JP2001317171A - Nonslip tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a nonslip tape capable of being easily manufactured, preventing a defect from occurring during a production, and providing an excellent follow-up capability to irregularities. SOLUTION: This slip prevention tape comprises a base film having a resin layer with anti-skid function provided on the surface thereof. The base film further comprises a composite material formed of a resin film and a metal foil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-slip tape, and more particularly, to a base film having malleability, which is free from breakage or damage due to bending or the like at the time of manufacture, making use of malleability. The present invention relates to an anti-slip tape which can follow an uneven surface of an adherend and has a high anti-slip effect. The anti-slip tape of the present invention can therefore be advantageously used, for example, on strip steel plates that are stretched on floors such as factories and warehouses. The anti-slip tape of the present invention can be advantageously used, of course, in concourses such as stations and airports, in corridors in hospitals and public facilities, on stairs, and in steps for getting on and off vehicles such as trains and buses.

[0002]

2. Description of the Related Art As is well known, various anti-slip tapes (also referred to as films and sheets) are used by being attached to floors of buildings, stairs, and the like. For example, JP-A-8
Japanese Unexamined Patent Publication No. 326254 discloses a non-slip sheet and a method of manufacturing the non-slip sheet for the purpose of performing a predetermined display together with a non-slip effect. This non-slip sheet
As shown in FIG. 1, a base sheet 10 made of a synthetic resin film, aluminum foil, or the like, a display layer 12 formed by applying paint on the upper surface side of the base sheet 10 to display predetermined contents, An upper surface layer 20 formed on the upper surface side of the sheet 10 and the display layer 12 and including a large number of non-slip particles (for example, particles of alumina, rubber, glass, or the like) 24. Base sheet 1
On the back surface of No. 0, an adhesive layer 30 and a release sheet 32 are laminated. The upper surface layer 20 allows the contents of the display layer 12 to be seen through, and preferably the first adhesive layer 2
2 can be formed by adhering non-slip particles 24 to the surface of the second adhesive layer 2, and further forming a second adhesive layer 26 thereon.

However, in this non-slip sheet, since the non-slip particles are directly adhered to the display layer using an adhesive, there is a problem that the display layer is restricted by the adhesive used. . Furthermore, this anti-slip sheet is too hard due to its complicated layer structure, and therefore has a drawback that it cannot exhibit sufficient unevenness followability when applied to uneven portions. Above all, this anti-slip sheet has an important drawback in that the layer structure is complicated, the production becomes complicated, and time and cost are required.

On the other hand, for example, on floors of factories and warehouses,
Particularly, for the purpose of preventing a worker from slipping, a non-slip sheet having a simplified configuration as shown in FIG. 2 is used. In this anti-slip sheet, a non-slip resin layer 45 having irregularities on its surface is formed on a base material 42 made of aluminum foil, and further on the anti-slip resin layer 45 to enhance the anti-slip effect. The non-slip particles 47 are distributed. Anti-slip particles 4
Reference numeral 7 denotes particles of alumina, rubber, glass, or the like. In such an anti-slip sheet, since the malleability of the aluminum foil used as the base material can be utilized, the floor surface to which the anti-slip sheet is to be attached has an uneven portion, for example, a floor made of strip steel plate. Even if it does, it can sufficiently follow the uneven portion. In fact, a non-slip sheet using an aluminum foil as a base material as shown in FIG. 2 has been sold for several decades.

[0005] The anti-slip sheet of FIG. 2 has excellent conformability to irregularities and does not use a display layer.
It is noteworthy that problems caused by a display layer such as an anti-slip sheet described in JP-A-8-326254 can be avoided. However, this non-slip sheet has a drawback in that the aluminum foil of the base material is easily wrinkled, broken or stretched, so that a problem occurs during the production of the non-slip sheet, and it must be re-produced from the beginning.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, is easy to manufacture, does not cause any trouble during manufacturing, and has excellent irregularity followability. An object of the present invention is to provide an anti-slip tape.

[0007]

According to the present invention, as a means for solving the above-mentioned problems, there is provided an anti-slip tape including a base film having a resin layer having an anti-slip function on its surface, An anti-slip tape is provided, wherein the base film is made of a composite material of a resin film and a metal foil.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The anti-slip tape of the present invention can have various preferred forms. Hereinafter, typical forms of the anti-slip tape of the present invention will be described with reference to the accompanying drawings. FIG. 3 shows one preferred embodiment of the anti-slip tape according to the present invention. The illustrated anti-slip tape is the base film 1
And a resin layer 5 having an anti-slip function (hereinafter, referred to as “anti-slip resin layer”) laminated on one side thereof. The base film 1 is made of a composite material of a resin film 4 and a metal foil 2. In the illustrated example, the resin film 4 and the metal foil 2 are integrated by bonding with an interlayer adhesive layer 3. An anti-slip tape is also provided on the opposite side of the base film 1, as is commonly done in the art.
It has a pressure-sensitive adhesive layer 6 for attaching an anti-slip tape to an adherend. Although not shown, a release sheet may be laminated on the pressure-sensitive adhesive layer 6 as is usually performed in this technical field.

The anti-slip tape according to the present invention includes a base film made of a composite material of a resin film and a metal foil. In this anti-slip tape, the positional relationship between the resin film and the metal foil in the base film is not particularly limited, but usually, as shown in the drawing, the layer structure is such that the metal foil comes to the adherend side. Is preferably performed. The resin film is not particularly limited as long as it has excellent compatibility with the metal foil and can easily produce a target composite material. Suitable resin films include various plastic films, for example, polyester films, nylon films, polyvinyl chloride films, ethylene-vinyl acetate copolymer films, polypropylene films, polyethylene films, and the like. This plastic film may be used as manufactured, otherwise, to improve the adhesion to the metal foil through the interlayer adhesive layer and the adhesion of the non-slip resin layer to the film, Corona discharge treatment,
It may be used after surface treatment such as primer treatment.

[0010] Further, the resin film may be colored in an appropriate color if the anti-slip resin layer is substantially transparent and the state of the resin film can be observed through the layer. By printing a slogan or pattern on the surface, the effect as a display layer can be simultaneously obtained in addition to the intended anti-slip effect.

The effect of the display layer described above will be further described. Although not shown, a display layer having a predetermined pattern or the like may be formed on the surface of the resin film (on the side of the non-slip resin layer). Here, the term "pattern or the like" is used in a broad sense, and refers to, for example, characters, symbols, slogans, designs, and the like often used as display patterns on anti-slip tapes, and combinations thereof. In addition, the size of such a pattern or the like is arbitrary, and includes small to large sizes. For example, in the case where characters are included in the display layer, if the size of the alphabet is 8 points or more, it will be sufficiently recognizable. Also, in consideration of actual use, it is desirable that the size of the alphabet is 20 points or more. Further, such a pattern or the like may be a single color or a multicolor. Specifically, examples of the pattern include a white line provided on a platform of a station, a yellow / black diagonal pattern provided on a sidewalk or the like to call attention, and a display of "slip attention" on a stair. be able to. Therefore, the display layer may be formed entirely on the surface of the resin film, otherwise,
It may be partially formed.

Such a pattern of the display layer and the like can be variously changed according to the type, the location of the anti-slip tape, the desired effect, and the like, and are formed by using various methods. You can also. The pattern and the like can be formed using a conventional printing technique such as gravure printing, letterpress printing, and screen printing. The printing ink is preferably an oil-based ink in terms of resistance and the like, but may be a water-based ink if necessary. When a special effect or the like is expected, the pattern of the display layer may be formed to have, for example, a fluorescent property, a light storing property, a retroreflective property, or the like. Further, the pattern and the like may be formed by a technique other than printing as needed. For example, a sheet cut or punched into a shape such as a pattern may be adhered to the surface of the resin film via an adhesive layer, otherwise, a transfer sheet already provided with a pattern or the like is used. A pattern or the like may be transferred to the surface of the resin film.

Various types of metal foils can be used to produce a base film by laminating with a resin film. Suitable metal foils are not limited to those listed below, but include, for example, those having excellent malleability such as aluminum foil and tin foil. Among such metal foils, considering the malleability, availability, price, etc. of the metal,
Aluminum foil can be used particularly advantageously.

A film-like composite material composed of a resin film and a metal foil such as an aluminum foil can be manufactured by laminating and integrating them according to a conventional lamination technique. Examples of the lamination technology include a dry lamination method and a resin lamination method. For example, when a dry lamination method is used, an interlayer adhesive used for joining the resin film and the metal foil is, for example, an acrylic resin-based, urethane resin-based, or epoxy resin-based adhesive. Generally, such an interlayer adhesive preferably exhibits an interlayer adhesive strength of at least 0.5 N / mm ² or more, and preferably 1.0 N / mm ² or more.
More preferably, it exhibits an interlayer adhesion strength of ² or more. When the resin lamination method is used, a polypropylene film, a polyethylene film, a polyvinyl acetate film and the like can be advantageously used.

The base film composed of the resin film and the metal foil can have various thicknesses according to the specifications and use of the anti-slip tape. Generally, the thickness of the base film is preferably in the range of about 20 to 200 μm, more preferably in the range of about 50 to 150 μm. If the thickness of the base film is less than 20 μm, it becomes too thin to function as a base film (retaining the resin layer) and the strength is reduced. There is also a risk of doing so. Conversely, if the thickness of the base film is 200
If it exceeds μm, the effect of using a malleable metal foil, which is important in the present invention, cannot be obtained. In addition, the end of the anti-slip tape protrudes from the flat floor,
There is a possibility that it may interfere with walking.

In such a base film, the ratio of the thickness of the resin film to the thickness of the metal foil can be widely changed according to the specification and use of the anti-slip tape, but usually about 1: 1 to 1: 1. It is preferably in the range of 1:20. If the thickness of the resin film in the base film is too large, the malleability of the metal foil cannot be used.If the thickness of the resin film is too small, the resin film is bonded to the metal foil. The obtained advantage, that is, the workability at the time of manufacturing, does not change as compared with the case where the metal foil is used alone. Therefore, for example, a metal foil such as an aluminum foil is usually about 10 to 10
It is preferably used at a thickness of 0 μm.

In the anti-slip tape of the present invention, the base film holds the resin layer having an anti-slip function. The non-slip resin layer can be usually formed by providing a concave-convex pattern on the surface of the resin layer when coating or laminating the resin layer on the base film. The type and size of the concave / convex pattern serving as the non-slip function are not particularly limited. For example, as shown in FIG. 3, a mountain-shaped projection may be continuously formed. It may be an embossed pattern or a cut pattern like the surface of a striped steel plate. It is necessary that the anti-slip resin layer is firmly bonded to the base film to such an extent that it cannot be easily peeled off during use of the anti-slip tape.

The non-slip resin layer may be transparent, translucent or opaque. However, when the above-described display layer is provided on the surface of the base film as the base, the transparent resin layer is transparent. It is preferred that Suitable materials for forming the non-slip resin layer include, for example, urethane resin, epoxy resin, acrylic resin, polyolefin resin such as polyethylene and polypropylene, polyvinyl chloride resin, polyvinyl acetate resin, polystyrene resin, polycarbonate resin, polyamide resin And the like. Further, when such resins are classified in terms of their types, organic resin type, water solvent type, ultraviolet (UV) curable type, electron beam (EB) curable type, thermoplastic type and the like can be mentioned.

Such a resin layer may contain various additives in order to improve the properties of the anti-slip tape, for example, durability and weather resistance. Suitable additives include, for example, glass fibers, anhydrous silica, titanium oxide, ultraviolet absorbers, plasticizers, and the like. Also,
In addition to such additives, a coloring agent may be contained for coloring the resin layer.

Although the anti-slip resin layer can be formed arbitrarily according to a conventional film forming method, usually,
It is advantageous that the resin film is coated on the base film to a predetermined thickness by a coating method such as a spin coating method or a printing method such as a gravure printing method, and further dried. The resin layer can be usually formed by one film forming operation, but may be formed by two or more film forming operations as necessary. In order to obtain an anti-slip function, an irregular pattern is provided on the surface of the resin layer during such a manufacturing process.

Further, instead of the above-described film forming method,
A resin layer can also be formed by attaching a resin film on a base film. In such a case, a concavo-convex pattern for obtaining a non-slip function may be formed in advance on the surface of the resin film, or the concavo-convex pattern is applied to the surface of the resin film after the film is pasted. May be.

The thickness of the non-slip resin layer can be varied in a wide range depending on the use of the anti-slip tape and whether or not the resin layer has anti-slip particles. It is preferable to design the base film so as to be thinner than the metal foil so that the advantage of the malleable metal foil constituting the base film can be utilized even when the base film is formed. The thickness of the non-slip resin layer is usually in the range of 5 to 300 μm, and preferably in the range of 10 to 100 μm.

The anti-slip tape of the present invention preferably further has a pressure-sensitive adhesive layer on the adherend side of the base film. This pressure-sensitive adhesive layer can be formed from a pressure-sensitive adhesive commonly used in the field of anti-slip tape. For example, apply a solvent-based adhesive to the base film and dry to form an adhesive layer, or paste a transfer tape or double-sided tape on the base film to form an adhesive layer, or prevent slipping. When a tape is applied to an adherend, an adhesive layer can be formed by applying an adhesive, a pressure-sensitive adhesive, a transfer tape, a double-sided tape or the like between the two. Such an anti-slip tape with an adhesive layer is particularly useful from the viewpoints of workability and stability of fixing the tape.

The anti-slip tape of the present invention may further have any release means, for example, a release sheet or a release liner, for protecting the above-mentioned pressure-sensitive adhesive layer. Such a releasing means may be any one which is generally used for the purpose of protecting the adhesive, and may be made of not only paper but also a plastic film.

In the anti-slip tape of the present invention, the anti-slip resin layer preferably further contains anti-slip particles. By uniformly distributing the non-slip particles on the surface of the non-slip resin layer or in the vicinity thereof, the anti-slip function can be further enhanced as compared with the case where the non-slip resin layer is used alone. The anti-slip particles can be included in the anti-slip resin layer in various forms as shown in an example in FIGS. 4 and 5. FIG. 4 shows an example in which the anti-slip particles 7 are held exclusively on the surface of the anti-slip resin layer 5, and FIG. 5 shows an example in which the anti-slip particles 7 are exclusively embedded in the anti-slip resin layer 5. Of course, an example in which the non-slip particles 7 are included on the surface and inside of the non-slip resin layer 5 is also possible.

In the case of the anti-slip tape of the present invention, the anti-slip particles are not only fixed as in the conventional case, but also applied or held in a resin layer. Examples of the non-slip particles include, but are not limited to, those listed below, various inorganic materials, such as aluminum oxide (alumina), silicon carbide, glass, or organic materials, such as rubber, nylon, polyester, and the like. Can be used. Also, such non-slip particles can be used in various shapes and sizes. For example, the shape of the particles may be a sphere, a plate, or the like, in addition to a small sphere that is easily commercially available. These particles preferably have a particle size in the range of # 12 to # 120 when expressed according to JIS standards. If the particle size of the anti-slip particles is smaller than # 120, it is difficult to obtain the anti-slip effect.
If it is larger, the particles are less likely to stick. The preferred distribution density of such anti-slip particles is usually 0.0
The range is from 0.05 to 0.05 g / cm ² . If the distribution density of the anti-slip particles is less than 0.005 g / cm ² , the anti-slip effect will be difficult to obtain, and the durability will also decrease. Conversely,
If the distribution density of the non-slip particles exceeds 0.05 g / cm ² , for example, when the display layer is on the base film, the identification of the display layer may be difficult due to the presence of the particles. is there.

When the anti-slip particles are contained in the anti-slip resin layer, the anti-slip particles can be dispersed in various forms depending on the desired effect. For example, the anti-slip particles may be embedded in the resin layer and a part thereof may be exposed from the surface of the resin layer. Otherwise, the anti-slip particles may be completely embedded in the resin layer. As buried,
That is, the anti-slip particles may be completely covered with the resin. Note that such different dispersion forms of the anti-slip particles can be achieved by controlling conditions such as a method of forming the resin layer.

The application of the anti-slip particles can be performed according to various techniques. As a suitable technique, for example,
An electrostatic coating method (powder coating method) performed before forming the resin layer, simultaneously with forming the resin layer, or after forming the resin layer,
A gravity coating method, a spraying method, and the like can be given. In particular, the electrostatic coating method is useful because the non-slip particles can be deposited while standing.

[0029]

Next, the present invention will be described with reference to examples. Example 1 Production of Base Film A thin film of a 12 μm-thick polyester film (20 cm wide × 20 cm long) was thinly coated with an organic solvent-based rubber-based adhesive and dried. Next, a polyester film was stuck on an aluminum foil (width 20 cm × length 30 cm) having a thickness of 50 μm which had been spread out on a flat surface in advance via an adhesive layer. At this time, care was taken to prevent air from entering between the aluminum foil and the polyester film. When the obtained laminate was placed in an oven at 50 ° C. and left for 24 hours, a base film composed of a composite material of an aluminum foil and a polyester film was obtained. Fabrication of anti-slip tape A thermosetting urethane resin (Sumitomo Bayer Urethane Co., Ltd., trade name "Sumijur L" and trade name "Desmophen 1") is placed on a base film polyester film.
100 "was mixed at a ratio of 2: 1) to a thickness of 100 µm, and before drying, alumina particles were uniformly dispersed on the surface of the urethane resin film. The average particle size of the alumina particles was about 200 μm, and the distribution density was about 0.03 g / cm ² . The obtained laminate was placed in an oven at 50 ° C. to completely dry the urethane resin film. An anti-slip tape provided with a non-slip resin layer on the surface was obtained.

An adhesive layer (thickness: 50 μm) was formed on the back surface of the obtained anti-slip tape by using an adhesive transfer tape, and this adhesive layer was further released to a release sheet (thickness: 0.1 mm).
Protected. Performance Test of Anti-Slip Tape The performance of the anti-slip tape produced as described above was measured with respect to each of the interlayer adhesion strength and wrinkle resistance of the base film, and the irregularity followability of the anti-slip tape.
The measurement conditions are described below. (1) Interlaminar bond strength of base film Base film tensile tester (manufactured by Elkometer Co., Ltd.
Product name "ADHESION TESTER")
The polyester film was peeled off from the aluminum foil under predetermined measurement conditions, and the interlayer adhesive strength of the rubber adhesive bonding the two was measured. As shown in Table 1 below, the interlayer adhesion strength of the base film used in this example was 1.
It was 0 N / mm ² . (2) Wrinkle resistance of base film Forced wrinkling was attempted by sandwiching both ends of the base film by hand and repeatedly rocking back and forth for one minute. 5 wrinkles on the base film surface
Observation was made visually by the point method.

5: No wrinkles at all 4: Slight wrinkles 3 ... Some wrinkles 2 ... Overall wrinkles 1 ... Innumerable wrinkles The wrinkle resistance of the base film used in this example is as follows. As shown in Table 1, it was confirmed that the score was 4.0. (3) Unevenness-following property of anti-slip tape The anti-slip tape was attached to a strip steel plate via an adhesive applied to the back surface, and left in an oven at 50 ° C for one month. The striped steel sheet was taken out of the oven, and the state of the anti-slip tape on the surface thereof was visually observed. As a result, it was confirmed that the striped steel sheet had excellent irregularity followability. Example 2 The method described in Example 1 was repeated.
The thickness ratio of the aluminum foil of the base film to the polyester film was changed as shown in Table 1 below.
The measurement results as shown in Table 1 below were obtained. The irregularity followability was also good. Reference Examples 1 and 2 A base film was prepared according to the method described in Example 1 above. The conditions for producing the base film are as shown in Table 1 below. When the interlayer adhesion strength and wrinkle resistance of the obtained base film were measured as described in Example 1, the measurement results as shown in Table 1 below were obtained. Comparative Example 1 The method described in Example 1 was repeated.
For comparison, an aluminum foil (thickness: 75 μm) was used alone as a base material to prepare an anti-slip tape having a layer configuration similar to that of a commercially available product. The measurement results as shown in Table 1 below were obtained. Comparative Example 2 The method described in Comparative Example 1 was repeated.
The dispersion of the aluminum particles was omitted. The measurement results as shown in Table 1 below were obtained.

[0032]

[Table 1] As can be understood from the measurement results shown in Table 1 above, when aluminum foil is used alone as the base material, only insufficient wrinkle resistance can be obtained. When a composite material composed of a film is used, excellent wrinkle resistance can be obtained.

[0033]

As described above, according to the present invention, a composite material of a resin film and a metal foil is used as the base material of the anti-slip resin layer instead of the aluminum foil alone. And the characteristics of a metal foil excellent in malleability, such as Further, the anti-slip tape can be easily manufactured, and can exhibit high conformability to irregularities and anti-slip effect without causing any trouble such as breakage of the base material during the manufacturing. Since the anti-slip tape of the present invention is excellent in conformity to irregularities, for example, platforms of stations, concourses, stairs, etc., floors of vehicles such as buses, trains, steps, etc., slippery floors such as large stores, slopes, etc. In particular, it can be advantageously used for floors using strip steel, for example, floors of factories and warehouses.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of a conventional anti-slip sheet.

FIG. 2 is a cross-sectional view showing another example of a conventional anti-slip sheet.

FIG. 3 is a cross-sectional view showing one preferred embodiment of the anti-slip tape according to the present invention.

FIG. 4 is a sectional view showing another preferred embodiment of the anti-slip tape according to the present invention.

FIG. 5 is a sectional view showing still another preferred embodiment of the anti-slip tape according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base film 2 ... Metal foil 3 ... Interlayer adhesive layer 4 ... Resin film 5 ... Non-slip resin layer 6 ... Adhesive layer 7 ... Non-slip particles

Claims (7)

[Claims] 1. An anti-slip tape including a base film having a resin layer having an anti-slip function on a surface thereof, wherein the base film is made of a composite material of a resin film and a metal foil. tape. 2. The anti-slip tape according to claim 1, wherein the base film is made of a composite material obtained by bonding a resin film and a metal foil with an interlayer adhesive to integrate the resin film and the metal foil. 3. The anti-slip tape according to claim 1, wherein the metal foil is an aluminum foil. 4. The thickness of the base film is 20 to 2
The anti-slip tape according to any one of claims 1 to 3, wherein the thickness is in a range of 00 µm. 5. In the base film, the ratio of the thickness of the resin film to the thickness of the metal foil is from 1: 1 to 1:20.
The anti-slip tape according to any one of claims 1 to 4, wherein 6. The anti-slip tape according to claim 1, wherein the anti-slip resin layer has anti-slip particles. 7. An adhesive layer is further provided on the base film on the side of the adherend.
The anti-slip tape according to any one of the above items.