JP2005231715A - Lithographic plate package body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a double-side-openable outer box capable of being opened in a printing side and non-printing side of a bundle of lithographic plates, which can be used for setting the bundle of the plates either with the printing face side facing upward or with the non-printing face side facing upward in the setter by avoiding reduction in strength, and in which the plates are hardly bent permanently because the plates are hardly deformed even if the box is leaned against something for storage. <P>SOLUTION: The lithographic plate package body 32 is formed by packaging the bundle 12 of stacked lithographic plates 10A with an outer box 22 made of corrugated cardboard. The outer box 22 has opening faces 26, 28 each having openable double left/right flaps 26A, 26B or 28A, 28B in the print face A side and the non-printing face B side of the bundle 12. The opening 30 in the opening face 26 on the face A side and the opening 30 in the opening face 28 on the face B side are shifted to prevent them to overlap with each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a lithographic printing plate package, and in particular, a lithographic plate convenient for opening the back side of a laminated bundle of lithographic printing plates such as PS plates with the back side opposite to the printing side of the lithographic printing plate facing up. It relates to a printing plate package.

  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, the heat-sensitive layer (hereinafter collectively referred to as “coating film”, the surface on which the coating film is applied is referred to as “printing surface”, and the surface on which the coating film is not formed is referred to as “anti-printing surface”) and drying It is manufactured by cutting to a desired size after processing.

  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.

  During the production of a lithographic printing plate, a plurality of lithographic printing plates cut into a rectangular shape having a predetermined size may be laminated in the thickness direction to form a laminated bundle. By packaging this laminated bundle, a plurality of planographic printing plates can be handled together (transported, stored, etc.), and the handling efficiency can be improved.

  By the way, as a laminated bundle outer box, a corrugated cardboard outer box having a double-sided opening surface as in Patent Document 1 has been used. On the other hand, in the recent CTP plate, there is a case where the back side (the side opposite to the printing side), which is the opposite side of the printing side, is set on the setter. As shown in Patent Document 2, the laminated bundle is anti-opened. Patent Document 3 discloses a packaging form for packaging the side as a printing surface, and a reversing device for reversing the laminated bundle to perform the packaging form. In order to carry out this packaging form, if the printing surface is processed downward from the sheet processing stage, it is not necessary to invert in the subsequent steps, but the printing surface is protected in lithographic printing plate sheet processing. It is preferable to process with the printing surface up because of the stability of insertion and conveyance of the slip sheet, and it is necessary to invert the laminated bundle after stacking the lithographic printing plate with the printing surface up to form a laminated bundle is there.

For this reason, as in Patent Document 4, an exterior box having an opening surface on both the printing surface side and the non-printing surface side of the laminated bundle has been proposed. According to this, it is possible to cope with either the case where the printing surface side is set on the setter or the case where the non-printing surface side is set on the setter.
Japanese Patent Laid-Open No. 54-12996 JP 2002-29173 A JP 2002-370818 A JP 2001-194774 A

  However, one of the roles of the outer packaging box is to prevent the lithographic printing plate package from bending when storing the lithographic printing plate package in which the laminated bundle is wrapped up. In the outer box, the strength of the outer box becomes weak because of double-sided opening. Therefore, in the case of patent document 4, there exists a fault that the packaging body for lithographic printing plates is easy to bend and bend in a center part, and a bending wrinkle will be formed in a laminated bundle. A laminated bundle having a large bending curve may not be usable.

  As a countermeasure against this, in Patent Document 4, the opening portion of the opening surface on the side opposite to the printing surface of the outer box is perforated, but a force for tearing the perforation is required to open the opening portion of the perforation. Has the disadvantage that it cannot be opened and it takes time to open. Although it is possible to open the package from the side surface of the outer packaging box, if the laminated bundle is taken out from the side opening, the laminated bundle tends to collapse. Therefore, even when opening from the side, a large opening lid structure must be provided so as to open from the side to the top of the outer box, and the area of the opening lid increases, so a wide handling space is required for opening. There are drawbacks.

  The present invention has been made in view of such circumstances, and the strength does not become weak even in a double-sided outer packaging box on the printing surface side and the non-printing surface side of a laminated bundle of planographic printing plates. It can be used for both set-up on the setter with the print side up and set on the setter with the anti-print side up and bends into a stacked bundle because it is difficult to bend when stood and stored. An object of the present invention is to provide a lithographic printing plate package capable of suppressing wrinkles.

  In order to achieve the above object, claim 1 of the present invention is a lithographic printing plate package formed by packaging a stack of lithographic printing plates in a cardboard outer box, and the outer box opens the left and right flaps. An opening surface is formed on both the printing surface side and the non-printing surface side of the laminated bundle, and the opening portion on the printing surface side and the opening portion on the anti-printing surface side overlap each other. It is characterized by being formed at a position that does not become.

  According to the planographic printing plate package of the present invention, the exterior box is opened on both sides of the printing surface side and the non-printing surface side so that the positions of the openings on both surfaces do not overlap each other. As a result, even if it is a double-sided exterior box, the strength will not be weakened, so when setting it on the setter with the print side up or setting it on the setter with the anti-print side up Moreover, since it is difficult to bend even when stood and stored, it is possible to suppress bending and wrinkling on the laminated bundle.

  A second aspect of the present invention is the method according to the first aspect, wherein the width dimension of the left and right flaps for opening the opening surface on the printing surface side and the opening surface on the opposite printing surface side of the outer box is formed to be asymmetrical between the left and right sides. The asymmetry is formed so that the opening surface on the printing surface side and the opening surface on the opposite printing surface side are opposite to each other.

  According to claim 2, the width dimension of the left and right flaps for unsealing the opening surface on the printing surface side and the opening surface on the non-printing surface side of the outer box is made asymmetrical, and the left-right asymmetry is opened on the printing surface side. By forming the surface and the unprinted side of the unsealed surface so that they are opposite to each other, the positions of the openings on the printed surface side and the unprinted surface side of the exterior box do not overlap. It is a thing.

  A third aspect of the present invention is characterized in that, in the first or second aspect, the width dimension ratio of the left and right flaps has a larger dimension ratio difference than 6: 4.

  This is because when the width-to-width ratio of the left and right flaps exceeds 6: 4 and the difference in size ratio is large, the positions of the openings on the unsealed surface on the printing surface side and the anti-printing surface side overlap (width-to-width ratio is 5: 5 This is because the strength of the outer box can be remarkably improved as compared with the case of (1).

  According to a fourth aspect of the present invention, in order to achieve the above object, in the planographic printing plate package formed by packaging a stack of planographic printing plates in a cardboard outer box, the outer box is opened with left and right flaps. The unsealing surface is formed on both the printing surface side and the non-printing surface side of the laminated bundle, and at least one of the both unsealing surfaces has the same width of the left and right flaps as the width of the exterior box. It is formed in length.

  The lithographic printing plate package according to claim 4 has a configuration of an exterior box different from that of claim 1, and the unsealing surfaces opened by the left and right flaps are on both the printing surface side and the non-printing surface side of the laminated bundle. At the same time, at least one of the two unsealed surfaces is formed such that the left and right flaps have the same width as the width of the outer box. As described above, at least one of the two unsealed surfaces is formed such that the left and right flaps overlap each other by forming the width dimension of the left and right flaps to the same length as the width dimension of the outer box. As a result, even if it is a double-sided exterior box, the strength will not be weakened, so when setting it on the setter with the print side up or setting it on the setter with the anti-print side up Moreover, since it is difficult to bend even when stood and stored, it is possible to suppress bending and wrinkling on the laminated bundle.

  According to a fifth aspect of the present invention, in order to achieve the above object, in a lithographic printing plate package formed by packaging a stack of lithographic printing plates in a cardboard outer box, the outer box is opened with left and right flaps. The opening surface is formed on both the printing surface side and the non-printing surface side of the laminated bundle, and the opening portion of the opening surface on the anti-printing surface side is formed by a plurality of parallel perforations. Features.

  The lithographic printing plate package of claim 5 is a configuration of an exterior box different from that of claim 1 or claim 4, and an opening surface opened by left and right flaps is formed on the printing surface side of the laminated bundle. At the same time, the opening of the opening surface on the side opposite to the printing surface is formed by a plurality of parallel perforations. Thereby, when taking out the laminated bundle from the non-printing surface side, the perforation formed in the opening is torn and the exterior box is opened. In this case, since the opening is formed by a plurality of perforations, 1 It is easier to tear than a perforation of a book. Therefore, both sides can be opened and the strength will not be weakened. Therefore, it can be used when setting on a setter with the print side up or when setting on a setter with the non-print side up. In addition, since it is difficult to bend even when stood and stored, it is possible to suppress bending and wrinkling on the laminated bundle.

  A sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, a strength reinforcing material is provided on at least two opposing side surfaces of the four side surfaces of the exterior box. Thereby, the intensity | strength of an exterior box can be made still stronger.

  A seventh aspect of the present invention provides the laminated bundle of lithographic printing plates according to any one of the first to sixth aspects, wherein the laminated bundle of lithographic printing plates is packaged with a tearable interior material having a light shielding function and a moisture proof function, and the outer packaging is disposed outside the inner packaging. It is characterized by being packaged with.

  When a laminated bundle of planographic printing plates is packaged with an interior material having a light-shielding function and a moisture-proof function, and the outside of the inner package is packaged with the exterior box, the interior material is also opened from both the printing surface side and the non-printing surface side. In the case where the inner packaging cannot be performed, the value of having both the printing surface side and the non-printing surface side of the outer box as the opening surface is reduced by half. In the present invention, since the interior material can be torn, for example, even when a laminated bundle of planographic printing plates is taken out from the outer box with the side opposite to the printing surface facing up, it can be easily taken out.

An eighth aspect of the present invention is the method according to the seventh aspect, wherein the interior material is aluminum obtained by melt-applying low-density polyethylene having a thickness of 10 to 15 μm on kraft paper of 80 to 90 g / m ² and sticking an aluminum foil having a thickness of 4 to 8 μm. It is a kraft paper. By configuring the interior material with such a material and thickness, the interior material can be easily torn.

  A ninth aspect of the present invention is characterized in that, in the eighth aspect, the interior material is obtained by bonding a black polyethylene film of 60 μm or less to the aluminum kraft paper. Thereby, the light-shielding property and moisture-proof property of an interior material can be improved, and also an interior material can be torn easily.

  A tenth aspect of the present invention provides the interior material according to any one of the seventh to ninth aspects, wherein the interior material is disposed on the non-printing surface side of the interior material when the interior material is internally packaged so that an opening is provided on the print surface side. A perforation for tearing is formed.

  Thereby, even when taking out the laminated bundle of the planographic printing plate with the anti-printing surface side up, the interior material can be easily torn and the outer packaging box is opened on both sides, so that the laminated bundle can be taken out easily. In addition, what is necessary is just to open an interior material as usual from an opening part, when carrying out an inner packaging so that an opening part may come to a non-printing surface side.

  An eleventh aspect according to any one of the seventh to tenth aspects, wherein at least one of the printing surface side and the non-printing surface side of the interior material when the laminated bundle of the planographic printing plates is packaged with the interior material is anti-printing. On the surface side, a cardboard having a thickness of 0.3 mm or more is interposed between the laminated bundle and the interior material.

  Thereby, when taking out a stack of lithographic printing plates with the side opposite to the printing surface facing up, there is cardboard even if the interior material is cut with a cutter, so that the lithographic printing plate is not damaged and the lithographic plate of the present invention Since the strength of the printing plate package can be increased, it is possible to further suppress the bending of the laminated bundle of planographic printing plates even when stood and stored.

  As described above, according to the planographic printing plate package of the present invention, the strength may be weak even in a double-sided exterior box on the printing surface side and the non-printing surface side of a laminated bundle of planographic printing plates. It can be used for both set-up on the setter with the print side up, and set on the setter with the anti-print side up, and it is difficult to bend when stored in a stack. It is possible to suppress the bend and crease.

  Hereinafter, preferred embodiments of the planographic printing plate package according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a processing line 100 for a lithographic printing plate.

  On the upstream side (upper right side in FIG. 1) of the processing line 100, a sending machine 102 is provided. A long lithographic printing plate 10 is wound in a coil shape and attached to the sending machine 102, and the lithographic printing plate 10 is unwound from the sending machine 102 and sent to the processing line 100. The fed lithographic printing plate 10 is curled and corrected by the leveler 106. The planographic printing plate 10 is controlled so as to travel in the center by the delivery device 102, but may be displaced in the width direction from the center due to a deviation during traveling. For this reason, the vehicle is regulated to travel at a specified position (center position) by a CPC (center position control) device (not shown). As the CPC device, for example, a camera for detecting the edge position in the width direction of the long lithographic printing plate 10 is provided, and the lithographic printing plate 10 is wound based on the edge position detected by the camera. The center position of the planographic printing plate 10 in the width direction may be configured to run at a constant position. In this way, the planographic printing plate 10 that is regulated so as to travel in the center position is overlapped with the interleaf 14 at the position of the overlapping device 108 and is charged and bonded.

  On the other hand, the slip sheet 14 is mounted on the transmitter 112 in a coiled state, and is unwound from the transmitter 112 and sent out. Then, after a tension for conveyance is applied by a dancer roller or the like, an EPC (edge position control) device (not shown) controls the conveyance position in the width direction to be the center of the line. Thereafter, the slip sheet 14 is trimmed to a predetermined width by the slitter device 114. In that case, it is preferable that the width dimension of the interleaf paper 14 becomes 0.5-6 mm shorter than the width dimension of the planographic printing plate 10, More preferably, it is 0.5-2 mm shorter. In this case, if it exceeds 6 mm, the exposed portion of the planographic printing plate 10 that is not covered with the interleaf paper 14 becomes too large, and the planographic printing plate 10 is likely to be scratched. On the other hand, if the thickness is less than 0.5 mm, the interleaf paper 14 may protrude.

  Further, when slitting the interleaf paper 14, the left and right slit positions of the slitter device 114 are positioned so that the line center is accurately distributed. Accordingly, the slip sheet 14 slit by the slitter device 114 travels in the center of the line and is overlapped with the planographic printing plate 10 traveling in the center of the line. Hereinafter, a web 116 in which a long planographic printing plate 10 and a slip sheet 14 are overlapped is referred to as a web 116.

  The web 116 is transferred to the notch 118, and the notch 118 punches out the ear portion of the web 116. In accordance with this punching position, a trimming upper blade 122 and a trimming lower blade 124 of a slitter device 120 described later are moved in the width direction of the planographic printing plate 10.

  The web 116 with the ears punched out by the notch 118 is transferred to the slitter device 120 and trimmed to a predetermined width by the trimming upper blade 122 and the trimming lower blade 124 of the slitter device 120. At this time, the trimming upper blade 122 and the trimming lower blade 124 move in the width direction of the web 116 according to the punching position, so that the trimming width (width size) can be changed while continuously cutting the web 116. Further, since the slip sheet 14 and the planographic printing plate 10 are overlapped with each other positioned at the center in the width direction, the overlapped web 116 has the ears of the planographic printing plate 10 at 0 from the slip sheet 14. Only protruding from 5 to 6 mm. Therefore, only the protruding ear portion of the planographic printing plate 10 can be cut by the slitter device 120. As a result, in the cut web 116, the edge position in the width direction of the interleaf sheet 14 is arranged slightly inside the edge position in the width direction of the planographic printing plate 10. Accordingly, the planographic printing plate 10 can be widely covered with the slip sheet 14 while preventing the slip sheet 14 from protruding from the planographic printing plate 10. Therefore, it is possible to prevent the slip sheet 14 from protruding as when the planographic printing plate 10 and the slip sheet 14 are simultaneously cut. Further, the slitting device 120 of the lithographic printing plate 10 slits only the lithographic printing plate 10, and separation of the interleaf waste and the lithographic printing plate waste becomes easy.

  The web 116 cut to a predetermined width is cut by the running cutter 128 at the instructed timing after the feed length is detected by the length measuring device 126. As a result, the lithographic printing plate 10A having the set size is manufactured, and the lithographic printing plate 10A having the product size is sorted into an acceptable product and a defective product, and then the accepted product is transferred to the accumulator 134 by the conveyor 132. The

  In the stacking device 134, a predetermined number of lithographic printing plates 10A on which the interleaf sheets 14 are bonded are stacked. As a result, the planographic printing plate 10A and the interleaf paper 14 are alternately laminated to form a laminated bundle 12 of the planographic printing plate 10A. The number of lithographic printing plates 10 constituting one laminated bundle 12 is not particularly limited, but may be, for example, 10 to 100 from the viewpoint of efficiency of transportation and storage. Two stacking devices 134 may be provided and stacked alternately. Thereby, the web 116 can be continuously cut even while the laminated bundle 12 is carried out.

  Next, a description will be given of the process up to the formation of the lithographic printing plate package 32 by wrapping the laminated bundle 12 of the lithographic printing plates 10A that have been processed and laminated as described above.

  As shown in FIG. 2, the laminated bundle 12 is first internally packaged with an interior material 16 using an automatic interior machine (not shown). In this case, in the stacking device 134, cardboard cardboard (hereinafter referred to as “abutting balls 13, 13”) as a protective sheet is disposed in advance on the printing surface A side and the non-printing surface B side of the stack 12. The craft tape is suspended from the upper contact ball 13 to the lower contact ball 13 so that the contact balls 13 and the stacked bundle 12 do not shift, and the contact balls 13 and 13 and the stacked bundle 12 are fixed integrally. Is preferred.

  As shown in FIG. 2, the laminated bundle 12 in which the contact balls 13, 13 are arranged on the upper and lower sides is placed at a substantially central portion of the interior material 16 having a light shielding property and a moisture proof property with the printing surface 12 </ b> A facing up. Then, as shown in FIG. 3, after the interior material 16 is folded so as to wrap the laminated bundle 12, the end of the interior material 16 is fixed by an adhesive tape 18. Thereby, the laminated bundle 20 with an interior is comprised. In this way, the laminated bundle 12 is wrapped with the interior material 16 and fixed with the adhesive tape 18, so that the interior material 16 spreads unintentionally and the laminated bundle 12 does not fall off, and the lithographic printing plate 10A. Is reliably shielded from light and moisture.

As the interior material 16, a material having a light shielding function and a moisture proof function and having a tearable condition can be suitably used. For the interior material 16, for example, aluminum kraft paper in which low density polyethylene having a thickness of 10 to 15 μm is melt-coated on kraft paper of 80 to 90 g / m ² and an aluminum foil having a thickness of 4 to 8 μm is pasted is preferably used. Can do. In addition, a paper having a black light-shielding function and a moisture-proof function enhanced by bonding a black polyethylene film of 60 μm or less to the aluminum kraft paper can be suitably used. Further, when the interior material 16 is wrapped inside so that the opening 21 comes to the printing surface A side of the laminated bundle 12, the interior material 16 is placed on the side opposite to the printing surface B of the interior material 16 as shown in FIG. Those formed with perforations 15 for tearing can also be suitably used.

  The light transmittance of the interior material 16 is usually 57% or less for light with a wavelength of 910 nm or less, but is merely an example, and depending on the type of the lithographic printing plate 10A, the light transmittance is higher than this. In some cases, light exposure of the planographic printing plate 10A can be prevented. The light transmittance condition does not need to satisfy the interior material 16 in a single state. Even if the light transmittance is equal to or higher than the above value, a plurality of interior materials 16 are stacked to form the laminated bundle 12. If the inner packaging is carried out, the light transmittance is substantially equal to or less than a predetermined value with the total number of the interior materials 16, so that light transmission can be prevented and alteration of the photosensitive layer or the heat-sensitive layer can be prevented. As described above, when the interior materials 16 are used in an overlapping manner, the number of the interior materials 16 is not particularly limited, but it is preferable that the interior materials 16 are overlapped with each other from the viewpoint of facilitating the inner packaging work and the unpacking work.

  Further, in general, the interior material 16 often folds a paper-like flat body to make the printing surface A side an open surface or seals the side surface. Therefore, when opening the anti-printing surface B side, it is necessary to tear the interior material 16 from an end surface, or to tear the interior material 16 with a cutter or the like. Therefore, it is preferable to use the interior material 16 having a film thickness of 60 μm or less so that the tear strength of the interior material 16 can be reduced and the interior material 16 can be torn by hand. In addition, if it is not torn by hand, it is necessary not to damage the planographic printing plate 10A even if it is torn with a cutter, and it is opposite to the printing surface A side of the interior material 16 when the laminated bundle 12 is packaged with the interior material 16. It is preferable that a contact ball 13 having a thickness of 0.3 mm or more is interposed between the laminated bundle 12 and the interior material 16 on at least the anti-print surface B side of the print surface B side.

  These aluminum kraft papers cannot be recovered at the time of disposal, and need to be disposed of as landfills or incineration as industrial waste, but if interior materials manufactured with unbleached kraft paper are used, It can be recovered. That is, disposal such as landfilling or incineration is not necessary, and it can be easily discarded.

  Next, the laminated bundle 20 that is already installed is externally packaged by an exterior box 22 using an automatic exterior machine (not shown). In this case, as shown in FIG. 4, it is preferable to arrange thick papers 24, 24 for increasing the strength on the printed surface A side and the anti-printed surface B side of the laminated bundle 20 that has been installed.

  As shown in FIG. 5, the outer packaging box 22 has an unsealing surface 26 on both the printed surface A side (front surface side of the outer packaging box) and the anti-printing surface B side (back surface side of the outer packaging box) of the laminated bundle 20 to be packaged. 28 is formed. Each opening surface 26, 28 is composed of left and right flaps 26A, 26B or 28A, 28B, and the ends of the left and right flaps 28A, 28B of the opening surface 28 on the anti-printing surface B side are hot-melt bonded, The opening 30 where the left and right flaps 28 </ b> A and 28 </ b> B are abutted is fixed with the adhesive tape 18. In addition, the left and right flaps 26A, 26B or 28A, 28B on the respective opening surfaces 26, 28 are formed so that the width dimension is left-right asymmetric, and the left-right asymmetry is opposite to the opening surface 26 on the printing surface A side. The opening surface 28 on the surface B side is formed so as to be opposite to each other, and the position of the opening 30 formed in each of the opening surfaces 26 and 28 (the opening 30 on the opening surface on the printing surface A side is illustrated in FIG. 7) do not overlap each other. That is, when the width dimension of the right side flap 26B (right side in FIG. 5) of the opening surface 26 on the printing surface A side is FR1, and the width dimension of the left side flap 26A (left side in FIG. 5) is FL1, FR1: FL1 The width dimension ratio is, for example, 7: 3. Conversely, when the width dimension of the right side flap 28B of the opening surface 28 on the side opposite to the printing surface B is FR2, and the width dimension of the left side flap 28B is FL2, the width dimension ratio of FR2: FL2 is a ratio of 3: 7. Become. Thus, the width dimension ratio of the left and right flaps 26A, 26B or 28A, 28B is reversed between the unsealing surface 26 on the printing surface A side and the unsealing surface 28 on the opposite printing surface B side. In this case, it is preferable that the width dimension ratio of the left and right flaps 26A, 26B or 28A, 28B has a larger dimension ratio difference than 6: 4. This is because when the width-to-width ratio of the left and right flaps exceeds 6: 4 and the difference in size ratio is large, the positions of the openings on the unsealed surface on the printing surface side and the anti-printing surface side overlap (width-to-width ratio is 5: 5 This is because the strength of the outer box can be remarkably improved as compared with the case of (1).

  As shown in FIG. 6, the laminated bundle 20 that has been installed is stored with the printing surface A facing up in the exterior box 22 in which the left and right flaps 26 </ b> A and 26 </ b> B of the opening surface 26 on the printing surface A side are open. In this state, the left and right flaps 26A, 26B are closed, and the opening 30 on the printing surface A side is fixed with the adhesive tape 18 as shown in FIG. Thereby, the planographic printing plate package 32 is configured. A label 19 describing the product name, size, lot, etc. is affixed to the planographic printing plate package 32. The planographic printing plate package 32 is loaded on a pallet for transportation and shipped.

  Thus, according to the planographic printing plate package 32 of the present invention, the exterior box 22 is opened on both sides of the printing surface A side and the anti-printing surface B side, and the positions of the openings 30 and 30 on both surfaces 26 and 28 are Since they do not overlap with each other, the strength does not decrease even with the double-sided exterior box 22, so when setting on the setter with the printing surface A up or setter with the anti-printing surface B up The lithographic printing plate package 32 can be made difficult to bend even when stood and stored, so that the laminated bundle 12 is not bent and wrinkled or damaged.

  When the lithographic printing plate package 32 is stored one box at a time or is carried in both hands by an operator, the lithographic printing plate packaging body 32 is often turned vertically. There are no inconveniences such as bending when carrying the packaging body 32 with both hands and being difficult to carry, and the planographic printing plate packaging body 32 being bent. Moreover, since the light shielding and moisture proof packaging functions are given to the interior material 16, the exterior box 22 can consolidate the functions in strength and openability, and the specifications can be simplified.

  FIG. 8 shows an example in which a strength reinforcing member 23 is formed by winding paper on two opposing side surfaces of the four side surfaces of the outer box 22 to form a prismatic shape. In this case, by providing the strength reinforcing material 23 on the side surface in the direction orthogonal to the opening 30 among the four side surfaces, when the lithographic printing plate packaging 32 is stood and stored, the bending at the position of the opening 30 is prevented. It is preferable because it is possible.

  FIG. 9 is an aspect different from the outer packaging box 22 of FIG. 5, and the outer packaging box 22 has a printing surface A on which the unsealing surfaces 26, 28 opened by the left and right flaps 26 </ b> A, 26 </ b> B or 28 </ b> A, 28 </ b> B 5 is the same as FIG. 5 except that the opening surface 26 of at least one of the double-sided opening surfaces 26 and 28 (FIG. 9 shows the opening on the printing surface A side). The width dimensions FR1 and FL1 of the left and right flaps 26A and 26B are formed to have the same length as the width dimension W of the exterior box 22. Thereby, the left and right flaps 26 </ b> A and 26 </ b> B serve to reinforce the outer box 22. Accordingly, since the strength does not become weak even in the case of the double-sided exterior box 22, either the case where the printing surface A is set on the setter with the printing surface A up, or the case where the anti-printing surface B is set on the setter is used. In addition, the lithographic printing plate package 32 can be made to be difficult to bend even when stood and stored, so that the laminated bundle 12 is not bent and wrinkled or damaged. Moreover, both sides can be opened.

  FIG. 10 is a mode different from the exterior box 22 of FIG. 5 or 9, and illustrates the side opposite to the printing 20 </ b> B of the exterior box 22. As shown in FIG. 10A, the outer packaging box 22 has an opening surface 26 that is opened by the left and right flaps 26A and 26B on the printing surface A side, and an opening surface 28 on the anti-printing surface B side. The unsealing portion is formed by a plurality of parallel perforations 23, 23 (FIG. 10 shows two perforations). Thereby, when taking out the laminated bundle 20 from the opening surface 28 on the side opposite to the printing surface B, the perforations 23 and 23 formed in the opening 30 are torn and the outer box 22 is opened. In this case, a plurality of openings 30 are provided. Since it is formed by the perforations 23 and 23 of the book, it can be torn as shown in FIG. Therefore, since it can be torn more easily than a conventional perforation, both sides can be easily opened and the strength is not weakened. It is possible to cope with any of the cases where the printing surface 20B is set to the setter with the printing surface 20B facing upward, and the planographic printing plate package 32 can be made difficult to bend even when stood and stored. There is no sticking or damage. Moreover, both sides can be opened.

  Next, the preferable aspect regarding the lithographic printing plate 10A, the slip sheet 14, and the contact ball 13 in this invention is demonstrated.

[Lithographic printing plate]
The planographic printing plate 10A 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.

  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. If it is such a configuration, the specific configuration of the planographic printing plate 10A is not particularly limited. For example, by using the planographic printing plate 10A for the laser printing plate of the heat mode method and the photon method, from the digital data A lithographic printing plate 10A capable of direct plate making can be obtained.

Further, the lithographic printing plate 10A can be a lithographic printing plate corresponding to various plate making methods by selecting various components in the photosensitive layer or the thermosensitive layer. Examples of specific embodiments of the planographic printing plate 10A 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) An embodiment in which the photosensitive layer includes two layers, a layer containing a compound that generates radicals upon irradiation with laser light, an alkali-soluble binder, and a polyfunctional monomer or prepolymer, and an oxygen blocking layer.
(4) A mode 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 a 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 including 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 sulfonic acid or 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) 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 crosslinked structure with itself or other molecules in the layer and an alkali-soluble binder.

  In particular, in the planographic printing plate 10A having a photosensitive layer (or heat-sensitive layer) whose solubility in a developing solution is changed by laser light irradiation, the image forming surface (photosensitive layer or heat-sensitive layer) is easily damaged, and thus the present invention is applied. Then, as will be described later, so-called film peeling can be reliably prevented, which is preferable.

  The wavelength of the laser light here is not particularly limited. For example, (A) a laser having a wavelength range of 350 to 450 nm (specifically, a laser diode having a wavelength of 405 ± 5 nm), (B) a wavelength range of 480 to 540 nm. (Specific examples are an argon laser with a wavelength of 488 nm, a (FD) YAG laser with a wavelength of 532 nm, a solid laser with a wavelength of 532 nm, a (green) He—Ne laser with a wavelength of 532 nm), and (C) with a wavelength range of 630 to 680 nm. Lasers (specific examples are He—Ne lasers with wavelengths of 630 to 670 nm, red semiconductor lasers with wavelengths of 630 to 670 nm), (D) lasers with wavelength ranges of 800 to 830 nm (specific examples are infrared rays with a wavelength of 830 nm (semiconductors)) Laser), (E) laser with a wavelength of 1064 to 1080 nm (specifically The, YAG laser having a wavelength of 1064 nm), and the like. Among these, for example, both of the laser beams in the wavelength regions (B) and (C) can be applied to both the lithographic printing plate having the photosensitive layer or the heat-sensitive layer of the above-described aspect (3) or (4). It is. Further, both of the laser beams in the wavelength ranges of (D) and (E) can be applied to both the lithographic printing plate 10A having the photosensitive layer or the heat-sensitive layer of the above-described aspect (1) or (2). Of course, the relationship between the wavelength range of the laser beam and the photosensitive layer or the heat-sensitive layer is not limited thereto.

  The shape or the like of the planographic printing plate 10A is not particularly limited. For example, the photosensitive layer is formed on one surface 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. Alternatively, a heat-sensitive layer may be applied.

[Interleaf]
The interleaf paper 14 is not limited in its specific configuration as long as the coating film (printing surface) of the lithographic printing plate 10A can be reliably protected. For example, paper using 100% wood pulp or 100% wood pulp is not used. Further, paper using synthetic pulp and paper having a low density polyethylene layer on the surface of these papers 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, basis weight 20-55 g / m ² made from bleached kraft pulp, density 0.7-0.85 g / cm ³ , moisture 4-6%, Beck smoothness 10-800 seconds, pH 4-6 An interleaving paper having an air permeability of 15 to 300 sec can be mentioned, but it is of course not limited thereto. In the present embodiment, the slip sheet 14 is slit on the processing line 100. However, if the planographic printing plate 10A has a large width and a large amount of processing, the slip sheet 14 having a predetermined width may be used. Good.

[Hit ball]
As the contact ball 13, synthetic pulp obtained from natural fibers such as wood pulp and hemp, and linear polymers such as polyolefin, regenerated cellulose, and the like can be used alone or in combination. In particular, it can be manufactured at a low cost by selecting a low-cost material such as wood pulp or natural fiber. More specifically, for example, raw material waste paper is beaten, and the sizing agent is 0.1% of the cardboard weight and the paper strength agent is 0.2% of the cardboard weight in the paper stock diluted to a concentration of 4%. In addition, a density of 0.72 g / cm ³ and a basis weight of 640 g / cm ² obtained by making paper using a paper material in which aluminum sulfate is added until the pH becomes 5.0 can be mentioned. It is not limited. The thickness of the contact ball 13 is generally about 0.8 mm, but can be changed depending on the required application. When it is used as a cutter cutting protection for cutting the interior material 16, it can be handled if it is 0.3 mm or more. Further, as protection of the lithographic printing plate 10A, for example, polyethylene having a thickness of about 60 μm can be laminated in order to impart moisture resistance.

[Example 1]
30 sheets of a lithographic printing plate 10A having a thickness of 0.24 mm, a length of 1030 mm and a width of 800 mm, and the stacking surface 12 is stacked with the printing surface 12A facing up to form a stacked bundle 12. The contact balls 13 and 13 having a thickness of 0.8 mm were disposed on the surface. The position of 100 mm from the end of the vertical side of the laminated bundle 12 was fixed with a craft tape of 25 mm width 100 mm (111-PS made by Kikusui), and the contact balls 13, 13 and the laminated bundle 12 were fixed integrally. . After laminating the laminated bundle 12 with the interior material 16 of aluminum kraft paper using an automatic interior machine, the width dimension ratio of the left and right flaps 26A, 26B or 28A, 28B shown in FIG. It was 7: 3, and the width dimension ratio was placed at the approximate center of the outer packaging box 22 opposite to each other on the printing surface A side and the non-printing surface B side, and the end of the flap was hot-melt bonded to form an adhesive tape. In this way, a lithographic printing plate package 32 was produced.

[Example 2]
A lithographic printing plate package 32 was produced in the same manner as in Example 1 except that the left and right flap width dimension ratio of the outer packaging box of Example 1 was set to 6: 4.

[Example 3]
A lithographic printing plate package 32 was produced in the same manner as in Example 1 except that the outer box 22 shown in FIG. 8 was provided with strength reinforcing material 23 (thickness 3 mm) on two side surfaces in the direction orthogonal to the opening 30.

[Example 4]
9 except that at least one of the opening surfaces on both sides is changed to the exterior box 22 of FIG. 9 in which the width dimensions FR, FL of the left and right flaps are formed to the same length as the width dimension W of the exterior box 22. A lithographic printing plate package 32 was produced in the same manner as in Example 1.

[Example 5]
A lithographic printing plate package 32 was produced in the same manner as in Example 1 except that 3 mm thick cardboard 24 for increasing strength was disposed on the upper and lower surfaces of the laminated bundle 20 that had been installed in Example 1.

[Comparative Example 1]
As shown in FIG. 11, the unsealing surfaces are formed on both sides, and the width dimension ratio of the left and right flaps 26A, 26B or 28A, 28B is 5 for both the unsealing surfaces 26, 28 on the printing surface A side and the non-printing surface B side. : 5, that is, except for a change to the conventional double-sided unsealed outer packaging box in which the opening 30 of the opening surface 26 on the printing surface A side and the opening 30 of the opening surface 28 on the anti-printing surface B side overlap each other Produced a planographic printing plate package 32 in the same manner as in Example 1.

[Comparative Example 2]
A lithographic printing plate package 32 was produced in the same manner as in Example 1 except that a conventional single-sided unsealed outer box in which the unsealed surface 26 having a width dimension ratio 5: 5 of the left and right flaps was formed only on the printing surface A side was used. .

  And about the lithographic printing plate package 32 of Examples 1 to 5 and Comparative Examples 1 and 2, the ease of carrying when the operator carries the lithographic printing plate package 32 with both hands, the standing storage test, and A back surface opening test was performed.

  In the transportability test, the case where the lithographic printing plate package 32 did not bend to such an extent that it was difficult to carry was evaluated as “◯”, the case where the planographic printing plate package was bent to the extent that it was difficult to transport was evaluated as “X”. In the lean storage test, as shown in FIG. 12, the lean angle θ of the planographic printing plate package 32 is 75 degrees with the lower end portion of the planographic printing plate package 32 supported by the support member 25. In this state, the bending dimension L of the most bent portion of the planographic printing plate package 32 was measured with a measure.

  The back side opening test is a test of whether or not the back side can be easily opened when setting the setter with the anti-printing surface B side of the laminated bundle facing up. X, and the allowable range was Δ.

Table 1 shows the results of the transportability test and the standing storage test.
[Table 1]
┌────┬──────┬────────┬──────┐
│ │ Easy to carry test │ Standing storage test │ Backside opening │ ├────┼──────┼────────┼──────┤ │Example 1│ ○ │ 20mm │ ○ │ ├────┼──────┼────────┼──────┤ │Example 2│ △ │ 30mm │ ○ │ ├────┼ ──────┼────────┼──────┤ │Example 3│ ○ │ 15mm │ ○ │ ├────┼──────┼─── ─────┼──────┤ │Example 4│ ○ │ 10mm │ △ │ ├────┼──────┼────────┼──── ──┤ │Example 5│ ○ │ 10mm │ ○ │ ├───┼┼─────┼────────┼──────┤ │Comparative Example 1 │ × │ 100mm │ ○ │ ├────┼──────┼────────┼─────── │Comparison 2│ ○ │ 20mm │ × │ └────┴──────┴────────┴──────┘ As you can see from the results in Table 1, left and right Comparative example using the outer packaging box 22 in which the opening surfaces 26, 28 having the width dimension ratio of the flaps 26A, 26B or 28A, 28B of 5: 5 are formed on both surfaces 26, 28 on the printing surface A side and the non-printing surface B side. No. 1 was easy to open on the back side, but it was a bad result in the transportability test and the standing storage test, and was rejected as an overall evaluation. Comparative Example 2 using a conventional single-sided outer packaging box in which the unsealed surface 26 having a width dimension ratio of the left and right flaps of 5: 5 is formed only on the printing surface A side is the carrying ease test and the leaning storage test. Although it was a good result, it was difficult to open the back side and it was not satisfactory considering the ease of use.

  In contrast, Example 1 of the outer box 22 in which the width dimension ratio of the left and right flaps 26A, 26B or 28A, 28B is 7: 3, and Example 2 of the outer box 22 in which the width dimension ratio is 6: 4 Example 3 reinforced with strength reinforcing material 23, Example 4 in which width dimensions FR1 and FL1 of left and right flap flaps 26A, 26B or 28A and 28B are made the same length as width dimension W of exterior box 22, In Example 5 in which the thick cardboard 24 was disposed, the test was successful in all of the ease of carrying test, the standing storage test, and the back surface opening test. In particular, Examples 1 and 2 in which the positions of the openings 30 and 30 on both sides are not overlapped while being opened on both sides could achieve a great effect with a simple device.

Schematic showing the processing line of planographic printing plate Explanatory drawing explaining the state which wraps a laminated bundle with interior material The perspective view which shows the laminated bundle which has been included Diagram of cardboard for reinforcing strength placed on a bundle of laminated sheets The perspective view explaining an exterior box A figure of a stacked bundle housed in an exterior box Perspective view of a planographic printing plate package obtained by interior and exterior lamination bundles The perspective view of the exterior box of another mode The perspective view which provided the strength reinforcement material in the side which the exterior box opposes The perspective view of the exterior box of another mode A perspective view of a conventional double-sided unsealed outer box in which the width ratio of the left and right flaps is 5: 5 Explanatory drawing explaining the standing storage test of the planographic printing plate package

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Long lithographic printing plate, 10A ... Sheet-like lithographic printing plate, 12 ... Laminated bundle, 13 ... Contact ball, 14 ... Interleaf, 15 ... Perforation of interior material, 16 ... Interior material, 18 ... Adhesive tape , 19 ... label, 20 ... interior laminated bundle, 21 ... opening of interior material, 22 ... exterior box, 24 ... cardboard for increasing strength, 25 ... support member for standing storage test, 26 ... printing surface in outer box Side opening surface, 26A ... Left side flap, 26B ... Right side flap, 28 ... Opening surface on the side opposite to the printing side in the outer box, 28A ... Left side flap, 28B ... Right side flap, 30 ... Opening of outer box, 32 ... Lithographic printing Plate package, 100 ... Processing line, 102 ... Sending machine, 106 ... Leveler, 108 ... Overlapping device, 112 ... Sending machine, 114 ... Slitter device, 116 ... Web, 118 ... Notcher, 120 ... Slitter equipment , 126 ... measuring device, 128 ... running cutter, 132 ... conveyor 134 ... integrated device, the printing surface of the A ... stacked bundle, anti printing surface of B ... sheet stack

Claims (11)

In a lithographic printing plate package formed by packaging a laminated bundle of lithographic printing plates in a cardboard outer box,
The outer packaging box has an opening surface for opening the left and right flaps on both the printing surface side and the non-printing surface side of the laminated bundle, and the opening portion on the printing surface side and the anti-printing surface side. A lithographic printing plate package, characterized in that the lithographic printing plate package is formed at a position where the opening of the side opening surface does not overlap each other.   The width dimensions of the left and right flaps for opening the opening surface on the printing surface side and the opening surface on the opposite printing surface side of the outer box are formed so as to be asymmetrical left and right, and the left-right asymmetry is the opening surface on the printing surface side 2. The lithographic printing plate package according to claim 1, wherein the opening surface on the side opposite to the printing surface is formed so as to be opposite to each other.   The planographic printing plate package according to claim 1 or 2, wherein the width-to-width ratio of the left and right flaps has a larger dimensional difference than 6: 4. In a lithographic printing plate package formed by packaging a laminated bundle of lithographic printing plates in a cardboard outer box,
The outer box has unsealing surfaces that are opened by left and right flaps on both the printing surface side and the non-printing surface side of the stacked bundle, and at least one of the both surfaces is formed by left and right flaps. A lithographic printing plate package, wherein the width dimension is the same as the width dimension of the outer box. In a lithographic printing plate package formed by packaging a laminated bundle of lithographic printing plates in a cardboard outer box,
The outer box has an opening surface opened by left and right flaps formed on the printing surface side of the laminated bundle, and an opening portion of the opening surface on the opposite printing surface side is formed by a plurality of parallel perforations. A lithographic printing plate package characterized in that   The lithographic printing plate package according to any one of claims 1 to 5, wherein a strength reinforcing material is provided on at least two opposing side surfaces of the four side surfaces of the outer box.   The laminated bundle of lithographic printing plates is packaged with a tearable interior material having a light shielding function and a moisture proof function, and the outside of the inner packaging is packaged with the outer box. Any one of the planographic printing plate packages. The interior material is aluminum craft paper in which low-density polyethylene having a thickness of 10 to 15 μm is melt-coated on kraft paper having a thickness of 80 to 90 g / m ² and an aluminum foil having a thickness of 4 to 8 μm is adhered. The lithographic printing plate package according to claim 7.   The lithographic printing plate package according to claim 8, wherein the interior material is obtained by bonding a black polyethylene film of 60 µm or less to the aluminum kraft paper.   A perforation for tearing the interior material is formed on the non-printing surface side of the interior material when the interior material is packaged in such a way that an opening comes to the print surface side. The lithographic printing plate package according to any one of claims 7 to 9.   When the laminated bundle of lithographic printing plates is packaged with the interior material, at least the anti-printing surface side of the interior material between the printed surface side and the anti-printing surface side is between the laminated bundle and the interior material. The lithographic printing plate package according to any one of claims 7 to 10, wherein a thick paper having a thickness of 0.3 mm or more is interposed in the lithographic printing plate package.

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