Sticky Cleaner

Abstract

To provide an adhesive cleaner that can easily peel a sheet end from a roll and can prevent an adhesive sheet from being withdrawn from the roll since an adhesive layer is stuck to a cleaned surface when rolling the roll on the cleaned surface.SOLUTION: In an adhesive cleaner 1A, a strip of adhesive sheet 3 in which an adhesive layer is formed on one surface is wound while allowing the adhesive layer to face outside. In the adhesive sheet 3, a cutoff line 5A that extends from one end side in a width direction WD of the adhesive sheet 3 to the other side and allows a first line non-formation part to be formed in one portion of one end side, a projecting piece formation line 6A for forming a projecting piece 61 that projects downstream D in an opposite side of a winding core 2 of the adhesive sheet 3 in the first line non-formation part, and a bending line 7A that is provided upstream U of an end of the projecting piece 61 and extends in a direction toward upstream U as it turns from one end to the other end of the adhesive sheet are formed.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a sticky cleaner. [Background technology]

[0002] The adhesive cleaner is a cleaner that includes a roll of an adhesive sheet with an adhesive layer formed on one side, wound with the adhesive layer facing outward. With the adhesive layer in contact with the surface to be cleaned, the adhesive cleaner rolls the roll over the surface to be cleaned, causing dust, hair, and other debris from the surface to adhere to the adhesive layer, thereby cleaning the surface to be cleaned. When the adhesive strength of the outermost periphery of the adhesive sheet on the roll is reduced due to the adhesion of debris to the adhesive layer, the sheet end of the adhesive sheet is peeled off from the roll, the outermost periphery of the roll is peeled off, and the outermost periphery of the roll is cut off to expose a new adhesive layer on the roll surface. The adhesive cleaner is used for cleaning in this manner.

[0003] Some of these adhesive cleaners have cut lines at each circumference to cut off the outermost periphery of the roll of adhesive sheet, and some have protruding piece forming lines adjacent to the cut lines to make it easier to peel the sheet ends formed by the cut lines from the roll when cutting.

[0004] For example, Patent Document 1 discloses an adhesive cleaner having a strip-shaped adhesive sheet in which an adhesive layer is formed only in the central portion and excluding both ends in the width direction, a cutting line that crosses the central portion in the width direction, and a protrusion forming line that extends from the end of the cutting line in the downstream direction and in the width direction on the side opposite the core side of the adhesive sheet to form a protrusion that protrudes downstream of the cutting line.

[0005] In the adhesive cleaner described in Patent Document 1, when the outermost peripheral portion of the roll of adhesive sheet is cut off along the cutting line and the protruding piece forming line, a sheet end and an adjacent protruding piece are formed. The protruding piece protrudes downstream from the sheet end, and furthermore, since there is no adhesive layer on its surface, dirt is less likely to adhere to it. Therefore, the protruding piece is easy to peel off from the roll. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 11-155797 Summary of the Invention [Problem to be solved by the invention]

[0007] In an adhesive cleaner, when the outermost peripheral portion of the adhesive sheet on which dirt is adhering is cut off and a relatively clean adhesive layer is exposed, the relatively clean adhesive layer may stick to the surface to be cleaned. In this case, if the roll is rolled in the opposite direction to the winding direction in which the adhesive sheet is wound around the core, the adhesive sheet may be pulled out from the roll one after another from the sheet end toward the upstream side.

[0008] However, in the adhesive cleaner described in Patent Document 1, the protruding pieces simply protrude from the sheet ends. Therefore, although the sheet ends can be easily peeled off from the roll using the protruding pieces, the adhesive sheet cannot be prevented from being pulled out from the roll.

[0009] The present invention has been made to solve the above-mentioned problems, and aims to provide an adhesive cleaner that allows the sheet ends to be easily peeled off from the roll, and prevents the adhesive layer from sticking to the surface to be cleaned when the roll is rolled over the surface to be cleaned, causing the adhesive sheet to be pulled out of the roll. [Means for solving the problem]

[0010] In order to achieve the above object, the adhesive cleaner according to the present invention comprises: An adhesive cleaner in which a strip-shaped adhesive sheet having an adhesive layer formed on one side is rolled up with the adhesive layer facing outward, the adhesive sheet having: a cut line extending from one end side to the other end side in the width direction of the pressure-sensitive adhesive sheet, and a first line-unformed portion being provided in a portion of the one end side; a first protruding piece forming line for forming a first protruding piece in the first line unformed portion, the first protruding piece protruding downstream on the side opposite to the core side of the pressure-sensitive adhesive sheet; a first folding line that is provided upstream of a tip of the first protruding piece and extends in an upstream direction from the one end to the other end of the pressure-sensitive adhesive sheet; is formed, The first protruding piece is characterized in that, by folding back upstream along the first fold line, the tip portion of the first protruding piece is positioned outside the one end of the adhesive sheet and the adhesive layer at the tip portion of the first protruding piece can be attached to the cylindrical end of the roll of the adhesive sheet.

[0011] The cut line is inclined in an upstream direction from the one end to the other end, The first folding line may be provided upstream of the cut line, extend from the one end to the other end of the pressure-sensitive adhesive sheet, and be parallel to the cut line.

[0012] The first folding line may be formed in the first unlined portion and may be located on an extension of the cutting line.

[0013] The cut line is a first line portion that extends from the one end to a middle portion in the width direction of the pressure-sensitive adhesive sheet, including the first line unformed portion, and that inclines in an upstream direction from the one end toward the middle portion; a second line portion extending from the other end of the pressure-sensitive adhesive sheet to the intermediate portion, the second line portion being provided in a portion of the other end, and inclining in an upstream direction from the other end toward the intermediate portion; having The pressure-sensitive adhesive sheet includes: a second protruding piece forming line for forming a second protruding piece protruding downstream in the second line unformed portion; a second folding line provided upstream of the tip of the second protruding piece and extending in an upstream direction from the other end of the pressure-sensitive adhesive sheet toward the middle portion; is formed, The second protruding piece may be folded back upstream along the second fold line, so that a tip portion of the second protruding piece is positioned outside the other end of the adhesive sheet and the adhesive layer at the tip portion of the second protruding piece can be attached to the other cylindrical end of the roll.

[0014] The cut line is a plurality of first notches extending linearly in a first direction from the one end of the pressure-sensitive adhesive sheet toward the other end and arranged apart from each other in the first direction; a plurality of second notches, each having a central portion provided upstream of a gap between adjacent first notches in the first direction, one end portion bent from the central portion toward one of the adjacent first notches in the first direction and adjacent to the one of the first notches, and an other end portion bent from the central portion toward the other of the adjacent first notches in the first direction and adjacent to the other of the first notches; may have the following structure:

[0015] The cut line is a plurality of third notches each having a shape of a line segment inclined in a downstream direction toward the one end of the adhesive sheet, the third notches being arranged from the one end of the adhesive sheet toward a middle portion of the adhesive sheet that is located closer to the other end than the one end; a plurality of fourth cuts each having a shape of a line segment inclined in a downstream direction toward the other end of the adhesive sheet, the fourth cuts being arranged from the middle portion of the adhesive sheet toward the other end; having Ends of adjacent third cuts overlap each other in the upstream or downstream direction, Ends of adjacent fourth cuts may overlap in the upstream or downstream direction. Effect of the Invention

[0016] According to the configuration of the present invention, the first protruding piece forming line forms a first protruding piece in the first line unformed portion, protruding downstream on the side opposite the core of the adhesive sheet. In the adhesive cleaner, since the first protruding piece protrudes downstream, the first protruding piece is easy to lift and pinch. As a result, the sheet end can be easily peeled off from the roll by pinching and pulling the first protruding piece.

[0017] In addition, by folding back the first protruding piece upstream along the first folding line, the tip portion of the first protruding piece is positioned outside one end of the adhesive sheet, and the adhesive layer at the tip portion of the first protruding piece can be attached to the cylindrical end of the roll of adhesive sheet, so that the first protruding piece can be fixed to the cylindrical end of the roll by attaching the adhesive layer at the tip portion to the cylindrical end of the roll of adhesive sheet. As a result, when the roll is rolled over the surface to be cleaned, the adhesive layer of the adhesive sheet can be prevented from sticking to the surface to be cleaned and causing the adhesive sheet to be pulled out of the roll. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view of an adhesive cleaner according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a top view of the adhesive cleaner according to the first embodiment. [Diagram 3] FIG. 3 is an enlarged view of region III shown in FIG. [Figure 4] 1 is a perspective view of the adhesive cleaner when the protruding piece is attached to the cylindrical end of the adhesive sheet roll. FIG. [Diagram 5] FIG. 11 is a top view of an adhesive cleaner according to a second embodiment. [Figure 6] FIG. 11 is a top view of an adhesive cleaner according to a third embodiment. [Figure 7] FIG. 11 is a top view of a modified adhesive cleaner according to the third embodiment. [Figure 8] FIG. 11 is a top view of another modified adhesive cleaner according to the third embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An adhesive cleaner according to an embodiment of the present invention will now be described in detail with reference to the drawings, in which the same or equivalent parts are designated by the same reference numerals.

[0020] (Embodiment 1) The adhesive cleaner according to the first embodiment is an adhesive cleaner provided with a cut line that crosses the adhesive sheet diagonally in order to easily cut off the outermost peripheral portion of the roll of the adhesive sheet on which dirt has adhered during cleaning. In addition to the cut line, this adhesive cleaner is provided with a protruding piece forming line that forms a protruding piece for easily peeling off the sheet end of the adhesive sheet from the roll when cutting the adhesive sheet. The configuration of this adhesive cleaner will be described with reference to Figures 1 to 4.

[0021] Fig. 1 is a perspective view of an adhesive cleaner 1A according to embodiment 1. Fig. 2 is a top view of the adhesive cleaner 1A. Fig. 3 is an enlarged view of region III shown in Fig. 2. Fig. 4 is a perspective view of the adhesive cleaner 1A when a protruding piece 61 is attached to a cylindrical end of an adhesive sheet roll 4.

[0022] 1 shows the adhesive cleaner 1A when the adhesive sheet 3 having the sheet end 33 cut along the cut line 5A is pulled out from the adhesive sheet roll 4, the axis of the adhesive sheet roll 4 is oriented in the left-right direction, and the cut line 5A on the cylindrical surface of the adhesive sheet roll 4 is positioned at the top, in order to make it easier to understand the shape. For convenience, the positional relationship of each part of the adhesive cleaner 1A will be described below with reference to this orientation.

[0023] As shown in FIG. 1, the adhesive cleaner 1A includes a cylindrical core 2 and an adhesive sheet 3 wound around the core 2.

[0024] The adhesive sheet 3 is formed in the shape of a long strip having a certain width. An adhesive layer containing an adhesive is provided on one surface of the sheet, except for an end portion in the width direction WD, which is a so-called turn-over margin. The adhesive sheet 3 is wound around the core 2 shown in FIG. 1 multiple times, with the surface on which the adhesive layer is formed facing the outside of the core 2. In this way, the adhesive sheet 3 forms an adhesive sheet roll 4.

[0025] Also, the adhesive sheet 3 has various cuts. In detail, when the adhesive cleaner 1A is used for cleaning and the adhesive strength of the adhesive layer at the outermost peripheral portion of the roll of the adhesive sheet 3 becomes weak, the outermost peripheral portion of the roll of the adhesive sheet 3 is cut off and used, and the adhesive sheet 3 has cut lines 5A, protruding piece forming lines 6A, and folding lines 7A formed therein for use in cutting off the outermost peripheral portion of the roll.

[0026] These will be described in detail below. Cutting line 5A is formed for use in cutting out the outermost peripheral portion of the roll of pressure-sensitive adhesive sheet 3 described above.

[0027] Conventionally, the tear lines have been perforations consisting of a plurality of linear cuts of a fixed length arranged in a straight line with a fixed distance between each other, as described in Patent Document 1.

[0028] However, the perforations must be pulled evenly across the perforations in a direction that pulls both sides apart, and then cracks must be generated between the incisions in the direction the perforations extend, causing the sheet to break. As a result, it is sometimes difficult to pull evenly across the perforations, and it is sometimes impossible to cut off the outermost periphery of the adhesive sheet roll along the perforations. In that case, the broken part that is not aligned with the perforations may stick to the adhesive layer underneath the roll, making it difficult to peel off the sheet end from the adhesive sheet roll.

[0029] Therefore, in order to make it easier to cut along the line, the cut line 5A is formed by arranging a large number of linearly extending notches 51 and C-shaped notches 52 shifted toward the upstream U side from the notches 51 alternately in the left-right direction, as shown in FIG. 2.

[0030] Here, the upstream U side refers to the side of the adhesive sheet 3 where the core 2 is located when the adhesive sheet 3 is wound around the core 2, and the downstream D side refers to the side where the sheet end 33 is located.

[0031] Each of the notches 51 extends linearly for a fixed length. Then, from the left end 31 to the right end 32, it is inclined in a direction D1 toward the upstream U. The inclination angle is, for example, about 3 to 7 degrees. A large number of the notches 51 are provided, and are arranged in a straight line with an uncut portion of length L1 provided between them. As a result, the notches 51 form perforations with long uncut portions.

[0032] In contrast, each of the notches 52 is formed in a C-shape with an opening facing downstream D in order to connect adjacent notches 51 from the upstream U when cutting out the outermost peripheral portion of the roll of adhesive sheet 3. In detail, the notches 52 have a central portion 521 parallel to the notch 51, a left end portion 522 bending from the central portion 521 to the downstream D, and a right end portion 523 bending from the central portion 521 to the downstream D side.

[0033] As shown in Fig. 3, the central portion 521 is formed to have a length substantially equal to the length L1 of the uncut portion between the adjacent notches 51R and 51L. The central portion 521 is disposed upstream U of the uncut portion. As a result, the left end of the central portion 521 substantially overlaps with the right end of the notch 51L on the left side in the upstream / downstream direction, and the right end of the central portion 521 substantially overlaps with the left end of the notch 51R on the right side in the upstream / downstream direction. Left end portion 522 and right end portion 523 are provided on the left and right sides of the central portion 521 to facilitate cracking and breaking of the overlapping portions in the upstream U direction when a tensile force is applied to the adhesive sheet 3.

[0034] Of the adjacent notches 51R and 51L, the left end portion 522 bends toward the right end of the notch 51L on the left side. The right end portion 523 bends toward the left end of the notch 51R on the right side. These bent shapes are curved. This prevents stress concentration at the bent portion when a tensile force is applied to the adhesive sheet 3, and prevents the adhesive sheet 3 from breaking at the bent portion.

[0035] Moreover, the tip portion of the left end portion 522 is close to the right end of the notch 51L on the left side due to the above-mentioned bending. The tip portion of the right end portion 523 is close to the left end of the notch 51R on the right side. The distance D2 between the tips of the left end portion 522 and the right end portion 523 is greater than the length L1 of the uncut portion between the notches 51R and 51L. The direction in which those tip portions extend is the downstream D direction. Furthermore, the distance D3 from those tips to the notches 51R and 51L is short enough that a crack grows and breaks when a certain amount of tensile force is applied to the adhesive sheet 3. For example, it is about 1 to 3 mm. With this configuration, the left end portion 522 and the right end portion 523 are cut off from the outermost peripheral portion of the roll of the adhesive sheet 3, and when a certain amount of tensile force is applied to the adhesive sheet 3, the uncut portion between the notches 51L and 51R is broken and connected to the notches 51R and 51L. As a result, left end portion 522 and right end portion 523 connect central portion 521 to cuts 51R, 51L, and the outermost periphery of the roll of adhesive sheet 3 is cut along cut line 5A.

[0036] In order to connect the adjacent notches 51R and 51L when broken, the central portion 521 may be shorter than the length L1 of the uncut portion, and in that case, the distance D2 may be the same as the length L1. Alternatively, the distance D2 may be slightly smaller than the length L1.

[0037] 2, the cut line 5A has such C-shaped cuts 52 and linear cuts 51 arranged alternately, so that the cut line 5A is easily broken along itself when the outermost peripheral portion of the roll of adhesive sheet 3 is cut off. Due to its structure, the cut line 5A is easily broken by a pulling force in the upstream U direction or the downstream D direction, but by arranging the cuts 51 in a straight line in the direction D1 toward the upstream U as it moves from the left end 31 to the right end 32, even when the outermost peripheral portion of the roll of adhesive sheet 3 is cut off from the left end 31 side by pinching the protruding piece 61 described later, the break proceeds toward the upstream U where the adhesive sheet roll 4 is located, making it easy to cut off.

[0038] The cut line 5A is formed between a starting point S1, which is away from the left end 31, and the right end 32. In the portion from the left end 31 to the starting point S1, a protruding piece forming line 6A, which is formed by cutting the adhesive sheet 3, is disposed in the same manner as the cut line 5A.

[0039] The protruding piece forming line 6A is a cut for forming a protruding piece 61 adjacent to the sheet end 33 formed when the outermost peripheral portion of the roll of the adhesive sheet 3 is cut off at the cutting line 5A. The protruding piece forming line 6A extends from the vicinity of the left side of the starting point S1 toward a point P on the left end surface of the adhesive sheet 3, which is downstream of the starting point S1. In detail, the protruding piece forming line 6A extends from the vicinity of the starting point S1 toward the downstream D side in a gentle curve, and further extends toward the downstream D side, and then bends to the left. The protruding piece forming line 6A reaches the left end surface of the adhesive sheet 3 through the left end portion 31. An uncut portion exists between the protruding piece forming line 6A and the starting point S1 of the cutting line 5A, but when the outermost peripheral portion of the roll of the adhesive sheet 3 is cut off, the uncut portion is broken, and the protruding piece forming line 6A is connected to the cutting line 5A. As a result, the protruding piece forming line 6A forms a protruding piece 61 that protrudes downstream D along the left end face of the adhesive sheet 3 on the left side of the sheet end 33 formed by the cutting line 5A. The size of the protruding piece 61 is at least large enough to be pinched with the fingertips, for example, about 1 cm in width and 2 cm in length.

[0040] The protruding piece 61 formed by the protruding piece forming line 6A protrudes downstream from the sheet end 33, and is therefore easy to use as a tab, i.e., a knob, when peeling off the sheet end 33 from the adhesive sheet roll 4. However, the protruding piece 61 has an adhesive layer on the outer surface of the roll, just like the adhesive sheet 3. For this reason, if dirt adheres across the protruding piece 61 and the adjacent lower layer part of the roll of the adhesive sheet 3, it may be difficult to lift or peel off the protruding piece 61. Therefore, the adhesive sheet 3 is formed with a folding line 7A for folding back the protruding piece 61 in advance, in order to make it easier to lift or peel off the adhesive sheet roll 4.

[0041] The folding line 7A is formed by a number of cuts 71, some of which are longer, but which are generally of the same length. Each of the cuts 71 is linear. The cuts 71 are aligned in the same direction. The adjacent cuts 71 are spaced apart from each other by a distance substantially equal to the length L1 between the linear cuts 51 of the cutting line 5A shown in FIG. 3. As a result, the distance between the cuts 71 is greater than the distance D3 from the C-shaped cut 52 to the linear cut 51 of the cutting line 5A. As a result, the folding line 7A is less likely to break than the cutting line 5A. As a result, the folding line 7A functions as a folding line rather than a cutting line. The folding line 7A functions as a valley fold line because it is supported by the adhesive sheet roll 4.

[0042] Also, as shown in FIG. 2, the folding line 7A is provided upstream U from the cutting line 5A, for example, about 0.5 to 1.5 cm upstream U from the cutting line 5A. As a result, the folding line 7A makes it possible to fold back the sheet end 33 of the adhesive sheet 3 formed by the cutting line 5A to the upstream U side. Conventionally, when the adhesive sheet roll 4 is rolled on the surface to be cleaned, the adhesive layer of the adhesive sheet 3 may stick to the surface to be cleaned, and the adhesive sheet may be pulled out one after another from the sheet end 33 of the adhesive sheet roll. However, as shown in FIG. 4, the folding line 7A folds back the sheet end 33 to the upstream U side, and the non-adhesive surface on the back side of the sheet end 33 faces the outside of the roll. As a result, the sheet end 33 is less likely to stick to the surface to be cleaned. As a result, the folding line 7A prevents the adhesive sheet 3 from being pulled out one after another from the sheet end 33.

[0043] In the state shown in Fig. 4, the opening of the C-shaped notch 52 that was present at the cutting line 5A faces the upstream U. When the outermost peripheral portion of the roll of adhesive sheet 3 is cut off, a fracture surface F is formed at the tip of the C-shaped notch 52, but due to the orientation described above, the fracture surface F does not face upstream or downstream. In addition, the curved bent portions of the center portion 521, left end portion 522, and right end portion 523, which are not shown in Fig. 4, face upstream or downstream. For this reason, even if the adhesive sheet roll 4 rolls on the surface to be cleaned, the folded-back sheet end 33 is not easily damaged.

[0044] 2, the folding line 7A is parallel to the linear cut 51 of the cutting line 5A. As a result, the folding line 7A is inclined at an angle θ toward the upstream U with respect to the left end face of the adhesive sheet 3. In contrast, the protruding piece 61 protrudes toward the downstream D and is therefore parallel to the left end face of the adhesive sheet 3. As a result, when the sheet end 33 is folded along the folding line 7A, the protruding piece 61 is folded back as shown by the dotted line DL in FIG. 2, causing the tip portion of the protruding piece 61 to protrude to the left outside of the adhesive sheet roll 4.

[0045] At this time, the adhesive layer on the surface of the protruding piece 61 faces the side where the roll central axis is located. In addition, the protruding length L of the protruding piece 61 is Xsinθ, where X is the distance from the tip of the protruding piece 61 to the folding line 7A and θ is the inclination angle of the folding line 7A with respect to the width direction WD, and is greater than the width of the left end 31 in the protruding direction where there is no adhesive layer. In other words, the protruding length L is longer than Wcosθ, where W is the width of the left end 31 where there is no adhesive layer. As a result, the adhesive layer at the tip of the folded protruding piece 61 is located on the left outer side of the adhesive sheet roll 4. By folding the tip of the protruding piece 61 located on the left outer side of the adhesive sheet roll 4 along the left end surface of the adhesive sheet roll 4, the adhesive layer at the tip can be attached to the left cylinder end of the adhesive sheet roll 4.

[0046] In order to reliably attach to the cylindrical end of adhesive sheet roll 4, it is desirable that the above-mentioned protruding length L is equal to or greater than the thickness T1 of adhesive sheet roll 4 or the overall thickness T2 of adhesive sheet 3 shown in FIG.

[0047] In this manner, the folding line 7A enables the protruding piece 61 to be affixed to the left cylindrical end of the adhesive sheet roll 4. As a result, as shown in Fig. 4, the folding line 7A affixes the tip portion of the protruding piece 61 to the left cylindrical end of the adhesive sheet roll 4, preventing the protruding piece 61 from getting caught on the surface to be cleaned and the adhesive sheet 3 from being pulled out from the adhesive sheet roll 4. In addition, the above-mentioned adhesive layer of the adhesive sheet 3 is prevented from sticking to the surface to be cleaned and the adhesive sheet 3 is prevented from being pulled out from the adhesive sheet roll 4 one after another from the sheet end 33.

[0048] The cut line 5A, the protrusion forming line 6A and the folding line 7A are formed at approximately one full circumference in order to cut out only the portions of the adhesive sheet 3 with reduced adhesive strength as much as possible when cutting out the adhesive sheet 3, i.e., to cut out only the outermost peripheral portion of the roll of the adhesive sheet 3 as much as possible. This structure is realized by punching out the cylindrical surface portion of the adhesive sheet roll 4 where no cuts have been formed with a Thomson blade, and forming the cuts 51 and 52 of the cut line 5A, the cut of the protrusion forming line 6A and the like.

[0049] As described above, in the adhesive cleaner 1A according to the first embodiment, the protruding piece forming line 6A forms the protruding piece 61 that protrudes downstream D from the sheet end 33. In the adhesive cleaner 1A, since the protruding piece 61 protrudes downstream D further than the sheet end 33, the protruding piece 61 is easy to peel off and easy to pinch. As a result, the sheet end 33 can be easily peeled off from the adhesive sheet roll 4 by pinching and pulling the protruding piece 61.

[0050] The protruding piece 61 is folded back upstream with the folding line 7A as a valley fold line, so that its tip portion is positioned outside the cylindrical end of the adhesive sheet roll 4 and the adhesive layer at the tip portion can be attached to the cylindrical end of the adhesive sheet roll 4. Therefore, by attaching the adhesive layer at the tip portion of the protruding piece 61 to the cylindrical end of the adhesive sheet roll 4, the protruding piece 61 can be fixed to the cylindrical end of the adhesive sheet roll 4. As a result, it is possible to prevent the adhesive layer of the adhesive sheet 3 from sticking to the surface to be cleaned and the adhesive sheet 3 from being pulled out of the adhesive sheet roll 4. In addition, since it can be attached to the cylindrical end, the position of the protruding piece 61 is not difficult to find even if dirt adheres to the adhesive sheet 3 during cleaning.

[0051] Moreover, by folding back the protruding piece 61 upstream along the fold line 7A as a valley fold, the non-adhesive back surface can be directed toward the outside of the roll. This prevents the protruding piece 61 itself from sticking to the surface to be cleaned. Since dirt does not easily adhere to the protruding piece 61 itself, it is easy to find the protruding piece 61 when cutting off the outermost peripheral portion of the roll of adhesive sheet 3.

[0052] In the adhesive cleaner 1A, since the folding line 7A is parallel to the cutting line 5A, the end portion where the sheet end 33 formed by the cutting line 5A is located can be folded with the folding line 7A as a valley fold line. This allows the non-adhesive surface on the back surface of the adhesive sheet 3 to be exposed on the surface of the adhesive sheet roll 4. As a result, the non-adhesive surface is formed in a band shape along the sheet end 33, making it difficult for the vicinity of the sheet end 33 to stick. This prevents the adhesive layer of the adhesive sheet 3 from sticking to the surface to be cleaned and the adhesive sheet 3 from being pulled out of the adhesive sheet roll 4 one after another from the sheet end 33.

[0053] In the present specification and claims, the cut line 5A, the protruding piece 61, the protruding piece forming line 6A, and the folding line 7A described in the first embodiment are also referred to as the first cut line, the first protruding piece, the first protruding piece forming line, and the first folding line. The cuts 51 and 52, and the direction D1 are also referred to as the first cut, the second cut, and the first direction. In addition, the portion where the cut line 5A does not exist from the left end 31 to the starting point S1 away from the left end 31 where the protruding piece 61 is formed is also referred to as the first line unformed portion.

[0054] (Embodiment 2) In the adhesive cleaner 1A according to embodiment 1, the folding line 7A is formed on the upstream U side of the cut line 5A. However, the present invention is not limited to this. In the present invention, it is sufficient that the folding line 7A is provided upstream U from the tip of the protruding piece 61 and extends in a direction toward the upstream U as it goes from one end of the adhesive sheet 3 to the other end.

[0055] The adhesive cleaner 1B according to the second embodiment is an adhesive cleaner in which a folding line 7B is formed at the base portion of the protruding piece 61. The adhesive cleaner 1B according to the second embodiment will be described below with reference to Fig. 5. In the second embodiment, the configuration different from the first embodiment will be mainly described.

[0056] Fig. 5 is a top view of an adhesive cleaner 1B according to embodiment 2. For ease of understanding, Fig. 5 shows the adhesive cleaner 1B facing in the same direction as the adhesive cleaner 1A shown in Fig. 2.

[0057] As shown in FIG. 5, in the adhesive cleaner 1B, a protrusion forming line 6B for forming a protrusion 62 protruding in two stages and a folding line 7B provided at the base portion of the protrusion 62 for folding back only the protrusion 62 are formed on the adhesive sheet 3.

[0058] The adhesive sheet 3 is provided with a cut line 5B formed by a linear cut 51 and a C-shaped cut 52, similar to the cut line 5A described in embodiment 1. The cut line 5B has the same configuration as the cut line 5A of embodiment 1, except that it extends from a starting point S2 located to the right of the starting point S1 and, as a result, its length is different, and therefore detailed description thereof will be omitted, but the protruding piece forming line 6B is provided to the left of the starting point S2 of the cut line 5B.

[0059] The protruding piece forming line 6B extends from a starting point S3 located near the left side of the starting point S2 of the cutting line 5B to a position P on the left and downstream D side of the adhesive sheet 3. In detail, the protruding piece forming line 6B bends from the starting point S3 in the downstream D direction, then extends in the downstream D direction, then bends to the left to become parallel to the cutting line 5B, and heads toward the left end 31. Furthermore, the protruding piece forming line 6B extends parallel to the cutting line 5B and toward the left end 31, then bends again in the downstream D direction and extends in the downstream D direction, then bends again to the left to extend parallel to the width direction WD of the adhesive sheet 3. Then, the protruding piece forming line 6B passes through the left end 31 and reaches the left end surface of the adhesive sheet 3. With this configuration, the protruding piece forming line 6B forms a protruding piece 62 having a wide one-step portion and a two-step portion narrower than the one-step portion and shifted to the left.

[0060] In contrast, the folding line 7B is formed by a plurality of cuts 72 arranged on the left side of the starting point S3 of the projection-piece forming line 6B.

[0061] Each of the cuts 72 is formed to have a length that is approximately the same as or slightly shorter than that of the linear cuts 51 of the cut line 5B. The cuts 72 extend straight in the same direction as the linear cuts 51. The cuts 72 are arranged on an extension line of the linear cuts 51 of the cut line 5B. This allows the folding line 7B to fold the protruding piece 62 along the sheet edge 33 (not shown in FIG. 5) formed by the cut line 5A.

[0062] Additionally, adjacent notches 72 are spaced apart by approximately the same distance as the notches 71 of the folding line 7A described in embodiment 1. The notches 72 are positioned to the left of the starting point S3 of the projection-piece forming line 6B, and are therefore located upstream U of the projection-piece forming line 6B. For this reason, the notches 72 are less likely to be subjected to a pulling force and less likely to break when cutting off the outermost peripheral portion of the roll of adhesive sheet 3, but being spaced apart by the above-mentioned distance makes it easier to fold at the locations where the notches 72 are arranged.

[0063] The folding line 7B has such a configuration, and thus allows the protruding piece 62 formed by the protruding piece forming line 6B to be folded back at its base portion. By folding back the protruding piece 62, the folding line 7B positions the adhesive layer at the tip portion of the protruding piece 62 on the left outer side of the adhesive sheet roll 4, as in the case of the folding line 7A in the first embodiment. Furthermore, the adhesive layer at the tip portion can be attached to the left cylindrical end of the adhesive sheet roll 4.

[0064] Also, the folding line 7B folds the protruding piece 62 back so that the non-adhesive surface of the back surface faces the outside of the roll. The protruding piece 62 protrudes in a two-stage shape, with the number of stages increasing toward the left side, so that the area of ​​the non-adhesive surface increases toward the left, i.e., toward the tip portion of the protruding piece 62. As a result, the protruding piece 62 is less likely to stick to the surface to be cleaned toward the tip portion, and this can prevent the adhesive layer of the adhesive sheet 3 from sticking to the surface to be cleaned and the adhesive sheet 3 from being pulled out of the adhesive sheet roll 4 one after another when the adhesive sheet roll 4 is rolled over the surface to be cleaned, as described in the first embodiment.

[0065] As described above, in the adhesive cleaner 1B according to the second embodiment, the folding line 7B is formed on an extension of the cut line 5B, and the folding line 7B is inclined in a direction toward the upstream U side as it moves rightward from the left end 31 of the adhesive sheet 3. As a result, by folding back the protruding piece 62 on the left end 31 side of the adhesive sheet 3 along the folding line 7B, similarly to the first embodiment, the tip portion of the protruding piece 62 is positioned outside the cylindrical end of the adhesive sheet roll 4, and the adhesive layer at the tip portion can be attached to the cylindrical end of the adhesive sheet roll 4.

[0066] The protruding piece 62 has a two-step shape that protrudes from the sheet end 33 toward the left side. Therefore, when folded back along the folding line 7B, the area of ​​the non-adhesive surface on the back surface of the protruding piece 62 increases toward the tip portion of the protruding piece 62 that is affixed to the cylindrical end of the adhesive sheet roll 4. As a result, when the adhesive layer at the tip portion of the protruding piece 62 is affixed to the cylindrical end of the adhesive sheet roll 4, the protruding piece 62 is less likely to stick to the surface to be cleaned.

[0067] (Embodiment 3) In the adhesive cleaners 1A and 1B according to the first and second embodiments, the cut lines 5A and 5B are inclined only in the upstream direction from the left end 31 to the right end 32. However, the present invention is not limited to this. In the present invention, it is sufficient that the cut lines 5A and 5B extend from one end side to the other end side in the width direction WD of the adhesive sheet 3, and that a first line unformed portion is provided in a portion of the one end side. Therefore, it is sufficient that the cut lines 5A and 5B include a cut line of this shape in a portion, and may include other cut lines in the other portions.

[0068] In an adhesive cleaner 1C according to embodiment 3, a cutoff line 5C includes a first line portion extending in a direction toward the upstream U from the left end 31 toward the right end 32 of the adhesive sheet 3, as well as a second line portion that is symmetrical to the first line portion and extends in a direction toward the upstream U from the right end 32 toward the left end 31. Hereinafter, the adhesive cleaner 1C according to embodiment 3 will be described with reference to Fig. 6. In embodiment 3, the configuration different from embodiments 1 and 2 will be mainly described.

[0069] Fig. 6 is a top view of an adhesive cleaner 1C according to embodiment 3. Like Fig. 5, Fig. 6 shows the adhesive cleaner 1C facing in the same direction as the adhesive cleaner 1A shown in Fig. 2 for ease of understanding.

[0070] 6, the cut line 5C includes a first line portion 53 and a second line portion 54 that is symmetrical to the first line portion 53 and connected to the first line portion 53 at a midpoint M. This makes the cut line 5C V-shaped.

[0071] In the first line portion 53, the linear cuts 51 and C-shaped cuts 52 of the cut line 5A described in the first embodiment are alternately arranged in the same manner as in the first embodiment. The first line portion 53 extends from a starting point S4 on the side of the left end portion 31 of the adhesive sheet 3 to a midpoint M which is in the middle in the width direction WD and is upstream U of the starting point S4. As a result, the first line portion 53 is inclined toward the upstream U. The inclination angle is almost twice that of the first embodiment, since the end point is positioned upstream U by the same amount as the cut line 5A in the first embodiment.

[0072] On the other hand, the second line portion 54 extends from a starting point S5 on the side of the right end portion 32 of the adhesive sheet 3 to the midpoint M, and as a result, is inclined toward the upstream U. The second line portion 54 is connected to the first line portion 53 at the midpoint M. The second line portion 54 is configured such that the straight cut 51 and C-shaped cut 52 of the cutting line 5A described in the first embodiment are symmetrical to those of the first line portion 53.

[0073] A protrusion forming line 6A for forming the protrusion 61 described in the first embodiment is provided near the left side of the starting point S4 of the first line portion 53. Also, a protrusion forming line 6C for forming a protrusion 63 that is symmetrical to the protrusion 61 is provided near the right side of the starting point S5 of the second line portion 54. Thereby, in the adhesive cleaner 1C, the protrusions 61 and 63 are formed on the left and right sides, respectively, of the adhesive sheet 3. As a result, in the adhesive cleaner 1C, it is easier to pull up the sheet end 33 when cutting off the adhesive sheet 3.

[0074] In order to make it possible to fold back these protruding pieces 61, 63, incisions 73, 74 of the folding line 7C are formed on the left extension line of the first line portion 53 and the right extension line of the second line portion 54. The incisions 73, 74 are shorter than the linear incisions 51 of the first line portion 53 and the second line portion 54. Since there is a sufficient distance between the protruding piece forming line 6A and the protruding piece forming line 6C, they are not easily broken and function as folding lines. Since the incisions 73, 74 are inclined in the same direction as the first line portion 53 and the second line portion 54, when the protruding pieces 61, 63 are folded back, the protruding pieces 61, 63 are directed toward the outside of the roll. As a result, as in the first and second embodiments, the tip portions of the protruding pieces 61, 63 are positioned outside the cylindrical end of the adhesive sheet roll 4, and the adhesive layer at the tip portions can be attached to the cylindrical end of the adhesive sheet roll 4.

[0075] As described above, the adhesive cleaner 1B of embodiment 2 has protruding pieces 61, 63 that protrude from the left and right sides of the adhesive sheet 3 when folded along the notches 73, 74, so that the sheet end 33 can be easily peeled off when cutting off the outermost peripheral portion of the roll of adhesive sheet 3.

[0076] Furthermore, by folding back the protruding pieces 61, 63, the adhesive layer at the tip portions of the protruding pieces 61, 63 can be affixed to the cylindrical end of the adhesive sheet roll 4. As a result, when the adhesive layer at the tip portions of the protruding pieces 61, 63 is affixed to the cylindrical end of the adhesive sheet roll 4, it is possible to prevent the protruding pieces 61, 63 from sticking to the surface to be cleaned.

[0077] In addition, the protruding piece 63, the protruding piece forming line 6C, and the cut 74 described in the third embodiment are also referred to as the second protruding piece, the second protruding piece forming line, and the second folding line in this specification and claims. The portion from the starting point S5 to the right end 32 where the second line portion 54 does not exist is also referred to as the second line unformed portion in this specification and claims.

[0078] Although the adhesive cleaners 1A-1C according to the embodiments 1-3 of the present invention have been described above, the present invention is not limited to these.

[0079] For example, in the embodiment 1-3, the respective parts of the adhesive cleaner 1A-1C are described when the axis of the adhesive sheet roll 4 is oriented in the left-right direction and the cut line 5A-5C on the cylindrical surface of the adhesive sheet roll 4 is positioned at the top, but the present invention is not limited to this. This orientation is merely for convenience of explanation. In the present invention, it is sufficient that the relative positional relationship of the respective parts of the adhesive cleaner 1A-1C is maintained, and the orientation of the adhesive cleaner 1A-1C is arbitrary. Therefore, for example, the left end and the right end of each part of the adhesive cleaner 1A-1C may be reversed and called the right end and the left end. Also, they may simply be called one end and the other end.

[0080] In addition, in embodiment 1-3, cut lines 5A-5C are configured with a plurality of alternatingly arranged linear cuts 51 and C-shaped cuts 52, but the present invention is not limited thereto. In the present invention, cut lines 5A-5C need only extend from one end side to the other end side in the width direction WD of adhesive sheet 3 and have a non-lined portion provided in a portion of the one end side, and to that extent, there are no limitations on the configuration of cut lines 5A-5C that function as cut lines.

[0081] Fig. 7 is a top view of a modified adhesive cleaner 1C according to embodiment 3. Fig. 8 is a top view of another modified adhesive cleaner 1C according to embodiment 3.

[0082] As shown in Figure 7, the cut line 5C may be composed of a plurality of linear cuts 55 that are inclined toward the upstream U as they move toward the left end portion 31 and are arranged at regular intervals in the width direction WD of the adhesive sheet 3, and a plurality of linear cuts 56 that are symmetrical to the cuts 55 and inclined toward the upstream U as they move toward the right end portion 32 and are arranged at regular intervals in the width direction WD.

[0083] In this case, the ends of adjacent notches 55 may overlap upstream and downstream, and the ends of adjacent notches 56 may overlap upstream and downstream. In detail, the right end of the left notch 55 may overlap the left end of the right notch 55, and the right end of the left notch 56 may overlap the left end of the right notch 56, and the right end of the left notch 56 may overlap the left end of the right notch 56. The overlapping portions may be a distance that can be broken when the adhesive sheet 3 is pulled with a certain amount of force, for example, about 1 to 3 mm. The rightmost notch 55 in the row of notches 55 may face the leftmost notch 56 in the row of notches 56 across the midpoint M in the width direction WD of the adhesive sheet 3. The facing distance may be a distance that can be broken with a certain amount of pulling force.

[0084] In this form, similarly to the cutting lines 5A and 5B, by pulling the sheet edge of the adhesive sheet 3, a crack is generated between the incisions 55 and 56, and the sheet can be broken. Note that in the form shown in Fig. 7, since it is symmetrical, the stress due to the pulling force is balanced in the part with the row of incisions 55 and the part with the row of incisions 56. Therefore, although some force is required to break the sheet, the entire sheet breaks almost simultaneously, making a popping sound when it breaks.

[0085] 8, the cut line 5C may be formed of only a row of the above-mentioned multiple cuts 56. Furthermore, in the embodiment 1-3, the central portion 521 of the C-shaped cut 52 is linear, but the central portion 521 may be curved or arc-shaped, for example, recessed toward the upstream U. Also, the cut line 5C may have almost no length and simply connect the left end portion 522 and the right end portion 523.

[0086] In the present invention, since it is sufficient that the cut lines 5A-5C extend from one end side to the other end side in the width direction WD of the adhesive sheet 3 and have a portion where no line is formed, it is optional whether the cut lines 5A-5C are inclined with respect to the left end face or the right end face of the adhesive sheet 3. As shown in Figs. 7 and 8, the cut lines 5C may extend perpendicular to the left or right end face of the adhesive sheet 3.

[0087] Thus, in the present invention, perforation lines 5A-5C may function as perforation lines in various ways, as may folding lines 7A-7C.

[0088] In the embodiment 1-3, the protruding piece forming line 6A-6C reaches the left end surface or the right end surface of the adhesive sheet 3 to form the protruding piece 61-63 at the left end or the right end of the adhesive sheet 3, but the present invention is not limited thereto. In the present invention, there is a line-unformed portion where the cut line 5A-5C is not formed at a part of one end side in the width direction of the adhesive sheet 3, and the protruding piece forming line 6A-6C that forms the protruding piece 61-63 at the line-unformed portion may be provided. For this reason, the protruding piece 61-63 may be formed at a position that is a certain distance away from the left end or the right end of the adhesive sheet 3 toward the center. In this case, the protruding length L of the protruding piece 61 described in the embodiment 1 is the length obtained by subtracting the certain distance from Xsinθ.

[0089] In addition, in embodiment 1-3, there is no adhesive layer at both ends of the adhesive sheet 3, and there is a turn-over margin, but in the present invention, the presence or absence of a turn-over margin is optional, and the present invention is also applicable to an adhesive sheet 3 without a turn-over margin. [Explanation of symbols]

[0090] 1A-1C...adhesive cleaner, 2...core, 3...adhesive sheet, 4...adhesive sheet roll, 5A-5C...cut line, 6A-6C...projection piece formation line, 7A-7C...fold line, 31...left end, 32...right end, 33...sheet end, 51,51L,51R...notch, 52...notch, 53...first line portion, 54...second line portion, 55,56...notch, 61-63...projection piece, 71-74...notch, 521...center portion, 522...left end portion, 523...right end portion, D...downstream, D1...direction, D2,D3...distance, DL...dotted line, F...fracture surface, L...projection length, M...midpoint, P...location, S1-S5...starting point, T1,T2...thickness, U...upstream, W...width, WD...width direction, X...distance, θ...angle.

Claims

1. An adhesive cleaner in which a strip-shaped adhesive sheet having an adhesive layer formed on one side is rolled up with the adhesive layer facing outward, the adhesive sheet having: a cut line extending from one end side to the other end side in the width direction of the pressure-sensitive adhesive sheet, and a first line-unformed portion being provided in a portion of the one end side; a first protruding piece forming line for forming a first protruding piece in the first line unformed portion, the first protruding piece protruding downstream on the side opposite to the core side of the pressure-sensitive adhesive sheet; a first folding line that is provided upstream of a tip of the first protruding piece and extends in an upstream direction from the one end to the other end of the pressure-sensitive adhesive sheet; is formed, The first protruding piece is folded back upstream along the first fold line, thereby positioning the tip portion of the first protruding piece outside the one end of the adhesive sheet and enabling the adhesive layer at the tip portion of the first protruding piece to be affixed to the cylindrical end of the roll of adhesive sheet.

2. The cut line is inclined in an upstream direction from the one end to the other end, The first folding line is provided upstream of the cutting line, extends from the one end of the adhesive sheet to the other end, and is parallel to the cutting line. The adhesive cleaner of claim 1.

3. The first folding line is formed in the first unlined portion and is located on an extension of the cutting line. The adhesive cleaner according to claim 2.

4. The cut line is a first line portion that extends from the one end to a middle portion in the width direction of the pressure-sensitive adhesive sheet, including the first line unformed portion, and that inclines in an upstream direction from the one end toward the middle portion; a second line portion extending from the other end of the pressure-sensitive adhesive sheet to the intermediate portion, the second line portion being provided in a portion of the other end, and inclining in an upstream direction from the other end toward the intermediate portion; having The pressure-sensitive adhesive sheet includes: a second protruding piece forming line for forming a second protruding piece protruding downstream in the second line unformed portion; a second folding line provided upstream of the tip of the second protruding piece and extending in an upstream direction from the other end of the pressure-sensitive adhesive sheet toward the middle portion; is formed, the second protruding piece is folded back upstream along the second folding line, so that a tip portion of the second protruding piece is positioned outside the other end of the adhesive sheet, and the adhesive layer at the tip portion of the second protruding piece can be attached to the other cylindrical end of the roll. The adhesive cleaner of claim 1.

5. The cut line is a plurality of first notches extending linearly in a first direction from the one end of the pressure-sensitive adhesive sheet toward the other end and arranged apart from each other in the first direction; a plurality of second notches, each having a central portion provided upstream of a gap between adjacent first notches in the first direction, one end portion bent from the central portion toward one of the adjacent first notches in the first direction and adjacent to the one of the first notches, and an other end portion bent from the central portion toward the other of the adjacent first notches in the first direction and adjacent to the other of the first notches; having The adhesive cleaner according to any one of claims 1 to 4.

6. The cut line is a plurality of third notches each having a shape of a line segment inclined in a downstream direction toward the one end of the adhesive sheet, the third notches being arranged from the one end of the adhesive sheet toward a middle portion of the adhesive sheet that is located closer to the other end than the one end; a plurality of fourth cuts each having a shape of a line segment inclined in a downstream direction toward the other end of the adhesive sheet, the fourth cuts being arranged from the middle portion of the adhesive sheet toward the other end; having Ends of adjacent third cuts overlap each other in the upstream or downstream direction, Ends of adjacent fourth cuts overlap in the upstream or downstream direction. The adhesive cleaner according to any one of claims 1 to 4.

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