CN103764915A

CN103764915A - Synthetic fibre and an artificial lawn comprising such a fibre

Info

Publication number: CN103764915A
Application number: CN201280032429.8A
Authority: CN
Inventors: J-C·奥古斯特; H·R·马
Original assignee: Ten Cate Thiolon BV
Current assignee: Ten Cate Thiolon BV
Priority date: 2011-07-01
Filing date: 2012-06-27
Publication date: 2014-04-30
Anticipated expiration: 2032-06-27
Also published as: AU2012278394A1; KR102373501B1; ZA201400486B; KR20210005736A; WO2013006042A1; CN103764915B; PL2726674T3; AU2012278394B2; EP2726674A1; EP2726674B1; RU2014101667A; TR201910153T4; ES2734059T3; RU2637261C2; KR20140071325A

Abstract

Synthetic fibre of the monofilament type for use in an artificial lawn, in particular an artificial sports lawn, which synthetic fibre has a curved cross section, wherein the synthetic fibre has a centre line arc length to maximum thickness of less than 8, preferably between 4.5 and 3.8, and even more preferably between 4.4 and 4.0 and wherein the circumferential surface of the fibre is provided with a wave shaped pattern.

Description

Synthetic fibers and the chinampa that comprises this fiber

Technical field

The chinampa that the present invention relates to synthetic fibers and comprise this fiber.More particularly, the present invention relates to have the monofilament-type fiber of careless shape of crooked cross section and the chinampa, particularly artificial grass sports field that comprises this fiber.

Background technology

Natural grass is used conventionally continually, and the result of its result and other reasons (weather effect for example changing) causes it to be subject to a large amount of injuries.Many chinampas have been introduced so that substituting of natural grass to be provided.These chinampas are for indoor also for outdoor.The known example of this outdoor chinampa is artificial grass sports field, such as for carrying out the motions such as football, hockey, tennis, rugby.For example identical applicant discloses this chinampa in WO 2010/082816 A1.

Chinampa needs less maintenance as artificial grass sports field, and compares with the lawn of natural grass and use more continually it/sports thereon.Yet chinampa must have specific character can bear the load that they cause it due to frequent use.They must demonstrate natural appearance in addition.

The defect that is used for the synthetic fibers of chinampa is that they in use often present the flat orientation with respect to floor surface.This can cause so-called in lawn " naked patch ", and can increase injured risk thus, reduces sports characteristic and/or demonstrates more not natural outward appearance etc.

In order to overcome at least in part this defect, can on chinampa, provide infill thick-layer.This infill thick-layer is for for example disclosed in EP 1158099 A2.Yet, this infill thick-layer is installed than more labour intensive of natural lawn is installed.In addition, need in fact more maintenance, because As time goes on, infill is due to the inhomogeneous use on the lawn more uneven distribution that becomes.

Alternative being to provide of infill thick-layer has the rigidity of increase and the chinampa of elastic synthetic fibers.This result can realize by changing chemical compound and/or processing method.Yet this is undesirable, because this chinampa of abrasion that can cause more complicated manufacturing process and/or there is the injured risk of increase.

Another solution of problem as above is the geometry that regulates synthetic fibers, for example disclosed in WO 2010/082816 A1.Fiber disclosed herein has such geometry: it applies the tolerance that load thereon has increase when moved in ground on the scene.Yet the surface of fiber is level and smooth, and be used in combination with causing the chemical compound of glittering not natural synthetic outward appearance.In WO 2005/005730 A1, the fiber that comprises rigidity amplified medium is disclosed.These media (that is prominent rib) increase the rigidity/resilience of fiber, and are better than rough surface and demonstrate light scattering effect, have weakened the glittering outward appearance of synthetic fibers.

Due to all existence of thickening or the part (that is so-called " ridge " or " fold ") that narrows down in disclosed fiber in document WO 2010/082816 A1 and WO 2005/005730, concentrating of generating material stress inevitably when load applies thereon, this may cause fracture or the splitting of fiber.

The object of the present invention is to provide the improved synthetic fibers for chinampa.More specifically, the present invention also aims to provide that a kind of splitting having reduced due to fiber causes polishes risk and have the synthetic fibers of improved similar natural outward appearance.

Summary of the invention

According to a first aspect of the invention, provide a kind of for chinampa, especially for the synthetic fibers of the monofilament-type on artificial motion lawn, described synthetic fibers have crooked cross section, and the center line arc length (L) of wherein said synthetic fibers is less than 8 with the ratio (L/T) of maximum ga(u)ge (T).More particularly, on the other hand, the ratio (L/T) of described center line arc length (L) and maximum ga(u)ge is between 4.5 and 3.8, more preferably between 4.4 and 4.0.

In another embodiment, the nonreentrant surface radius (R1) of synthetic fibers and the ratio (R1/R2) of recessed surface radius (R2) are less than 0.9.More particularly, the ratio (R1/R2) of described nonreentrant surface radius (R1) and recessed surface radius (R2) is between 0.6 and 0, more particularly between 0.35 and 0.

In another embodiment, the line mass density of synthetic fibers is between 1000 Tekes and 2500 Tekes.

According to WO 2005/005730 A1, the synthetic fibers with rigidity amplified medium are known.These media of arranging with the rib of dashing forward increase the rigidity of fiber.Rigidity amplified medium provides the two ends at the central axis of fiber or the alar part of fiber.These rigidity amplified mediums have increased the rigidity of fiber on the one hand, have increased but then the risk of fracture or the splitting of fiber.Yet this is the undesirable side effect of this design.In sports process, fiber is exposed to the large load applying thereon.This large load causes fiber to demonstrate material stress, and described stress concentrates in the weakness of fiber.These weakness are that the unsmooth surface due to fiber makes the concentrated point of stress.Because the rib of the interpolation on fiber demonstrates rough transformation having the some place that rib shape is outstanding, in the use procedure in place or inevitably after use, at the concentrated of stress of this point, will directly cause fibrous fracture or splitting.

The fiber of known prior art (for example, by the known fiber of WO 2005/005730 A1) has the ratio of certain thickness and center line arc length, and this ratio and other have determined the character/characteristic of fiber, for example flexible, resilience and flexural strength.For crooked cross section fibres, this thickness is maximum ga(u)ge, and is arranged in the core (for example referring to Fig. 1 a-d Reference numeral " T ") of fiber.Center line arc length is the length (for example, referring to the Reference numeral in Fig. 1 a-d " L ") of center line.Because the center line of crooked fiber has certain curvature or radius, the length of this center bank is greater than the integral width of fiber (W).According to the ratio of fiber of the present invention, not to determine by the width of fiber, but determine by the length of center camber line.

Synthetic fibers according to a first aspect of the invention have the L/T ratio that is less than 8, preferably between 4.5 and 3.8, more preferably between 4.4 and 4.0.According on the other hand, fiber has the R1/R2 ratio that is less than 0.9, preferably between 0.6 and 0, more preferably between 0.35 and 0.According on the other hand, synthetic fibers have the line mass density between 1000 Tekes and 2500 Tekes.

Studies show that to there is improved aesthetic feeling (for example profile) and engineering properties with this synthetic fibers of more above-mentioned aspect according to a first aspect of the invention or according to a first aspect of the invention, and closely simulate natural sod.Prior art synthetic fibers demonstrate the rigidity of non-optimum when load applies thereon, and there is the L/T in the scope of line mass density as above, the synthetic fibers according to an aspect of the present invention of R1/R2 ratio have the rigidity of the optimization of increase when load applies thereon.Fiber demonstrates the combination of resilience enhancing and that more optimize, flexibility, strength and stiffness.

In another embodiment, crooked cross section has core and tapered edge, and described core has maximum ga(u)ge, and described tapered edge has minimum thickness.The fiber geometries of this fiber thickness combination provides the rigidity of fiber and the balance of flexibility and flexural resilience of expectation, prevents the flat orientation in chinampa.

In another embodiment, shape of cross section has circular segment cross section, and in another embodiment, synthetic fibers have crooked protruding side and the side being formed by straight lines.Synthetic fibers according to an aspect of the present invention can have the line of optional position between protruding side and the straight line on another side and strong concave.

In circumferential surface, there are the synthetic fibers according to an aspect of the present invention of waveform patterns around, with respect to for example there is the rigidity of enhancing by the known prior art fiber of WO 2005/005730, because whole ripples of pattern play the effect of rigidity reinforcement.Additional advantage is to have the level and smooth transformation of the surface profile of a plurality of waveform patterns.This waveform patterns is not in the situation that increase the fracture of fiber or the risk of splitting demonstrates the rigidity of enhancing.The whole loads that in use apply on fiber along the whole surface of fiber by a plurality of wavelength-divisions every.Due to the stress distribution of this enhancing, do not have stress concentration point to be present on the surface of fiber.Therefore there is the unlikely splitting of fiber or the fracture of this waveform patterns.In another embodiment, waveform patterns can also be arranged continuously in a longitudinal direction and extend.

For the production of synthetic fibers, the selection of chemical compound is limited.Multiple polymers can be for the production of fiber.For example can use polyethylene, polypropylene, polyamide or its combination.When fiber forms generation by these, described fiber has luminous effect in its surface.This luminous effect gives fiber not natural outward appearance.Owing to some chemical addition agent being added into described composition for reducing this effect, it has also changed over undesired effect by the characteristic properties of fiber.Yet the fiber with waveform patterns surface provides solution to this problem.Do not need to change chemical compound or use additive.Waveform on fiber surface has significant light scattering effect, so fiber has more the outward appearance of " darkness ".Ripple patterned surfaces is reverberation in different directions, causes light scattering effect.Synthetic fibers can have circular segment cross section or have the cross section with the side being formed by straight lines with protruding side.

Artificial fiber according to an aspect of the present invention has crooked cross section, described cross section has maximum ga(u)ge core and tapered edge, at its circumference, have waveform patterns around, the fiber properties of described artificial fiber can be by changing the amount of waveform and/or regulating its sizes/dimensions further to optimize.The amount that increases waveform will increase light scattering effect, make fiber darker, therefore more resemble natural.The sizes/dimensions that increases waveform will cause the rigidity of fiber to increase, because ripple plays the effect of rigidity intensifier.Larger ripple strengthens effect by demonstrating larger rigidity.

In another embodiment, waveform patterns is sinusoidal waveform pattern.The advantage of sinusoidal waveform pattern is that it has ripple more level and smooth between the antinode of pattern and changes.Therefore, fiber can be resisted larger load in the situation that not losing rigidity and not increasing splitting/risk of breakage.

In another embodiment, waveform patterns is sickleshaped pattern.When the surface of fiber has sickleshaped pattern, more fiber surface is embossed, that is depression.Get to most light of fiber surface and got to the embossed position of fiber.Yet these light do not reflect back towards light source, they reflect towards diverse location in embossed sickleshaped.Light reflects like this, because the gloss reducing causes the shadow-casting effect of giving the more natural outward appearance of fiber.

In another embodiment, the waveform patterns in the protruding side of crooked synthetic fibers has the antinode of the waveform patterns equal amount in the recessed side with crooked synthetic fibers.In addition, the antinode of the waveform patterns in the protruding side of crooked synthetic fibers can with the recessed side of crooked synthetic fibers on the node of waveform patterns arrange on the contrary.

In different embodiments, the waveform patterns in the protruding side of crooked synthetic fibers has than the antinode of the larger quantity of the waveform patterns in the recessed side of crooked synthetic fibers.

In another embodiment, or be at least 4 in the quantity of protruding side or the antinode in recessed side, but no more than 30.

In another embodiment, at least some ripples of ripple pattern have different sizes.

By changing the size of waveform, can change the characteristic of fiber.By combination different size, protuberance, size etc., can realize the combination of effect.For example large ripple can replace with small echo, combines different effects, such as rigidity, light scattering effect, fiber resilience etc.

In another embodiment of the present invention, provide a kind of for chinampa, for the synthetic fibers of the monofilament-type on artificial motion lawn, described synthetic fibers have crooked cross section especially, and the circumferential surface of wherein said synthetic fibers has waveform patterns.In addition, waveform patterns is arranged on the longitudinal direction of fiber.In another embodiment, waveform patterns is sinusoidal waveform pattern or sickleshaped (on June 30th, 2011) pattern.

The present invention also provides chinampa in embodiments, artificial motion lawn particularly, it comprises basic unit, described basic unit have be attached to basic unit according to the artificial fiber of any above-mentioned feature.

Above-mentioned feature of the present invention and other features and advantage of the present invention will illustrate hereinafter by reference to accompanying drawing, and described accompanying drawing only provides and do not limit the present invention in the mode of explanation.

Accompanying drawing explanation

Fig. 1 a-1b shows the preferred embodiment of the synthetic fibers of the ratio with center line arc length and maximum ga(u)ge according to an aspect of the present invention.

Fig. 1 c-1d shows the ratio of the center line arc length have according to an aspect of the present invention and maximum ga(u)ge and has the preferred embodiment with the synthetic fibers of the circumference of waveform patterns.

Fig. 2-11 show synthetic fibers according to other aspects of the invention, and wherein fiber has different shape of cross sections, and fiber has different shapes around in circumferential surface;

Figure 12 and 13 schematically shows some embodiments that comprise according to the chinampa of synthetic fibers of the present invention.

The specific embodiment

In order to understand better the present invention, below to Reference numeral identical in the description of accompanying drawing, will represent similar element.

Fig. 1 a shows the cross-sectional view of embodiment of the present invention, wherein shows the synthesize/artificial fiber with Reference numeral 10a, for example, synthesize careless motor fiber, and it is preferably by extrusion and obtains monofilament-type.

The bend radius 10a6 of fiber 10a or the amount of curvature that are presented in Fig. 1 a exert an influence to having the characteristic of the chinampa of fiber 10a.Increase curvature and will increase the flexible rigidity of fiber, this can present necessarily flat orientation by causing in the chinampa of fiber 10a forming section.Yet, increase rigidity and can reduce the sports characteristic of chinampa, because while racing thereon, it can cause injured risk to increase, while particularly carrying out sliding tackle thereon.

Yet reducing rigidity will present more flat orientation in the process that often makes fiber race on chinampa.Therefore, about the functional of fiber of the sports characteristic of chinampa, will lose.By " naked " patch appearing on place, injured risk increases herein.

Therefore, thereby need optimum rigidity to prevent flat orientation on the one hand, the relatively soft chinampa to sportsman close friend with low injured risk is also provided on the other hand.There is the artificial fiber of this specific character in the disclosed embodiment of the present invention of Fig. 1 a-1d.

Fig. 1 a display fibers 10a has crooked shape, and the bend radius 10a6 being wherein presented in Fig. 1 a is only symbolistic.The invention is not restricted to be presented at the curvature in Fig. 1 a, more crooked or not too crooked fiber is also considered to be incorporated in embodiments of the invention.Recessed surface radius 10a7(R2 in this embodiment) and nonreentrant surface radius 10a8(R1) between ratio be less than 0.9, preferably between 0.6 and 0, more preferably between 0.35 and 0.The fiber being presented in Fig. 1 b has flat surface at its recessed side R2.

Other the properties influence artificial grass sports field of fiber except rigidity can athletics.In order to provide picture natural artificial grass sports field, fiber used should also have optimum flexibility and resilience therein.Splitting or fracture when flexibility can prevent that fiber from standing high material stress while racing thereon.After needing resilience applying the impact of power thereon for fiber with the process in sports, again present upright orientation.

Be presented at fiber 10a in Fig. 1 a at the 10a1a that keeps to the side, 10a1b place conical gradual change, at core 10a1c place, reach its maximum ga(u)ge.The fiber 10a herein showing has edge 10a1a, the 10a1b of relative thin.Increase this thickness and will increase the rigidity of fiber.Edge 10a1a and 10a1b are preferably round.Therefore, fiber 10 according to the present invention not only has stubbed edge (this has positive impact to sports characteristic), and when for example sliding or stopping, it has also reduced injured risk.

The thickness T 10a3 measuring in the middle of the core 10a1c that the center line arc length 10a6 of disclosed fiber 10a is clearly greater than at fiber in Fig. 1 a.Center line arc length 10a6 is the length measurment to the dotted line Rc10a6 of other end 10a1b by one end 10a1a from fiber, and defines by this length.According to the present invention, the ratio (L/T) between center line arc length 10a6 and maximum ga(u)ge 10a3 is less than 8, preferably between 4.5 and 3.8, more preferably between 4.4 and 4.0.

According to an aspect of the present invention and according to the line mass density of the fiber of the disclosed preferred embodiment of Fig. 1 in the scope between 1000 Tekes and 2500 Tekes.Because the ratio of center arc length and thickness depends on the Tekes of fiber, when providing one of center arc length and thickness with Tekes, center arc length or the thickness of fiber according to an aspect of the present invention can calculate.

Above-mentioned characteristic can change, and according to an aspect of the present invention, can realize the combination of rigidity, flexibility and elastic optimum, and wherein fiber is the fiber 10a with L/T ratio as above, and described fiber 10a demonstrates improved characteristic.Studies show that, especially, according to the rigidity of fiber 10a in this respect, with respect to prior art fiber, strengthen in fact.Fiber 10a characteristic makes not only to have realized sufficient resilience and flexibility, also demonstrate flexible rigidity, described flexible rigidity makes no longer unnecessarily to present flat orientation in chinampa or in artificial grass sports field, the situation that described artificial grass sports field is partly formed by fiber 10a for its synthetic careless motor fiber.

Preferably by copolymer or the blend of polypropylene, polyethylene, polyamide, one or more these polymer, made according to an aspect of the present invention and according to this fiber of Fig. 1 a-1d.In the possible embodiment of synthetic fibers, therefore fiber can be made by rubber, and it is permanent elasticity synthetic polymer, or is made by the synthetic polymer (copolymer) remaining on when standing to load in elastic range.

In the characteristic of front mentioning, can change, according to an aspect of the present invention, can realize the optimum combination of described characteristic, wherein fiber is the fiber 10c shown in Fig. 1 c, and described fiber 10c has waveform patterns around in circumferential surface.Waveform patterns has node 10c9b and antinode 10c9a.At the fiber 10c shown in Fig. 1 c, in its both sides, there is node 10c9b and the antinode 10c9a of inequality.The recessed side of fiber 10c, this side is more than the core 10c1c of fiber 10c, and described recessed side has seven node 10c9b and six antinode 10c9a in this preferred embodiment.The protruding side of fiber 10c, this side is below the core 10c1c of fiber 10c, and described protruding side has 11 node 10c9b and ten antinode 10c9a in this preferred embodiment.The node 10c9b of fiber plays the effect of rigidity intensifier, can be varying sized, amount and position with impact for the required rigidity of specific chinampa.

The mode that fiber 10c has waved surface has increased its natural appearance.The surperficial light of getting to fiber 10c points to the direction different from the direction in they sources.Get to according to the infinite ray of the light of the fiber 10c with waved surface of the present invention and will point to different directions.The amount of ripple/antinode and node and the sizes/dimensions of ripple affect this light scattering effect.Studies show that, the fiber 10c according to the present invention with waveform patterns as shown in Fig. 1 c has the light scattering effect of increase, and therefore has the natural appearance that approaches very much real grass.

In Fig. 2, shown different other embodiments of the present invention, wherein fiber 20 has waveform patterns, and described waveform patterns is sinusoidal waveform pattern.This pattern has more level and smooth transformation between the 21a of forward and the antinode 21b of negative sense.In Fig. 2, disclosed node 21c lacks shape edges.Level and smooth transformation between antinode (21a of forward and the 21b of negative sense) prevents fiber splitting or fracture, and realizes the application life increasing thus.

At the fiber 20 shown in Fig. 2, there is relatively little He sharp edge 20a and 20b, and to have be 3.8 optimum L/T ratio.Yet this ratio is 5 to the maximum, preferably, between 3 and 4.5, more preferably, between 3.5 and 4, as mentioned above, optimum ratio is 3.8.The recessed side of fiber 20 has eight node 21c and seven antinode 21a, 21b.The opposite side of the below of the core 20c in fiber 20 is the protruding side of fiber 20 in the drawings, and it has ten node 21c and 9

antinode

21a, 21b.

In Fig. 3, disclose different embodiment of the present invention, wherein fiber 30 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference.Waveform patterns consists of the antinode 31a of node 31c and forward.The antinode that sine-shaped negative sense side is negative sense, it does not exist in this pattern.The advantage of this pattern is that more substantial rigidity intensifier providing at its circumference is provided for it around, because the antinode 31a of each forward plays the effect of this rigidity intensifier.In this embodiment, fiber 30 has rounded edge 30a, the 30b of relative thin.L/T ratio at the fiber 30 shown in Fig. 3 is 3.8 of optimum.

Recessed side in the embodiment of the fiber 30 shown in Fig. 3 has seven (forward) antinode 31a and eight node 31c, and fiber 30 has nine (forward) antinode 31a and ten node 31c in its protruding side.

In Fig. 4, disclose another different embodiment of the present invention, wherein fiber 40 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference.Waveform patterns consists of the antinode 41b of node 41c and negative sense.Because its shape, this waveform patterns may be concentrated light in the antinode 41b of negative sense ripple.Therefore, realized shadow-casting effect, by make fiber 40 more the outward appearance of " darkness " increased the natural similarity of fiber 40.L/T ratio at the fiber 40 shown in Fig. 4 is 5.1 of optimum.Recessed side in the embodiment of the fiber 40 shown in Fig. 4 has seven (negative sense) antinode 41b and eight node 41c.In its protruding side, fiber 40 has nine (negative sense) antinode 41b and ten node 41c.

In Fig. 5, disclose another embodiment of the present invention, wherein fiber 50 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference.Waveform patterns consists of negative sense antinode 51b and forward antinode 51a and node 51c.This waveform patterns protruding side with respect to fiber 50 in the recessed side of fiber 50 will have different shadow-casting effects.Fiber 50 can provide in chinampa or artificial grass sports field with bundle, and they often present different orientation mutually.When watching while having the chinampa of this fiber 50 or sports ground, they seem to have different colors, and this has increased its natural outward appearance.

L/T ratio at the fiber 50 shown in Fig. 5 is 4.3 of optimum.Recessed side in the embodiment of the fiber 50 shown in Fig. 5 has seven (negative sense) antinode 51b and eight node 51c, and fiber 50 has nine (forward) antinode 51a and ten node 51c in its protruding side.

Fig. 6 shows embodiment of the present invention, and wherein fiber 60 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference.Waveform patterns consists of the negative sense antinode 61b in protruding side and the forward antinode 61a in its recessed side and node 61c.This waveform patterns protruding side with respect to fiber 60 in the recessed side of fiber 60 will have different shadow-casting effects.Fiber 60 often presents different orientation mutually, and therefore can seem to have different colors, and this has increased its natural outward appearance.

L/T ratio at the fiber 60 shown in Fig. 6 is 4.3 of optimum.Recessed side in the embodiment of the fiber 60 shown in Fig. 6 has seven (forward) antinode 61a and eight node 61c, and fiber 60 has nine (negative sense) antinode 61b and ten node 61c in its protruding side.

In Fig. 7, disclose the different embodiment of the present invention, wherein fiber 70 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference, yet fiber (referring to cross-sectional view) is flat in a side.Waveform patterns (in this embodiment for sinusoidal pattern) consists of negative sense antinode 71b and forward antinode 71a and node 71c.This sinusoidal pattern is owing to can reducing the risk of splitting or fracture in the level and smooth transformation at node place.L/T ratio at the fiber 70 shown in Fig. 7 is 2.7 of optimum.Flat sides in the embodiment of the fiber 70 shown in Fig. 7 has seven (two kinds of forward and negative senses)

antinode

71a, 71b and eight node 71c, and fiber 70 has nine (two kinds of forward and negative senses)

antinode

71a, 71b and ten node 51c in its protruding side.

In Fig. 8, disclose embodiment of the present invention, wherein fiber 80 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference, yet fiber (referring to cross-sectional view) is flat in a side.Waveform patterns consists of the antinode 81a of node 81c and forward.L/T ratio at the fiber 80 shown in Fig. 8 is 2.7 of optimum.The flat sides of this embodiment of fiber 80 has seven (forward) antinode 81a and eight node 81c, and fiber 80 has nine (forward) antinode 81a and ten node 81c in its protruding side.

In Fig. 9, disclose another embodiment of the present invention, wherein fiber 90 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference, and wherein fiber (referring to cross-sectional view) is flat in a side.Waveform patterns consists of the antinode 91b of node 91c and negative sense.L/T ratio at the fiber 90 shown in Fig. 9 is 2.9 of optimum.The flat sides of this embodiment of fiber 90 has seven (negative sense) antinode 91b and eight node 91c, and fiber 90 has nine (negative sense) antinode 91b and ten node 91c in its protruding side.

In Figure 10, disclose another embodiment of the present invention, wherein fiber 100 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference, and wherein fiber (referring to cross-sectional view) is flat in a side.Waveform patterns consists of with two kinds of antinode 101a, 101b negative sense and node 101c forward.L/T ratio at the fiber 100 shown in Figure 10 is 2.9 of optimum.The flat sides of this embodiment of fiber 100 has seven (negative sense) antinode 101b and eight node 101c, and fiber 100 has nine (forward) antinode 101a and ten node 101c in its protruding side.

In Figure 11, disclose another embodiment of the present invention, wherein fiber 110 has crooked cross section, and the cross section of described bending has waveform patterns around at circumference, and wherein fiber (referring to cross-sectional view) is flat in a side.Waveform patterns consists of with two kinds of

antinode

111a, 111b negative sense and node 111c forward.L/T ratio at the fiber 110 shown in Figure 11 is 2.9 of optimum.The flat sides of this embodiment of fiber 110 has seven (forward) antinode 111a and eight node 111c, and fiber 110 has nine (negative sense) antinode 111b and ten node 111c in its protruding side.

Figure 12 and 13 shows and wherein can use according to the chinampa of synthetic fibers of the present invention some embodiments of artificial grass sports field for example.In this two width figure, chinampa comprises pad 1, and some synthetic fibers 2(are corresponding to the fiber 10a-d, 20,30,40,50,60,70,80,90 shown in Fig. 1 to 11,100 and 110) in the position shown in Reference numeral 3, for example by synthetic tuff or braiding, be attached to described pad 1.Synthetic fibers 2 through extruding can be attached to individually pad 1 or be attached to pad 1 with the bundle of the fiber 2a-2c that is for example wound around.Shim member in Figure 13 has open structure, and it consists of the grid that supports yarn 1a-1b, and synthetic fibers 2 are attached to the grid of described support yarn 1a-1b.

Claims

1. for a chinampa, for the synthetic fibers of the monofilament-type on artificial motion lawn, described synthetic fibers have crooked cross section especially, and the center line arc length of wherein said synthetic fibers and the ratio of maximum ga(u)ge are less than 8.

2. synthetic fibers according to claim 1, the center line arc length of wherein said synthetic fibers and the ratio of maximum ga(u)ge are between 4.5 and 3.8.

3. synthetic fibers according to claim 1, the center line arc length of wherein said synthetic fibers and the ratio of maximum ga(u)ge are between 4.4 and 4.0.

4. according to synthetic fibers in any one of the preceding claims wherein, the nonreentrant surface radius of wherein said synthetic fibers and the ratio of recessed surface radius are less than 0.9.

5. synthetic fibers according to claim 4, the ratio of wherein said nonreentrant surface radius and recessed surface radius is between 0.6 and 0.

6. synthetic fibers according to claim 4, the ratio of wherein said nonreentrant surface radius and recessed surface radius is between 0.35 and 0.

7. according to synthetic fibers in any one of the preceding claims wherein, the line mass density of wherein said synthetic fibers is between 1000 Tekes and 2500 Tekes.

8. according to synthetic fibers in any one of the preceding claims wherein, the cross section of wherein said bending has core and tapered edge, and described core has maximum ga(u)ge, and described tapered edge has minimum thickness.

9. according to synthetic fibers in any one of the preceding claims wherein, wherein said synthetic fibers have circular segment cross section.

10. according to synthetic fibers in any one of the preceding claims wherein, wherein said shape of cross section has protruding side and the side being formed by straight lines.

11. according to synthetic fibers in any one of the preceding claims wherein, and wherein said synthetic fibers have crooked cross section, and the described circumferential surface of wherein said synthetic fibers has waveform patterns.

12. synthetic fibers according to claim 11, wherein said waveform patterns is arranged on the longitudinal direction of described fiber.

13. according to the synthetic fibers described in claim 11 or 12, and wherein said waveform patterns is sinusoidal waveform pattern.

14. according to the synthetic fibers described in claim 11 or 12, and wherein said waveform patterns is sickleshaped pattern.

15. according to claim 11 to the synthetic fibers described in any one in 14, and wherein the waveform patterns in the recessed side of the waveform patterns in the protruding side of the synthetic fibers of described bending and the synthetic fibers of described bending at opposite side has the antinode that quantity equates.

16. synthetic fibers according to claim 15, wherein the node of the waveform patterns in the recessed side of the antinode of the described waveform patterns in protruding side and synthetic fibers in the described bending of opposite side arranges on the contrary.

17. according to claim 11 to the synthetic fibers described in any one in 14, and wherein the waveform patterns in the protruding side of the synthetic fibers of described bending has than the antinode of the larger quantity of waveform patterns in the recessed side of the synthetic fibers of the described bending at opposite side.

18. according to claim 11 to the synthetic fibers described in any one in 17, and wherein, in the same circumference of the cross section of described fiber, at least some ripples in described waveform patterns have different sizes.

19. 1 kinds for chinampa, and for the synthetic fibers of the monofilament-type on artificial motion lawn, described synthetic fibers have crooked cross section especially, and the circumferential surface of wherein said synthetic fibers has waveform patterns.

20. synthetic fibers according to claim 19, wherein said waveform patterns is arranged on the longitudinal direction of described fiber.

21. according to the synthetic fibers described in claim 19 or 20, and wherein said waveform patterns is sinusoidal waveform pattern.

22. according to the synthetic fibers described in claim 19 or 20, and wherein said waveform patterns is sickleshaped pattern.

23. 1 kinds of chinampas, are artificial motion lawn especially, and it comprises basic unit, described basic unit have be attached to described basic unit according to artificial fiber in any one of the preceding claims wherein.