JP2008013231A - Sheet material packaging structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet material packaging structure which can prevent a printing plate under transport or handling from slipping. <P>SOLUTION: A movement regulating member 60 is placed between a stacked bundle 12 and a fastening band 38, a flat face 60B of the movement regulating member 60 is brought into surface contact with a side face of the stacked bundle 12, so that a circular face 60A of the movement regulating member 60 is made to make contact with the fastening band 38 to receive a tensile strength of the band 38 while the flat face 60B is in surface contact with the side face of the stacked bundle 12. That is, since a pinching force to pinch a loading member 34 and a top plate 36 is converted to a stress acting in the orthogonal direction to the loading member 34 and the top plate 36 and a stress acting in the parallel direction to the loading member 34 and the top plate 36 (horizontal stress) through the circular face 60A, the horizontal stress can be converted to a pressing force to press the side face of the stacked bundle 12 via the flat face 60B and a movement of the stacked bundle 12 is regulated. By this, the printing plate under transport or handling can be prevented from slipping. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a sheet material packaging structure for packaging a sheet bundle in which a plurality of sheet materials are laminated.

  In recent plate making methods (including electrophotographic plate making methods), lithographic printing plates (PS plates) such as photosensitive printing plates and heat-sensitive printing plates are widely used in order to facilitate automation of the plate making process. A lithographic printing plate is generally obtained by performing surface treatment such as graining, anodizing, silicate treatment, and other chemical conversion treatments on a support such as a sheet-like or coil-like aluminum plate alone or in combination, and then a photosensitive layer. Alternatively, a heat-sensitive layer (hereinafter collectively referred to as a “coating film”, a surface on which the coating film is applied is referred to as an “image forming surface”, and a surface on which the coating film is not formed is referred to as a “non-image forming surface”). It is manufactured by cutting to a desired size after performing a drying process.

  This lithographic printing plate is subjected to plate making processing such as exposure, development processing, and gumming, and is set in a printing machine and coated with ink, whereby characters, images, etc. are printed on the paper.

  When handling this lithographic printing plate, a large number of lithographic printing plates are stacked in the thickness direction to form a bundle of lithographic printing plates in order to reduce the number of times of handling and transport and store at a low cost. A bundle may be loaded and packaged on a loading member such as a pallet.

For example, in Patent Document 1, a printing plate loaded on a loading table is sandwiched between pressing plates disposed on the upper surface, and the printing plate is held by a clamping force between the loading table and the pressing plate. In this structure, since the side of the printing plate is not held, the holding force against the force in the horizontal direction is weak during transportation or cargo handling, and the printing plate may be displaced.
JP 2003-11970 A

  In view of the above facts, an object of the present invention is to obtain a sheet material packaging structure capable of preventing a printing plate from being displaced during transportation or cargo handling.

  According to the first aspect of the present invention, in the sheet material packaging structure, a stacking member on which a sheet bundle formed by laminating a plurality of sheet materials in the thickness direction is stacked, and a ceiling disposed on the upper surface of the sheet bundle. A plate, a stacking member, a binding member wound around and bundled with the sheet bundle and the top plate, and a side surface of the sheet bundle, and a binding force by the binding member can be translated with respect to the stacking member. And a movement restricting member that converts it into a force that restricts the movement of the sheet bundle.

  In the invention according to claim 1, in the sheet material packaging structure, the binding member is wound around the stacking member, the sheet bundle, and the top plate in a state where the top plate is disposed on the upper surface of the sheet bundle stacked on the stacking member. To bind the stacking member, the sheet bundle and the top plate. Here, a movement restricting member is disposed on the side surface of the sheet bundle, and the bundling force by the bundling member is converted into a force that regulates the movement of the sheet bundle that can move in parallel with the stacking member.

  For example, in a packaging form in which a plurality of sheet materials are stacked, when the sheet material packaging structure is subjected to vibration or impact during transportation or cargo handling, the sheet material may be displaced in the horizontal direction. By arranging the movement restricting member on the side surface, the horizontal movement of the sheet material can be restricted. For this reason, a sheet material does not shift.

  According to a second aspect of the present invention, in the sheet material packaging structure according to the first aspect, the movement restricting member is disposed on at least two parallel sides of the sheet bundle.

  A third aspect of the present invention is the sheet material packaging structure according to the first or second aspect, wherein the movement restricting member has a flat surface shape and is in surface contact with the sheet bundle, and the flat surface And a circular arc surface against which the bundling member is pressed.

  In the invention according to claim 3, by holding the arc surface of the movement restricting member against the binding member, the clamping force (tension of the binding member) for clamping the stacking member and the top plate is applied to the stacking member and the top plate. It can be converted into a stress that can be decomposed into a stress that works in a direction orthogonal to a stress that works in a direction parallel to the loading member and the top plate.

  Then, the sum of the stresses acting in the direction parallel to the stacking member and the top plate can be set as a pressing force for pressing the side surface of the sheet bundle through the flat surface of the movement restricting member. The movement of the sheet bundle can be restricted.

  According to a fourth aspect of the present invention, in the sheet material packaging structure according to the first or second aspect, the movement restricting member has a wedge shape and is in a surface contact with the sheet bundle, and is orthogonal to the face. In addition, the invention is characterized in that it includes a flat surface on which the bundling member comes into contact, and a wedge surface that is inclined from the flat surface and rubs against a hole formed in the stacking member.

  In the invention according to claim 4, the binding force (tension of the binding member) for clamping the stacking member and the top plate in a direction parallel to the wedge surface by applying the binding member to the plane of the movement regulating member. It can be converted into working stress (sliding force by which the movement restricting member rubs the hole of the laminated member via the wedge surface) and stress acting in a direction parallel to the stacking member and the top plate.

  The stress acting in a direction parallel to the stacking member and the top plate can be set to a pressing force for pressing the side surface of the sheet bundle by facing the movement restricting member, and the invention according to claim 3. Substantially the same effect can be obtained.

  Since the present invention has the above-described configuration, it is possible to prevent the sheet material from being displaced during transportation or cargo handling.

  FIG. 3 shows a planographic printing plate packaging structure 32 (hereinafter referred to as “packaging structure 32”) as a sheet material packaging structure according to an embodiment of the present invention. 1 and 2 show a process for forming the packaging structure 32. In this packaging structure 32, a stacked bundle 12 on which a plurality of planographic printing plates 10 are stacked is stacked on a stacking member 34, a top plate 36 is placed on the stacked bundle 12, and these are fixed on a resin fixing band (bundling). Member) 38 are integrally bundled.

  The planographic printing plate 10 has a coating film (a photosensitive layer in the case of a photosensitive printing plate, a heat sensitive layer in the case of a heat sensitive printing plate, and further necessary on a thin aluminum support formed in a rectangular plate shape. According to the above, an overcoat layer, a mat layer, etc.) are applied. The coating film is subjected to plate making processing such as exposure, development processing, and gumming, and is set in a printing machine, and ink is applied to print characters, images, and the like on the paper surface.

  Note that the lithographic printing plate 10 of the present embodiment is a stage before processing (exposure, development, etc.) necessary for printing, and is sometimes referred to as a lithographic printing plate precursor or a lithographic printing plate material. Sometimes. Although the specific configuration of the lithographic printing plate 10 is not particularly limited, for example, a lithographic printing plate that can be directly made from digital data by using a lithographic printing plate for a laser printing plate of a heat mode method and a photon method may be used. it can.

  Furthermore, some lithographic printing plates are referred to as so-called “discarded plates” or “empty plates” which are set and used at positions where ink is not applied (that is, areas where printing is not performed) due to space limitations on the printing press used. Some are done. Such a discarded plate or an empty plate is also included in the planographic printing plate 10 according to this embodiment.

  Moreover, the shape of the lithographic printing plate 10 is not particularly limited. For example, one side of an aluminum plate having a thickness of 0.1 to 0.5 mm, a long side (width) of 300 to 2050 mm, and a short side (length) of 200 to 1500 mm or For example, a coating film (photosensitive layer or heat-sensitive layer) may be applied on both sides.

  As can be seen from FIG. 1, the slip sheet 14 that protects the coating film and the lithographic printing plate 10 are alternately stacked in the thickness direction, and both end faces in the overlapping direction, or every predetermined number of the lithographic printing plate 10. A laminated bundle 12 of the lithographic printing plate 10 is configured by placing the protective cardboard 22 on the inside with an interior material 50 having a predetermined light-shielding property and moisture-proof property.

  The number of planographic printing plates 10 constituting one laminated bundle 12 is not particularly limited, but may be, for example, 10 to 500 from the viewpoint of efficiency of transportation and storage. By making the number of planographic printing plates 10 or more, it is possible to increase the efficiency of cargo handling. Moreover, since the weight of laminated bundle 12 itself will be restrict | limited by setting it as 500 sheets or less, the work load in load handling is reduced.

  It is also possible to configure the laminated bundle 12 with more lithographic printing plates 10 so that it can be transported and stored more efficiently (with a small number of times of handling of cargo). For example, the maximum number of planographic printing plates 10 may be about 3000. Depending on the type of the lithographic printing plate 10, the laminated bundle 12 of the lithographic printing plate 10 may be configured by omitting one or both of the interleaf paper 14 and the protective cardboard 22.

  In addition, depending on the type of the lithographic printing plate, there are those provided with a coating film on both sides as well as on one side of the support (so-called “double-sided product”). When the laminated bundle 12 is constituted by such a two-sided planographic printing plate, the interleaf paper 14 is also placed below the lowermost planographic printing plate 10 (between the planographic printing plate 10 and the protective cardboard 22). One sheet is arranged (therefore, the slip sheet 14 is one more than the planographic printing plate 10). Thereby, the coating film of the lithographic printing plate 10 is not in direct contact with the protective cardboard 22, so that the coating film is prevented from being damaged by the direct contact between the coating film and the protective cardboard 22.

The interleaf paper 14 is not particularly limited in its specific configuration as long as the coating film (image forming surface) of the lithographic printing plate 10 can be protected. For example, 100% wood pulp or 100% wood pulp is used. Paper using synthetic pulp, paper with a low density polyethylene layer provided on the surface of these papers, and the like can be used. In particular, in the paper which does not use synthetic pulp, since the material cost becomes low, the interleaf paper 14 can be manufactured at low cost. More specifically, slipping paper made from bleached kraft pulp includes slip sheets having a basis weight of 30 to 60 g / m ² , a density of 0.7 to 0.85 g / cm ³ , a moisture content of 4 to 8%, and a pH of 4 to 6. Of course, it is not limited to this.

Moreover, as the cardboard 22 for protection, the basis weight 200-1500g / m < ² > made from waste paper, density 0.7-0.85g / cm < ³ >, moisture 4-8%, Beck smoothness 3-20 seconds, PH4- Six protective cardboards 22 can be used. For example, when the laminated bundle 12 is composed of 10 to 100 lithographic printing plates 10, the lithographic printing plate 10 and the protective cardboard 22 are fixed by a fixing means such as an adhesive tape so that they do not shift. May be.

  The process of laminating the lithographic printing plate 10 in the thickness direction to form the laminated bundle 12 is also not particularly limited. For example, the processing of the lithographic printing plate that cuts the web-shaped lithographic printing plate to a predetermined size while transporting it in the longitudinal direction Since the line is generally provided with a stacking device for sequentially stacking the lithographic printing plates 10, the stacked bundle 12 may be configured by stacking with the stacking device.

  Further, in this processing line, a web-shaped slip sheet is also placed in contact with the web-shaped planographic printing plate before cutting, and then the web-shaped planographic printing plate and the slip sheet are integrally cut to a predetermined size. In many cases, the laminated bundle 12 is formed in such a state that the planographic printing plates 10 and the interleaf sheets 14 are alternately laminated at the time of accumulation in the accumulation device. Of course, after the lithographic printing plate 10 and the interleaf paper 14 are alternately laminated, the laminated bundle 12 may be constituted by cutting off the end of the lithographic printing plate 10 with a cutter or the like.

  The lithographic printing plate 10, the interleaf paper 14, and the protective cardboard 22 thus configured are internally provided by the interior material 50. The interior material 50 is made of paper having light-shielding properties and moisture-proof properties. The interior material 50 is used to interior the lithographic printing plate 10 so as to be completely shielded from the outside. Can be reliably shielded from light and moisture.

  The material of the interior material 50 is not particularly limited as long as the laminated bundle 12 can be completely cut off from the outside and packaged. For example, a single rectangular unexposed material having a predetermined size can be used. Can be composed of kraft paper.

  Moreover, you may use the thing comprised by sticking the metal thin film of predetermined thickness on this kraft paper, and also bonding the resin layer of predetermined thickness on this metal thin film depending on the case. Furthermore, a low-density polyethylene layer with a thickness of 10 to 70 μm is pasted on this metal thin film, or a black polyethylene film with a thickness of about 70 μm is pasted on this low-density polyethylene layer to improve the light-shielding and moisture-proof properties. May be.

  In general, a photosensitive printing plate has high photosensitivity, and even when exposed to light in a slight visible light wavelength band, a change occurs in the photosensitive layer, so that it is necessary to shield it from light. Further, the heat-sensitive printing plate is also preferably subjected to appropriate light shielding because the heat-sensitive layer may be altered by the thermal energy of the light hit or the sensitivity may change due to the progress of the reaction.

  Furthermore, if a sudden humidity change or temperature change is applied, any printing plate may have a disadvantage such as dew formation on the photosensitive layer or the heat-sensitive layer, or deterioration of the printing plate or adhesion to the interleaf 14. It becomes necessary to prevent moisture. Since the interior material 50 is configured as described above and has a certain light-shielding property and moisture-proof property, alteration of the photosensitive layer or the heat-sensitive layer of the planographic printing plate 10 is prevented, and the planographic printing plate 10 is maintained at a constant quality. Is done. Of course, the low-density polyethylene layer and the black polyethylene film do not necessarily have to be attached as long as the interior material 50 can exhibit the above-described certain light-shielding properties and moisture-proof properties.

  The shape of the interior material 50 and the interior structure (how to fold the interior paper) are not particularly limited as long as the laminated bundle 12 can be moisture-proof and light-shielded.

  And as shown in FIG. 2, the interior material 50 is affixed in a predetermined position by fixing means, such as the adhesive tape 52. FIG. Thereby, it fixes so that the interior material 50 may not spread carelessly, or it may fall off, and the lamination | stacking bundle | flux 12 is comprised. The fixing means is not limited as long as the interior material can be reliably fixed as described above. For example, instead of the adhesive tape 52 (or in combination), an adhesive such as hot melt or general glue may be used. Good.

  On the other hand, as shown in FIGS. 1 to 3, the stacking member 34 is made of iron, wood, plywood, or resin, and has a plate-like mount 40. The stacked bundle 12 is loaded on the gantry 40. Here, the stacking member 34 is stacked on the gantry 40 so that the planographic printing plate 10 is parallel to the gantry 40 (so-called flat stacking).

  A leg portion 42 protrudes downward from the gantry 40, and a space formed between the gantry 40 and the installation surface is an insertion portion 48. Fork lifts or hand lifts, for example, are inserted into the insertion portion 48, and the stacking member 34 (that is, the packaging structure 32) is lifted and moved.

  The number, position, and material of the leg portions 42 are not particularly limited as long as the gantry 40 can be reliably supported. However, in the present embodiment, four leg portions 42 are provided in total, one from the vicinity of the corners of the gantry 40. Is provided. Further, a larger number of leg portions 42 may be provided (for example, at the center of each side of the gantry 40) to prevent the gantry 40 from being bent more reliably. Further, the shape and material of the gantry 40 are not particularly limited as long as the gantry 40 has such a strength that the laminated bundle 12 is not bent or buckled carelessly.

  A top plate 36 is placed on the upper surface of the stacked bundle 12 loaded on the loading member 34. The top plate 36 is formed in a plate shape that is substantially the same as or slightly larger than the upper surface of the stacked bundle 12, that is, the planographic printing plate 10. Even when an external force is applied from above the laminated bundle 12, the top plate 36 absorbs the energy, and the deformation of the lithographic printing plate 10 is suppressed to a level that does not cause a problem in practice.

  As shown in FIG. 3, a resin fixing band 38 is wound around the stacking member 34, the laminated bundle 12 and the top plate 36 in order to bind them together. As a result, the stacking member 34, the stacked bundle 12 and the top plate 36 can be handled as a unit, so that they are not inadvertently displaced or collapsed.

  The number and position of the fixing bands 38 are appropriately determined according to the shape and size of the laminated bundle 12. In the present embodiment, since it is assumed that the upper surface of the laminated bundle 12 (that is, the shape of the lithographic printing plate 10) is rectangular, a total of three fixing bands 38 are connected to both ends of the laminated bundle 12 in the longitudinal direction. It arrange | positions at the side and the center part, and is mutually parallel.

  In addition, since the top plate 36 has a rectangular shape in accordance with the shape of the laminated bundle 12, the reinforcing plate 44 is provided on the top surface of the top plate 36 at both ends and the center in the longitudinal direction of the top plate 36. It extends along the width direction of 36, and is fixed to the top plate 36 by fixing means such as an adhesive or wood screws.

  Then, the fixing band 38 is wound around each reinforcing plate 44. Here, the width of the reinforcing plate 44 is formed so as to be wider than the width of the fixing band 38, and the binding force of the fixing band 38 is distributed throughout the top plate 36 via the reinforcing plate 44. Is done. Thereby, the bending of the top plate 36 due to the binding force of the fixing band 38 can be prevented.

  Here, it is also possible to perform binding by the fixing band 38 by using a generally used binding device (for example, an automatic banding machine or the like), thereby further reducing the packaging work with less time and effort. It can also be done. Further, when unpacking the packaging structure 32, depending on the type of the fixing band 38, the fixing band 38 can be unpacked by cutting with a cutter knife or the like, so that workability is improved.

  On the other hand, on the long side of the laminated bundle 12, between the laminated bundle 12 and each of the fixing bands 38, an octopus-shaped movement restricting member 60 having substantially the same length as the reinforcing plate 44 is disposed. . The flat surface 60B facing the arcuate surface 60A of the movement restricting member 60 has substantially the same length as the side surface of the laminated bundle 12, and can be brought into surface contact with the side surface of the laminated bundle 12. The arc surface 60A receives the tension of the fixing band 38 in a state where the flat surface 60B is in surface contact with the side surface of the laminated bundle 12.

  Next, the effect | action of the packaging structure 32 of this embodiment is demonstrated.

  As described above, in the packaging structure 32 of the present embodiment, the stacked bundle 12 composed of a plurality of lithographic printing plates 10 is stacked on the stacking member 34, so even a large amount of lithographic printing plates 10 can be batched. Can be handled. Since the stacking member 34, the stacked bundle 12 and the top plate 36 are integrally bound by the fixing band 38, they are not inadvertently displaced or collapsed. In addition, since the gantry 40 and the top plate 36 are disposed on both end surfaces of the stack 12 in the stacking direction, the planographic printing plate 10 is prevented from being deformed, damaged, or altered.

  Further, as shown in FIG. 4A, a kamaboko-shaped movement restricting member 60 is disposed between the laminated bundle 12 and the fixing band 38, and the flat surface 60B of the movement restricting member 60 faces the side surface of the laminated bundle 12. The arc surface 60A of the movement restricting member 60 receives the tension of the fixing band 38 in a state where the flat surface 60B is in surface contact with the side surface of the laminated bundle 12 so as to come into contact.

That is, the clamping force (the tension of the fixing band 38 (in the direction of arrow A)) that clamps the stacking member 34 and the top plate 36 is converted into the stress acting in the direction of arrow B through the circular arc surface 60A of the movement regulating member 60. Is done. That is, the該挟lifting force, stress acting in a direction orthogonal to the carrying member 34 and the top plate 36 (the arrow B ₁ direction), stresses acting in a direction parallel to the carrying member 34 and the top plate 36 (arrow B _{In two} directions).

Then, the sum of the stress acting on the arrow B ₂ direction via the flat surface 60B of the movement restricting member 60, the side surface of the sheet stack 12 can be a pressing force for pressing (arrow C), and the pressing force Therefore, the movement of the laminated bundle 12 can be regulated. As a result, it is possible to prevent the printing plate from being displaced during transportation or handling.

  Here, in this example, evaluation was performed by stacking 500 sheets of a 0.3 × 1100 × 400 mm aluminum plate coated with a photosensitive layer on the stacking member 34, but using a resin band as the fixing band 38. Although used, there is no problem with cloth-type fastening belts. A fastening force of 60 kg is sufficient, but preferably 80 kg, more preferably 100 kg, the reliability is further improved. As a result of making this packaging form and distributing it under normal transportation conditions, good results could be obtained with no plate displacement of the lithographic printing plate 10.

  The shape of the top plate, the number, position and shape of the reinforcing members, and the number and position of the binding bands are not limited to those described above. That is, an appropriate number is determined depending on the size of the laminated bundle 12 (that is, the size and the number of laminated lithographic printing plates 10), the required binding force, and the strength of the reinforcing member required corresponding to the binding force. , Shape and position.

  Further, here, the movement restricting member 60 is shaped like a paddle, but it is sufficient that the binding force by the fixing band 38 can be converted into a force that restricts the movement of the stacked bundle 12 along the direction parallel to the stacking member 34. Therefore, it is not limited to this.

  For example, as shown in FIGS. 4B and 5, a wedge-shaped movement restricting member 62 may be used. The movement restricting member 62 includes two sides 62A and 62B (hereinafter, referred to as “face 62A” and “plane 62B”, respectively) orthogonal to each other, and a wedge surface 62C formed to be inclined from the plane 62B. ing.

  Then, the mount 40 of the stacking member 34 passes through a hole 40A that can engage with the top 62D (the end opposite to the plane 62B) of the movement restricting member 62 so that the inside of the hole 40A can be rubbed. . Thus, the clamping force (in the direction of arrow A) for clamping the stacking member 34 and the top plate 36 is applied in a direction parallel to the wedge surface 62C by applying the fixing band 38 to the flat surface 62B of the movement regulating member 60. Working stress (direction of arrow D), that is, a rubbing force by which the movement restricting member 62 rubs the hole 40A of the laminated member 34 via the wedge surface 62C, and a direction parallel to the stacking member 34 and the top plate 36 It can be decomposed into stress (in the direction of arrow C) acting on.

  The movement of the laminated bundle 12 can be regulated by the stress acting in the direction of arrow C. Thus, by using the wedge-shaped movement restricting member 62, substantially the same effect as that obtained when the kamaboko-shaped movement restricting member 60 is used can be obtained.

  In the above description, the case where the planographic printing plates 10 are so-called flat stacked has been described as an example. However, the stacking direction is not limited to this. For example, as shown in FIGS. 6 and 7, a configuration (so-called vertical stacking) in which the stack 12 is leaned diagonally so that the planographic printing plate 10 has a vertical direction may be employed.

  The stacking member 64 includes a mounting table 66 that has a substantially rectangular parallelepiped shape, and a mounting unit 68 that is provided on the upper surface of the mounting table 66 and has a triangular shape in a side view. A back plate 70 orthogonal to the top surface (inclined surface 68A) of the mounting portion 68 extends from the mounting portion 68, and the stack 12 is transferred to the mounting table 66 by the mounting table 66 and the back plate 70. It will be mounted in the state which inclined with respect to.

  Then, a fixing band 38 is wound between the laminated bundle 12 and the top plate 36 arranged on the upper surface of the back plate 70 and the stacking bundle 12, and the laminated bundle 12, the back plate 70, and the top plate 36 are integrated. Therefore, the movement restricting member 60 or the movement restricting member 62 is disposed between the side surface of the laminated bundle 12 and the fixing band 38.

It is a perspective view which shows the process of comprising the lithographic printing plate packaging structure which concerns on embodiment of this invention. It is a perspective view which shows the process of comprising the lithographic printing plate packaging structure which concerns on embodiment of this invention. 1 is a perspective view showing a planographic printing plate packaging structure according to an embodiment of the present invention. (A) is explanatory drawing explaining the effect | action of the lithographic printing plate packaging structure of FIG. 4, (B) is explanatory drawing explaining the effect | action of the lithographic printing plate packaging structure of FIG. It is a perspective view which shows the 1st modification of the lithographic printing plate packaging structure which concerns on embodiment of this invention. It is a perspective view which shows the 2nd modification of the lithographic printing plate packaging structure which concerns on embodiment of this invention. It is a perspective view which shows the 3rd modification of the lithographic printing plate packaging structure which concerns on embodiment of this invention.

Explanation of symbols

10 Planographic printing plate (sheet material)
12 Stacked bundle (sheet bundle)
32 Packaging structure (sheet material packaging structure)
34 Loading member 36 Top plate 38 Fixing band (binding member)
60 Movement restriction member 60A Circular arc surface (movement restriction member)
60B flat surface (movement restriction member)
62 Movement restriction member 62A Face (movement restriction member)
62B Plane (movement restriction member)
62C wedge surface (movement restriction member)
64 Loading members

Claims (4)

A stacking member on which a sheet bundle composed of a plurality of sheet materials stacked in the thickness direction is stacked;
A top plate disposed on the upper surface of the sheet bundle;
A binding member wound around the stacking member, the sheet bundle, and the top plate;
A movement restricting member that is arranged on a side surface of the sheet bundle and converts a bundling force by the bundling member into a force that regulates movement of the sheet bundle that can move in parallel with the stacking member;
A sheet material packaging structure characterized by comprising:   The sheet material packaging structure according to claim 1, wherein the movement restricting member is disposed on at least two parallel side surfaces of the sheet bundle. The movement restricting member has a kamaboko shape,
A flat surface in surface contact with the sheet bundle;
An arc surface facing the flat surface and against which the binding member is pressed;
The sheet material packaging structure according to claim 1 or 2, characterized in that the sheet material packaging structure is included. The movement restricting member has a wedge shape,
A face in surface contact with the sheet bundle;
A plane perpendicular to the face and against which the binding member strikes;
A wedge surface which is formed inclined from the plane and rubs against a hole formed in the stacking member;
The sheet material packaging structure according to claim 1 or 2, characterized in that the sheet material packaging structure is included.

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