JP2007290777A - Packing box for planographic printing plate, and packing structure of planographic printing plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing box for a planographic printing plate which does not cause damage to a coated membrane of the planographic printing plate, and moreover, by which it is possible to solve various problems such as management corresponding to cost reduction and multiple kinds, and the packing structure of the planographic printing plate which has used this packing box for the planographic printing plate. <P>SOLUTION: This is the packing box 30 for the planographic printing plate packages one or more sheets of corrugated cardboard paper are formed by being folded by holding a laminated body 20 of the planographic printing plate inside. The end region of the corrugated cardboard paper is turned up and side faces 44T, 48T of the tip of the end region are arranged so as to face the side face of the laminated body, and the parallel degree of the side face of the tip of the end region with the side face of the laminated body is 30 or lower. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a lithographic printing plate packaging box and a lithographic printing plate packaging structure, and more particularly to a lithographic printing plate packaging box suitably used for a laminate in which lithographic printing plates and interleaf sheets are alternately laminated. And a lithographic printing plate packaging structure using the lithographic printing plate packaging box.

  In recent plate making methods (including electrophotographic plate making methods), lithographic printing 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 subjecting a support such as a sheet-like or coil-like aluminum plate to surface treatment such as graining, anodizing, silicate treatment, and other chemical conversion treatment alone or in combination, and then 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 treatment.

  This planographic printing plate is subjected to plate making processing such as exposure, development processing, and gumming, and is set in a printing machine. Then, ink is applied to the lithographic printing plate set in the printing machine, and this is transferred to print characters, images, and the like on the paper surface.

  By the way, when a plurality of planographic printing plates are stacked and transported, in order to protect the coating film (image forming surface) coated on the support, paper called interleaving paper may be brought into contact with the coating film. In particular, in order to efficiently handle lithographic printing plates, it is possible to stack a plurality of lithographic printing plates in the thickness direction to form a laminated bundle of lithographic printing plates, and to handle the packaged bundles in a packaged state. In this case, the laminated bundle is generally packaged and stored in a packaging box such as cardboard.

  This packaging box has various problems such as cost reduction, prevention of coating film damage, management corresponding to various types, etc., and various proposals have been made by the present applicant to address each of these problems (for example, patents) Literature 1 to Patent Literature 8, etc.).

  Among these, Patent Document 1 discloses the content of creating a packaging box by bending an end of a bottom plate. Patent Document 2 discloses the contents of a package that covers only the outer periphery of a laminated bundle. Patent Document 3 discloses the contents of a package with a binding string. Patent Document 4 discloses the contents of a method for manufacturing a corrugated cardboard outer packaging paper.

  Patent Document 5 discloses the contents of a packaging box in which a tubular structure reinforcing material is attached to an end portion. Patent Document 6 discloses the contents of a protective member that absorbs energy of an external force corresponding to each side. Patent Document 7 discloses the contents of assembling a packaging box by folding the end portions of the bottom plate. Patent Document 8 discloses the use of a packaging material with low moisture permeability without using aluminum foil or the like.

And by implementing these various proposals, it is said that the desired effect can be obtained.
Japanese Patent Laid-Open No. 54-12996 JP-A-1-99976 JP-A-1-45273 JP-A-1-253431 Japanese Patent Laid-Open No. 10-16946 JP 2000-95271 A Japanese Patent Laid-Open No. 10-269456 JP-A-6-122469

  However, at present, none of the above-described various problems required for a lithographic printing plate packaging structure have been solved. For example, although the cost can be reduced, damage to the coating film is not prevented, or the cost can be reduced, but there is a problem in management corresponding to various types.

  Specifically, for example, according to Patent Document 2 described above, the protection / buffer function against external force is poor, and the coating film is not prevented from being damaged. Further, according to Patent Document 5, light leakage is likely to occur from the gap between the packaging boxes, and the coating film is likely to be covered with light. According to Patent Document 6, the light shielding property in the box can be secured, but the structure is complicated and expensive. There is also a problem that dismantling at the time of disposal is difficult.

  Hereinafter, the problems of the current planographic printing plate packaging structure will be described with reference to the drawings. 9 and 10 are partial cross-sectional views in the vicinity of the edge of a conventional lithographic printing plate packaging structure. As shown in FIGS. 9 and 10, the planographic printing plate 12 and the interleaving paper 10 that protects the coating film are alternately stacked in the thickness direction, and protective cardboard (not shown) is further formed on the upper and lower surfaces. ) Is arranged, and a laminated bundle 20 of the planographic printing plate 12 is configured. The lithographic printing plate packaging structure 4 is configured by packaging (interior) the laminated bundle 20 with interior paper (not shown) and storing the packaging structure in the lithographic printing plate packaging box 2.

  The lithographic printing plate packaging box 2 is a box formed by folding corrugated paper. Among these, the thing of FIG. 9 is comprised by laminating | stacking upper part 2A and lower part 2B. Each of the upper portion 2A and the lower portion 2B is formed by folding the corrugated paper twice, and a portion 2C facing the left side surface of the laminated bundle 20 is formed in a mountain shape. Therefore, the parallelism between the left side surface of the laminated bundle 20 and the portion 2C is in a poor state. That is, the clearance between the portion 2C and the left side surface of the laminated bundle 20 changes from C to C ', which causes the laminated bundle 20 to move inside the box, which is not preferable in terms of preventing damage to the coating film.

  On the other hand, the thing of FIG. 10 is a box formed by folding corrugated paper into a U-shape and forming this double. Even in this structure, the parallelism between the left side surface of the laminated bundle 20 and the portion 2D facing it is in a poor state. Therefore, the laminated bundle 20 moves inside the box, which is not preferable in terms of preventing damage to the coating film.

  The present invention has been made in view of such circumstances, and does not cause damage to the coating film of the lithographic printing plate, and can solve various problems such as cost reduction and management corresponding to various types. It is an object of the present invention to provide a lithographic printing plate packaging box and a lithographic printing plate packaging structure using the lithographic printing plate packaging box.

  In order to achieve the above object, the present invention provides a lithographic printing plate packaging box in which one or more corrugated paper sheets are folded and formed to accommodate and package a laminate of a lithographic printing plate therein. The end portion of the corrugated cardboard is folded so that the side surface of the end of the end is opposed to the side of the laminate, and the parallelism between the side of the end of the end and the side of the laminate is 30 degrees or less. A lithographic printing plate packaging box is provided.

  According to the present invention, the side surface of the end edge of the corrugated paper folded is disposed so as to face the side surface of the laminate, and the parallelism between the side surface of the end edge and the side surface of the laminate is 30 degrees or less. Therefore, it is easy to restrain the movement of the laminated bundle inside the box, which is preferable in terms of preventing damage to the coating film.

  In the present invention, the shape of the laminate is generally preferably rectangular. In addition, according to the JIS standard, “parallelism” is a space between two parallel planes having a certain sensation parallel to the reference plane, but in this specification, It means the angle formed by one surface with the other surface.

  Further, the present invention provides a lithographic printing plate packaging box, in which one or more corrugated paper sheets are folded and formed so that a laminate of the lithographic printing plates is accommodated therein and packaged. Is disposed so that the side surface at the end of the end is opposed to the side of the laminate, and the spacer member is disposed on the side of the four sides of the laminate that is not opposed to the end of the end. Is provided, and the parallelism between the side surface of the spacer member and the side surface of the laminated body is 30 degrees or less.

  According to the present invention, the side surface of the folded end of the corrugated cardboard is disposed so as to face the side surface of the laminate, and is not opposed to the end tip of the four side surfaces of the laminate. A spacer member can be arranged on the side surface side, and the parallelism between the side surface of the spacer member and the side surface of the laminated body is 30 degrees or less, so it is easy to restrain the movement of the laminated bundle inside the box. From the viewpoint of preventing damage to the coating film.

  In the present invention, it is preferable that two opposite sides of the end side portion of the corrugated paper are folded.

  Thus, by folding the two opposite sides, it is easy to restrain the movement of the laminated bundle from inside the box from both sides, and it is possible to further reduce problems that cause damage to the coating film of the lithographic printing plate.

  Moreover, in this invention, it is preferable that the clearance of the side surface of the said edge side tip and the side surface of the said laminated body is 10 mm or less. Moreover, in this invention, it is preferable that the clearance between the side surface of the said spacer member and the side surface of the said laminated body is 10 mm or less. Thus, if the clearance is 10 mm or less, it is easy to restrain the movement of the laminated bundle inside the box, and the problems that cause damage to the coating film of the lithographic printing plate can be further reduced.

  The present invention also provides a lithographic printing plate packaging structure, wherein the lithographic printing plate is packaged using the lithographic printing plate packaging box. According to the present invention, since the lithographic printing plate is packaged using the above-mentioned various lithographic printing plate packaging boxes, it is easy to restrain the movement of the laminated bundle inside the box, which is preferable in terms of preventing damage to the coating film.

  As described above, according to the present invention, it is possible to provide a lithographic printing plate packaging box that hardly causes damage to the coating film of the lithographic printing plate and a lithographic printing plate packaging structure that uses this lithographic printing plate packaging box.

  A preferred embodiment (first embodiment) of a lithographic printing plate packaging box and a lithographic printing plate packaging structure using the lithographic printing plate packaging box according to the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a process of packaging the planographic printing plate 12 using the interior paper 22 and the interleaving paper 10. As shown in FIG. 1, the planographic printing plate 12 and the interleaving paper 10 that protects the coating film are alternately stacked in the thickness direction, and the protective cardboards 16 and 16 are disposed on the upper and lower surfaces. A laminated bundle 20 of the planographic printing plate 12 is configured.

  The laminated bundle packaging structure 24 is configured by packaging (interior) the laminated bundle 20 with the interior paper 22. The protective cardboard 16, 16 is not essential.

  The lithographic printing plate 12 is coated with a coating film (a photosensitive layer in the case of a photosensitive printing plate, a thermal layer in the case of a thermal printing plate) on a thin aluminum support formed in a rectangular plate shape. Is formed. The coating film is subjected to plate making processing such as exposure, development processing, and gumming, and is set in a printing machine. By applying ink, characters, images, and the like are printed on the paper surface.

  Note that the lithographic printing plate 12 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.

  In addition, if it is the above structures, the specific structure of the lithographic printing plate 12 will not be specifically limited. For example, by using a lithographic printing plate for a laser printing plate of a heat mode method and a photon method, a lithographic printing plate that can be directly made from digital data can be obtained.

  Moreover, the lithographic printing plate 12 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 embodiments of the lithographic printing plate of the present invention include the following embodiments (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) An embodiment 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 of a compound that generates radicals upon irradiation with laser light, a layer containing an alkali-soluble binder, and a polyfunctional monomer or prepolymer, and an oxygen blocking layer.

  (4) An embodiment in which the photosensitive layer is composed of 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 polymerization layer containing a polyfunctional monomer and a polyfunctional binder, a layer containing silver halide and a reducing agent, and an oxygen blocking layer.

  (6) A mode in which the photosensitive layer includes two layers of a layer containing a novolak resin and naphthoquinone diazide 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 2 to 3 layers composed of a laser light absorbing layer to be 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 that generates a sulfonic acid or a carboxylic acid by an acid in the side chain, and an acid generator by absorbing visible light The aspect containing the compound which gives energy to.

  (10) The 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 crosslinked 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 that is exposed with a laser beam or a heat-sensitive type lithographic printing plate may be used (for example, the above (1) to (3). In the case of such a high-sensitivity type lithographic printing plate, the use of the lithographic printing plate packaging material of the present invention can reliably prevent the quality of the image forming surface from being deteriorated.

  The lithographic printing plate 12 of this embodiment (the lithographic printing plates of all aspects (1) to (11) described above) is an automatic plate making machine having an automatic plate feeding function in a state where the laminated bundle 20 is configured. In some cases, the plate is set on a so-called plate setter or the like and supplied (plate feeding) to the plate making process.

  Further, when the paper is set on an automatic plate making machine having an automatic plate feeding function, a so-called plate setter or the like, there is no protective cardboard 16, and the planographic printing plate 12 and the interleaf paper 10 are set in small quantities of about two sheets each. There is also a case.

  As described above with reference to FIG. 1, the interleaf paper 10 for protecting the coating film and the lithographic printing plate 12 are alternately stacked in the thickness direction, and the protective cardboard 16 is disposed on the upper and lower surfaces. Thus, a laminated bundle 20 of the planographic printing plate 12 is configured.

  The number of lithographic printing plates 12 constituting one laminated bundle 20 is not particularly limited, but may be, for example, 10 to 100 from the viewpoint of efficient transportation and storage. Further, when the laminated bundle 20 is constituted by 10 to 100 lithographic printing plates 12 as described above, these means are fixed by a fixing means such as an adhesive tape so that the lithographic printing plate 12 and the protective cardboard 16 are not displaced. Is preferably fixed.

  FIG. 2 is a perspective view showing the appearance of the laminated bundle packaging structure 24. The laminated bundle packaging structure 24 is constructed by interiorizing the laminated bundle 20 configured as described above with an interior paper 22 and sticking the interior paper 22 at a predetermined position with adhesive tapes 28, 28.

  With this configuration, the interior paper 22 is fixed so as not to spread unintentionally or fall off, and the planographic printing plate 12 is reliably shielded from light and moisture. As described above, in the present embodiment, the laminated bundle packaging structure 24 is configured by decorating the laminated bundle 20 with the interior paper 22. The laminated bundle packaging structure 24 is further packaged (accommodated) by the planographic printing plate packaging box according to the present invention.

  Next, the lithographic printing plate packaging box 30 according to the present invention will be described in detail. The lithographic printing plate packaging box 30 is formed by folding one or more corrugated paper sheets 32, and is a packaging box for accommodating and packaging a laminated bundle packaging structure 24 (a lithographic printing plate laminate) inside. is there.

  FIG. 3 is a view showing a manufacturing method (assembly method) of the lithographic printing plate packaging box 30. In FIG. 3, the assembly process proceeds in the order of (A) to (D). FIG. 3A shows a rectangular corrugated paper 32 that is a raw material of the lithographic printing plate packaging box 30.

  First, as shown in FIG. 3B, the discarded portions H, H... Of the corrugated cardboard 32 in the vertical direction and the like are cut out to form folded lines (also referred to as ruled lines) which are bold lines in the figure. Next, as shown in FIG. 3 (C), the left and right discarded portions H, H... Are cut off, and a folding line (thick line in the figure) is formed.

  In the state of FIG. 3C, each portion where the lithographic printing plate packaging box 30 is developed can be identified by the folding line. That is, the bottom plate 36, the front side top plate 38A, the back side top plate 38B, the front side plate 40A, the back side plate 40B, the lower left side plate 42A, the lower right side plate 42B, and the upper left front side plate 42C. The outer surface of the rectangular parallelepiped (packaging box) can be formed by the upper right front side plate 42D, the upper left back side plate 42E, and the upper right back side plate 42F.

  Further, the bottom left folded portion 44A, the bottom right folded portion 44B, the top front left folded portion 46A, the top front right folded portion 46B, the top left folded portion 48A, and the top right folded portion 48B are formed into a rectangular parallelepiped. A folded portion to the inner surface of the (packaging box) can be formed.

  Next, the bottom left folded portion 44A, the bottom right folded portion 44B, the top front left folded portion 46A, the top right front folded portion 46B, the top left folded portion 48A, and the top right folded portion 48B are respectively connected to the inner surface. It is folded back to the side (upper side in the figure) to form a state 30 ′ as shown in FIG. In FIG. 3D, the laminated bundle packaging structure 24 is placed on the bottom plate 36.

  Next, the front side top plate 38A and the back side top plate 38B are folded back to the inner surface side (upper side in the figure), and the lithographic printing plate packaging box 30 is completed. FIG. 4 is a plan view of the lithographic printing plate packaging box 30, and the upper surface is a front side top plate 38 </ b> A and a back side top plate 38 </ b> B.

  By manufacturing (assembling) the lithographic printing plate packaging box 30 in this way, it is possible to easily manufacture (assemble) a packaging box that matches the size of the product (laminated bundle packaging structure 24), thereby reducing costs and supporting a wide variety of products. It is preferable to cope with various problems such as management. In particular, a development view of the lithographic printing plate packaging box 30 in accordance with the product size is automatically designed by computer means, and the design data is used to cut out the discarded portions H, H... If the method of controlling the apparatus for forming the) is adopted, cost reduction, management corresponding to various types, and the like become easier.

  Next, the folded structure of the end portion (portion shown by the hatched portion in FIG. 3C), which is a characteristic portion of the present invention, will be described. As an example of the explanation of the folded structure, the example of the left end portion of the planographic printing plate packaging box 30 in FIG. 3 will be described. 5 is a cross-sectional view taken along line 5-5 of FIG. 4 and is a partially enlarged view showing the vicinity of the left end portion of the lithographic printing plate packaging box 30. FIG.

  As shown in FIG. 5, the end portion of the corrugated paper is folded, and the side surface of the end of the end side is disposed so as to face the side surface of the laminated bundle 20 (or the laminated bundle packaging structure 24). Yes. More specifically, the end side portion of the back side top plate 38B is folded, the upper left back side plate 42E forms the left side wall, and the top left side folded portion 48A is parallel to the back side top plate 38B. Then, the side surface of the tip end 48T of the top left folded portion 48A is disposed so as to face the upper half of the side surface of the stacked bundle 20 (laminated body).

  Further, the end side portion of the bottom plate 36 is folded back, the lower left side plate 42A forms a left side wall, and the bottom left side folded portion 44A is parallel to the bottom plate 36. Then, the side surface of the end side tip 44T of the bottom left folded portion 44A is disposed so as to face the lower half of the side surface of the laminated bundle 20 (laminated bundle packaging structure 24).

  Further, the parallelism between the side surface 48T at the end of the top left folded portion 48A and the upper half of the side surface of the stacked bundle 20 is 30 degrees or less, and the side surface 44T at the tip end of the bottom left folded portion 44A is laminated. The parallelism with the lower half of the side surface of the bundle 20 is 30 degrees or less. Thus, if the parallelism of the part which contacts the side surface of the lamination | stacking bundle 20 is favorable, it will be easy to restrain the movement of the lamination | stacking bundle 20 inside a box, and it is preferable at the point of damage prevention of a coating film.

  Furthermore, the clearance C1 between the side surface 48T at the end of the top left folded portion 48A and the upper half of the side surface of the stacked bundle 20 is 10 mm or less, and the side surface 44T at the end of the bottom left folded portion 44A and the stacked bundle. The clearance C2 between the lower half of the 20 side faces is 10 mm or less. As described above, if the clearance of the portion contacting the side surface of the laminated bundle 20 is 10 mm or less, the movement of the laminated bundle 20 inside the box is easily restricted, and the coating film of the planographic printing plate is damaged. Can be further reduced.

  As shown in FIG. 5, the left side wall (upper left side plate 42E) formed by folding the end portion of the back side top plate 38B and the end side portion of the bottom plate 36 are formed by folding. The left side wall (lower left side plate 42A) is inclined in the same manner as in the conventional example (part 2C in FIG. 9, part 2D in FIG. 10), but this part does not necessarily contact the laminated bundle 20, so the laminated bundle 20 No impact on quality.

  Next, the corrugated paper 32 used for such a lithographic printing plate packaging box 30 will be described. As the corrugated paper 32, various types of A (strong), C, B, and E (weak) defined in JIS Z 1516 can be used.

  Regarding the layer structure of the corrugated paper 32, various types of double-double-sided AAA (strong), double-sided AA, and double-sided A (weak) specified in JIS Z 1516 and others can be used.

  Various types of AA (strong), A, B, and C (weak) defined in JIS P 3902 and the like can be used for the types of liners on the front and back sides of the corrugated paper 32.

Various types of weights of 440 g / m ² (strong) to 160 g / m ² (weak) can be used for weighing the front and back liners of the corrugated paper 32.

  Various types of cores A (strong), B, and C (weak) defined in JIS P 3904 can be used as the type of the core of the corrugated paper 32.

As for the weight of the core of the corrugated paper 32, various kinds of 280 g / m ² (strong) to 100 g / m ² (weak) can be used.

Alternative materials for corrugated cardboard 32, thick weighing 200g ^{/ m 2} ~2000g ^/ m 2 can be used.

  Next, another embodiment (second embodiment) of the present invention will be described. In the present embodiment, the manufacturing (assembling) method is substantially the same as the first embodiment described above except that two corrugated paper sheets 32 are laminated to manufacture (assemble) the lithographic printing plate packaging box 130. The illustration and detailed description of are omitted.

  FIG. 6 is a partially enlarged view showing the vicinity of the left end portion of the planographic printing plate packaging box 130 in the present embodiment, and corresponds to FIG. 5 of the first embodiment.

As shown in FIG. 6, end portions of the corrugated cardboard sheets 32 and 132 are folded back, and the side surfaces of the end portions of the end sides are disposed so as to face the side surfaces of the stacked bundle 20 (laminated body). And it arrange | positions so that the side surface T1 of the edge side tip of an upper side folding | returning part may oppose the side surface upper half of the lamination | stacking bundle 20 (laminated body). Moreover, it arrange | positions so that the side surface T2 of the edge side front-end | tip of a lower side folding | turning part may oppose the side surface lower half of the laminated bundle 20 (laminated body).

  Furthermore, the parallelism between the side surface T1 at the end of the upper folded portion and the upper half of the side surface of the stacked bundle 20 is 30 degrees or less, and the side surface T2 at the end of the lower folded portion and the side surface of the stacked bundle 20 The parallelism with the lower half is 30 degrees or less. Thus, if the parallelism of the part which contacts the side surface of the lamination | stacking bundle 20 is favorable, it will be easy to restrain the movement of the lamination | stacking bundle 20 inside a box, and it is preferable at the point of damage prevention of a coating film.

  Further, the clearance C3 between the side surface T1 at the end of the upper folded portion and the upper half of the side surface of the laminated bundle 20 is 10 mm or less, and the side surface T2 at the distal end of the lower folded portion and the lower side of the laminated bundle 20 The clearance C4 with the half is 10 mm or less. In this way, if the clearance between the side surface of the laminated bundle 20 and the portion in contact with it is 10 mm or less, the movement of the laminated bundle 20 inside the box can be easily restricted, and the coating film of the planographic printing plate is damaged. Problems can be further reduced.

  Next, still another embodiment (third embodiment) of the present invention will be described. In the third embodiment, the end side portion of the corrugated paper is folded back, and the side surface of the end of the end side is disposed so as to face the side surface of the laminated body. The spacer member can be arranged on the side of the side that is not opposed to the side tip. In the present embodiment as well, the illustration and detailed description of the manufacturing (assembly) method are omitted as in the second embodiment.

  FIG. 7 is a diagram showing a form in the course of manufacture (assembly) in the present embodiment, and corresponds to FIG. 3D of the first embodiment. FIG. 8 is a partially enlarged view showing the vicinity of the left end portion of the lithographic printing plate packaging box 40 in the present embodiment.

  As shown in FIG. 7, the laminated bundle packaging structure 24 is placed on the central portion (bottom plate) of the corrugated paper 2, and spacer members S and S are arranged so as to be in close contact with both side surfaces of the laminated bundle packaging structure 24. ing. The spacer member S is a rod-like member having a thickness substantially the same as that of the laminated bundle packaging structure 24 and a rectangular (rectangular) cross section.

  Therefore, as shown in FIG. 8, the parallelism between the right side surface of the spacer member S and the left side surface of the laminated bundle 20 (laminated bundle packaging structure 24) is 30 degrees or less. Thus, if the parallelism of the spacer member S that contacts the side surface of the laminated bundle 20 is good, the movement of the laminated bundle 20 inside the box can be easily restrained, which is preferable in terms of preventing damage to the coating film.

  Further, the clearance C5 between the side surface of the spacer member S and the side surface of the laminated bundle 20 (laminated bundle packaging structure 24) is 10 mm or less (substantially zero). In this way, if the clearance between the side surface of the laminated bundle 20 and the portion in contact with it is 10 mm or less (substantially zero), the movement of the laminated bundle 20 inside the box can be easily restricted, and the coating film of the lithographic printing plate It is possible to further reduce defects that cause damage.

  In the planographic printing plate packaging box 40 of FIG. 8, the parallelism between the left side surface of the spacer member S and the portion 2D facing it is poor, as in FIG. 10 of the conventional example described above. However, the function of restraining the movement of the laminated bundle 20 inside the box is not affected at all.

  As described above, according to the present invention, the lithographic printing plate that does not cause damage to the coating film of the lithographic printing plate 12 and that can solve various problems such as cost reduction and management corresponding to various types. And a lithographic printing plate packaging structure using the lithographic printing plate packaging box.

  The embodiment of the planographic printing plate packaging box and the planographic printing plate packaging structure using the planographic printing plate packaging box according to the present invention has been described above, but the present invention is not limited to the above embodiment, Various aspects can be taken.

  For example, in the above embodiment, corrugated paper is adopted as the packaging material for the lithographic printing plate, but other packaging materials, for example, cardboard that functions in the same way as corrugated paper, may be used, and this is also the case. The same effect as the form can be obtained.

The perspective view which shows the process of packaging a planographic printing plate using the packaging material for planographic printing plates Perspective view showing appearance of laminated bundle packaging structure The figure which shows the manufacturing method of the packaging box for lithographic printing plates which concerns on this invention Plan view of a packaging box for a lithographic printing plate according to the present invention Sectional view along line 5-5 in FIG. The partially expanded view which shows the left end part vicinity of the packaging box for lithographic printing plates of other embodiment Furthermore, the top view which shows the state which expand | deployed the packaging box for lithographic printing plates of other embodiment Furthermore, the elements on larger scale which show the left end part vicinity of the packaging box for lithographic printing plates of other embodiment Partial enlarged view showing the vicinity of the left end of a conventional lithographic printing plate packaging box Partial enlarged view showing the vicinity of the left end of a conventional lithographic printing plate packaging box

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Interleaving paper (Wrapping material for lithographic printing plates), 12 ... Lithographic printing plate, 16 ... Protective cardboard, 20 ... Laminated bundle, 22 ... Interior paper, 24 ... Laminated bundle packaging structure, 30 ... Lithographic printing plate packaging box 32: Corrugated paper, S: Spacer member

Claims (6)

In a packaging box for a lithographic printing plate, in which one or more corrugated paper sheets are folded and formed to accommodate and package a laminate of lithographic printing plates inside,
The end portion of the corrugated paper is folded so that the side surface of the end of the end is opposed to the side of the laminate, and the parallelism between the side of the end of the end and the side of the laminate is 30 degrees or less. A packaging box for a lithographic printing plate, characterized in that In a packaging box for a lithographic printing plate, in which one or more corrugated paper sheets are folded and formed to accommodate and package a laminate of lithographic printing plates inside,
The end side portion of the corrugated paper is folded so that the side surface of the end of the end is opposed to the side of the laminate, and is opposed to the end of the four sides of the laminate. A lithographic printing plate packaging box, characterized in that a spacer member can be arranged on the side of the non-side surface, and the parallelism between the side surface of the spacer member and the side surface of the laminate is 30 degrees or less.   The lithographic printing plate packaging box according to claim 1 or 2, wherein two opposite sides of the end portion of the corrugated paper are folded.   The lithographic printing plate packaging box according to claim 1 or 3, wherein a clearance between the side surface of the end edge and the side surface of the laminate is 10 mm or less.   The lithographic printing plate packaging box according to claim 2 or 3, wherein a clearance between a side surface of the spacer member and a side surface of the laminate is 10 mm or less.   A lithographic printing plate packaging structure, wherein the lithographic printing plate is packaged using the lithographic printing plate packaging box according to any one of claims 1 to 5.

Images