JP2010031100A - Pressure-sensitive adhesive tape roll and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure-sensitive adhesive tape roll that can be produced at a low cost with a reduced amount of a used pressure-sensitive adhesive without detriment to the refuse-trapping properties. <P>SOLUTION: A non-pressure-sensitive part 42 for exposing the texture of a tape substrate 21 is formed at a part of a pressure-sensitive adhesive layer 4 formed almost all over the surface of one surface of the tape substrate 21 so that the non-pressure-sensitive part 42 is left in the pressure-sensitive adhesive layer 4. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an adhesive tape roll for cleaning wound with an adhesive surface facing the front side, and more particularly to an adhesive tape roll that can be produced at low cost by reducing the amount of adhesive used.

  An adhesive tape roll for cleaning consists of a sheet-like base material with a pressure-sensitive adhesive layer formed on one side, wound in a roll shape so that it faces the front side. The dust on the surface to be cleaned is captured by the adhesive surface by rolling the adhesive tape roll.

  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.

Japanese Utility Model Publication No.59-157672

  However, the following problems remain in this type of adhesive tape roll. That is, the material cost for producing pressure-sensitive adhesive tape rolls such as pulp for base materials and pressure-sensitive adhesive materials has increased due to the recent rapid rise in crude oil prices.

  Therefore, the solid coating type pressure-sensitive adhesive tape roll in which the pressure-sensitive adhesive layer is formed on the entire surface of the base material has a high material cost because the adhesive application area is large. On the other hand, the streaked coating type has a non-adhesive part, so it seems that the coating amount is small, but the adhesive layer is thicker than the solid coating in order to compensate for the lowering of the trapping property due to the formation of the non-adhesive part. The material cost is not much different from solid coating.

  Therefore, in order to solve the above-described problems, the present invention is to provide an adhesive tape roll that can be produced at a low cost by reducing the amount of the adhesive used without deteriorating dust capture.

  In order to achieve the above-described object, the present invention has several features described below. The invention according to claim 1 is a pressure-sensitive adhesive tape roll in which a pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer formed on one surface of a substrate is wound in a roll shape with the pressure-sensitive adhesive surface facing outward. The agent layer has a single-layer structure composed of a single adhesive, and is provided over almost the entire surface of one side of the base material, including an unadhesive portion where the background of the base material is exposed. It is said.

  A second aspect of the present invention is characterized in that, in the first aspect, the non-adhesive portion is formed in a dot shape and is scattered in a predetermined arrangement pattern.

  A third aspect of the present invention is characterized in that, in the first aspect, the non-adhesive portion is formed in a continuous linear shape along a predetermined direction.

  A fourth aspect of the present invention is characterized in that, in the first aspect, the non-adhesive portion is a display element composed of a predetermined picture or character.

  In the invention according to claim 5, the adhesive tape is provided with cuts for cutting the adhesive tape for each circumference, and when the adhesive tape is cut along the cuts, The non-adhesive part formed at the tip of the adhesive tape and the non-adhesive part formed on the adhesive tape of the next layer overlapping below the tip of the adhesive tape are set so as not to overlap. It is a feature.

  The present invention includes a method for producing this adhesive tape roll. That is, the invention according to claim 6 is the production of an adhesive tape roll in which an adhesive tape having an adhesive layer formed on one surface of a substrate is wound in a roll shape with the adhesive surface facing outward. In the method, the pressure-sensitive adhesive layer has a single-layer structure composed of a single pressure-sensitive adhesive, and is formed over substantially the entire surface of one side of the base material. The adhesive is applied to the substrate so that an unadhered part where the background of the surface is exposed remains.

  The invention described in claim 7 is the above-mentioned invention according to claim 6, wherein the non-adhesive part is formed by a single application roller composed of a gravure roll having a predetermined print pattern formed on the roller surface. Are formed simultaneously.

  According to the first aspect of the present invention, the adhesive layer is provided over the entire surface on one surface of the substrate so as to include the non-adhesive portion where the background of the substrate is exposed in a part of the adhesive layer. Without reducing the capture performance, the amount of adhesive used can be reduced, and production can be performed at low cost.

  According to invention of Claim 2 and 3, a non-adhesion part is formed in dot shape, many are scattered by a predetermined arrangement pattern, or a non-adhesion part is made into the continuous linear form along a predetermined direction. By forming, it is possible to reliably capture dust on the floor surface while reducing the amount of adhesive used.

  According to the invention described in claim 4, the non-adhesive part is a display element made up of a predetermined pattern or character, so that the user is informed of the usage method, caution, etc. using the non-adhesive part. Printing costs can be saved.

  According to the invention described in claim 5, when the adhesive tape is cut along a cut provided substantially every circumferential length of the adhesive tape, the non-adhesive portion formed at the tip of the adhesive tape, and the adhesive tape By setting so as not to overlap the non-adhesive portion formed on the adhesive tape of the next layer that overlaps under the tip of the tape, it becomes easy to grasp the position of the tape end portion, and it is easy to turn.

  According to invention of Claim 6, the usage-amount of an adhesive by applying an adhesive to a base material so that the non-adhesion part which the background of a base material exposes in a part of adhesive layer may remain. Can be manufactured at a lower cost.

  According to the seventh aspect of the present invention, the adhesive layer and the non-adhesive portion are simultaneously formed by one coating roller made of a gravure roll on which a predetermined print pattern is formed on the roller surface. By this, the adhesive layer provided with the non-adhesion part can be formed in 1 process, and manufacturing cost can be suppressed more.

  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 the first embodiment of the present invention, FIG. 2 is a partial plan view of the adhesive tape roll of the first embodiment, and FIG. 3 is shown in FIG. It is an AA line sectional view and a partial enlarged view. FIG. 4 is a plan view showing a modification in which the arrangement pattern of the non-adhesive portions of the adhesive tape roll is changed, and FIG. 5 is a front view of the adhesive tape roll according to the second embodiment. FIG. 6 is a graph showing the relationship between the rotational resistance value and the pressure-sensitive adhesive layer thickness, and FIGS. 7A and 7B are a schematic diagram and a modification of the pressure-sensitive adhesive tape roll manufacturing apparatus of the present invention, FIGS. 8A to 8C are explanatory views for explaining the coating procedure of the adhesive tape roll.

  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, for example, paper, and a laminate film 23 for reinforcing and peeling the tape base material 21 is provided on the back surface (lower surface in FIG. 3). 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 layer formed by uniformly applying a pressure-sensitive adhesive such as SIS (styrene-isoprene-styrene) along the surface of the tape substrate 21.

  The pressure-sensitive adhesive layer 4 includes a base layer 41 that is uniformly applied to a predetermined thickness along the tape base material 21. In the first embodiment, the thickness t1 of the base layer 41 is 15 μm. A non-adhesive portion 42 is integrally formed on a part of the base layer 41.

  The non-adhesive part 42 is a dot-like (dot shape) formed at a predetermined interval along the width direction (left-right direction in FIG. 2) of the adhesive tape 2 so that the bottom of the base 21 is exposed. Is formed. In this embodiment, it is formed in a cylindrical shape having a diameter of φ1: 3 mm.

  As shown in FIG. 2, in this example, the non-adhesive portions 42 are regularly arranged in a lattice pattern at regular intervals along the width direction (left-right direction in FIG. 2) and the winding direction (up-down direction in FIG. 2). However, as shown in FIG. 4, they may be arranged in a staggered manner.

  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.

  The adhesive tape roll according to the second embodiment of the present invention will be described with reference to FIG. 5, but the basic configuration of the adhesive tape roll 1a of the second embodiment is the same as that of the first embodiment described above. For this reason, parts that are considered to be the same or the same are given the same reference numerals.

  The pressure-sensitive adhesive tape roll 1 a includes a dotted first unadhesive portion 43 that is inclined at a predetermined angle θ along the feeding direction of the pressure-sensitive adhesive tape 2, and a line that is disposed in parallel along the first non-adhesive portion 43. The second unadhered portion 44 is provided so as to remain in the adhesive layer 4.

  The first non-adhesive portion 43 is formed in a dotted line shape in which a large number of dot-like non-adhesive portions are arranged at a constant interval d along an oblique direction. In this example, the first non-adhesive portion 43 has a diameter of 2 0.0 mm point-shaped non-adhesive portions are arranged in a line with a distance d of 2.0 mm.

  The second non-adhesive portion 44 is formed in a linear shape having a width of 1.5 mm, and in this example, is provided so that the angle θ is 30 °. The width and angle θ of the second unadhered portion 44 can be arbitrarily changed according to the specifications.

  The first non-adhesive portion 43 and the second non-adhesive portion 44 are repeatedly arranged at intervals P along the width direction of the adhesive tape 2 (the left-right direction in FIG. 5). In this example, the interval P is 65 mm, but the arrangement interval P may be arbitrarily set according to the specification.

  The first non-adhesive portion 43 and the second non-adhesive portion 44 are formed at the tip of the adhesive tape when the adhesive tape 2 is cut along the cut 5, and the tip of the adhesive tape. It is set so that the non-adhesive parts 43 and 44 formed in the adhesive tape 2 of the next layer that overlaps the upper part of the adhesive tape do not overlap.

  According to this, since each non-adhesive part 43,44 in the overlap part of the edge part of the adhesive tape 2 and the adhesive tape 2 of the next layer does not overlap, the edge part of the adhesive tape 2 of the used outer layer is used. Since it can be easily discriminated, the tape end portion is easily wound.

  Referring to FIG. 5, when the first non-adhesive portion 43 is inclined at an angle θ, the first non-adhesive portion 43 starting from “a” is set to “b” at the tape circumferential length L. Moving. That is, when the distance in the width direction of the adhesive tape 2 at the point b is X, X = tan θ × L.

  On the other hand, when determining the distance P in the feed-out direction of the first non-adhesive part 43 and the second non-adhesive part 44, when P = X, when the roll is formed, the points a 'and b overlap and the turning mouth is Since it becomes difficult to discriminate, it is preferable that P ≠ X.

  Furthermore, since the tape length at the maximum outer diameter of the adhesive tape roll is different from the tape length at the minimum outer diameter, this point may be further taken into consideration so that the points a ′ and b do not overlap. preferable.

  As an example of the specific example, the one-round length Lmax of the adhesive tape at the start of use (at the maximum outer diameter) is Lmax = 60 × 3.14 = 188 mm when the outer diameter is 60 mm, and at the end (minimum) In the case of the core outer diameter 40, the circumference length Lmin of the adhesive tape at the outer diameter is Lmin = 40 × 3.14 = 126 mm.

  When an unadhered part is formed at an angle θ = 30 ° under these conditions, Xmax = tan 30 ° × 188 = 109 mm and Xmin = tan 30 ° × 126 = 73 mm. Therefore, P may be set to 73 mm and 109 mm, other than divisors and multiples thereof.

  The angle θ can be set to an arbitrary angle according to the specification, and an appropriate P value may be determined by looking at the X value according to the angle as described above. However, if the P value is too small, the number of hatched lines and the interval between the non-adhesive portions become too small, and the points a ′ and b tend to overlap, which is not preferable. On the other hand, if the P value is too large, the number of non-adhered portions is not preferable because the number of hatched lines decreases and it becomes difficult to determine the turning mouth. Therefore, it is preferable to set the P value so that the base ends a, a ′, a ″ of the non-adhesive portion are a few places with respect to the tape width W.

  The pressure-sensitive adhesive layer 4 of the pressure-sensitive adhesive tape roll 1a is further provided with an arrow mark 45 indicating the rotation direction of the pressure-sensitive adhesive tape roll 1 and a logo mark 46 such as a trade name or a company name as non-adhesive portions. In this example, the arrow mark 45 and the logo mark 46 are arranged so as to repeat with a predetermined interval between the repeated patterns of the first non-adhesive portion 43 and the second non-adhesive portion 44.

  In this example, the adhesive layer 4 is provided with an arrow mark 45 and a logo mark 46 as non-adhesive parts, but in addition to this, for example, a display part indicating the position of a break, a number such as the remaining length and the number of windings, etc. Various display elements such as may be used as the non-adhesive portion.

  Hereinafter, the correlation between the thickness of the pressure-sensitive adhesive layer 4 of the pressure-sensitive adhesive tape and the area ratio will be described with reference to specific examples. First, the thickness of the pressure-sensitive adhesive layer 4 is changed within a range of 10 to 35 μm on one surface of a paper substrate (width 150 mm) in increments of 5 μm, and the coating area is 40 to 100%. The pressure-sensitive adhesive tape changed within the range was prepared, and the rotational resistance value at that time was measured by the measuring method shown below.

  The rotational resistance value is measured using a dedicated measuring device. As shown in FIG. 9, a jig having an adhesive tape roll 1 attached to the tip and an ohmmeter R integrally attached to the other end is connected from a start point A to an end point B at 725 mm / sec via a driving means (not shown). The load generated between the surface to be cleaned (carpet C) when horizontally moving the distance (800 mm) was set as the rotational resistance value. The measurement results are shown in Table 1.

  Next, based on Table 1, a graph was created with the vertical axis representing the rotational resistance value and the horizontal axis representing the adhesive layer thickness. As shown in FIG. 6, the average rotational resistance value (Dave) of a general cleaning adhesive tape roll is 12 N / mm, and ± 4 N / mm (Dmax, Dmin) before and after that is set as the product allowable range. In this case, the portion represented by smudging in FIG. 6 can be modeled as an available area.

  Therefore, by setting the thickness of the pressure-sensitive adhesive layer and the area of the non-adhesive portion as modeled in FIG. 6, it is possible to produce a pressure-sensitive adhesive tape roll that does not deteriorate the dust capture performance while reducing the amount of pressure-sensitive adhesive used. .

  An example of the manufacturing method of the adhesive tape roll of this invention is demonstrated. As shown in FIG. 7A, 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. 7B. 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.

  The transfer roll 120 is a so-called gravure roll having a concave surface 121 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, as shown in FIG. 8A, 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, as shown in FIG. 8B, the adhesive 111 is spread in the concave surface 121 by the squeegee 150 in contact with the end surface of the transfer roll 120, and an excess portion that protrudes. The adhesive 111 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. As a result, as shown in FIG. 8C, the pressure-sensitive adhesive 111 filled in the concave surface 121 is transferred to the tape base material 21, and the base layer 41 and the convex portion 42 of the pressure-sensitive adhesive layer 4 are formed simultaneously. The

It is a perspective view of the adhesive tape roll which concerns on 1st Embodiment of this invention. It is a partial top view of the adhesive tape roll of 1st Embodiment. It is the sectional view on the AA line shown in FIG. 2, and a partial enlarged view. It is a top view which shows the modification which changed the arrangement pattern of the non-adhesion part of an adhesive tape roll. It is a front view of the adhesive tape roll which concerns on 2nd Embodiment. It is a graph showing the relationship between the rotational resistance value and the adhesive layer thickness, (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. (A)-(c) Explanatory drawing explaining the coating procedure of an adhesive tape roll. Explanatory drawing explaining the measuring method of a rotational resistance value.

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 Base layer 42 Unadhesive part 43 1st non-adhesive part 44 2nd non-adhesive part 45 Arrow Mark 46 Logo mark 5 Cut

Claims (7)

In the pressure-sensitive adhesive tape roll wound in a roll shape with the pressure-sensitive adhesive layer formed on one side of the substrate, the pressure-sensitive adhesive surface facing outward,
The pressure-sensitive adhesive layer has a single-layer structure composed of a single pressure-sensitive adhesive, and is provided over almost the entire surface of one side of the base material, including an unadhesive portion where the background of the base material is exposed. Adhesive tape roll characterized by   The pressure-sensitive adhesive tape roll according to claim 1, wherein the non-adhesive portion is formed in a dot shape and is scattered in a predetermined arrangement pattern.   The pressure-sensitive adhesive tape roll according to claim 1, wherein the non-adhesive portion is formed in a linear shape continuous along a predetermined direction.   The pressure-sensitive adhesive tape roll according to claim 1, wherein the non-adhesive portion is a display element including a predetermined pattern or character.   The adhesive tape is provided with cuts for cutting the adhesive tape at almost every circumference, and is formed at the tip of the adhesive tape when the adhesive tape is cut along the cuts. The non-adhesive part and the non-adhesive part formed in the adhesive tape of the next layer which overlaps under the front-end | tip of the said adhesive tape are set so that it may not overlap. The adhesive tape roll of any one of Claims. In the manufacturing method of the pressure-sensitive adhesive tape roll in which the pressure-sensitive adhesive tape having the pressure-sensitive adhesive layer formed on one surface of the substrate is wound in a roll shape with the pressure-sensitive adhesive surface facing outward,
The pressure-sensitive adhesive layer has a single-layer structure composed of a single pressure-sensitive adhesive, and is formed over substantially the entire surface of one side of the base material, and the background of the base material is formed on a part of the pressure-sensitive adhesive layer. A method for producing a pressure-sensitive adhesive tape roll, comprising applying the pressure-sensitive adhesive to the substrate so that an exposed non-tacky portion remains.   The adhesive layer and the non-adhesive part are simultaneously formed on the non-adhesive part by one coating roller made of a gravure roll on which a predetermined print pattern is formed on the roller surface. Manufacturing method of adhesive tape roll.

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