美国戴维斯-标准

AgriculturalBlownFilm

农膜技术与设备AndyBarnesSalesManagerBlownFilmEuropeAgriculturalFilmTheterm‘agriculturalfilms’isusedtodescribethediverserangeofplasticfilmsthatareusedforagriculturalapplications.农膜是一个描述农业用塑料膜的广泛名称TheseincludeGreenhouseFilms,MulchFilms,Water/SoilProtectionFilms,FumigationFilms,SilobagsandSilageWrap.包括大棚膜，地膜，水土保持膜，熏蒸膜，袋膜和青草膜Thicknessrangesfrom10micronto300micron.厚度：10－300micronWidthsfromafewhundredmillimetrestoover20mwidesheet.

宽度从几百微米到20多米AgriculturalFilmsSilobags袋膜Greenhouse大棚膜TypicalAgriculturalFilmFumigationFilms熏蒸膜LowtunnelFilms低盖膜AgriculturalfilmsMulchfilms地膜Silagewrap青储膜AgriculturalFilmsAgfilmcompeteswithmanyothermaterialsincludingcloth,straw,Sacking,non-wovencloth,fabric,fibreglass,glass,metal,organicmulch,andwoodchips农膜涵盖很多其他材料，包括布，草芥，袋，无纺布，纤维，玻纤，玻璃，金属，有机地膜和木片.TYPESOFAGRICULTURALFILMAPPLICATIONS

农膜应用类型Agriculturalfilmvariesinthickness,dependinguponitsapplication.根据不同应用，农膜厚度有很大不同Gaugesofagriculturalfilmrangefrom15micronsto300microns.厚度从15到300微米Thickerfilmsareappliedwherelongerlifefilmsareimportantandharshweatherandwindconditionsareafactor.厚膜可应用到长时间使用的地方，天气和风的调件是考虑因素Thickergaugeagriculturalfilmsincludewater/soilconservationfilmandgreenhousefilm.厚膜包括水土保持膜和大棚膜Othertemporary,short-livedagriculturalfilmsincludemulchfilm,fumigationfilm,andcropstorageorsilofilmwhereathinnergaugefilmissufficient.短时短寿的农膜包括地膜，熏蒸膜和袋膜AgriculturalFilmSomeoftheadvantagesofpolyethyleneagriculturalfilmcomparedtocompetingmaterialsarePE农膜和其他材料比较有如下优点Increasedcropyield促进作物产量Environmentalstability环境稳定Lowermaterialcosts

材料成本低Lowerinstallationcostscomparedtomanyothermethods

安装成本低Lowermaintenancecosts

维护成本低Loweroperatingcosts

操作成本低Increasedprofitability利润提高AgriculturalFilmThefilmsusedforthesearebasedonLDPE/LLDPE,butincreasinglyEVAfilmisgainingmarketshare.用于这些膜的材料主要为LDPE/LLDPE,EVA膜开始增长EVAcopolymersofferbenefitsintermsofmechanical,opticalandthermalpropertiesoverLDPE.

EVA共聚物与LDPE比较可改善机械性能，光学和热性能VariousadditivesareUsedtoobtaincertaincharacteristicsandcertainpropertiesoftheFilm通过加入各种添加剂，可获取特定的特性和性能TypicalAgriculturalFilmSpecifications

典型农膜规格ThemainresinsusedforagriculturalfilmsareLDPEandEVACopolymerswhichcanbeusedinblendswithLLDPE.用于农膜的主要树脂是LDPE和与LLDPE混合的EVA共聚物Bycarefulchoiceofresins,andadditives,Youcanexpecttoachievesomeorallofthefollowingbenefits通话谨慎的选取树脂和添加剂，可取得如下全部或部分的特点Higheryieldpersquaremetre每屏幕的高产Precocity(earlyripening)早熟Superiorcropquality高质量的谷物Producingoutofseason季后生长Watermanagement水的管理FilmProperties

膜的性能

TensileProperties拉伸性能Thestrengthofafilmcanbeexpressedinmanyways.Thecombinationofhightensilestrengthandhighelongationatbreakindicatethatthefilmcanwithstandstrongforceswithoutbreaking.膜的拉伸强度有很多表述方法。高的拉伸强度和高断裂伸长率的结合可表明该膜可经受强力的拉伸而没有断裂Creep蠕变Lowcreepisahighlydesiredpropertyforgreenhousefilmsandindicateshowmuchforceisretainedwhenthefilmisunderhighstress.低蠕变是大棚膜所希望的性能，表面膜在高应力下可承受的力FilmProperties

膜的性能Clarity

透明度Films,whichremainhighlytransparent,arenecessaryfortheagriculturalindustry.EVAcompoundstypicallyproducefilmsthattransmitupto20%morelightthanconventionalpolyethylenefilms.对于农业来说，膜保持高的透明度很重要。EVA混合物可比传统PE膜提高透光率20％以上MulchFilm

地膜Mulchfilmisalsoavailableinothercolourssuchassilverandwhite.地膜也可有其他颜色，如银和白Whitemulchfilmistypicallyusedforreflectancetokeepseedlingsfromgettingtoohot.白色地膜可用于反射以保持秧苗的温度

Silveragriculturalfilmisalsousedforreflectanceandsoiltemperaturereduction.银色膜也用于反射保持土壤的温度的降低CropStorage&SiloFilm

作物储存和仓储膜

Polyethylenefilmsareextensivelyusedinthismarketsegmentformanyapplicationssuchas:PE膜被广泛用于这个领域的多种应用Temporarysilos

临时仓储Linersforgrainstoragefacilities

谷物仓储设备的内衬Groundsheets

地衬Flexiblebags

软袋Flexiblesilagebagsspeedupfermentationofgreenfeedintosilage

软袋可加速绿色饲料在仓储中的发哮CropStorage&SiloFilm

谷物存储和仓储膜Flexiblebagshelpkeeptheproductfreshwhilereducingadditionalstoragespace.软袋可保持产品的新鲜，并减少额外的储存空间Polyethylenefilmsarealsousedashaybalecoversandcropdryingcoversinbadweather.PE膜也用于捆包的干草的覆盖，并在不好天气时的干燥谷物的覆盖SomecropstorageandsilofilmscontainUVinhibitorstoextendfilmlife,andareheavydutyandreusable.

一些谷物储存和仓储膜可含有抗UV添加剂以延长膜的寿命，并可耐重和再次使用AgriculturalFilmsAgriculturalfilmmachineryneeds农膜机械的需求5Mand7Mwidestationarynips5－7米的固定卡辊Gussetedandfoldedfilms插板和折叠的膜HighOutputscrewsgoodmixingandIBC高产，良好混合和内冷FoldingdevicetoproduceU-fold;C-fold;doubleC-foldandotherpossibilities可进行U，C,双C和其他可能折叠的装置Specialwindersforsmallrollsandautomatictransfer用于小卷和自动换卷的特殊的收卷机APPLICATIONSUMMARY

应用总结

MulchFilm:

地膜30–90micron,1000–1200mmWideClear/Pigmented,无色/颜色GreenhouseFilm

大棚膜100–250micron,4–18mWideClearVariousadditivesutilised无色各种添加剂FumigationFilms

熏蒸膜20–40micron,4–12mWideClearfilm无色SilageWrap储存膜

25–150microns700–1600mmPigmented(white/whiteblack/whiteblack/black)颜色（白/白黑/白黑/黑）Water/SoilProtection

水土保持100–300microns+“Geomembrane”土工膜4–16mClear/pigmented无色/颜色TypicalLineConfiguration

典型生产线配置1x150mmand2x115mmExtruders挤出机3x4ComponentBlending组分ControlSystem控制1.2m-2m3LayerDie三层模头DualLipAirRing双口模气环IBCCoolingCoils冷却弯管Cage/BubbleStabilization泡笼/膜泡稳定CollapsingFrames人字板GussetBoards差板3.5m-4.5mPrimaryNipRoll主卡辊25-30mTower塔架WidthMeasurementSystem宽度测量系统CoolingRollStation冷却辊站Foldingstation折叠站SecondaryNipAssembly第二卡辊装置SlitterStation分切站AutomatedWinder自动收卷机RollHandlingequipment卷处理设备AgFilm

ProductStructures

农膜的结构Monolayer单层Limitedflexibilityinfilmproperties农膜的性能灵活性有限Cannotmeetrequirementsformanyoftoday'sapplications不能满足当今很多应用要求Co-extrusion共挤Allowsselectivityofresinsandblendstoachievedown-gaugingandtailoredfilmproperties可对树脂和混合物有多种选择，以取得薄的和特制的性能Allowsprocessortocontrolpropertiesofeachlayertodevelopaproductthatmeetsawiderangeofspecificrequirements可控制单层性能，开发各种特定要求的产品Improveseconomicsofproductionbyreducingtheamountofadditivesrequired减少添加剂的数量提高生产经济性Davis-StandardStrengths

戴维斯-标准的优势Extrusion+ScrewTechnology挤出＋螺杆技术DieTechnology(Inhousemanufacturingcapabilities)模头技术（自己加工的能力）AirRing/GaugeControl(havesuppliedAPCsystemto1.7Mdiameter)气环/厚度控制（可提供自动膜厚控制系统，1.7米直径）IBCSystem 内冷系统LayflatControl 折径控制CollapsingSystems人字板系统LineIntegration 生产线总成Winders 收卷机AfterSalesSupport售后服务支持RawMaterials-BaseResins

原材料-基本树脂PrimaryComponents:LDPEandEVAcopolymers主要组分：VAContentandviscosityselectiondependentonapplicationVA的含量和粘度可根据应用选择MinorComponents:LLDPE,mLLDPE微量组分：Usedtoimprovephysicalpropertiesandallowfordown-gauging,ultimatelyimprovesclarity可提高物料性能和减少厚度，提高透明度RawMaterials–Additives

原材料-添加剂Additives:Usedtotailorfilmproperties添加剂:采用特定膜的性能UVresistance抗紫外性能Anti-block–EspeciallyforhighVAcontentfilms抗材料结块-特别是高VA含量膜Anti-fog(oranti-drip)-Migratingadditivespreventaccumulationofcondensateonfilmsurface抗雾（抗滴）迁移添加剂可防止膜表面结雾的集结Anti-microbial抗微生物Anti-static-Preventsaccumulationofdustwhichcaninfluencelighttransmission抗静电-防止沙尘的聚集从而影响透光性Optical-Variousadditivescanincreaseordecreaseopacityandandphoto-selectivitybehaviorasdesired光学性能-不同的添加剂可增加或减少透明性和期望的光选择IRradiationinhibitor–PreventinglossoflongwaveIRwaveswillhelpheatretention(thermalinsulation)红外辐射控制－防止长波红外波的损失，其可保持热量（隔热）AgFilm

PhysicalProperties

农膜物理性能EffectofincreasingVAcontentonfilmproperties增加VA含量对农膜性能的影响Stiffness 挺度Toughness 硬度Heatretention 热保持Clarity 透明度Creep 蠕变ExtrusionConsiderations

挤出考虑Extrudersizingforhighoutputapplications高产应用的挤出机的尺寸Homogenization均匀度Achievinguniformityofchallengingblends对不容易塑化均匀的混合物取得均匀Coolingrequirements冷却需求Maintainingmelttemperaturecontrol保持融体温度控制Homogenization

塑化均匀Homogenizationiscriticalforacceptableaestheticsandreliableperformanceofagriculturalfilms均匀性对于表观和可靠的性能是非常关键Uniformityofpolymerblendsandmultiplemasterbatchadditives聚合物混合物和多母料添加剂的均匀性Uniformityoftemperatureandviscosityofextrudate温度和挤出粘度的均匀性

DispersiveandDistributivemixingarerequiredinthesinglescrewextruder单螺杆挤出机分散混合ScrewDesign

螺杆设计Allofourextrudersemploybarrierscrewswhichofferexcellentversatility,allowingtheextrusionofawiderangeofpolymers

所有挤出机采用屏蔽式螺杆可提供多种物料的加工Ourscrewdesignsarewellproveninthefieldandconsistentlyhaveshowntheirabilitytoprocesshighqualityfilmathighthroughputrates.我们的螺杆证明可进行在高速产量下优质薄膜的生产Mixing

混合DISTRIBUTIVE分布Increaseofinterfacialareabetweentwomisciblecomponents在两易混合的组分直间界面的增加Splittingandrecombinationofflowstreams流体的分离和结合DISPERSIVE分散Shearinducedparticlesizereductionofimmisciblecomponents.MixingandQuality

混合和质量Micro-graphs100X0.15MIHDPE+5%CBMBPoormixingcaneffect:很差的混合可影响Physicalproperties(tensilestrength,elongation,UV,anti-fog)物理性能（拉伸强度，伸长率，UV,和抗雾）ProductUniformity(consistentguage,layerdistribution)产品均匀性（均匀的厚度，层的分布）Aesthetics(opticalproperties,filmappearance)外观（光学性能，表面）Excellent优秀PoorDispersive差的分散PoorDispersive&Distributive差的分散和分布PoorDistributive差的分布HelicalUnionCarbideMixingSection(UCC-T)

螺旋碳化物混合段(UCC-T)HelicalUnionCarbideMixing

FlowPattern

流道方式ChannelCrossSection

通道截面StreamlinesShown流道线所示100XHDPE+5%CBMBPineappleMixingSection

波萝混合段Multi-flightedwithcross-cutstocreaterhomboids有截面切割以产生菱型的多螺棱Allowsfordisruption/re-orientationofflowtosignificantlyimprovethedistributivemixingcapacityofascrew可分布/再进行流体拉伸，极大提高螺杆均匀分布的能力PineappleMixingSection

波萝混合段StreamlinesShowingDistributiveMixing所示分布混合流体100XHDPE+5%CBMBStaticMixers

静态混Fixed,in-linemixerlocatedinmeltpipingpriortodie固定，线内混合是在进入模头前融体管中Causesreorientationofflowstreamsforimproveduniformity可产生流体的再取向以提高均匀性Temperatureuniformity:温度均匀性eliminatestemperature(andsubsequentviscosity)gradientsinthemeltstreamBlenduniformity:混合物均匀性ensurescompletelyuniformdistributionofmasterbatchesMeltTemperature

融体温度Influencedprimarilybytwofactors:两个主要影响因素Conduction传导=functionof(residencetime,barrelset-points,limitationsofheating/coolingunits...)功能（停留时间，螺筒设定点，加热冷却单元的限制）Conductionhaslessinfluenceasextruderdiameterincreases随着挤出机直径的增加，传动的影响减少ViscousEnergyDissipation(VED)粘度能量分散=functionof(viscosity,shearrate...)功能（粘度，剪切速率）VED(orshearheat)increasesaspolymerviscosityincreases随聚合物粘度的增加粘度能量分散性增大AgFilm

CoolingRequirements

农膜冷却要求ThreeCriticalFactors三个重要因素Largeextrudersarerequired–tempcontrolisdifficult大挤出机要求-温度控制困难Limitedinfluenceofconductionbecauseofincreasedratioofpolymervolumetobarrelsurfacearea聚合物体积和螺筒表面区域比例的增加，限制了传导的影响Highviscosity(lowMI)polymers高粘度（低MI)聚合物Generateshearheatduringextrusion产生剪切热量Lowmelttemperatureisrequired要求低熔融温度Tomaintainintegrityoftemperaturesensitiveadditives保持温敏添加剂的一体化Tomaintainbubblestability保持膜泡稳定Lowshearscrewdesignandadequateextrudercoolingcapacityarecriticaltocontrolmelttemperature 低剪切螺杆设计和足够的挤出机冷却能力是控制融温的关键ScrewDesignOptimization

AgFilmApplications

农膜应用中的优化螺杆设计Designobjectives:设计目标Excellenttemperaturecontrolbalancedwithsufficientdispersiveanddistributivemixing有足够分散和分布的混合平衡的优异温控Provendesignconcept:证明了的设计理念Davis-StandardBarrierTypeIIwithdualmixingsections戴维斯-标准屏蔽式II性螺杆有双混合区Mixer1:HelicalMaddockMixer混合1:螺旋式混合器Mixer2:Pineapple(Multi-flighted)Mixer混合2：波萝混合器ExpectedPerformance

期望性能ExtruderCoolingOptimization

AgFilmApplications

农膜挤出机冷却优化Designobjectives:设计目标Excellenttemperaturecontrolbalancedwithmaintenanceandcostadvantagesofaircooling风冷的成本优势和维修优势的组合而成的优异的温控Provendesignconcept:已验证的设计理念Highefficiencyaircoolingsystem:MACExtruders高效风冷系统：MAC挤出机MAC

ExtruderMACSeries

ofAirCooledExtruders

风冷MAC系列挤出机AirCooledUsingaSingleSuctionBlower采用一个排风机的风冷AirControlDampersforeachZone每个区的风控阀MinimalMaintenanceduetoSimplerDesign简单的设计可最大程度减少维修InherentEnhancedPlantAirManagement提高工厂统一气体排放RuggedGearboxwithHardenedGears坚固的齿轮箱HighOutputDSBBarrierScrews高产量屏蔽式螺杆MAC

ExtruderAirFlowConceptFinnedHeaters

鱼翅型加热器Theheatersaresecuredwithmultiplecapscrewsasshowninthesetwophotos.AirPassesdownwardoverthefinsofthetwohalvesoftheheatersandisdirectedintotheflexibleductabovethecontroldampers.ValveActuators

开启阀门DeepFinnedCastAluminumHeatersCommerciallyAvailableAirCylinders2M3-LayerAgriculturalFilmDie

2米三层农膜模头PROCESSREQUIREMENTS

加工要求

Agriculturalfilmsrequiretherightadditivecombinationsforthevariousdemandingfilmapplications

农膜要求采用正确的添加剂来满足不同薄膜应用的要求ThecompoundsaremainlybasedonLDPEorvinylacetate(4to19%VA)polymersandsomecontainUV(ultraviolet)stabilisers.混合料主要由LDPE或VA含量在4-19的丙稀酸类聚合物为基础，加入含有UV的稳定剂EVAcopolymersnotonlyhaveoutstandingmechanicalproperties,butalsoexcellentopticalpropertiesandverygoodlongIR(infrared)radiationretention(thermicity).EVA不紧有优异的机械性能，并且有优异的光学性能和保持长波辐射的性能PROCESSREQUIREMENTS

加工要求Bubblestabilityand“drawdownability”areoftenconsideredasthemostimportantprocessparameters.

膜泡稳定和“下垂拉能力”是加工考虑的主要因素Greenhousefilms,becauseoftheirenormouswidths,needverygoodbubblestabilityandthereforelowmeltindexgradesarechosen.

由于巨大的宽度，大棚膜需要非常好的膜泡稳定性，所有要选择低熔融指数材料Mulchingfilmontheotherhandneedsgood“drawdownability”,sohighermeltindicesarechosen.

地膜需要下垂拉性能，所以要选择高熔融指数的材料PROCESSREQUIREMENTS

加工要求ToachievegoodmixingoftheadditivesandformoreconsistentoutputwithEVAcopolymers,asmoothboreextruderratherthenagroovedfeedextruderisrecommended.为了取得添加剂的良好混合和EVA共聚物的恒定产量，推荐使用光壁挤出机而不是螺纹进料挤出机

Formaximumoutputandbestfilmquality,theuseofchilledairtotheairringandtheinternalbubblecoolingwhereusedishighlyrecommended.为了达到最大产量和最好的质量，推荐采用冷却风环和内冷系统PROCESSREQUIREMENTS

加工要求Becauseofthetackynatureofmanyagriculturalfilms(highVAEVA’sandLLDPE’s)andtherequirementforgoodopticalproperties,thechoiceofbubblecageandcollapsingassemblyiscriticaltoachievinghighqualityfilmconsistently.

由于很多农膜（高VA含量的EVA和LLDPE)粘的特性并要求有良好的光学性能，膜泡架和人字板的选择对于得到稳定高质量薄膜是很重要的Thebiggestchallengeforanagriculturalfilmlineisthewinderassembly.农膜线最大的挑战是收卷机Inmanyapplicationstheshortrolllengths(<200m)arerequiredforeaseofhandling.

为了易于搬运，很多应用需要断的膜卷MAC®Extruders

MAC挤出机SpecificallydesignedfortheblownfilmprocessutilizingvariableleadbarrierscrewsandACfluxvectororDCdrives.

专门用于吹膜加工，采用屏蔽螺杆，交流矢量电机Air-coolingsystemforenergyefficient,uniform,lowmaintenance,leakfreecooling.

空气冷却系统可使能量效率均匀，低维修，无冷却泄漏Ambientairisdrawnthroughtheairintakeandovertheclosefittedfinnedheatersthatencasethebarrel.

室温空气由入口处进入，鱼翅型加热器紧套在螺筒上Thewarmedairisexhaustedthroughtherigidstructuralbase/plenum.热的空气由底座抽出2M3-LayerAgriculturalFilmDie

2米三层农膜模头Forproductsrequiringverylargelayflatwidths,wehaveexperienceinmanufacturinglargediameterdies.

DieDesign

模头设计Theengineeredshearratedesignisoptimizedtopromotehighshearratesandlowresidencetimes

优化的剪切率的设计，可优化提高剪切速率和少的停留时间Thisprovidesoptimumflowdistributionofeachlayerforprecisegaugecontrolandconsistentfilmquality.

可提供优化的每层精确膜厚控制的流道分布和恒定的质量AgriculturalFilmsBubbleWesJetAirRing

WestJet气环TheWesJet®duallipairringfeaturesadesignwhichprovidesaconvergingairflowpatternbetweenthebubbleandtheairring’sformingcone.

WestJet双唇气环的特性设计形成了在膜泡和气环风圈之间的聚集的空气的流动WesJetAirRing

WesJet气环SpecialShippingFixturesExportBox特殊发运固定出口葙Requiredforlargecomponents大部件的需要D-Saddressestheseissues戴维斯-标准公司注意到这些问题WesJet®AutoProAutoprofileAirRing

自动风环

EmploysthesameaerodynamicprincipalsofourstandardWesJetairringbutwithasegmentedairflowcontrolsystem.WesJet风环兼有上述的特性并有断面气流控制系统WesJet®AutoProAutoprofileAirRing

自动风环ThesoftwareandgaugingmeasurementissuppliedbyPlastControlandsupportedbyDavis-Standard

软件和测厚由PlastControl公司提供，戴维斯支持Becauseweintegrateahighperformanceairringwithsegmentedairflowcontroltechnologywecanachieveexcellentoverallgaugeuniformitywithoutsacrificingperformance.由于结合了高性能的风环和截面气流控制技术，我们能取得优秀的薄膜厚度均匀性而没有性能的牺牲OnlymanufacturertosupplyAPCaslargeas2Mindiameter.我们是在2米如此大的模头提供自动膜厚控制的唯一供应商AgriculturalFilms–UseofProfileControl

厚度控制Segmentedflowcontrolonlargediameterairrings–1500mmshown局部气流控制，风环1500mmWesJet®AutoProAutoProfileAirRing

自动厚度控制风环1.4mAutoProNewWinderforGusseted,HeavyFilm

收卷机Typicalturretwindersrequiremanualcutandtransfertoanewcorewhenheavyfilmsorgusseted,foldedfilmsarebeingwound.当厚膜或插板，或折叠的膜收卷时，典型的转塔收卷机需要手动切割和更换新卷芯，Highincidenceofinjuriesinthismode.发生受伤的频率很高Mostautomaticcuttingdevicesdonotcutfoldedfilms.Pneumaticknifesoften“stall”.大部分自动切割装置不切折叠膜，而安装气动刀Solution–Cross-cutrotaryshearknifesystemdrivenbyservomotor.解决方案－转动切刀剪切系统，由饲服电机驱动Successfulon8foldsof8milfilm.在8折的薄膜取得成功HeavyFilmCrosscutTransfer

厚膜切割Cross-CutKnifeTapeonnewcoreCross-cutKnifedetail

AgriculturalFilms

农膜

Smalldiameterrollwinderwithautocutthrough8-foldsoffilmeach6-8milthick.每层6－8mil厚的8折的膜自动切割，小直径卷收卷机Shafted(auto-cut)andshaftless(manualcut).有轴（自动切割）和无轴（手动切割）3-LAgFilmLine

三层农膜线

D-Shassuppliedanewstateoftheartthree-layeragriculturefilmlinetoChinawithauto-profilecontroltoChinatoproduceanewstandardofagriculturefilmfortheChinesemarket.戴维斯提供有自动厚度控制的三层农膜生产线Thelineisabletoproducefilmsupto12mincircumferenceand150micronsthickatratesupto1650kg/hwhilecontrollingthethicknessprofiletotolerancesaslowas+/-3%.

可生产12米周长150微米厚的农膜，产量1650kg/h,厚度公差为＋/－3％BubbleStabilizingCage

稳泡笼Gusseting&Collapsing

插板和人字板Gusseting&Collapsing

差板和人字板Gusseting&Collapsing

插板和人字板CarbonFiberRollsforNoScratches3-LAgFilmLineAgriculturalFilms

Winder

收卷机AgriculturalFilms

农膜

Smalldiameterrollwinderwithautocutthrough8-foldsoffilmeach6-8milthick.小直径收卷机Shaftedandshaftlessauto-cut.有轴和自动无轴KnifeAgriculturalFilms

Winder

收卷机TYPESOFAGRICULTURALFILMSANDTHEIRAPPLICATIONS

农膜类型和应用Thewidthofagriculturalfilmdependsuponitsapplicationandvariesgreatly.Atypicalrangeofwidthforagriculturalfilmisfrom600mmuptoapproximately12mwide.农膜宽度取决于应用而有所不同。一般在600mm到12m

Mulchfilmvariesinlength,butistypicallysoldin6,7.5,15and30meterlengths.地膜一般是Irrigationtubingisavailableinlengthsupto400mlong.灌溉管线400m长AgriculturalFilm

农膜Theprimereasonsforusingagriculturalfilmsaretoachieveearliercrops,biggerharvestsandgreatercropyieldperunitarea,hencegreaterprofitsforthefarmer.使用农膜可取得高产，早熟和高产，而增加利润Somefilmsaredesignedtoretainheat,otherstoreflectheat.有的膜设计为报持热量，有的为反射热量Somerequirehighlighttransmissionothersrequiretotalopacity.有的需要透光，其他需要不透光Thus,itisimpossibleforonemachinetomeetallthemarketrequirementswithinthismarketsegment.在一台设备上不可能满足市场所有要求GreenhouseFilmMarket

大棚膜市场Greenhousefilmistypically15mwideandcanbeproducedincustomlengthsaslongas1,200m.一般15m宽，1200m长Fordifferentperformancespecification