WO2021033344A1 - Method for manufacturing half-cut finished double-sided tape and device for adhering half-cut finished double-sided tape - Google Patents

Abstract

[Problem] To obtain, on the basis of a commercially available release liner-attached double-sided tape, a double-sided tape for which a half-cut process is completed with a simple procedure without directly touching an adhesive layer with a cutter during the half-cut process.　[Solution] The present invention includes: a step for forming a process protective layer on a release liner-attached double-sided tape 100 by delivering each of the release liner-attached double-sided tape 100 and a release paper tape 130 for processing, and by making the same to abut on each other; a half-cut step for continuously performing half-cut on the release liner-attached double-sided tape 100 in which the process protective layer is formed, and making a state in which a plurality of pieces of the double-sided tape having appropriate sizes are held on a release liner 120; and a step for winding, while peeling the release paper tape 130 for processing, the half-cut finished release liner-attached double-sided tape 100A for which half-cut has been completed. In the half-cut step, peeling becomes easy when a widthwise cut region that is cut in the width direction and a widthwise non-cut region that is not cut are formed.

Description

Manufacturing method of half-cut double-sided tape and half-cut double-sided tape affixing device

The present invention relates to a method for manufacturing a half-cut double-sided tape and a device for attaching a half-cut double-sided tape.
A general double-sided tape is a tape in which a base material and adhesive layers provided on both sides of the base material are integrated in a strip shape without a break, and the surface is supported by a release paper before use. The "half-cut double-sided tape" is a state in which the double-sided tape is appropriately cut, and the surface is supported by the release paper before use.

The general double-sided tape in the prior art has adhesive layers provided on both sides of the base material layer, and is in a state of being rolled in a roll shape with one side supported by the release paper tape before sticking. .. If the release agent is applied to both sides of the release paper, only one release paper may be used, and the release paper may be rolled in order from the inside. In the general market, it is offered in such a rolled state.
Double-sided tape is attached by interposing between the part to be attached and the object to be attached, but when using double-sided tape, the double-sided tape is drawn out and cut for the length required for attachment. After the adhesive layer on the side not covered with the release paper tape is attached to the part to be attached and positioned, the release paper tape is peeled off and the object to be attached is attached to the adhesive layer appearing on the surface side.

Here, when considering the industrial use of double-sided tape, the above-mentioned general double-sided tape is continuously integrated in the length direction, and a cutting step and a peeling step of the release paper tape are required and are mechanically controlled. It's difficult.
Therefore, "half-cut double-sided tape" is known as a special double-sided tape in the prior art (for example, Japanese Patent Application Laid-Open No. 2016-008262). The half-cut double-sided tape is in the form of a strip in which the double-sided tape is appropriately cut, and the surface is supported by the release paper before use. That is, the double-sided tape portion is cut in a large number in the width direction to form a strip shape, and is a double-sided tape held on the release paper tape surface before use. If it is a half-cut double-sided tape, it has been cut into strips of appropriate length from the beginning, so if you stick it directly to the sticking target part or the sticking object while peeling it from the release paper tape, you can stick it as it is and cut it. It is convenient for automation using double-sided tape because it is not necessary. Further, in the case of the half-cut double-sided tape, the release paper tape is peeled off at the same time as the work of attaching the double-sided tape to the place to be attached or the object to be attached, so that the work of collecting the release paper tape is easy.
Due to these characteristics, half-cut double-sided tape is particularly suitable for industrial applications and is expected to become widespread in the future.

FIG. 10 is a diagram briefly showing a process of a method for manufacturing a half-cut double-sided tape disclosed in Japanese Patent Application Laid-Open No. 2016-0087262 in the prior art.
As shown in FIG. 10A, a roll-shaped material called a sticking tape 1100 is fed from the first feed reel 1310 to the first take-up reel 1320. The sticking tape 1100 is composed of an adhesive tape 1120 which is a double-sided tape and a manufacturing tape 1110 which supports one side thereof. Half-cut processing is performed by passing the sticking tape 1100 between a cutter called a die-cut roll 1340 and a support base 1330 provided with a large number of blades in the middle of feeding. By this half-cut process, as shown in FIG. 10B, only the adhesive tape of the adhesive tape 1100 is cut into strips having an appropriate length to form a large number of adhesive tape pieces. That is, the half-cut process of the adhesive tape 1120, which is a double-sided tape, is performed first.

Here, as shown in FIG. 10B, the tape is fed from the second feed reel 1410 called the release tape 1200 to the second take-up reel 1420 in synchronization with the feeding of the sticking tape 1100. The half-cut pasted tape 1100 that has passed through the die-cut roll 1340 and the release tape 1200 come into contact with each other. The adhesive tape piece 1120 separates from the manufacturing tape 1110 and adheres to the release tape 1200 side. That is, as shown in FIG. 10 (c), the half-cut adhesive tape piece 1120 is transferred from the manufacturing tape 1110 side to the release tape 1200 side.
The release tape 1200 is wound around the second take-up reel 1420, and a half-cut double-sided tape is obtained on the second take-up reel 1420.

Japanese Unexamined Patent Publication No. 2016-008262

However, there is a problem to be improved in the method for producing a half-cut double-sided tape disclosed in Japanese Patent Application Laid-Open No. 2016-008262 in the prior art.
The first problem is that the blade of the die-cut roll comes into direct contact with the adhesive during the half-cut process, and a problem may occur in the half-cut process when the adhesive has a strong adhesive force.
In the method for manufacturing a half-cut double-sided tape of JP-A-2016-008262, the adhesive is peeled off from the sticking tape 1100 unwound from the first feed reel 1310 toward the first take-up reel 1320. Since the blade of the die-cut roll 1340 is directly applied to the adhesive surface of the die-cut roll 1340 for half-cut processing, the blade of the die-cut roll 1340 comes into direct contact with the adhesive as shown in FIG. 10 (b). Even if the adhesive has a relatively weak adhesiveness, the adhesive may cling to the blade of the die-cut roll 1340 and harden to make a sharp cut due to repeated use for a long time, or the blade of the die-cut roll 1340 has already become. A part of the adhesive that has adhered may be transferred to the adhesive tape piece 1120 side at the time of half-cutting, which may cause a problem. In particular, when the adhesive tape piece 1120 having a high adhesiveness is handled for industrial use or the like, the possibility that the problem will occur increases.

The second problem is the case where the transfer from the second feed reel 1410 to the release tape 1200 is not successful. In the method for producing a half-cut double-sided tape disclosed in JP-A-2016-008262, finally, as shown in FIG. 10C, the half-cut adhesive tape piece 1120 is peeled off from the manufacturing tape 1110 side. It must be transferred to the tape 1200 side, and this transfer may be affected by the adhesiveness of the adhesive, the accuracy of the half-cut process, the surface condition of the manufacturing tape 1110 and the release tape 1200, and the like. Not all half-cut adhesive tape pieces are transferred, and some adhesive tape pieces may remain on the manufacturing tape 1110 side.

In view of the above problems, the present invention is a simple procedure without having the blade of the die-cut roll come into direct contact with the adhesive during the half-cut process and without having to move the adhesive tape piece such as transfer after the half-cut process. The purpose of the present invention is to provide a manufacturing method capable of obtaining a high-quality half-cut double-sided tape without using special materials or processing machines.

In order to solve the above problems, the present invention has the following configurations. The components described below can be used in any combination as much as possible. Further, the aspects or technical features of the present invention are not limited to those described below, but may be described in the entire specification and drawings, or may be an invention idea that can be grasped by those skilled in the art from those descriptions. It should be understood that it is recognized on the basis.

The method for producing a half-cut double-sided tape according to the present invention comprises a double-sided tape having a base material layer and adhesive layers provided on both sides thereof, and a release liner for coating the adhesive layer on one side of the double-sided tape. Of the double-sided tape with a release liner, the double-sided tape with a release liner and the double-sided tape with a release liner were unwound by using the provided double-sided tape with a release liner and the release paper tape for processing having at least one side having a release surface. "Processing protective layer forming step" in which the peeling surface of the processing release paper tape is brought into contact with the surface on the side where the release liner is not provided to form a processing protection layer on the double-sided tape with the release liner. , The double-sided tape with a release liner on which the processing protection layer is formed is continuously half-cut while leaving the release liner up to the adhesive layer of the processing release paper tape and the double-sided tape with a release liner. , The "half-cut step" in which a large number of double-sided tape pieces of an appropriate length are held on the release liner, and the release in which the half-cut process is performed while peeling the processing release paper tape. This is a method for manufacturing a half-cut double-sided tape, which includes a "half-cut double-sided tape winding step" for winding a double-sided tape with a liner.
The blade used for half-cutting is not limited to, for example, a Thomson blade or a die-cut roll blade. Further, the interval between half cuts is not limited, but may be selected according to the intended use. For example, it may be about several millimeters or several centimeters.

With the above configuration, when the "double-sided tape with a release liner" that is generally available on the market is unwound by going through the "processing protective layer forming step", the adhesive layer is exposed on one side. Since the "release paper tape for processing" is brought into contact with each other and stacked, the back surface of the double-sided tape is covered with a "release liner" which is a support layer, and the processed surface of the double-sided tape is coated with a "release paper tape for processing" which is a protective layer. It will be in the state of being. That is, since the surface of the pressure-sensitive adhesive layer to be half-cut before the half-cut treatment is covered with "processing release paper tape", the blade to be half-cut is less likely to be affected by the pressure-sensitive adhesive layer. Further, in the "half-cut double-sided tape winding process", the "processing release paper tape" is wound while being peeled off, so that the "half-cut double-sided tape with a release liner" is wound.

In the above step, the width of the double-sided tape with a release liner and the width of the release paper tape for processing are substantially the same, and the cut mark of the half cut in the half cut step is the width direction cutting region cut in the width direction. It is preferable that at least a part of the uncut region in the width direction remains uncut, and the uncut region in the width direction is not cut in the length direction and is maintained in a continuous state.
For example, the uncut region in the width direction is formed at at least one of both ends in the width direction, or the uncut region in the width direction is formed near the center in the width direction. possible.
By providing the uncut region in the width direction in this way, in the "half-cut double-sided tape winding process", if the "release paper tape for processing" is peeled off while using the uncut region in the width direction as a clue, the peeling becomes easy. ..

By providing the uncut area in the width direction in this way, the peeling process of the "processing release paper tape" becomes easy, but in this state, it is wound by the "half-cut double-sided tape winding process". Even in the "double-sided tape with a release liner" that has been half-cut, the uncut region in the width direction remains. Therefore, after the half-cut double-sided tape winding process, the half-cut double-sided tape is cut together with the roll at a part of the width-direction cut region of the half-cut double-sided tape, and the roll portion consisting of the width-direction uncut region is removed. A "roll-cutting process" can be added.
In this way, when the "half-cut process" is performed to provide the uncut area in the width direction, the "roll-cut process" is provided at the end to obtain the uncut area in the width direction that is continuous in the length direction. The half-cut double-sided tape that can be removed can be obtained as strips that are completely cut in the width direction.
The shape of the blade in the half-cut process in the "half-cut process" is not limited. For example, there may be various types such as a straight half-cut mark perpendicular to the width direction, an angled half-cut mark, and a curved line.

Next, in the half-cut double-sided tape affixing device according to the present invention, as described above, the double-sided tape in which the base material layer and the adhesive layers provided on both sides thereof are half-cut into a large number of small pieces. A half-cut double-sided tape affixing device that affixes a half-cut double-sided tape with a release liner that covers one side of the tape to the target location, and rolls the half-cut double-sided tape with a release liner. A roll body mounting portion that rotatably supports, a rotary sticking rolling compaction portion through which the half-cut double-sided tape with a release liner drawn out from the roll body mounting portion passes, and a peeling portion in which the release liner is collected. A liner collecting unit is provided, the rotary sticking compaction unit is a rotating body, a support mechanism for supporting the rotation axis of the rotating body, a steering motion mechanism in which the support mechanism changes an angle in a horizontal plane, and the support mechanism is up and down. It is a half-cut double-sided tape affixing device characterized by having a suspension motion mechanism that swings around.
For example, the rotating body may be a single rotating body, or a pair of left and right rotating bodies may be used.
With the above configuration, in the prior art, the rotary pasting rolling compaction part, which is a fixed roller although it can rotate, is a steering motion in which the support mechanism supporting the rotating shaft of the rotating body changes the angle in the horizontal plane. By providing a mechanism and a suspension motion mechanism that swings up and down, the locus drawn by the rotary pasting rolling compactor can draw a curve in the horizontal plane and a curve in the up and down direction, which is a so-called three-dimensional locus. If it is a pair of left and right rotating bodies, it can draw a trajectory like a car. In the three-dimensional locus of the rotary sticking rolling compaction portion, a small piece of half-cut double-sided tape can be transferred and stuck on the three-dimensional locus of the sticking object.

By using the method for producing a half-cut double-sided tape of the present invention, a half-cut double-sided tape with a release liner, which is generally available on the market, can be used by going through a "processing protective layer forming step" according to the above configuration. The die-cut roll blade can be processed without directly touching the adhesive during the cutting process, and the blade for half-cutting is less likely to be affected by the adhesive layer.
Further, the half-cut double-sided tape piece can be formed on the original release liner, and it is not necessary to move the double-sided tape piece such as transfer.
The method for producing a half-cut double-sided tape of the present invention can obtain a high-quality half-cut double-sided tape in a simple process without using a special material or a processing machine.
According to the half-cut double-sided tape sticking device of the present invention, the locus drawn by the rotary sticking compaction portion can draw a curve in the horizontal plane and a curve in the vertical direction, which is a so-called three-dimensional locus. In the three-dimensional locus of the rotary sticking rolling compaction portion, a small piece of half-cut double-sided tape can be transferred and stuck on the three-dimensional locus of the sticking object.

It is a figure which shows the process from "processing protection layer forming process" to "half-cut double-sided tape winding process" among the process of manufacturing method 100 of a half-cut double-sided tape of this invention. It is a figure explaining the object cut by the half-cut process and the object left uncut in an easy-to-understand manner. It is a figure which showed some example of the cut trace of a half-cut process. It is the figure which showed the peeling of the release paper tape 130 for processing in the half-cut double-sided tape winding process simply. It is a figure which briefly explained "roll-cut process" among the process of manufacturing method 100 of the half-cut double-sided tape of this invention. It is a figure which shows the state of using the roll body 100B of the half-cut double-sided tape 100A with a release liner obtained by the manufacturing method of the half-cut double-sided tape of this invention. It is a figure which shows the half-cut double-sided tape 100A attached to the attachment target part. It is a figure which showed only a part of the sticking apparatus 300 of the roll body 100B of the half-cut double-sided tape 100A with a release liner in the vertical cross section and the cross section very simply. It is a figure which shows the state that the curve and the vertical movement can be drawn in the sticking mark of the half-cut double-sided tape A. It is a figure which showed the process of the manufacturing method of the half-cut double-sided tape disclosed in Japanese Patent Application Laid-Open No. 2016-008262 in the prior art simply.

Hereinafter, a method for manufacturing a half-cut double-sided tape according to the present invention will be described with reference to the drawings. However, it goes without saying that the scope of the present invention is not limited to those shown in the following examples.
As Example 1, a method for manufacturing a half-cut double-sided tape having four steps of "processing protective layer forming step", "half-cut step", "half-cut double-sided tape winding step", and "roll-cut step". explain.

A method for manufacturing a half-cut double-sided tape according to Example 1 of the present invention will be described.
FIG. 1 shows the flow of the manufacturing process of the half-cut double-sided tape manufacturing method 100 according to the first embodiment from the “processing protective layer forming step” to the “half-cut step” and the “half-cut double-sided tape winding step”. It is a figure which shows the process of. Although not shown in FIG. 1, there is a "roll cutting step" after this.

First, the "processing protective layer forming step" will be described.
As the material used in the present invention, the double-sided tape 100 with a release liner is the main material. The double-sided tape 100 with a release liner does not have to be special, and may be available on the general market as a so-called double-sided tape material with a release liner. As shown in FIG. 2, the double-sided tape 100 with a release liner is formed by stacking a double-sided tape 110 having a base material layer 111 and adhesive layers 112 and 113 provided on both sides thereof and a release liner 120. It became. The double-sided tape 100 with a release liner having such a structure is common and is also available on the market, and is special in the selection of the base material layer 111, the selection of the adhesive layers 112 and 113, and the like. However, the structure is general. In this example, the roll-shaped double-sided tape 100 with a release liner is attached to the feed reel 210 and is fed from the feed reel 210 to the take-up reel 220.

In the "processing protective layer forming step", the double-sided tape 100 with a release liner is covered with a processing release paper tape 130 having at least one surface as a release surface. The width of the release paper tape 130 for processing may be substantially the same as the width of the double-sided tape 100 with a release liner. The release paper tape 130 for processing does not have an adhesive layer or the like, and is coated on the surface (upper adhesive layer 112 in FIG. 2) of the double-sided tape 100 with a release liner on which the release liner 120 is not provided. The pressure-sensitive adhesive layer 112 is temporarily coated, but since it is peeled off and recovered again in the "half-cut double-sided tape winding step", at least the covering surface is coated with a release agent so that it can be easily peeled off. Is preferable. In this example, a roll-shaped processing release paper tape 130 is attached to the feed reel 230 and is fed from the feed reel 230 to the take-up reel 240.

First, as shown in FIG. 1, in the "processing protective layer forming step", the double-sided tape 100 with a release liner and the release paper tape 120 for processing are fed out from the feed reel 210 and the feed reel 230, respectively.
As shown in FIG. 1, the unwound double-sided tape 100 with a release liner and the release paper tape 130 for processing are the surfaces of the double-sided tape 100 with a release liner on the side where the release liner 120 is not provided (FIGS. 1 and 2). Then, the peeling surface of the processing release paper tape 130 is brought into contact with the upper surface) to form a processing protection layer on the double-sided tape 100 with a release liner.

When the double-sided tape 100 with a release liner, which is generally available on the market, is unwound, the adhesive layer is exposed on one side. By going through this "processing protective layer forming step", the release paper tape 130 for processing can be obtained. One side of the double-sided tape 110 has a release liner 120 that serves as a support layer, and the other side of the double-sided tape 110 is covered with a release paper tape 130 that serves as a protective layer. .. In this state, it is sent to the "half-cut process".
In the "half-cut step", since the surface of the pressure-sensitive adhesive layer 112 to be half-cut is covered with the processing release paper tape 130, the blade to be half-cut is less likely to be affected by the pressure-sensitive adhesive layer.

The "half-cut process" is a step of performing a half-cut process on the double-sided tape 100 with a release liner coated with the processing release paper tape 130 which is a processing protection layer. As shown in FIGS. 1 and 2, the half-cut processing machine 250 performs the half-cut processing at predetermined intervals.
The half-cut processing machine 250 that performs half-cut does not have to be a special one, and may be a half-cut processing machine available on the market. As the half-cut processing machine, a Thomson-type half-cut processing machine using a Thomson blade, a die-cut type half-cut processing machine using a die-cut roll blade, or the like may be used. Here, for example, a Thomson type half-cut processing machine using a Thomson blade is used.

FIG. 2 is a diagram in which an object cut by the half-cut process and an object left uncut are explained in an easy-to-understand vertical cross section. As shown in FIG. 2, the half-cut process here cuts the release paper tape 130 for processing, the pressure-sensitive adhesive layer 112 of the double-sided tape 110, the base material 111, and the pressure-sensitive adhesive layer 112, and the release liner 120 underneath is cut. It is a half-cut process that leaves without cutting. The interval in the length direction of the half cut is not limited, but may be selected according to the application. For example, it may be about 1 mm, about several millimeters, or about several centimeters.

By continuously performing this half-cut process, as a result of the "half-cut process", the processing release paper tape 130 on the release liner 120, the adhesive layer 112 of the double-sided tape 110, the base material 111, and the adhesive layer 112 It is in a state where a large number of double-sided tape pieces of an appropriate length are held. That is, when the "processing release paper tape 130" and the "double-sided tape 100 with release liner" are stacked in layers and pass through the half-cut processing machine 250, the "half-cut processing release paper tape 130A" and "half" The double-sided tape 100A with a peeling liner that has been cut is processed into a layered state.

Here, the cut marks of the half-cut process will be described.
FIG. 3 is a diagram showing some examples of cut marks in the half-cut process.
As shown in FIG. 3, there may be various cut marks themselves in the half-cut process, but in each of these examples, the width direction cutting region 101 cut in the width direction and at least a part thereof are cut. The uncut region 102 in the width direction that remains without being formed is formed. The uncut region 102 in the width direction is not cut in the length direction and is maintained in a continuous state.

The example of FIG. 3A is an example in which the width direction uncut region 102 is formed at both ends in the width direction, and the width direction cutting region 101 is provided on the center side. In the example of FIG. 3A, the cut mark of the width direction cutting region 101 is a straight line perpendicular to the width direction. In the case of the cut mark of FIG. 3 (a), as shown in FIG. 7 (a) described later, each of the attached double-sided tape pieces becomes a strip shape.

The example of FIG. 3 (b) is an example in which the uncut region 102 in the width direction is formed at both ends in the width direction and the cut region 101 in the width direction is provided on the center side, but the example of FIG. 3 (b). The cut mark of the width direction cutting region 101 is angled in the width direction. In the case of the cut mark of FIG. 3 (b), as shown in FIG. 7 (b) described later, each attached double-sided tape piece has a V shape.

The example of FIG. 3 (c) is an example in which the width direction uncut region 102 is formed at both ends in the width direction and the width direction cut region 101 is provided on the center side. The cut mark of the width direction cutting region 101 is a curve. In the case of the cut mark of FIG. 3 (c), as shown in FIG. 7 (c) described later, each attached double-sided tape piece becomes a curved line.

In the example of FIG. 3D, the width direction cut area 101 and the width direction uncut area 102 are alternately continuous in the width direction. In the example of FIG. 3D, the cut mark of the width direction cutting area 101 is a continuous polka dot pattern of polka dots, and the width direction cutting area 101 for one row is the width direction uncut area for one row. This is an example of alternating 6 rows in the width direction with 102 in between. In the case of the cut mark of FIG. 3 (d), as shown in FIG. 7 (d) described later, each of the attached double-sided tape pieces has a polka dot pattern. For example, if the shape of the cutting edge of the Thomson blade is one that is hollowed out in a circumferential shape like a punch hole and is arranged in the width direction of six rows, a cut mark as shown in FIG. 3D can be obtained.

In the example of FIG. 3 (e), the uncut region 102 in the width direction is formed in the center in the width direction, and the cut region 101 in the width direction is provided toward the end portion. In the example of FIG. 3E, the cut mark of the width direction cutting region 101 is a straight line perpendicular to the width direction. In the case of the cut mark of FIG. 3 (e), as in FIG. 3 (a), as shown in FIG. 7 (a) described later, each attached double-sided tape piece becomes a strip shape.
As described above, the shape of each double-sided tape piece is not particularly limited.

By providing the uncut area 102 in the width direction, in the "half-cut double-sided tape winding process", the "half-cut processing release paper tape 130A" is "half-cut with a release liner" while using the uncut area 102 in the width direction as a clue. If it is peeled off from the finished double-sided tape 100A, the peeling will be easy.

Next, the process proceeds to the "half-cut double-sided tape winding process".
In the "half-cut double-sided tape winding process", the half-cut processed release paper tape 130A is peeled off, and the half-cut processed double-sided tape 100A with a release liner is wound. It is a process.
As shown in FIG. 1, as a "half-cut double-sided tape winding process", first, half-cut processing is performed from the half-cut processed double-sided tape 100A with a release liner, which was covered with the half-cut processed release paper tape 130A. The release paper tape 130A for processing is peeled off and separated into a double-sided tape 100A with a release liner that has been half-cut and a release paper tape 130A that has been half-cut.

FIG. 4 is a diagram showing simply peeling of the half-cut processed release paper tape 130A in the half-cut double-sided tape winding step. FIG. 4A shows a vertical cross-sectional view at a position where the uncut region 102 in the width direction is provided, and the half-cut processed release paper tape 130A is continuous in the length direction. Therefore, when the half-cut processed release paper tape 130A is peeled off, the peeling tends to proceed one after another in the length direction, and as shown in FIG. 1, the half-cut processed double-sided tape 100A with a release liner and the half-cut are completed. It is separated into a release paper tape 130A for processing. FIG. 4B shows a vertical cross-sectional view at a position where the width direction cutting region 101 is provided, and the half-cut processed release paper tape 130A is cut by half-cut in the length direction. When the half-cut processed release paper tape 130A is peeled off, it is cut in the length direction, but it is peeled off one after another following the peeling of the half-cut processed release paper tape 130A in the uncut region 102 in the width direction. As a result, as shown in FIG. 1, the tape is separated into a half-cut processed double-sided tape with a release liner 100A and a half-cut processed release paper tape 130A.
In the conventional technique of Japanese Patent Application Laid-Open No. 2016-008682, it is necessary to transfer and move the half-cut double-sided tape piece to the other, but the method for producing the half-cut double-sided tape of the present invention can be used. For example, it is only necessary to peel off the half-cut processed release paper tape 130A that was temporarily covered for the half-cut processing process, and there is no need for the difficult work of transferring the half-cut processed double-sided tape piece to the other. It has become.

After peeling the half-cut processed release paper tape 130A, as shown in FIG. 1, the half-cut double-sided tape 100A with a release liner in the half-cut processed state is wound by the take-up reel 220. On the other hand, the half-cut processed release paper tape 130A is wound by the take-up reel 240, but the half-cut processed release paper tape 130A is no longer needed and may be discarded.

Here, even in the double-sided tape 100A with a half-cut processed release liner that has been wound by the take-up reel 220 to form a roll, a portion corresponding to the uncut region 102 in the width direction remains in this state. It has become. Therefore, it is sent to the next stage "roll cutting process".

In the "roll-cutting step", after the half-cut double-sided tape winding step, the remaining portion of the half-cut double-sided tape 100A with a release liner that has become a roll and corresponds to the uncut region 102 in the width direction is removed. It is a process to do. In this roll cutting step, both may be separated near the boundary between the portion corresponding to the width direction cutting region 101 and the portion corresponding to the width direction uncut region 102.
Here, the cutting method is not limited, and various methods can be used.
For example, a roll cutter can be used to cut the rolled body as it is.
That is, in the half-cut double-sided tape 100A with a release liner, the roll is cut at a part of the width direction cut area 101 (near the boundary with the width direction uncut area 102), and the roll corresponding to the width direction uncut area 102. The part is removed.
The "roll cutting process" can easily cut a desired portion with a roll cutter processing machine 260, and no special machine is required.
FIG. 5 is a diagram briefly explaining the “roll-cutting step” in the steps of the half-cut double-sided tape manufacturing method 100 of the present invention. Here, an example of roll-cutting a half-cut double-sided tape 100A with a release liner having a cut mark shown in FIG. 3A is shown. As shown in FIG. 5, in the half-cut double-sided tape 100A with a release liner wound in a roll shape, a width direction cutting region 101 and a width direction uncut region 102 are arranged in the width direction of the tape. As shown in 5, cutting along the cut portion near the end of the width direction cutting region 101 (the portion slightly extending to the width direction cutting region 101 side near the boundary between the width direction cutting region 101 and the width direction uncut region 102). As a result, as shown in FIG. 5, a roll body 100B of the half-cut double-sided tape 100A with a release liner in which all the width directions of the tape are in the width direction cutting region 101 can be obtained. The roll including the uncut region 102 in the width direction is unnecessary and may be discarded.

Further, for example, there is a method of cutting using a slitter. The slitter processing machine is not a special device but is often used for general purposes. In the flow of pulling out the half-cut double-sided tape 100A with a release liner, which is a roll body attached to the feed reel, sending it out in a strip shape, passing it through the cutter part, winding it on the receiving reel, and returning it to the roll shape again. It is a method of cutting with. For example, if one cutter is provided in the center of the width direction of the tape, the tape can be divided into two in the width direction and wound as two rolls in which the tape width is halved, and the tape can be processed into two parts. ..
In this way, when the "half-cut process" is performed to provide the uncut area in the width direction, the "roll-cut process" is provided at the end to obtain the uncut area in the width direction that is continuous in the length direction. The half-cut double-sided tape 100A with a release liner can be removed, and a strip piece completely cut in the width direction can be obtained.

Next, the use of the half-cut double-sided tape 100A with a release liner obtained by the method for producing the half-cut double-sided tape of the present invention will be described.
FIG. 6 is a diagram showing a state in which a half-cut double-sided tape 100A with a release liner obtained by the method for producing a half-cut double-sided tape of the present invention is used for a portion to be attached.
FIG. 6 is a side view showing the affixing device 300 for affixing the half-cut double-sided tape 100A with a roll-shaped release liner.
In the example shown in FIG. 6, the sticking device 300 includes a roll body mounting portion 310 that rotatably supports the half-cut double-sided tape 100A with a roll-shaped release liner, and a half-cut double-sided tape 100A with a pay-off release liner. It is provided with a rotary sticking rolling compaction unit 320 that passes through and a release liner collection unit 330 that collects the release liner 120. Other device configurations are also possible.
As shown in FIG. 6, the half-cut double-sided tape 100A with a release liner is rolled and mounted on the roll body mounting portion 310 or the like of the sticking device 300 so as to be able to be fed out. When sticking is used, the adhesive layer 112 The half-cut double-sided tape 100A is affixed by pressing the exposed surface against the affixed portion and rolling the rotary affixing rolling compaction portion 330. If the surface of the portion to be attached has a physical property that strongly adheres to the adhesive layer 112, the half-cut double-sided tape 100A is attached and at the same time peeled off from the release liner 120. The release liner 120 is collected by the release liner collection unit 320 and the like.

Here, the half-cut double-sided tape 100A itself is an independent half-cut double-sided tape piece, and is in an independent state on the surface of the portion to be attached. Here, if the half-cut double-sided tape 100A is attached to the attachment target portion by a desired length, and if the attachment device 300 is pulled up as it is, each of the attached half-cut double-sided tapes in an independent state is attached. The tape piece remains as it is on the surface of the part to be attached.

FIG. 7 is a diagram showing a state of the half-cut double-sided tape 100A attached to the attachment target portion.
FIG. 7A shows a state in which the half-cut double-sided tape 100A, which is half-cut in the strip shape of FIG. 3A or FIG. 3E, is attached. Each double-sided tape piece is in the shape of a strip, and each is independent.

FIG. 7 (b) shows a state in which the half-cut double-sided tape 100A of FIG. 3 (b) is attached. Each piece of double-sided tape is angled, and each is independent.

FIG. 7 (c) shows a state in which the half-cut double-sided tape 100A of FIG. 3 (c) is attached. Each double-sided tape piece is curved, and each is independent.

FIG. 7 (d) shows the state in which the half-cut double-sided tape 100A with the half-cut of FIG. 3 (d) is attached. Each double-sided tape piece has a polka dot pattern, and each is independent.

Next, a device for drawing a curve in the sticking mark of the half-cut double-sided tape A manufactured by the method for manufacturing the half-cut double-sided tape of the present invention will be described.
In the half-cut double-sided tape with a release liner manufactured by the method for producing a half-cut double-sided tape of the present invention, each half-cut double-sided tape piece can be attached to the attachment target portion independently, so that the release liner 120 It is possible to peel off and attach it so as to draw a curve as a whole when peeling from.

FIG. 8 is a diagram showing a part of an improved sticking device 400 of the half-cut double-sided tape 100A with a release liner in a vertical cross section and a cross section very simply.
In the example shown in FIG. 8A, the improved sticking device 400 includes a roll body mounting portion 410 that rotatably supports the half-cut double-sided tape 100A with a roll-shaped release liner, and a drawn half-cut with a release liner. It is provided with a rotary sticking compaction section 420 through which the double-sided tape 100A passes, and a release liner recovery section 430 through which the release liner 120 is collected. Other device configurations are also possible.

Here, as shown in FIG. 8B, the rotary pasting compaction portion 420 includes a rotating body, a support mechanism that supports the rotation axis of the rotating body, and a steering motion mechanism in which the support mechanism changes the angle in a horizontal plane. , It is preferable that the support mechanism is provided with a suspension motion mechanism that swings up and down. The steering motion mechanism may be any mechanism as long as the support mechanism that supports the rotation axis can be controlled to change the angle in the horizontal plane, but a mechanism that actively changes the angle by external support may also be used, and an improved type. The angle may change subordinately according to the traveling direction of the affixing device 400. Further, the suspension motion mechanism may be a support mechanism incorporating an elastic body such as a spring in the vertical direction.
The rotating body of the rotary sticking rolling compaction unit 420 may be a single rotating body or two rotating bodies in a pair on the left and right.
In this way, the "steering motion" in which the rotary pasting compaction portion 420 changes the angle in the horizontal plane as shown in FIG. 8 (b) and the so-called "suspension motion" in which the rotary pasting compaction portion 420 swings up and down as shown in FIG. 8 (c). If the structure is equipped with "", so-called curves and vertical movements are possible between the rotary pasting compaction part 420 and the surface of the pasting target location, and both sides have been half-cut, just like the tire marks that the vehicle advances. It is possible to draw a curve in the sticking mark of the tape A, or to follow even if the sticking target portion is an uneven curved surface.

FIG. 9 is a diagram showing how curves and vertical movements can be drawn in the pasted traces of the half-cut double-sided tape A. If a curve can be drawn on the double-sided tape in this way, various attachments can be made in manufacturing, and the usage of the double-sided tape is expanded. In addition, if it becomes easier to follow the vertical movement, it will be possible to apply it to objects to be attached with various shapes, and the usage of double-sided tape will be expanded.
In addition, when the half-cut double-sided tape is attached to the object by using the improved adhesive 400 of the half-cut double-sided tape 100A with a release liner of the present invention, the object to be attached is fixed and the improved adhesive 400 is attached. It is also possible to feed out the half-cut double-sided tape and attach it to the object while moving it relatively, and also to attach the improved affixing device 400 without moving it to the object to be attached. It is also possible to receive and affix the half-cut double-sided tape unwound from the improved affixing device 400 while relatively moving the side. In this case, it is also possible to assemble as an automatic sticking device provided with a feeder mechanism for feeding out the sticking object, a pre-sticking transport mechanism, an improved sticking device 400, a post-sticking transport mechanism, and the like.
Further, the sticking surface of the sticking object may be a flat sheet or a film, or may be a three-dimensional object or a film in which a three-dimensional object is wrapped.

Although preferable examples of the configuration example of the method for producing the half-cut double-sided tape of the present invention have been illustrated and described above, it is understood that various changes can be made without departing from the technical scope of the present invention. Will be done.

The method for producing a half-cut double-sided tape of the present invention can be widely applied as a method for producing a half-cut double-sided tape regardless of the type of adhesive layer, the width of the tape, the diameter of the roll, and the like.

100 Double-sided tape with peeling liner 100A Double-sided tape with peeling liner 100B roll body 101 Width cut area 102 Width uncut area 110 Double-sided tape 111 Base material layer 112 Adhesive layer 113 Adhesive layer 120 Release liner 130 Processing Double-sided tape 210 Feed reel 220 Take-up reel 230 Feed reel 240 Take-up reel 300 Sticking tool 310 Holding part 320 Rotating tip 321 Right-handing tip 322 Left-handing tip 330 Collecting part

Claims (10)

A double-sided tape having a base material layer and adhesive layers provided on both sides thereof, a double-sided tape with a release liner provided with a release liner covering the adhesive layer on one side of the double-sided tape, and a double-sided tape having at least one side of the release surface. The double-sided tape with a release liner and the release paper tape for processing are respectively fed out using the release paper tape for processing, and the surface of the double-sided tape with a release liner that has been fed out is not provided with the release liner. A process of forming a processing protective layer by bringing the peeling surfaces of the processing release paper tape into contact with each other to form a processing protection layer on the double-sided tape with a release liner.
The double-sided tape with a release liner on which the processing protection layer was formed was continuously half-cut while leaving the release liner up to the adhesive layer of the release paper tape for processing and the double-sided tape with a release liner. A half-cut step in which a large number of double-sided tape pieces of an appropriate length are held on the release liner, and
A method for producing a half-cut double-sided tape, which comprises a half-cut double-sided tape winding step of winding the half-cut double-sided tape with a release liner while peeling the processing release paper tape. The width of the double-sided tape with a release liner and the width of the release paper tape for processing are substantially the same.
The cut mark of the half cut in the half cut step forms a cut region in the width direction cut in the width direction and an uncut region in the width direction in which at least a part remains uncut, and the uncut region in the width direction is formed. The method for producing a half-cut double-sided tape according to claim 1, wherein the half-cut double-sided tape is maintained in a continuous state without being cut in the length direction. The method for manufacturing a half-cut double-sided tape according to claim 2, wherein the uncut region in the width direction is formed at at least one of both ends in the width direction. The method for producing a half-cut double-sided tape according to claim 2 or 3, wherein the uncut region in the width direction is formed near the center in the width direction. After the half-cut double-sided tape winding step, the half-cut double-sided tape is cut together with the roll at a part of the widthwise cutting region of the half-cut double-sided tape that has been wound into a roll. The method for producing a half-cut double-sided tape according to any one of claims 2 to 4, further comprising a roll-cut step for removing the roll portion including the uncut region in the width direction. The method for manufacturing a half-cut double-sided tape according to any one of claims 1 to 5, wherein the cut mark of the half-cut is a straight line perpendicular to the width direction. The method for manufacturing a half-cut double-sided tape according to any one of claims 1 to 5, wherein the cut mark of the half-cut is angled in the width direction. The method for manufacturing a half-cut double-sided tape according to any one of claims 1 to 5, wherein the cut mark of the half-cut is curved. A double-sided tape in which the base material layer and the adhesive layers provided on both sides thereof are half-cut into a large number of small pieces and a half-cut double-sided tape with a release liner having a release liner covering one side thereof are attached. It is a half-cut double-sided tape affixing device that affixes to the target location.
A roll body mounting portion that rotatably supports the roll-shaped half-cut double-sided tape with a release liner, and a rotary sticking roll through which the half-cut double-sided tape with a release liner drawn out from the roll body mounting portion passes. A pressure part and a peeling liner collecting part from which the peeling liner is collected are provided.
The rotary pasting compaction unit supports a rotating body, a support mechanism that supports the rotation axis of the rotating body, a steering motion mechanism in which the support mechanism changes an angle in a horizontal plane, and a suspension motion in which the support mechanism swings up and down. A half-cut double-sided tape affixing device characterized by having a mechanism. The half-cut double-sided tape pasting device according to claim 9, wherein the rotating body of the rotary sticking rolling compact is a single rotating body or a pair of left and right rotating bodies.

Images