JP5663982B2 - Coreless adhesive tape roll - Google Patents

Description

  The present invention relates to a coreless pressure-sensitive adhesive tape roll in which a pressure-sensitive adhesive tape having one surface easily peeled and the other surface adhesive is wound into a roll.

Known as a linerless type, a non-separator type, and the like, an adhesive tape in which the surface of the adhesive tape is an easily peelable surface is known (see, for example, Patent Document 1).
When such a pressure-sensitive adhesive tape is rolled up, the surface of the pressure-sensitive adhesive tape on the inner peripheral side (easily peelable surface) and the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape on the outer peripheral side come into contact with each other. There is no need to provide it. Therefore, it is useful from the viewpoint of waste reduction, etc., and adhesive tapes for printing labels that are easily peelable so that they can be printed. It is widely distributed as tape.

  Conventionally, when this type of pressure-sensitive adhesive tape is formed into a roll shape, one end side in the longitudinal direction of the pressure-sensitive adhesive tape is attached to a core material (core) made of a paper tube or the like, and then the pressure-sensitive adhesive tape is attached to the core material. The method of winding up was generally used.

However, in the roll-shaped adhesive tape provided with such a core material, one end side in the longitudinal direction of the adhesive tape is affixed to the core material for one round. There was a problem of becoming.
Moreover, since the core material is discarded after the adhesive tape is used, the roll-shaped adhesive tape provided with such a core material is not preferable from the viewpoint of reducing waste.

Further, when such a roll-shaped adhesive tape is set and fed to a label printer, for example, the end of the adhesive tape is attached to the core material, so that it cannot be unwound even if it tries to unwind to the end side.
For this reason, there is a case where a load is applied to the drive system of the label printer forcibly unwinding the end side, or the adhesive tape is torn and the label printer is clogged.

  For such a problem, for example, as disclosed in Patent Document 2, as a roll-shaped adhesive tape that can be smoothly unwound to the end of an adhesive label, there is a coreless adhesive roll tape that does not include a core material. .

The coreless pressure-sensitive adhesive tape roll disclosed in Patent Document 2 is formed into a roll shape by connecting a release mount to one end side of the pressure-sensitive adhesive label and winding up the release mount as a start.
Such a coreless adhesive tape roll is not provided with a core material, and is wound around the peeling mount, so when it is fed to a label printer and unwound to the end side, The release mount is also smoothly unwound following the adhesive tape. Therefore, as in the case of an adhesive tape roll having a core material, problems such as load on the label printer drive system, tearing of the adhesive tape, or clogging of the adhesive tape with the label printer are unlikely to occur. .

JP 2003-15525 A JP 20042333884 A

  However, when manufacturing such a coreless pressure-sensitive adhesive tape roll, the pressure-sensitive adhesive surface of the pressure-sensitive adhesive tape is adhered to the easy-release surface of the pressure-sensitive adhesive backing sheet to connect the pressure-sensitive adhesive tape and the pressure-sensitive adhesive tape, and then the pressure-sensitive adhesive tape is wound from the side of the pressure-sensitive adhesive backing sheet. In such a case, the pressure-sensitive adhesive tape and the release mount are easily displaced at the start of winding, and it is difficult to stably wind the pressure-sensitive adhesive tape into a roll. Therefore, the productivity of the coreless pressure-sensitive adhesive tape roll tends to be insufficient.

      This invention is made | formed in view of the said situation, and makes it a subject to provide the coreless adhesive tape roll which can perform roll-shaped winding stably.

In the coreless pressure-sensitive adhesive tape roll of the present invention, a long pressure-sensitive adhesive tape whose one surface is an easily peelable surface and the other surface is a pressure-sensitive adhesive surface begins to wind a strip-shaped end member connected to one end side in the longitudinal direction of the pressure-sensitive adhesive tape, A coreless pressure-sensitive adhesive tape roll wound with the pressure-sensitive adhesive surface inside,
One surface of the end member consists of a non-peelable region formed on one end side in the longitudinal direction and a peelable region other than the non-peelable region,
The pressure-sensitive adhesive surface on the one end side of the pressure-sensitive adhesive tape covers the entire surface of the non-peelable region of the end member, and on the one surface of the end member so that at least a part of the peelable region is exposed. Stick and connect
The end member constitutes at least the innermost circumference of the coreless adhesive tape roll.
The adhesive tape may be formed with a plurality of splitting lines for dividing the adhesive tape in the longitudinal direction. In that case, one end in the longitudinal direction of the end member is the most end of the adhesive tape. It is preferable that it coincides with the position of the planned dividing line formed on the side or located on the one end side of the planned dividing line formed on the most end side of the adhesive tape.

    According to the coreless pressure-sensitive adhesive tape roll of the present invention, roll-shaped winding can be stably performed.

It is a perspective view which shows roughly an example of the coreless adhesive tape roll of this invention. It is a side view which expands and shows the winding start end side of the coreless adhesive tape roll of FIG. 1, Comprising: (a) The state before starting winding, and (b) The state when it starts winding. It is a perspective view of the end member which the coreless adhesive tape roll of FIG. 1 comprises. It is a side view which expands and shows another example of the winding start end side of a coreless adhesive tape roll. It is a perspective view which shows roughly another example of the coreless adhesive tape roll of this invention. It is a side view which gives four examples ((a)-(d)) about the form of the winding start end side of the coreless adhesive tape roll of FIG.

Hereinafter, the present invention will be described in detail.
FIG. 1 is a perspective view schematically showing an example of a coreless pressure-sensitive adhesive tape roll of the present invention (hereinafter sometimes simply referred to as a coreless roll). 2 is an enlarged side view showing the winding start end side of the coreless roll of FIG. 1, and shows a state before starting winding (a) and a state when starting winding (b). FIG. 3 is a perspective view showing an end member included in the coreless roll of FIG. 1.
The coreless roll 10 of this example is a long adhesive tape 20 whose one surface is an easily peelable surface 21 and the other surface is an adhesive surface 22, and is wound in a roll shape with the adhesive surface 22 inside. A strip-shaped end member 30 is connected to one end (winding start end) 23 side in the longitudinal direction of the adhesive tape 20.

The pressure-sensitive adhesive tape 20 of this example includes a long tape-like base material, one surface of which is an easily peelable surface 21 which is peeled, and the other surface is a pressure-sensitive adhesive surface 22 having a pressure-sensitive adhesive layer.
As the tape-shaped substrate, a known tape-shaped substrate used in an adhesive tape can be used. For example, paper, a resin film, a metal film, a laminate of these, and the like can be given.
The release treatment can be performed by a method of applying a known release agent such as a silicone release agent.
Moreover, the well-known adhesive used in an adhesive tape can also be used for formation of an adhesive layer without a restriction | limiting. Examples of the adhesive include natural rubber-based, rosin-based resins and derivatives thereof, and acrylic resins.

The end member 30 in this example is a band-like object having a length L (= L ₁ + L ₂ ) having the same width as that of the adhesive tape 20, and one surface 31 thereof is a length L formed on the one end 34 side in the longitudinal direction. ₁ non-peelable region 32 and a peelable region 33 having a length L ₂ which is a portion other than the non-peelable region 32. A boundary B between the non-peelable region 32 and the peelable region 33 is along the short direction of the end member 30. In this example, L ₁ <L ₂ is satisfied.

The end member 30 in this example has a belt-like base material, and the entire surface up to the position of the other end 35 to the length L ₂ is peeled on one surface 31 to form a peelable region 33. On the other hand, the remaining portion, i.e., the portion up to the position of one end 34 to the length L ₁ in this example as it is exposed first surface of the strip-like base material, and has a non-peelable area 32 which has not been release-treated . The non-peelable region 32 may be a region formed by subjecting the base material to a peel treatment and then reducing its peelability by a known method.
The other surface 36 of the end member 30 may be a surface in which the other surface of the belt-like base material is exposed as it is, and a special treatment such as a peeling treatment is unnecessary. However, from the viewpoint of design properties, characters, designs, etc. May be printed.

  Examples of the belt-like base material that can be used as a base material for separators of adhesive tapes 20 and the like include, for example, paper, resin films, metal films, laminates thereof, and the like. The method of coating known release agents, such as these, is mentioned.

In the coreless roll 10, the pressure-sensitive adhesive tape 20 and the end member 30 are arranged at one end (winding start end) 23 side in the longitudinal direction of the pressure-sensitive adhesive tape 20. Are connected to each other so that their longitudinal directions coincide with each other and there is no shift in the width direction.
In this example, the adhesive surface 22 on the one end 23 side in the longitudinal direction of the adhesive tape 20 covers the entire non-peelable region 32 of the end member 30 and does not cover the peelable region 33. It is overlapped and connected to the surface 31 side. That is, one end 23 in the longitudinal direction of the adhesive tape 20 is disposed so as to coincide with the boundary B between the non-peelable region 32 and the peelable region 33 in the end member 30.
Then, as shown in FIG. 2 (b), the winder starts so that the other end 35 of the end member 30 starts to be wound so that the one surface 31 side of the end member 30 is the outer peripheral side and the other surface 36 side is the inner peripheral side. And is formed into a roll shape.

Here, the winding is performed with an inner diameter (winding diameter) r such that the end member 30 constitutes at least the innermost circumference of the coreless roll 10. That is, the inner diameter r of the coreless roll 10 and the length L of the end member 30 satisfy the relationship L ≧ rπ. In the illustrated example, L = rπ.
When the relationship of L ≧ rπ is satisfied, a portion where the adhesive surface 22 of the adhesive tape 20 is exposed on the innermost peripheral surface of the coreless roll 10 does not occur. If L <rπ, the adhesive surface of the adhesive tape is exposed on the innermost peripheral surface of the coreless roll 10, and the exposed adhesive tape becomes unusable due to adhesion of dust and dirt.

 Such a coreless roll 10 is effective from the viewpoint of waste reduction because it has a strip-shaped end member 30 at the beginning of winding of the adhesive tape 20 and does not include a core material such as a paper tube. . Further, when this is fed to, for example, a label printer and is about to be unwound to the end (winding start end) side of the adhesive tape 20, the end member 30 is smoothly unwound following the adhesive tape 20. Therefore, there is no inconvenience that a load is applied to the drive system of the label printer at the time of unwinding on the end side, the adhesive tape 20 is torn or the label printer is clogged, as in the case where the core is provided.

In this example, the strip-shaped end member 30 is not the one having the peelable region 33 formed on the entire surface 31 but the one having the non-peelable region 32 formed on the one end 34 side in the longitudinal direction. ing. The adhesive surface 22 on the one end 23 side of the adhesive tape 20 is adhered and connected so as to cover the entire non-peelable region 32 of the end member 30.
Therefore, the adhesive surface 22 on one end side of the adhesive tape 20 adheres sufficiently to the end member 30 because it adheres to the non-peelable region 32 instead of the peelable region 33 of the end member 30. Therefore, when the pressure-sensitive adhesive tape 20 is started to be rolled up during the production of the coreless roll 10, the pressure-sensitive adhesive tape 20 and the end member 30 are sufficiently adhered to each other without being displaced, and the pressure-sensitive adhesive tape 20 is attached to the end member 30 side. Can be stably wound into a roll.

Moreover, since not only the non-peelable region 32 but also the peelable region 33 is formed on the one surface 31 of the end member 30, even in the case of the coreless roll 10 having a relatively large inner diameter r, it cannot be used in actual use. The length of the adhesive tape 20 can also be suppressed to be short.
That is, the part of the adhesive tape 20 adhered to the non-peelable region 32 cannot be peeled from the end member 30 and cannot be used as the adhesive tape 20 thereafter. On the other hand, when winding with a relatively large inner diameter r, the length L of the end member 30 needs to be increased to satisfy the relationship L ≧ rπ. In such a case, assuming that one surface of the end member is composed of only the non-peelable region, the entire adhesive tape adhered to the end member 30 cannot be peeled and is wasted.
On the other hand, the part of the adhesive tape 20 that adheres to the peelable region 33 can be easily peeled off from the peelable region 33 at the time of use and can be used without any problem. Therefore, the peelable region 33 is formed on the end member 30. Thus, even when the length of the end member 30 is increased in order to wind up with a relatively large inner diameter r, the length of the adhesive tape 20 that cannot be used can be reduced.

In this example, the adhesive surface 22 on the one end 23 side in the longitudinal direction of the adhesive tape 20 covers the entire non-peelable region 32 of the end member 30 and does not cover the peelable region 33. It is overlapped and connected to the surface 31 side. However, as long as the adhesive surface 22 on the one end 23 side in the longitudinal direction of the adhesive tape 20 covers the entire non-peelable region 32, it extends to a part of the peelable region 33 as shown in FIG. And may be sticky. By extending in this way, the non-peelable region 32 near the boundary B between the peelable region 33 and the non-peelable region 32 is surely covered, so that the non-peelable region 32 near the boundary B is slightly exposed. Therefore, it is possible to avoid the risk that the adhesive surface 22 of the adhesive tape 20 disposed on the outer periphery of the adhesive tape sticks to the portion due to winding.
That is, the adhesive surface 22 on the one end 23 side of the adhesive tape 20 covers the entire non-peelable region 32 of the end member 30 and adheres to the end member 30 so that at least a part of the peelable region 33 is exposed. If you do.
However, although the part of the adhesive tape 20 extending to the peelable region 33 side can be peeled from the peelable region 33, it is actually assumed that it is discarded as an end material together with the end member 30. From this point, from the viewpoint of further reducing the length of the pressure-sensitive adhesive tape 20 that is wasted, the end 23 in the longitudinal direction of the pressure-sensitive adhesive tape 20 coincides with the boundary B and does not cover the peelable region 33. preferable.

As shown in FIG. 5, the adhesive tape 20 may be formed with a plurality of planned dividing lines 24 for dividing the adhesive tape 20 in the longitudinal direction.
The planned dividing line 24 may be an easy-to-separate line formed so that it can be easily separated without using a cutting tool such as a cutter or scissors, such as a perforation. As in the case of the guide line, the guide line may be used as a mark when cutting with a cutting tool.
In addition, the surface (easy peeling surface) 21 of the adhesive tape 20 may be provided with predetermined characters / designs in advance.

Thus, as for the adhesive tape 20 in which the parting schedule line 24 is formed in this way, the part between the adjacent parting schedule lines 24 is normally used as one adhesive label. In that case, as shown in FIG. 6, the connecting portion between the adhesive tape 20 and the end member 30 is a parting planned line in which one end 34 in the longitudinal direction of the end member 30 is formed on the most end 23 side of the adhesive tape 20. 24 (FIGS. 6A and 6B), or located closer to the one end 23 side of the adhesive tape 20 than the planned dividing line 24 formed on the one end 23 side of the adhesive tape 20 ( 6 (c) and (d)) are preferred. In such a case, the pressure-sensitive adhesive label that cannot be peeled from the non-peelable region 32 and cannot be used can be suppressed to only one sheet.
6B and 6D, the adhesive surface 22 on the one end 23 side in the longitudinal direction of the adhesive tape 20 not only covers the entire non-peelable region 32 but also part of the peelable region 33. 6 (a) and 6 (c) show that the adhesive surface 22 on the one end 23 side in the longitudinal direction of the adhesive tape 20 covers and adheres only to the non-peelable region 32. It is a form.

As described above, in such a coreless roll 10, as the end member 30, the peelable region 33 is not formed on the entire surface, but the non-peelable region 32 is provided on the one end 34 side in the longitudinal direction. The adhesive surface 22 on the one end 23 side of the adhesive tape 20 is sufficiently adhered to the non-peelable region 32.
Therefore, when the coreless roll 10 is manufactured, when the pressure-sensitive adhesive tape 20 starts to be rolled up, the pressure-sensitive adhesive tape 20 and the end member 30 are not displaced, and the pressure-sensitive adhesive tape 20 is rolled from the end member 30 side. It can be wound up stably. Therefore, the productivity of the coreless roll 10 is very excellent.
Moreover, since the peelable region 33 is also formed on the end member 30, the length of the adhesive tape 20 that is wasted can be reduced even when the end member 30 is wound with a relatively large inner diameter r.

  Such a coreless roll 10 is assumed to be used in a label printer or the like, and is used for a printing label in which the easy-release surface 21 of the adhesive tape 20 is formed so as to be printable; Applications used as materials and the like; for example, display labels for displaying package contents, etc., in which predetermined characters / designs are applied to the easily peelable surface 21 in advance.

10 Coreless adhesive tape roll 20 Adhesive tape 21 One side of the adhesive tape (easy peeling surface)
22 Other side of adhesive tape (adhesive side)
23 One end 24 in the longitudinal direction of the adhesive tape 24 Scheduled dividing line 30 of the adhesive tape 30 End member 31 One surface 32 of the end member Non-peelable region 33 of the end member Removable region 34 of the end member One end 35 of the end member End of the end member

Claims (4)

Adhesive tape long the other surface is an adhesive surface at one side peelable surface, starting winding the strip-shaped end members connected to one longitudinal end of the adhesive tape, wound up by the adhesive surface on the inside A coreless adhesive tape roll wound up in a roll by a machine ,
One surface of the end member consists of a non-peelable region formed on one end side in the longitudinal direction and a peelable region other than the non-peelable region,
The pressure-sensitive adhesive surface on the one end side of the pressure-sensitive adhesive tape covers the entire surface of the non-peelable region of the end member, and on the one surface of the end member so that at least a part of the peelable region is exposed. Stick and connect
The said end member comprises the innermost periphery of the said coreless adhesive tape roll, The coreless adhesive tape roll characterized by the above-mentioned. Wherein the adhesive tape, a plurality of division planned line for separating along a direction perpendicular against the adhesive tape in the longitudinal direction of the adhesive tape is formed,
One end of the end member in the longitudinal direction coincides with the position of the planned dividing line formed on the most end side of the adhesive tape, or more than the planned dividing line formed on the most end side of the adhesive tape. The coreless adhesive tape roll according to claim 1, wherein the coreless adhesive tape roll is located on the one end side. Length L of the non-peelable region in the longitudinal direction of the adhesive tape ₁ Is the length L of the peelable region in the longitudinal direction of the adhesive tape. ₂ The coreless pressure-sensitive adhesive tape roll according to claim 1, wherein the coreless pressure-sensitive adhesive tape roll is shorter than the core length. The coreless pressure-sensitive adhesive tape roll according to any one of claims 1 to 3, wherein a character or a pattern is printed on the other surface of the end member.

Images