direction of the corrugated core of the cardboard,
When the long side plate portion is bent and raised along the long side bending groove, the corrugated core hollow portion including the long side bending groove and communicating with the bottom plate portion side and the long side plate portion side is provided. A corrugated box made by pouring and filling a filler having adhesiveness, and hardening and reinforcing a reinforcing beam material over the entire length of the long side at the continuous corner portion of the bottom plate portion and the long side plate portion. body.   The corrugated cardboard box according to claim 1, wherein the reinforcing beam member is hardened and formed in an L shape in a cross-sectional view at the continuous corner portion and is provided over the entire long side. The reinforcing beam material is integrally provided with a corner press portion in the long side formed by protruding and curing over the entire length of the long side in the corner inside the continuous corner portion of the bottom plate portion and the long side plate portion,
When the short side plate portion is bent and raised along the short side bending groove, the long side inner corner pressing portion is poured and filled into the short side bending groove to connect the bottom plate portion and the short side side plate portion. The corrugated cardboard according to claim 1 or 2, wherein the corrugated board is integrally formed with a short side corner pressing portion that is formed by being protruded and hardened over the entire length in the short side direction inside the corner of the provided corner portion. Box body. A long side folded plate portion that is connected to the long side side plate portion through a long side folded bending groove so as to be horizontally folded and overlapped inside the long side plate portion, and a short side folded portion to the short side plate portion A short-side folded plate portion that is arranged continuously inside the short-side side plate portion so as to be horizontally folded and folded through a groove; and
The long side plate part is connected to the long side plate part so as to be vertically inwardly foldable via a side bend groove, and the inside of the short side plate part is overlapped with the inside in a state where the open ends are butted together. A bending single piece plate part,
The short side folded plate portion is formed so as to be flush with the inner side of the short side plate portion together with the inner bent single piece plate portion in a state of being abutted and engaged with the upper side end of the inner bent single piece plate portion. The corrugated cardboard box according to any one of claims 1 to 3, wherein   A cardboard box made by applying the cardboard box according to any one of claims 1 to 4 to a bag body.

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