JP2001081716A - Line tape for artificial lawn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen elongation percentage dug to the moisture of an artificial lawn line tape and prevent lift due to water fall, water spraying or the like by erecting an engaging element comprising the mono-filament of a prescribed diameter on a foundation specifying the elongation percentage after water immersion in the form of a twill weave. SOLUTION: The engaging element 1 comprising the mono-filament of the diameter of 0.2-0.5 mm is erected on the foundation such as a polyester in the form of the twill weave. The engaging element 1 comprises a stem part 2 and a swelling head body shape 3, the stem part 2 receives repulsion action due to the bending elasticity of the shaft stem by the linearity, can pass through the gap of a loop pile or a cut pile, and the swelling head body shape 3 is firmly engaged with the pile. In addition, the engaging element 1 can be firmly erected by making it in the form of the twill weave, stress can be dispersed because the erection position of the engaging element 1 can be slipped, the engaging element 1 can be closely erected, and the artificial lawn line tape having strong engaging force can be obtained. After the polyester is immersed, contraction is not performed after drying again by making the elongation percentage 0.5% or less.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a line tape for artificial turf. More particularly, the present invention relates to a line tape for artificial turf which is preferably used for artificial turf having a long foot, has a small elongation rate due to moisture, and is hardly lifted even by rainfall, water sprinkling or the like.

[0002]

2. Description of the Related Art In an artificial grass stadium or the like, a hook-and-loop fastener is used as a line tape. Synthetic polymer monofilaments are used as surface fasteners used in artificial turf (for example, Japanese Utility Model Publication No. 6-37713).
No.). This synthetic polymer monofilament is composed of polypropylene having a diameter of less than 0.3 mm and a height of less than 9 mm, and the standing density of the synthetic polymer monofilament of the hook-and-loop fastener is 200 to 400 filaments / sq.
64 lines / cm ² ). In addition, 63-5967
No. 7 has a diameter of 0.25 to 0.5 mm and a height of 4 mm.
There is described an artificial turf tape comprising engaging elements of 10 to 10 mm, and the number of engaging elements being 10 to 15 hook-and-loop fasteners per 1 cm ² . Such hook-and-loop fasteners are mainly used as line tape for artificial turf with short legs.

[0003] Artificial turf with short feet has a problem that the burden on the legs and hips is large, and studies have been conducted to lengthen the pile to improve the cushion of artificial turf, and so-called artificial turf with long feet has been developed. . In addition, the conventional loop pile has a problem that spikes and the like are easily entangled.
Artificial turf is also moving from a loop pile to a cut pile, or a mixed type of a loop pile and a cut pile.

In such a situation, for example, Japanese Utility Model 6-3
No. 7713 discloses a line tape for artificial turf using a hook-and-loop fastener, although the standing density of the synthetic polymer monofilament is high, but the diameter is small and thin, so that the locking portion of the filament does not reach the depth of the artificial turf. As a result, there is a problem that the bonding force between the artificial turf line tape and the artificial turf is not sufficient, and the line tape is easily peeled. Further, the tape for artificial turf described in Japanese Utility Model Laid-Open No. 63-59677 has a low standing density and has a problem in engagement force.

In order to solve such a problem, it is conceivable to increase the diameter of the filament so that the filament reaches the depth of the artificial turf and to increase the filament density. There are problems that the size must be reduced to some extent, and problems such as the overlapping of the standing positions of the filaments and the occurrence of cracks, which results in a poor appearance and a reduction in bonding force. Furthermore, flexibility is required in consideration of storage.

[0006] On the other hand, in the artificial turf ball field or athletic field, sports and ball games such as baseball, American football, futsal, tennis, and grand hockey are performed using line tape for artificial turf. Such competitions or ball games may continue even in rain. In particular, in the case of a grand hockey or the like, water may be sprinkled to prevent burns due to frictional heat when a competitor slides.

However, the conventional line tape absorbs moisture due to rainfall or water sprinkling, so that the line tape expands and expands and rises from the artificial turf, so that the line tape comes off due to the impact during sports. There is a problem that the player may be injured and the player may be injured.

[0008] Thus, there is a need for a line tape for an artificial turf suitable for long-legged artificial turf, which has an excellent engaging force, a line tape which has a low elongation due to moisture, and a line tape for an artificial turf which has both of them.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a line tape for artificial turf having a large filament diameter and comprising a surface fastener having densely erected filaments. The artificial turf line tape of the present invention provides an artificial turf excellent in engagement force, which is particularly suitable for artificial turf with a long foot, furthermore, has a low elongation rate due to moisture, is less likely to rise from the artificial turf, and is safe. An artificial turf line tape capable of competition is provided.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a male fastener made of a cloth having an engaging element made of a monofilament having a diameter of 0.2 to 0.5 mm erected in a twill pattern on a base cloth.

The present invention also provides a base fabric having a diameter of 0.2 to 0.2 mm.
The present invention relates to a line tape for artificial turf in which engagement elements made of a monofilament of 0.5 mm are erected in a twill pattern.

In a preferred embodiment, the monofilament is made of polypropylene mixed with carbon black.

[0013] In a preferred embodiment, the monofilament is made of polypropylene containing an ultraviolet absorbent.

In a further preferred embodiment, the base fabric is made of polyester and has an elongation after immersion in water of 0.5.
% Or less. Here, the elongation percentage is a value obtained by immersing a line tape having a width of 50 mm and a length of 1,000 mm in water for 1 hour, taking out the line tape, measuring the length after immersion, and calculating the length by the following equation. Say. Elongation (%) = {(length after immersion−length before immersion)} / length before immersion × 100

[0015] In a preferred embodiment, the tape surface of the artificial turf line tape is a fluorescent screen.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION
An engagement element made of a monofilament having a diameter of 0.2 to 0.5 mm is erected in a twill pattern on a base cloth. Such a male fastener made of cloth can be used for artificial turf line tape, bonding of a synthetic filament with a bulky nonwoven fabric made of a random web, joining means (joint) of industrial or construction nonwoven fabric, and a rotating part of a polishing buff. It is used for applications such as mounting or fixing sporting aids on artificial turf.

Hereinafter, a line tape for artificial turf, which is one use of the male surface of the fabric fastener, will be described. In the line tape for artificial turf of the present invention, an engaging element made of a monofilament having a diameter of 0.2 to 0.5 mm is erected on a base cloth in a twill pattern. The base fabric is not particularly limited as long as it is a woven fabric. By using a woven fabric as the base fabric, flexibility is given to the base fabric itself, and adhesion to an object is provided. The thickness of the base fabric is preferably about 0.3 to 3 mm, and
More preferably about 0.4 to 0.6 mm.
mm is more preferable.

As the base fabric, nylon, polyester,
Acrylonitrile, polypropylene, polyethylene and the like are used, among which nylon and polyester are
It is preferable because it is excellent in flexibility, excellent in dyeability and workability.
In addition, since the elongation of polyester is small due to moisture,
It is particularly preferably used in consideration of rainy weather and water sprinkling.
As the nylon base fabric and the polyester base fabric, both ordinary yarn and strong yarn are used, but in view of the strength of the obtained base fabric, strong yarn is preferable. Further, the size of the thread is not limited, but may be determined in consideration of durability in engagement with and detachment from the artificial turf.

The engaging element used for the male surface of the fabric fastener and the line tape for artificial turf of the present invention is made of a monofilament and has a mushroom-like structure illustrated in FIG. 1A. As shown in FIG. 1 a, the engaging element 1 is composed of a stem portion 2 made of a monofilament and a bulging body shape 3. The diameter of the stem 2 of the engagement element 1 of FIG. 1a is about 0.2-0.5 mm, preferably about 0.3
~ 0.5mm, more preferably 0.3 ~ 0.46mm
It is. If it is less than 0.2 mm, it is too thin and lacks bending elasticity,
Since it cannot penetrate deep into the artificial turf, the engaging force is weak, and particularly the tensile shearing force is small. If it exceeds 0.5 mm,
Weaving becomes difficult, and it may not be possible to stand up to a predetermined density.

The height L of the engaging element 1 is not particularly limited, and may be determined in consideration of the stem 2 of the engaging element 1. However, if it is too long, the bending elasticity becomes weak. In consideration of this point, about 2 to 10 mm is preferable, and about 3 to 8 mm
Is more preferable, and about 4 to 7 mm is even more preferable.

[0021] In addition, the bulge _{D M} of膨頭Ko body shape 3,
It is preferably about 1.5 to 3 times the shaft diameter (D). If it is less than about 1.5 times, it is easy to pierce but it is easy to come off. If it exceeds about 3 times, it is difficult to penetrate the pile of artificial turf, and the tape tends to rise.

Further, the monofilament used in the present invention is erected in a twill weave shape, and FIG. 1b shows the weaving style. Since the engaging element 1 has the above-described structure, the stem 2 of the engaging element 1 receives a repulsive action due to the bending elasticity of the shaft stem due to its linearity, and can penetrate through the gap of the loop pile or the cut pile. The head 3 is securely engaged with the loop pile or cut pile. The bevel body shape 3 of the engagement element 1 is easily engaged with either a loop pile or a cut pile of artificial turf.

The material of the monofilament forming the engaging element is not particularly limited as long as it has a proper elasticity. From the viewpoint of production, a thermoplastic resin that can be melt-spun is preferable, and examples thereof include a polyolefin resin, a polyamide resin, and a polyester resin. Polyolefin fibers, particularly polypropylene, are preferred from the viewpoint of the formation of the bile body shape.

The cross-sectional shape of the engagement element is not particularly limited. A substantially circular shape is preferable for manufacturing.

The standing density of the engaging element is 1 cm ²
Preferably, the number is 16 to 42,
, 17-38, 18-38, and 1
The standing density may be 9 to 40, 20 to 38, or 16 to 30. The required engagement force can be obtained by standing up to the density in such a range.

Furthermore, one of the features of the present invention is that the engaging element made of a monofilament is erected on the surface in a twill pattern. The twill weave of the present invention (FIG. 3) and the conventional warp pile weave (FIG. 2) will be described in comparison.

FIG. 2 shows a conventional warp pile weave (12 knit structure).
It is a schematic diagram which shows the style of. As can be seen from FIG. 2a,
In the conventional warp pile weave, the engaging elements 1 represented by dots are arranged in parallel. Such a conventional warp pile weave (1
2 over tissue), as the stem diameter of the engagement element 1 increases,
The standing positions of the engaging elements 1 are overlapped, and stress is concentrated, so that the weaving occurs.

On the other hand, the above-mentioned drawbacks can be solved by the male surface of the fabric fastener or the line tape for artificial turf of the present invention. FIGS. 1b and 3a and 3b show a mode of a transpile weaving (100% tissue) of a male fastener made of cloth (line tape for artificial turf) in which the engaging elements are erected in a twill pattern according to the present invention. It is a schematic diagram. As can be seen from FIG. 3a, the engagement elements 1 represented by dots are arranged alternately and are erected as shown in FIG. 3b. Therefore, the engagement element 1 can be firmly erected and the erected position of the engagement element 1 can be shifted by forming the twill weave. As a result, the stress is dispersed, and the engagement elements 1 are erected without tightness and densely.

Since the stem of the engaging element (thickness of the monofilament) and the twill weave are formed, the density of the engaging element can be increased to be high. The monofilament can penetrate up to. Especially in the case of line tape for artificial turf, artificial turf with long legs (cut pile,
Since the monofilament can penetrate deep into the loop pile or the mixed turf, a line tape for artificial turf having a strong engaging force can be obtained.

The monofilament used for the male surface of the fabric fastener and the line tape for artificial turf of the present invention preferably has weather resistance. Among the weather resistances, particularly when used outdoors, it is preferable to have resistance to ultraviolet rays. Therefore, it may contain an ultraviolet absorber or may be blended with carbon black. In particular, polypropylene blended with carbon black is preferable because it can be easily formed into a blob shape and has excellent weather resistance. The amount of carbon black added is not particularly limited, but is about 0.1% based on the resin.
５5% by weight, preferably about 1%. Further, the particle size of the carbon black is preferably small, and is preferably about 30 μm or less. When an ultraviolet absorber is added as a stabilizer at about 1/10 the amount of carbon black, weather resistance is further enhanced.

The production of the male surface of the fastener and the line tape for artificial turf of the present invention is carried out, for example, by the following method. First, the monofilament yarn is twill-woven as a pile and woven by a double pile loom (a loom that makes a pile with warp using a double weft structure). After weaving, if necessary, perform sufficient heat setting. This heat setting is preferably performed, since it is possible to prevent pile collapse in a later step. Thereafter, the surface is divided at the center of the pile to obtain a surface fastener having a monofilament standing upright. After coloring, if necessary, the tip of the monofilament is melted and heated to form a bulging body shape.
Thereafter, it may be cut to the required width. When a surface having a specific width is used in advance, there is no need to cut.

A preferred use of the obtained male surface of the fabric fastener is as a line tape for artificial turf. Hereinafter, the artificial turf line tape will be described.

It is preferable that the surface of the line tape for artificial turf of the present invention is colored. The term "colored" means that when the base fabric is a colored fabric that has been color-processed at the stage of fabric, or when the fabric is a fabric woven with yarn that has been dyed, the tape surface is colored. In the case of applying colored fabric, film, etc. to the tape surface,
This includes the case where the film is colored after being attached. For the coloring process, a method that a person skilled in the art considers appropriate according to the material may be applied. Examples of the dyeing method include win dyeing, zicker dyeing, and beam dyeing. Coloring includes coatings such as fluorescent paints, phosphorescent paints, and pigments, including white. When the tape surface is a fluorescent surface, the line becomes clear in a night game, which is preferable.

Further, the tape surface of the artificial turf line tape of the present invention is preferably coated (resin-treated) with a solvent-based urethane resin. By coating, the engaging element is fixed to the base cloth, and the base cloth itself can be made strong while having flexibility. The coating agent can be colored by using a pigment, a fluorescent paint or the like.

The elongation percentage of the thus obtained artificial turf line tape after immersion in water is 0.5% or less when the polyester base cloth is used. Preferably, it is 0.2% or less. Most preferably, the elongation is zero and does not shrink after drying again.

FIG. 4 shows the line tape for artificial turf thus obtained. Line Tape for Artificial Grass 5 of the Present Invention
Has an engaging element 1 erected in a twill pattern on a base cloth 6, and has a back coat 7 on the tape surface side. Engagement element 1
Has the above structure and is made of a monofilament,
The stem portion 2 of the engaging element 1 is repelled by the bending elasticity of the shaft stem due to its linearity, and can penetrate through the gap of the artificial turf 4, so that the bulging body shape 3 is securely engaged with the artificial turf 4. You.

[0037]

EXAMPLES Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited to these examples.

(Examples 1 to 4) Nylon 6 (Examples 1 to 4)
3) and polyester (Example 4) were used as a base fabric, and twill weaving was performed by a double pile loom using a polypropylene containing 1% of carbon black as a standing monofilament, and then opened into two sheets. After applying a back coating mainly composed of a solvent-based urethane resin to each of the cloths having different lengths and thicknesses of the monofilament, the tip portion of the monofilament is melted to form an engagement element having a bulge shape. Thus, a line tape for artificial turf (Examples 1 to 4) was obtained. In addition, the D
_M / D was 2.5. Table 1 shows the shapes of the artificial turf line tapes in Examples 1 to 4 and Comparative Example 1.

[0039]

[Table 1]

The engaging forces of the obtained line tapes of Examples 1 to 4 and Comparative Example 1 were measured for a commercially available foot-length type artificial turf. The engagement force is, as shown in FIG.
(1) 90 ° peel strength, (2) 180 ° peel strength, and (3) tensile shear strength. In addition, the tensile shear strength of (3) was measured using what overlap | superposed 50 mm. Table 2 shows the results.

[0041]

[Table 2]

The results shown in Table 2 show that the line tape for artificial turf of the present invention was compared with the line tape of Comparative Example 1 both in the case of using nylon 6 as a base cloth and in the case of using polyester as a base cloth. This indicates that the engaging force is excellent. The tape having a diameter of 0.31 mm in Example 2 was
Although the 180 ° peeling force is small, the 90 ° peeling force is large and the tensile shearing force is large, so there is no particular problem in use,
On the contrary, it is convenient because less force is required for winding.

Example 5 Example 3 (base fabric: nylon)
And the line tape for artificial turf obtained in Example 4 (base fabric: polyester) were respectively 50 mm in width and 1.00 in length.
It was cut out to a size of 0 mm, immersed in water for 1 hour, taken out, and the length after immersion was measured to determine the elongation. The length after re-drying was also determined. Table 3 shows the results.

[0044]

[Table 3]

As a result, it was shown that the line tape for artificial turf made of polyester yarn did not stretch even in the presence of moisture and did not shrink even after re-drying.

[0046]

According to the present invention, since the engaging elements made of monofilaments are densely erected in a twill weave, the engaging surface of the male fastener is increased. In particular, when used as an artificial turf line tape, in addition to the increase in the engaging force, the engaging elements made of a monofilament having a large diameter are densely erected, and the length of the engaging elements can be further increased. It is particularly useful for artificial turf with long legs, since the engaging element can penetrate deep into the artificial turf.

[Brief description of the drawings]

FIG. 1 is a schematic view of an engaging element of a line tape for artificial turf of the present invention.

FIG. 2 is a schematic view of a conventional warp pile weave (12 knit structure).

FIG. 3 is a schematic view of the warp pile weave (100% texture) of the present invention.

FIG. 4 is a view showing a line tape for artificial turf of the present invention.

FIG. 5 is a diagram showing a method for evaluating the line tape for artificial turf of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Engaging element 2 Stem part of engaging element 3 Bulb shape 4 Artificial turf 5 Line tape for artificial turf 6 Base cloth 7 Back coat D _M Bulb shape bulge D Shaft diameter L Height of engaging element

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Susumu Yamamoto 1-4-1-19 Minamimorimachi, Kita-ku, Osaka-shi, Osaka Prefecture Inside Kanebo Bell Touch Co., Ltd. (72) Seiji Matsumoto 1 Minamimoricho, Kita-ku, Osaka-shi, Osaka 4-19 Kanebo Bell Touch Co., Ltd. (72) Inventor Masato Kondo 1-4-19 Minamimoricho, Kita-ku, Osaka-shi, Osaka F-term in Kanebo Bell Touch Co., Ltd. 2D053 AA29 AD03 EA25

Claims (6)

[Claims] 1. A cloth fastener male surface in which an engaging element formed of a monofilament having a diameter of 0.2 to 0.5 mm is erected in a twill pattern on a base cloth. 2. An artificial turf line tape in which engaging elements made of a monofilament having a diameter of 0.2 to 0.5 mm are erected in a twill pattern on a base cloth. 3. The artificial turf line tape according to claim 2, wherein the monofilament is made of polypropylene mixed with carbon black. 4. The line tape for artificial turf according to claim 2, wherein the monofilament is made of polypropylene blended with an ultraviolet absorbent. 5. The artificial turf line tape according to claim 2, wherein the base fabric is polyester, and the elongation after immersion in water is 0.5% or less. 6. The artificial turf line tape according to claim 2, wherein a tape surface of the artificial turf line tape is a fluorescent screen.