JP2003011970A - Packaging structure for planographic printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stacking structure for a planographic printing plate in which a workability in either a packaging work or a package opening work can be improved, and a deformation of an end plate and be prevented without increasing its weight. SOLUTION: A bundle 12 of laminated planographic printing plates 10 is stacked up on a stacking member 34. A top plate 36 is mounted on the bundle 12 of laminated plates. They are integrally bundled by a resin fixing band 38 to constitute a packaging structure 32 for the planographic printing plates, resulting in that a fastening with the prior are bolts is not required and both a packaging work and a package opening work can be easily carried out. Reinforcing plates 44, 46 are fixed to the top plate 36 in correspondence with the fixing band 38, so as to prevent either curving or notch formation from being attained with a binding force of the fixing band 38 against the top plate 36. Since it is not necessary for the top plate 36 itself to be made thick, its increasing in weight is not produced.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lithographic printing plate packaging structure.

[0002]

2. Description of the Related Art Platemaking methods in recent years (including electrophotographic platemaking methods)
In order to facilitate automation of the plate-making process, planographic printing plates (PS plates) such as photosensitive printing plates and heat-sensitive printing plates are widely used. A lithographic printing plate is generally formed on a support such as a sheet-shaped or coil-shaped aluminum plate by, for example, graining,
Anodizing, silicate treatment, other surface treatment such as chemical conversion treatment is performed alone or in appropriate combination, and then a photosensitive layer or a heat-sensitive layer (hereinafter, these are collectively referred to as "coating film",
The surface coated with the coating film is called the "image forming surface" and the surface not coated with the coating film is called the "non-image forming surface". It is manufactured by cutting it to the desired size after applying and drying it. To be done.

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

When the planographic printing plate is handled as cargo, in order to reduce the number of times of cargo handling and to carry and store it at a low cost,
A large number of lithographic printing plates may be stacked in the thickness direction to form a bundle of lithographic printing plates, and the bundle may be stacked and packaged on a stacking member such as a pallet.

FIG. 7 shows an example of such a packaging structure (see Japanese Patent Laid-Open No. 3-73946).

In this packaging structure 110, the planographic printing plate 11
End plates 114 are arranged on both end faces of the two stacked bundles, and the end plates 114 are fastened with bolts 116.

However, the work of fastening the end plate 114 with the bolts 116 is generally complicated, and since there is no device for automatically performing the fastening work, much time and labor are required for packaging. Moreover, the bolts 116 had to be removed each time when unpacking, and the workability of unpacking was low.

Further, the fastening force from the bolt 116 is the end plate 1
Since it acts locally on 14, it is necessary to secure the thickness of the end plate 114 in order to prevent the end plate 114 from being dented or curved, which may cause an increase in weight.

The above-mentioned Japanese Patent Laid-Open No. 3-73946 also proposes a packaging structure 210 shown in FIG.

In this packaging structure 210 as well, a bundle 218 of the required lithographic printing plates 216 is put on an end plate 214 which is erected upright with respect to a bottom plate 212, and then another end plate 22 is provided.
0 is applied to the front surface side of the bundle 218, and then the end plates 214 and 220 are fastened with bolts 222 to form a bundle 218.
Is designed to be fixed.

Since the end plates are fastened to each other with the bolts 222 in this manner, the workability of packaging and unpacking is low as in the packaging structure 110 shown in FIG. Moreover, if the thickness is secured to prevent the end plate from being depressed or deformed, the weight may increase.

[0012]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention improves the workability in packaging work and unpacking work and can prevent the deformation of the end plate without increasing the weight. An object is to obtain a packaging structure.

[0013]

According to a first aspect of the present invention, there is provided a planographic printing plate stacking member capable of stacking a stack of a plurality of planographic printing plates stacked in the thickness direction, and the planographic printing plate. An end plate that is arranged in contact with the stack on the opposite side of the stacking member, a binding member that wraps the planographic printing plate stacking member, the stack and the end plate to bundle them, and the end plate and the stack. A reinforcing member which is attached to the end plate so as to be located between the member and a member which relieves the pressure applied from the binding member and acts on the end plate.

The laminated stack of lithographic printing plates has an end plate arranged on the opposite side in a state of being stacked on the lithographic printing plate stacking member,
Further, the planographic printing plate stacking member, the stack and the end plate are bound by a binding member to form a planographic printing plate packaging structure. This makes it possible to handle a plurality of lithographic printing plates as a package.

Further, since the lithographic printing plate stacking member, the stack and the end plate are bound by the binding member, the workability of the packaging is improved as compared with the conventional fastening with bolts. It is also possible to bind using a general binding device. Furthermore, the unpacking operation is facilitated by removing the binding member by cutting or the like.

A reinforcing member is attached to the end plate so as to be located between the end plate and the binding member, and the pressure exerted by the binding member is relieved to act on the end plate. Therefore, it is possible to prevent the end plate from being depressed or curved due to the binding force from the binding member. Since it is not necessary to secure the thickness of the end plate, it is possible to reduce the thickness and reduce the weight.

The invention according to claim 2 is characterized in that, in the invention according to claim 1, the reinforcing member has higher rigidity than the end plate.

Therefore, the deformation of the end plate can be prevented more effectively.

The specific structure for making the reinforcing member more rigid than the end plate is not limited. For example, the reinforcing member may be made of a material having a hardness higher than that of the end plate. Even when the end plate is made of the same material, the portion where the reinforcing member is provided has a greater thickness than the end plate alone, resulting in higher rigidity.

According to a third aspect of the invention, in the invention according to the first or second aspect, the reinforcing member has a shape which is continuous from one end side to the other end side of the end plate along the binding member. It is characterized as being.

As a result, the rigidity when considering the end plate and the reinforcing member as a whole is further increased. Therefore, the bending of the end plate can be prevented more reliably.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 3 shows a planographic printing plate packaging structure 32 according to a first embodiment of the present invention. Further, FIGS. 1 and 2 show the steps of forming the planographic printing plate packaging structure 32. Planographic printing plate packaging structure 32
Stacks the laminated bundle 12 of the lithographic printing plates 10 on the planographic printing plate stacking member (hereinafter, simply referred to as “stacking member”) 34, and further mounts the top plate 36 on the stacked bundle 12 to fix them with resin. The band 38 is integrally bound.

The planographic printing plate 10 comprises a thin aluminum support formed in the shape of a rectangular plate and a coating film (a photosensitive layer in the case of a photosensitive printing plate, a heat sensitive layer in the case of a thermosensitive printing plate). Further, if necessary, an overcoat layer, a mat layer, etc.) is applied to form the layer. Exposure to this coating film,
A plate-making process such as a development process and gumming is carried out, the plate is set in a printing machine, and ink is applied, so that characters, images, etc. are printed on the paper surface. The planographic printing plate 10 of the present embodiment
Is at a stage prior to the processing (exposure, development, etc.) necessary for printing, and is sometimes referred to as a lithographic printing plate precursor or a lithographic printing plate material.

The specific configuration of the lithographic printing plate 10 is not particularly limited as long as it has such a configuration. For example, a lithographic printing plate for a heat mode type and photon type laser printing plate is used. A lithographic printing plate can be directly made from digital data.

Further, the lithographic printing plate 10 can be made into a lithographic printing plate corresponding to various plate making methods by selecting various components in the photosensitive layer or the heat sensitive layer. Examples of specific aspects of the lithographic printing plate 10 according to the present invention include the following aspects (1) to (11). (1) A mode in which the photosensitive layer contains an infrared absorber, a compound that generates an acid by heat, and a compound that crosslinks by an acid. (2) A mode in which the photosensitive layer contains an infrared absorber and a compound that becomes alkali-soluble by heat. (3) A mode in which the photosensitive layer includes two layers, a layer containing a compound that generates radicals by laser irradiation, an alkali-soluble binder, and a polyfunctional monomer or prepolymer, and an oxygen barrier layer. (4) A mode in which the photosensitive layer comprises two layers of a physical development nucleus layer and a silver halide emulsion layer. (5) A mode in which the photosensitive layer includes three layers of a polymerized layer containing a polyfunctional monomer and a polyfunctional binder, a layer containing silver halide and a reducing agent, and an oxygen barrier layer. (6) A mode in which the photosensitive layer includes two layers, a layer containing a novolac resin and naphthoquinonediazide, and a layer containing silver halide. (7) A mode in which the photosensitive layer contains an organic photoconductor. (8) A mode in which the photosensitive layer includes two or three layers including a laser light absorption layer that is removed by laser light irradiation and a lipophilic layer and / or a hydrophilic layer. (9) A compound in which the photosensitive layer absorbs energy to generate an acid, a polymer compound having a functional group in the side chain to generate a sulfonic acid or a carboxylic acid by the acid, and an acid generator by absorbing visible light Embodiments containing a compound that gives energy to (10) A mode in which the photosensitive layer contains a quinonediazide compound and a novolac resin. (11) A mode in which the photosensitive layer contains a compound that decomposes by light or ultraviolet rays to form a cross-linked structure with itself or other molecules in the layer, and an alkali-soluble binder.

In particular, in recent years, a lithographic printing plate coated with a high-sensitivity photosensitive type coating film exposed by a laser or a heat-sensitive lithographic printing plate may be used (for example, (1) to () described above). In the case of the high-sensitivity type lithographic printing plate as described in 3)), it is preferable to package the lithographic printing plate packaging structure of the present invention.

The wavelength of the laser light here is not particularly limited, and for example, a laser having a wavelength range of 350 to 450 nm (specifically, a laser diode having a wavelength of 405 ± 5 nm). Laser in the wavelength range of 480 to 540 nm (specific examples include an argon laser having a wavelength of 488 nm and a wavelength of 532 nm).
nm (FD) YAG laser, wavelength 532 nm solid-state laser, wavelength 532 nm (green) He-Ne laser). A laser with a wavelength range of 630 to 680 nm (specifically, a He-Ne laser with a wavelength of 630 to 670 nm,
Red semiconductor laser having a wavelength of 630 to 670 nm). A laser having a wavelength range of 800 to 830 nm (specifically, an infrared (semiconductor) laser having a wavelength of 830 nm). A laser having a wavelength of 1064 to 1080 nm (specifically, a YAG laser having a wavelength of 1064 nm).

And the like. Of these,
For example, any of the laser beams in the wavelength ranges of and can be applied to both the lithographic printing plate having the photosensitive layer or the heat-sensitive layer of the above aspect (3) or (4). Further, any of the laser beams in the wavelength ranges of and can be applied to both the lithographic printing plate having the photosensitive layer or the heat-sensitive layer of the above aspect (1) or (2). Of course, the relationship between the wavelength range of laser light and the photosensitive layer or the heat sensitive layer is not limited to these.

Further, the lithographic printing plate 10 of this embodiment (the lithographic printing plates of all the above-mentioned aspects (1) to (11)) is
The lithographic printing plate may be set in an automatic plate making machine having an automatic plate feeding function, a so-called platesetter, or the like in a state where the laminated bundle 12 is configured and supplied (plate feeding) to the plate making process. However, in an actual use situation, regardless of how the user of the lithographic printing plate feeds the lithographic printing plate 10 by an automatic plate feeding mechanism, manually feeding the plate, etc. (in other words, (As a problem before the plate feeding method), the planographic printing plate packaging structure 3 is loaded on the loading member 34 of the present invention.
Make up 2. Of course, even lithographic printing plates of modes other than (1) to (11) are set in an automatic plate making machine having an automatic plate making function, a so-called platesetter, etc., and supplied (plate feeding) to the plate making process. All lithographic printing plates that may possibly be included in the lithographic printing plate 10 according to the present embodiment.

Further, among the lithographic printing plates, a so-called "discard plate" or "blank plate" is used which is set at a position where ink is not applied (that is, a region which is not printed) depending on the space of a printing machine depending on the printing machine used. There is also what is called. Thus, a waste plate or a blank plate is also included in the planographic printing plate 10 according to this embodiment.

The shape and the like of the planographic printing plate 10 are not particularly limited, and for example, the thickness is 0.1 to 0.5 mm and the long side (width) 30.
0 to 2050 mm, short side (length) 200 to 1500 mm
The aluminum plate may be coated with a coating film (photosensitive layer or heat-sensitive layer) on one side or both sides.

As can be seen from FIG. 2, the interleaving paper 14 for protecting the coating film and the planographic printing plate 10 are alternately superposed in the thickness direction, and further, both end faces in the superposing direction,
Alternatively, for each predetermined number of planographic printing plates 10, protective cardboard 2
A stack of the lithographic printing plates 10 is configured by arranging the two arranged inside with an interior paper 50 having a predetermined light-shielding property and moisture-proof property. The number of lithographic printing plates 10 constituting one stack 12 is not particularly limited, but from the viewpoint of efficiency of transportation and storage, it can be set to 10 to 200, for example. By setting the number of planographic printing plates 10 to 10 or more, it is possible to improve the efficiency of handling the load. Further, by setting the number of sheets to 200 or less, the weight of the stacked bundle 12 itself is limited, so that the work load in handling the load is reduced. Further, it is also possible to configure the stack 12 with a larger number of planographic printing plates 10 so that the stack 12 can be transported and stored more efficiently (with a smaller number of times of load handling). For example, the maximum number of planographic printing plates 10 may be about 3000. Depending on the type of the planographic printing plate 10, one or both of the slip sheet 14 and the protective cardboard 22 may be omitted,
You may comprise the laminated bundle 12 of the lithographic printing plate 10.

Depending on the type of the lithographic printing plate, there is one in which a coating film is provided on both sides of the support (so-called "double-sided product"). In the case where the laminated bundle 12 is composed of such a lithographic printing plate of both sides,
In the lowermost lithographic printing plate 10, one interleaving paper 14 is arranged (between the lithographic printing plate 10 and the protective cardboard 22) (there is one interleaving paper 14 than the lithographic printing plate 10). More). As a result, the coating film of the planographic printing plate 10 does not come into 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 slip sheet 14 is not particularly limited in specific constitution as long as it can protect the coating film (image forming surface) of the lithographic printing plate 10, but for example, paper using 100% wood pulp or 100 wood pulp. % Paper that does not use synthetic pulp and paper that has a low-density polyethylene layer on the surface of these papers can be used. In particular, paper that does not use synthetic pulp has a low material cost, and thus the interleaf paper 14 can be manufactured at low cost. More specifically, the basis weight of the bleached kraft pulp is 30 to 60 g / m ² ,
Density 0.7 to 0.85 g / cm ³ , moisture 4 to 8%, PH
4 to 6 interleaving papers may be mentioned, but of course the present invention is not limited thereto.

As the protective cardboard 22, a basis weight of 200 to 1500 g / m ² made from waste paper and a density of 0.7 to
0.85 g / cm ³ , moisture 4-8%, Bekk smoothness ^3-
A protective cardboard 22 with a PH of 4-6 for 20 seconds can be used. Note that, for example, 10 to 100 lithographic printing plates 1
When the laminated bundle 12 is constituted by 0, the planographic printing plate 10 and the protective cardboard 22 may be fixed by a fixing means such as an adhesive tape so as not to shift.

The step of stacking the lithographic printing plates 10 in the thickness direction to form the stack 12 is not particularly limited, but for example,
In a lithographic printing plate processing line in which a web-shaped lithographic printing plate is conveyed in the longitudinal direction and cut into a predetermined size, a stacking device for sequentially stacking the lithographic printing plates 10 is generally provided. The stacked bundle 12 may be formed by stacking the stacked bundles with a device. Further, in this processing line, a web-shaped planographic printing plate before cutting is also placed in contact with a web-shaped interleaving paper, and then the web-shaped planographic printing plate and the interleaving paper are integrally cut to have a predetermined size. In this case, in the case of stacking in the stacking device, the lithographic printing plate 10 and the interleaving paper 14 are stacked alternately so that the stack 12 is stacked.
Is configured. Of course, the laminated bundle 12 may be formed by alternately stacking the planographic printing plates 10 and the interleaving paper 14 and then trimming the edges of the planographic printing plates 10 with a cutter or the like.

A lithographic printing plate 1 constructed in this way
0, the interleaving paper 14, and the protective cardboard 22 are mounted by the interior material 50. The interior material 50 is made of paper having a light-shielding property and a moisture-proof property. By using this interior material 50, the lithographic printing plate 10 is internally installed 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 shielded from the outside and packaged. For example, one rectangular shape having a predetermined size is used. It can be composed of unbleached kraft paper. Alternatively, a metal thin film having a predetermined thickness may be attached to the kraft paper, and in some cases, a resin layer having a predetermined thickness may be further attached to the metal thin film. Furthermore, 10-70 is added to this metal thin film.
A low-density polyethylene layer having a thickness of μm may be attached, or a black polyethylene film having a thickness of about 70 μm may be attached to the low-density polyethylene layer to use a material having improved light-shielding and moisture-proof properties. Generally, the photosensitive printing plate has high photosensitivity,
It is necessary to block light because the photosensitive layer changes even when exposed to light in a slight visible wavelength band. Further, also in the heat-sensitive printing plate, the heat-sensitive layer may be deteriorated by the heat energy of the applied light, or the sensitivity may be changed due to the progress of the reaction. Therefore, it is preferable to appropriately shield the light.
Further, when subjected to a rapid humidity change or temperature change, any printing plate has a disadvantage that dew condensation occurs in the photosensitive layer or the heat sensitive layer and the quality is changed, or it is adhered to the slip sheet 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 lithographic printing plate 10 is prevented, and the lithographic printing plate 10 is maintained at a certain quality. To be done. Of course, the low-density polyethylene layer, the black polyethylene film, and the like are not necessarily adhered as long as the interior material 50 can exhibit the above-described constant light-shielding property and moisture-proof property.

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 protected against moisture and light.

Then, as shown in FIG. 2, the adhesive tape 5
The interior material 50 is attached at a predetermined position by a fixing means such as 2. As a result, the interior material 50 is fixed so as not to unintentionally spread or fall off, and the laminated bundle 12 is configured. The fixing means is not limited as long as the interior material can be reliably fixed in this way, and for example, an adhesive such as hot melt or general glue may be used instead of (or in combination with) the adhesive tape 52. Good.

As shown in FIGS. 1 to 3, the stacking member 34
Has a plate-shaped mount 40. On this stand 40,
The stack 12 is loaded. Here, the lithographic printing plate 10 is stacked on the gantry 40 so as to be parallel to the gantry 40 (so-called flat stacking).

A leg portion 42 projects downward from the gantry 40, and a space formed between the gantry 40 and the installation surface serves as an insertion portion 48. A fork such as a forklift or a handlift can be inserted into the insertion portion 48 to lift the loading member 34 (that is, the packaging structure 32). Note that the number, position, and material of the legs 42 are not particularly limited as long as the pedestal 40 can be reliably supported, but in the present embodiment, one from the vicinity of the corners of the pedestal 40, a total of four legs 42. It is provided. More legs 4
2 is provided (for example, at the center of each side of the gantry 40), and the gantry 4
The curve of 0 may be more surely prevented. Further, the pedestal 40 is not particularly limited in shape and material as long as the pedestal 40 has such a strength as not to be inadvertently bent or buckled when the stacked bundle 12 is loaded.

A top plate 36 is placed on the upper surface of the stacked bundle 12 stacked on the stacking member 34. The top plate 36 is formed on the upper surface of the stacked bundle 12, that is, a plate shape that is substantially the same as or slightly larger than the planographic printing plate 10. This top plate 36 absorbs the energy even when an external force is applied from above the stacked bundle 12, and the deformation of the planographic printing plate 10 is suppressed to such an extent that it does not pose a practical problem.

The size of the top plate 36 is the planographic printing plate 1
With the same size as 0, the top plate 36 to the planographic printing plate 10
The top plate 3 so that (the upper surface of the stack 12) does not protrude
By placing 6 on the planographic printing plate 10, the planographic printing plate 10 can be surely protected, which is preferable. However, if the top plate 36 is made too large, the top plate 36 will protrude from the stacking member 34 in a plan view, and the handling property will deteriorate. Therefore, from the viewpoint of facilitating the handling of the load, the loading member 3 when viewed in a plan view.
It is preferable to set the upper limit to a size that does not extend beyond 4 (that is, the same size as the stacking member 34).

Then, a resin fixing band 38 is wound around the stacking member 34, the stack 12 and the top plate 36 so as to integrally bind them, and the planographic printing plate of the present embodiment is wrapped around. The packaging structure 32 is configured. Therefore, the stacking member 34, the stacked bundle 12, and the top plate 36 can be handled as a single piece, and they are prevented from accidentally slipping or collapsing.

The number and positions 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 stack 12 (that is, the shape of the planographic printing plate 10) has a shape close to a square,
A total of four fixing bands 38 are used and arranged so as to have a substantially "well" shape in a plan view.

On the top surface of the top plate 36, the short side 36 of the top plate 36 is placed.
Two reinforcing plates 44 are arranged parallel to S, and two reinforcing plates 46 are also arranged parallel to the long side 36L.
It is fixed to 6 by a fixing means such as an adhesive or a wood screw. The two reinforcing plates 44 parallel to the short side 36S have the same length as the short side 36S, and have a length that continuously extends from one of the long sides 36L to the other. On the other hand, the two reinforcing plates 46 parallel to the long sides 36L are formed shorter than the long sides 36L and are inserted between the reinforcing plates 44. The reinforcing plates 44 and 46 are fixed at predetermined positions so as to correspond to the fixing band 38 when the top plate 36 is viewed in a plan view. Due to the reinforcing plates 44 and 46, the rigidity when the top plate 36 and the reinforcing plates 44 and 46 are considered as a whole is higher than that when only the top plate 36 is used.

Further, the shape of the reinforcing plate 44 is determined so that the fixing band 38 does not contact the top plate 36 near the short side 36S of the top plate 36. Further, the reinforcing plates 44, 4
The width W1 of 6 is formed to be wider than the width W of the fixing band 38. Therefore, the binding force of the fixing band 38 is dispersed over a wider area when the fixing band 38 is interposed between the reinforcing plates 44 and 46 than when the fixing band 38 directly contacts the top plate 36, and acts on the top plate 36. To do.

Next, the operation of the planographic printing plate packaging structure 32 of this embodiment will be described.

As described above, in the planographic printing plate packaging structure 32 of this embodiment, since the stacked bundle 12 composed of a plurality of planographic printing plates 10 is stacked on the stacking member 34, a large number of planographic printing plates are obtained. Even if it is 10, it can be handled as a package. Since the stacking member 34, the stack 12 and the top plate 36 are integrally bound by the fixing band 38, there is no accidental shift or collapse of the load. Further, since the gantry 40 and the top plate 36 are arranged on both end faces of the stack 12 in the stacking direction, the planographic printing plate 10 can be prevented from being deformed, damaged or altered.

Moreover, since the stacking member 34, the stack 12 and the top plate 36 are integrally bound, no bolts are used as in the prior art, so that the fastening work of the bolts is unnecessary and the packaging work is reduced. It can be done in time and effort. It is also possible to carry out the binding by the fixing band 38 by using a binding device which is generally used (for example, an automatic band hanging machine), which allows the packaging work to be performed with less time and labor. It will be possible.

Further, even when the lithographic printing plate packaging structure 32 is unpacked, depending on the type of the fixing band 38, it can be opened by cutting the fixing band 38 with a cutter knife or the like, thus improving workability. .

In the state where the fixing band 38 integrally binds the stacking member 34, the stack 12 and the top plate 36, the fixing band 38 is mainly in contact with the reinforcing plates 44 and 46, and The contact area with 36 is small. The binding force of the fixing band 38 is mainly due to the reinforcing plate 44,
It acts on the top plate 36 via 46. When considering the top plate 36 and the reinforcing plates 44 and 46 as a whole, the rigidity is
Since the height is higher than in the case of only, it is possible to prevent the top plate 36 from bending due to the binding force of the fixing band 38. Particularly, when the top plate 36 is formed to be larger than the upper surface of the stacked bundle 12, the fixing band 38 is provided on the side of the top plate 36.
Although the top plate 36 tends to warp upward when the binding force is applied, the warp of the top plate 36 can be reliably prevented even in such a case. Further, since the reinforcing plates 44 and 46 are wider than the fixing band 38, local concentration of the binding force from the fixing band 38 is relieved and a partial depression of the top plate 36 is prevented. ing. By preventing the top plate 36 from bending or denting in this way, the bound state can be reliably maintained.

Moreover, it is not necessary to increase the thickness of the top plate 36 itself in order to prevent the top plate 36 from being curved or dented. Therefore, by using a lightweight top plate 36,
Bundling work and unpacking work can be performed more easily.
Since the planographic printing plate packaging structure 32 is also lightweight, it can be easily transported.

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 depending on the size of the stack 12 (that is, the size of the lithographic printing plate 10 and the number of stacked plates), the required binding force, and the strength of the reinforcing member required corresponding to this binding force, etc. , Shape and position. Below, these examples are shown as each embodiment. In each embodiment, basically the same components, members and the like as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

FIG. 4 shows a planographic printing plate packaging structure 62 according to a second embodiment of the present invention.

The second embodiment is similar to the first embodiment in that the reinforcing plate 44 is fixed to the top plate 36, but instead of the reinforcing plate 46, a total of four reinforcing blocks 6 are provided.
The difference is that 4 is fixed.

The reinforcing block 64 includes the reinforcing plate 44 and the top plate 3.
It is arranged at a position corresponding to the fixing band 38 between the short side 36S of 6 and one end (outer end) 64A of the reinforcing block 64 coincides with the short side 36S when seen in a plan view. ing. In addition, the other end 64 of the reinforcing block 64
B is in contact with the reinforcing plate 44. The width W2 of the reinforcing block 64 is wider than the width W of the fixing band 38.

Also in the planographic printing plate packaging structure 62 of the second embodiment having such a structure, the loading band 34 and the stack 1 are fixed by the fixing band 38 without using bolts.
Since the two and the top plate 36 are integrally bound, the workability of the packaging work and the unpacking work is improved.

The reinforcing plate 44 can prevent the top plate 36 from being bent, and the reinforcing plate 44 and the reinforcing block 6 can be prevented.
4 can prevent the top plate 36 from being depressed. Further, since it is not necessary to thicken the top plate 36 to prevent these curves and dents, the thickness of the top plate 36 is reduced to reduce the weight, and the packaging work, the unpacking work and the transportation are facilitated. It also becomes possible.

FIG. 5 shows a planographic printing plate packaging structure 72 according to a third embodiment of the present invention.

In the third embodiment, the reinforcing plates 44 and 46 are not fixed to the top plate 36, but instead of these, substantially square reinforcing blocks 74 and 76 are fixed in plan view. .

There are four reinforcing blocks 74 in total,
Similar to the reinforcing block 64 of the second embodiment, one end 74A thereof is fixed so as to coincide with the short side 36S when seen in a plan view. Further, the total number of the reinforcing blocks 76 is four, and they are fixed so as to match the long sides 36L of the top plate 36. Further, these reinforcing blocks 74 and 76 are arranged at positions corresponding to the fixing band 38. In addition, the width W3 of the reinforcing blocks 74 and 76
Is wider than the width W of the fixing band 38.

Also in the planographic printing plate packaging structure 72 of the third embodiment having such a configuration, the loading member 34 and the laminated bundle 1 are fixed by the fixing band 38 without using bolts.
Since the two and the top plate 36 are integrally bound, the workability of the packaging work and the unpacking work is improved.

Further, the reinforcing blocks 74 and 76 can prevent the top plate 36 from being depressed. Further, since it is not necessary to thicken the top plate 36 to prevent the dent, it is possible to reduce the thickness of the top plate 36 to reduce the weight and make the packaging work, the unpacking work and the transportation easier. Become.

From the viewpoint of preventing the top plate 36 from bending, when the top plate 36 is viewed in plan, the reinforcing blocks 74,
It is preferable to secure the sizes of the reinforcing blocks 74 and 76 such that each of the portions 76 partially overlaps the stacked bundle 12.

FIG. 6 shows a planographic printing plate packaging structure 82 according to a fourth embodiment of the present invention.

In the fourth embodiment, unlike the first to third embodiments, it is assumed that the planographic printing plate has a longer and narrower shape, that is, the ratio of the long side to the short side is large. Therefore, the shape of the top surface of the stack 12 is more elongated. Corresponding to this, the gantry 40 and the top plate 36 are also made to have an elongated shape as compared with those of the first to third embodiments. Further, in the fourth embodiment, the three fixing bands 38 are wound at equal intervals and in parallel with the short side 36S of the top plate 36, but with the long side 36L. It is not wrapped in parallel directions.

To the top plate 36, three reinforcing plates 84 are fixed in parallel along the short side 36S thereof. Reinforcement plate 84
Is a length that continuously reaches from one of the long sides 36L to the other. Further, the three reinforcing plates 84 are arranged at equal intervals so as to be positioned corresponding to the fixing band 38.

The width W4 of the reinforcing plate 84 is equal to that of the fixing band 38.
Is wider than the width W.

Also in the lithographic printing plate packaging structure 82 of the fourth embodiment having such a configuration, the loading member 34 and the laminated bundle 1 are fixed by the fixing band 38 without using bolts.
Since the two and the top plate 36 are integrally bound, the workability of the packaging work and the unpacking work is improved.

The reinforcing plate 84 can prevent the top plate 36 from being curved, and the reinforcing plate 84 can prevent the top plate 36 from being depressed. Further, since it is not necessary to thicken the top plate 36 to prevent these curves and dents, the thickness of the top plate 36 is reduced to reduce the weight, and the packaging work, the unpacking work and the transportation are facilitated. It also becomes possible.

As described above, in the present invention, the bolts are fastened as in the prior art by integrally binding the loading member 34, the stack 12 and the top plate 36 with the fixing band 38. It makes packaging and unpacking operations easier compared to items. As the binding member of the present invention, the material is not limited to the resin described above as long as it is possible to integrally bind the stacked bundle 12 and the top plate 36 in this way,
The number of stacked bundles 12 may be an appropriate number depending on the weight and the like.

In the present invention, the top plate 36 is provided with reinforcing members (reinforcing plates 44, 46, reinforcing blocks 64, 74, 76,
By providing the reinforcing plate 84), the top plate 36 is prevented from being curved or dented. As the reinforcing member, the top plate 3 is thus
The material, the number, and the arrangement position are not particularly limited as long as the curvature and the depression of 6 can be prevented. For example, the same material as the top plate 36 may be used, or a different material from the top plate 36 may be used. Generally, the top plate 36 is often made of wood, but the reinforcing member can be made of wood correspondingly. Further, even when a metal reinforcing member is fixed to the wooden top plate 36, the top plate 36 itself can be made thin in the present invention, so that the top plate made of metal can provide the necessary strength and rigidity. It is possible to make it lighter in weight compared to the one that secures. further,
Corrugated board, paperboard, molded paper pulp, paper honeycomb, polyethylene foam, polystyrene foam, urethane foam, air cap, rubber, etc. can be applied.

As the arrangement position of the reinforcing members, for example, four reinforcing plates may be fixed so as to surround the top plate 36.

Further, the end portion of the reinforcing member (for example, the longitudinal end portion of the reinforcing member 44 shown in FIGS. 1 to 4, the one end 64A of the reinforcing block 64 shown in FIG. 5, etc.) is not necessarily the top plate 36.
However, in order to reliably prevent the top plate 36 from being curved or dented, it is preferable that these are aligned in a plan view.

Further, in the above description, the case where the planographic printing plates 10 are so-called flat stacked has been described as an example, but it goes without saying that the stacking direction is not limited to this. For example, the lithographic printing plate 10 has a stack 12 so that it has a vertical direction.
It may have a configuration in which the units are leaned against each other (so-called vertical stacking). In the vertically stacked configuration, the stacking member often has a support plate that obliquely supports the stacked bundle 12 at one end face, and the end plate is often arranged in contact with the stacked bundle 12 from the opposite side of the support plate. Therefore, this end plate may be provided with the reinforcing member according to the present invention, and the end plate, the stack 12, and the support plate (loading member) may be integrally bound with the fixing band.

[0078]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it is possible to improve workability in packaging work and unpacking work, and prevent deformation of the end plates without increasing weight.

[Brief description of drawings]

FIG. 1 is a perspective view showing a step of forming a lithographic printing plate packaging structure according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a step of forming a lithographic printing plate packaging structure according to the first embodiment of the present invention.

FIG. 3 is a perspective view showing a planographic printing plate packaging structure according to the first embodiment of the present invention.

FIG. 4 is a perspective view showing a planographic printing plate packaging structure according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing a planographic printing plate packaging structure according to a third embodiment of the present invention.

FIG. 6 is a perspective view showing a planographic printing plate packaging structure according to a fourth embodiment of the present invention.

FIG. 7 is a perspective view showing a conventional lithographic printing plate packaging structure.

FIG. 8 is a perspective view showing a conventional lithographic printing plate packaging structure.

[Explanation of symbols]

10 planographic printing plates 12 stacked bundle 14 interleaf paper 22 Protective cardboard 32 Planographic printing plate packaging structure 34 Loading member 36 Top plate (end plate) 38 Fixing band (Bundling member) 44 Reinforcement plate (reinforcement member) 46 Reinforcement plate (reinforcement member) 62 Planographic printing plate packaging structure 64 Reinforcement block (reinforcement member) 72 Planographic printing plate packaging structure 74 Reinforcement block (reinforcement member) 76 Reinforcement block (reinforcement member) 82 Planographic printing plate packaging structure 84 Reinforcement plate (reinforcement member)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B65D 75/26 B65D 75/26 F term (reference) 2H114 AA04 AA23 AA24 BA01 BA10 EA01 EA02 EA10 GA31 3E063 AA03 BA08 EE03 FF20 3E067 AA12 AA24 AB90 AC14 BA08A BA15A BA18A BB01A BB25A BC06A CA05 CA12 DA03 EA24 EA27 EB01 ED04 FA01 GD10 3E085 BD08 BG10

Claims (3)

[Claims] 1. A lithographic printing plate stacking member configured to stack a stack of a plurality of lithographic printing plates stacked in a thickness direction, and a contacting arrangement on the opposite side of the lithographic printing plate stacking member to the stacked bundle. An end plate, a binding member that wraps the lithographic printing plate stacking member, the stacked bundle and the end plate to bind them together, and is attached to the end plate so as to be located between the end plate and the binding member. And a reinforcing member that relieves the pressure applied from the binding member to act on the end plate, and a lithographic printing plate packaging structure. 2. The planographic printing plate packaging structure according to claim 1, wherein the reinforcing member has higher rigidity than the end plate. 3. The planographic printing plate according to claim 1, wherein the reinforcing member has a shape that is continuous from one end side to the other end side of the end plate along the binding member. Printing plate packaging structure.