JP4805401B1 - Adhesive tape roll, method and apparatus for producing the same - Google Patents

Abstract

An adhesive tape roll manufacturing technique capable of always forming a cut for cutting an adhesive tape at a fixed position.
SOLUTION: A winding roller 32 for winding an adhesive tape 2 fed out from a mother roll 31 and a gap 4 provided between the mother roll 31 and the winding roller 32 to form cuts 4 at predetermined intervals. The winding roller 32 and the cut forming roller 33 are rotated in synchronization with each other via a predetermined gear 40.
[Selection] Figure 1

Description

  The present invention relates to an adhesive tape roll for cleaning wound with an adhesive surface facing the front side, and more specifically, relates to a technique for forming a cut for every circumference.

  Even if hair or dust entangled in a carpet or the like is sucked using a vacuum cleaner, the fibers are entangled with each other, and it is difficult to completely remove the hair. Therefore, as a method of removing this kind of dust, there is an adhesive tape roll for cleaning.

  For example, as shown in Patent Document 1, this adhesive tape roll is formed by winding an adhesive tape in which an adhesive portion is formed on one surface of a substrate made of a sheet such as paper so that the adhesive portion is exposed on the front side. In this structure, dust or the like is forcibly removed by rolling the adhesive surface on the floor surface to be cleaned using a dedicated jig (not shown).

  When this type of pressure-sensitive adhesive tape roll is used several times, the adhesion of the pressure-sensitive adhesive portion decreases due to adhesion of dirt to the pressure-sensitive adhesive portion. Therefore, after the adhesive force is reduced, the adhesive force is recovered again by peeling off the dirty surface along the perforation and other cuts, and can be reused.

  Conventionally, this type of cut is perforated by, for example, inserting the press cutting blade into an adhesive tape roll. Since a part of the tape is lifted so as to be caught, the perforated part is raised as compared with other parts, and the whole may be deformed into an onion shape.

  Therefore, in order to prevent this deformation, a method of forming a cut by laser processing, or providing a rotating blade on the conveyance rail of the adhesive tape and winding up while forming a cut has been proposed. The method had the following problems.

  That is, in laser processing, a part of the adhesive tape is burned out by the laser, so that it can be burnt and looks bad. Moreover, since the base material is made of paper, it is necessary to perform a flame retardant treatment.

  In addition, when forming a cut using a rotary blade, it is possible to form a cut by rotating the rotary blade at a fixed period using a clutch or the like, but in order to place all the cuts at the same position Therefore, the thickness of the pressure-sensitive adhesive tape that increases with each circumference must be taken into account, which makes the control troublesome and slows down the feed rate, resulting in poor productivity.

Japanese Patent No. 3272710

  Therefore, the present invention has been made to solve the above-described problems, and the object thereof is to produce an adhesive tape roll manufacturing technique that can always form a cut for cutting an adhesive tape at a fixed position. It is to provide.

In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 is formed by winding an adhesive tape having an adhesive surface formed on one surface of a substrate so that the adhesive surface faces the front side, and the adhesive tape has a cut line for cutting. In the method for producing an adhesive tape roll, which is continuously formed at a predetermined interval along the feeding direction of the adhesive tape, a winding roller for winding up the adhesive tape fed out from the mother roll, the mother roll, and the above A cut-off forming roller provided between the take-up roller and forming the cut at a predetermined interval on the adhesive tape, and the take-up roller and the cut-off forming roller rotate with a predetermined gear. through and are synchronized, and the take-up roller side of the gear, the gear ratio of the cut created roller side of the gear 1: is Oh, wherein Rukoto 1.

The invention according to claim 2 is the invention according to claim 1, wherein the circumferential length of the nth (n is a positive integer) circumference is Ln, the radius of the core is r, the thickness of the adhesive tape is t, and n turns. Ln ′ is the length of the adhesive tape from the start-side cut to the end-side cut, and the angular difference between the start-side cut and the end-side cut of the nth circumference as viewed from the center of the core. When θ, the gears are meshed so as to satisfy the condition of the following formula 1.
L _n ′ = L _n × (360−θ) / 360 (1)
However, L _n = 2π {r + (n−1) × t}

  A third aspect of the invention is characterized in that, in the second aspect, the angle difference θ is in the range of 6 ° ≦ θ ≦ 19 ° or −6 ° ≦ θ ≦ −19 °.

The present invention also includes an apparatus for manufacturing an adhesive tape roll. That is, the invention according to claim 4 is formed by winding an adhesive tape having an adhesive surface formed on one surface of a base material so that the adhesive surface faces the front side, and cutting the cut line on the adhesive tape. In an adhesive tape roll manufacturing apparatus that continuously forms the adhesive tape along the feeding direction of the adhesive tape at a predetermined interval, a winding roller that winds up the adhesive tape fed out from the mother roll, and the mother roll and the winding up A cut forming roller provided between the roller and forming the cut at a predetermined interval on the adhesive tape, and the winding roller and the cut forming roller rotate with each other through a predetermined gear. It is synchronized, and the take-up roller side of the gear, the gear ratio of the cut created roller side of the gear 1: is Oh, wherein Rukoto 1.

The invention according to claim 5 is the invention according to claim 4, wherein the circumferential length of n (n is a positive integer) circumference is Ln, the radius of the winding core is r, the thickness of the adhesive tape is t, and n turns. Ln ′ is the length of the adhesive tape from the start-side cut to the end-side cut, and the angular difference between the start-side cut and the end-side cut of the nth circumference as viewed from the center of the core. When θ, the gears are meshed so as to satisfy the condition of the following formula 1.
L _n ′ = L _n × (360−θ) / 360 (1)
However, L _n = 2π {r + (n−1) × t}

  A sixth aspect of the present invention is characterized in that, in the fifth aspect, the angle difference θ is in a range of 6 ° ≦ θ ≦ 19 ° or −6 ° ≦ θ ≦ −19 °.

  Further, the present invention includes an adhesive tape roll produced by using the method for producing an adhesive tape roll according to any one of claims 1 to 3.

According to invention of Claim 1 and 4, the adhesive tape in which the adhesive surface was formed in the one surface of a base material was wound so that the adhesive surface might face the front side, and it is for cutting to an adhesive tape. In the method of manufacturing an adhesive tape roll that is continuously formed at predetermined intervals along the feeding direction of the adhesive tape, a winding roller that winds up the adhesive tape fed out from the mother roll, the mother roll, and the winding A cut forming roller formed between the take-up roller and forming the cut at predetermined intervals on the adhesive tape, and the winding roller and the cut forming roller are rotated at a gear ratio of 1: by being synchronized via a gear to be 1, it is possible to form so as to overlap in always the same position switching Re eyes, to or adhesive tape roll onion-like deformation The can be reliably prevented.

According to the inventions of claims 2 and 5, the circumferential length of the nth (n is a positive integer) circumference is Ln, the radius of the core is r, the thickness of the adhesive tape is t, and the nth circumference The length of the adhesive tape from the start-side cut to the end-side cut is Ln ′, and the angle difference between the start-end side cut and the end-side cut of the nth circumference viewed from the center of the winding core is θ. When
The gears are meshed so as to satisfy the condition of the following formula 1.
L _n ′ = L _n × (360−θ) / 360 (1)
However, L _n = 2π {r + (n−1) × t}
According to this, the cuts can be freely formed at predetermined intervals under the condition that the angle difference θ is constant.

  According to the third and sixth aspects of the invention, the angle difference θ is in the range of 6 ° ≦ θ ≦ 19 ° or −6 ° ≦ θ ≦ −19 °, so that θ is less than 6 ° (θ <6 °) or less than −6 ° (θ <−6 °), the distance Δd between the start-side cut and the end-side cut as viewed from the center of the core becomes 2 mm or less. As a result, the decrease in adhesive strength cannot be suppressed, and a rail pulling phenomenon may occur. Conversely, if θ is greater than 19 ° (θ> 19 °) or greater than −19 ° (θ> −19 °), the interval Δd exceeds 10 mm. Not right.

The typical perspective view of the adhesive tape roll concerning one embodiment of the present invention. (A) When gear ratio is 1: 1, (b) The gear ratio is less than 1: 1 and (c) The cut structure of the adhesive tape with the gear ratio of more than 1 is described. Explanatory drawing for demonstrating the manufacturing method of the said adhesive tape roll. The partial expanded sectional view of the adhesive tape roll which concerns on 2nd Embodiment of this invention. The schematic diagram of the manufacturing apparatus of the adhesive tape roll which concerns on 2nd Embodiment of this invention. Explanatory drawing explaining the manufacturing method of the adhesive tape roll which concerns on 2nd Embodiment of this invention.

  Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. As shown in FIG. 1, this adhesive tape roll 1 has an adhesive tape 2 on which an adhesive surface 22 for dust removal of a tape base material 21 is formed, so that the adhesive surface 22 faces the front side (outside). It consists of what was wound in roll shape along the core 3.

  In this example, a paper core such as cardboard is used as the core 3, but a synthetic resin core may also be used. Furthermore, a so-called coreless structure in which the pressure-sensitive adhesive tape roll 1 is wound without using the core 3 may be used. In the present invention, the configuration of the core 3 is arbitrary.

  The tape base material 21 is made of paper, for example, and is provided with a laminate film (not shown) on the back surface for reinforcement of the tape base material 21 and for peeling from the next layer. In the present invention, the presence / absence of the laminate film and its material are optional items. For example, by using a resin film as the tape base material 21, the laminate film becomes unnecessary.

  A pressure-sensitive adhesive formed by a predetermined pressure-sensitive adhesive coating is uniformly applied to the pressure-sensitive adhesive surface 22, and non-adhesive portions 23 and 23 having no pressure-sensitive adhesive properties are provided at both ends thereof. In the present invention, the type and shape of the pressure-sensitive adhesive on the pressure-sensitive adhesive surface, the coating method and the coating conditions may be arbitrary.

  In this example, the pressure-sensitive adhesive surface 22 is formed of a so-called solid-coated pressure-sensitive adhesive layer extending along the feeding direction of the pressure-sensitive adhesive tape 2, but may be formed in a complicated shape such as a stripe shape or a dot shape, for example. . Furthermore, two or more types of pressure-sensitive adhesives may be combined, and a stripe-shaped pressure-sensitive adhesive layer may be laminated on the solid-coated pressure-sensitive adhesive layer. The configuration of the pressure-sensitive adhesive surface 22 can be arbitrarily changed according to specifications. It is.

  The adhesive tape 2 is provided with cuts 4 for cutting the adhesive tape 2 at predetermined intervals. The cut 4 is a so-called perforation in which cut portions and uncut portions are alternately and continuously formed. In this example, the cut 4 is formed on a straight line along the width direction of the adhesive tape 2.

  In this example, the cut 4 is composed of a perforation in which cut portions and uncut portions are alternately continuous, but other than this, for example, a micro cut or the like may be used, and compared with other portions of the adhesive tape 2. If it is fragile and can be easily cut by hand, the form is arbitrary.

When the adhesive tape 2 is wound in a roll shape, the cut 4 is formed approximately every one circumference.
That is, the outermost layer cut 4a and the next layer cut 4b are arranged with a predetermined interval Ln ′. The interval L varies depending on the number of turns of the adhesive tape 2.

That is, the circumferential length of the nth (n is a positive integer) circumference is Ln, the radius of the core is r, the thickness of the adhesive tape is t, and the nth turn from the cut on the start side to the cut on the end side When the length of the pressure-sensitive adhesive tape is Ln ′, and the angle difference between the cuts on the end side and the cuts on the end side viewed from the center of the winding core is θ,
The gears are meshed so as to satisfy the condition of the following formula 1.
L _n ′ = L _n × (360−θ) / 360 (1)
However, L _n = 2π {r + (n−1) × t}

  That is, when θ = 0 °, as shown in FIG. 2A, the cuts 4 are arranged in a straight line along the radial direction at a certain position of the adhesive tape 2 wound in a roll shape. be able to. According to this, it is possible to effectively prevent the adhesive tape roll 1 from being deformed into an onion when the cut 4 is formed by a push cutting blade or the like, and the adhesive tape 2 can be used up without waste.

  When θ> 0 °, as shown in FIG. 2B, the position where the cut 4b of the next layer is shifted by + Δd from the cut 4a of the outermost layer of the adhesive tape 2, that is, the circumferential length of the adhesive tape 2 Thus, the cut 4 is formed at a position less than 360 °, so that a so-called reverse step structure is obtained.

  According to this, since the used adhesive surface of the previous adhesive tape appears at the tip of the adhesive tape 2 of the next layer, the adhesive force of the tip portion of the adhesive tape 2 can be weakened, and the new adhesive surface can be put on the floor. It is possible to suppress the rail pulling phenomenon that is likely to occur.

  When θ <0 °, as shown in FIG. 2C, the position where the next layer cut 4 b is shifted by −Δd from the cut 4 a of the outermost layer of the pressure-sensitive adhesive tape 2, that is, the circumference of the pressure-sensitive adhesive tape 2. The cut line 4 is formed at a position that is longer than 360 ° in length, so that a so-called forward step structure is obtained.

According to this, it is possible to divided the boundary portion of the used adhesive surface and unused adhesive surface, it is possible to expose the adhesive tape roll unused reliably all around.

  Here, the angle difference θ is in the range of 6 ° ≦ θ ≦ 19 ° or −6 ° ≦ θ ≦ −19 °, more preferably 9 ° ≦ θ ≦ 12 ° or −9 ° ≦ θ ≦ −12 °. It is preferable to be within the range. According to this, when θ is less than 6 ° (θ <6 °) or less than −6 ° (θ <−6 °), Δd is 2 mm or less, and thus a decrease in adhesive strength cannot be suppressed. There is a risk of rail pulling. Conversely, if θ is greater than 19 ° (θ> 19 °) or greater than −19 ° (θ> −6 °), Δd exceeds 10 mm, and thus unused adhesive tape is discarded wastefully. is not.

  Next, with reference to FIG. 3, the formation process of the cut 4 is demonstrated. As shown in FIG. 3, the adhesive tape roll manufacturing apparatus 30 includes a mother roll 31 of the adhesive tape 2, a take-up roller 32 that winds up the adhesive tape 2 fed from the mother roll 31, a mother roll 31 and a winding roll. And a cut forming roller 33 provided on the conveyance path between the take-up roller 32 and the take-off roller 32.

  In this example, two feeding rollers 34 and 35 and a receiving roller 36 disposed to face the cut forming roller 33 are further provided on the conveyance path. In this embodiment, the specific configurations of the mother roll 31, the feed rollers 34 and 35, and the receiving roller 36 may be arbitrary.

  The winding roller 32 is a roller that is rotationally driven by a driving means (not shown), and the adhesive tape 2 is wound around the outer periphery. In this example, the winding roller 32 is wound so that the adhesive surface 22 faces the front side in order to form simultaneously with the formation of the cut 4.

  In the cut forming roller 33, a blade plate 37 for forming the cut 4 is integrally attached to a part of a cylindrical roller body. The blade plate 37 is attached to the adhesive tape along with the rotation of the cut forming roller 33. 2 is inserted. In this example, the blade plate 37 uses a waved blade that forms a simple cut 4, but may be processed so as to form a more complicated cut 4, and the shape of the blade plate 37 conforms to the specifications. It may be arbitrarily changed depending on the case.

  In the present invention, the winding roller 32 and the cut forming roller 33 are configured to rotate in synchronization via the gear 40. That is, three types of gears 41 to 43 are coaxially provided on the drive shaft of the winding roller 32, and a gear 44 is provided coaxially on the drive shaft of the cut forming roller 33 (both not shown). It has been. These gears 40 are selectively meshed with each other through a predetermined selection means.

  Of the three types of gears 41 to 43, the first gear 41 (hereinafter referred to as the first gear 41) has a gear ratio of 1: 1 with the gear 44 (hereinafter referred to as the fourth gear 44). In this example, both the first gear 41 and the fourth gear 44 have 87 teeth.

According to this, the winding roller 32 and the cut forming roller 33 are synchronously connected at a gear ratio of 1 : 1, so that the cut 4 in the case of θ = 0 ° described above can be easily formed. it can.

  Of the three types of gears 41 to 43, the second gear (hereinafter referred to as the second gear 42) is a gear having an outer diameter larger than that of the first gear 41, and is a gear with the fourth gear 44. The ratio is more than 1: 1. In this example, the number of teeth of the second gear 42 is 90, and the number of teeth of the fourth gear 44 is 87.

  According to this, the winding roller 32 and the cut forming roller 33 are synchronously connected with a gear ratio of more than 1: 1, that is, the gear tooth ratio is connected with 90:87 (angle ratio is 360 °: 348 °). As a result, the cut 4 having the reverse step structure can be easily formed with an angle difference of θ = 12 ° where θ> 0 °.

  Of the three types of gears 41 to 43, the third gear (hereinafter referred to as the third gear 43) is a gear having a smaller diameter than the first gear 41, and the gear ratio with the fourth gear 44 is less than 1. : 1. In this example, the number of teeth of the third gear 43 is 84, and the number of teeth of the fourth gear 44 is 87.

  According to this, the winding roller and the cut forming roller 33 are connected synchronously with a gear ratio of less than 1: 1, that is, with a gear tooth ratio of 84:87 (angle ratio of 348 °: 360 °). Therefore, the cut 4 of the forward step structure can be easily formed with the above-described angle difference of θ = −12 ° where θ <0 °.

  In this example, the gear 40 is provided with three types of gears 41 to 43 on the take-up roller 32 side, and a fixed fourth gear 44 is provided on the cut forming roller 33 side. The fourth gear 44 may be provided, and three types of gears 41 to 43 may be provided on the cut forming roller 33 side.

  Next, more specific embodiments of the present invention will be described. The radius r of the core 3 is 20 mm, the thickness t of the adhesive tape 2 is 0.1 mm, and θ = 0 °, θ = + 12 °, and θ = −12 ° when the adhesive tape is wound 90 times. The position of the break 4 in the case was calculated.

[When θ = 0 °]
When θ = 0 °, the length Ln of the first round is L _n = 2π {r + (n−1) × t}, and is 125.60 mm, so that there is no deviation of Δd. The length Ln ′ gradually increases in accordance with the number of turns of 2. The calculation results are shown in Table 1. According to this, as the number of turns increases, the length Ln ′ is gradually increased according to the increase in the thickness t, and the cut 4 is arranged at the same position.

[When θ = + 12 °]
When θ = + 12 °, the length Ln of the first round is 125.60 mm because L _n = 2π {r + (n−1) × t}. If the next second layer is calculated as it is, it becomes 126.228 mm. However, in order to provide a deviation of θ = + 12 °, L2 ′ = L2 × (360−12) /360=122.02 mm and Δd is 4 .208mm. Thereby, the cut line 4 is formed to have a reverse step. The calculation results are shown in Table 2 (hereinafter the same).

[When θ = -12 °]
Similarly, when θ = −12 °, the length Ln of the first round is 125.60 mm because L _n = 2π {r + (n−1) × t}. The next second layer is calculated to be 126.228 mm, but in order to provide a deviation of θ = −12 °, L2 ′ = L2 × (360 + 12) /360=130.436 mm, and Δd is −4 .208mm. Thereby, the cut line 4 is formed to be a forward step. The calculation results are shown in Table 3 (hereinafter the same).

  According to this, only by changing the gear ratio between the winding roller 32 and the cut forming roller 33, the positions of the cuts can be overlapped and shifted back and forth. The pressure-sensitive adhesive tape roll 1 having the cut 4 can be easily produced.

  Next, a second embodiment of the present invention will be referred to with reference to FIGS. In addition, the same referential mark is attached | subjected to the location considered to be the same as that of embodiment mentioned above, or the description is abbreviate | omitted.

  The adhesive tape roll 1 a is provided with a cutting guide member 5 for reliably cutting the adhesive tape 2 along the cut line 4. In the second embodiment, the cut 4 is set so that the winding roller 32 and the cut forming roller 33 have a gear ratio of less than 1: 1, that is, the gear 43 and the gear 44 are engaged. Yes. As a result, so-called forward step perforations are formed in which each cut 4 is formed so that its circumferential length exceeds 360 °.

  The cutting guide member 5 is provided along the core side (counter feed direction) of the cut 4. The cutting guide member 5 is made of a synthetic resin film such as PET (polyethylene terephthalate) or PP (polypropylene). In this example, the cutting guide member 5 is made of a resin material having a higher tear strength than the tape base material 21, but may be a flexible material such as paper, for example, and the base material 21 and the cutting guide member 5 It is sufficient that the strength obtained by superimposing the layers is stronger than the strength of the base material 21 alone. The cutting guide member 5 is preferably colored, for example, orange so that the position of the cut 4 can be grasped at a glance.

  The cutting guide member 5 is formed in a strip shape having a width W of 1 to 10 mm, more preferably 2 to 5 mm. According to this, when the width W is less than 1 mm, the strength is weakened, and there is a possibility that it cannot be separated cleanly along the cut 4. On the other hand, when the width W exceeds 10 mm, the adhesive area is reduced and the dust collecting ability is lowered.

  In this example, the surface of the cutting guide member 5 is a non-adhesive surface. However, a thin adhesive may be applied to the surface of the cutting guide member 5 so that the cutting guide member 5 can remove dust. In this case, in order to suppress the rail pulling phenomenon at the end portion of the adhesive tape 2, it is preferable that the adhesive force is weaker than other portions.

  According to this, by providing the cutting guide member 5 along the cut line 4, the outermost adhesive tape 2 can be applied along the cut line 4 even if the hair is attached to the end portion of the adhesive tape 2. It can be cut cleanly and peeled off.

  Next, with reference to FIG. 5 and FIG. 6, the manufacturing method of this adhesive tape roll 1 is demonstrated. In addition, this adhesive tape roll manufacturing apparatus is equipped with the housing | casing which is not shown in figure, and is integrated in it.

  As shown in FIG. 5, the manufacturing apparatus of the adhesive tape roll 1 is similar to the first embodiment, and includes a mother roll 31 of the adhesive tape 2 and a take-up roller 32 that winds the adhesive tape 2 fed from the mother roll 31. And a cut forming roller 33 provided on the conveying path between the mother roll 31 and the winding roller 32, and the winding roller 32 and the cut forming roller 33 rotate synchronously with each other via gears 43 and 44. To be connected. These basic structures are the same as those in the first embodiment.

  This manufacturing apparatus is provided with delivery means 80 for feeding the cutting guide member 5 toward the adhesive tape 2. The feeding means 80 includes a raw roll 81 of a cutting guide member around which a sheet-like cutting guide member 5a (cutting guide member sheet 5a) is wound, and a cutting guide member from the original roll 81 toward the cut forming means 70. Conveying rollers 82 and 83 for feeding out the sheet 5a and a guide plate 84 for guiding the cutting guide member sheet 5a are provided.

  The conveying rollers 82 and 83 are rotationally driven by a driving unit (not shown), and send the cutting guide member sheet 5a toward the cut forming roller 33 at a predetermined interval (W: 1 to 10 mm). In this example, auxiliary rollers 85 and 86 are provided upstream of the conveying rollers 82 and 83.

  The guide plate 84 includes a so-called slide having one end (upstream side) disposed toward the exit side of the transport rollers 82 and 83 and the other end disposed obliquely toward the entrance side of the cut forming roller 33. The cutting guide member sheet 5a is guided along the upper surface.

  The tip 841 (rotary blade 331 side in FIG. 3) of the guide plate 84 is curved so as to feed the cutting guide member sheet 5a substantially horizontally toward the rotary blade 331 and the feed roller 36.

  According to this, the tip of the cutting guide member sheet 5 a guided by the guide plate 84 can be reliably guided between the rotary blade 331 and the feed roller 36, and the cutting guide member sheet 5 a is pasted on the adhesive surface 22. Can do.

  Next, an example of a procedure for forming the cutting guide member 5 will be described with reference to FIGS. First, as an initial setting, the adhesive tape 2 is set in advance along the tape conveyance path, and the tip thereof is fixed to the winding core (not shown) of the winding roller 32.

  Further, the cutting guide member sheet 5 a is set on the conveying path of the conveying rollers 82 and 83, and the leading end thereof is pulled out to the leading end portion 841 of the guide plate 84. Furthermore, the formation width W of the cutting guide member 5 is set (in this example, W: 1 to 10 mm).

  When the start button (not shown) is operated after the initial setting is completed, the control means drives the drive means (not shown), whereby the adhesive tape 2 starts to be gradually wound along the take-up roller 32.

  As shown in FIG. 6 (a), when the adhesive tape 2 is drawn out to a constant length of almost one circumference, the control means issues a command to the conveying rollers 82 and 83, and receives the instruction, thereby conveying rollers 82 and 83. Is a predetermined length of the cutting guide member sheet 5a based on a preset value.

  The cut guide member sheet 5a that has been fed out moves along the guide plate 84 and is fed between the cut forming roller 33 and the feed roller 36 as shown in FIG. 6B. At this time, the cutting guide member sheet 5 a is introduced between the rolls while the tip thereof is bonded along the adhesive surface 22 of the adhesive tape 2.

  When the cut forming roller 33 further rotates and the rotary blade 331 comes directly below, the tip thereof is inserted into the adhesive tape 2 to form the cut 4, and at the same time, the cutting guide member sheet 5a is cut.

  Further, when the feed roller 36 rotates, the cutting guide member 5 substantially cut as shown in FIG. 6C is peeled off in a state of being bonded to the adhesive tape 2 along the cut line 4, and the adhesive tape. 2 is wound on the winding side.

  At that time, since the conveying rollers 82 and 83 are synchronized with the cut forming roller 33, the cutting guide member 5 can be reliably attached along the cut 4 formed at a different position each time.

DESCRIPTION OF SYMBOLS 1 Adhesive tape roll 2 Adhesive tape 3 Winding core 4 Cut 5 Cutting guide member 30 Adhesive tape roll manufacturing apparatus 31 Mother roll 32 Winding roller 33 Cut forming roller 40 Gear 80 Sending means

Claims (7)

A pressure-sensitive adhesive tape having an adhesive surface formed on one side of the substrate is wound so that the pressure-sensitive adhesive surface faces the front side, and the cut line for cutting is along the feeding direction of the pressure-sensitive adhesive tape. In the manufacturing method of the adhesive tape roll that is continuously formed with a predetermined interval,
A winding roller that winds up the adhesive tape fed out from the mother roll, and a slit forming roller that is provided between the mother roll and the winding roller and that forms the cut at predetermined intervals on the adhesive tape. The winding roller and the cut forming roller are synchronized with each other through a predetermined gear, and the gear ratio between the winding roller side gear and the cut forming roller side gear is 1: production method of the adhesive tape roll Oh wherein Rukoto 1. n (where n is a positive integer) the circumference of the circumference is Ln, the radius of the core is r, the thickness of the adhesive tape is t, and the adhesion from the start-side cut to the end-side cut of the nth turn When the tape length is Ln ′, and the angle difference between the cuts on the start side and the cuts on the end side of the nth cycle viewed from the center of the winding core is θ,
The method for producing an adhesive tape roll according to claim 1, wherein the gears are meshed so as to satisfy the condition of the following formula 1.
L _n ′ = L _n × (360−θ) / 360 (1)
However, L _n = 2π {r + (n−1) × t}   3. The method for producing an adhesive tape roll according to claim 2, wherein the angle difference θ is in a range of 6 ° ≦ θ ≦ 19 ° or −6 ° ≦ θ ≦ −19 °. A pressure-sensitive adhesive tape having an adhesive surface formed on one surface of a base material is wound so that the pressure-sensitive adhesive surface faces the front side, and a predetermined cut along the feeding direction of the pressure-sensitive adhesive tape is formed on the pressure-sensitive adhesive tape. In the production equipment for adhesive tape rolls that are continuously formed at intervals,
A winding roller that winds up the adhesive tape fed out from the mother roll, and a slit forming roller that is provided between the mother roll and the winding roller and that forms the cut at predetermined intervals on the adhesive tape. The winding roller and the cut forming roller are synchronized with each other through a predetermined gear, and the gear ratio between the winding roller side gear and the cut forming roller side gear is 1: 1 in Ah Rukoto manufacturing apparatus of the adhesive tape roll according to claim. n (where n is a positive integer) the circumference of the circumference is Ln, the radius of the core is r, the thickness of the adhesive tape is t, and the adhesion from the start-side cut to the end-side cut of the nth turn When the tape length is Ln ′, and the angle difference between the cuts on the start side and the cuts on the end side of the nth cycle viewed from the center of the winding core is θ,
The said gears are meshed | engaged so that the conditions of the following formula | equation 1 may be satisfy | filled, The manufacturing apparatus of the adhesive tape roll of Claim 4 characterized by the above-mentioned.
L _n ′ = L _n × (360−θ) / 360 (1)
However, L _n = 2π {r + (n−1) × t}   6. The pressure-sensitive adhesive tape roll manufacturing apparatus according to claim 5, wherein the angle difference θ is in a range of 6 ° ≦ θ ≦ 19 ° or −6 ° ≦ θ ≦ −19 °.   A pressure-sensitive adhesive tape roll produced using the method for producing a pressure-sensitive adhesive tape roll according to any one of claims 1 to 3.

Images