JP3284283B2 - Method for preparing spliced web and tape for connecting the same - 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 splicing webs in a web-fed rotary printing press and an adhesive tape for connection used therefor.

[0002]

2. Description of the Related Art Conventionally, in a rotary printing press using a rolled paper wound in a spiral shape, before the rolled paper being printed runs out, it is connected to a new rolled paper so as to eliminate interruption of printing due to running out of paper. However, the stopped paper cannot be directly spliced to the printing paper rotating at high speed, so when the roll paper being printed nears the end, a new roll paper is added in advance. When the paper is rotated by a preparation belt (or a driving motor) and its circumferential speed becomes the same as the speed of the paper being printed, the paper is spliced and cut (flying splicer method). 4 to 4 show the outline.

[0003] Since these roll papers are carried into a printing factory in a state of being wrapped in a winding protection material (paper) called "wamp", preparation for splicing starts by removing the wamp, but almost all of them are performed manually. Work is being done. Then, the starting end of the roll paper is cut into, for example, a V-shape as shown in FIG. 1, a tape for preventing peeling is applied so that the roll paper is not turned over, and further, a paper splicing is performed along the cut edge of the roll paper. Or apply a double-sided adhesive tape and place it in the feeder of the printing press.

In FIG. 2, a rolled paper a is provided for each head of a three-armed arm provided in a paper feed unit of a rotary printing press (a two-armed type having two rolls of roll paper is often used in an offset rotary printing press or the like). , B, and c, the running paper drawn from the roll paper a being fed is sent to the printing unit via rollers. The roll paper b is to be used next time and is at the paper splicing position. The roll paper c is used next to the roll paper b.

Then, as shown in FIG. 3, a roll paper b is prepared at a position close to the traveling paper a running toward the rotary press, and when the remaining roll of the traveling paper a becomes small, the roll paper b Is rotated in the same direction as the traveling paper a (the direction of the arrow f in FIG. 3), and its peripheral speed is made the same as the traveling speed of the traveling paper a. In this state, as shown in FIG.
When the roll paper b is pressed into contact with the roll paper b, the roll paper b is adhered at the adhesive portion of the edge and the two are connected to each other.
Disconnect.

As can be understood from the above description, the roll paper b at the time of splicing rotates in a direction with the edge of the paper leading, so that air is blown from the edge to break the roll, causing a problem. Therefore, in addition to cutting the edge of the paper into a V-shape, which is considered to have relatively less air blowing than making a horizontal straight line, a tape for preventing peeling is attached to the edge of the paper. However, since the function of the peeling prevention tape is the opposite of the operation of bonding the paper splice and may impair the smooth paper splicing, a variety of methods and various forms of the tape for preventing the peeling have been proposed (Jun. 55-53544, JP-A-62-1
No. 36459).

[0007]

The above-mentioned known method of preparing a paper splice uses two types of tapes, ie, a double-sided tape and a tape for preventing peeling, and involves a complicated operation. And it was an obstacle to automation. In addition, the use of a tape for preventing peeling is difficult to put to practical use in which the tape is attached by inefficient work, and the emergence of other effective measures has been awaited.
The present invention provides an appropriate and effective solution to the above problems.

[0008]

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and a method for automating the splicing process and a new connecting / separating tape (hereinafter referred to as a connecting tape) have been proposed. Adhesive tape).

According to the present invention, after a roll paper with a wamp is placed at a predetermined position of a wamp cutting device, the wamp is cut out and removed by a cutter, and usually, the outermost layer of the roll paper or the outermost surface of the roll paper at an arbitrary position on the surface of the roll paper is removed. ~ Cut the third piece into one horizontal character,
Form a straight edge. Then, the adhesive tape for connection of the present invention, which will be described later, is stuck over the front and rear sides of the edge at the formation position of the edge to complete the preparation for the paper splicing.

The constitution of the adhesive tape for connection used in this method comprises a tape-shaped release paper and an adhesive layer formed on the release surface along the longitudinal direction of the tape. The adhesive layer is desirably located at a position slightly closer to the ゝ side edge than the center of the tape and is divided into two by a groove extending in the longitudinal direction of the tape. The tape-shaped release paper is provided with perforation lines extending in the longitudinal direction of the tape. The perforation line is provided for determining the cutting position of the tape at the time of splicing and facilitating the cutting, and is provided at a position coinciding with the groove, and the perforation hole passes through the bottom of the groove. .

Further, a cut line (slit) is formed on the tape-shaped release paper, extending parallel to the perforation line at an appropriate interval and reaching the adhesive layer. The position of the cut line indicates the limit of exposure when peeling off the release paper so that the adhesive surface is exposed after the adhesive tape for connection is attached to a predetermined position of the edge of the roll paper in preparation for splicing. It is.
One area of the release paper sectioned by the perforation line (the area on the side where no cut line is provided) is a part that remains without being peeled even at the time of splicing. A material that is easily peeled off) is not required. If the adhesive does not flow into the perforated line due to the properties of the adhesive and does not affect the breaking strength, the groove is not necessarily provided.

The method for preparing winding of a rotary printing press according to the present invention is performed as follows. First, after removing the wamp, an appropriate length of the surface paper of the roll paper is cut and removed to form an edge. When the edge is formed by a cutting device, a method is employed in which the edge is cut into one horizontal character in order to simplify the mechanism. Next, when the adhesive tape for connection of the present invention is adhered so as to cover the above-mentioned edge of the roll paper, the edge is fixed, and it is possible to prevent the roll paper from fraying.

In the case where the joining operation of the adhesive tape for connection is performed manually, the edge of the roll paper is not limited to one horizontal character but may be cut into a V-shape. In that case, the adhesive tape for connection is V
It is divided into two pieces and adhered in a V-shape along the letter-shaped edge.
Then, before the splicing, the release paper of the adhesive tape for connection stuck to the roll paper is peeled off, the adhesive surface is exposed, and the winding preparation is completed. The roll paper may be mounted on the trifurcated arm or the like before or after the operation of peeling the release paper.

[0014]

As described above, the adhesive tape for connection of the present invention has a simple structure because it is composed only of a release paper and an adhesive layer formed on one surface thereof. The perforation line formed on the release paper is provided so as to match the groove formed in the adhesive layer, so that the adhesive flows into and adheres to the perforation hole to increase the breaking strength of the perforation line. There is nothing. Also, when using the adhesive tape for connection, it is sufficient to cut the edge of the roll paper into one horizontal character, and furthermore, the adhesive surface of the adhesive tape for connection is formed by connecting the adhesive end of the roll paper to the end of the roll paper and the inner peripheral roll paper. By simply sticking over the paper, it is possible to prevent the roll paper from fraying before the splicing, and to apply the adhesive with the adhesive for the splicing covered with release paper. There is no inconvenience such as the roll paper being unraveled during the transfer to the paper section or the occurrence of trouble due to careless handling due to the exposed adhesive for splicing. Thereafter, the preparation of the splicing is completed only by peeling the release paper, so that the handling of the adhesive tape for connection is easy and the preparation work is also simple. Further, as described above, since the content of the work is simple, there is an excellent effect that the preparation for splicing can be automated.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is a perspective view showing a cross section of the connecting adhesive tape of the present invention. The adhesive tape for connection 1 of the present invention comprises:
It consists of a tape-shaped release paper and an adhesive (adhesive) layer formed on one surface (release surface). The adhesive layer is divided into an adhesive layer 3 and an adhesive layer 3 ′ via a groove (a part without an adhesive) 4 extending in the longitudinal direction of the tape. A perforation line 5 extending in the longitudinal direction of the tape is formed in the release paper, and the perforation line reaches the bottom of the groove 4.

The release paper is provided with a slit (cut line) 6 extending in the longitudinal direction of the tape so that the release paper 2 and the release paper 2 'can be easily separated. After the adhesive tape for connection is stuck to the drawn edge of the roll paper, the release paper 2 is peeled off from the adhesive layer to expose the adhesive layer 3, forming an adhesive portion that adheres to the running paper at the time of splicing. I do. Since the adhesive layer 3 ′ does not need to be exposed, the release paper 2 ′ on one side (the release paper covering the adhesive layer 3 ′) separated by the perforation line 5 does not peel off at the time of splicing. It does not necessarily have to be the release surface. The release paper 2 ′ is stuck over the drawn edge of the roll paper and is pressed down on the edge, so that natural fraying of the paper does not occur. Then, at the time of splicing, the adhesive layer 3 is adhered to the running paper and pulled, so that the release paper 2 ′ breaks from the perforation line 5.

The method of using the connecting adhesive tape is as follows. First, the rolled paper with the rolls is cut off. This operation may be performed manually, or may be performed by incision and removal with a resection device. Thereafter, the outermost skin or the second to third sheets of the roll paper are cut into one horizontal character at an arbitrary position on the roll paper surface to form a straight edge 7. FIG. 6 shows the state in which the roll paper is placed at the position where the edge is formed.
As shown in FIG. 5, the connecting adhesive tape 1 is attached so as to cover the edge 7, specifically, at a position where the edge 7 of the roll paper looks into the groove 4. At this time, the edge of the roll paper is fixed thereby, and natural fraying of the roll paper can be prevented. Next, on the spot or after the roll paper is moved to the paper feed unit, the release paper 2 of the adhesive tape for connection attached to the roll paper before the splicing is peeled to expose the adhesive layer 3. The roll paper in this state is rotated on the trifurcated arm, and when the peripheral speed of the roll paper becomes the same as the speed of the traveling paper during printing and the amount of the remaining traveling paper is reduced, the traveling paper is positioned at the splicing position with a brush. When the paper is pressed against the paper, the paper is adhered to the adhesive layer 3, and at the same time, the release paper 2 'is cut from the perforation line 5, and the edge 7 of the roll paper is pulled out by the paper. Is completed.

[0018]

As described above, the adhesive tape for connection of the present invention has a simple structure, is easy to handle, and has a low production cost. By simply straddling over the roll paper, it is possible to prevent the roll paper from fraying before the splicing, and to apply the paper with the adhesive for the splicing covered with release paper. There is no inconvenience that the roll paper is unraveled during the transfer to the paper feeding section or the trouble due to careless handling due to the exposed adhesive for splicing. Further, since the operation is simple, there is an excellent operation and effect that the splicing preparation can be automated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a conventional roll paper splicing preparation state.

FIG. 2 is a front view showing a sheet feeding unit of the rotary printing press.

FIG. 3 is a schematic diagram illustrating the splicing, and shows a preparation state.

FIG. 4 is a schematic diagram illustrating the splicing, and shows a state immediately after the traveling paper and the roll paper are bonded to each other.

FIG. 5 is a perspective view showing a cross section of the adhesive tape for connection of the present invention.

FIG. 6 is a cross-sectional view for explaining a state in which the adhesive tape for connection of the present invention is stuck to roll paper and preparation for splicing is completed.

FIG. 7 is a perspective view showing a roll paper to which the adhesive tape for connection of the present invention is adhered.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Adhesive tape for connection 2, 2 'Release paper 3, 3' Adhesive layer 4 Groove 5 Perforation line 6 Cut line 7 Edge of roll paper a Roll paper (during printing) b Roll paper (in preparation for splicing) C) Roll paper spliced next to roll paper b d Brush e Cutter f Rotation direction of paper roll b during splicing F Rotation direction of arm

Claims (3)

(57) [Claims] 1. A tape for use in preparation for winding of a rotary printing press, comprising: a long release paper having an adhesive layer formed on one side;
A cut formed by punching parallel to the longitudinal direction of the release paper
Connecting line having perforations and perforations
Wearing tape . 2. The adhesive tape for connection according to claim 1, wherein the adhesive layer has a groove extending in the longitudinal direction. 3. A method for preparing a winding of a rotary printing press using a connecting adhesive tape according to claim 2, wherein the connecting adhesive tape is attached in such a positional relationship that an edge of the roll paper looks into the groove.