JP3096927B2 - Artificial grass - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial lawn used for golf courses, poolsides, and the like.

[0002]

2. Description of the Related Art Artificial turf is made by applying a backing agent to the back surface of a pile fabric using flat plastic monofilament as a pile yarn and backing it.

[0003] Japanese Utility Model Publication No. 56-6468 (Japanese Utility Model Application Publication No. 47-38)
183) discloses an artificial turf in which a cut pile and a loop pile are mixed, but the pile of the artificial turf generally used is a cut pile.

The thickness (fineness) of a plastic monofilament conventionally used for piles of artificial grass is 300 to 10
00 denier, several of which are used for pile yarn.

[0005] Since the fineness of the fibers (multifilament, sliver) constituting the pile of the carpet usually used indoors is 10 denier or less and generally 1 to 5 denier, the plastic monolith constituting the pile of the artificial turf is in comparison. The fineness of the filament is remarkably large.

Accordingly, the pile of the artificial grass is extremely rigid, and has a resilience and a rough touch like a brush or a scallops.

[0007]

As described above, the conventional artificial turf is a rigid one such as a brush or a scrubber. Therefore, when the artificial turf is constructed on a veranda or a poolside, shavings are entangled on the pile surface. The hair tangled on the pile surface cannot be easily removed by a vacuum cleaner or the like, and the tangled hair gives discomfort.

[0008] Therefore, it is desirable to make the pile a loop pile, especially in an artificial lawn for poolside where hair is easily formed.

However, unlike the case of the cut pile, in the case of the loop pile, the twist of the pile yarn applied to bind the plastic monofilament remains in the loop pile, and the loop of each plastic monofilament is formed by the applied twist. It is difficult to form a loop pile that has been opened like a cut pile because it is in a united state.

Of course, in order to facilitate the opening of the loop pile, the number of twists applied to the pile yarn may be reduced, but in this case, the pile yarn is unraveled into individual monofilaments at the time of tufting. This makes it difficult for the looper to receive them from the needle, and makes it difficult to tuft.

If the fineness of the monofilament is set to 100 denier or less, which is close to that of the multifilament, the filaments can be bound with a small number of twists. However, the pile is soft and has low elasticity like a carpet. It cannot be used as an artificial lawn.

[0012]

SUMMARY OF THE INVENTION Accordingly, the present invention is to provide an artificial lawn which is formed into a monofilament having a high resilience and which is formed as a loop pile having a rigid and still bulky hair like a brush or a scrubber. It is assumed that.

That is, the artificial turf 16 according to the present invention is a pile yarn obtained by winding a yarn 13 around a bundle of monofilaments 12 having a thickness of 3000 denier or more and formed of several plastic monofilaments 11 having a fineness of 300 denier or more. A loop pile 15 is formed, and the thread 13 is more flexible than the monofilament 11 and the thickness (denier) of the monofilament bundle 12 is increased.
And the winding pitch P of the thread 13 wound around the monofilament bundle 12 is 1/5 or less of the thickness (denier) of
0.3 to 1 times the length L of the developed loop pile 15 from the base to the base (P = 0.3L to 1.0)
L).

As described above, the monofilament bundle 12 has the yarn 1
3 are wrapped in a monofilament bundle 12
Is an axis and twisted so as to form a bevel twist around which a yarn 13 is wound, or a monofilament bundle in a non-twisted state in which the monofilaments 11 are arranged in parallel in a production process of a bundled spun yarn. 12 may be set in the binding device instead of the spinning sliver, and the yarn 13 may be wound around the untwisted state.

The reason why the thread 13 is more flexible than the monofilament 11 and the thickness (denier) thereof is set to be not more than one fifth of the thickness (denier) of the monofilament bundle 12 is that the thread 13 is This is for facilitating close contact around the monofilament bundle 12, and 0.3 to 1 times the total length L of the loop pile 15 in which the winding pitch P of the yarn 13 is developed (P =
(0.3 L to 1.0 L) is the state in which the loop pile 15 is formed even though the yarn 13 is tightly bound around the monofilament bundle 12 in the state of the pile yarn 14 not forming the loop pile 15. In this case, the loop of the thread 13 slips off from the loop of the monofilament, so that the loop 18 of each monofilament is released from the binding by the thread 13 and opens the hair in a bulky manner. This will be described in detail together with the effects of the present invention.

[0016]

(1) Thread 13 is monofilament 1
Since it is more flexible and thinner than the monofilament bundle 12, it tightly adheres to the surface of the monofilament bundle 12 to bind the monofilaments (11).

Therefore, in the process of weaving the pile 15, the monofilament bundle 12 does not unravel into the individual monofilaments 11, and the pile yarn 14 becomes easy to handle. In particular, when the pile yarn 14 is inserted into the base fabric 17 in the tufting process. Since the individual monofilaments 11 do not form discrete loops but form a single pile thread loop, the looper can easily receive it from the needle and easily tuft it.

(2) Conventionally, in the case of a monofilament having a circular cross section such as a fishing line or a tengs yarn, the surface is smooth, and the flatness conventionally used for artificial turf (the portion where the cross section is the largest and the smallest) is used. It is difficult to bind as compared to a tape-shaped monofilament having a size of 10 or more. In particular, in a Tengs yarn having a fineness of 300 denier or more, it cannot be twisted and bound by a normal twisting device, and such a circular cross section is used. An artificial lawn with a pile of monofilaments cannot be obtained.

However, in a monofilament bundle 12 in which monofilaments having a circular cross section are aligned in parallel, the individual monofilaments are in close contact with each other, and are tied by a thread 13 as compared with a tape-shaped monofilament. easy.

Therefore, according to the present invention, it is possible to obtain a novel artificial turf having a flatness of 2-3 or less and a monofilament having a substantially circular cross section, which is not conventionally used for the pile of the artificial turf. The present invention is advantageous for the production of artificial turf that is inserted into the base fabric 17 to form the loop pile 15.

(3) Within the bundle of monofilaments 12, the monofilaments 11 are aligned in parallel, and the loop pile 15 is constituted by the loops 18 of the monofilaments 11. By the way, the yarn 13 in the state of the pile yarn 14 is tightly wound around the monofilament bundle 12, and binds the monofilament bundle 12 in a helically curved form. In the state where the fibrous material 15 is formed, the shape of the spirally wound thread 13 wound around the monofilament bundle 12 becomes similar to the shape of the loop 18 of the curved monofilament 11. Then, the thread 13 also forms a loop 19 like the monofilament 11.

The winding pitch P of the thread 13 wound around the monofilament bundle 12 is 0.3 to 0.3 L of the length L of the developed loop pile 15 from the base to the base.
Since it is one time (P = 0.3L to 1.0L), the loop 19 formed by spirally bending the thread 13 is more similar to the shape of the loop 18 of the monofilament 11. .

In the present invention, the monofilament 11
Is more rigid than the thread 13, the loop 19 formed by the thread 13 tends to slip off from the loop 18 formed by the monofilament 11.

For this reason, the pile yarn 14 is
In the state in which the loop 5 is formed, the loop 18 of the monofilament 11 is released from the binding of the thread 13, and the loop 18 is divided into individual pieces, thereby forming the open loop pile 15.

Therefore, the present invention is advantageous when an artificial lawn is made by using the non-flat monofilament 11 made of a polyester fiber which is rigid and hardly twisted and bound by a twisting device as the pile yarn 14.

The thread 13 only binds the monofilament bundle 12 until the loop pile 15 is formed in this way, and becomes unnecessary after the loop pile 15 is formed. From, water-soluble fibers such as vinylon and fibers that are easily broken by heat shrinkage or heat melting, or
It may be a tape obtained by cutting paper or a film.

(4) Since the pile surface of the artificial turf 16 is formed at the top of the loop 18 of the round and rigid monofilament 11 on which the ball easily rolls, the golf ball that has fallen when it is constructed on the slope of the golf driving range. But easy to collect under slopes.

In this case, the polyester fiber monofilament 11 suitable for the present invention has a higher heat melting point and a higher heat melting property than vinylidene fiber, nylon, and the like conventionally used for artificial grass, and thus jumps there. It does not melt due to frictional heat with the golf ball, so that the melt of the pile 15 does not stick and the golf ball is not contaminated.

Therefore, also in this respect, the pile yarn 14
It is recommended to use a non-flat monofilament 11 made of polyester fiber.

(5) Since the artificial grass 16 according to the present invention is formed by the loop pile 15 having a rigid pile surface, the hair and the like are unlikely to be entangled, and the water on the pile surface is formed by the loop pile 1.
5 and easily flow down to the root, and even when stepping on the pile surface, the water at the root of the loop pile 15 hardly adheres to the sole.

Therefore, the artificial turf 16 of the present invention is very convenient for a poolside or a veranda.

As described above, according to the present invention, the pile surface is rigid, the ball is easy to roll, the drainage is good, the shavings and hair are not easily entangled, and the loop 1 of each monofilament is used.
8, the pile pile 15 is beautifully opened, so that the material cost of the pile is low and a new artificial lawn which is very convenient for a driving range, a veranda, a poolside, etc. can be obtained.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional side view of an artificial lawn according to the present invention.

FIG. 2 is a plan view of a pile yarn according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Monofilament 12 Monofilament bundle 13 Thread 14 Pile thread 15 Loop pile 16 Artificial turf 17 Base cloth 18 Monofilament loop 19 Thread loop

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E01C 13/08 A63C 19/00

Claims (3)

(57) [Claims] 1. A loop pile 15 is formed by pile yarns 14 which are wound around a monofilament bundle 12 having a thickness of 3000 denier or more and formed into a bundle of several plastic monofilaments 11 having a fineness of 300 denier or more. The yarn 13 is the monofilament 11
The thickness (denier) of the monofilament bundle 12 is less than or equal to one-fifth of the thickness (denier) of the monofilament bundle 12, and the thread 13 wound around the monofilament bundle 12
Is 0.3 to 1 times the length L of the developed loop pile 15 from the base to the base cloth (P
= 0.3 L to 1.0 L). 2. The artificial turf 16 according to claim 1, wherein the plastic monofilament 11 according to claim 1 is a non-flat yarn having a flatness of 2 or less. 3. The loop pile 15 according to claim 1, wherein
The artificial turf 16 according to claim 1, wherein the artificial turf is formed by tufting pile yarns 14 on a base cloth 17.