美國戴維斯-標(biāo)準(zhǔn)

AgriculturalBlownFilm

農(nóng)膜技術(shù)與設(shè)備AndyBarnesSalesManagerBlownFilmEuropeAgriculturalFilmTheterm‘a(chǎn)griculturalfilms’isusedtodescribethediverserangeofplasticfilmsthatareusedforagriculturalapplications.農(nóng)膜是一個(gè)描述農(nóng)業(yè)用塑料膜的廣泛名稱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.

寬度從幾百微米到20多米AgriculturalFilmsSilobags袋膜Greenhouse大棚膜TypicalAgriculturalFilmFumigationFilms熏蒸膜LowtunnelFilms低蓋膜AgriculturalfilmsMulchfilms地膜Silagewrap青儲(chǔ)膜AgriculturalFilmsAgfilmcompeteswithmanyothermaterialsincludingcloth,straw,Sacking,non-wovencloth,fabric,fibreglass,glass,metal,organicmulch,andwoodchips農(nóng)膜涵蓋很多其他材料，包括布，草芥，袋，無紡布，纖維，玻纖，玻璃，金屬，有機(jī)地膜和木片.TYPESOFAGRICULTURALFILMAPPLICATIONS

農(nóng)膜應(yīng)用類型Agriculturalfilmvariesinthickness,dependinguponitsapplication.根據(jù)不同應(yīng)用，農(nóng)膜厚度有很大不同Gaugesofagriculturalfilmrangefrom15micronsto300microns.厚度從15到300微米Thickerfilmsareappliedwherelongerlifefilmsareimportantandharshweatherandwindconditionsareafactor.厚膜可應(yīng)用到長時(shí)間使用的地方，天氣和風(fēng)的調(diào)件是考慮因素Thickergaugeagriculturalfilmsincludewater/soilconservationfilmandgreenhousefilm.厚膜包括水土保持膜和大棚膜Othertemporary,short-livedagriculturalfilmsincludemulchfilm,fumigationfilm,andcropstorageorsilofilmwhereathinnergaugefilmissufficient.短時(shí)短壽的農(nóng)膜包括地膜，熏蒸膜和袋膜AgriculturalFilmSomeoftheadvantagesofpolyethyleneagriculturalfilmcomparedtocompetingmaterialsarePE農(nóng)膜和其他材料比較有如下優(yōu)點(diǎn)Increasedcropyield促進(jìn)作物產(chǎn)量Environmentalstability環(huán)境穩(wěn)定Lowermaterialcosts

材料成本低Lowerinstallationcostscomparedtomanyothermethods

安裝成本低Lowermaintenancecosts

維護(hù)成本低Loweroperatingcosts

操作成本低Increasedprofitability利潤提高AgriculturalFilmThefilmsusedforthesearebasedonLDPE/LLDPE,butincreasinglyEVAfilmisgainingmarketshare.用于這些膜的材料主要為LDPE/LLDPE,EVA膜開始增長EVAcopolymersofferbenefitsintermsofmechanical,opticalandthermalpropertiesoverLDPE.

EVA共聚物與LDPE比較可改善機(jī)械性能，光學(xué)和熱性能VariousadditivesareUsedtoobtaincertaincharacteristicsandcertainpropertiesoftheFilm通過加入各種添加劑，可獲取特定的特性和性能TypicalAgriculturalFilmSpecifications

典型農(nóng)膜規(guī)格ThemainresinsusedforagriculturalfilmsareLDPEandEVACopolymerswhichcanbeusedinblendswithLLDPE.用于農(nóng)膜的主要樹脂是LDPE和與LLDPE混合的EVA共聚物Bycarefulchoiceofresins,andadditives,Youcanexpecttoachievesomeorallofthefollowingbenefits通話謹(jǐn)慎的選取樹脂和添加劑，可取得如下全部或部分的特點(diǎn)Higheryieldpersquaremetre每屏幕的高產(chǎn)Precocity(earlyripening)早熟Superiorcropquality高質(zhì)量的谷物Producingoutofseason季后生長Watermanagement水的管理FilmProperties

膜的性能

TensileProperties拉伸性能Thestrengthofafilmcanbeexpressedinmanyways.Thecombinationofhightensilestrengthandhighelongationatbreakindicatethatthefilmcanwithstandstrongforceswithoutbreaking.膜的拉伸強(qiáng)度有很多表述方法。高的拉伸強(qiáng)度和高斷裂伸長率的結(jié)合可表明該膜可經(jīng)受強(qiáng)力的拉伸而沒有斷裂Creep蠕變Lowcreepisahighlydesiredpropertyforgreenhousefilmsandindicateshowmuchforceisretainedwhenthefilmisunderhighstress.低蠕變是大棚膜所希望的性能，表面膜在高應(yīng)力下可承受的力FilmProperties

膜的性能Clarity

透明度Films,whichremainhighlytransparent,arenecessaryfortheagriculturalindustry.EVAcompoundstypicallyproducefilmsthattransmitupto20%morelightthanconventionalpolyethylenefilms.對于農(nóng)業(yè)來說，膜保持高的透明度很重要。EVA混合物可比傳統(tǒng)PE膜提高透光率20％以上MulchFilm

地膜Mulchfilmisalsoavailableinothercolourssuchassilverandwhite.地膜也可有其他顏色，如銀和白Whitemulchfilmistypicallyusedforreflectancetokeepseedlingsfromgettingtoohot.白色地膜可用于反射以保持秧苗的溫度

Silveragriculturalfilmisalsousedforreflectanceandsoiltemperaturereduction.銀色膜也用于反射保持土壤的溫度的降低CropStorage&SiloFilm

作物儲(chǔ)存和倉儲(chǔ)膜

Polyethylenefilmsareextensivelyusedinthismarketsegmentformanyapplicationssuchas:PE膜被廣泛用于這個(gè)領(lǐng)域的多種應(yīng)用Temporarysilos

臨時(shí)倉儲(chǔ)Linersforgrainstoragefacilities

谷物倉儲(chǔ)設(shè)備的內(nèi)襯Groundsheets

地襯Flexiblebags

軟袋Flexiblesilagebagsspeedupfermentationofgreenfeedintosilage

軟袋可加速綠色飼料在倉儲(chǔ)中的發(fā)哮CropStorage&SiloFilm

谷物存儲(chǔ)和倉儲(chǔ)膜Flexiblebagshelpkeeptheproductfreshwhilereducingadditionalstoragespace.軟袋可保持產(chǎn)品的新鮮，并減少額外的儲(chǔ)存空間Polyethylenefilmsarealsousedashaybalecoversandcropdryingcoversinbadweather.PE膜也用于捆包的干草的覆蓋，并在不好天氣時(shí)的干燥谷物的覆蓋SomecropstorageandsilofilmscontainUVinhibitorstoextendfilmlife,andareheavydutyandreusable.

一些谷物儲(chǔ)存和倉儲(chǔ)膜可含有抗UV添加劑以延長膜的壽命，并可耐重和再次使用AgriculturalFilmsAgriculturalfilmmachineryneeds農(nóng)膜機(jī)械的需求5Mand7Mwidestationarynips5－7米的固定卡輥Gussetedandfoldedfilms插板和折疊的膜HighOutputscrewsgoodmixingandIBC高產(chǎn)，良好混合和內(nèi)冷FoldingdevicetoproduceU-fold;C-fold;doubleC-foldandotherpossibilities可進(jìn)行U，C,雙C和其他可能折疊的裝置Specialwindersforsmallrollsandautomatictransfer用于小卷和自動(dòng)換卷的特殊的收卷機(jī)APPLICATIONSUMMARY

應(yīng)用總結(jié)

MulchFilm:

地膜30–90micron,1000–1200mmWideClear/Pigmented,無色/顏色GreenhouseFilm

大棚膜100–250micron,4–18mWideClearVariousadditivesutilised無色各種添加劑FumigationFilms

熏蒸膜20–40micron,4–12mWideClearfilm無色SilageWrap儲(chǔ)存膜

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

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

典型生產(chǎn)線配置1x150mmand2x115mmExtruders擠出機(jī)3x4ComponentBlending組分ControlSystem控制1.2m-2m3LayerDie三層模頭DualLipAirRing雙口模氣環(huán)IBCCoolingCoils冷卻彎管Cage/BubbleStabilization泡籠/膜泡穩(wěn)定CollapsingFrames人字板GussetBoards差板3.5m-4.5mPrimaryNipRoll主卡輥25-30mTower塔架WidthMeasurementSystem寬度測量系統(tǒng)CoolingRollStation冷卻輥站Foldingstation折疊站SecondaryNipAssembly第二卡輥裝置SlitterStation分切站AutomatedWinder自動(dòng)收卷機(jī)RollHandlingequipment卷處理設(shè)備AgFilm

ProductStructures

農(nóng)膜的結(jié)構(gòu)Monolayer單層Limitedflexibilityinfilmproperties農(nóng)膜的性能靈活性有限Cannotmeetrequirementsformanyoftoday'sapplications不能滿足當(dāng)今很多應(yīng)用要求Co-extrusion共擠Allowsselectivityofresinsandblendstoachievedown-gaugingandtailoredfilmproperties可對樹脂和混合物有多種選擇，以取得薄的和特制的性能Allowsprocessortocontrolpropertiesofeachlayertodevelopaproductthatmeetsawiderangeofspecificrequirements可控制單層性能，開發(fā)各種特定要求的產(chǎn)品Improveseconomicsofproductionbyreducingtheamountofadditivesrequired減少添加劑的數(shù)量提高生產(chǎn)經(jīng)濟(jì)性Davis-StandardStrengths

戴維斯-標(biāo)準(zhǔn)的優(yōu)勢Extrusion+ScrewTechnology擠出＋螺桿技術(shù)DieTechnology(Inhousemanufacturingcapabilities)模頭技術(shù)（自己加工的能力）AirRing/GaugeControl(havesuppliedAPCsystemto1.7Mdiameter)氣環(huán)/厚度控制（可提供自動(dòng)膜厚控制系統(tǒng)，1.7米直徑）IBCSystem 內(nèi)冷系統(tǒng)LayflatControl 折徑控制CollapsingSystems人字板系統(tǒng)LineIntegration 生產(chǎn)線總成Winders 收卷機(jī)AfterSalesSupport售后服務(wù)支持RawMaterials-BaseResins

原材料-基本樹脂PrimaryComponents:LDPEandEVAcopolymers主要組分：VAContentandviscosityselectiondependentonapplicationVA的含量和粘度可根據(jù)應(yīng)用選擇MinorComponents:LLDPE,mLLDPE微量組分：Usedtoimprovephysicalpropertiesandallowfordown-gauging,ultimatelyimprovesclarity可提高物料性能和減少厚度，提高透明度RawMaterials–Additives

原材料-添加劑Additives:Usedtotailorfilmproperties添加劑:采用特定膜的性能UVresistance抗紫外性能Anti-block–EspeciallyforhighVAcontentfilms抗材料結(jié)塊-特別是高VA含量膜Anti-fog(oranti-drip)-Migratingadditivespreventaccumulationofcondensateonfilmsurface抗霧（抗滴）遷移添加劑可防止膜表面結(jié)霧的集結(jié)Anti-microbial抗微生物Anti-static-Preventsaccumulationofdustwhichcaninfluencelighttransmission抗靜電-防止沙塵的聚集從而影響透光性O(shè)ptical-Variousadditivescanincreaseordecreaseopacityandandphoto-selectivitybehaviorasdesired光學(xué)性能-不同的添加劑可增加或減少透明性和期望的光選擇IRradiationinhibitor–PreventinglossoflongwaveIRwaveswillhelpheatretention(thermalinsulation)紅外輻射控制－防止長波紅外波的損失，其可保持熱量（隔熱）AgFilm

PhysicalProperties

農(nóng)膜物理性能EffectofincreasingVAcontentonfilmproperties增加VA含量對農(nóng)膜性能的影響Stiffness 挺度Toughness 硬度Heatretention 熱保持Clarity 透明度Creep 蠕變ExtrusionConsiderations

擠出考慮Extrudersizingforhighoutputapplications高產(chǎn)應(yīng)用的擠出機(jī)的尺寸Homogenization均勻度Achievinguniformityofchallengingblends對不容易塑化均勻的混合物取得均勻Coolingrequirements冷卻需求Maintainingmelttemperaturecontrol保持融體溫度控制Homogenization

塑化均勻Homogenizationiscriticalforacceptableaestheticsandreliableperformanceofagriculturalfilms均勻性對于表觀和可靠的性能是非常關(guān)鍵Uniformityofpolymerblendsandmultiplemasterbatchadditives聚合物混合物和多母料添加劑的均勻性Uniformityoftemperatureandviscosityofextrudate溫度和擠出粘度的均勻性

DispersiveandDistributivemixingarerequiredinthesinglescrewextruder單螺桿擠出機(jī)分散混合ScrewDesign

螺桿設(shè)計(jì)Allofourextrudersemploybarrierscrewswhichofferexcellentversatility,allowingtheextrusionofawiderangeofpolymers

所有擠出機(jī)采用屏蔽式螺桿可提供多種物料的加工Ourscrewdesignsarewellproveninthefieldandconsistentlyhaveshowntheirabilitytoprocesshighqualityfilmathighthroughputrates.我們的螺桿證明可進(jìn)行在高速產(chǎn)量下優(yōu)質(zhì)薄膜的生產(chǎn)Mixing

混合DISTRIBUTIVE分布Increaseofinterfacialareabetweentwomisciblecomponents在兩易混合的組分直間界面的增加Splittingandrecombinationofflowstreams流體的分離和結(jié)合DISPERSIVE分散Shearinducedparticlesizereductionofimmisciblecomponents.MixingandQuality

混合和質(zhì)量Micro-graphs100X0.15MIHDPE+5%CBMBPoormixingcaneffect:很差的混合可影響Physicalproperties(tensilestrength,elongation,UV,anti-fog)物理性能（拉伸強(qiáng)度，伸長率，UV,和抗霧）ProductUniformity(consistentguage,layerdistribution)產(chǎn)品均勻性（均勻的厚度，層的分布）Aesthetics(opticalproperties,filmappearance)外觀（光學(xué)性能，表面）Excellent優(yōu)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流道線所示100XHDPE+5%CBMBPineappleMixingSection

波蘿混合段Multi-flightedwithcross-cutstocreaterhomboids有截面切割以產(chǎn)生菱型的多螺棱Allowsfordisruption/re-orientationofflowtosignificantlyimprovethedistributivemixingcapacityofascrew可分布/再進(jìn)行流體拉伸，極大提高螺桿均勻分布的能力PineappleMixingSection

波蘿混合段StreamlinesShowingDistributiveMixing所示分布混合流體100XHDPE+5%CBMBStaticMixers

靜態(tài)混Fixed,in-linemixerlocatedinmeltpipingpriortodie固定，線內(nèi)混合是在進(jìn)入模頭前融體管中Causesreorientationofflowstreamsforimproveduniformity可產(chǎn)生流體的再取向以提高均勻性Temperatureuniformity:溫度均勻性eliminatestemperature(andsubsequentviscosity)gradientsinthemeltstreamBlenduniformity:混合物均勻性ensurescompletelyuniformdistributionofmasterbatchesMeltTemperature

融體溫度Influencedprimarilybytwofactors:兩個(gè)主要影響因素Conduction傳導(dǎo)=functionof(residencetime,barrelset-points,limitationsofheating/coolingunits...)功能（停留時(shí)間，螺筒設(shè)定點(diǎn)，加熱冷卻單元的限制）Conductionhaslessinfluenceasextruderdiameterincreases隨著擠出機(jī)直徑的增加，傳動(dòng)的影響減少ViscousEnergyDissipation(VED)粘度能量分散=functionof(viscosity,shearrate...)功能（粘度，剪切速率）VED(orshearheat)increasesaspolymerviscosityincreases隨聚合物粘度的增加粘度能量分散性增大AgFilm

CoolingRequirements

農(nóng)膜冷卻要求ThreeCriticalFactors三個(gè)重要因素Largeextrudersarerequired–tempcontrolisdifficult大擠出機(jī)要求-溫度控制困難Limitedinfluenceofconductionbecauseofincreasedratioofpolymervolumetobarrelsurfacearea聚合物體積和螺筒表面區(qū)域比例的增加，限制了傳導(dǎo)的影響Highviscosity(lowMI)polymers高粘度（低MI)聚合物Generateshearheatduringextrusion產(chǎn)生剪切熱量Lowmelttemperatureisrequired要求低熔融溫度Tomaintainintegrityoftemperaturesensitiveadditives保持溫敏添加劑的一體化Tomaintainbubblestability保持膜泡穩(wěn)定Lowshearscrewdesignandadequateextrudercoolingcapacityarecriticaltocontrolmelttemperature 低剪切螺桿設(shè)計(jì)和足夠的擠出機(jī)冷卻能力是控制融溫的關(guān)鍵ScrewDesignOptimization

AgFilmApplications

農(nóng)膜應(yīng)用中的優(yōu)化螺桿設(shè)計(jì)Designobjectives:設(shè)計(jì)目標(biāo)Excellenttemperaturecontrolbalancedwithsufficientdispersiveanddistributivemixing有足夠分散和分布的混合平衡的優(yōu)異溫控Provendesignconcept:證明了的設(shè)計(jì)理念Davis-StandardBarrierTypeIIwithdualmixingsections戴維斯-標(biāo)準(zhǔn)屏蔽式II性螺桿有雙混合區(qū)Mixer1:HelicalMaddockMixer混合1:螺旋式混合器Mixer2:Pineapple(Multi-flighted)Mixer混合2：波蘿混合器ExpectedPerformance

期望性能ExtruderCoolingOptimization

AgFilmApplications

農(nóng)膜擠出機(jī)冷卻優(yōu)化Designobjectives:設(shè)計(jì)目標(biāo)Excellenttemperaturecontrolbalancedwithmaintenanceandcostadvantagesofaircooling風(fēng)冷的成本優(yōu)勢和維修優(yōu)勢的組合而成的優(yōu)異的溫控Provendesignconcept:已驗(yàn)證的設(shè)計(jì)理念Highefficiencyaircoolingsystem:MACExtruders高效風(fēng)冷系統(tǒng)：MAC擠出機(jī)MAC

ExtruderMACSeries

ofAirCooledExtruders

風(fēng)冷MAC系列擠出機(jī)AirCooledUsingaSingleSuctionBlower采用一個(gè)排風(fēng)機(jī)的風(fēng)冷AirControlDampersforeachZone每個(gè)區(qū)的風(fēng)控閥MinimalMaintenanceduetoSimplerDesign簡單的設(shè)計(jì)可最大程度減少維修InherentEnhancedPlantAirManagement提高工廠統(tǒng)一氣體排放RuggedGearboxwithHardenedGears堅(jiān)固的齒輪箱HighOutputDSBBarrierScrews高產(chǎn)量屏蔽式螺桿MAC

ExtruderAirFlowConceptFinnedHeaters

魚翅型加熱器Theheatersaresecuredwithmultiplecapscrewsasshowninthesetwophotos.AirPassesdownwardoverthefinsofthetwohalvesoftheheatersandisdirectedintotheflexibleductabovethecontroldampers.ValveActuators

開啟閥門DeepFinnedCastAluminumHeatersCommerciallyAvailableAirCylinders2M3-LayerAgriculturalFilmDie

2米三層農(nóng)膜模頭PROCESSREQUIREMENTS

加工要求

Agriculturalfilmsrequiretherightadditivecombinationsforthevariousdemandingfilmapplications

農(nóng)膜要求采用正確的添加劑來滿足不同薄膜應(yīng)用的要求ThecompoundsaremainlybasedonLDPEorvinylacetate(4to19%VA)polymersandsomecontainUV(ultraviolet)stabilisers.混合料主要由LDPE或VA含量在4-19的丙稀酸類聚合物為基礎(chǔ)，加入含有UV的穩(wěn)定劑EVAcopolymersnotonlyhaveoutstandingmechanicalproperties,butalsoexcellentopticalpropertiesandverygoodlongIR(infrared)radiationretention(thermicity).EVA不緊有優(yōu)異的機(jī)械性能，并且有優(yōu)異的光學(xué)性能和保持長波輻射的性能PROCESSREQUIREMENTS

加工要求Bubblestabilityand“drawdownability”areoftenconsideredasthemostimportantprocessparameters.

膜泡穩(wěn)定和“下垂拉能力”是加工考慮的主要因素Greenhousefilms,becauseoftheirenormouswidths,needverygoodbubblestabilityandthereforelowmeltindexgradesarechosen.

由于巨大的寬度，大棚膜需要非常好的膜泡穩(wěn)定性，所有要選擇低熔融指數(shù)材料Mulchingfilmontheotherhandneedsgood“drawdownability”,sohighermeltindicesarechosen.

地膜需要下垂拉性能，所以要選擇高熔融指數(shù)的材料PROCESSREQUIREMENTS

加工要求ToachievegoodmixingoftheadditivesandformoreconsistentoutputwithEVAcopolymers,asmoothboreextruderratherthenagroovedfeedextruderisrecommended.為了取得添加劑的良好混合和EVA共聚物的恒定產(chǎn)量，推薦使用光壁擠出機(jī)而不是螺紋進(jìn)料擠出機(jī)

Formaximumoutputandbestfilmquality,theuseofchilledairtotheairringandtheinternalbubblecoolingwhereusedishighlyrecommended.為了達(dá)到最大產(chǎn)量和最好的質(zhì)量，推薦采用冷卻風(fēng)環(huán)和內(nèi)冷系統(tǒng)PROCESSREQUIREMENTS

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

由于很多農(nóng)膜（高VA含量的EVA和LLDPE)粘的特性并要求有良好的光學(xué)性能，膜泡架和人字板的選擇對于得到穩(wěn)定高質(zhì)量薄膜是很重要的Thebiggestchallengeforanagriculturalfilmlineisthewinderassembly.農(nóng)膜線最大的挑戰(zhàn)是收卷機(jī)Inmanyapplicationstheshortrolllengths(<200m)arerequiredforeaseofhandling.

為了易于搬運(yùn)，很多應(yīng)用需要斷的膜卷MAC?Extruders

MAC擠出機(jī)SpecificallydesignedfortheblownfilmprocessutilizingvariableleadbarrierscrewsandACfluxvectororDCdrives.

專門用于吹膜加工，采用屏蔽螺桿，交流矢量電機(jī)Air-coolingsystemforenergyefficient,uniform,lowmaintenance,leakfreecooling.

空氣冷卻系統(tǒng)可使能量效率均勻，低維修，無冷卻泄漏Ambientairisdrawnthroughtheairintakeandovertheclosefittedfinnedheatersthatencasethebarrel.

室溫空氣由入口處進(jìn)入，魚翅型加熱器緊套在螺筒上Thewarmedairisexhaustedthroughtherigidstructuralbase/plenum.熱的空氣由底座抽出2M3-LayerAgriculturalFilmDie

2米三層農(nóng)膜模頭Forproductsrequiringverylargelayflatwidths,wehaveexperienceinmanufacturinglargediameterdies.

DieDesign

模頭設(shè)計(jì)Theengineeredshearratedesignisoptimizedtopromotehighshearratesandlowresidencetimes

優(yōu)化的剪切率的設(shè)計(jì)，可優(yōu)化提高剪切速率和少的停留時(shí)間Thisprovidesoptimumflowdistributionofeachlayerforprecisegaugecontrolandconsistentfilmquality.

可提供優(yōu)化的每層精確膜厚控制的流道分布和恒定的質(zhì)量AgriculturalFilmsBubbleWesJetAirRing

WestJet氣環(huán)TheWesJet?duallipairringfeaturesadesignwhichprovidesaconvergingairflowpatternbetweenthebubbleandtheairring’sformingcone.

WestJet雙唇氣環(huán)的特性設(shè)計(jì)形成了在膜泡和氣環(huán)風(fēng)圈之間的聚集的空氣的流動(dòng)WesJetAirRing

WesJet氣環(huán)SpecialShippingFixturesExportBox特殊發(fā)運(yùn)固定出口葙Requiredforlargecomponents大部件的需要D-Saddressestheseissues戴維斯-標(biāo)準(zhǔn)公司注意到這些問題WesJet?AutoProAutoprofileAirRing

自動(dòng)風(fēng)環(huán)

EmploysthesameaerodynamicprincipalsofourstandardWesJetairringbutwithasegmentedairflowcontrolsystem.WesJet風(fēng)環(huán)兼有上述的特性并有斷面氣流控制系統(tǒng)WesJet?AutoProAutoprofileAirRing

自動(dòng)風(fēng)環(huán)ThesoftwareandgaugingmeasurementissuppliedbyPlastControlandsupportedbyDavis-Standard

軟件和測厚由PlastControl公司提供，戴維斯支持Becauseweintegrateahighperformanceairringwithsegmentedairflowcontroltechnologywecanachieveexcellentoverallgaugeuniformitywithoutsacrificingperformance.由于結(jié)合了高性能的風(fēng)環(huán)和截面氣流控制技術(shù)，我們能取得優(yōu)秀的薄膜厚度均勻性而沒有性能的犧牲OnlymanufacturertosupplyAPCaslargeas2Mindiameter.我們是在2米如此大的模頭提供自動(dòng)膜厚控制的唯一供應(yīng)商AgriculturalFilms–UseofProfileControl

厚度控制Segmentedflowcontrolonlargediameterairrings–1500mmshown局部氣流控制，風(fēng)環(huán)1500mmWesJet?AutoProAutoProfileAirRing

自動(dòng)厚度控制風(fēng)環(huán)1.4mAutoProNewWinderforGusseted,HeavyFilm

收卷機(jī)Typicalturretwindersrequiremanualcutandtransfertoanewcorewhenheavyfilmsorgusseted,foldedfilmsarebeingwound.當(dāng)厚膜或插板，或折疊的膜收卷時(shí)，典型的轉(zhuǎn)塔收卷機(jī)需要手動(dòng)切割和更換新卷芯，Highincidenceofinjuriesinthismode.發(fā)生受傷的頻率很高M(jìn)ostautomaticcuttingdevicesdonotcutfoldedfilms.Pneumaticknifesoften“stall”.大部分自動(dòng)切割裝置不切折疊膜，而安裝氣動(dòng)刀Solution–Cross-cutrotaryshearknifesystemdrivenbyservomotor.解決方案－轉(zhuǎn)動(dòng)切刀剪切系統(tǒng)，由飼服電機(jī)驅(qū)動(dòng)Successfulon8foldsof8milfilm.在8折的薄膜取得成功HeavyFilmCrosscutTransfer

厚膜切割Cross-CutKnifeTapeonnewcoreCross-cutKnifedetail

AgriculturalFilms

農(nóng)膜

Smalldiameterrollwinderwithautocutthrough8-foldsoffilmeach6-8milthick.每層6－8mil厚的8折的膜自動(dòng)切割，小直徑卷收卷機(jī)Shafted(auto-cut)andshaftless(manualcut).有軸（自動(dòng)切割）和無軸（手動(dòng)切割）3-LAgFilmLine

三層農(nóng)膜線

D-Shassuppliedanewstateoftheartthree-layeragriculturefilmlinetoChinawithauto-profilecontroltoChinatoproduceanewstandardofagriculturefilmfortheChinesemarket.戴維斯提供有自動(dòng)厚度控制的三層農(nóng)膜生產(chǎn)線Thelineisabletoproducefilmsupto12mincircumferenceand150micronsthickatratesupto1650kg/hwhilecontrollingthethicknessprofiletotolerancesaslowas+/-3%.

可生產(chǎn)12米周長150微米厚的農(nóng)膜，產(chǎn)量1650kg/h,厚度公差為＋/－3％BubbleStabilizingCage

穩(wěn)泡籠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

收卷機(jī)AgriculturalFilms

農(nóng)膜

Smalldiameterrollwinderwithautocutthrough8-foldsoffilmeach6-8milthick.小直徑收卷機(jī)Shaftedandshaftlessauto-cut.有軸和自動(dòng)無軸KnifeAgriculturalFilms

Winder

收卷機(jī)TYPESOFAGRICULTURALFILMSANDTHEIRAPPLICATIONS

農(nóng)膜類型和應(yīng)用Thewidthofagriculturalfilmdependsuponitsapplicationandvariesgreatly.Atypicalrangeofwidthforagriculturalfilmisfrom600mmuptoapproximately12mwide.農(nóng)膜寬度取決于應(yīng)用而有所不同。一般在600mm到12m

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

農(nóng)膜Theprimereasonsforusingagriculturalfilmsaretoachieveearliercrops,biggerharvestsandgreatercropyieldperunitarea,hencegreaterprofitsforthefarmer.使用農(nóng)膜可取得高產(chǎn)，早熟和高產(chǎn)，而增加利潤Somefilmsaredesignedtoretainheat,otherstoreflectheat.有的膜設(shè)計(jì)為報(bào)持熱量，有的為反射熱量Somerequirehighlighttransmissionothersrequiretotalopacity.有的需要透光，其他需要不透光Thus,itisimpossibleforonemachinetomeetallthemarketrequirementswithinthismarketsegment.在一臺(tái)設(shè)備上不可能滿足市場所有要求GreenhouseFilmMarket

大棚膜市場Greenhousefilmistypically15mwideandcanbeproducedincustomlengthsaslongas1,200m.一般15m寬，1200m長Fordifferentperformancespecification