JPH0468101A - Loop pile artificial turf for ball collection - Google Patents

Abstract

PURPOSE:To improve durability by a method wherein a web layer is superimposed on one side of a cloth, the cloth and the web layer are intertwined by needle punching method, and loop piles are formed over the surface of the cloth with the pile threads planted on the opposite surface of the cloth. CONSTITUTION:A web layer 3 is superimposed on one side of a cloth of woven stuff made of polyolefine flat yarns that are used as the warps 1 and the woofs 2, and the cloth and the web layer 3 are intertwined by needle punching method. Then loop piles 4 are formed over the surface on which the web layer 3 is superimposed, and pile threads are planted so that back stitches 4' are formed on the opposite surface of the cloth. Single yarns in 6-20d are used for the web layer 3, and the weight in 50-200 g/m<2>, approximately, is set at the part on one side of the cloth so that permanent set in fatigue of the pile threads and deterioration of the cloth by exposure to the ultraviolet rays can be prevented. Backing is made, using latex, to the reverse side of the pile fabric.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an artificial turf for collecting balls, which is mainly used as a substitute for natural turf at golf driving ranges and the like.

[Problems to be solved by conventional techniques and inventions] Conventionally,
At golf driving ranges, natural grass was planted to create the atmosphere of a golf course, but this required labor and labor costs. Due to labor shortages and rising labor costs, automatic ball collecting devices and artificial turf are being introduced year by year.

However, the conventional artificial turf used at golf driving ranges has the following drawbacks.

(1) The pile yarn has light resistance, but since the base fabric is made of polyolefin flat yarn fabric, ultraviolet rays can pass through the base fabric and not from the surface (pile yarn). It begins to deteriorate and its durability deteriorates.

(2) There is no cushioning material between the pile yarn and the base fabric, and the valve yarn wears out quickly due to the impact of being hit by a golf ball, so it does not last long.

The object of the present invention is to improve these drawbacks and provide an artificial lawn that has good durability and is resistant to the pile threads becoming flattened.

(Means for Solving All the Problems) The present invention provides the following features: (a) a web layer is superimposed on one side of a fabric made of a woven fabric containing flat yarns of polyolefin, and (b) these fabrics and the web layer are formed by needle punching. (c) A loop pile is formed on the side of the cloth surface where the web layers overlap, and the opposite surface has a fabric weight of 50 to 200 f on one side of the Paxten cloth. (e) A loop pile artificial lawn for collecting balls, in which the back side (the above-mentioned pile yarn) <the side with the tsuku stitches> of such a pile fabric is lined.

As the cloth, it is preferable to use a fabric using oriented flat yarns of polypropylene or high-density polyethylene for the warp and weft, or a fabric using such flat yarns and monofilament or fibril yarns of polypropylene or high-density polyethylene. I can do it. A woven fabric using the former flat yarn for the warp and weft is particularly preferred.

Fabrics containing flat yarns of such polyolefins are susceptible to deterioration by ultraviolet rays when exposed to sunlight.

The fabric and web layers are intertwined by needle punching. The degree of needle punching is such that the fabric and the web layer do not shift during subsequent planting of knotted yarn (usually by titling), while the fabric is maintained even after planting of pile yarn in a later process. The tensile strength of the artificial lawn can be changed arbitrarily within a range that is sufficiently durable for practical use.

The overlapping side of the web layer is called the cloth side, and the opposite side is called the back side, and the pile thread is planted so that the back stitch is on the side where the pile is present. The surface is covered with a web layer to prevent direct UV rays from hitting the fabric, and to act as a cushioning material even if a golf ball hits the pile, preventing the pile from buckling.

The single yarn of the web layer preferably has a thickness of about 6 to 20 d. about 6
If it is smaller than d, the bulkiness will be low, and a large amount of web will be required in order to have a sufficient effect of preventing the pile yarn from becoming flattened by the impact when a golf ball lands on the artificial lawn, which will be uneconomical. On the other hand, if it exceeds 20 d' (i), it becomes too bulky and the thickness of the web layer required to prevent the ultraviolet rays from hitting the cloth becomes too thick. On the other hand, the jamming effect becomes smaller and a larger amount of web is required, which becomes uneconomical.

The fibers of the web layer have the effect of preventing ultraviolet rays contained in sunlight from reaching the fabric. In order to enhance this effect, the fibers of the web layer preferably contain dyes or pigments. Its content is usually about 0.2 to about 3x%.

The dyes include Chrysophenine G (Direct Yellow 12), Sirius Subra Blue G (Direct Blue 8), Benzofast Black G (Direct Black 19), Sumilite Supra Yellow BCcone.
, (Direct Yellow 28), Florazol Rose B (
Direct dyes such as Direct Ray 6) 31); Orange 11 (Acid Orange 7), Sulfocyanine 5R (Acid Blue 1);
20), Alizarin Yellowol B (Acid Flu 45)
), Acidic dyes such as Martius Yellow (Acid Yellow 24); Auramine O (Paisic Yellow 2), Malachite Green (Paisic Green 4), Rhodamine B (Paisic Violet 10), Methylene Blue (Paisic Blue 9), Alizarin yellow: 3
a cc, I, Paysic Yellow 11. ); acidic mordant dyes such as Alizarin Yellowle B (Acid Blue 45), Erioflore Blue Black B (Mordand Black 3), Alizarin Yellow 2G (Mordant Yellow 1); indigo (Bat Blue 1); , indanthrene red violet RH (bat violet 2), indanthrene blue RS (rose) blue 4), flavanthrone (bat yellow 1)
), Pyranthrone (Bat Orange 9), Caledone Yade Clean BN (Bat Green 1), Indanthrene Brown GR (Bat Brown 44), and other vat dyes; Sulfur Black T (C, L Sulfur Black], ), and other vat dyes; Dyes: Naphthol dyes such as Vacansein Red, Para Red, Naphthol As-G, Naphthol AS-GR; Oxidation dyes such as Aniline Black Disperse dyes such as Disperse Violet 1); Micasion Yellow (C.

1. Reactive dyes such as lJ Active Yellow 4); 4゜4
'-Diaminostilbene-2,27-disulfonate sodium, Ubitex ERN, Mikawhite ATN
, 7-dinitylamine-4-methylcoumarin, Thai 7 Bar WG, and other phosphorescent whitening dyes.

The pigment is Pigment Yellow 167 (hbl1
737), Pigment Yellow 17 (Arashi 21105),
Pigment orange! 3 (lVh2111.0), Pigment Orange 43 (Ken 71105), Pigment Red 57:1 (Nagi 15850: 1.), Pigment Red 122 (Dou 73915), Pigment Red 88
(73312), Pigment Violet 32 (Nc
Li2517), Pigment Violet 23()'h
51319), Pigment Blue 15 (Arashi 74160)
, Victory Blue 15:1 (NQ, 74160),
Pigment Green 7 (Nh 74260), Pigment Green 36 (Nh 74265), Pigment Brown 25 (No, 1251.0), zinc oxide, titanium oxide, Pigment Yellow 42 (Arashi 77492), Pigment Brown 24 (&, 77310) , Pigment Violet 15 (77007), Pigment Red 101 (77491), Pigment Blue 29 (
No. 77007), Pigment Blue 28 (Arashi 773)
46), Pigment Green 19 (77335)
, Pigment Green 50 (Nn77377), Pigment Yellow 119 (K77496), Pigment Brown 33 (Omi 77503), Pigment Black 11 (
77499), mica, carbon black, Bigbat Ye o-83 (Na21108), pigment yellow 81 (fiber 21127), pigment orange 43 (
ffi71105), Pigment Orange 36 (11
780), Pigment Red 5 (1'h124.90)
, Pigment Red 112 (Nul, 2370),
Pigment Violet 32 (Magnetic 12517), Pigment Yellow l-23 (Magnetic 51319), Pigment Blue 15:3 (74160), Pigment Blue 15
(74.250), Pigment Yellow 128, and Pigment Green 36 (N174265).

The fiber (rj) of the web layer preferably contains a light stabilizer itself.The content thereof is usually 01 to IM%.

Examples of such light stabilizers include benzophenone-based and benzotriazole-based ultraviolet absorbers, hindered amine-based light stabilizers, and the like. Among these, hindered amine compounds are preferred. Examples of hindered amine compounds include bis(2,2,6,6-tetramethyl-4-
piperidyl) sebacate, bis(], 2,2,6.6
-Peftamethyl-4-piperidyl) sebacate, succinic acid and N-(2-hydroxyethyl)-4-hydroxy-
2,2,6,6-titramethylbiperidine polycondensate,
Poly[(6-((1,1,3,3-tetramethylbutyl)-imino)-1,3,5-triazine-2,4-diyl)(2-(2,2゜6.6-titramethyl-・1-piperidyl)imino]-hexamethylene-(4-(2,2
,6,6-titramethyl-4-piperidyl)imino))
, 1-(2-(3-(3,5-di-t-butyl-4-hydroxyphenyl)glopionyloxy]ethyl]-4
-(3-(3-(3,5-di-t-butyl-4-hydroxyphenyl)globionyloxy)-2,2,6,6
-Titramethylpiveridine, Tetrakis (2,2,6,
6-tetramethyl-4-piperidyl)-1,2,3,4
~Butanetetracarboxylic acid ester, tetrakis (1,
2,2,6゜6-bentamethyl-4-piperidyl)
]-,2゜3.4-butanetetracarboxylic acid ester,
N.

Polycondensate of N'-bis(2,2,6,6-tetramethyl-4-piperidyl)heximethylenediamine and 1,2-dibromoethane, 1,6-bis(2゜2.6,6- Tetramethyl-4-piperidylamino)hexane and 2,4-
Examples include polycondensates of dihalo-6-morpholino 1.3.5-11 azine. Among these, the average molecule t1
500 or more is preferable, especially Bo IJ ((6-(
(1.

1.3.3-tetramethylbutyl)-imino]-1,3
,5-1-riazine-2,4-diyl](2-(2,2
,6,6-tetramethyl-4-piperidyl)imino]-
Hexametherene (4-(2゜2.6.6-tetramethyl-4-piperidyl)imino), N,N'-bis(2
, 2,6,6-tetramethyl-4-piperidyl)hexamethylenediamine and 1,2-dibromoethane, 1°6-bis(21216,6-tetramethyl-4
-piperidylamino)-\xane and 2,4-shiba0-6
Polycondensate metals with -morpholino-1,3,5-triazine are preferred.

The basis weight of the web layer on the surface of the cloth is about 50 to 200 f.
/go is preferably 70 to 130 f/go. If it is less than about 50 f/77 f', the proportion of ultraviolet rays hitting the fabric will be large, making it more likely to cause p-ultraviolet deterioration, and the pile yarn will become flattened (the yarn will lie flat) when a golf ball hits the artificial lawn. more likely to occur.

On the other hand, if it exceeds about 2009/if, a large amount of web layers will be required, which is uneconomical.

Materials for the web include rayon, nylon, polyester, polyvinyl chloride, acrylonitrile, cotton,
Polypropylene, high density polyethylene, etc. can be used without particular limitation.

This web is preferably colored in the same color as the pile yarn.

The pile yarn has a torque denier of about 400 to 5000.
d, preferably about 1000 to 3500 d.

More preferably, it is 1,500 to 3,300 d, and the single yarn has a diameter of about 100 to 1,000 d, preferably about 200 to 600 d.
It is better to be d. The pile yarn may be in the form of tape yarn, monofilament, or Japanese tin-lit yarn. In the case of tin-lit yarn, the thickness of the single yarn of the pile yarn refers to the thickness of the portion between adjacent cuts made in the yarn.

This pile yarn is preferably colored in a greenish color, but is not limited thereto. As this constituent material, nylon, polyester, polyvinyl chloride, polyvinylidene chloride, polypropylene, high density polyethylene, etc. can be used.

The pile is preferably a loop pile, which has high integrity and requires only a small amount of pile, and in order to improve the rolling of the golf ball, it is preferably a so-called level loop pile with a uniform height.

The backing may be a coating of adhesive such as latex or polyvinyl alcohol, or a coating or laminate of foam rubber such as SBR or NBR polyurethane.

The lining is preferably one that prevents moisture from permeating from the surface of the artificial lawn to the back side. This is because water permeation can cause erosion and runoff of the subsurface of the artificial lawn.

Latex can be suitably used as the lining. The latex with is SBR%NR.

The main components are a rubber component consisting of at least one type such as NBR, and an extender component consisting of at least 1's such as calcium carbonate and aluminum hydroxide, and in addition to these, a dispersion medium or solvent such as water is added. is the main component. The rubber component preferably accounts for 15% by weight or more based on the total amount of the rubber component and extender component. This is to improve the adhesion between the base fabric (a fabric made by intertwining webs by needle punching) and the backstitch of the pile yarn.

Also, the amount of latex applied is approximately 300 to 90% on a dry basis.
50 f/m is preferred. Below about 300 f/d, the adhesion between the base fabric and the backstitch of the pile yarn may deteriorate, and undesirable water permeation from the front to the back of the artificial lawn may occur; v? This is because it becomes uneconomical if it exceeds .

Furthermore, latexes using rubber components such as SBR or NR (natural rubber) prevent swelling due to water, improve water permeability, and reduce adhesion between the base fabric and the backstitch of pile yarn. In order to completely prevent this, it is preferable to add at least one of a water repellent and a crosslinking agent. Water repellents include wax-based water repellents and silicone-based water repellents. Incyanate is an example of a crosslinking agent. The total amount of these additions is usually about 1 to 10 parts per 100 M parts of the rubber component.
Parts by weight are preferred.

A vertical cross-sectional view of an example of the present invention is shown in FIG. In Figure 1, 1 and 2 are the warp and weft of the cloth, 3 is the web layer, 3' is the fiber protruding from the back side of the cloth by needle punching, 4 is the pile, 4' is the backstitch of the pile yarn, and 5 is the backstitch of the pile yarn.
is latex.

[Brief explanation of the drawing]

1 is a vertical view of an example of the artificial lawn of the present invention. Was. that's all

Claims (7)

[Claims] (1) (a) A web layer is overlaid on one side of a fabric made of a woven fabric containing flat yarns of polyolefin,
(b) These fabrics and the web layer are intertwined by needle punching, and (c) a loop pile is formed on the side of the fabric where the web layer overlaps, and a backstitch is formed on the opposite side. (d) The web layer has 6 to 6 single yarns.
20d, the basis weight of the part on one side of the cloth is 50~2
00g/m^2, and (e) the back side of the pile fabric composed of (a) to (d) above (the side with the backstitch of the pile yarn) is lined, for collecting balls. Loop pile artificial lawn. (2) The artificial lawn of claim (1), wherein the backing is latex. (3) The latex is dry base SBR, NBR
The artificial lawn according to claim 2, wherein the main components are a rubber component consisting of at least one of NR and NR, and an extender component consisting of at least one of calcium carbonate and aluminum hydroxide. (4) Claim (2) or (3) wherein the rubber component is 15% by weight or more based on the total amount of the rubber component and extender component.
) Artificial lawn. (5) The amount of latex applied is 300% on a dry basis.
Claim (2), (3) or (
4) Artificial lawn. (6) The artificial lawn according to any one of claims (1) to (5), wherein the fibers of the web layer contain a dye or a pigment. (7) The artificial lawn according to any one of claims (1) to (6), wherein the web contains a light-resistant agent.