JP7406194B2 - How to install double-sided adhesive tape and weed control sheet - Google Patents

Description

The present invention relates to a double-sided adhesive tape for bonding weed control sheets made of woven fabric or nonwoven fabric, and a method for installing the weed control sheet.

Weed control sheets (including weed control mats) are widely used to prevent plants from growing from the ground. For example, by installing (laying) a weed control sheet to cover the installation surface on the side of the road, it is possible to prevent weeds from growing. This makes it possible to eliminate the need for periodic weeding work or reduce the frequency of weeding work, and it becomes possible to reduce road maintenance costs (for example, see Patent Document 1 below).

Japanese Patent Application Publication No. 2011-106092

By the way, heretofore, there has been a problem that it has not been possible to easily install a weed control sheet made of woven fabric or non-woven fabric. A specific example of such a problem will be described below.

Generally, weed control sheets are portable materials that have predetermined dimensions for each product. In order to completely cover installation surfaces of various shapes and sizes using such weed control sheets, it is necessary to arrange a plurality of weed control sheet pieces on the installation surface. The arranged weed control sheets are fixed by, for example, driving fixing pins into the installation surface so as to penetrate the weed control sheets.

However, there is a problem in that a large weed-preventing effect cannot be expected only by providing fixing pins. In other words, even if the weed control sheets are arranged so that they partially overlap each other so that there is no gap when viewed from the installation surface, there will be a gap between the stacked weed control sheets in the area between the fixed pins. occurs. In this case, weeds and the like may grow due to light entering through the gap. In addition, weeds may occur when soil accumulates in the gaps between stacked weed control sheets, and flying seeds of weeds fall into the accumulated soil and take root. Furthermore, if there is a gap between stacked weed control sheets, strong winds may enter the gap and cause the weed control sheet to peel off from the installation surface, exposing the land on the installation surface.

Therefore, in order to obtain a greater weed control effect, the following construction methods have been adopted in which weed control sheets are held in a partially overlapped state using adhesive tape or adhesive. There is.

FIG. 9 is a diagram illustrating a conventional method of constructing a weed control sheet using adhesive tape.

An example of a method for constructing a weed control sheet using adhesive tape is as follows. That is, as shown in the figure, two weed control sheets 801 and 802 are overlapped with an overlap margin having a width of, for example, 10 centimeters, and fixing pins 803 are driven (step S811). Then, an adhesive tape 805 is pasted onto the two weed control sheets 801 and 802 stacked one on top of the other, and the end E of the overlapping portion is covered with the adhesive tape 805 (step S812). As the adhesive tape 805, for example, one using PVC soft vinyl chloride (PVC) as the base material and an acrylic adhesive as the adhesive is used.

According to this construction method using adhesive tape, since the adhesive is applied to the adhesive tape, there is no need to control the amount of adhesive applied, and the adhesive can be applied evenly to the adherend. can be fixed. Furthermore, since there is no need to apply an adhesive to the weed control sheet, the construction can be completed in a short time.

On the other hand, the construction method using adhesive tape has the following problems. That is, since the ends of the overlapping portions are covered with the adhesive tape, the area where the adhesive tape adheres to the weed control sheet is narrowed. Also, depending on the thickness of the weed control sheet, a difference of approximately 2 mm to 4 mm may occur at the end of the overlapping part, and if the adhesive tape is not crimped sufficiently along the weed control sheet, the adhesive tape and weed control sheet may A gap may occur between the sheet and the sheet. If there is a gap between the adhesive tape and the weed control sheet, rainwater or the like will enter the gap, making the adhesive tape easy to peel off.

FIG. 10 is a diagram illustrating a conventional method of constructing a weed control sheet using an adhesive.

An example of a method for constructing a weed control sheet using an adhesive is as follows. That is, as shown in the figure, two weed control sheets 801 and 802 are overlapped with an overlap margin having a width of, for example, 10 centimeters, and rough positioning is performed (step S821). Then, the upper weed control sheet 802 is turned over, and adhesive 825 is applied to the overlapped area of the lower weed control sheet 801 (step S822; hatching in the figure indicates the applied area). After that, for example, after an open time of several minutes to several tens of minutes has elapsed, the upper weed control sheet 802 that has been turned over is returned to its original position, and pressure is applied from above the overlapped portion (sometimes referred to as "rolling"). ), the two weed control sheets 801 and 802 are adhered (step S823). After bonding, a fixing pin 803 may be driven from above the overlapped portion. After that, after a predetermined curing period, reliable adhesive strength can be obtained.

The construction method using such an adhesive has the following advantages. That is, if the adhesive can be used in an appropriate manner, high adhesive strength can be obtained. Moreover, a relatively inexpensive adhesive can be used, and the cost of materials required for construction can be reduced.

On the other hand, construction methods using adhesives have the following problems. In other words, since the adhesive is liquid, when using a weed control mat made of woven or non-woven fabric as the adherend, the adhesive may be absorbed strongly depending on the weed control mat, and the The amount of adhesive used is variable. Further, the amount and range of adhesive applied varies depending on the person in charge of the construction work, and the amount of adhesive used may not be uniform. Moreover, unevenness may occur in the amount of adhesive applied (uneven coating), and a uniform adhesive force may not be obtained or an amount of adhesive greater than the required amount may be used. Additionally, the viscosity of the adhesive and the time it takes to achieve the required adhesive strength (open time and curing period) are easily affected by climate such as temperature. Therefore, it is necessary to select the adhesive to be used, and skills are required to use the adhesive. Additionally, since open time must be strictly managed, there is a problem in that construction work is relatively difficult.

The double-sided adhesive tape of the first invention is a double-sided adhesive tape for bonding weed control sheets made of woven fabric or non-woven fabric, and comprises a base material mainly composed of linear low-density polyethylene, and a base material mainly composed of linear low-density polyethylene. It is a double-sided adhesive tape comprising two adhesive layers arranged on both sides of the material.

With this configuration, it is possible to easily install the weed control sheet made of woven or nonwoven fabric.

Further, the double-sided adhesive tape of the second invention is different from the first invention in that each of the two adhesive layers contains an acrylic adhesive as a main component.

With this configuration, the adhesive strength of the double-sided adhesive tape to the weed control sheet can be increased.

Further, in contrast to the first or second invention, the double-sided adhesive tape of the third invention is a double-sided adhesive tape in which the base material has a thickness smaller than the thickness of at least one of the two adhesive layers. be.

With this configuration, the double-sided adhesive tape can be made to follow the weed control sheet and be reliably attached to the weed control sheet.

Moreover, the double-sided adhesive tape of the fourth invention is a double-sided adhesive tape in which the base material has a thickness of 10 micrometers or more and 40 micrometers or less, in contrast to any one of the first to third inventions.

With this configuration, the adhesive layer can be easily attached to the surface of the weed control sheet while improving the stability of the tape, and the weed control sheet can be installed more efficiently.

Further, the double-sided adhesive tape of the fifth invention is different from any one of the first to fourth inventions in that it has a plurality of perforations formed across the double-sided adhesive tape, and the plurality of perforations are This is a double-sided adhesive tape that is spaced apart from each other in the longitudinal direction of the adhesive tape.

With this configuration, the double-sided adhesive tape can be easily cut using the perforations, and the work of installing the weed control sheet can be performed more easily.

Moreover, the double-sided adhesive tape of the sixth invention is a roll to which a rotating part of an applicator is attached for pasting one side of the double-sided adhesive tape to an adherend, in contrast to any one of the first to fifth inventions. The tape is equipped with a core and one release liner that has release properties on both sides, and is wound into a roll around the core, with the release liner and the tape body containing a base material and two adhesive layers stacked on top of each other. This is double-sided adhesive tape being passed around.

With this configuration, it is possible to easily install the weed control sheet made of woven or nonwoven fabric.

Further, in the double-sided adhesive tape of the seventh invention, in contrast to the sixth invention, the release liner is configured such that the radially inner surface has higher releasability than the radially outer surface. , is a double-sided adhesive tape in which one adhesive layer is exposed on the outer circumferential surface of the roll when the tape body is rewound together with a release liner from a wound roll.

With this configuration, the roll of double-sided adhesive tape can be rotated while applying rolling pressure to the surface of the weed control sheet using the applicator, making it easy to attach the double-sided adhesive tape to the weed control sheet. It can be carried out.

Furthermore, the method for installing a weed control sheet according to the eighth invention is a method for installing a weed control sheet made of woven fabric or nonwoven fabric using the double-sided adhesive tape according to any one of the first to seventh inventions. removing the release liner of the double-sided adhesive tape from the first weed control sheet, on which the first adhesive side of the double-sided adhesive tape is attached to a part of the surface, and exposing the second adhesive side of the double-sided adhesive tape; , arranging a second weed control sheet with respect to the first weed control sheet so as to cover the second adhesive surface; This is a weed control sheet installation method including the step of pressing one side of the weed control sheet toward the other.

With this configuration, a weed control sheet made of woven or nonwoven fabric can be easily installed.

Furthermore, a method for installing a weed control sheet according to the ninth invention is a method for installing a weed control sheet made of woven or non-woven fabric using an applicator having a rotating part to which the double-sided adhesive tape according to either the sixth or seventh invention is attached. A method for installing a weed control sheet made of a step of attaching the first adhesive surface of the double-sided adhesive tape by rotating the rotating part while pressing the outer peripheral surface of the tape against the first weed control sheet; removing the release liner to expose the second adhesive side of the double-sided adhesive tape; placing a second weed control sheet on the first weed control sheet so as to cover the second adhesive side; This method of installing a weed control sheet includes the step of pressing a second weed control sheet downward from above the second weed control sheet in a region where the adhesive tape is sandwiched.

With this configuration, the weed control sheet made of woven or nonwoven fabric can be easily installed at a construction site using an applicator.

According to the double-sided adhesive tape according to the present invention, it is possible to easily install a weed control sheet made of woven fabric or nonwoven fabric.

A diagram schematically showing a double-sided adhesive tape according to one embodiment of the present invention Diagram schematically explaining the layer structure of the double-sided adhesive tape Diagram showing an example of perforations provided on the same double-sided adhesive tape Diagram showing the double-sided adhesive tape and applicator A sectional view illustrating an example of installing a weed control sheet in this embodiment The first diagram shows an example of how to install a weed control sheet using the same double-sided adhesive tape. The second diagram shows an example of how to install the weed control sheet. A diagram showing an applicator according to a modified example of the present embodiment Diagram explaining the conventional construction method of weed control sheet using adhesive tape Diagram explaining the conventional construction method of weed control sheet using adhesive

Hereinafter, one embodiment of a double-sided adhesive tape for a weed control sheet will be described with reference to the drawings.

(Embodiment)

In this embodiment, the double-sided adhesive tape is used to bond weed control sheets made of woven fabric or non-woven fabric.

In this embodiment, the weed control sheet is, for example, a weed control sheet made of a nonwoven fabric made of polyester fibers. The thickness of the weed control sheet is, for example, 3 mm to 4 mm. A weed control sheet is, for example, a belt-shaped sheet having a predetermined width (for example, 1 meter), and is distributed and transported as a roll-shaped material wound around a core. It is something. Note that the material, dimensions, etc. of the weed control sheet are not limited to these. For example, it may be constructed using other chemical fibers or may be constructed using natural fibers. The weed control sheet may be called a mat, and may be distributed as a tile-like piece having a predetermined size, for example.

For example, one or more weed control sheets are arranged so as to cover an installation surface such as leveled land, and constitute a weed control laying body that prevents weeds and the like from growing from the installation surface. On a wide installation surface, two or more weed control sheets are arranged so as to partially overlap each other to form a weed control laying body.

[Explanation about the structure of double-sided adhesive tape]

FIG. 1 is a diagram schematically showing a double-sided adhesive tape according to one embodiment of the present invention. FIG. 2 is a diagram schematically explaining the layer structure of the double-sided adhesive tape 1.

As shown in FIG. 1, the double-sided adhesive tape 1 includes a tape body 2, a release liner 40, a winding core 50, and a perforation 90. The double-sided adhesive tape 1 is wound into a roll around a winding core 50 with the tape body 2 and release liner 40 stacked on top of each other.

In FIG. 2, the area surrounded by the two-dot chain line schematically shows the layered structure of the double-sided adhesive tape 1 on an enlarged scale.

As shown in FIG. 2, the tape body 2 includes a base material 5, a first adhesive layer 10, and a second adhesive layer 20. In this embodiment, the tape body 2 has a first adhesive layer 10 located on the outside in the radial direction (outside in the double-sided adhesive tape 1 wound into a roll) and a first adhesive layer 10 located on the inside in the radial direction (outside in the double-sided adhesive tape 1 wound into a roll). It has a structure in which the base material 5 is sandwiched between the second adhesive layer 20 located on the inner side of the double-sided adhesive tape 1 in a stretched state.

The first adhesive layer 10 has a first adhesive surface 11 that is the radially outer surface of the tape body 2 . Further, the second adhesive layer 20 has a second adhesive surface 22 that is the radially inner surface of the tape body 2 .

In this embodiment, each of the two adhesive layers 10 and 20 is an acrylic adhesive. This acrylic pressure-sensitive adhesive has the property of exhibiting high adhesion and anchoring effect to adherends having uneven surfaces. Therefore, each of the two adhesive layers 10 and 20 has good adhesion to the surface of the weed control sheet having a structure in which fibers are entangled. In particular, the acrylic adhesive exhibits high adhesion to polyester, which is the material of the weed control sheet in this embodiment. Note that the acrylic pressure-sensitive adhesive is preferably configured to have relatively high cohesive force. This makes it possible to maximize adhesion to the adherend and anchoring effect without destroying the adhesive layers 10, 20. Note that each of the two adhesive layers 10 and 20 may contain other types of substances in addition to the acrylic adhesive, as long as they contain the acrylic adhesive as a main component.

The base material 5 has linear low density polyethylene (sometimes called LLDPE (Linear Low Density Polyethylene)) as a main component. In this embodiment, the base material 5 is a film made of linear low density polyethylene. With this configuration, the followability of the tape body 2 can be further improved.

By including the base material 5, the double-sided adhesive tape 1 has higher tensile strength than a webless adhesive tape without a base material, is less likely to peel off, and has high stability as a tape. Therefore, the double-sided adhesive tape 1 can be easily attached to an adherend, and workability is improved. Furthermore, since the base material 5 is mainly composed of linear low density polyethylene, the double-sided adhesive tape 1 is relatively stiff and soft. Therefore, the ability to follow uneven surfaces is improved. Moreover, since the double-sided adhesive tape 1 is soft, when it is rolled, the adhesive on both sides of the tape bites into the surface of the adherend, and has a high anchoring effect. Therefore, it can be said that the adhesive strength of the double-sided adhesive tape 1 is improved.

The release liner 40 has release properties on both sides. That is, the release liner 40 includes a first release surface 41 that is a radially inner surface and a second release surface 42 that is a radially outer surface. The second release surface 42 is a surface that contacts the second adhesive surface 22, and the first release surface 41 is a surface that contacts the first adhesive surface 11 in a rolled state.

In the present embodiment, the release liner 40 is, for example, a release paper in which a silicone layer as a release agent is formed on both surfaces of a base material such as high-quality paper with a polyethylene laminate layer as a sealing layer interposed therebetween. (Illustration of the layered structure is omitted in the figure). Note that the structure of the release liner 40 is not limited to this, and the materials of the base material and release agent, and the material and presence or absence of the sealing layer may be changed. For example, silicone layers may be directly formed on both sides of a paper base material, which eliminates the need for a sealing layer. Alternatively, it may be a release film in which a release agent such as a silicone layer is provided on both sides of a film base material such as a polyethylene terephthalate film.

Here, in this embodiment, the release liner 40 is configured such that the first release surface 41 on the radially inner side has higher releasability than the second release surface 42 on the radially outer side. In other words, the peeling force of the first peeling surface 41 is configured to be smaller than the peeling force of the second peeling surface 42. That is, in the double-sided adhesive tape 1, when the tape body 2 is rewound together with the release liner 40 from the rolled roll, the first adhesive layer 10 is exposed on the outer peripheral surface side of the roll of the double-sided adhesive tape 1. It is configured as follows. In addition, the peeling force of the first peeling surface 41 is higher than the peeling force of the second peeling surface 42 in the entire range of peeling speeds that are considered to be applied when the double-sided adhesive tape 1 is used during the construction of the weed control sheet. It is preferable that it be small.

The thickness of each layer constituting the double-sided adhesive tape 1 is, for example, as follows. In this embodiment, the first adhesive layer 10 and the second adhesive layer 20 have the same thickness. Moreover, the base material 5 has a thickness smaller than the thickness of one of the adhesive layers 10 and 20. That is, since the first adhesive layer 10 and the second adhesive layer 20 each have a relatively large thickness, they have a structure in which fibers are intertwined, and therefore cannot be anchored to the uneven surface of the weed control sheet. It is effective and has good adhesive strength. Moreover, since the thickness of the base material 5 is relatively small, the followability of the double-sided adhesive tape 1 is increased, and the double-sided adhesive tape 1 can be more reliably adhered to the surface of the weed control sheet. One of the two adhesive layers 10, 20 may be thicker than the other. In this case, the base material 5 only needs to have a thickness smaller than the thickness of at least one of the two adhesive layers 10 and 20.

Preferably, the base material 5 has a thickness of 10 micrometers or more and 40 micrometers or less. With this configuration, the followability of the tape body 2 can be further improved. More preferably, the thickness of the base material 5 is 15 micrometers or more and 25 micrometers or less. By configuring the base material 5 to have such a thickness, the followability of the tape body 2 can be increased, and the tape body 2 can be easily cut by hand, making it easier to install the weed control sheet. will be able to do this easily.

The thickness of each layer of the double-sided adhesive tape 1 in this embodiment is as described above, but specifically, for example, it can be as follows. That is, the thickness of each of the first adhesive layer 10 and the second adhesive layer 20 may be, for example, 60 micrometers. Further, the thickness of the base material 5 may be, for example, 20 micrometers. Further, the thickness of the release liner 40 may be, for example, 110 micrometers. For example, with such a configuration, the followability of the double-sided adhesive tape 1 can be increased, and it can be reliably adhered to the surface of the weed control sheet.

The winding core 50 is, for example, a cylindrical paper tube, but is not limited thereto. For example, it may be made of other materials such as resin. Moreover, it may have another shape, for example, the outer circumferential surface and the inner circumferential surface may have a polygonal shape. Alternatively, it may be in the shape of a solid rod. In this embodiment, for example, the tape body 2 and the release liner 40 are wound around the winding core 50 into a roll shape with their ends held on the outer peripheral surface of the winding core 50. The tape body 2 and the release liner 40 are ready for use by being unwound from the rolled state.

As shown in FIG. 1, in this embodiment, the double-sided adhesive tape 1 includes a plurality of perforations 90 formed across the double-sided adhesive tape 1. The perforations 90 are formed, for example, by perforating the double-sided adhesive tape 1 in the radial direction while the double-sided adhesive tape 1 is wound around the winding core 50 in the form of a roll. That is, when the roll-shaped double-sided adhesive tape 1 is rotated around the winding core 50 and rewound, one perforation 90 is pulled out of the roll of the double-sided adhesive tape 1 every time the winding core 50 rotates once. It will appear in That is, the plurality of perforations 90 are provided at intervals from each other in the longitudinal direction of the double-sided adhesive tape 1.

FIG. 3 is a diagram showing an example of perforations 90 provided in the double-sided adhesive tape 1.

In FIG. 3, the vertical direction of the paper indicates the longitudinal direction of the double-sided adhesive tape 1, and the horizontal direction of the paper indicates the width direction of the double-sided adhesive tape 1. In this embodiment, the interval (dimension D10) between the perforations 90 adjacent to each other in the longitudinal direction is equal to the length in the circumferential direction of the outer circumferential surface in the state of being wound into a roll, as described above. Further, in each perforation, the length of the hole in the width direction (dimension D11) is, for example, about 10 mm, and the interval between the holes is about 4 mm.

Note that the method for forming the perforations 90 is not limited to the above method. The double-sided adhesive tape 1 may be wound into a roll after the perforations 90 are formed. The plurality of perforations 90 may be provided at equal intervals in the longitudinal direction of the double-sided adhesive tape 1. Further, in the present embodiment, the perforations 90 are formed in a straight line parallel to the width direction, but they may be formed obliquely to the width direction, or in a curved or zigzag shape. The double-sided adhesive tape 1 may be formed so as to cross the double-sided adhesive tape 1. For example, the perforation 90 may be formed in a wavy line shape or a V-shaped line that crosses the double-sided adhesive tape 1. Further, the distance between the perforations 90, the shape of the holes forming the perforations 90, etc. are not limited to those described above.

By providing such a perforation 90, it becomes easier to cut the double-sided adhesive tape 1 at the position of the perforation 90. Due to the structure of each layer of the double-sided adhesive tape 1 as described above, the double-sided adhesive tape 1 has the ability to be cut by hand, and the perforations 90 provided across the double-sided adhesive tape 1 make it easy to cut both sides. The adhesive tape 1 can be cut by applying appropriate force by hand without using tools such as scissors or a cutter knife, and the cutting line of the double-sided adhesive tape 1 can be cut neatly along the perforation 90. It becomes the shape. Therefore, the double-sided adhesive tape 1 can be used more easily.

In this embodiment, the width dimension (dimension D1) of the double-sided adhesive tape 1 is, for example, 10 centimeters. It is preferable that the width of the double-sided adhesive tape 1 is slightly smaller than the width of the area to be secured as an overlap margin during construction of the weed control sheet. Further, the length of one roll of double-sided adhesive tape 1 is, for example, about 20 meters. Note that the width and length of the double-sided adhesive tape 1 are not limited to these.

In this embodiment, the double-sided adhesive tape 1 can be used when applying a weed control sheet using the applicator 500.

FIG. 4 is a diagram showing the same double-sided adhesive tape 1 and an applicator 500.

The applicator 500 can be used to apply the outer peripheral surface of the double-sided adhesive tape 1 wound into a roll to an adherend. As shown in FIG. 4, the applicator 500 includes a rotating part 510 and a grip part 520 that can be held by an operator's hand. The rotating part 510 is held so as to be rotatable about a rotation axis with respect to the frame to which the gripping part 520 is attached.

In this embodiment, the rotating portion 510 has, for example, a cylindrical shape with the rotation axis being the axis of the cylindrical surface. The outer peripheral surface of the rotating part 510 has a shape that can be fitted into the winding core 50. The double-sided adhesive tape 1 is attached to the applicator 500 with the rotating part 510 inserted into the winding core 50. In other words, the rotating part 510 of the applicator 500 is attached to the winding core 50. The double-sided adhesive tape 1 attached to the applicator 500 is rotatable around the rotation axis. In this embodiment, the diameter of the rotating portion 510, that is, the inner diameter of the winding core 50 is, for example, 1.5 inches, but is not limited to this.

An operator can easily apply the double-sided adhesive tape 1 to an adherend using the applicator 500. That is, the operator holds the grip portion 520 and presses the outer peripheral surface of the double-sided adhesive tape 1 attached to the applicator 500 against the adherend. That is, since the first adhesive surface 11 is exposed on the outer peripheral surface of the double-sided adhesive tape 1, the first adhesive surface 11 is pressed against the surface of the adherend. Then, the operator rotates the double-sided adhesive tape 1 together with the rotating unit 510 by moving the applicator 500 in a direction perpendicular to the rotation axis of the rotating unit 510 while pressing the double-sided adhesive tape 1 against the adherend. and rewind the double-sided adhesive tape 1. At this time, the double-sided adhesive tape 1 is rewound with the release liner 40 still attached to the second adhesive surface 22. Thereby, the double-sided adhesive tape 1 can be attached to the adherend. Since the first adhesive surface 11 is configured to be exposed on the outside of the double-sided adhesive tape 1, the double-sided adhesive tape 1 can be easily applied to the adherend while being rolled onto the adherend using the applicator 500. It can be pasted. After pasting the double-sided adhesive tape 1 to the adherend for the required length, the operator can easily cut the double-sided adhesive tape 1 using the perforations 90. Note that the double-sided adhesive tape 1 may be cut regardless of the position of the perforation 90.

[Explanation about installing a weed control sheet using double-sided adhesive tape 1]

In this embodiment, the weed control sheet can be installed on the installation surface using the double-sided adhesive tape 1 as described above, for example, as follows. In addition, in the following explanation, the positional relationship etc. may be explained with the direction perpendicular to the installation surface as the vertical direction (the side where the weed control sheet is placed is the top), but these definitions are for convenience of explanation only. However, this does not limit the manner in which the weed control sheet using the double-sided adhesive tape 1 according to the present invention is installed or the aspect of the installation surface. The installation surface does not necessarily have to be a horizontal surface, but may be an inclined surface, a curved surface, or other undulating surface.

FIG. 5 is a sectional view illustrating an example of installing a weed control sheet in this embodiment.

In FIG. 5, as an example, a weed control laying body 900 constituted by a plurality of weed control sheets 100 is schematically shown. The weed control laying body 900 is placed on an installation surface F provided on the ground and covered with earth and sand. By covering the installation surface F with the weed prevention laying body 900, weeds and the like are prevented from growing and growing on the installation surface F.

The weed control laying body 900 includes, for example, a plurality of weed control sheets 100 and fixing pins 150. The weed control sheet 100 is, for example, provided as a roll-shaped material. The operator cuts the rolled weed control sheet 100 into a length that reaches from one end of the installation surface F to the other end. Then, a plurality of the obtained weed control sheets 100 are laid so that a portion of both ends in the width direction overlap each other vertically so that there is no gap, and both ends in the width direction of each weed control sheet 100 are fixed with a plurality of fixing pins. 150 to fix it on the installation surface F. The fixing pin 150 is driven into the installation surface F based on the information on the weed control sheet 100 so as to penetrate the weed control sheet 100. Thereby, the weed control laying body 900 composed of the plurality of weed control sheets 100 is installed on the installation surface F.

In this embodiment, the double-sided adhesive tape 1 is placed between the plurality of weed control sheets 100 installed as described above, and fixes the adjacent weed control sheets 100 to each other. An example of a method for installing two weed control sheets 100 (first weed control sheet 101, second weed control sheet 102) adjacent to each other using double-sided adhesive tape 1 will be described. Note that the names "first weed control sheet 101" and "second weed control sheet 102" are simply used to distinguish any two sheets among the plurality of weed control sheets 100, and are used only to distinguish between any two sheets among the plurality of weed control sheets 100. The position and installation order among the plurality of weed control sheets 100 constituting the body 900 are not limited.

FIG. 6 is a first diagram showing an example of a method for installing a weed control sheet using the same double-sided adhesive tape 1. FIG. 7 is a second diagram showing an example of the method of installing the weed control sheet.

6 and 7, the installation surface F is shown viewed from above (plan view). The arrow shown in FIG. 6 indicates the longitudinal direction of the first weed control sheet 101.

(Step S11) First, the first weed control sheet 101 is placed on the installation surface F.

(Step S12) Next, the first adhesive of the double-sided adhesive tape 1 is placed along the edge of the upper surface of the arranged first weed control sheet 101 on the side where the second weed control sheet 102 is arranged. Paste side 11. As described above, this operation involves rotating the rotating part 510 while pressing the outer peripheral surface of the double-sided adhesive tape 1 against the first weed control sheet 101 using the applicator 500 to which the double-sided adhesive tape 1 is attached. This can be done by The double-sided adhesive tape 1 is not limited to the end of the first weed control sheet 101, but may be attached to a part of the upper surface of the first weed control sheet 101.

In this embodiment, when performing such work, the double-sided adhesive tape 1 is applied while pushing the applicator 500 forward (in the direction of the arrow) using the grip part 520, as shown by the arrow in step S12. is desirable. For example, when viewed from above the first weed control sheet 101, the applicator 500 is placed in a position where the rotating part 510 is in front of the gripping part 520, and By pressing the applicator 500 forward, the double-sided adhesive tape 1 can be applied while pushing the applicator 500 forward. By pasting while pressing the applicator 500, the load applied to the double-sided adhesive tape 1 pressed against the first weed control sheet 101 can be easily increased, and the first adhesive surface 11 can be applied to the first weed control sheet 101. It can be made to adhere well to. Note that the direction in which the applicator 500 is used is not limited to this, and the double-sided adhesive tape 1 may be applied while pulling the applicator 500 toward you in the opposite direction to that described above.

After the double-sided adhesive tape 1 is attached to the first weed control sheet 101 over the entire lengthwise area, the double-sided adhesive tape 1 is cut. The double-sided adhesive tape 1 can be cut using the perforations 90, for example.

At this time, the release liner 40 remains attached to the second adhesive surface 22 of the double-sided adhesive tape 1, and the first release surface 41 of the release liner 40 is exposed upward.

(Step S13) The second weed control sheet 102 is temporarily placed over the first weed control sheet 101 to which the first adhesive surface 11 of the double-sided adhesive tape 1 is attached. For example, the second weed control sheet 102 is arranged so that its longitudinal direction is parallel to the longitudinal direction of the first weed control sheet 101, and the double-sided adhesive tape 1 is attached to the edge of the second weed control sheet 102. placed in a covered position. That is, since the width dimension of the double-sided adhesive tape 1 is, for example, 10 cm, the first weed control sheet 101 and the second weed control sheet 102 are arranged so as to overlap vertically by, for example, about 10 cm. .

(Step S14) Turn over the edge of the second weed control sheet 102 placed as necessary, remove the release liner 40 of the double-sided adhesive tape 1 stuck to the first weed control sheet 101, and The second adhesive surface 22 of No. 1 is exposed.

(Step S15) The second weed control sheet 102 is placed on the first weed control sheet 101 so as to cover the second adhesive surface 22.

(Step S16) The second weed control sheet 102 is pressed (rolled) downward from above the second weed control sheet 102 at the portion where the double-sided adhesive tape 1 is sandwiched. At the portion where the double-sided adhesive tape 1 is sandwiched, one of the first weed control sheet 101 and the second weed control sheet 102 is pressed toward the other. The compaction may be performed, for example, by an operator pressing his or her hands or feet, or may be performed using an instrument. Thereby, the second weed control sheet 102 is fixed to the first weed control sheet 101 using the double-sided adhesive tape 1.

In addition, in this embodiment, the fixing pin 150 is driven into the portion where the first weed control sheet 101 and the second weed control sheet 102 are overlapped. As a result, wind or the like blows between the first weed control sheet 101 and the second weed control sheet 102 and the installation surface F, and the weed control sheet 100 is lifted up, or the weed control sheet 101 is moved against the installation surface F. This can prevent it from shifting.

By performing the above installation method every time two adjacent sheets of the plurality of weed control sheets 100 are overlapped, the weed control sheet 100 can be easily installed so as to cover the entire installation surface F. can.

Note that the fixing pin 150 may not be used. Moreover, temporarily arranging the second weed control sheet 102 (step S13) may be omitted.

Further, the double-sided adhesive tape 1 does not necessarily have to be applied using the applicator 500. Further, for example, the weed control sheet 100 may be installed using the weed control sheet 100 to which the first adhesive surface 11 of the double-sided adhesive tape 1 has been pasted in advance at a location different from the installation surface F. . In this case, the method of installing the weed control sheet is to start from the first weed control sheet 101 on which the first adhesive surface 11 of the double-sided adhesive tape 1 is pasted to at least a part of the surface, and then start with the release liner 40 of the double-sided adhesive tape 1. to expose the second adhesive surface 22 of the double-sided adhesive tape 1, and to arrange the second weed control sheet 102 with respect to the first weed control sheet 101 so as to cover the second adhesive surface 22. and pressing one of the first weed control sheet 101 and the second weed control sheet 102 toward the other in the area where the double-sided adhesive tape 1 is sandwiched. In this case, the first weed control sheet 101 to which the first adhesive surface 11 of the double-sided adhesive tape 1 has been pasted is placed on the second weed control sheet 102 that has been placed on the installation surface F in advance. , the second adhesive surface 22 of the double-sided adhesive tape 1 may adhere to the second weed control sheet 102.

As explained above, in this embodiment, the weed control sheets 100 can be bonded together using the double-sided adhesive tape 1 without using an adhesive or the like. This has the following advantages: That is, since the adhesive layers 10 and 20 are applied in advance to both sides of the base material 5, there is no unevenness in the amount of adhesive used, and there is no need to manage open time or the like. Regardless of the operator's skill or the environment, a certain amount of adhesive is used and it can be expected that adhesive strength will be reliably obtained, making it less likely that poor adhesion or poor adhesion will occur, and ensuring uniform installation results. Obtainable. Further, in this embodiment, since the double-sided adhesive tape 1 can be rolled onto the weed control sheet 100 using the applicator 500, the work efficiency is increased and the installation work can be performed quickly.

The weed control sheet 100 made of woven fabric or non-woven fabric, which is the adherend in this embodiment, is an aggregate of fibers and has a rough surface, so conventional double-sided adhesive tape has sufficient adhesive strength. can't get it. In this embodiment, as described above, since the double-sided adhesive tape 1 having the base material 5 mainly composed of linear low-density polyethylene and the two adhesive layers 11 and 12 is used, the weed control sheet 100 The ability to follow the surface becomes higher, and higher adhesive strength can be obtained. In addition, the weed control sheet 100 can be installed on various installation surfaces F, and the double-sided adhesive tape 1 can well follow the surface of the weed control sheet 100 placed, for example, on an uneven installation surface F. High adhesive strength can be obtained.

(others)

FIG. 8 is a diagram showing an applicator 501 according to a modified example of the present embodiment.

As shown in FIG. 8, the applicator 501 has a grip portion 521 that is longer than the grip portion 520 of the applicator 500 of the above-described embodiment. By using such an applicator 501 having a long length from the rotating part 510 of the applicator 501 to the end of the gripping part 521 (hereinafter referred to as the total length), the operator is forced to bend down, which places a large burden on the body. The double-sided adhesive tape 1 can be easily pasted while standing without being forced to take a posture. Furthermore, since the double-sided adhesive tape 1 can be pasted while walking, the speed of the work can be improved and the work efficiency can be increased. In particular, by applying the double-sided adhesive tape 1 while pushing the applicator 501 forward as shown by the arrow in the figure, the double-sided adhesive tape 1 can be adhered well to the surface of the weed control sheet 100. Note that the total length of the applicator 501 can be, for example, about 120 centimeters, but it may be longer or shorter than this. For example, by making it possible to use the applicator 501 with a total length of 70 centimeters or more, the double-sided adhesive tape 1 can be easily applied in a relatively comfortable posture.

Such a grip portion 521 may be configured to be expandable and retractable. Thereby, the applicator 501 can be used by adjusting the length of the grip portion 521 to an appropriate length according to the topography of the place where the weed control sheet 100 is installed, the body shape of the worker, etc. Moreover, the gripping part 521 may be configured using a rod-shaped joint handle that can be attached to the gripping part 520 of the applicator 500 in the above-described embodiment. When necessary depending on the application, by attaching a joint handle to the grip part 520 of the applicator 500 to configure the applicator 501 with a long overall length, it is possible to arrange the weed control sheet 100 on the installation surface F of various terrains. Therefore, it is possible to easily attach the double-sided adhesive tape 1 to the weed control sheet 100.

The applicator 501 having such a long overall length is also useful, for example, when placing the weed control sheet 100 on an installation surface that is a slope such as a slope. In order to arrange the weed control sheet 100 on such an installation surface, it may be necessary to attach the double-sided adhesive tape 1 to an area with a difference in height. In such a case, by using the long applicator 501, the double-sided adhesive tape 1 can be applied to a relatively wide area while using one scaffold as a foothold, thereby improving work efficiency. I can do it.

The present invention is not limited to the embodiments described above, and various modifications can be made, which are also included within the scope of the present invention.

Perforations as described in the embodiments described above do not necessarily have to be provided. For example, instead of perforations, the double-sided adhesive tape may be provided with cuts cut inward in the width direction from the side edges of the double-sided adhesive tape. The double-sided adhesive tape can be easily cut using such cuts. For example, cuts or perforations may be provided only in the release liner. Further, for example, the double-sided adhesive tape does not need to be provided with perforations, cuts, or the like. Even with such double-sided adhesive tapes that do not have perforations or cuts, weed control sheets can be easily installed by cutting them by hand or using a knife such as scissors. I can do it.

The double-sided adhesive tape may be configured such that a release liner having releasability is attached to at least one side of each of both sides of the tape body. Moreover, it may be used without using the applicator as described above. When unwound, the outer peripheral surface of the double-sided adhesive tape roll becomes the release surface of the release liner, and the tape body may be located inside the outer peripheral surface of the release liner.

Each of the constituent elements of the embodiments described above may be replaced or combined with constituent elements of other embodiments as appropriate. Moreover, some components and functions may be omitted from the embodiments described above.

As described above, the double-sided adhesive tape according to the present invention has the effect that a weed control sheet made of woven fabric or non-woven fabric can be easily installed, and is useful as a double-sided adhesive tape.

1 Double-sided adhesive tape 2 Tape body 5 Base material 10 First adhesive layer 11 First adhesive surface 20 Second adhesive layer 22 Second adhesive surface 40 Release liner 41 First release surface 42 Second release surface 50 Winding core 90 Sewing machine Eyes 100 Weed control sheet 101 First weed control sheet 102 Second weed control sheet 150 Fixing pin 500, 501 Applicator 510 Rotating part 520, 521 Gripping part 900 Weed control laying body

Claims (9)

A double-sided adhesive tape for bonding weed control sheets made of woven fabric or non-woven fabric,
A base material whose main component is linear low-density polyethylene,
A double-sided adhesive tape comprising two adhesive layers arranged on both sides of the base material. The double-sided adhesive tape according to claim 1, wherein each of the two adhesive layers contains an acrylic adhesive as a main component. The double-sided adhesive tape according to claim 1 or 2, wherein the base material has a thickness smaller than the thickness of at least one of the two adhesive layers. The double-sided adhesive tape according to any one of claims 1 to 3, wherein the base material has a thickness of 10 micrometers or more and 40 micrometers or less. comprising a plurality of perforations formed across the double-sided adhesive tape,
The double-sided adhesive tape according to any one of claims 1 to 4, wherein the plurality of perforations are provided at intervals from each other in the longitudinal direction of the double-sided adhesive tape. a winding core to which a rotating part of an applicator is attached for applying one side of the double-sided adhesive tape to an adherend;
one release liner with release properties on both sides,
Any one of claims 1 to 5, wherein the tape body including the base material and the two adhesive layers and the release liner are overlapped and wound in a roll shape around the winding core. Double-sided adhesive tape as described in . The release liner is configured such that a radially inner surface has higher release properties than a radially outer surface,
The double-sided adhesive tape according to claim 6, wherein when the tape body is unwound together with the release liner from the wound roll, one of the adhesive layers is exposed on the outer peripheral surface of the roll. A method for installing a weed control sheet made of woven fabric or nonwoven fabric using the double-sided adhesive tape according to any one of claims 1 to 7,
removing the release liner of the double-sided adhesive tape from the first weed control sheet, on which the first adhesive surface of the double-sided adhesive tape is attached to a part of the surface, and exposing the second adhesive surface of the double-sided adhesive tape; and,
arranging a second weed control sheet relative to the first weed control sheet so as to cover the second adhesive surface;
A method for installing a weed control sheet, comprising the step of pressing one of the first weed control sheet and the second weed control sheet toward the other in a region where the double-sided adhesive tape is sandwiched. A method for installing a weed control sheet made of woven fabric or non-woven fabric using an applicator having a rotating part to which the double-sided adhesive tape according to claim 6 or 7 is attached,
a step of placing a first weed control sheet on the installation surface;
Using the applicator, press the outer circumferential surface of the double-sided adhesive tape onto a part of the upper surface of the first weed control sheet placed on the first weed control sheet while rotating the rotary unit, pasting a first adhesive side of the double-sided adhesive tape;
removing the release liner of the double-sided adhesive tape affixed to the first weed control sheet to expose a second adhesive surface of the double-sided adhesive tape;
arranging a second weed control sheet on the first weed control sheet so as to cover the second adhesive surface;
A method for installing a weed control sheet, comprising the step of pressing the second weed control sheet downward from above the second weed control sheet in a region where the double-sided adhesive tape is sandwiched.

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