JP5202273B2 - Adhesive tape roll - Google Patents

Description

  The present invention relates to a cleaning adhesive tape roll wound with its adhesive surface facing the front side and a method for manufacturing the same, and more specifically, to improve both the functionality of the adhesive tape and reduce production costs. The present invention relates to an adhesive tape roll production technology.

  An adhesive tape roll for cleaning is used to wrap an adhesive tape with an adhesive surface on one side in multiple turns so that the adhesive surface faces the front side, and attach it to a dedicated jig to cover the floor or other surface. By rolling while making contact with the cleaning surface, dust on the surface to be cleaned is captured.

  Many of the conventional pressure-sensitive adhesive tape rolls are so-called solid-coated pressure-sensitive adhesive tape rolls in which a pressure-sensitive adhesive is applied with a uniform thickness over almost the entire surface of a substrate. Since the solid-coated adhesive tape roll has a large contact area with the floor surface, there is an advantage that dust can be captured over the entire surface.

  On the other hand, since the pressure-sensitive adhesive layer is uniformly formed on the entire surface, when the tape is wound in a roll shape, the tape is hard and cannot follow the fine unevenness on the floor surface flexibly and is small. When stones or the like adhere, there is a problem that the adhesive surface of the surrounding portion floats and the dust capturing power is reduced.

  Therefore, a streaked-type adhesive tape roll that has solved the drawbacks of the solid-coated type adhesive tape roll has been newly developed. That is, for example, as shown in Patent Document 1, a streaked-type pressure-sensitive adhesive tape roll is formed by alternately arranging pressure-sensitive adhesive layers and non-pressure-sensitive adhesive layers along the winding direction of a substrate.

  According to this, since the pressure-sensitive adhesive layer is formed in a streak shape, the portion without the pressure-sensitive adhesive layer becomes a gap and creates cushioning properties. You can catch the garbage on the surface regardless of the size.

  However, the streak-coated adhesive tape roll naturally has a reduced dust trapping capacity because the adhesive is not applied to the entire surface. Therefore, a further improved product of the adhesive tape roll as in Patent Document 2 is provided.

  The pressure-sensitive adhesive tape roll described in Patent Document 2 describes that a pressure-sensitive adhesive layer is formed on the entire surface of a base material, and a weak pressure-sensitive adhesive having a weak adhesion is formed on the pressure-sensitive adhesive layer in a stripe shape. . According to this, by using two strong and weak pressure-sensitive adhesives, a universal pressure-sensitive adhesive tape roll that can be used for carpets and flooring can be obtained.

Japanese Utility Model Publication No. 59-157672 Utility Model Registration No. 2521127

  However, the following problems remain in this adhesive tape roll. In other words, although the problem of sticking to the floor and lack of cushioning properties, which are the disadvantages of solid coating, have been resolved, the weakness of the streaked coating has resulted in the disadvantage of reducing the ability to capture dust at the streaked coating. .

  In addition to this, two types of pressure-sensitive adhesives must be prepared, which increases the material cost. Moreover, since the streaked coating layer is formed on the solid coating layer, two steps are required, and the manufacturing time and cost increase accordingly.

Further, when the pressure-sensitive adhesive tape is wound, since the streaked coating layer is a weak pressure-sensitive adhesive, the retainability between the pressure-sensitive adhesive surface and the release treatment layer on the back surface of the base material is poor, and the tape is easily rewound. Furthermore, the stripe coating layer (weak adhesive layer) may be peeled off from the base layer (strong adhesive material layer) and transferred to the floor surface.

  Accordingly, the present invention has been made to solve the above-described problems, and its purpose is to provide a production technology for an adhesive tape roll that can reduce the amount of adhesive used without deteriorating dust capture performance. There is to do.

In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1, an adhesive tape adhesive surface on one side of the substrate is formed, in the pressure-sensitive adhesive tape roll whose adhesive surface is formed by winding to face the front side, above adhesive side is a first pressure-sensitive adhesive layer of the plurality of provided streaked with a predetermined interval and a predetermined thickness, between each of the first pressure-sensitive adhesive layer, with the same thickness as said first pressure-sensitive adhesive layer, said first A plurality of second pressure-sensitive adhesive layers provided at predetermined intervals along the extending direction of the pressure-sensitive adhesive layer, and the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer are a single And a non-adhesive part to which no adhesive is applied exists between the first adhesive layer and the second adhesive layer .

The invention according to claim 2, Oite to the claim 1, said second adhesive layer is characterized in that is provided so as to contact with a side surface of an adjacent said first adhesive layer.

A third aspect of the invention is characterized in that, in the first or second aspect , the first pressure-sensitive adhesive layer is inclined at a predetermined angle with respect to a feeding direction of the pressure-sensitive adhesive tape.

  According to the present invention, the pressure-sensitive adhesive layer made of a single pressure-sensitive adhesive is used, and the second pressure-sensitive adhesive layer is arranged in a dotted manner between the first pressure-sensitive adhesive layers in which a plurality of the pressure-sensitive adhesive layers are arranged in parallel with each other at a predetermined interval. As a result, the amount of the pressure-sensitive adhesive used can be reduced without reducing the dust trapping power, and the production cost can be reduced.

  Next, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. 1 is a perspective view of an adhesive tape roll according to a first embodiment of the present invention, FIG. 2 is a front view of the adhesive tape of the first embodiment, and FIG. 3 is an enlarged front view in which a part of the adhesive layer is enlarged. 4 is a cross-sectional view taken along line AA of FIG. 2, and FIG. 5 is a modification of the adhesive tape roll. Fig.6 (a) is a schematic diagram of the manufacturing apparatus of the adhesive tape roll of this invention, (b) is a schematic diagram showing the modification of a manufacturing apparatus.

  As shown in FIGS. 1 to 3, this adhesive tape roll 1 has an adhesive tape 2 having a dust removal surface 22 formed on one surface of a tape substrate 21, and the dust removal surface 22 is on the front side (see FIG. 1 is formed by winding in a roll shape along the core 3 so as to face the upper surface side).

  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 winding core 3 is wound without using the winding core 3 may be used. In the present invention, the configuration of the winding core 3 is arbitrary.

  Dry edge portions 24 and 24 as non-adhesive portions are provided at both ends in the width direction across the dust removal surface 22 of the adhesive tape 2, but in the present invention, the dry edge portions 24 and 24 are optional. It is a component.

The tape base material 21 is made of paper, for example , and is provided with a laminate film 23 on the back surface (lower surface in FIG. 1 ) for reinforcing and peeling the tape base material 21 as shown in FIG. In this example, the laminate film 23 is made of polyethylene and is integrally bonded to the back surface of the tape base material 21. The material of the tape base material 21 may be arbitrarily selected according to specifications.

  In the present invention, the laminate film 23 is an optional component, and can be made unnecessary by using a resin film or the like instead of the tape substrate 21 of paper. Also, the laminate film 23 can be omitted by controlling the composition of the pressure-sensitive adhesive.

  The dust removal surface 22 is constructed by the pressure-sensitive adhesive layer 4 formed along the base material 21. The pressure-sensitive adhesive layer 4 is a single pressure-sensitive adhesive formed by uniformly applying a pressure-sensitive adhesive such as SIS (styrene-isoprene-styrene) system along the surface of the tape substrate 21.

The pressure-sensitive adhesive layer 4 includes a plurality of first pressure-sensitive adhesive layers 41 arranged in parallel to each other at a predetermined interval along the length direction ( vertical direction in FIG. 2) of the tape base material 21, and the first pressure-sensitive adhesive layer 41. And a point-like second pressure-sensitive adhesive layer 42 provided in a space formed therebetween. Both the first pressure-sensitive adhesive layer 41 and the second pressure-sensitive adhesive layer 42 are the same pressure-sensitive adhesive.

First pressure-sensitive adhesive layer 41 is formed in a stripe-like towards the end from the beginning of the feeding direction of the tape base 21 (linear), are uniformly coated to a predetermined thickness on the tape substrate 21 . As shown in FIG. 4, in this embodiment, the thickness T of the first pressure-sensitive adhesive layer 41 is 15 μm, but the thickness of the first pressure-sensitive adhesive layer 41 may be arbitrarily designed according to specifications.

  As shown in FIG. 3, in this example, the first pressure-sensitive adhesive layer 41 has a constant width W and is formed in a streak shape from the start end to the end of the tape base material 21. In this example, the first pressure-sensitive adhesive 41 is applied so as to have a width W = 1.5 mm, but the width W of the first pressure-sensitive adhesive layer 41 may be arbitrarily changed according to specifications.

The second pressure-sensitive adhesive layer 42 has a dot shape composed of an inscribed circle in contact with the side surfaces of the adjacent first pressure-sensitive adhesive layers 41, 41, and is provided in large numbers at predetermined intervals along the extending direction of the first pressure-sensitive adhesive layer 41. It has been. In this example, the second adhesive layer 42, that is coated to a substantially the same thickness as the first adhesive layer 41.

  The second pressure-sensitive adhesive layer 42 is an inscribed circle that abuts along the side surface of each first pressure-sensitive adhesive layer 41, that is, has the same diameter D as the interval between the first pressure-sensitive adhesive layers 41. In this example, the second pressure-sensitive adhesive layer 42 has a diameter D = 3.0 mm, but the diameter D may be arbitrarily set according to use, and may be smaller than the interval between the first pressure-sensitive adhesives 41, It can be large.

  In this example, the second pressure-sensitive adhesive layer 42 is formed in a substantially circular shape. However, if the second pressure-sensitive adhesive layer 42 is arranged in a dot-like shape (dot shape) at a predetermined interval between the first pressure-sensitive adhesives 41, the shape is A star shape or a heart shape may be arbitrarily selected according to use.

  In this example, the first pressure-sensitive adhesive layer 41 is provided in parallel along the feeding direction of the tape base material 21, but may be inclined with respect to the feeding direction. That is, as shown in FIG. 5, the first pressure-sensitive adhesive layer 41 is formed to be inclined with respect to the feeding direction of the tape base material 21, and the second pressure-sensitive adhesive layer 42 is provided therebetween. .

  The first pressure-sensitive adhesive layer 41 is provided at an angle such that at least a part of the first pressure-sensitive adhesive layers 41 adjacent to each other overlap each other along the feeding direction in the tape base material 21 for one circumference. Is preferred. According to this, the adhesive surface can be used effectively.

  The adhesive tape 2 is provided with cuts 5 for cutting at predetermined intervals. In this example, the cut 5 is a perforation formed in a direction perpendicular to the winding direction of the pressure-sensitive adhesive tape 2 at an interval that is less than 360 ° in circumferential length. The configuration may be arbitrary.

  Next, an example of the manufacturing method of the adhesive tape roll of this invention is demonstrated. As shown in FIG. 6A, the adhesive tape roll manufacturing apparatus 100 is installed such that a pressure-sensitive adhesive 111 is stored in a reservoir 110 and a part is immersed in the pressure-sensitive adhesive 111 in the reservoir 110. The transfer roll 120 and the press roll 130 arrange | positioned so as to oppose the transfer roll 120 on both sides of the tape base material 21 are included.

  In this example, the pressure-sensitive adhesive 111 is stored in the reservoir 110, and the pressure-sensitive adhesive 111 is supplied to the transfer roll 120 by immersing the transfer roll 120 therein, as shown in FIG. 5B. Alternatively, the guide roll 140 may be brought into contact with the transfer roll 120, and the adhesive 111 may be stored in a space formed between the transfer roll 120 and the guide roll 140.

  In this example, the transfer roll 120 is a so-called gravure roll in which a concave surface 121 is provided by etching on the roll surface. The transfer roll 120 is provided with a squeegee 150 for leveling the adhesive 111 adhering to the transfer roll 120 and removing excess.

  In applying the pressure-sensitive adhesive layer 4, the pressure-sensitive adhesive 111 is filled in the concave surface 121 by rotating the transfer roll 120 immersed in the reservoir 120. When the transfer roll 120 is further rotated, the adhesive 111 is spread over the surface of the transfer roll 120 by the squeegee 150 that is in contact with the end surface of the transfer roll 120, and the excess adhesive 111 that protrudes is removed.

It is supplied so that one surface of the tape base material 21 is in contact with the transfer roll 120 that has passed through the squeegee 150, and the other surface is pressed by the guide roll 130. Thereby, the adhesive 111 applied to the transfer roll 120 is transferred to the tape base material 21, and the first adhesive layer and the second adhesive layer of the adhesive layer 4 are simultaneously formed.

According to this, the thin and uniform first pressure-sensitive adhesive layer 41 and the second pressure-sensitive adhesive layer 42 are formed at the same time along the surface of the tape substrate 21, thereby reducing the coating process and using the pressure-sensitive adhesive. The amount can also be reduced, resulting in a significant reduction in production costs.

The perspective view of the adhesive tape roll which concerns on 1st Embodiment of this invention. The front view of the adhesive tape of 1st Embodiment. The enlarged front view which expanded a part of adhesive layer. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The modification of an adhesive tape roll. (A) The schematic diagram of the manufacturing apparatus of the adhesive tape roll of this invention, (b) The schematic diagram showing the modification of a manufacturing apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Adhesive tape roll 2 Adhesive tape 21 Tape base material 22 Dust removal surface 23 Laminated film 24 Dry edge part 3 Core 4 Adhesive layer 41 1st adhesive layer 42 2nd adhesive layer 5 Break

Claims (3)

In the pressure-sensitive adhesive tape roll formed by winding the pressure-sensitive adhesive tape having the pressure-sensitive adhesive surface formed on one surface of the substrate so that the pressure-sensitive adhesive surface faces the front side,
Above adhesive side includes a first pressure-sensitive adhesive layer of the plurality of provided streaked with a predetermined interval and a predetermined thickness, between each of the first pressure-sensitive adhesive layer, the same as the first pressure-sensitive adhesive layer A plurality of second pressure-sensitive adhesive layers provided in a dotted manner at predetermined intervals along the extending direction of the first pressure-sensitive adhesive layer with a thickness ;
The first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer are composed of a single pressure-sensitive adhesive layer ,
A pressure-sensitive adhesive tape roll, wherein a non-adhesive portion to which no pressure-sensitive adhesive is applied exists between the first pressure-sensitive adhesive layer and the second pressure-sensitive adhesive layer . The pressure-sensitive adhesive tape roll according to claim 1, wherein the second pressure-sensitive adhesive layer is provided so as to contact a side surface of the adjacent first pressure-sensitive adhesive layer. The pressure-sensitive adhesive tape roll according to claim 1 or 2 , wherein the first pressure-sensitive adhesive layer is inclined at a predetermined angle with respect to a feeding direction of the pressure-sensitive adhesive tape.

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