JP2004331980A - Pressure-sensitive adhesive tape - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive tape which even if seal working using automatic application equipment is made, automatic change of the adhesive tape is smoothly performed, and the working can be efficiently made without interruption. <P>SOLUTION: In the pressure-sensitive adhesive tape comprising forming an adhesive layer on one side surface of a substrate and winding the resulting product in a rolling shape, the adhesive layer has a region of reduced adhesive power at an end portion thereof. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a pressure-sensitive adhesive tape, and more particularly to a pressure-sensitive adhesive tape used for can sealing.

A base material such as a soft vinyl chloride film or a polyolefin-based resin film as a sealing material for sealing and sealing the gap between the lids of paper or plastic boxes, containers, and containers such as metal cans. BACKGROUND ART A pressure-sensitive adhesive tape (also referred to as "adhesive tape" in the present invention) in which a rubber-based adhesive or an acrylic-based adhesive is applied to one surface is widely used. The sealing work of containers and cans can be performed manually, but when the amount of the object to be sealed (the amount of material) is large, mechanical sticking by an automatic sticking device called a so-called “can sealer” is adopted. Often.
When performing the sealing work by mechanical bonding, automatic switching of the adhesive tape roll called "autochanger" is performed in order to efficiently switch the roll around which the adhesive tape for sealing (pressure-sensitive adhesive tape) is wound. The device is used. The autochanger switches the rolls by rotating a plurality of adhesive tape rolls installed on a turntable called a “stage” as the turntable rotates.

Hereinafter, an example of the operating principle of the autochanger will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing a state (steady state) during a sealing operation in an automatic changer, and FIG. 2 is a cross-sectional view showing a state in which the stage is rotated to switch to a roll around which an adhesive tape (B) is wound. FIG.
In FIG. 1, a roll 1 of an adhesive tape (A) and a roll 2 of an adhesive tape (B) are set on a turntable (stage) 4. The roll 1 of the pressure-sensitive adhesive tape (A) is the roll currently in operation, and the pressure-sensitive adhesive tape (A) 5 is drawn out from the tape feed-out port 6 of the autochanger in the direction of the can sealer and supplied. The roll 2 of the adhesive tape (B) is a standby tape roll, and when the remaining amount of the adhesive tape (A) becomes smaller than a predetermined amount, the stage starts to rotate counterclockwise as shown in FIG. The outer peripheral edge 7 of the roll 2 of the adhesive tape (B) rotates to a position where it comes into contact with the adhesive layer 5 'in the partially enlarged sectional view of the adhesive tape (A).
In FIG. 2, when the outer peripheral edge 7 of the roll 2 of the adhesive tape (B) comes into contact with the adhesive layer 5 'of the adhesive tape (A), the pressing roll 8 approaches the outer peripheral edge 7 of the roll 2 of the adhesive tape (B). And press the adhesive tape (A) 5 against the roll 2.
When the adhesive tape (A) is fed in the direction of the can sealer, the roll 2 of the adhesive tape (B) rotates clockwise in conjunction with this. By this rotation, the leading end portion 9 of the adhesive tape (B) wound up to the outer peripheral edge of the roll 2 comes into contact with the adhesive layer 5 ′ of the adhesive tape (A), and with the advance of the adhesive tape (A). The adhesive tape (B) 10 is pulled out.
After the adhesive tape (B) is pulled out, only the adhesive tape (A) is cut by the cutter 11 at, for example, a position above the pressing roll 8. After cutting the pressure-sensitive adhesive tape (A), the pressing roll 8 moves away from the pressure-sensitive adhesive tape (B), returns to its original position, and returns to a steady state as shown in FIG. In this state, the tape switching operation is completed, and the adhesive tape (B) is fed out from the roll 2 of the adhesive tape (B), and the can sealing operation can be continued.
The above is an example of the operation principle of the autochanger.

  In an adhesive tape for can sealing applied to an autochanger, a portion having an adhesive force of 0 (non-adhesive state) is normally formed at the leading end of the tape. With this design, when the adhesive tape is switched, the leading end portion of the standby adhesive tape can be extended along with the adhesive surface of the adhesive tape in use. As a specific mode for making the adhesive surface non-adhesive, a non-adhesive base such as a plastic film, paper, or metal foil is attached to the adhesive surface at the leading end of the adhesive tape (usually about 20 to 30 mm from the end of the adhesive tape). Adhesive strength is eliminated by bonding materials (lead tape).

However, if a lead tape such as a plastic film is temporarily attached to the leading end of the payout, the leading end of the payout may be curled. When curling occurs at the leading end of the feeding, the adhesive tape is not smoothly switched by the autochanger, and a troublesome situation occurs in which the sealing operation is interrupted.
That is, as shown in FIG. 1, in the conventional adhesive tape (B), the leading end portion 9 to which the lead tape 12 (see FIG. 3) is attached may be curled outward. When the stage rotates and comes into contact with the pressure-sensitive adhesive layer of the pressure-sensitive adhesive tape (A), the pressure-sensitive adhesive tape (B) comes into contact with the leading end portion in a curled state. The state of the contact portion at this time is shown in an enlarged scale in FIG. As is clear from the partially enlarged view of FIG. 3A, when the adhesive tape (A) 5 is pulled as it is in the direction of the can sealer, the leading end 9 of the adhesive tape (B) 10 is bent and peeled off at this portion. Power will be created. That is, the pressure-sensitive adhesive tape (A) and the pressure-sensitive adhesive tape (B) are peeled off without bonding, and the operation of feeding and switching the pressure-sensitive adhesive tape (B) is not smoothly performed, and the sealing operation may be interrupted.

  The present inventors have conducted intensive studies to solve the above-described problems that occur when using the conventional adhesive tape, and as a result, the adhesive force of the adhesive tape is not completely eliminated, but the adhesive tip is not completely eliminated. By keeping the adhesive force of the dispensing tip such that the dispensing tip does not curl outward, in other words, the dispensing tip is on the self-back surface of the adhesive tape, and the dispensing operation is performed at the time of automatic dispensing using an autochanger. It has been found that the above-mentioned problems can be solved by adopting a structure that can be adhered with a weak adhesive force that does not hinder the present invention, and the present invention has been completed.

That is, the pressure-sensitive adhesive tape of the present invention is a pressure-sensitive adhesive tape in which a pressure-sensitive adhesive layer is formed on one surface of a base material and wound into a roll, and a region in which the adhesive force is reduced at one end of the pressure-sensitive adhesive layer. It is characterized by having.
Here, the area in which the adhesive strength is reduced may include a non-adhesive part and an adhesive part.
In addition, the region where the adhesive strength is reduced may be composed of a strong adhesive portion and a weak adhesive portion.
Further, a non-adhesive substrate having a through-hole may be adhered to the region where the adhesive force is reduced, and a part of the adhesive layer may be exposed from the through-hole.
In addition, the area where the adhesive force is reduced is bent at one end so that a part of the pressure-sensitive adhesive layer is exposed from the through-hole of the tape having a through-hole formed in the end area. Can be overlaid with each other.
In addition, a weak adhesive substrate having a through-hole may be adhered to the area where the adhesive strength is reduced, and a part of the adhesive layer may be exposed from the through-hole.
Further, the region where the adhesive strength is reduced can be formed by attaching a weakly adhesive substrate.
Further, the non-adhesive substrate or the weakly-adhesive substrate may have a function of responding to a sensor.
Further, the non-adhesive substrate or the low-adhesive substrate may be formed from a metallic material.
Further, the metal material may be an aluminum foil.
Further, the pressure-sensitive adhesive tape can be used in an automatic attaching device having an autochanger.
The method for producing a pressure-sensitive adhesive tape of the present invention comprises forming an adhesive layer on one surface of a wide base material, winding the adhesive layer in a roll shape, and reducing the adhesive strength of the adhesive layer at the wound end. Is formed and cut to a predetermined width to form a pressure-sensitive adhesive tape.
Here, the area where the adhesive strength is reduced can be formed by attaching a non-adhesive base material having a through-hole or a weak adhesive base material having a through-hole.

  The pressure-sensitive adhesive tape of the present invention has an adhesive force adjusted so that the dispensing tip of the adhesive tape adheres to its own back surface without obstructing automatic switching by the autochanger. No curling occurs. Therefore, the adhesive tape to be used next will wait in a state where the leading end portion is along the outer periphery, and since the adhesive force of the leading end portion is weak, the feeding operation at the time of automatic switching by the auto changer is smooth and. Achieved reliably.

  As described in detail above, if the pressure-sensitive adhesive tape of the present invention is used, even if a sealing operation is performed using an automatic application device, automatic switching of the adhesive tape is smoothly performed, and the operation is not interrupted. Work can be performed efficiently.

BEST MODE FOR CARRYING OUT THE INVENTION

The pressure-sensitive adhesive tape of the present invention has a structure in which the adhesive strength of the adhesive layer portion at the leading end of the feeding is reduced.
The adhesive force of the dispensing tip portion is preferably about 70% or less, particularly preferably about 5 to 40%, of the adhesive force of the adhesive layer other than the tip portion, but the present invention is not limited to this. Not something. If the amount of reduction in the adhesive force at the feeding tip is 70% or less, the switching of the adhesive tape by the automatic changer is performed smoothly. If it is less than 5%, the adhesion of the leading end of the feeding portion to the back surface is not sufficient, and the curling tends to occur.

The embodiment of the leading end of the pressure-sensitive adhesive tape of the present invention will be specifically described below with reference to the drawings.
As shown in FIGS. 4A and 4B, a non-adhesive base material 13 having one or more through-holes is adhered on the adhesive layer 14 'of the dispensing tip 9 which is one end of the pressure-sensitive adhesive tape. Adhesion can be reduced by attaching. In this case, the number of through holes may be one as shown in FIG. 4A, or may be plural as shown in FIG. 4B, and is not particularly limited. Further, the shape and size of the hole are not particularly limited, but, for example, a circle, an ellipse, a triangle, a polygon such as a square, and the like can be appropriately selected. It is preferable that the area is about 2 to 50% of the area of the leading end portion from the viewpoints of curling prevention and easy peeling at the time of feeding.
In addition, a non-adhesive base material 13 having an area that does not cover the entire adhesive layer 14 ′ of the dispensing tip 9 can be attached. Also in such a case, the shape and size of the non-adhesive substrate to be stuck are not particularly limited, and are appropriately selected. For example, as shown in FIG. 4 (c), a plurality of elongated non-adhesive base materials 13 are arranged in parallel in the longitudinal direction of the adhesive tape, or as shown in FIG. 4 (d), perpendicular to the longitudinal direction of the adhesive tape. May be attached in any direction. Alternatively, as shown in FIG. 4 (e), the adhesive force of the leading end portion can be reduced by sticking an appropriate number of non-viscous base materials having an appropriate shape and size, such as a circle. . Even in such a case, the shape, size, number, and the like of the non-adhesive substrate are appropriately selected. Further, as shown in FIG. 4 (f), a U-shaped non-adhesive base material may be drawn out and adhered so that the three end portions of the front end portions become non-adhesive portions.
Examples of the non-adhesive substrate to be used include various plastic films, paper, metal foil, nonwoven fabric, and metal-laminated plastic films. In particular, when a non-adhesive substrate is punched into a form as shown in FIG. 4, a metal laminated plastic film is preferable from the viewpoint of punching workability.

Instead of the non-adhesive base material, the adhesive force may be reduced by feeding out a weakly adhesive base material having an adhesive strength lower than the adhesive strength of the pressure-sensitive adhesive layer and attaching the base material to the tip.
For example, as shown in FIG. 5A, a weakly adhesive base material 15 may be adhered so as to cover the entire surface of the adhesive layer 14 'of the leading end portion 9 of the adhesive tape 14. In such a case, the weak adhesive substrate is attached so that the adhesive layer having weak adhesive force is on the outside, and the weak adhesive force does not curl at the tip of the adhesive tape, and when the tape is switched, it is easy to apply. The adhesive strength is such that it can be peeled off. In such a configuration, since the adhesive tape has an adhesive force over the entire leading end portion, the curl can be more reliably prevented.
As shown in FIG. 5 (b), a weakly-adhesive base material having a through-hole may be fed out and adhered to the tip portion, or as shown in FIG. The base material may be fed out and stuck so that the three end portions of the front end portions become weakly adhesive portions. Even in the latter case, since the adhesive tape can be temporarily fixed at the three ends, curl prevention can be effectively achieved.

  In the present invention, the embodiments shown in FIGS. 4A to 4F can be applied to an embodiment using a weakly adhesive base material. However, in FIGS. 4 (a) to 4 (f), when the weakly adhesive base material 15 is used instead of the non-adhesive base material 13, the size and number of through holes, the shape and number of base materials, and the like are adjusted. There is a need to.

  Examples of the weakly adhesive substrate used include those obtained by forming an adhesive layer having a weak adhesive force on one surface of a substrate such as various plastic films, paper, metal foil, and nonwoven fabric. Alternatively, a weakly-adhesive substrate may be directly applied to the adhesive layer of the adhesive tape to form a weakly-adhesive substrate.

In the present invention, as shown in FIG. 6 (a) or FIG. 6 (b), for example, as shown in FIG. The structure may be bent so as to be exposed (exposed). In FIG. 6A, for example, after forming a through hole having a suitable shape punched in the end region of the tape, the end region where the through hole is formed is bent so that the adhesive layers contact each other. It is formed by bonding. In this case, a part of the pressure-sensitive adhesive layer 14 ′ is exposed on the tape surface (the surface of the base material 14 ″) from the punched through hole, and a region with reduced adhesive force is formed at one end. The shape and size of the through-hole can be appropriately determined so that the adhesive force at one end is within the appropriate range described above. It can be appropriately determined in consideration of forming the portion.
In FIG. 6B, for example, a cut (20) is made in a part of the punched shape, and a cut-out piece (22) is bent inward at a portion (21) left without making this cut, and It is formed by sandwiching the bent piece (22) between the pressure-sensitive adhesive layers and bonding them. Also in this embodiment, a part of the pressure-sensitive adhesive layer 14 ′ is exposed (exposed) on the surface of the base material 14 ″ from the through hole, and a region having reduced adhesive force is formed at one end.

  It is preferable that the non-adhesive substrate or the weakly adhesive substrate itself has a function of responding to a sensor such as an optical sensor or a metal sensor. That is, usually, in the can sealer, at the time of switching the adhesive tape, since the final portion of the adhesive tape that is being fed at the present time and the feeding tip portion of the waiting adhesive tape are sent from the autochanger in a superimposed state, It is necessary to remove the overlapped portion. At this time, if the non-adhesive substrate or the weakly-adhesive substrate attached to the feeding tip has a function to respond to the sensor, attach various sensors such as an optical sensor or a metal sensor to the can sealer. By doing so, the overlapped portion can be automatically detected and removed.

  Here, "having a function of responding to the sensor" means that the base material attached to the feeding tip is sensed by various sensors such as an optical sensor and a metal sensor, and any sensor capable of sensing the sensor. For example, the specific mode is not particularly limited. The specific mode can be appropriately determined according to the type of the sensor. For example, in the case of an optical sensor that detects the presence of the adhesive tape by transmitted light transmitted through the adhesive tape, a base material of a material having a function of blocking transmitted light may be used. Examples of such a material include a sheet or film material made of a metal material such as an aluminum foil and a stainless steel foil, and a material obtained by laminating a metal and a film.

  The pressure-sensitive adhesive tape of the present invention comprises a pressure-sensitive adhesive layer and a substrate. The material of the substrate to be used is not particularly limited, and various materials such as plastic films, paper, and metal foil, which have been conventionally used as the substrate of the pressure-sensitive adhesive tape, may be appropriately selected and used. Can be. The pressure-sensitive adhesive used in the present invention is not particularly limited, and a known pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, or a silicone-based pressure-sensitive adhesive can be appropriately selected and used. .

  The pressure-sensitive adhesive tape of the present invention is obtained by applying a pressure-sensitive adhesive to one surface of a base material, drying the coated material, winding it around a core, and winding it into a roll to form a wide-width material pressure-sensitive adhesive tape (see FIG. 7). create. Next, after a non-adhesive base material or a weakly-adhesive base material (lead tape) 17 is adhered to the leading end portion 9 in FIG. 7, it is cut into an arbitrary predetermined width 18 by a rotary blade or the like to form an adhesive tape. . FIG. 7 shows a state of being wound into a roll before cutting. In FIG. 7, reference numeral 19 denotes a cutting line, and a rotary blade is applied along the cutting line and cut.

  The pressure-sensitive adhesive tape of the present invention can be particularly preferably used as a sealing material for a can seal using an autochanger, but is not limited thereto, and may be used as a general-purpose pressure-sensitive adhesive tape. it can.

Hereinafter, the present invention will be described more specifically with reference to Examples.
Example 1
Using a polyvinyl chloride film having a width of 18 mm as a support (substrate), a natural rubber-based adhesive was applied to one surface of the support to prepare a pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape was wound around a ball core (75φ) in a roll shape (length: 50 m). Next, a polyethylene terephthalate film (length: 20 mm, width: 18 mm, thickness: 50 μm) having a 6 mm-diameter through hole at the center as a non-adhesive base material is adhered to the leading end (length: 20 mm from the end). Thus, a pressure-sensitive adhesive tape of the present invention was produced.
The obtained pressure-sensitive adhesive tape was subjected to an automatic tape switching test using an automatic can sealing machine with an autochanger (“CS-200” manufactured by Nitto Seiki Co., Ltd.). The automatic payout was 100% successful.

Example 2
In Example 1, the adhesive force was changed in the same manner as in Example 1 except that the non-adhesive substrate was changed to an aluminum foil (length: 20 mm, width: 18 mm, thickness: 20 μm) having a through hole having a diameter of 6 mm at the center. A pressure-sensitive adhesive tape having a reduced area was produced.
Using the obtained pressure-sensitive adhesive tape, an automatic tape switching test was performed in the same manner as in Example 1, and the automatic switching to the standby tape was 100% successful.
Also, the presence of the aluminum foil was detected by the optical sensor, and the tape before switching (the current feeding tape) could be automatically cut.

Example 3
An 18 mm wide polypropylene film was used as a support (substrate), and an acrylic pressure-sensitive adhesive was applied to one surface of the support to prepare a pressure-sensitive adhesive tape. The pressure-sensitive adhesive tape was wound around a ball core (75φ) in a roll shape (length: 50 m). Next, an aluminum foil (length: 20 mm, width: 18 mm, thickness: 50 μm) having a through-hole having a diameter of 6 mm at the center as a non-adhesive base material is adhered to the leading end (length: 20 mm from the leading end). A pressure-sensitive adhesive tape having a region where the adhesive force was reduced was produced.
The obtained pressure-sensitive adhesive tape was subjected to an automatic tape switching test using an automatic can sealing machine with an autochanger (“CS-4500” manufactured by Nitto Seiki Co., Ltd.). Automatic switching was 100% successful.
Also, the presence of the aluminum foil was detected by the optical sensor, and the tape before switching (the current feeding tape) could be automatically cut.

Comparative Example 1
In Example 1, a non-adhesive polyethylene terephthalate film (length: 20 mm, width: 18 mm, thickness: 50 μm) was stuck instead of the non-adhesive base material, and a pressure-sensitive adhesive tape was used. A pressure-sensitive adhesive tape was prepared.
Next, an automatic tape switching test was performed using the obtained pressure-sensitive adhesive tape in the same manner as in Example 1, and the success rate of automatic switching of the standby tape was 60%.

Comparative Example 2
In Example 3, instead of the non-adhesive base material, a non-perforated aluminum foil (length: 20 mm, width: 18 mm, thickness: 20 μm) was applied to form a pressure-sensitive adhesive tape having a non-adhesive feeding tip. Produced.
Next, an automatic tape switching test was performed using the obtained pressure-sensitive adhesive tape in the same manner as in Example 1, and the success rate of automatic switching of the standby tape was 10%.

Example 4
In Example 1, in place of the non-adhesive substrate, one side of a polyethylene terephthalate film (length: 20 mm, width: 18 mm, thickness: 50 μm) has an adhesive strength of about 30% of the adhesive strength of the adhesive layer of the pressure-sensitive adhesive tape. Of the present invention in the same manner as in Example 1 except that a weakly adhesive substrate coated with a natural rubber-based adhesive having A pressure-sensitive adhesive tape was prepared.
The obtained pressure-sensitive adhesive tape was subjected to an automatic tape switching test using an automatic can sealer equipped with an autochanger (“CS-200” manufactured by Nitto Seiki Co., Ltd.). The payout was 100% successful.

Example 5
A pressure-sensitive adhesive tape was produced in the same manner as in Example 1. After forming a through hole with a diameter of 6 mm centered on the 10 mm length part from the tip of the obtained pressure sensitive adhesive tape, the pressure sensitive adhesive is overlapped with each other at a length of 20 mm from the tip. The pressure-sensitive adhesive tape of the present invention was obtained by bending and bonding the adhesive tape to form a region where the adhesive force was reduced at the front end (20 mm from the front end). An automatic tape switching test was performed using the obtained pressure-sensitive adhesive tape in the same manner as in Example 1. As a result, the automatic switching from the current feeding tape to the standby tape was 100% successful.

FIG. 4 is a schematic cross-sectional view showing a state (steady state) during a sealing operation in the auto changer. FIG. 9 is a schematic cross-sectional view showing a state in which the stage rotates and the next adhesive tape enters the operation in the sealing operation in the automatic changer. It is an expanded sectional view showing the state where the feeding tip part of adhesive tape (B) was in contact with the adhesive layer of adhesive tape (A), and (a) was bent at the feeding tip part of adhesive tape (B). It is sectional drawing of a state, (b) is sectional drawing of the state which the delivery front-end | tip part of the adhesive tape (B) was delivered in the normal state. (A)-(f) is a partial perspective view which shows one aspect of the delivery front-end | tip part of the pressure-sensitive adhesive tape of this invention. (A)-(c) is a partial perspective view which shows one aspect of the leading-out part of the pressure-sensitive adhesive tape of the present invention. (A)-(b) is a partial perspective view showing one mode of the leading end of the pressure-sensitive adhesive tape of the present invention. It is a perspective view which shows the pressure-sensitive adhesive tape of a wide raw material.

Explanation of reference numerals

1 roll of adhesive tape (A) 2 roll of adhesive tape (B) 4 turntable (stage)
5 Adhesive tape (A)
5 'Adhesive layer 6 Auto changer tape feed-out port 7 Outer rim of roll 1 8 Pressing roll 9 Feeding tip 10 Adhesive tape (B)
DESCRIPTION OF SYMBOLS 11 Cutter 12 Lead tape 13 Non-adhesive base material 14 Adhesive tape 14 'Adhesive layer 14 "Base material 15 Weak adhesive base material 16 Wide raw material pressure-sensitive adhesive tape 17 Lead tape 18 Predetermined width 19 Cutting line 20 Cut 21 The part which was left without a cut 22 pieces

Claims (13)

A pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer formed on one surface of a substrate and wound in a roll, wherein the pressure-sensitive adhesive tape has an area at one end of the pressure-sensitive adhesive layer with reduced adhesive strength. . The pressure-sensitive adhesive tape according to claim 1, wherein the region in which the adhesive force is reduced includes a non-adhesive portion and an adhesive portion. The pressure-sensitive adhesive tape according to claim 1, wherein the region in which the adhesive strength is reduced includes a strong adhesive portion and a weak adhesive portion. The non-adhesive substrate having a through hole is adhered to the area where the adhesive force is reduced, and a part of the adhesive layer is exposed from the through hole. Or the pressure-sensitive adhesive tape according to any of 2. 2. The area in which the adhesive force is reduced, a weakly adhesive substrate having a through hole is adhered, and a part of the adhesive layer is exposed from the through hole. Or the pressure-sensitive adhesive tape according to any one of 3. The area where the adhesive force is reduced is bent at an end so that a part of the adhesive layer is exposed from the through hole of the tape having a through hole formed at an end area, and the adhesive at one end is formed. 3. The pressure-sensitive adhesive tape according to claim 1, wherein the agent layers are overlapped with each other. 4. 2. The pressure-sensitive adhesive tape according to claim 1, wherein the region in which the adhesive force is reduced is formed by attaching a weakly adhesive substrate. 3. The pressure-sensitive adhesive tape according to any one of claims 2 to 7, wherein the non-tacky substrate or the weakly-adhesive substrate has a function of responding to a sensor. The pressure-sensitive adhesive tape according to any one of claims 2 to 8, wherein the non-tacky substrate or the weakly-adhesive substrate is formed from a metallic material. The pressure-sensitive adhesive tape according to claim 9, wherein the metal material is an aluminum foil. A pressure-sensitive adhesive tape, wherein the pressure-sensitive adhesive tape according to any one of claims 1 to 10 is used in an automatic application device equipped with an autochanger. After forming a pressure-sensitive adhesive layer on one surface of a wide base material and winding it into a roll, a pressure-reduced region is formed in the pressure-sensitive adhesive layer at the end of the winding, and cut into a predetermined width to provide a sense of sensitivity. A method for producing a pressure-sensitive adhesive tape, comprising forming a pressure-sensitive adhesive tape. 13. The pressure-sensitive composition according to claim 12, wherein the region in which the adhesive force is reduced is formed by attaching a non-adhesive base material having a through hole or a weak adhesive base material having a through hole. Manufacturing method of adhesive tape.

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