CN104411886A - Artificial lawn - Google Patents
Artificial lawn Download PDFInfo
- Publication number
- CN104411886A CN104411886A CN201380034756.1A CN201380034756A CN104411886A CN 104411886 A CN104411886 A CN 104411886A CN 201380034756 A CN201380034756 A CN 201380034756A CN 104411886 A CN104411886 A CN 104411886A
- Authority
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- China
- Prior art keywords
- careless silk
- artificial lawn
- length
- silk
- zero
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
Provided is an artificial lawn that has a high durability and does not undergo fibrillation over a long time. In the artificial lawn, flat filament yarns, which are produced by uniaxially stretching a crystalline plastic material to give a crystal orientation degree of 0.75-0.90, are used as piles (3) to be implanted in a base fabric (2).
Description
Technical field
The present invention relates to a kind of artificial lawn having careless silk (pile) in the implantation of base cloth, more specifically, relate to a kind of technology improving the durability of careless silk.
Background technology
For be filled with the artificial lawn of packing material between careless silk for, as the artificial lawn ground (surface) with the characteristic close with natural lawn, be widely used in the various athletic competition facilities such as football field, Rugby field, baseball field.In addition, also effectively utilize the feature of its weather proof type recently, the situation used as the sports ground of school also increases year by year, and the utilization rate of artificial lawn improves gradually.
As the one in this artificial lawn, be known to the so-called artificial lawn that grows grass being set as by careless filament length degree more growing compared with artificial lawn in the past.For an artificial lawn that grows grass, filled rubber chip between longer careless silk, and the exposed length adding an end that grows grass, can reproduce the characteristic close with natural lawn thus, thus command a fine reputation.
But, on the surface of artificial lawn, due to by shoes imposed loads such as rubber-sole sport footwear and even various match nail footwear, therefore, along with the raising of utilization rate, grass silk easily because rubbing wearing and tearing, the repeatedly load-carrying and distortion that cause or fracture with various sole, just because of this, the end generation fibrillation (microfibre) of careless silk.
Therefore, for artificial lawn in the past with for careless silk, in order to prevent above-mentioned fibrillation, preferably adopt polypropylene, the high density polyethylene (HDPE) of excelling in abrasion resistance.Such as with reference to patent document 1,2.
But, growing grass in an artificial lawn, construct different from the destruction of note sand artificial lawn microfibre in the past, the careless silk given prominence to is trampled longlyer repeatedly, be subject to twisting stress, thus produce with bending, the flexing (buckling) of careless silk for destroying the breaking of starting point, crackle, because of this break, crackle and cause fibrillation.
In addition, particularly in the artificial lawn that utilization rate is higher, due to the development of fibrillation, cause lawn end broken, thus not only worry its impact on playability (playability), broken careless silk also can be caused to make people unhappy because adhering electrostatically on clothes, footwear.In addition, because the careless silk of fragmentation is taken out of outside place, therefore can pollute around place, thus, for manager one side, also can have problems.
Further, the careless silk of artificial lawn is in the past implemented the deep processing of 5 times ~ about 7 times usually, thus on the one hand, hot strength is improved, and on the other hand, durability reduces, and is difficult to prevent above-mentioned fibrillation.
Patent document 1: Japanese Unexamined Patent Publication 6-184811 publication
Patent document 2: Japanese Unexamined Patent Publication 11-269811 publication
Summary of the invention
Therefore, the object of the present invention is to provide a kind of artificial lawn, it can not fibrillation in long-term, has stable durability.
To achieve these goals, the present invention possesses several features as follows.Namely, a kind of artificial lawn, it is implanted at base cloth careless silk, it is characterized in that, above-mentioned careless silk is made up of flat filament, this flat filament processes by carrying out uniaxial extension to crystalline plastic, and crystalline orientation degree is set to 0.75 ~ 0.90 (being more preferably 0.75 ~ 0.85).
As the mode be more preferably, the length of the short-axis direction in the cross section of above-mentioned careless silk is set to H and the length of long axis direction is set to W, the flat ratio (W/H) of above-mentioned careless silk is 3.0 ~ 7.0.In addition, in the present invention, " cross section " refers to the cross section orthogonal with the length direction of careless silk.
As the mode be more preferably, the length H of the short-axis direction in the cross section of above-mentioned careless silk is 180 μm ~ 350 μm.
In addition, as other mode, the tensile modulus of elasticity of above-mentioned careless silk is 150N/mm
2~ 350N/mm
2.
As the mode be more preferably, the straight-chain low density polyethylene (LDPE) that above-mentioned crystalline plastic is 0.900 ~ 0.940 by density is formed.
Accordingly, for by carrying out uniaxial extension for crystalline plastic and process and crystalline orientation degree being the flat filament of 0.75 ~ 0.90 (being more preferably 0.75 ~ 0.85), use it for careless silk, thus the flexibility of careless silk can be improved, can not fibrillation in long-term, stable durability can be realized.
In addition, when the length of the short-axis direction in the cross section by above-mentioned careless silk is set to H and the length of long axis direction is set to W, because the flat ratio (W/H) of above-mentioned careless silk is 3.0 ~ 7.0, thus become be difficult to wearing and tearing, its result, can prevent the development of fibrillation.
In addition, the length H due to the short-axis direction in the cross section of above-mentioned careless silk is 180 μm ~ 350 μm, thus the durability of careless silk becomes good.When length H is less than 180 μm, easily fibrillation occurring, therefore, is not preferred.On the contrary, when length H is greater than 350 μm, careless silk is thickening, and cost increases, and moreover, but also easily produce curved trace because of bending, result causes pliability, the appearance damage of artificial lawn, thus also not preferred.
In addition, because the tensile modulus of elasticity of above-mentioned careless silk is 150N/mm
2~ 350N/mm
2, thus the durability of careless silk becomes good.When tensile modulus of elasticity is less than 150N/mm
2time, elastic force dies down, and careless silk is easily broken, and processability is also deteriorated, thus is not preferred.On the contrary, when tensile modulus of elasticity is greater than 350N/mm
2time, thus easy bending, flexing, make the flexibility of artificial lawn impaired, therefore, also not preferred.
Accompanying drawing explanation
Fig. 1 is the sectional view of the artificial lawn schematically shown involved by an embodiment of the invention.
Detailed description of the invention
Next, with reference to accompanying drawing, embodiments of the present invention are described, but the present invention is not limited thereto.
As shown in Fig. 1 (a), this artificial lawn 1, by implanting careless silk 3 at predetermined intervals relative to the base cloth 2 being formed as sheet and forming, is coated with the priming paint agent (backing agent) 4 for preventing careless silk 3 from coming off in the rear side of base cloth 2.
Although base cloth 2 uses the flat fabric be such as made up of the thermoplastic resin such as polypropylene, polyethylene, other beyond also can using is weaved cotton cloth, and in the present invention, is not particularly limited the form of base cloth 2, material.
Grass silk 3 is made up of flat filament, this flat filament processes by carrying out uniaxial extension to crystalline plastic (also referred to as crystalline polymer), and crystalline orientation degree is set to 0.75 ~ 0.90 (being more preferably 0.75 ~ 0.85).
With reference to Fig. 1 (b), grass silk 3 is made up of flat filament, and be formed as: when the length of the short-axis direction in the cross section by careless silk 3 is set to H and the length of long axis direction is set to W, the flat ratio (W/H) of careless silk 3 is in the scope of 3.0 ~ 7.0.
That is, because flat ratio is 3.0 ~ 7.0, thus become be difficult to wearing and tearing, its result, can prevent the development of fibrillation.
As the mode be more preferably, the length H of the short-axis direction in the cross section of careless silk 3 is 180 μm ~ 350 μm (being more preferably 250 μm ~ 300 μm).That is, when length H is less than 180 μm, easily fibrillation occurring, is thus not preferred.
On the contrary, when length H is longer, careless silk is thickening, and cost increases, and moreover, but also easily produce curved trace because of bending, result causes pliability, the appearance damage of artificial lawn, thus also not preferred.
And then as preferred embodiment, the tensile modulus of elasticity of careless silk 3 is 150N/mm
2~ 350N/mm
2.That is, when tensile modulus of elasticity is less than 150N/mm
2time, elastic force dies down, and careless silk is easily broken, and processability is also deteriorated, thus is not preferred.
On the contrary, when tensile modulus of elasticity is more than 350N/mm
2time, rigidity increases, thus easy bending, flexing, make the flexibility of artificial lawn impaired, therefore, also not preferred.
As the material meeting above-mentioned each specification, crystalline plastic employing density of the present invention is the straight-chain low density polyethylene (LDPE) (L-LDPE) of 0.900 ~ 0.940.In addition, as long as meet the material of above-mentioned each condition, other crystalline plastic in addition can also be used.
In this embodiment, although careless silk 3 is implanted to base cloth 2 by the single filament of the flat filament of the fibrousness (dtex) by regulation and forms, but such as also can use the structure of many above-mentioned filaments being carried out to twisted, as long as meet above-mentioned each specification, its mode of occupation is not particularly limited.
In addition, after in the substrate 10 artificial lawn completed 1 being layed in regulation, between careless silk 3, the rubber scraps as packing material 5 is filled, in the present invention, about the structure of packing material 5 and substrate 10, be not particularly limited, can change arbitrarily according to specification.
Embodiment
Next, for specific embodiment of the present invention, compare together with comparative example, study.First, the careless silk that utilized following methods to make.
[manufacture of careless silk]
At the temperature of 180 DEG C, by straight-chain ldpe resin composition, (density is 0.926g/cm to the extruder of use φ 60mm
3, MFR is 0.9g/10min) and melting being extruded, in the tank of 30 DEG C, make its cooling curing.Next, utilize roll extension method to carry out uniaxial extension processing to it at the temperature of 90 DEG C ~ 100 DEG C, then, in the hot water tank of 90 DEG C ~ 100 DEG C, heat treatment without tension carried out to it, thus obtain fibrousness be about 1850 dtexs artificial lawn grass silk.
[manufacture of artificial lawn]
6 that make utilizing said method careless silk twisteds become a branch of and are formed as a blade of grass silk, use the tufting machine of the specification (gauge) of 5/16 on the flat fabric of polypropylene, implant the careless silk that careless silk height (the careless filament length degree from base cloth to end) is 60mm, then, in the rear side of Ji Bu as solid state component with 1100g/m
2coated weight coating 70%SBR latex, and under the high temperature of 105 DEG C, make it dry, thus obtain artificial lawn.
Next, carried out measuring and various evaluation to the careless silk made and artificial lawn according to following each method.
[mensuration of crystalline orientation degree]
The surface of the precursor of careless silk is set to vertical with the direction of illumination of X-ray at test portion platform, use the X-ray diffraction machine (model: D8-DISCOVER-μ HR-Hybrid) that Bruker-AXS company manufactures, X-ray irradiation under the following conditions, the half breadth of the intensity distribution obtained according to the peak value from obtained diffraction pattern and calculate crystalline orientation degree.
[condition determination]
X-ray source: CuK α line (many layer mirror specification)
Export: 50kV, 22mA
Detector: scintillation counter (scintillation counter)
[mensuration of tensile modulus of elasticity]
The precursor of careless silk is cut to the length of 50mm, the chuck spacing of 30mm is set at cupping machine, then, stretch till it is disrumpent feelings with the precursor of the draw speed of 100mm/min to careless silk, its tensile load-deformation curve (S-S curve) is measured, calculates tensile modulus of elasticity according to the tangent line gradient of elastic deformation area.
[evaluation of durability]
Artificial lawn is cut into
discoid, be accommodated in the bottom having round-ended cylinder container that diameter is identical, with the degree filled rubber chip making lawn end expose 20mm.The compression piece that utilization can be inserted along the inner peripheral surface of cylindrical vessel extrudes artificial lawn with the load of 700N.Be provided with at the end of compression piece that to be envisioned for sole and to have the concavo-convex hardness of clathrate be the polyurethane rubber of 60.
Under the state utilizing compression piece to extrude artificial lawn, cylindrical vessel is come and gone with the rotary speed of 25rpm, the angle of 15 ° and rotates, come and go as once with one, implement the long duration test of 100,000 times.After stating test on the implementation, randomly draw the careless silk of 10 artificial lawns, count the radical producing be full of cracks, if the radical producing be full of cracks is 0, be judged as ◎, if 1 ~ 3 are then judged as zero, if more than 4 are then judged as ×.
[evaluation of processability]
In the present embodiment, processability refers to the cut-out characteristic of the careless silk of artificial lawn.Use tufting machine after artificial lawn implants careless silk, to make the mode that careless filament length degree is 60mm, careless silk is cut, it is made highly to become even, and, ring-type will do not produced and remain (ル ー プ residual り, residualloops) etc. undesirable condition be evaluated as zero, by found being evaluated as of undesirable condition ×.
[evaluation of appearance characteristics]
By 10 entrants, each artificial lawn and natural lawn are observed, if more than 7 are felt that size shape and texture, appearance looks elegant degree are peer-level, be evaluated as zero, if less than 6 acquisitions are as above felt, be evaluated as ×.
[overall merit]
Finally, the overall merit of durability, processability and aesthetic appearance is carried out.Evaluation method is as follows: in above-mentioned every evaluation, be all zero or ◎ time then overall merit be "○", if having one for ×, overall merit is "×".
" embodiment 1 "
[crystalline orientation degree] 0.81
[minor axis length H] 0.235mm
[long axis length W] 1.16mm
[flat ratio W/H] 4.936
[tensile modulus of elasticity] 190N/mm
2
[durability] ◎
[processability] zero
[outward appearance] zero
[overall merit] zero
" embodiment 2 "
[crystalline orientation degree] 0.75
[minor axis length H] 0.196mm
[long axis length W] 1.37mm
[flat ratio W/H] 6.990
[tensile modulus of elasticity] 206N/mm
2
[durability] ◎
[processability] zero
[outward appearance] zero
[overall merit] zero
" embodiment 3 "
[crystalline orientation degree] 0.90
[minor axis length H] 0.243mm
[long axis length W] 1.12mm
[flat ratio W/H] 4.609
[tensile modulus of elasticity] 273N/mm
2
[durability] zero
[processability] zero
[outward appearance] zero
[overall merit] zero
" embodiment 4 "
[crystalline orientation degree] 0.85
[minor axis length H] 0.271mm
[long axis length W] 0.91mm
[flat ratio W/H] 3.358
[tensile modulus of elasticity] 301N/mm
2
[durability] ◎
[processability] zero
[outward appearance] zero
[overall merit] zero
" comparative example 1 "
[crystalline orientation degree] 0.92
[minor axis length H] 0.237mm
[long axis length W] 1.11mm
[flat ratio W/H] 4.684
[tensile modulus of elasticity] 357N/mm
2
[durability] ×
[processability] zero
[outward appearance] zero
[overall merit] ×
" comparative example 2 "
[crystalline orientation degree] 0.91
[minor axis length H] 0.150mm
[long axis length W] 1.80mm
[flat ratio W/H] 12.000
[tensile modulus of elasticity] 348N/mm
2
[durability] ×
[processability] zero
[outward appearance] zero
[overall merit] ×
" comparative example 3 "
[crystalline orientation degree] 0.72
[minor axis length H] 0.220mm
[long axis length W] 1.12mm
[flat ratio W/H] 5.091
[tensile modulus of elasticity] 195N/mm
2
[durability] zero
[processability] ×
[outward appearance] zero
[overall merit] ×
The summary carried out embodiment 1 ~ 4 and comparative example 1 ~ 3 has been shown in table 1.
[table 1]
Above, according to embodiment and comparative example, obtain following opinion.That is,
By suppressing crystalline orientation degree, make flexibility sufficient, for flexing, distortion are comparatively effective repeatedly.
If crystalline orientation degree diminishes, then produce viscosity because of fillibility, thus bad stability.
If minor axis length (thickness) increases, then cutting edge becomes and is difficult to enter, and thus cuts bad stability.
Description of reference numerals
1 ... artificial lawn; 2 ... Ji Bu; 3 ... grass silk; 4 ... priming paint agent; 5 ... packing material; 10 ... substrate.
Claims (6)
1. an artificial lawn, it is implanted at base cloth careless silk, it is characterized in that,
Described careless silk is made up of flat filament, and this flat filament is by carrying out uniaxial extension and process and crystalline orientation degree being set to 0.75 ~ 0.90 to crystalline plastic.
2. artificial lawn according to claim 1, is characterized in that,
The crystalline orientation degree of described careless silk is set to 0.75 ~ 0.85.
3. artificial lawn according to claim 2, is characterized in that,
The length of the short-axis direction in the cross section of described careless silk is set to H, and the length of the long axis direction in the cross section of described careless silk is set to W, the flat ratio (W/H) of described careless silk is 3.0 ~ 7.0.
4. artificial lawn according to claim 3, is characterized in that,
The length H of the short-axis direction in the cross section of described careless silk is 180 μm ~ 350 μm.
5. the artificial lawn according to any one of Claims 1 to 4, is characterized in that,
The tensile modulus of elasticity of described careless silk is 150N/mm
2~ 350N/mm
2.
6. the artificial lawn according to any one of Claims 1 to 5, is characterized in that,
The straight-chain low density polyethylene (LDPE) (L-LDPE) that described crystalline plastic is 0.900 ~ 0.940 by density is formed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-148292 | 2012-07-02 | ||
| JP2012148292A JP5794737B2 (en) | 2012-07-02 | 2012-07-02 | Artificial grass |
| PCT/JP2013/002225 WO2014006798A1 (en) | 2012-07-02 | 2013-04-01 | Artificial lawn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104411886A true CN104411886A (en) | 2015-03-11 |
| CN104411886B CN104411886B (en) | 2016-09-21 |
Family
ID=49881576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380034756.1A Expired - Fee Related CN104411886B (en) | 2012-07-02 | 2013-04-01 | Artificial lawn |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20150125633A1 (en) |
| EP (1) | EP2886715A4 (en) |
| JP (1) | JP5794737B2 (en) |
| CN (1) | CN104411886B (en) |
| WO (1) | WO2014006798A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642401A (en) * | 2016-07-27 | 2019-04-16 | 梅洛斯有限公司 | Artificial turf filler with the natural fiber being embedded in vulcanization part |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016205048A (en) * | 2015-04-27 | 2016-12-08 | 住友ゴム工業株式会社 | Artificial lawn |
| EP3235930A1 (en) * | 2016-04-18 | 2017-10-25 | Polytex Sportbeläge Produktions-GmbH | Artificial turf fiber with lldpe and ldpe |
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|---|---|---|---|---|
| JPH08105010A (en) * | 1994-10-07 | 1996-04-23 | Toray Ind Inc | Sanded artificial lawn |
| CN1508359A (en) * | 2002-07-01 | 2004-06-30 | �ڿ�������¡��˾ | Artificial fiber as weel as artificial lawn for sports field provded with such fiber |
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| JP2010265593A (en) * | 2009-05-12 | 2010-11-25 | Hagihara Industries Inc | Artificial lawn with low temperature-rise property |
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| JP2992221B2 (en) * | 1995-06-07 | 1999-12-20 | ダイヤテックス株式会社 | Artificial grass |
| JP3659379B2 (en) * | 1997-11-28 | 2005-06-15 | 東洋紡績株式会社 | Artificial turf yarn and artificial turf using the same |
| JP3342661B2 (en) * | 1998-03-23 | 2002-11-11 | ダイヤテックス株式会社 | Artificial grass |
| JP2000027113A (en) * | 1998-07-15 | 2000-01-25 | Toray Ind Inc | Artificial lawn, athletic sports field, and artificial lawn skiing field |
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| EP1672020A1 (en) * | 2004-12-20 | 2006-06-21 | Innovene Manufacturing Belgium NV | Polyethylene composition for artificial turf |
| JP2007016367A (en) * | 2005-07-11 | 2007-01-25 | Hagihara Industries Inc | Artificial grass pile thread and artificial lawn using the same |
| JP2007031876A (en) * | 2005-07-26 | 2007-02-08 | Tmt Machinery Inc | Apparatus for producing spun bonded nonwoven fabric and method for producing the same |
| JP2007162144A (en) * | 2005-12-09 | 2007-06-28 | Toray Ind Inc | Method for producing carbon fiber bundle |
| RU2433047C2 (en) * | 2006-01-19 | 2011-11-10 | Базелль Полиолефине Гмбх | Polyethylene composition for products from stretched belt |
| JP4623750B2 (en) * | 2008-05-13 | 2011-02-02 | 住友ゴム工業株式会社 | Artificial turf structure using an artificial turf filling granule and the artificial turf filling granule |
| JP4623749B2 (en) * | 2008-05-13 | 2011-02-02 | 住友ゴム工業株式会社 | Artificial turf structure using an artificial turf filling granule and the artificial turf filling granule |
-
2012
- 2012-07-02 JP JP2012148292A patent/JP5794737B2/en active Active
-
2013
- 2013-04-01 EP EP13813564.5A patent/EP2886715A4/en not_active Withdrawn
- 2013-04-01 WO PCT/JP2013/002225 patent/WO2014006798A1/en active Application Filing
- 2013-04-01 CN CN201380034756.1A patent/CN104411886B/en not_active Expired - Fee Related
- 2013-04-01 US US14/407,270 patent/US20150125633A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08105010A (en) * | 1994-10-07 | 1996-04-23 | Toray Ind Inc | Sanded artificial lawn |
| CN1508359A (en) * | 2002-07-01 | 2004-06-30 | �ڿ�������¡��˾ | Artificial fiber as weel as artificial lawn for sports field provded with such fiber |
| CN101029419A (en) * | 2003-05-28 | 2007-09-05 | 兰克霍斯特茵德泰克股份有限公司 | Wire for artificial grass lawn, artificial grass lawn containing the wire and sports ground |
| CN101730772A (en) * | 2007-06-07 | 2010-06-09 | H.德索地毯制造公司 | The pedaline that is made of the fiber that comprises core and clad reaches by its chinampa of making |
| JP2010229578A (en) * | 2009-03-26 | 2010-10-14 | Toray Ind Inc | Polyacrylonitrile-based continuous carbon fiber bundle, and method for producing the same |
| JP2010265593A (en) * | 2009-05-12 | 2010-11-25 | Hagihara Industries Inc | Artificial lawn with low temperature-rise property |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109642401A (en) * | 2016-07-27 | 2019-04-16 | 梅洛斯有限公司 | Artificial turf filler with the natural fiber being embedded in vulcanization part |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2886715A1 (en) | 2015-06-24 |
| JP2014009538A (en) | 2014-01-20 |
| US20150125633A1 (en) | 2015-05-07 |
| WO2014006798A1 (en) | 2014-01-09 |
| EP2886715A4 (en) | 2016-03-09 |
| JP5794737B2 (en) | 2015-10-14 |
| CN104411886B (en) | 2016-09-21 |
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