JP3475157B2 - Printing sheet manufacturing method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a printed sheet, and more particularly to a method for joining large sheets printed with display elements such as patterns and letters to produce a large printed sheet.

[0002]

2. Description of the Related Art Conventionally, as means for applying display elements such as patterns, letters, and pictures to large display surfaces such as advertising towers and signboards,
Methods such as manual drawing were used.

[0003]

However, the conventional methods such as manual drawing have a problem that the cost is high because a lot of labor, labor and time are required. The present invention has been made in view of the above problems. That is, at present, it is possible to relatively easily print display elements such as patterns and letters on a synthetic resin sheet such as a vinyl chloride resin sheet using a printer, and the printing precision can be controlled with high precision by a computer. Against the background that it has become possible to do, a method of manufacturing a printing sheet that can be applied to the display surface of a large signboard or advertising tower, in other words, by joining a plurality of sheets An object of the present invention is to provide a method for producing a printed sheet having an increased size.

Further, according to the present invention, when two sheets are joined, printing can be performed so that display elements such as pattern patterns and characters on each sheet are continuously aligned in a highly accurately aligned state. An object is to provide a sheet manufacturing method.

[0005]

According to the method for producing a printed sheet according to the present invention, one of the two sheets having display elements such as a pattern and characters printed on the front and back sides is the other one at the end of one sheet. After aligning the ends of the side sheets so that the display elements on both sheets overlap,
At the overlapping location, both sheets are simultaneously cut with a single blade to create a cut edge, and after removing the above cut edge while positioning both sheets so that they do not move, there is no gap between the cut edge surfaces of both sheets. Match the condition,
Then, bi across butt portion of the cut end surfaces of both of the sheet
By bonding a transparent tape to the back surface of one sheet, both sheets are bonded together through the tape, and
Both sheets are cut across the abutting point on the cut edge of one sheet.
Before joining the transparent tape to the back of the
By polishing the ink layer at the tape joint
The back side of both sheets is exposed .

In this way, the two sheets are joined together with the cut end faces abutting each other through the tape without a gap. Moreover, the display elements such as the pattern and letters on the surfaces of the sheets on the one side and the other side are continuous without a gap at the joining portion of the two sheets. Therefore, display elements such as a pattern on the surface of a large printed sheet obtained by joining two or more sheets are
It looks as if it is a display element applied to one sheet. This action is more surely exhibited by bringing the cut end surfaces of both sheets into contact with each other so that the cut end surfaces of both sheets are brought into contact with each other without any gap.

[0007] In the present invention, by such joining clear the tape on the back surface of both sheets, the printed sheet with light of a light source installed in the rear surface side when the backlight,
Since the tape does not block the light at the joint between the two sheets,
The joints are not conspicuous from other places, and the display elements such as the pattern of the entire print sheet are evenly backlit.

[0008] In particular, the present invention, using two sheets such patterns patterns or letters on both sides is printed, the back of both sheets across butt portion of the cut edge of the sheet of bi-lateral
Before joining the transparent tape to the surface, the back surface of both sheets is exposed by polishing the ink layer at the joining point with the transparent tape , so that the tape is joined to the exposed portion of the back surface of the sheet. The bonding strength is higher than that in the case where the entire tape is bonded to the ink layer. Here, the degree of polishing the ink layer is not such that the ink layer is completely removed, but the ink layer remains, and the exposed portion of the back surface of the sheet is scattered in the remaining ink layer. It is desirable that it is a degree. By doing so, a relatively large joining force can be secured, and when the printing sheet is backlit by the light of the light source installed on the back side, display elements such as a pattern are also displayed at the joining portion of the two sheets. It will be visible with the same degree of clarity as other areas.

In the present invention, the two sheets may be synthetic resin sheets, and the joining by tape may be joining by heat fusion using a heat fusion type tape. Further, when the tapes are joined across the abutting positions of the cut end faces of both sheets, the heat fusion type tape may be heated in a state in which both sheets are not thermally affected. In this way, the heat-sealing type tape is heated in a state in which both sheets are not thermally affected, and the heated heat-sealing type tape is used to join the cut end surfaces of both sheets across the abutting points. By doing so, it is possible to prevent the display element such as the pattern printed on the sheet from being discolored due to the influence of heat.

[0010]

1 to 6 are explanatory views showing the procedure of a printing sheet manufacturing method according to an embodiment of the present invention.
In this embodiment, a case where vinyl chloride resin sheets are used as the sheets 1 and 2 will be described.

In the first stage of this embodiment, as shown in FIG. 1, one of the two sheets 1 and 2 on the surface of which display elements such as a pattern and characters are printed is an end portion of the sheet 1. Then, the ends of the sheet 2 on the other side are aligned and overlapped so that the display elements of both sheets 1 and 2 are overlapped. For example, as shown in FIG. 7, when the same pattern patterns P1 and P2 of diagonal stripes are printed on the ends of the two sheets 1 and 2, the pattern pattern P1 on the end of the sheet 1 on one side is The patterns P1 and P2 of the two sheets 1 and 2 are positioned so as to overlap each other in accordance with the pattern P2 of the end portion of the sheet 2 on the other side.

After this, as shown by the phantom line in FIG.
At the overlapping point W of the two sheets 1 and 2, both sheets 1 and 2
Are simultaneously cut with one blade C such as a round blade cutter to produce the cut edges 11 and 21 shown in FIG. In FIG. 2, C1 indicates a cut line. Then, with the sheets 1 and 2 on both sides positioned so as not to move, the scrap 1
Remove 1,21. The work of removing the cut edges 11 and 21 is performed as follows, for example. Regarding the cut edge 11 of the sheet 1 on one side, the cut edge 11 can be easily removed by hand. The cut end 21 of the sheet 2 on the other side is removed by opening a gap between the cut end surface 12 of the sheet 1 on the one side and the cut end surface 22 of the sheet 2 on the other side, and pulling out from the gap by hand. You can When removing the cut edges 11 and 21, both sheets 1 and 2 are positioned so as not to be displaced.

Next, as shown in FIG. 4, the cut end surfaces 12 and 22 of both sheets 1 and 2 are butted against each other. In this case, by removing the cut edges 11 and 21 described with reference to FIG. 2, the cut end surfaces 1 of both sheets 1 and 2 are naturally arranged as shown in FIG.
2, 22 may abut each other, or the end of the sheet 1 on one side may be engaged with the end of the sheet 2 on the other side as shown in FIG. In this case, the pressing roller R1 having a flat surface shown in phantom in FIG. 3 is rolled over the engaging portion to push the end portion of the sheet 1 on one side and to cut the cut end surface 12 thereof. As described above, the cut end surface 22 of the sheet 2 on the other side may be butted. You may push in manually without using the pressing roller R1. With both the seats 1 and 2 positioned so that they will not move,
When the cut end surfaces 12 and 22 of are abutted, the cut end surfaces 12 and 22 of both sheets 1 and 2 are abutted with each other without a gap.

Next, as shown in FIG. 6, both sheets 1 and 2 are
By joining the tapes T across the abutting positions of the cut end faces 12 and 22 of the two sheets 1 and 2,
To join through. When the two sheets 1 and 2 joined by using the tape T have the same and aligned ink layers on their back surfaces as well as their front surfaces, the tape T and each In order to increase the bonding strength with the sheets 1 and 2, the back surface of both sheets 1 and 2 is exposed by polishing the bonding portion with the tape with the polishing roller R2 as shown in FIG. It is desirable to join the tape T as shown in 6. The extent of polishing the ink layer is such that the ink layer remains and the exposed portions of the back surface of the sheet are scattered in the remaining ink layer, rather than the extent that the ink layer is completely removed. Is desirable. The reason for this will be described later.

In this embodiment, since the two sheets 1 and 2 are vinyl chloride resin sheets, it is possible to use a heat fusion type tape as the tape T. As the heat-sealing type tape, a tape in which a hot-melt type adhesive layer is held on a base material, a tape formed of only a hot-melt type resin layer, or the like can be used. When using these heat-sealing type tapes, when heating the tape T, it is preferable that the heat effect of heating the tape T by the heating source does not affect both sheets 1 and 2. . This is because when the sheets 1 and 2 are affected by heating, the sheets 1 and 2 are discolored and the prints are discolored.

FIG. 8 exemplifies means for heating the tape T in a state in which the sheets 1 and 2 are not affected by heat.
The tape T shown in the figure is unwound from a tape roll (not shown), passed through a guide roll G, and wound around a tape pressing roller R3 that runs across the abutting points of both sheets 1 and 2. There is. Then, the hot iron 3 as a heating source is pressed against the back surface of the tape T wound around the tape pressing roller R3, and the tape T is heated by the heat of the hot iron 3. The hot iron 3 is separated from the sheets 1 and 2. According to this means, by running the means as shown by arrow A in the figure, it becomes possible to continuously join the tapes T across the abutting points of the two sheets 1 and 2.

However, in order to perform the printing sheet manufacturing method described above, it is useful to use the working device schematically shown in FIG. In the working apparatus shown in the same drawing, a placement section for the sheets 1 and 2 is formed on the upper surface of a long table 5, and a suction area 6 having a large number of air suction holes is formed in the placement section. Therefore, if the two sheets 1 and 2 are placed on the placement section of the table 5 as shown in FIG. 1 and the suction area is sucked, the two sheets 1 and 2 will not move easily. Positioned. In addition to the positioning by suction, it is possible to place a magnet rubber belt on the sheets 1 and 2 and press the sheets 1 and 2 against the metal table 5 by the attracting force of the magnet rubber belt.
Further, the rubber belt 7 is arranged at the central portion in the width direction of the table 5 so that the upper surface thereof is flush with the upper surface of the table 5. As described with reference to FIG. 1, the rubber belt 7 is useful for surely cutting the overlapping portion of the sheets 1 and 2 with the cutter C. A traveling carriage 8 is installed on the table 5 so that it can travel in the longitudinal direction. The traveling carriage 8 has a function of appropriately exchanging and mounting each unit such as a round blade cutting device unit, a pressing roller unit, and a polishing roller unit. So, for example,
When the cutting as shown in FIG. 1 is performed, a round blade cutting device unit can be mounted on the traveling carriage 8 to perform the cutting.
When the pushing is performed as described above, the pushing roller unit can be mounted on the traveling carriage 8 to perform the pushing. When polishing is performed as shown in FIG. 5, the polishing roller unit is mounted on the traveling carriage 8 to perform the polishing. be able to.

The printed sheet produced by the method for producing a printed sheet according to the present invention can be used as a means for applying a display element such as a pattern, a character or a picture to a large display surface of an advertising tower or a signboard. In that case, install a light source on the back side of the printing sheet,
The light from the light source can be used to backlight the print sheet. When using this, tape T
If a transparent tape is used as the tape, the tape T does not block light at the joint between the two sheets 1 and 2, so that the joint does not stand out from other places, and the pattern pattern of the entire print sheet Display elements such as will be backlit all over. Further, when exposing the back surfaces of both sheets 1 and 2 by polishing the ink layers on the back surfaces of the sheets 1 and 2 at the joint portion with the tape T, the extent to which the ink layers are polished is set to the extent of completely Rather than polishing to the extent that it is removed, it is preferable that the ink layer remains and the exposed portions of the back surfaces of the sheets 1 and 2 are scattered in the remaining ink layer. By doing so, a relatively large joining force can be secured, and when the printing sheet is backlit by the light of the light source installed on the back side, a pattern pattern is formed even at the joining portion of the two sheets 1 and 2. The display element of is visible with the same degree of clarity as other parts.

The printed sheet produced by the method for producing a printed sheet according to the present invention can also be used without using the above-mentioned Bakulite method. In other words, the usage is simply to put a printing sheet on the large display surface of the advertising tower or the signboard. In this case, it is not always necessary to use a transparent tape as the tape T, and when the ink layers on the back surfaces of the sheets 1 and 2 are polished at the joining points by the tape T, the ink layer is completely removed and the tape T is removed. It is also possible to increase the bonding strength of the.

[0020]

As described above, the printed sheet produced by the present invention is one in which a small and easily handled sheet is joined to produce a large printed sheet, and the printed sheet produced by the present invention. Has the advantage that there is no gap between the abutting points of the two sheets, and that the display elements such as the pattern are continuously connected at the abutting points as if they were made of one large sheet. is there. In addition, the printing sheet manufactured according to the present invention can be used not only for the usage by the backlight system but also for the usage without the backlight system, so that the usage thereof is wide.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a step of stacking two sheets and a step of cutting an overlapping portion.

FIG. 2 is an explanatory diagram of a stage in which an overlapping portion of two sheets is cut.

FIG. 3 is an explanatory diagram of a pressing step by a pressing roller.

FIG. 4 is an explanatory diagram of a stage in which cut end faces are butted to each other.

FIG. 5 is an explanatory diagram of a polishing step.

FIG. 6 is an explanatory diagram of a stage of joining with a tape.

FIG. 7 is an explanatory diagram of a case where a pattern pattern and the like are also combined.

FIG. 8 is an explanatory view illustrating the means for heating the tape.

FIG. 9 is a schematic plan view of a work device.

[Explanation of symbols]

1, 2 sheets 11,21 Pieces 12,22 Cut end face C cutlery T tape

Continuation of the front page (56) Reference JP-A-10-305950 (JP, A) JP-A-57-160853 (JP, A) JP-A-2-38251 (JP, A) JP-A-7-2398 (JP , A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B65H 21/02

Claims (3)

(57) [Claims] 1. Out of two sheets on which display elements such as a pattern and letters are printed on the front and back sides , the edge of the sheet on one side and the edge of the sheet on the other side are displayed on the both sides. After overlapping the elements so that the elements overlap each other, at the overlapping point, both sheets are simultaneously cut with a single blade to generate a cut edge, and the above cut edge is removed while positioning both sheets so that they do not move. After that, the cut end surfaces of both sheets are butted against each other so that there is no gap , and then a transparent tape is bonded to the back surfaces of both sheets across the butted portions of the cut end surfaces of both sheets. co when joined through the tape both sheets by
In addition, straddling the abutting points on the cut end faces of both sheets
Before joining the transparent tape to the back of the sheet of,
Polishing the ink layer at the joint with transparent tape
A method for manufacturing a printed sheet, characterized in that the back surfaces of both sheets are exposed . 2. The two sheets are synthetic resin sheets,
The method for producing a printed sheet according to claim 1, wherein the joining by the tape is joining by heat fusion using a heat fusion type tape. 3. The method according to claim 2 , wherein when the tapes are joined across the abutting portions of the cut end faces of both sheets, the heat-fusion type tape is heated in a state where heat is not exerted on both sheets. Printing sheet manufacturing method.