JPH1016982A - Inner partition body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inner partition body which is easily molded and stacked well and which does not require a large space for keeping it and which is appropriate for the automatic packaging process and which can stably hold a plurality of cylindrical containers contained. SOLUTION: This material is an inner partition body to contain a plurality of cylindrical containers and a folding-up line 1 is provided at the center and partition parts 2 forming right-angled pairs against the folding-up line 1 at both sides of the folding-up line. A pair of containing parts 3 are formed between adjacent two pairs of partition parts 2. When the inner partition body is folded up along the folding-up line 1, at least a part of a pair of containing parts 3 forms a circumferential face getting in contact with a cylindrical container.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition. More specifically, the present invention is easy to mold, has good stackability, requires little space for storage, is suitable for automation of the packaging process, and stably holds a plurality of stored cylindrical containers. About the partition that can be made.

[0002]

2. Description of the Related Art A plurality of cylindrical containers, such as canned foods, are stored and packaged on a daily basis during the distribution process. Conventionally, such packaging is provided with a cardboard partition in a dedicated packaging box, or
The cylindrical container was housed using a synthetic resin sheet molded product in which the partition portion was integrally formed by vacuum molding. FIG.
FIG. 7 is a perspective view of a dedicated packaging box provided with a cardboard partition, and FIG. 7 is a perspective view of a synthetic resin sheet molded product in which a partition is integrally formed. However, conventionally used cardboard partitions require a manual bending process in advance when they are installed in a dedicated packaging box, and it is difficult to automate the packaging process. In addition, there is a problem in that paper scraps are generated due to abrasion of the cardboard and are mixed in the exclusive packaging box. Further, when the cylindrical container is heavy, the partition made of corrugated cardboard collapses, and a gap is easily generated between the container and the packaging. On the other hand, a synthetic resin sheet molded product in which a partition portion is integrally molded is used by being placed in a packaging box, and has a deep drawing tray shape in order to suppress rotation of the cylindrical container. The molded article of the synthetic resin sheet having the deep drawing structure is formed by a vacuum forming method or a vacuum pressure forming method, but the productivity is extremely poor due to the deep drawing structure. In addition, a thin portion is formed at the bottom, which is likely to cause a decrease in strength, cracking, and tearing. Due to its structure, the cylindrical container cannot be held beyond the semicircle. Furthermore, there is a problem that the stackability of the synthetic resin sheet molded product is poor and the space required for storage increases.

[0003]

DISCLOSURE OF THE INVENTION The present invention is easy to mold, has good stackability, requires little space for storage, is suitable for automating the packaging process, and has a plurality of stored cylindrical containers. The purpose of the present invention is to provide a partition body that can be stably gripped.

[0004]

Means for Solving the Problems The inventors of the present invention have made intensive studies to solve the above-mentioned problems, and as a result, have a folded line in the center and a partition portion and a storage portion on both sides thereof. The body was found to be easy to mold, to have little storage space, and to be able to firmly grip the cylindrical container. Based on this finding, the present invention was completed. That is, the present invention provides a partition body for accommodating a plurality of cylindrical containers, having a folded line in the center, and forming a pair substantially perpendicular to the folded line on both sides of the folded line. A pair of storage portions having a pair of adjacent partition portions. When the intermediate partition body is folded and folded along a line, at least a part of the pair of storage portions is a cylindrical container. The present invention provides a partition body characterized by forming a circumferential surface that is in contact with the partition member.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of one embodiment of the partition member of the present invention, and FIG. 2 is a perspective view showing a state where the partition member of FIG. 1 is folded and installed in a packaging box. The partition in this embodiment is for storing four cylindrical containers. The partition of the present invention has a folded line 1 at the center. The structure of the fold line is not particularly limited as long as the partitioning body is bent along the fold line when both sides of the fold line are folded and bent. In the partition body, the fold line is formed as a downwardly convex groove. The middle partition body of the present invention has partition portions 2 on both sides of the bent line, which form a pair perpendicular to the bent line, and a storage portion 3 which forms a pair between two adjacent pairs of partition portions. . The distance between two pairs of adjacent partitions, that is, the length of the storage portion, is substantially equal to the height of the cylindrical container to be stored. When the partition is turned up along the line and installed in the packaging box 4,
The storage section forms a circumferential surface in contact with the cylindrical container, and two pairs of adjacent partitions hold the upper and lower surfaces of the cylindrical container. In the middle partition body of this embodiment, five pairs of partition portions are provided.
It is also possible to omit the pair of partitions and store four cylindrical containers by an intermediate partition having three pairs of partitions.

[0006] The middle partition body of the present invention has a smaller squeeze than the conventional synthetic resin sheet molded product in which the conventional partition portion of the shape shown in FIG. The productivity can be improved in vacuum molding and the like. Also, since the diaphragm of the partition part is shallow, the thickness of the partition part becomes thick when molded from the same thickness of the raw material, and the hollow part is preferably used to firmly grip the cylindrical container and transport it during transportation. There is no possibility that the partition is deformed or crushed. Further, since the stored cylindrical container is not firmly gripped and does not rotate, the printing surface of the cylindrical container always faces in a fixed direction, and a beautiful appearance can be maintained. In a conventional synthetic resin sheet molded product in which a partition portion is integrally formed, the force applied in the axial direction of the cylindrical container is substantially supported at two points at both ends of the arc of the partition portion, whereas the intermediate partition of the present invention is used. In the body, since the force applied in the axial direction of the cylindrical container is supported at the four points at both ends of the two arcs of the paired partitions, the container is more securely held. Further, when the partition portions have the same thickness, it is possible to use a raw material having a smaller thickness as compared with a synthetic resin sheet molded product in which the conventional partition portions are integrally formed, thereby saving raw materials and cost. And contribute to the prevention of environmental pollution. In the intermediate partition of the present invention, the partition preferably has a hollow shape. By making the partition part hollow, when the cylindrical container is stored, the container can be firmly gripped by utilizing the reversible or irreversible deformation of the partition part. In the middle partition body of the present invention, it is preferable that the hollow partition portion has a taper that expands outward. Since the hollow partition portion has a taper that expands outward, it is easy to remove the mold during molding, and it is possible to improve molding productivity. In addition, since the hollow partition portion has a taper that expands outward, the intermediate partition members can be stacked and stored in a state where the partition portion is fitted, and the necessary storage space can be reduced. . Furthermore, since the intermediate partition bodies can be easily removed one by one from the storage state in which the partition portions are fitted, it is suitable for automation of the packaging process. In a conventional synthetic resin sheet molded article in which a partition portion is integrally formed, it is difficult to store the molded product in a state where the partition portion is fitted.
It was not easy to remove them individually.

[0007] In the partition of the present invention, when folded along the folding line, at least a part of the paired storage portions forms a circumferential surface in contact with the cylindrical container. The intermediate partition body of the present invention has a shallower aperture than the conventional synthetic resin sheet molded product in which the conventional partition part is integrally formed even in the storage part, so that the raw material can be prevented from being excessively thinned, and the cylindrical shape can be prevented. The container can be firmly gripped. In the partitioning body of the present invention, the arc length of the circumferential surface in contact with the cylindrical container formed by the storage portion is not particularly limited, and may be, for example, a semicircular surface, The shape can be slightly larger, can be almost the entire circumferential surface, or can be smaller than the semicircular surface. Usually, it is preferable to have a semicircular surface, and it is possible to suitably fold and raise the partition, install it in a packaging box, store a cylindrical container, and to automate the packaging process. Is also preferably a semicircular surface or a shape close thereto. However, in order to grip the cylindrical container particularly strongly, a circumferential surface having an arc length exceeding the semicircular surface can be formed. For example,
The cylindrical container can be taken out from the packaging box while giving a deformation to the partition body, with the circumferential surface formed by the storage portion being a circumferential surface slightly larger than the semicircular surface. In addition, with the circumferential surface formed by the storage portion being almost the entire circumferential surface, the cylindrical container is taken out of the packaging box while being stored in the partition,
The cylindrical body can be opened and individual cylindrical containers can be taken out. When the circumferential surface formed by the storage portion exceeds the semicircular surface, it is necessary to place the cylindrical container on the intermediate partition and then fold it up, but the gripping state of the cylindrical container is extremely strong. It will be. In a conventional synthetic resin sheet molded product in which a partition portion is integrally formed, it is impossible to form a circumferential surface exceeding a semicircular surface.

FIG. 3 is a plan view and a front view of another embodiment of the partition member of the present invention. The intermediate partition body of the present embodiment has a downwardly convex groove as a bent line 1, includes a hollow partition part 2 and a storage part 3, and has peripheral edge parts 5 on both sides in the axial direction of the cylindrical container to be stored. And a circumferential surface in contact with the cylindrical container is provided as a pair of circumferential surfaces 6 in a pair of storage portions, and another portion of the storage portion forms a bulge 7. 4A is a diagram illustrating a cross-sectional shape of a partition section taken along line AA of FIG. 3, and FIG. 4B is a diagram illustrating a cross-sectional shape of a circumferential surface taken along line BB of FIG. FIG. 4 (c) shows C- in FIG.
It is a figure which shows the cross-sectional shape of the bulge of C line. In the middle partition body of this embodiment, the thickness of the hollow partition portion is slightly smaller at the center than at both ends of the partition, and the length of the storage portion is slightly wider at the center than at both ends. By forming the partition portion in such a shape, storage of the cylindrical container in the folded-up partition body becomes easier, which is convenient for automation of the packaging process. The peripheral portions provided on both sides of the partition in this embodiment, when the partition is folded and installed in a packaging box, exhibits elasticity as a cushioning material due to its elasticity. The separated partition body can maintain a stable position in the packaging box. In the middle partition body of this aspect, two circumferential surfaces are provided in the pair of storage portions, and the other portions are bulged. By providing a bulge in the storage portion, it is possible to prevent the partition body storing the cylindrical container from rotating in the packaging box. FIG. 5 is an explanatory diagram showing a use state of the partition body of the present invention. The folded-up partitioning body is held in a stable state by being inscribed in the packaging box 4 at the peripheral portion 5 and the convex portion forming the folded-up line 1, and the cylindrical container 8 is housed therein. In the middle partition body of the present invention, the shape of the storage portion can be arbitrarily determined as needed. For example, the circumferential surface and the bulge can be provided completely opposite to the embodiment shown in FIG. If the bulge is further enlarged and the tip of the bulge is located outside the fold line with the middle partition body folded up, the middle partition body can be extended to the tip of the bulge without using a packaging box. Can be used as a self-supporting package. The partition body of the present invention,
By selecting the shape of the storage portion, it is possible to form a partition for storing not only a cylindrical container but also containers of various shapes. When the partition is folded up along the line, by forming a surface in contact with a container to be stored in at least a part of the paired storage units,
It can be used as a partition for accommodating an elliptical cylindrical container, a square cylindrical container, a truncated square pyramid container, or the like.

The material for forming the partition of the present invention is not particularly limited. For example, a hard synthetic resin single-layer sheet, a composite sheet of a hard synthetic resin sheet and a foamed resin sheet,
A composite sheet of a hard synthetic resin sheet and a soft synthetic resin sheet can be used. The foamed resin sheet and the soft synthetic resin sheet provide buffering properties, reduce impact due to collision or the like in a state where the cylindrical container is stored in the packaging box, and can further increase the protection effect. As a raw material of the synthetic resin sheet, for example, propylene homopolymer, propylene-ethylene copolymer (ethylene content 1 to 1)
Olefin resins such as high-density polyethylene, or mixtures of these olefin resins, polystyrene, polyvinyl chloride, acrylonitrile-butadiene resin, and amorphous polyethylene terephthalate resin. The thickness of the synthetic resin sheet is not particularly limited and can be appropriately selected depending on the weight and size of the cylindrical container to be stored, but from the viewpoint of strength and economy, the thickness is 0.2 to 2.2. A synthetic resin sheet having a thickness of 0 mm is preferable, and a synthetic resin sheet having a thickness of 0.3 to 1.2 mm is more preferable. When the thickness of the synthetic resin sheet is less than 0.2 mm,
The rigidity of the partition may be insufficient. If the thickness of the synthetic resin sheet exceeds 2.0 mm, the shapeability during molding may be poor. As the foamed resin sheet, in addition to the synthetic resin and the synthetic resin containing an inorganic filler, medium-density polyethylene, low-density polyethylene, and linear low-density polyethylene can be suitably used. The expansion ratio of the foamed resin sheet is preferably from 1.1 to 30 times, and more preferably from 1.3 to 5 times in consideration of the balance between the buffering property and the strength. If the expansion ratio is less than 1.1 times, the effect of imparting cushioning properties may be poor. If the expansion ratio exceeds 30 times, the mechanical strength may be insufficient. The thickness of the foamed resin sheet is preferably from 0.1 to 0.5 mm. As the composite sheet, a foamed sheet of the buffer layer or a two-layer structure of a soft resin sheet and a hard synthetic resin sheet containing a filler, or a hard synthetic resin sheet laminated on both sides with the foamed sheet of the buffer layer in between. Three-layer structure,
A three-layer structure in which a buffer layer is laminated on both sides with a hard synthetic resin sheet in between may be used. These composite sheets are formed into a two-layer or three-layer composite sheet by an extruder.
It can be manufactured by extrusion lamination or by coextrusion.

The synthetic resin sheet forming the partitioning body of the present invention may optionally contain an inorganic filler. As the inorganic filler to be blended, for example, talc,
Examples thereof include calcium carbonate, mica, titanium oxide, iron oxide, clay, carbon black, white carbon, barium sulfate, and aluminum hydroxide. Since the rigidity of the obtained synthetic resin sheet varies depending on the type of the inorganic filler to be mixed, it is preferable to select the inorganic filler in consideration of this point. The inorganic filler is a synthetic resin 100
It is preferable to mix 10 to 100 parts by weight per part by weight.
It is more preferable to add 20 to 80 parts by weight per 0 parts by weight. When the amount of the inorganic filler is less than 10 parts by weight per 100 parts by weight of the synthetic resin, the rigidity may be insufficiently expressed. Synthetic resin 10
If it exceeds 100 parts by weight per 0 parts by weight, the synthetic resin sheet may become brittle. Further, in order to improve the impact resistance of the synthetic resin sheet, an impact resistance improving resin suitable for each resin can be blended as required. The method for forming the partition body of the present invention is not particularly limited, and it can be formed by any known method such as vacuum forming, vacuum pressure forming, and pressure forming. The partitioning body of the present invention has a folding line disposed in the center of the partitioning body, and along the folding line, a storage portion having a circumferential surface provided on both sides of the folding line, and a folding portion connected thereto. Since the partitioning portion perpendicular to the rising line is stored in the packaging box along the cylindrical container, the partitioning portion has a fixing performance for sufficiently preventing rotation, vibration, and protrusion of the cylindrical container, which is the contents of the packaging box. The intermediate partition body of the present invention has a structure that is not a deep drawing structure as compared with a conventional synthetic resin sheet molded product in which a partition portion is integrally molded, so that it can be easily removed from a molding die and productivity is higher than that of an integrally molded product. Increase significantly. In addition, since the partition members are lightweight and the partition members can be stacked one on another, storage and transportation of a large number of partition members are facilitated. In a partition using a composite sheet of a hard synthetic resin sheet and a foamed resin sheet, the cushioning action of the foamed sheet is exhibited, and the protective effect of the cylindrical container in the packaging box is increased. Further, when a synthetic resin sheet mixed with an inorganic filler is used, incineration after disposal is easy.

[0011]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention. Example 1 0.7 g of melt index according to JIS K 6758
100 parts by weight of propylene-ethylene block copolymer (ethylene content 15% by weight) / 10 minutes, 40 parts by weight of talc, 2 parts by weight of organic coloring agent, 0.2 parts by weight of phenolic antioxidant, phosphorus-based oxidation A 0.3 mm thick extruded sheet obtained by mixing 0.2 parts by weight of an inhibitor, 0.2 parts by weight of an amine-based processing aid and 0.2 parts by weight of a metal stearate as a lubricant is used for vacuum forming. By vacuum forming method using a mold,
A partition body having a shape similar to the shape shown in FIG. 3 was formed.
The plane shape of the middle partition body before being folded along the fold line is a rectangle of 140 mm × 280 mm, and a storage portion having a circumferential surface with a radius of 42 mm is provided on the left and right of the fold line, and the storage portion has A concave portion is provided so as to be a reinforcing rib when folded up along the folding line. The number of hollow partitioning portions connected to the storage portion and perpendicular to the fold line is six pairs, and the height thereof is 18 mm higher than the bottom surface before bending. The length of the storage portion between the two pairs of partition portions is 46 mm, and the thickness of the hollow partition portions is 5 mm for the two pairs at both ends and 10 mm for the inner four pairs. Further, the corners of the partition near the fold line are cut out so as not to hit each other when the fold is made. Fig. 5
As shown in the above, the sheet was folded along the folding line and placed in a packaging box having an in-plane method of 100 mm × 85 mm and a length of 280 mm. Five canned crab crabs having a diameter of 84 mm and a height of 42 mm were stored in the storage portion of the inner partition body. JIS Z 02 for packaging boxes containing canned crabs
A vibration test was performed according to No.32. After the test was completed, the rotation and protrusion of five canned crab crabs were visually inspected, but no abnormality was found. The number of the partition members used in the present example is 30 when stacked up to a height of 100 mm.
With a single sheet, a large number of partition bodies could be stored in a small storage area. Example 2 Co-extrusion was performed using a synthetic resin composition having the same composition as in Example 1 and a synthetic resin composition obtained by further adding 2.0 parts by weight of a baking soda / citric acid-based blowing agent as a blowing agent to the composition. To create a composite sheet. The thickness of the upper non-foamed sheet is 0.2 mm, and the thickness of the lower foamed sheet is 0.2 mm. This composite sheet was formed by a vacuum and pressure forming method using a vacuum and pressure forming mold to obtain a partition having the same shape as in Example 1. After placing 5 canned boiled red beans with a diameter of 84 mm and a height of 42 mm on this middle partition so as to fit in the storage sections provided on both sides of the folding line, the middle partition was folded up. It was set in a packaging box having a consistent in-plane method of 100 mm x 85 mm and a length of 280 mm, and was in the state shown in FIG. For the packaging box containing the canned boiled red beans, the bottom surface of the box placed on the testing machine dropping base was moved in the direction of gravity by a packaged cargo drop tester DT-50 manufactured by Yoshida Seiki Co., Ltd. Naturally dropped from a height of 40 cm. After the test,
The rotation and protrusion of five canned boiled red beans were visually inspected, but no abnormality was found. Further, the canned boiled red beans were taken out of the packaging box and visually inspected for the appearance, but no dents were found in the canned boiled red beans. The number of partition members used in this example was 25 when stacked up to a height of 100 mm, and a large number of partition members could be stored in a small storage place. Comparative Example 1 Melt Index 0.7 g according to JIS K 6758
100 parts by weight of propylene-ethylene block copolymer (ethylene content 15% by weight) / 10 minutes, 40 parts by weight of talc, 2 parts by weight of organic coloring agent, 0.2 parts by weight of phenolic antioxidant, phosphorus-based oxidation From an extruded sheet having a thickness of 0.3 mm obtained by mixing 0.2 parts by weight of an inhibitor, 0.2 parts by weight of an amine-based processing aid, and 0.2 parts by weight of a metal stearate as a lubricant, a metal for vacuum forming is prepared. By vacuum forming method using a mold,
A synthetic resin sheet molded article in which a partition having a shape similar to the shape shown in FIG. 7 was integrally molded was molded. The planar shape of the synthetic resin sheet molded product is a rectangle of 100 mm × 280 mm with a radius of 4 mm.
5 storage units of 46 mm length with 2 mm circumference, thickness 5
It has two partition portions of 2 mm at both ends and four partition portions of 10 mm in thickness on the inside. This synthetic resin sheet molded product was placed in a packaging box having an in-plane method of 100 mm × 85 mm and an in-length method of 280 mm, and five canned boiled red beans having a diameter of 84 mm and a height of 42 mm were stored in a storage portion. For the packaging box containing the canned boiled red beans, the bottom surface of the box placed on the testing machine dropping base was moved in the direction of gravity by a packaged cargo drop tester DT-50 manufactured by Yoshida Seiki Co., Ltd. Naturally dropped from a height of 40 cm. After completion of the test, the rotation and protrusion of five canned boiled red beans were visually inspected. As a result, some voids were found in the three insides, and traces of movement of the can were observed. In addition, the canned boiled red beans were taken out of the packaging box and visually inspected for the appearance, but no dents were found in the canned boiled red beans. In addition,
The synthetic resin sheet molding used in this comparative example has a height of 100
When stacked up to mm, the number of sheets was 10, and many places were required for storage. Comparative Example 2 A single corrugated cardboard having a width of 85 mm and a length of 556 mm was bent with the liner surface outside in the state shown in FIG. In the storage section, diameter 84mm, height 42
Five cans of mm-boiled red beans were stored. The box for packaging containing the canned boiled red beans was placed on the base for dropping the tester using the DT-50 packaged cargo drop tester manufactured by Yoshida Seiki Co., Ltd. Was dropped naturally from a height of 40 cm. After the test, three canned boiled red beans were rotating. Further, when the canned boiled red beans were taken out of the exclusive box for packaging and visually inspected for the appearance, one canned boiled red bean had a dent.

[0012]

The partitioning body of the present invention is easy to form, requires little space for storage, is easy to handle, and is suitable for automation of the packaging process. There is no danger of rotation or breakage of the container.

[Brief description of the drawings]

FIG. 1 is a perspective view of one embodiment of a partition body of the present invention.

FIG. 2 is a perspective view showing a state in which the partition body in FIG. 1 is folded up and installed in a packaging box.

FIG. 3 is a plan view and a front view of another embodiment of the partition body of the present invention.

FIG. 4 is a view showing a cross-sectional shape of the partition body in FIG. 3;

FIG. 5 is an explanatory view showing a use state of the partition body of the present invention.

FIG. 6 is a perspective view of an exclusive packaging box provided with a cardboard partition;

FIG. 7 is a perspective view of a synthetic resin sheet molded article in which a partition portion is integrally molded.

[Explanation of Signs] 1 Folded line 2 Partition part 3 Storage part 4 Packing box 5 Peripheral part 6 Circumferential surface 7 Bulging 8 Cylindrical container

Claims (1)

[Claims] 1. A partitioning body for accommodating a plurality of cylindrical containers, the partitioning portion having a bent line in the center, and forming a pair on both sides of the bent line and substantially perpendicular to the bent line. Having a pair of storage sections between adjacent two pairs of partition sections, and when the intermediate partition body is folded and folded along a line, at least a part of the pair of storage sections is a cylindrical container. A partition body characterized by forming a circumferential surface in contact therewith.