JP2007331798A - Pulp mold buffering material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pulp mold buffering material which has a plurality of hollow projections (14) projecting from a pulp mold plate that can be folded into a solid structure, facilitates assembling of the solid structure, and enable sure retention of the assembled solid structure. <P>SOLUTION: The plate (10) is cut by a given length from one side of the plate (10) to form a cut line (13) open to the one side, and a first folding line (11) is formed to be continuous with the cut line (13) on the same line. A second folding line is so formed as to pass through a closed end of the cut line (13) and to be perpendicular to the first folding line (11). Both portions located on both sides of the cut line (13) are formed as second buffering portions (10a) and (10b), respectively. The second buffering portions (10a) and (10b)overlap each other when the plate (10) is assembled into the solid structure, and one of both second buffering portions is provided with engaging portions (15) to be engaged with projections (14) formed on the other of both second buffering portions. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a cushioning material used when packing an article to be packed, and in particular, to a pulp mold cushioning material composed of a pulp mold.

  Conventionally, as a cushioning material used when packing products such as water heaters and gas tables, foamed polystyrene molded bodies and corrugated cardboard assemblies have been used. From the viewpoint of protecting the natural environment, packing materials made of pulp molds mainly made of used paper such as newspaper are attracting attention as resource recycling.

The pulp mold can be molded into various shapes by using a mold. For example, as shown in FIG. 9, the pulp mold is contracted toward the one end (2a) side of the plate-like body (20) toward the tip. Patent Document 1 discloses a pulp mold cushioning material (2) having a configuration in which a plurality of hollow cap-shaped projections (21) having a diameter are integrally projected in parallel.
In this case, a plurality of protrusions (21) support the object to be packed in a dot shape to obtain a good cushioning property, and the number of protrusions (21) corresponding to the weight of the object to be packed is plate-shaped. By providing the body (20), sufficient rigidity can be expected.

Also, it can be assembled into a three-dimensional structure as shown in the figure if it is bent along two fold lines (22) that pass between the protrusion (21) and the protrusion (21) and are orthogonal to each other. Thus, the corner portion of the box-shaped package can be protected.
JP 2005-350122 A JP 2005-263231 A

However, even if the conventional pulp mold cushioning material is bent to form a three-dimensional structure as shown in FIG. 9, it will return to its original plate shape due to the repulsive force of the material itself, and retain the three-dimensional shape. Difficult to do. In order to hold the three-dimensional structure, fixing with an adhesive tape or the like can be considered, but there is a problem that extra cost and labor are required and waste is increased.
In addition, although it is possible to manufacture a three-dimensional structure in advance, there is a disadvantage that the three-dimensional structure is inferior in stacking efficiency and bulky during stock storage and transportation.

  The present invention has been made in view of such a point, and “a pulp mold cushioning material having a configuration in which a plurality of hollow protrusions are protruded from a pulp mold plate-like body, and the plate-like body is bent. It is an object of the present invention to make it easy to assemble a three-dimensional structure and to reliably hold the three-dimensional shape after assembling.

(1) The pulp mold cushioning material of the invention according to claim 1, “forms a cut line that cuts a predetermined length from one side of the plate-like body and opens to the one side,
A first fold line is provided so as to be continuous on the same line as the score line, and a second fold line passing through the closed end of the score line and perpendicular to the first score line is formed,
The parts located on both sides of the score line are the first and second buffer parts, and the first and second buffer parts are configured to overlap in the three-dimensionally assembled state,
One of the first and second buffer portions is provided with an engaging portion that engages with the protrusion provided on the other when the two are overlapped ”.

The plate-like body is divided into a plurality of components by a cut line, a first fold line that follows this, and a second fold line that is perpendicular thereto. The two portions located on the cut line side and on both sides of the cut line with respect to the second fold line are the first and second buffer portions, respectively, and the portion connected to the first buffer portion via the second fold line is For example, the third buffer portion is a portion that is connected to the second buffer portion via the second folding line, for example, the fourth buffer portion, and the first buffer portion and the third buffer portion, and the second buffer portion and the fourth buffer portion. The first and second fold lines are bent in the same direction so that the first buffer portion and the third buffer portion and the fourth buffer portion are positioned at right angles. As a result, the first and second buffer portions overlap each other, and the three-dimensional structure is configured by the overlapped portion and the third and fourth buffer portions positioned at right angles thereto. At this time, the first and second buffer portions are held in an overlapped state by engaging the projection portion provided on one of the first and second buffer portions with the engaging portion provided on the other. As long as the engagement between the protrusion and the engaging portion is not intentionally released, the three-dimensional structure can maintain its shape.
In addition, as an engagement part, the thing of the projection shape which fits in a hollow projection part like the thing of the below-mentioned Claim 2, and if other engagement is possible with respect to a projection part, it is other It may be a shape.
Further, in order to make it easier to bend the plate-like body along the first and second fold lines, the groove is formed along the first and second fold lines as in the pulp mold cushioning material of the invention according to claim 3 described later. In addition, a perforation may be formed, or a thin wall may be formed by pressing.

  (2) The pulp mold cushioning material of the invention according to claim 2 is the pulp mold cushioning material according to claim 1, wherein the protrusion is formed in a cap shape whose diameter is reduced toward the tip, The joint portion is a small projection having a size that can be fitted into the projection portion, and the projection portion and the small projection are all bent in the folding direction in which the plate-like body is folded along the first and second folding lines. The projection is configured in a cap shape that is reduced in diameter toward the tip, and the engagement portion is a small size that can be fitted into the projection. It is configured as a protrusion. The engaging portion may have a hollow cap shape similar to the protruding portion, and may not necessarily be hollow as long as it can be fitted into the protruding portion.

Fold the plate-like body along the first and second fold lines so that the protruding portion and the engaging portion protrude outward, overlap the first and second buffer portions, and fit the engaging portion into the protruding portion In other words, as described in the operation of the first aspect, the three-dimensional structure in which the protrusions having the same height are projected outward from all of the components.
When this three-dimensional structure is stored in an outer box together with an article to be packed, it can be supported so as to cover the corner portion of the article to be packed with the inner surface of the plate-like body from which the protruding portion does not protrude. At the same time, the outer surface of the plate-like body is positioned away from the inner surface of the outer box by the height of the protruding portion, and the packaged item is in a packing form that is supported in the form of dots by the protruding portion.

  Further, the small protrusions are also formed in the same hollow cap shape as the protrusions, and in the case where the same number as the protrusions is provided, the plate-like bodies overlap at the same time where the first and second buffer portions overlap, All the cap-shaped protrusions overlap with the cap-shaped engaging portion in a double manner to form a double cap structure. By setting it as a double cap structure, higher intensity | strength and buffering performance can be obtained than a single cap structure.

  (3) The pulp mold cushioning material of the invention according to claim 3 is the pulp mold cushioning material according to claim 1 or 2, wherein “the first and second folding lines of the both sides of the plate-like body are aligned. The plate-like body can be easily folded along the first and second folding lines.

  As described above, according to the first aspect of the present invention, the three-dimensional structure can be formed by folding the plate-like body along the first and second fold lines, and the first and second buffer portions that overlap each other. The shape of the three-dimensional structure can be maintained by merely engaging the engaging portion provided on the other with the protrusion provided on one of the three-dimensional structure. Assembling becomes easy, and the three-dimensional shape can be securely held. Thereby, since the assembly at the site of the packing operation can be performed easily and quickly, it can be laminated in the form of a plate at the time of storage and transportation, and can be stored and transported with low bulk.

  In addition, since the shape of the three-dimensional structure after assembly can be securely held, when the three-dimensional structure is stored in the outer box in advance, the shape of the three-dimensional structure is changed before storing the package object. There is no inconvenience such as collapse and time-consuming packing work. Therefore, the efficiency of packing work is improved.

  According to the second aspect of the invention, in addition to the above-described effect, the protruding portion is protruded outward from the three-dimensional structure, and the object to be packed is received by the inner surface where the protruding portion does not protrude. It is easy to store the packaged body within the range surrounded by the three-dimensional structure disposed in the box.

  Further, in the packaged state, the packaged body is supported in the form of dots by the same height projection, so the packaged item is approximately the height of the projection from the bottom and side surfaces of the outer box. It is stored in a state of being evenly separated and can receive an impact from any surface evenly. Further, by supporting the object to be packed in a dot shape by the protrusions, the force is dispersed and the impact on the object to be packed can be reduced.

  In the portion where the first and second buffer portions overlap, the plate-like body overlaps at the same time, and at the same time, the small protrusion-like engagement portion is fitted inside the protrusion, so that greater strength and buffering properties are obtained. I can expect. In particular, when the small protrusion is formed in the shape of a hollow cap like the protrusion, a double cap structure is formed by the protrusion and the small protrusion fitted therein, and double cushioning properties are further improved. In this way, the portion where the first and second buffer portions overlap is superior in buffering due to the double plate structure and the double cap structure, as compared to the other component parts composed of the single plate structure and the single cap structure. effective.

  According to the invention of claim 3, by making the plate-like body easily bendable along the first and second fold lines, the plate-like body is restored to the original state by the repulsive force of the material itself. Inconvenience can be further prevented.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
The pulp mold cushioning material according to the first embodiment of the present invention is a pulp mold cushioning material (1) for packaging a water heater installation box (3) as an article to be packed, FIG. 1 is an exploded perspective view showing a state in which a metal box (3) is stored in an outer box (31) using a pulp mold cushioning material (1).

The water heater installation box (3) is a rectangular hollow box with a door (30) that opens to the front, and is installed in each door so that it faces the corridor of an apartment, etc. The container is stored and used.
The box (3) is packed with the door (30) lying on its side so that the door (30) is located above, and the cushioning material (1) is formed by assembling a pulp mold at each corner (3a) on the back that will be the lower surface at that time Is used.

  The pulp mold is obtained by adsorbing a pulp mold slurry obtained by melting waste paper such as newspapers to a mold, and through dehydration and drying steps. The embodiment of the present invention has a thickness of about A plurality of hollow protrusions (14) are molded into a shape projecting integrally from a 3 mm plate (10). As shown in FIG. 2, the plate-like body (10) has a long side length of about 280 mm and a short side so that five rows in the long side direction and four rows of protrusions (14) in the short side direction protrude. The one cut into a rectangular shape having a length of about 222 mm is used as one pulp mold cushioning material (1), and each protrusion (14) is formed in a cap shape whose diameter decreases toward the tip.

  By cutting two projections (14) from one short side of the rectangular plate-like body (10) along the center line passing through the center of the short side, the one short side is opened. A cut line (13) is provided, and a first fold line (11) is provided in a range from the closed end of the cut line (13) to the other short side along the center line. A second fold line (12) passing through the closed end of the cut line (13) and orthogonal to the first fold line (11) is provided from one long side to the other long side of the plate-like body (10). It has been.

Further, shallow grooves (11a) (12a) are provided along the first fold line (11) and the second fold line (12).
As a result, the plate-like body (10) is divided into four parts, with the first and second fold lines (11), (12) and the cut line (13) as the boundary lines, and positioned on both sides of the cut line (13). The first and second buffer portions (10a) and (10b) are used as the first and second buffer portions, and the third buffer portion is connected to the first buffer portion (10a) via the second fold line (12). (10c) Similarly, a portion continuing to the second buffer portion (10b) via the second fold line (12) is defined as a fourth buffer portion (10d).

  The protrusions (14) formed on each of the second, third, and fourth buffer portions (10b), (10c), and (10d) have an inner diameter of about 50 mm at the open end and an inner diameter of about 25 mm at the bottom. In contrast to the hollow cap shape of about 40 mm, the one formed in the first buffer portion (10a) has an outer diameter of about 47 mm at the open end, an outer diameter of the bottom portion of about 30 mm, and a height of about A hollow cap-shaped small protrusion (15) having a size of 30 mm, which is slightly smaller than the protrusion (14).

  Since the first fold line (11) and the second fold line (12) are formed with the grooves (11a) and (12a) as described above, the open ends of the protrusion (14) and the small protrusion (15) are formed. It is easy to bend in the direction in which they are close to each other (valley fold). Therefore, the first buffer portion (10a) and the third buffer portion (10c), the second buffer portion (10b) and the fourth buffer portion (10d), and the third buffer portion (10c) and the fourth buffer portion (10d). ) Are valley-folded along the first and second fold lines (11) and (12) so as to be positioned at right angles, as shown in FIG. A double-structured bottom part (16) is formed on top of the part (10b).

When the first buffer portion (10a) and the second buffer portion (10b) overlap, the four small protrusions (15) provided on the first buffer portion (10a) are formed on the second buffer portion (10b). It fits in four provided projections (14). Since the protrusion (14) and the small protrusion (15) are set to the above-described dimensions, as shown in FIG. 4, the small protrusion (15) just fits into the protrusion (14) and the small protrusion (15 ) Does not inadvertently escape from the protrusion (14). Thus, in this embodiment, the small protrusion (15) functions as an engaging portion, and the first buffer portion (10a) and the second buffer portion (10b) are maintained in an overlapping state.
As a result, the pulp mold cushioning material (1) is formed from the three parts of the third cushioning part (10c), the fourth cushioning part (10d), and the bottom part (16) located at right angles to each other as shown in FIG. And the three-dimensional structure having a shape in which the protrusion (14) protrudes outward from all of the third buffer (10c), the fourth buffer (10d), and the bottom (16). It will be.

  That is, the pulp mold cushioning material (1) according to the embodiment of the present invention can be easily assembled into a three-dimensional structure without using a fixing member such as an adhesive tape at the site of packing work. Since the structure does not carelessly return to the original flat plate shape, the shape as a three-dimensional structure can be reliably maintained.

  Thus, since the pulp mold cushioning material (1) has a flat plate shape as shown in FIG. 2 before assembling, it can be loaded in this state. Therefore, the bulk at the time of storage and transportation can be reduced, and it is easy to use.

  As mentioned above, using the pulp mold cushioning material (1) as a three-dimensional structure consisting of three components positioned at right angles to each other, the box (3) for hot water heater installation as an item to be packed is an outer box. In order to store in (31), the bottom (16) of the three-dimensional structure is the lower surface and the third and fourth buffer parts (10c) (10d) are externally mounted on the corner of the bottom of the outer box (31) in advance. The pulp mold cushioning material (1) is set so as to correspond to the side surface of the corner portion of the box (31).

  Since the pulp mold cushioning material (1) does not inadvertently return to the original flat plate shape after being assembled into a three-dimensional structure, the shape as a three-dimensional structure is formed at each corner portion of the outer box (31). Can be set while maintaining.

A pair of lower shock-absorbing plates (32), (32) made of corrugated cardboard having a substantially L-shaped longitudinal section and a substantially U-shaped transverse section are positioned at both ends in the short side direction of the outer box (31). Store the box (3) in the outer box (31), which is laid on the bottom (16) of the pulp mold cushioning material (1) and (1) and laid down so that the door (30) is located on the upper surface. To do.
As a result, each corner portion (3a) on the back surface of the box (3) is stored in the outer box (31) in a manner protected by the lower buffer plate (32) and the pulp mold buffer material (1). The two side surfaces of the corner portion (3a) are supported by the projections (14) projecting from the third and fourth buffer portions (10c) and (10d), respectively, and at the same time, the corner portion (3a ) Is supported by four protrusions (14) in which double plate-like bodies (10) and small protrusions (15) are fitted.

  In particular, as described above, the bottom (16) of the pulp mold cushioning material (1) that supports the lower surface of the corner (3a) where the weight of the box (3) is applied is the first and second cushioning portions (10a) ( 10b) is overlapped to form a double plate structure (10) and a double cap structure in which a small protrusion (15) is fitted into the protrusion (14). The strength and cushioning properties are superior to those of the portion, and a large cushioning effect can be obtained.

  Further, in this embodiment, from the pulp mold cushioning material (1) in a state of being assembled into a three-dimensional structure, since the protruding portion (14) of the same height protrudes outward, the outer box ( When the box (3) is stored in 31), the box (3) is stored in a state separated from the surface of the outer box (31) by the height of the protrusion (14).

  After storing the box (3) in the outer box (31), the cover sheet (34) is covered above the door (30), and the upper buffer plates (33) (33) are installed on the cover (34). If the upper part of the outer box (31) is closed by the four cover pieces (35) of the box (31), the packing operation of the box (3) is completed.

What is shown in FIG. 5 is a development view of the pulp mold cushioning material (1) of the second embodiment, and FIG. 6 is an explanatory view showing a use state.
This is the same as that of the first embodiment described above, from a substantially rectangular plate-like body (10) in which a large number of hollow cap-like projections (14) and small projections (15) are projected. The first and second fold lines (11) and (12) are two in parallel with the short side (17) and the long side (18) of the plate-like body (10), each at a predetermined interval. Both long sides (10) of the plate-like body (10) from the four intersecting points of the first and second fold lines (11) and (12) along the extended line of the first fold line (11). 18) Four cut lines (13) open to (18) are formed.

  The plate-like body (10) of this embodiment is divided into nine parts by two first and second bending lines (11), (12) and four cut lines (13). The portion located at the corner of the body (10) and surrounded by the cut line (13) and the second fold line (12) serves as the first buffer (10a) and the first buffer ( A portion located between the cut lines (13) and (13) between 10a and (10a) is defined as a second buffer portion (10b). In other words, the first and second buffer portions (10a) and (10b) are located on both sides of the cut line (13), and similarly, the second bend line (12) is connected to the first buffer portion (10a). The portion that is continuous is the third buffer portion (10c), and the portion that is continuous to the second buffer portion (10b) via the second fold line (12) is the fourth buffer portion (10d).

The four first buffer parts (10a) are provided with small protrusions (15), and the other second to fourth buffer parts (10b), (10c) and (10d) are provided with small protrusions (15). A protrusion (14) capable of being fitted inside is provided. The number of protrusions (14) provided on the second buffer portion (10b) is equal to the two first buffer portions (10a) (10a) located on both sides of the second buffer portion (10b) via cut lines (13) and (13). More than the total number of small protrusions (15) of 10a) are provided.
In this embodiment, each of the first buffer portions (10a) is provided with four small protrusions (15), and the second buffer portion (10b) is provided with eight protrusion portions (14). .

  When the plate-like body (10) is bent along the first and second fold lines (11) and (12), as shown in FIG. 6, the fourth buffer portion (10d) serves as the bottom surface, and the second and third buffer portions are formed. While the four sides are constituted by the parts (10b) and (10c), an open box-shaped three-dimensional structure is assembled.

At this time, the first buffer portion (10a) and the second buffer portion (10b) are overlapped, and a small protrusion (1a) of the first buffer portion (10a) is placed in the protrusion portion (14) in the second buffer portion (10b). By fitting 15), the box-like shape can be maintained, and the side surface of the second buffer portion (10b) has a double structure with the first buffer portion (10a).
In this case, as shown in FIG. 6, for example, the rectangular packaged body (4) can be used by being attached to the one end so as to cover all four corners at one end.

What is shown in FIG. 7 is a developed view of the pulp mold cushioning material (1) of the third embodiment, and FIG. 8 is an explanatory view showing the use state thereof.
The pulp mold cushioning material (1) of this embodiment is provided on both sides of the third and fourth cushioning portions (10c) (10d) of the pulp mold cushioning material (1) employed in the first embodiment described above. The first and second buffer portions (10a) and (10b) are connected to each other via the second fold line (12), and the first and second buffer portions (10a) and (10b) are interposed between the first and second buffer portions (10a) and (10b). In each case, a score line (13) is formed. In this case, when the first and second fold lines (11) and (12) are bent and assembled into a three-dimensional structure, the third and fourth buffer portions (10c) and (10d) are substantially L-shaped in cross section. The upper and lower surfaces of the double structure comprising the first and second buffer portions (10a) and (10b) are formed in a bowl shape at both ends. For example, as shown in FIG. It can be used by being mounted so as to cover the two corners at one end of 4).

In each of the above embodiments, when the pulp mold cushioning material (1) is assembled into a three-dimensional structure, the small protrusion (15) as an engaging part to be housed in the protrusion (14) is also the protrusion (14). Similarly, although it is configured as a hollow cap, the small protrusion (15) does not necessarily have to be hollow and may be solid.
Note that, by fitting at least one small protrusion (15) and the protrusion (14), both of them can be maintained in a retaining state.

  Although not shown, the engaging part is not a small protrusion (15) but a hollow cap-shaped large protrusion that is slightly larger than the protruding part (14), and the protruding part (14) is fitted into the large protrusion. Then, it may be engaged in the retaining state.

What is necessary is just to set variously the number of the projection parts (14) protruded outward from each component when assembled to a three-dimensional structure according to the size and weight of the packaged item.
In the above embodiment, the bending direction of the plate-like body (10) is set to the direction in which the protrusions (14) and the small protrusions (15) protrude outward. However, the plate-like body (10) may be bent in the direction of protruding inward.

  In the above embodiment, the grooves (11a) and (12a) are provided along the first and second fold lines (11) and (12). Instead of the grooves (11a and 12a), It is also possible to make it easy to bend by forming perforations along the first and second fold lines (11) and (12) or by forming them thinly by pressing.

The disassembled perspective view which shows the packing structure which packs a to-be-packaged object using the pulp mold shock absorbing material of 1st embodiment of this invention. The perspective view before the assembly of the pulp mold shock absorbing material of 1st embodiment of this invention. The perspective view at the time of the assembly of the pulp mold shock absorbing material of 1st embodiment of this invention. The longitudinal cross-sectional view after the assembly of the pulp mold shock absorbing material of 1st embodiment of this invention. The perspective view before the assembly of the pulp mold shock absorbing material of the 2nd embodiment of this invention. Explanatory drawing which shows the use condition of the pulp mold shock absorbing material of 2nd embodiment of this invention. The perspective view before the assembly of the pulp mold shock absorbing material of the 3rd embodiment of this invention. Explanatory drawing which shows the use condition of the pulp mold shock absorbing material of 3rd Embodiment of this invention. Explanatory drawing which shows the assembly state of the conventional pulp mold shock absorbing material.

Explanation of symbols

(1) ・ ・ ・ ・ ・ ・ Pulp mold cushioning material
(10) ... Plate-shaped body
(10a) ・ ・ ・ ・ ・ First buffer part
(10b) 2nd buffer part
(11) ・ ・ ・ ・ ・ ・ First folding line
(12) ... 2nd fold line
(13) ... cut line
(14) ... ・ Protrusions
(15) ..... engaging part (small protrusion)

Claims (3)

A pulp mold cushioning material having a structure in which a plurality of hollow protrusions are protruded from a pulp mold plate-like body, wherein the pulp mold cushioning material can be three-dimensionally assembled by bending the plate-like body,
Forming a cut line that cuts a predetermined length from one side of the plate-like body and opens to the one side;
A first fold line is provided so as to be continuous on the same line as the score line, and a second fold line passing through the closed end of the score line and perpendicular to the first score line is formed,
The parts located on both sides of the score line are the first and second buffer parts, and the first and second buffer parts are configured to overlap in the three-dimensionally assembled state,
One of the first and second buffer portions is provided with an engaging portion that engages with the protrusion provided on the other when the two are overlapped with each other. Wood. In the pulp mold shock absorber according to claim 1, the protrusion is formed in a cap shape whose diameter is reduced toward the tip,
The engagement portion is a small protrusion having a size and shape that can be fitted into the protrusion.
A pulp mold cushioning material characterized in that a folding direction in which the plate-like body is folded along the first and second folding lines is set in a direction in which all of the protrusions and the small protrusions protrude outward.   The pulp mold cushioning material according to claim 1 or 2, wherein a groove is provided along the first and second folding lines.

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