KR101623822B1 - Adhesive tape roll and method for manufacturing same - Google Patents

Abstract

An object of the present invention is to provide a production technology of an adhesive tape roll which produces a pressure sensitive adhesive layer having a complicated shape at a low cost by using a single pressure sensitive adhesive. The pressure sensitive adhesive layer 4 including the base layer 41 and the columnar convex portions 42 is formed on one side of the tape base material 21 simultaneously in one coating process.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an adhesive tape roll,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning adhesive tape roll wound with an adhesive surface facing outward and, more particularly, to an adhesive tape for cleaning which is provided with an adhesive tape for improving the functionality of the adhesive tape, Roll production technology.

The cleaning adhesive tape roll has a plurality of adhesive tapes each having an adhesive surface formed on one side thereof with its adhesive surface facing outward and attached with a dedicated jig and rolled while being brought into contact with a surface to be cleaned such as a bottom surface , And catch dust on the surface to be cleaned.

Most of the adhesive tape rolls so far are adhesive tape rolls of the so-called wholly painted type in which the adhesive agent is applied with a uniform thickness over substantially the entire surface of the base material. The adhesive tape roll as a whole is advantageous in that dust can be caught by the entire surface because the contact area with the bottom surface is large.

On the other hand, since the pressure-sensitive adhesive layer is uniformly formed on the entire surface, when the tape is wound in the form of a roll, the tape is hard and can not flexibly follow the fine irregularities on the bottom surface. There is a problem that the adhesive surface at the periphery thereof is excited and the trapping force of the dust is lowered.

Thus, an adhesive tape roll of a type painted with stripes in which the drawbacks of the adhesive tape rolls of the entirely painted type are eliminated is newly developed. That is, for example, as shown in Patent Document 1, the adhesive tape roll of the type painted with stripes is formed by alternately arranging the pressure-sensitive adhesive layer and the non-pressure-sensitive adhesive layer in stripes along the winding direction of the substrate.

According to this configuration, since the pressure-sensitive adhesive layer is formed in a stripe shape, the portion free of the pressure-sensitive adhesive layer becomes a void and produces cushioning property. Therefore, it follows that it smoothly follows the minute unevenness of the bottom surface, Can be captured regardless of size.

However, since the pressure-sensitive adhesive tape roll of the stripe-shaped type does not apply the pressure-sensitive adhesive on the entire surface, the attracting force of the dust naturally lowers. Thus, an improved product of the adhesive tape roll as in Patent Document 2 is further provided.

The adhesive tape roll described in Patent Document 2 describes that a pressure-sensitive adhesive layer is formed on the entire surface of a substrate and a weakly pressure-sensitive adhesive having weak adhesiveness is formed in a striped pattern on the pressure-sensitive adhesive layer. This makes it possible to obtain a universal adhesive tape roll which can be used for carpets and floors by using two pressure sensitive adhesives.

Japanese Utility Model Publication S59-157672 Japanese Utility Model Registration No. 2521127 Bulletin

However, the following problems remain in this adhesive tape roll. That is, the drawback of the overall coating, the lack of adherence to the floor or the lack of cushioning, has been resolved, but there is a drawback that the staining of the striped portion weakens the trapping power of the dust on the striped portion.

In addition to this, two types of pressure sensitive adhesives must be prepared, and the material cost is increased. In addition, since a layer painted with stripes is formed on the entire painted layer, two steps are required, and the manufacturing time and cost are increased accordingly.

Further, when the adhesive tape is wound, since the layer painted with stripes is a weakly adhesive agent, the releasability of the peeling layer between the adhesive surface and the back side of the substrate is poor, and the tape is easily rewound. It is also possible that the layer (weakly adhesive layer) painted with stripes peels off from the base layer (strong adhesive layer) and moves to the bottom surface.

DISCLOSURE OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a production technique of a pressure-sensitive adhesive tape roll which is rich in cushioning property by using a single adhesive agent to compensate for the drawbacks of the painted type and the stripe- .

In order to attain the above object, the present invention has the following several features. According to a first aspect of the present invention, there is provided an adhesive tape roll comprising a pressure-sensitive adhesive tape on which a pressure-sensitive adhesive layer having a pressure-sensitive adhesive surface formed on one side of a substrate is wound with its pressure-sensitive adhesive surface facing outward, And is characterized in that a convex portion and / or a concave portion are integrally provided on a part of the single-layer structure which is applied over substantially the entire surface of one side of the base.

According to a second aspect of the present invention, in the first aspect, the convex portion and / or the concave portion is a linear shape continuous along a predetermined direction.

According to a third aspect of the present invention, in the first aspect, the convex portion and / or the concave portion is a point shape.

According to a fourth aspect of the present invention, in the first or third aspect of the present invention, the convex portion and / or the concave portion has a columnar shape, and a plurality of the convex portions and / or the concave portion are provided at predetermined intervals along the width direction of the adhesive tape .

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, the convex portion and / or the concave portion is arranged in a lattice pattern in a plan view.

According to a sixth aspect of the present invention, in the third or fourth aspect of the present invention, the convex portion and / or the concave portion is arranged in a zigzag shape in plan view.

According to a seventh aspect of the present invention, there is provided a pressure-sensitive adhesive sheet according to any one of the first to sixth aspects, wherein when the thickness of the pressure-sensitive adhesive layer is t, the height of the convex portion is T and / > d.

The present invention also includes a method for producing the adhesive tape roll. That is, the invention described in claim 8 is a method for producing an adhesive tape roll in which an adhesive tape on which a pressure-sensitive adhesive layer having an adhesive surface on one side of a substrate is formed is wound so that its adhesive surface faces outward, Is characterized in that the pressure-sensitive adhesive is applied so as to include a convex portion and / or a concave portion having a different thickness on a substantially entire surface of one side of the base material.

According to a ninth aspect of the present invention, in the eighth aspect, the pressure-sensitive adhesive layer including the convex portion and / or the concave portion is coated simultaneously by one coating roller.

The present invention described in claim 10 is characterized in that, in the above-mentioned coating roller, a gravure roll in which a predetermined printing pattern is formed on the roller surface is used.

According to the invention as set forth in claim 1, since the convex portion and / or the concave portion are integrally formed in a part of the pressure-sensitive adhesive layer of the single-layer structure made of a single pressure-sensitive adhesive, it has appropriate cushioning property and good followability to the bottom surface. In addition, since the pressure-sensitive adhesive layer is constituted by the same pressure-sensitive adhesive, there is no deterioration of the pressure-sensitive adhesive force, and dust can be uniformly captured in all the pressure-sensitive adhesive layers.

According to the invention described in Claims 2 and 3, since the convex portion and / or the concave portion is formed in a continuous linear shape or a dot shape, it is possible to select the kind of floor surface such as flooring or carpet, Can be cleaned.

According to the invention described in Claims 4 to 6, the convex portion and / or the concave portion has a columnar shape, and a plurality of the convex portions and / or the concave portions are arranged at predetermined intervals along the width direction of the adhesive tape and are arranged in a lattice shape or a zigzag shape , It is possible to more effectively catch dust on the surface to be cleaned.

According to the invention described in claim 7, when t> T, t> d, when the thickness of the pressure-sensitive adhesive layer is t, the height of the convex portion is T and / or the depth of the concave portion is d, By making the thickness of the layer larger than the height of the convex portion and / or the depth of the concave portion, deterioration of the trapping force can be prevented.

According to the invention described in claims 8 to 10, the pressure application step including the convex part and / or the concave part is formed simultaneously with the coating roller, thereby reducing the coating step. Further, by using a gravure roll in which a predetermined printing pattern is formed on the roller surface as a coating roller, a uniform pressure-sensitive adhesive layer can be formed on the tape base material even in a complicated shape.

1 is a perspective view of an adhesive tape roll according to a first embodiment of the present invention,
2 is a plan view of the adhesive tape of the first embodiment,
3 is a sectional view taken along the line AA in Fig. 2,
4 (a) and 4 (b) are schematic views showing a modification of the convex portion of the adhesive tape of the first embodiment,
5 is a perspective view of an adhesive tape roll according to a second embodiment of the present invention,
6 is a sectional view of the adhesive tape of the second embodiment,
7 is a perspective view of an adhesive tape roll according to a third embodiment of the present invention,
8 is a plan view of the adhesive tape of the third embodiment,
Fig. 9 is a sectional view taken along line BB of Fig. 8,
10 is a schematic view showing a modified example of the adhesive tape of the third embodiment,
Fig. 11 (a) is a schematic view of an apparatus for producing an adhesive tape roll of the present invention, Fig. 11 (b) is a schematic diagram showing a modified example of the production apparatus,
Figs. 12 (a) to 12 (c) are explanatory diagrams for explaining the coating order of the adhesive tape roll,
13 is an explanatory diagram showing a measurement chart of the adhesive force in Examples and Comparative Examples.

Next, an embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited thereto. Fig. 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, Fig. 3 is a sectional view taken along line AA of Fig. 4A and 4B are modifications of the adhesive tape roll of the first embodiment.

Fig. 5 is a perspective view of an adhesive tape roll according to a second embodiment of the present invention, and Fig. 6 is a cross-sectional view of a principal part of the adhesive tape of the second embodiment. Fig. 7 is a perspective view of an adhesive tape roll according to a third embodiment of the present invention, Fig. 8 is a front view of the adhesive tape of the third embodiment, and Fig. 9 is a sectional view taken along line B-B of Fig. 10 is a front view showing a modified example of the adhesive tape according to the third embodiment.

Figs. 11A and 11B are schematic diagrams showing the application form of the pressure-sensitive adhesive of the adhesive tape roll of the present invention, and Figs. 12A to 12C are explanatory views for explaining the application procedure . 13 is a graph comparing the rotational resistance of the adhesive tape roll of the example of the present invention and the comparative example.

1 to 3, this adhesive tape roll 1A has an adhesive tape 2 having a dust receiving surface 22 formed on one surface of a tape base 21, and the dust receiving surface 22 Is wound in a roll shape along the core 3 so as to face the outer side (upper side in Fig. 1).

In this example, a paper core made of paper such as cardboard is used as the core 3, but a synthetic resin core may also be used. It is also possible to adopt a so-called coreless structure in which the core 3 is not used, and the structure of the core 3 in the present invention is arbitrary.

The dry edge portions 24 and 24 as the non-adhered portions are provided at both ends in the width direction of the adhesive tape 2 with the dust receiving surface 22 interposed therebetween. In the present invention, Portions 24 and 24 are optional components.

The tape base material 21 is provided with a laminate film 23 for reinforcing and peeling the tape base material 21, for example, on the back side of paper (lower side in Fig. 2). In this example, the laminate film 23 is integrally attached to the back surface of the polyethylene zero tape base material 21. The material of the tape base 21 may be arbitrarily selected in accordance with the specification.

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 paper base material 21. [ Also, by controlling the composition (composition) of the pressure-sensitive adhesive, the laminate film 23 can be omitted.

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

The pressure-sensitive adhesive layer (4) has a base layer (41) uniformly applied along the tape base (21) to a predetermined thickness. In the first embodiment, the thickness t1 of the base layer 41 is 15 占 퐉. On the upper surface of the base layer 41, a convex portion 42 is integrally formed.

The pressure-sensitive adhesive layer 4 is preferably designed such that t> T when the thickness of the base layer 41 is t and the height of the convex portion 42 is T, more preferably t> 3T As shown in Fig.

According to this, by setting the thickness of the base layer 41 to t and the height of the convex portion 42 to T, t> T, the adhesion of the adhesive tape 2 to the pressure- Can be reduced.

The convex portions 42 have a plurality of dot shapes (dot shapes) formed at predetermined intervals along the width direction (left and right direction in FIG. 2) of the adhesive tape 2. In this embodiment, the convex portions 42 have a diameter (T1): 5 占 퐉.

According to this configuration, since the height T1 of the convex portion 42 is as low as 5 m, not only the base layer 41 contributes to the tackiness more than the convex portion 42 but also the cushioning . Conversely, when the height T1 of the convex portion 42 exceeds 5 占 퐉, it is not preferable because the base layer 41 is hardly brought into contact with the surface to be cleaned, and the adhesive force may decrease.

As shown in Fig. 2, in this example, the convex portions 42 are regularly arranged in a lattice shape at predetermined intervals in the width direction (left-right direction in Fig. 2) and in the winding direction have.

In addition to this, as shown in Fig. 4 (a), they may be arranged in a zigzag shape. 4B, a small convex portion 43 (second convex portion 43) may be arranged so as to fill a space formed between the convex portions 42 arranged in a lattice form . This makes it possible to reliably bring the convex portion into contact with the mounting surface.

The adhesive tape (2) is provided with cutting scales (5) for cutting at predetermined intervals. In this example, the cutting scale 5 is formed by a notching scale formed in a direction perpendicular to the winding direction of the adhesive tape 2 at an interval of less than 360 deg. By the circumferential length. In the present invention, (5) may have any specific configuration.

Next, a second embodiment of the present invention will be described with reference to Fig. 5 and Fig. 6. However, the same reference numerals are given to parts that are the same as or the same as those of the above first embodiment, and a description thereof will be omitted .

As shown in Fig. 5, in the adhesive tape roll 1B of the second embodiment, the pressure-sensitive adhesive layer 4 is formed on one side of the tape base 21. The pressure-sensitive adhesive layer 4 is formed with a base layer 41 formed along the tape base 21 and a plurality of concave portions 44 in which a part of the base layer 41 is recessed.

Here, it is preferable that the pressure-sensitive adhesive layer 4 is designed so that t > d when the thickness of the base layer 41 is t and the depth of the concave portion 44 is d, and more preferably t ≫ 3d.

In this example, the pressure-sensitive adhesive layer 4 is uniformly formed along the tape base material 21 with a thickness of 20 占 퐉. Each concave portion 44 is concave at a predetermined depth from the surface of the pressure-sensitive adhesive layer 4 and is concave in a circular shape having a diameter (φ2) of 3 mm and a depth (d) of 5 μm.

According to this, the basic adhesive force of the adhesive tape 2 acts on the base layer 41 and the depth d of the recessed portion 44 is shallow to 5 占 퐉. Therefore, (Bottom portion) of the dust receptacle 44 also comes into contact with the surface to be cleaned, and dust catchability is good. Conversely, when the depth d of the recess 44 is larger than 5 占 퐉, it is not preferable because the bottom of the recess 44 is difficult to contact with the surface to be cleaned, and the trapping force may decrease.

As shown in Fig. 5, in this example, the depressions 44 remain on the bottom of the depressions 44 and are regularly arranged in a lattice pattern along the width direction and the winding direction of the adhesive tape 2. However, They may be arranged in a staggered configuration as in the first embodiment, or a small recess as shown in Fig. 4 (b) may be further provided.

Next, the adhesive tape roll according to the third embodiment of the present invention will be described with reference to Figs. 7 to 10, and the same or the same parts as those of the first and second embodiments described above are denoted by the same reference numerals And a description thereof will be omitted.

In the pressure-sensitive adhesive tape roll 1C according to the third embodiment, the pressure-sensitive adhesive layer 4 is formed on one side of the tape base material 21 in the same manner as in the above-described respective embodiments. A convex portion 45 is provided at a predetermined interval along the width direction of the tape base material 21 in a part of the pressure-sensitive adhesive layer 4. [ In this example, the pressure-sensitive adhesive layer 4 is uniformly coated so as to have a thickness t2 of 15 占 퐉.

In this third embodiment, the convex portions 45 are formed in a continuous straight line along a direction orthogonal to the winding direction (the up-and-down direction in Fig. 8) of the tape base 21 have. In this example, the convex portion 45 has a width W of 1.5 mm and a height T2 of 5 占 퐉 and is continuous along the winding direction of the tape base 21.

According to this, since the height of the convex portion 45 is as low as 5 占 퐉, not only the base layer 41 contributes greatly to the tackiness but also the cushioning property by the convex portion 45 is obtained. Conversely, when the height of the convex portion 45 exceeds 5 占 퐉, it is not preferable since the base layer 41 is hardly brought into contact with the surface to be cleaned, and the adhesive force may decrease.

In this example, the convex portions 45 are formed linearly in a direction orthogonal to the winding direction of the pressure-sensitive adhesive layer 41, but as shown in Fig. 10, Or may be installed. Further, it may be provided in a spiral shape or a broken line shape, and if it is a continuous convex shape, other shapes are also included. Instead of the convex portion 45, the concave groove may be formed as in the second embodiment.

Next, an example of a method of manufacturing the adhesive tape roll of the present invention will be described with reference to Figs. 11 to 13. Fig. As shown in Fig. 11 (a), the apparatus 100 for manufacturing an adhesive tape roll includes a reservoir 110 in which the adhesive 111 is stored, and a part of the reservoir 110 is immersed in the adhesive 111 of the reservoir 110 And a press roll 130 disposed so as to face the transfer roll 120 with the tape base 21 interposed therebetween.

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. However, The adhesive roll 111 may be stored in a space formed between the transfer roll 120 and the guide roll 140 by bringing the guide roll 140 into contact with the transfer roll 120 as shown in FIG.

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

When the pressure-sensitive adhesive layer 4 is coated, the pressure-sensitive adhesive 111 is filled in the concave surface 121 by rotating the transfer roll 120 locked in the reservoir 120 as shown in Fig. 12 (a).

When the transfer roll 120 is further rotated, the pressure sensitive adhesive 111 spreads evenly in the concave surface 121 by the squeegee 150 contacting the end surface of the transfer roll 120, Excess adhesive 111 is removed.

Along one transfer roll 120 passed through the squeegee 150, one side of the tape base material 21 is contacted and the other side is pressed by the guide roll 130. [ 12 (c), the pressure-sensitive adhesive 111 filled in the concave surface 121 is transferred to the tape base material 21, and the base layer 41 of the pressure-sensitive adhesive layer 4 and the convex (42) are simultaneously formed.

This makes it possible to form a thin and uniform base layer 41 along the surface of the tape base 21 and to simultaneously form the convex portions 42 on the base layer 41, The use amount of the pressure sensitive adhesive can be reduced, and as a result, the production cost can be greatly reduced.

[Example]

Next, specific examples of the present invention will be discussed together with comparative examples. First, an adhesive tape having the pressure-sensitive adhesive layer (4) of Example 1 and Comparative Examples 1 to 6 shown below was prepared on one side of a paper substrate (width 150 mm), and then the adhesive strengths of Examples and Comparative Examples were measured . The adhesive force was measured by adhering an adhesive tape to a stainless steel plate and leaving it for 30 minutes, and then measuring the adhesive strength when the adhesive was gradually peeled from one end to the other end. The results are shown in Fig.

&Quot; Example 1 " Base layer 15 mu m + convex part 5 mu m

≪ Comparative Example 1 >

≪ Comparative Example 2 >

≪ Comparative Example 3 >

≪ Comparative Example 4 >

≪ Comparative Example 5 >

≪ Comparative Example 6 >

According to this, when Comparative Example 1 is used as a reference value, in Comparative Example 2, even when the thickness of the pressure-sensitive adhesive layer is made 1.5 times, the adhesive force is improved only by about 1%, and increasing the amount of the pressure-

In Comparative Example 3, when the thickness of the pressure-sensitive adhesive layer is tripled, the pressure-sensitive adhesive force is greatly improved but the pressure-sensitive adhesive force exceeds 15 N, which is not preferable because the pressure-sensitive adhesive is transferred to the surface to be cleaned.

In Comparative Example 4, the thickness of the pressure-sensitive adhesive layer was doubled, but because the pressure-sensitive adhesive layer was painted with stripes, the overall adhesive force was approximately equal to or less than that of Comparative Example 1.

In Comparative Example 5, the thickness of the pressure-sensitive adhesive layer was 3.5 times, but the adhesive strength was substantially equal to that of Comparative Example 1, and the cushioning property was improved, so that the capturing property was good.

In Comparative Example 6, the pressure-sensitive adhesive layer composed only of the convex portions repeatedly moves upward and downward in point contact with the surface to be cleaned, and the average value of the adhesive force is lower than that of Comparative Example 1. [

On the other hand, in Example 1, since the base layer secures the basic adhesive force, the lower limit value does not fall completely, and the cushioning property is better than that of Example 1, so that the capturing property is improved.

1A to 1B: Adhesive tape roll 2: Adhesive tape
21: tape substrate 22:
23: laminated film 24: dry edge portion
3: core 4: pressure-sensitive adhesive layer
41: base layer 42, 43, 45:
44: concave portion 5: cutting scale

Claims (10)

A pressure-sensitive adhesive tape roll comprising a pressure-sensitive adhesive tape on which a pressure-sensitive adhesive layer having a pressure-sensitive adhesive surface is formed on one side of a base material, the pressure-sensitive adhesive tape being wound so as to face outward,
Wherein the pressure sensitive adhesive layer is a single layer structure comprising a single pressure sensitive adhesive and comprises a base layer uniformly applied to a predetermined thickness along a base material of the tape and a plurality of columnar convex portions integrally formed on the base layer,
The thickness of the base layer is t, and the height of the convex portion is T, t > T,
Wherein the convex portion comprises a first convex portion having a predetermined diameter and a second convex portion having a smaller diameter than the first convex portion,
Wherein the first convex portions are provided on the base layer regularly in a lattice shape at a predetermined interval and the second convex portions are provided so as to fill a space formed between the first convex portions Adhesive tape roll.

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