JP3194019U - Packaging container with water-resistant reinforcing plate - Google Patents

Abstract

The present invention provides a packaging container that can be manufactured at low cost with little reduction in strength due to water immersion and that does not restrict the opening of an opening. In a packaging container in which a reinforcing plate 20 for reinforcing side walls 3 and 4 is inserted in a cardboard container body 1 having water resistance, the reinforcing plate 20 has a cardboard base material 20a made of resin. It is assumed that it is wrapped in the film 24. In such a packaging container, even if the strength of the side walls 3 and 4 of the container body 1 is reduced due to water immersion, the strength of the reinforcing plate 20 is reduced because the base material 20a of the reinforcing plate 20 is wrapped with the film 24. Without doing so, the rolling strength is maintained. In addition, since the container body 1 is not covered with a film and only the base material 20a of the reinforcing plate 20 is wrapped with the film 24, the container body 1 can be manufactured at low cost, and the opening of the container body 1 and the like are restricted. There is nothing. [Selection] Figure 4

Description

  The present invention relates to a packaging container provided with a water-resistant reinforcing plate in order to maintain strength during use in an environment that gets wet with water.

  Conventionally, wooden containers have been mainly used for transporting marine products, but their strength is unlikely to decrease even when wet, but there is also a demand for lightweight and easy-to-handle cardboard containers. However, the strength of corrugated cardboard is significantly reduced when wet.

  Patent Documents 1 and 2 listed below as corrugated cardboard tray-like containers that can improve the stacking strength, which can be used as a countermeasure, include a corrugated cardboard plate between the outer and inner plates of the side wall that stands up from the bottom wall. Is sandwiched between the reinforcing plates bent along the line.

  In addition, as a corrugated tray container provided with water resistance, Patent Documents 3 and 4 listed below cover the entire corrugated cardboard blank with a waterproof film and seal the waterproof film along the periphery of the blank. Has been.

  When these are referred, the packaging container which inserted the reinforcement board in the container main body coat | covered entirely with the waterproof film, provided water resistance, and strengthened the stacking strength can be considered.

Japanese Patent No. 3333161 Japanese Patent No. 3048948 Japanese Utility Model Publication No. 2-31821 Japanese Utility Model Publication No. 52-30322

  However, as described above, the container body is entirely covered with a waterproof film to give water resistance, and when a reinforcing plate is inserted into the container body, along the edge of the slit or hole drilled in the container body It is necessary to seal the waterproof film by fusing or the like, which takes time and cost, and it is difficult to cope with a form having a complicated opening or the like.

  In addition, if a water-resistant cardboard having a high degree of water resistance is used as the packaging container material, the core of the cardboard and the liner itself are considerably expensive.

  Accordingly, an object of the present invention is to provide a packaging container that is less likely to be deteriorated in strength due to water immersion, can be manufactured at low cost, and does not restrict the opening of an opening or the like.

  In order to solve the above-mentioned problems, the present invention provides a packaging container in which a reinforcing plate that reinforces the side wall is inserted into a cardboard container body having water resistance, and the reinforcing plate is made of a cardboard base material. It was wrapped in a resin film.

  Moreover, the said reinforcement board wound the strip | belt-shaped film around the base material, closed the edge part of the film, and prevented the base material from falling out of the film.

  Further, the side wall includes an outer plate and an inner plate, and the reinforcing plate is sandwiched between the outer plate and the inner plate.

  In the packaging container according to this device, even if the strength of the side wall of the container body is reduced due to water immersion, the strength of the reinforcing plate does not decrease and the strength of the stacking strength is increased because the base material of the reinforcing plate is wrapped with a film. Maintained.

  In addition, the container body is not covered with a film, and only the base material of the reinforcing plate is wrapped with the film, so that it can be manufactured at low cost, and the opening of the opening to the container body is not restricted.

The figure which shows the cardboard blank of the base material of the container main body and reinforcement board which concerns on embodiment of this invention A perspective view showing the process of wrapping the same reinforcing plate with a film The perspective view which shows the state which bent the reinforcement board same as the above The perspective view which shows the assembly process of a packaging container same as the above The perspective view which shows the assembly state of a packaging container same as the above Sectional view of the side wall in the length direction

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  This packaging container is in the form of a tray used for transporting marine products and the like, and is assembled from a cardboard blank shown in FIG.

  In the blank of the container main body 1, an outer plate 5, a top plate 6, and an inner plate 7 that form a side wall 3 in the length direction are sequentially connected to a pair of long sides of the rectangular bottom wall 2. On the short side, an outer plate 8, a top plate 9, and an inner plate 10 forming the side wall 4 in the width direction are successively provided.

  Folding pieces 11 and 12 are connected to both end portions of the outer plate 8 and the inner plate 10 of the side wall 4, respectively. The folding pieces 11, 12 are bent from the base to form the side wall 3, and the length thereof is approximately half of the dimension between both side ends of the side wall 3.

  A bottom contact piece 13 is connected to the tip of the inner plate 10. The ruled line at the boundary between the inner plate 10 and the folding piece 12 and the bottom contact piece 13 is a reverse ruled line pressed from the front side of the cardboard so that it is bent in the opposite direction to the other ruled lines pressed from the back side of the cardboard. Yes.

  Two engagement holes 14 are formed in the bottom wall 2 along the boundary between the side wall 3 and the outer plate 5, and two engagement protrusions 15 are provided at the tip of the inner plate 7. Yes. Further, the engagement protrusions 15 are also provided on the folding pieces 11 and 12.

  The outer plate 8 of the side wall 4 is provided with a trapezoidal pushing piece 16 a at a position facing the center of the boundary with the bottom wall 2, and the inner plate 10 has a center of the boundary with the bottom abutment piece 13. A trapezoidal hole 16b is formed at a position facing the portion.

  In the blank of the base material 20 a of the reinforcing plate 20, the frame plate 22 is continuously provided on both sides of the frame plate 21 via ruled lines, and the length of the frame plate 21 substantially matches the dimension between both side ends of the side wall 4. The length of the frame plate 22 is approximately half of the dimension between both side ends of the side wall 3. Further, the frame plate 21 is formed with a trapezoidal hole 23 corresponding to the hole 16b of the inner plate 10 in the middle part of the lower edge.

  As shown in FIG. 2, the blank of the base material 20a as described above is wrapped with a film 24 made of low-density polyethylene excellent in waterproofness. As the film 24, a strip having a width larger than twice that of the substrate 20a is used. Then, the film 24 is wound around the base material 20 a so as to be folded in two, and the end portion of the overlapped film 24 is closed so that the base material 20 a does not come off from the film 24.

  In covering the base material 20a with the film 24, a method of sealing the end of the film 24 by fusing or the like, a method of shrinking the film 24 to shrink and sticking to the base material 20a, and the end of the film 24 can be adopted. A simple method such as bending and fastening with tape can also be adopted.

  As shown in FIG. 3, such a reinforcing plate 20 is used in such a manner that it is folded in a U shape along a ruled line at the boundary between the frame plates 21 and 22 and a pair of them are opposed to each other.

  When assembling the packaging container, as shown in FIG. 4, in the blank of the container body 1, the outer plate 8 is raised from the bottom wall 2, and the folded piece 11 is bent in the direction of the opposite side wall 4. With the engagement protrusion 15 engaged with the engagement hole 14, the reinforcing plate 20 is inserted into the container body 1 such that the frame plates 21 and 22 are along the inner surface of the outer plate 8 and the folding piece 11, respectively.

  Next, the folding plate 12 is bent from the inner plate 10, the top plate 9 and the inner plate 10 are bent from the outer plate 8, and the frame plate 21 is sandwiched between the outer plate 8 and the inner plate 10, thereby forming the side wall 4. And the frame plate 22 is placed along the inner surface of the folded piece 12.

  Subsequently, as shown in FIGS. 5 and 6, the engagement protrusion 15 of the folding piece 12 is engaged with the engagement hole 14, and the bottom contact piece 13 is brought into contact with the upper surface of the bottom wall 2.

  Thereafter, the outer plate 5, the top plate 6 and the inner plate 7 are bent so as to be wound, and the folded piece 11, the frame plate 22 and the folded piece 12 are sequentially sandwiched between the outer plate 5 and the inner plate 7 from the outer side to the inner side 3. And the engagement protrusion 15 of the inner plate 7 is engaged with the engagement hole 14.

  In this assembled state, when the pushing piece 16a is pushed into the overlapped punching holes 16b and 23, a handle hole 16 into which a hand can be put during transportation is formed.

  In the packaging container as described above, even if the strength of the side walls 3 and 4 of the container main body 1 is reduced due to water immersion, the strength of the reinforcing plate 20 is reduced because the base material 20a of the reinforcing plate 20 is wrapped with the film 24. Without increasing the strength of the product during transportation and storage. In particular, since the pair of side walls 3 has a structure in which corrugated cardboard is stacked in five layers, the stacking strength is greatly improved, and can be stacked in multiple stages when transporting and storing heavy marine products. Can be achieved.

  In addition, since the container body 1 is not covered with the film 24 and only the base material 20a of the reinforcing plate 20 is wrapped with the film 24, the container body 1 can be manufactured at low cost, and the container body 1 has openings such as a hand hole 16 and a drain hole. Even if the portion is drilled, it is not necessary to seal the edge thereof, and various forms having complicated openings and the like can be formed.

  In the above-described embodiment, a tray-like shape in which each pair of side walls 3 and 4 of the container body 1 has a frame structure including the outer plates 5 and 8 and the inner plates 7 and 10 is illustrated. Like one of the pair of side walls 3 and 4, only one of which has a frame structure, or a slotted box that bends the flaps extending from the upper and lower ends of the side walls 3 and 4 provided in the circumferential direction. Also in a thing, the reinforcement structure by the reinforcement board 20 is employable.

  Further, the reinforcing plates 20 are opposed to each other in a state of being folded in a U-shape with a pair of band plates, and are inserted into the container body 1 over the entire circumference of each pair of side walls 3 and 4. Although illustrated, the frame plate 22 may be shortened so that a space between the pair of U-shaped reinforcing plates 20 is provided, and the flat reinforcing plate 20 is sandwiched between the side walls 3 and 4. May be. That is, the shape and arrangement of the reinforcing plate 20 may be appropriately changed according to the shape of the container body 1.

  In addition, it is assumed that a corrugated cardboard having a certain level of water resistance is used as the material of the container body 1, but the material of the container body 1 has an appropriate water resistance depending on the article to be stored and the situation at the time of distribution. What is necessary is just to select the corrugated cardboard, cardboard, etc. which have.

  Furthermore, although low density polyethylene was illustrated as a material of the film 24, the film 24 may be made of other materials as long as it is excellent in waterproofness.

DESCRIPTION OF SYMBOLS 1 Container body 2 Bottom wall 3, 4 Side wall 5, 8 Outer plate 6, 9 Top plate 7, 10 Inner plate 11, 12 Folding piece 13 Bottom contact piece 14 Engagement hole 15 Engagement protrusion 16 Hand hook 16a Pushing piece 16b Extraction Hole 20 Reinforcement plate 20a Base material 21, 22 Frame plate 23 Hole 24 Film

Claims (3)

  In a packaging container in which a reinforcing plate (20) for reinforcing the side walls (3,4) is inserted into a water-resistant cardboard container body (1), the reinforcing plate (20) is made of cardboard. A packaging container provided with a water-resistant reinforcing plate, wherein the substrate (20a) is wrapped with a resin film (24).   The reinforcing plate (20) is formed by winding a belt-like film (24) around the base material (20a) and closing the end of the film (24) so that the base material (20a) does not come off from the film (24). The packaging container provided with the water-resistant reinforcing plate according to claim 1.   The side wall (3,4) is provided with an outer plate (5, 8) and an inner plate (7, 10), and between the outer plate (5, 8) and the inner plate (7, 10). The packaging container provided with the water-resistant reinforcing plate according to claim 1 or 2, wherein the reinforcing plate (20) is sandwiched.

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