JP6994391B2 - Laminated Sheets, Security Systems, and Laminated Sheet Manufacturing Methods - Google Patents

Description

The present invention relates to a laminated sheet, a security system, and a method for manufacturing the laminated sheet.

Conventionally, various measures have been taken for windowpanes for the purpose of crime prevention. For example, Patent Document 1 below discloses a window glass incorporating a flat glass having a large number of steel wires inserted in parallel. In this window glass, each steel wire is electrically connected by a conductive line so that the steel wires can be energized in series at both ends of the plate glass where both ends of each steel wire in one window glass are exposed. , The energizing terminals are provided at both ends of the connection, and the energizing terminals and the alarm device are electrically connected. According to this window glass, the energization is cut off and the alarm device is activated by the destruction of the steel wire due to the destruction of the flat glass.

However, in the window glass disclosed in Patent Document 1, since the steel wire is inserted inside the flat glass, the versatility is low and the mounting work is difficult. Therefore, there is a demand for a crime prevention system that is highly versatile and can be easily installed.

On the other hand, Patent Document 2 below discloses an anti-theft sensor in which a sheet having a thin line-shaped conductor arranged on a supporting base material is attached to the base material via an adhesive. According to such an anti-theft sensor, it can be attached to an existing window glass later, so that it is highly versatile and easy to install.

Japanese Unexamined Patent Publication No. 2009-275490 Japanese Unexamined Patent Publication No. 2014-194700

However, in the anti-theft sensor disclosed in Patent Document 2, since the sensor (fine linear conductor) is arranged between the support base material and the pressure-sensitive adhesive, the pressure-sensitive adhesive does not come into direct contact with the support base material. There is a portion, and there is a risk that the adhesion between the supporting base material and the pressure-sensitive adhesive layer will decrease.

The present invention has been made in view of the above circumstances, and provides a method for manufacturing a laminated sheet and a laminated sheet having high versatility and easy attachment, and having high adhesion between the supporting base material and the pressure-sensitive adhesive layer. The purpose is.

The laminated sheet according to the present invention that achieves the above object is provided on the surface of the support base material and the support base material, and the outer surface of the adhesive layer has adhesiveness, and the inside of the pressure-sensitive adhesive layer is formed along the surface direction. , A conductive wire rod that is continuously patterned so as to be written in one stroke .

Further, in the method for producing a laminated sheet according to the present invention, which achieves the above object, a first laminated body composed of a release liner and a first adhesive layer is conveyed, and the first adhesive layer of the first laminated body is conveyed. On the side surface, a wire rod is arranged so that the surface is continuously patterned so as to be written in one stroke along the surface direction, and a second laminated body composed of a supporting base material and a second adhesive layer is formed. , The second pressure-sensitive adhesive layer is arranged so as to be in contact with the first pressure-sensitive adhesive layer.

According to the above-mentioned laminated sheet, since it has a sheet shape, it is sufficient to cut the sheet according to the window glass to be targeted at the construction site, so that it is highly versatile. Further, since the laminated sheet can be attached to the window glass by the adhesive layer, it can be easily attached to the window glass. Further, since the conductive wire is provided inside the pressure-sensitive adhesive layer, there is no wire between the supporting base material and the pressure-sensitive adhesive layer. Therefore, the adhesion between the supporting base material and the pressure-sensitive adhesive layer is improved. Therefore, it is possible to provide a laminated sheet having high versatility and easy attachment, and having high adhesion between the supporting base material and the pressure-sensitive adhesive layer.

It is a schematic diagram which shows the appearance that the laminated sheet of the crime prevention system which concerns on this embodiment is attached to a window glass. It is a schematic diagram which shows the crime prevention system which concerns on this embodiment. It is a schematic diagram for demonstrating the manufacturing method of the laminated sheet of the crime prevention system which concerns on this embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description will be omitted. In addition, the dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.

Hereinafter, the crime prevention system 1 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic view showing how the laminated sheet 10 of the security system 1 according to the present embodiment is attached to the window glass W. FIG. 2 is a schematic view showing the crime prevention system 1 according to the present embodiment. In FIG. 2, the two-dot chain line shows a cross-sectional view of part A.

As shown in FIG. 1, the laminated sheet 10 according to the present embodiment is attached to the window glass W so as to avoid the crescent lock C. The laminated sheet 10 is attached to the indoor side, and functions as a sensor by breaking the wire rod 13 in response to an impact from the outdoor side, and also functions as a prevention of scattering of the window glass W. Further, the laminated sheet 10 also has a function of strengthening the window glass W by being attached to the window glass W.

As shown in FIG. 2, the crime prevention system 1 has a laminated sheet 10 attached to the window glass W, a detection unit 20 for detecting a disconnection of the wire rod 13, and an alarm when the detection unit 20 detects the disconnection of the wire rod 13. It has a transmission unit 30 and a transmission unit 30 for transmitting.

First, the configuration of the laminated sheet 10 will be described.

As shown in FIG. 2, the laminated sheet 10 has a support base material 11, an adhesive layer 12, a wire rod 13, and a release liner 14.

The support base material 11 serves, for example, as a base material when the laminated sheet 10 is attached to the window glass W. Examples of the material constituting the support base material 11 include polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), and polycarbonate.

The thickness of the supporting base material 11 is not particularly limited, but is, for example, 10 to 100 μm.

Further, an easy-adhesion layer (primer layer) may be provided on one side or both sides of the support base material 11. Further, one side or both sides of the support base material 11 may be subjected to surface treatment such as corona treatment and plasma treatment.

The pressure-sensitive adhesive layer 12 is a member provided for attaching the laminated sheet 10 to the window glass W. The outer surface of the pressure-sensitive adhesive layer 12 has adhesiveness.

As shown in FIG. 2, the pressure-sensitive adhesive layer 12 has a first pressure-sensitive adhesive layer 12A located on the release liner 14 side and a second pressure-sensitive adhesive layer 12B located on the support base material 11 side.

The pressure-sensitive adhesive used for the pressure-sensitive adhesive layer 12 is not particularly limited, and is an acrylic pressure-sensitive adhesive, a rubber-based pressure-sensitive adhesive, a silicone-based pressure-sensitive adhesive, a urethane-based pressure-sensitive adhesive, a polyester-based pressure-sensitive adhesive, and a styrene-diene block copolymer pressure-sensitive adhesive. Agents, vinyl alkyl ether-based pressure-sensitive adhesives, polyamide-based pressure-sensitive adhesives, fluorine-based pressure-sensitive adhesives, and the like can be used. The above-mentioned pressure-sensitive adhesive may be used alone or in combination of two or more. Further, the pressure-sensitive adhesives used for the pressure-sensitive adhesive layers 12A and 12B may be different or the same, but they are preferably the same from the viewpoint of adhesion.

As the pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive can be particularly preferably used from the viewpoint of adhesive reliability. The acrylic polymer constituting the acrylic pressure-sensitive adhesive contains a (meth) acrylic acid alkyl ester as a monomer main component, and is a monomer (copolymerizable) that can be copolymerized with a (meth) acrylic acid alkyl ester as needed. It is formed by using a monomer). Here, the main component means that it is 50% by mass or more (upper limit 100% by mass) in the monomer, preferably 65% by mass or more, and more preferably 85% by mass or more.

Examples of (meth) acrylic acid alkyl esters are methyl (meth) acrylic acid, ethyl (meth) acrylic acid, n-propyl (meth) acrylic acid, isopropyl (meth) acrylic acid, n-butyl (meth) acrylic acid. , (Meta) isobutyl acrylate, (meth) n-pentyl acrylate, (meth) n-hexyl acrylate, (meth) cyclohexyl acrylate, (meth) 2-ethylhexyl acrylate, (meth) isooctyl acrylate, ( Examples thereof include decyl acrylate, dodecyl (meth) acrylate, myristyl (meth) acrylate, palmityl (meth) acrylate, and stearyl (meth) acrylate. These may be used alone or in combination of two or more. Above all, from the viewpoint of adhesive performance, the (meth) acrylic acid alkyl ester is preferably 2-ethylhexyl (meth) acrylate and / or butyl (meth) acrylate.

Examples of monomers copolymerizable with (meth) acrylic acid alkyl esters include aromatic vinyl compounds such as styrene and substituted styrene; vinyl esters such as vinyl acetate; (meth) acrylic acid and itaconic acid. Carboxyl group-containing monomers such as maleic acid, fumaric acid, crotonic acid, isocrotonic acid or anhydrides thereof; amide group-containing monomers such as acrylamide, metaacrylamide, N-vinylpyrrolidone, N, N-dimethylacrylamide; ( Examples thereof include hydroxyl group-containing monomers such as (meth) hydroxyalkyl acrylate such as 2-hydroxyethyl acrylate, 2-hydroxypropyl (meth) acrylate, and 4-hydroxybutyl (meth) acrylate. These may be used alone or in combination of two or more.

When a copolymerizable monomer is used, it is preferably 0.1 to 35% by mass, more preferably 1 to 15% by mass, among the monomer components constituting the acrylic polymer.

The weight average molecular weight of the acrylic polymer is not particularly limited, but is preferably 100,000 to 1,000,000. The weight average molecular weight is a polystyrene-equivalent value measured by a gel permeation chromatography (GPC) method.

The pressure-sensitive adhesive may contain a cross-linking agent in addition to the acrylic polymer. Examples of the cross-linking agent include isocyanate-based cross-linking agents, epoxy-based cross-linking agents, and metal chelate-based cross-linking agents. The amount of the cross-linking agent added is preferably 0.001 to 10 parts by mass, and more preferably 0.005 to 0.5 parts by mass with respect to 100 parts by mass of the acrylic polymer.

If necessary, a colorant, a filler, an antistatic agent, a tack fire, a wetting agent, a leveling agent, a thickener, an antifoaming agent, an antiseptic, and the like can be appropriately added to the pressure-sensitive adhesive layer 12.

The thickness of the pressure-sensitive adhesive layer 12 is not particularly limited, but is preferably in the range of 10 to 100 μm from the viewpoint of tackiness and thinning.

The wire rod 13 has conductivity. As shown in FIG. 2, the wire rod 13 is provided between the first pressure-sensitive adhesive layer 12A and the second pressure-sensitive adhesive layer 12B. In other words, the wire rod 13 is provided inside the pressure-sensitive adhesive layer 12. By providing the wire rod 13 inside the pressure-sensitive adhesive layer 12 in this way, the pressure-sensitive adhesive layer 12 serves as a cushioning material, and the wire rod 13 is prevented from being broken by an unintended physical external force. Further, a part of the wire rod 13 (near the one end 13a and the other end 13b) is provided so as to extend to the outside of the sheet.

As shown in FIG. 2, the wire rod 13 is continuously patterned from one end 13a to the other end 13b along the surface direction (left-right direction in FIG. 2) so as to be written in one stroke. Since the wire rod 13 is formed so as to be written in one stroke in this way, one end 13a and the other end 13b of the wire rod 13 may be connected to the detection unit 20, so that the connection is easy.

Further, the wire rod 13 is formed in a pattern so as to repeatedly meander. Further, the wire rods 13 are patterned so as not to overlap each other. Further, the pitch L of the wires 13 adjacent to each other in the vertical direction in FIG. 2 is, for example, 0.1 cm to 1.5 cm, but is not limited thereto.

By forming the pattern of the wire rod 13 in this way, the wire rod 13 is arranged so as to cover the entire surface in a wide area of the sheet. Therefore, even if the broken area of the window glass W is small, the broken can be detected.

The material constituting the wire rod 13 is at least one of tungsten, molybdenum, stainless steel, and carbon nanotubes. These materials are easier to form patterns than materials such as ITO (indium tin oxide). Further, tungsten and molybdenum are preferable from the viewpoint that they are suitably broken when the window glass W is broken.

When carbon nanotubes are used as the wire rod 13, it is preferably a linear body containing carbon nanotubes.

The carbon nanotube linear body is, for example, a carbon nanotube forest (a growth body in which a plurality of carbon nanotubes are grown on a substrate so as to be oriented in a direction perpendicular to the substrate, and is referred to as an “array”. It is obtained by pulling out carbon nanotubes in the form of a sheet from the end of the (also), bundling the pulled out carbon nanotube sheets, and then twisting the bundle of carbon nanotubes. The linear body of such carbon nanotubes can be produced by the method described in International Publication No. 2017/086395.

The diameter of the wire rod 13 is not particularly limited, but is preferably 15 to 100 μm. The diameter here refers to the average diameter, and the average diameter is the average value obtained by measuring the maximum diameter from the cross-sectional shape at five places of the wire rod by microscopic observation or the like. By making the wire rod 13 having such a diameter, it has an effect of maintaining the transparency of the window glass W, and the wire rod 13 is not visible from the indoor side or the outdoor side, and the aesthetic appearance is not spoiled. Further, since the wire rod 13 becomes visible when approaching the window glass W, it is recognized that the crime prevention system 1 is installed, and it also has a deterrent effect against an intruder destroying the window glass W.

The release liner 14 is a member having a function of protecting the pressure-sensitive adhesive layer 12 and preventing a decrease in adhesiveness. Then, the release liner 14 is peeled off from the pressure-sensitive adhesive layer 12 when it is attached to the window glass W. Therefore, the laminated sheet 10 in the present invention also includes a laminated sheet that does not have the release liner 14 after the release liner 14 has been peeled off.

The release liner 14 is not particularly limited, but is a polyester film such as polyethylene terephthalate, polybutylene terephthalate, or polyethylene naphthalate, or a plastic film such as a polyolefin film such as polypropylene or polyethylene; high-quality paper, glassin paper, kraft paper, etc. , Clay coat paper and other papers.

The thickness of the release liner 14 is usually about 10 to 400 μm. Further, the surface of the release liner 14 may be provided with a layer made of a release agent made of silicone or the like for improving the release property of the pressure-sensitive adhesive layer 12. When such a layer is provided, the thickness of the layer is usually about 0.01 to 5 μm.

The detection unit 20 is connected to one end 13a and the other end 13b of the wire rod 13 and is electrically connected to the wire rod 13. The detection unit 20 may use an existing detection unit as long as it can detect that the current flowing through the wire 13 has been cut and can send a signal to the transmission unit 30 when the disconnection is detected. It should be noted that a detection unit integrated with a buzzer as a transmission unit, which will be described later, may be used. A battery is connected to the detection unit 20, and power is supplied to the detection unit 20.

The transmitting unit 30 is connected to the detection unit 20 and emits an alarm when the detecting unit 20 detects a disconnection of the wire rod 13. The transmitter 30 is, for example, an LED lamp and / or a buzzer. Further, the transmitting unit 30 may be of a type connected to a mobile phone or a security company to make a report.

<Manufacturing method of laminated sheet>
Next, a method for manufacturing the laminated sheet 10 according to the present embodiment will be described with reference to FIG. FIG. 3 is a diagram for explaining a method of manufacturing the laminated sheet 10 of the crime prevention system 1 according to the present embodiment.

First, the first laminated body 51 composed of the release liner 14 wound in a roll shape and the first pressure-sensitive adhesive layer 12A is conveyed to the left.

Next, the wire rod 13 wound in a roll shape on the surface of the first pressure-sensitive adhesive layer 12A side (upper side in FIG. 3) of the first laminated body 51 being conveyed so as to scan the surface along the plane direction. Is placed. At this time, the wire rod 13 is patterned as shown in FIG.

Next, the second laminated body 52 composed of the support base material 11 wound in a roll shape and the second pressure-sensitive adhesive layer 12B is arranged so that the second pressure-sensitive adhesive layer 12B is in contact with the first pressure-sensitive adhesive layer 12A. That is, in the second laminated body 52, the second laminated body 52 is arranged on the first laminated body 51 so that the second pressure-sensitive adhesive layer 12B is on the lower side. The laminated sheet 10 is manufactured by the above steps.

<How to use the security system>
As shown in FIG. 1, the user peels off the release liner 14 from the laminated sheet 10 and attaches the laminated sheet 10 to a predetermined position on the window glass W.

Then, when the intruder breaks the window glass W, the wire rod 13 breaks, and the detection unit 20 detects the breakage of the wire rod 13. Then, the transmission unit 30 transmits an alarm by a buzzer or an LED light.

As described above, the laminated sheet 10 according to the present embodiment includes the support base material 11, the pressure-sensitive adhesive layer 12 provided on the surface of the support base material 11, and the outer surface having adhesiveness, and the pressure-sensitive adhesive layer 12. It has a conductive wire rod 13 that is patterned so as to scan the inside along the plane direction. According to the laminated sheet 10 configured in this way, since it has a sheet shape, it is sufficient to cut the sheet according to the window glass W which is the target at the construction site, and thus the versatility is high. Further, since the laminated sheet 10 can be attached to the window glass W by the adhesive layer 12, it can be easily attached to the window glass W. Further, since the conductive wire rod 13 is provided inside the pressure-sensitive adhesive layer 12, the wire rod 13 does not exist between the support base material 11 and the pressure-sensitive adhesive layer 12. Therefore, the adhesion between the support base material 11 and the pressure-sensitive adhesive layer 12 is improved. Therefore, it is possible to provide a laminated sheet 10 having high versatility and easy attachment, and having high adhesion between the support base material 11 and the pressure-sensitive adhesive layer 12.

The diameter of the wire rod 13 is 15 to 100 μm. By making the wire rod 13 having such a diameter, it has an effect of maintaining the transparency of the window glass W, and the wire rod 13 is not visible from the indoor side or the outdoor side, and the aesthetic appearance is not spoiled. Further, since the wire rod 13 becomes visible when approaching the window glass W, it is recognized that the crime prevention system 1 is installed, and it also has a deterrent effect against an intruder destroying the window glass W.

Further, the wire rod 13 contains at least one material selected from the group consisting of tungsten, molybdenum, stainless steel, and carbon nanotubes. According to the laminated sheet 10 configured in this way, the pattern formation of the wire rod 13 becomes easy.

Further, the wire rod 13 is continuously scanned so as to be written in one stroke. According to the laminated sheet 10 configured in this way, cracking of the window glass W can be suitably detected.

Further, the laminated sheet 10 further has a release liner 14 provided on the surface of the pressure-sensitive adhesive layer 12 on the side opposite to the side on which the support base material 11 is provided. According to the laminated sheet 10 configured in this way, it is possible to suitably prevent a decrease in the adhesiveness of the pressure-sensitive adhesive layer 12 before construction.

Further, as described above, the crime prevention system 1 according to the present embodiment is electrically connected to the above-mentioned laminated sheet 10 and the wire rod 13, and is connected to the detection unit 20 and the detection unit 20 for detecting the disconnection of the wire rod 13. It has a transmission unit 30 that is connected and emits an alarm when the detection unit 20 detects a disconnection of the wire rod 13. According to the security system 1 configured in this way, it is possible to provide a security system 1 having high versatility and easy attachment, and also having high adhesion between the support base material 11 and the pressure-sensitive adhesive layer 12.

Further, as described above, in the method for manufacturing the laminated sheet 10 according to the present embodiment, the first laminated body 51 composed of the release liner 14 and the first adhesive layer 12A is conveyed and conveyed. A wire rod 13 is arranged on the surface of the 51 on the first pressure-sensitive adhesive layer 12A side so as to scan the surface along the surface direction, and the second laminated body 52 composed of the support base material 11 and the second pressure-sensitive adhesive layer 12B is formed. The second pressure-sensitive adhesive layer 12B is arranged so as to be in contact with the first pressure-sensitive adhesive layer 12A. According to the laminated sheet 10 manufactured by this manufacturing method, it is possible to provide a laminated sheet 10 having high versatility and easy attachment, and having high adhesion between the support base material 11 and the pressure-sensitive adhesive layer 12. ..

Although the security system 1 according to the present invention has been described above through the embodiments, the present invention is not limited to the configuration described in the embodiments and can be appropriately modified based on the description of the scope of claims. Is.

For example, in the above-described embodiment, the support base material 11 is provided on the surface of the pressure-sensitive adhesive layer 12. However, a release liner may be used as the support base material 11. At this time, the laminated sheet functions as a so-called double-sided tape.

Further, in the above-described embodiment, the laminated sheet 10 is attached to the window glass W, but may be attached to a vending machine, a showcase, or the like.

Further, the method for manufacturing the laminated sheet is not limited to the above-mentioned manufacturing method, and a method of laminating the release liner 14, the first pressure-sensitive adhesive layer 12A, the second pressure-sensitive adhesive layer 12B, and the supporting base material 11 in order may be used. ..

Further, in the above-described embodiment, the wire rod 13 is patterned so as to be continuously scanned by one stroke. However, as in JP-A-2009-275490, the wire rod may be composed of a plurality of linear shapes and may have a connection portion for electrically connecting the wire rods at both ends.

Further, in the above-described embodiment, the laminated sheet is attached to a part of the window glass W, but may be attached to the entire window glass W.

Further, in the above-described embodiment, the pressure-sensitive adhesive layer 12 includes a first pressure-sensitive adhesive layer 12A and a second pressure-sensitive adhesive layer 12B, and the wire rod 13 is arranged between the first pressure-sensitive adhesive layer 12A and the second pressure-sensitive adhesive layer 12B. Was done. However, the pressure-sensitive adhesive layer may be composed of one layer, and the wire rod may be provided inside the pressure-sensitive adhesive layer composed of one layer.

Further, the supporting base material of the laminated sheet is not transparent, but may be translucent to have a cloudy glass tone. Further, a design layer having a pattern may be provided on the supporting base material.

1 Security system,
10 laminated sheet,
11 Supporting base material,
12 Adhesive layer,
12A 1st adhesive layer,
12B second adhesive layer,
13 wire rod,
14 Peeling liner,
20 detector,
30 Caller,
51 First laminated body,
52 Second laminated body,
W window glass.

Claims (6)

Supporting base material and
A pressure-sensitive adhesive layer provided on the surface of the support base material and having an outer surface having adhesiveness,
A laminated sheet having a conductive wire rod in which the inside of the pressure-sensitive adhesive layer is continuously patterned along the plane direction so as to be a single stroke . The laminated sheet according to claim 1, wherein the wire rod has a diameter of 15 to 100 μm. The laminated sheet according to claim 1 or 2, wherein the wire includes at least one material selected from the group consisting of tungsten, molybdenum, stainless steel, and carbon nanotubes. The laminated sheet according to any one of claims 1 to 3 , further comprising a release liner provided on the surface of the pressure-sensitive adhesive layer on the side opposite to the side on which the support base material is provided. The laminated sheet according to any one of claims 1 to 4 , and the laminated sheet.
A detection unit that is electrically connected to the wire and detects the disconnection of the wire.
A crime prevention system including a transmission unit connected to the detection unit and issuing an alarm when the detection unit detects a disconnection of the wire rod. Transport the first laminate consisting of the release liner and the first adhesive layer,
A wire rod is arranged on the surface of the first laminated body on the side of the first pressure-sensitive adhesive layer so that the surface is continuously patterned along the surface direction so as to be written in one stroke .
A method for producing a laminated sheet, in which a second laminated body composed of a supporting base material and a second pressure-sensitive adhesive layer is arranged so that the second pressure-sensitive adhesive layer is in contact with the first pressure-sensitive adhesive layer.

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