JP2011021066A - Method for producing roll tape for balance weight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for efficiently producing a roll tape for a balance weight obtained by winding a double-sided self-adhesive tape in which a release sheet is easily released when a balance weight is attached. <P>SOLUTION: The method for producing a roll tape for a balance weight comprises: a separation step in which a substrate of a double-sided self-adhesive tape R0 is cut and separated into a first substrate portion T1 and a second substrate portion T2; a first winding step in which the first substrate portion is wound; and a second winding step in which the processed roll tape is obtained by winding the processed double-sided self-adhesive tape comprising the second substrate portion and a release sheet exposed at the portion from which the first substrate portion is removed. The roll tape for a balance weight is efficiently produced by using the processed roll tape obtained in such a way. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for producing a balance weight roll tape obtained by winding a double-sided pressure-sensitive adhesive tape used when a balance weight is attached to a rotating body such as a wheel equipped with a tire.

  In a rotating body that rotates at high speed, such as a wheel of an automobile or a two-wheeled vehicle, a balance weight is attached to a peripheral portion (such as a wheel rim) of the rotating body in order to eliminate unbalance that causes vibration. At this time, the balance weight is often attached to the inner peripheral surface of the rim of the wheel by a double-sided adhesive tape in order to ensure the design of the wheel and prevent its damage.

  Such a balance weight has a substantially band-like shape that can be subdivided for easy weight adjustment. A double-sided adhesive tape is attached to the back surface of the balance weight and one adhesive surface (wheel of the double-sided adhesive tape). In many cases, a release sheet that can be easily peeled off is attached to the inner peripheral surface of the rim. Hereinafter, in this specification, this balance weight and the double-sided pressure-sensitive adhesive tape (including a release sheet) adhered thereto are collectively referred to as a balance weight set.

  By the way, when the release sheet is peeled off from the balance weight set and the balance weight of the desired weight is attached to the inner peripheral surface of the rim of the wheel, the adhesive surface and the release sheet have the same shape (or the same width) It is difficult to peel the release sheet from the substrate, and workability is poor. Therefore, as described in the following patent document, the release sheet can be easily released from the base material of the double-sided pressure-sensitive adhesive tape by slightly protruding the release sheet from the base material of the double-sided pressure-sensitive adhesive tape and gripping the portion (tab portion). Various balance weight sets that can be made have been proposed.

Utility Model Registration No. 3066945 JP 2001-65639 A JP 2004-245289 A JP 2004-251324 A

However, there has not been much proposal for an efficient method for producing a balance weight roll tape obtained by winding a double-sided pressure-sensitive adhesive tape having a tab portion on a release sheet.
This invention is made | formed in view of such a situation, and it aims at providing the method which can manufacture such a roll tape for balance weights efficiently.

  As a result of intensive research and trial and error to solve this problem, the inventor used a conventional double-sided pressure-sensitive adhesive tape having the same width and no so-called tab portion as the pressure-sensitive adhesive surface of the tape base material and the release sheet, in the longitudinal direction. A new idea was made to separate and remove a part of the tape base material while leaving a release sheet by cutting in (width direction and vertical direction). By developing this result, the present invention described below has been completed.

<Production method of roll tape for balance weight>
(1) The method for producing a roll tape for balance weight according to the present invention includes a tape base material in which a first adhesive surface that can be attached to a balance weight and a second adhesive surface that can be attached to a rotating body are turned to the back. 2. Arrangement step of rotatably disposing a roll tape wound with a double-sided adhesive tape comprising a release sheet that is releasably attached to the adhesive surface, and a first adhesive surface of the double-sided adhesive tape drawn from the roll tape Separating step of separating the tape base material into a first base material portion and a second base material portion by cutting the tape base material while leaving the release sheet in the extending direction of the tape base material from the side And a first winding step of winding up the first base material portion peeled from the release sheet after the separation step, and a second base material portion separated from the first base material portion after the separation step, The portion that is attached to the second base material portion and from which the first base material portion has been removed And a second winding step for obtaining a processed roll tape obtained by winding the processed double-sided pressure-sensitive adhesive tape comprising the exposed release sheet, and obtaining a balance weight roll tape from the processed roll tape. .

(2) According to the production method of the present invention, the tape base material having the adhesive surfaces on both back surfaces is separated into the first base material portion and the second base material portion in the separation step. Here, since the release sheet itself is not separated, only the separated first base material portion is wound up in the first winding step. On the other hand, the release sheet is in a state of being attached to the second base material portion, which is the remaining portion of the tape base material, with substantially the original shape. The processed double-sided pressure-sensitive adhesive tape comprising the release sheet and the second base material portion is wound together in the second winding step. Thus, a processed roll tape around which the processed double-sided pressure-sensitive adhesive tape is wound can be obtained efficiently. This processed roll tape becomes a roll tape for balance weight, and is supplied to the work process of sticking the double-sided adhesive tape to the balance weight.
In addition, when the exposed edge part of the release sheet formed by removing the first base material part from the original double-sided adhesive tape attaches the balance weight to a wheel rim or the like, a knob for peeling the release sheet (So-called tab portion).
In addition, according to the production method of the present invention, a commercially available conventional double-sided pressure-sensitive adhesive tape that can be easily procured can be used effectively, and thus a roll tape for balance weight made of a double-sided pressure-sensitive adhesive tape with a tab (processed double-sided pressure-sensitive adhesive tape) can be obtained at low cost. be able to.

<Others>
Unless otherwise specified, “x to y” in the present specification includes the lower limit x and the upper limit y. Further, the lower limit and the upper limit described in the present specification can be arbitrarily combined to constitute a range such as “ab”. Further, if the “process” in the present invention is changed to “means”, the production method of the present invention can be considered as a production apparatus for a balance weight roll tape.
The “rotary body” referred to in the present invention is not particularly limited, but typical examples thereof include an automobile wheel and a motorcycle wheel (especially, a rim thereof).

It is a perspective view which shows the manufacturing apparatus of the roll tape for balance weights concerning this invention. It is a perspective view which shows the partial cross section of the process double-sided adhesive tape which concerns on this invention. It is a perspective view which shows the wheel balance weight which affixed a part of the process double-sided adhesive tape.

  The present invention will be described in more detail with reference to embodiments. In addition, one or two or more configurations arbitrarily selected from the contents described in this specification, including the following embodiments, can be added to the configuration of the present invention described above. Note that which embodiment is the best depends on the target, required performance, and the like.

"Production method"
(1) Arrangement Step The arrangement step is a step of rotatably arranging a roll tape wound with a double-sided adhesive tape that is a raw material before processing. For example, a process of storing a roll tape around which a double-sided adhesive tape as a material is wound in a roll cassette or the like, making the roll cassette rotatable, and allowing a conventional double-sided adhesive tape to be pulled out at any time. is there. The size and type of the double-sided pressure-sensitive adhesive tape or roll tape are not limited. However, as for the double-sided adhesive tape used at this stage, it is normal that the tape base material and the peeling sheet which adhered to the adhesive surface of the one side are the same width.

(2) Separation process In the separation process, the tape base material is cut by leaving the release sheet in the extending direction of the tape base material from the first adhesive surface side of the double-sided adhesive tape drawn from the roll tape. Is a step of separating the first base material portion and the second base material portion. Therefore, only the tape substrate is separated here, and the release sheet is not separated.
But it is preferable that the blade edge | tip of the cutter (cutter) which cuts into a tape base material is the state contact | abutted to the peeling sheet. This is because the tape base material is reliably separated into the first base material portion and the second base material portion, and the separation surface (fracture surface) between them is in a clean state.

Further, the separation step is usually performed while moving the double-sided adhesive tape. Therefore, it is preferable that the separation step of the present invention is a step in which the tip of the cutter blade for cutting into the tape base material is slidably contacted on the surface of the release sheet attached to the second adhesive surface.
Here, the release sheet usually has a thickness of about several tens to several hundreds of μm. For this reason, in order to completely separate the tape base material while not separating the release sheet, the position of the blade edge of the cutter is preferably adjusted with high accuracy by a micrometer or the like. In order to make use of such fine adjustment, it is desirable that the cradle for receiving the blade edge of the cutter while supporting the double-sided adhesive tape is a highly rigid body such as metal.

  In addition, the cut | disconnection of the grade which is not isolate | separated into a peeling sheet may enter | inject by the separation process of this invention. The depth of the cut is not particularly limited as long as it is within the thickness of the release sheet. Even if some cuts are made in the release sheet, it is sufficient if the strength that allows the release sheet to be peeled off from the second adhesive surface of the tape base material is sufficient when the balance weight is attached to a wheel or the like. is there.

(3) 1st winding process A 1st winding process is a process of making the 1st base material part isolate | separated from the tape base material peel from a peeling sheet, and wind up after said isolation | separation process. For example, the first winding step can be easily performed by guiding the first base material portion after the separation step to a roll cassette or the like and rotating the roll cassette at an appropriate speed. By performing the first winding step, the excess first base material portion can be continuously removed. And the process double-sided adhesive tape which consists of a peeling sheet and the 2nd base material part which the part corresponding to the 1st base material part protruded excessively comes to be obtained continuously.

  In addition, the 1st base material part wound up by the roll cassette by the 1st winding process can be easily removed by making a cut etc. in the width direction of the roll cassette, and the roll cassette can be reused. It is.

(4) 2nd winding process A 2nd winding process is a process of winding up the process double-sided adhesive tape which consists of a 2nd base material part and a peeling sheet after a isolation | separation process, and obtaining a process roll tape. For example, the second winding step can be easily performed by guiding the second base material portion after the separation step to a roll cassette or the like and rotating the roll cassette at an appropriate speed. By this second winding step, a processed roll tape that becomes the final balance weight roll tape can be obtained.
In the present invention, the temporal relationship between the first winding process and the second winding process is not questioned, and both processes may be performed substantially simultaneously after the separation process.

(5) In the case of the present invention, there are no particular restrictions on the separation method, the first winding step, and the second winding step, which are performed after the disposing step, and the specific progress method and progress speed. However, in order to obtain a processing roll tape industrially efficiently, it is preferable that the separation step, the first winding step, and the second winding step proceed continuously with the movement of the double-sided pressure-sensitive adhesive tape.

  In addition, the rotation speed of the material roll tape, the rotation speed of winding up the first base material portion separated from the double-sided adhesive tape drawn from the roll tape, and the rotation speed of winding up the second base material portion are respectively appropriate. It is preferably adjusted. If an imbalance occurs in the rotation speeds, the first base material part may be broken in the middle, or the processing roll tape may be wound up, and the separation process, the first winding process, and the second winding process may occur. It becomes difficult to perform the process smoothly and continuously.

  Such adjustment of the rotational speed may be such that the rotational speed is individually maintained at a suitable constant value, but each rotational speed is appropriately controlled according to the progress of winding, or the generated rotational speed. It is preferable that the imbalance is absorbed or eliminated in a timely manner. In order to absorb or eliminate the rotational speed imbalance, a torque limiter attached to the rotating shaft of the roll tape, the rotating shaft of the first base material portion or the rotating shaft of the second base material portion (processing roll tape) is operated. Can be realized.

  The first winding step is a step of rotating the first roller that winds the first base material portion after the separation step, and the second winding step is the second roller that winds the processed double-sided adhesive tape after the separation step. In the step of rotating the roller, it is preferable that the rotation of the first roller is interlocked with the rotation of the second roller. Furthermore, it is preferable that the rotation of the roll tape as the material is driven by the rotation of the second roller.

《Double-sided adhesive tape (including processed double-sided adhesive tape)》
(1) The double-sided pressure-sensitive adhesive tape referred to in the present invention is peeled off from the tape base material and the second pressure-sensitive adhesive surface, in which the first pressure-sensitive adhesive surface that can be attached to the balance weight and the second pressure-sensitive adhesive surface that can be attached to the rotating body are facing away. It consists of a release sheet that can be applied. Moreover, the processed double-sided pressure-sensitive adhesive tape is obtained by removing the separated first base material portion from the double-sided pressure-sensitive adhesive tape. In other words, the processed double-sided pressure-sensitive adhesive tape is formed by attaching a release sheet from which the portion from which the first base material portion has been removed is exposed to the second base material portion. Both are common in that the tape base material or the second base material portion has adhesive surfaces on both back sides, and the release sheet is attached to one side (second adhesive surface) side.

(2) The material, thickness, size, etc. of the tape base material are not limited. For example, it may be a sheet made of paper or resin. However, it is preferable that the mat is made of a flexible material (cushion material) such as foamed resin that absorbs delicate unevenness on the surface to be adhered and allows the balance weight to be stably attached to the rotating body. is there.

(3) The material of the release sheet is not particularly limited as long as it can be easily released from the adhesive surface of the tape substrate. However, as described above, it is preferable to have a thickness and strength that do not separate even if the blade is slightly cut by the blade edge of the cutter.

《Balance weight》
The balance weight (weight body) may be of any material or shape. For example, the material of the balance weight may be any of lead, iron, zinc and alloys thereof. However, a balance weight made of a lead-free metal is preferable because it has a small environmental load on the natural world. Specifically, the balance weight is preferably made of an iron-based metal such as pure iron or an iron alloy (such as steel or stainless steel).

  The shape of the balance weight may be a bowl shape, a flat plate shape, a strip shape, or a curved surface shape. But it is good to be easy to adapt to curved surfaces, such as a wheel rim to install. For example, it is preferable that grooves are formed in the width direction at appropriate intervals to form a band that is easily deformed, or that the attachment surface side is gently curved. If grooves are provided at appropriate intervals, the weight of the balance weight attached to the wheel rim can be easily adjusted by dividing and cutting at the groove portions. The groove may be provided on only one side of the balance weight or on both sides.

  In addition, it is preferable that the coating (process) and various surface treatments (process) are given for the rust prevention of a balance weight, and aesthetic improvement. Examples of such coating include acrylic coating using an acrylic resin, and one type thereof includes metallic coating such as aluminum silver powder coating. Surface treatment includes chrome plating and chromate treatment.

The present invention will be described more specifically with reference to examples.
"Manufacturing equipment"
First, a roll tape manufacturing apparatus M (hereinafter simply referred to as “manufacturing apparatus M”) used in the method for manufacturing a balance weight roll tape of the present invention is shown in FIG.
(1) The manufacturing apparatus M includes a base 1 made of a highly rigid metal, a supply unit M0 provided on the lower right side of the base 1, a separation unit MK provided in the center of the base 1, and an upper left side of the base 1 The first winding part M1 provided on the lower side of the base 1 and the second winding part M2 provided on the lower left side of the base 1.

  The supply unit M0 includes a roll cassette C0 that stores a roll tape RT0 wound with a double-sided adhesive tape R0 that is a material, and a shaft A0 that supports the roll cassette C0 and rotates together. The roll cassette C0 can be easily attached to and detached from the shaft A0 by a lock nut (not shown) that is screwed onto the shaft A0.

  The separation unit MK includes a cutter 30, a micrometer 31 that adjusts the protruding amount of the cutter 30, a receiving table 34 that faces the cutting edge of the cutter 30 and receives the double-sided adhesive tape R 0, and a double-sided adhesive tape in front of the receiving table 34. The idler 35 for guiding R0, the idler 36 for guiding the processed double-sided adhesive tape R2 (second base material portion T2 and release sheet S) formed behind the cradle 34, the cutter 30 and the micrometer 31 are housed and held. Frame body 37 (in FIG. 1, for the sake of convenience, it is indicated by a one-dot chain line).

  The cutter 30 is disposed so that the blade surface thereof is parallel to the front surface of the base 1, and the blade edge is directed to the longitudinal direction of the tape base material T0 of the double-sided adhesive tape R0 and to the supply unit M0 side. A slight gap is formed between the cutting edge of the cutter 30 and the cradle 34. Note that this gap interval is set by the micrometer 31 to be equal to or slightly smaller than the thickness of a release sheet S described later.

  The first winding unit M1 includes a roll cassette C1 that winds the first base member T1 separated from the double-sided adhesive tape R0 by the cutter 30, a shaft A1 that supports the roll cassette C1 and rotates together, and a first It consists of an idler 11 for guiding the base material portion T1 and a slider 12. Here, the roll cassette C1 can be easily attached to and detached from the shaft A1 by a lock nut (not shown) screwed into the shaft A1. Further, the slider 12 moves in a direction parallel to the shaft A1 (perpendicular to the base surface of the base 1), so that the first base member T1 is evenly wound around the roll cassette C1. To guide you. The slider 12 is driven by a slider / crank mechanism 13 (shown by a one-dot chain line in FIG. 1 for convenience).

  The second winding unit M2 includes an idler 21 that guides the processed double-sided adhesive tape R2 from which the first base member T1 has been removed from the double-sided adhesive tape R0, a roll cassette C2 that winds the processed double-sided adhesive tape R2, It comprises a shaft A2 that supports and rotates together with the roll cassette C2. The roll cassette C2 can be easily attached to and detached from the shaft A2 by a lock nut (not shown) that is screwed onto the shaft A2. Incidentally, workability can be improved by making roll cassette C0 and roll cassette C2 into the same type.

(2) By the way, regarding the drive relationship of the shafts A0, A1, and A2, the shaft A2 is the main drive, the shaft A1 is interlocked with the shaft A2, and the shaft A0 is driven by them. That is, first, the shaft A2 is driven by a drive motor (not shown) attached to the back side of the base 1. Next, the shaft A1 rotates in conjunction with the shaft A2 via a belt suspended on the shaft A2. Further, the shaft A0 rotates in conjunction with the double-sided adhesive tape R0 being unwound by the roll cassette C1 and the roll cassette C2. That is, the shaft A0 rotates following the shafts A1 and A2.
By the way, the drive motor described above is a servo motor capable of finely adjusting the rotation speed, whereby the rotation of the shaft A2 and the roll cassette C2 is appropriately adjusted. On the other hand, a torque limiter (not shown) is attached to the back side of the base 1 of the shaft A0 and the shaft A1. As a result, an inappropriate rotational speed difference with the shaft A2 or an inappropriate tension acting on the double-sided adhesive tape R0 (R2) or the first base material portion T1 is absorbed or eliminated in a timely manner. ing.

<Production method of roll tape for balance weight>
A process of manufacturing a balance weight roll tape by the manufacturing apparatus M described above will be described.
(1) First, roll tape RT0 around which double-sided adhesive tape R0 is wound is prepared as a material. This double-sided pressure-sensitive adhesive tape R0 is a commercial product comprising a tape base material T0 having an adhesive surface on both sides facing away, and a release sheet S having the same width as the tape base material T0 attached to one of the adhesive surfaces. is there.
The roll cassette C0 on which the roll tape RT0 is set is attached to the shaft A0. As a result, the roll tape RT0 can be rotated via the roll cassette C0 and the shaft A0 (arrangement step).

Next, the double-sided pressure-sensitive adhesive tape R0 is pulled out from the roll cassette C0, and the tip of the double-sided pressure-sensitive adhesive tape R0 is guided to the center upper surface of the cradle 34 through the idler 35. At this time, the protruding amount of the cutting edge of the cutter 30 is adjusted by the micrometer 31 so that the tip of the cutting edge of the cutter 30 slightly contacts the release sheet S of the double-sided adhesive tape R0.
When the double-sided adhesive tape R0 is pulled out from the supply unit M0 toward the first winding unit M1 or the second winding unit M2 with respect to the cutter 30 in this state, the tape base material T0 is cut and the first base material is cut. It is separated into a part T1 and a second base part T2 (separation step).

The separated first base material portion T1 is peeled off from the release sheet S, guided to the idler 11 and the slider 12, and wound around the roll cassette C1 whose tip is set to be rotatable beforehand (first winding step). .
The other separated second base material portion T2 is guided to the idler 21 with the release sheet S attached, and is wound around the roll cassette C2 whose tip is set to be rotatable beforehand (second winding step).

(2) When the shaft A2 is driven by a drive motor after performing the above-described steps, the processed double-sided adhesive tape R2 is continuously wound around the roll cassette C2 (second winding step). Here, since the shaft A1 is interlocked with the shaft A2, the first base material portion T1 is also wound around the roll cassette C1 in conjunction with the winding of the processed double-sided adhesive tape R2 (first winding step). Further, the roll cassette C0 is driven so as to be pulled by the processed double-sided adhesive tape R2 and the first base material portion T1, and the double-sided adhesive tape R0 is supplied without slack.
When all the double-sided adhesive tape R0 is sent out from the raw material roll tape RT0, a processed roll tape RT2 made of the processed double-sided adhesive tape R2 is newly formed in the roll cassette C2.
Then, if the processed roll tape RT2 is taken out from the roll cassette C2, the balance weight roll tape referred to in the present invention can be obtained.

《Processed double-sided adhesive tape and balance weight set》
For reference, an enlarged perspective view of a part of the processed double-sided pressure-sensitive adhesive tape R2 obtained through the separation step described above is shown in FIG. As can be seen from FIG. 2, the release sheet S is attached only to the second adhesive surface T2b facing away from the first adhesive surface T2a, and the edge portion protruding from the end portion of the second base material portion T2 is It becomes a tab part St. Then, as shown in FIG. 3, when the processed double-sided adhesive tape R <b> 2 is attached to a flat or strip-like balance weight W, a balance weight set H is obtained.
The release sheet S of the balance weight set H is easily peeled from the second base material portion T2 by pulling while holding the tab portion St. If the exposed second adhesive surface T2b is adhered to the inner peripheral surface of the wheel rim, the balance weight W is efficiently attached to the wheel rim.

S Release sheet R0 Double-sided adhesive tape RT0 Roll tape R2 Processed double-sided adhesive tape RT2 Processed roll tape T0 Tape substrate T1 First substrate portion T2 Second substrate portion T2a First adhesive surface T2b Second adhesive surface W Balance weight

Claims (4)

Both surfaces comprising a tape substrate having a first adhesive surface that can be attached to the balance weight and a second adhesive surface that can be attached to the rotating body, and a release sheet that is releasably attached to the second adhesive surface. An arrangement step of rotatably arranging a roll tape wound with an adhesive tape;
A cut is made in the tape base material while leaving the release sheet in the extending direction of the tape base material from the first adhesive surface side of the double-sided adhesive tape drawn out from the roll tape, and the tape base material is a first base. A separation step of separating the material part and the second base part;
A first winding step of winding the first base material part peeled off from the release sheet after the separation step;
Processing comprising the second base material portion separated from the first base material portion after the separation step and the release sheet attached to the second base material portion and from which the first base material portion has been removed A second winding step of obtaining a processing roll tape wound with a double-sided adhesive tape,
A method for producing a balance weight roll tape comprising obtaining the balance weight roll tape comprising the processed roll tape.   2. The balance weight according to claim 1, wherein the separation step is a step in which a tip of a cutting edge of a cutter for cutting into the tape base material is slidably contacted on the surface of the release sheet attached to the second adhesive surface. For manufacturing roll tapes.   The balance weight roll tape manufacturing method according to claim 1 or 2, wherein the separation step, the first winding step, and the second winding step are continuously performed in conjunction with the movement of the double-sided pressure-sensitive adhesive tape. . The first winding step is a step of rotating a first roller that winds the first base material portion after the separation step;
The second winding step is a step of rotating a second roller that winds the processed double-sided adhesive tape after the separation step,
The method for producing a roll tape for balance weight according to claim 1 or 3, wherein the rotation of the first roller is interlocked with the rotation of the second roller.

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