Keeb kwm tsom tsuas yog rau extrusion, cov kev xaiv tshiab rau cov ntoo-yas sib xyaw tau ua kom zoo rau qhib qhov rooj rau kev txhaj tshuaj molding.
Rau molding WPCs, qhov zoo tshaj plaws pellet yuav tsum yog hais txog qhov loj ntawm BB me me thiab sib npaug kom ua tiav qhov kev pom zoo-rau-ntim piv.
Lukas's Toy Factory, Danbury, Conn., tab tom nrhiav cov khoom siv biocomposite rau nws cov khoom ua si tsheb thauj khoom thiab tsheb ciav hlau.Lub tuam txhab xav tau ib yam dab tsi nrog lub ntuj ntoo saib thiab xav tias tseem tuaj yeem txhaj tshuaj molded los ua cov khoom ntawm lub tsheb.Lawv xav tau cov khoom siv uas tuaj yeem pleev xim kom tsis txhob muaj teeb meem ntawm tev xim.Lawv kuj xav tau ib yam khoom uas yuav ruaj khov txawm tias tawm sab nraud.Green Dot's Terratek WC ua tau raws li tag nrho cov cai no.Nws muab cov ntoo thiab cov yas rov ua dua tshiab hauv ib lub pellet me me uas zoo haum rau kev txhaj tshuaj molding.
Thaum cov ntoo-yas composites (WPCs) tsoo mus rau qhov chaw nyob rau xyoo 1990s raws li cov ntaub ntawv feem ntau extruded rau hauv cov laug cam rau decking thiab fencing, optimization ntawm cov ntaub ntawv no rau txhaj tshuaj molding txij thaum ntawd los muaj ntau yam diversified lawv muaj peev xwm siv raws li cov ntaub ntawv ruaj khov thiab ruaj khov.Environmental friendliness yog qhov zoo nkauj ntawm WPCs.Lawv tuaj nrog cov pa roj carbon monoxide tsawg dua li cov khoom siv roj av ntshiab thiab tuaj yeem tsim tau siv cov ntoo fibers nkaus xwb.
Ntau qhov kev xaiv ntawm cov khoom siv rau WPC formulations yog qhib lub sijhawm tshiab rau molders.Recycled thiab biodegradable yas feedstocks tuaj yeem txhim kho kev ruaj khov ntawm cov ntaub ntawv no.Muaj ntau qhov kev xaiv zoo nkauj, uas tuaj yeem hloov kho los ntawm kev sib txawv ntawm cov ntoo thiab ntoo particle loj hauv cov khoom sib xyaw.Hauv luv luv, kev ua kom zoo rau kev txhaj tshuaj molding thiab cov npe loj hlob ntawm cov kev xaiv muaj rau cov neeg sib xyaw ua ke txhais tau tias WPCs yog cov khoom siv ntau yam ntau dua li qhov tau xav.
YUAV UA LI CAS YUAV TSUM TAU TXAIS NTAWM LUB CHAW UA HAUJ LWM Muaj coob tus neeg koom nrog tam sim no muab WPCs hauv daim ntawv pellet.Txhaj tshuaj molders yuav tsum paub meej thaum nws los txog rau kev cia siab los ntawm compounders nyob rau hauv ob qhov chaw tshwj xeeb tshaj yog: pellet loj thiab noo noo cov ntsiab lus.
Tsis zoo li thaum extruding WPCs rau decking thiab fencing, uniform pellet loj rau txawm melting yog qhov tseem ceeb hauv molding.Txij li cov extruders tsis tas yuav txhawj xeeb txog kev sau lawv WPC rau hauv pwm, qhov xav tau ntawm cov pellet loj tsis zoo li qub.Yog li ntawd, nws yog ib qho tseem ceeb los xyuas kom meej tias ib tug compounder muaj cov kev xav tau ntawm kev txhaj tshuaj molders nyob rau hauv lub siab, thiab tsis yog overly tsom rau qhov ntxov tshaj plaws thiab thawj feem ntau siv rau WPCs.
Thaum cov pellets loj dhau lawm lawv muaj lub siab xav yaj tsis sib npaug, tsim kev sib txhuam ntxiv, thiab ua rau cov khoom lag luam tsis zoo kawg nkaus.Qhov zoo tshaj plaws pellet yuav tsum yog hais txog qhov loj ntawm BB me me thiab sib npaug kom ua tiav qhov zoo tagnrho saum npoo-rau-ntim piv.Cov qhov ntev no pab kom qhuav thiab pab kom muaj kev sib luag zoo thoob plaws hauv cov txheej txheem tsim khoom.Txhaj tshuaj molders ua hauj lwm nrog WPCs yuav tsum cia siab tias yuav zoo tib yam thiab uniformity lawv koom nrog cov tsoos yas pellets.
Dryness kuj yog ib qho tseem ceeb rau kev cia siab los ntawm ib tug compounder's WPC pellets.Cov dej noo hauv WPCs yuav nce ntxiv nrog rau cov ntoo muab tub lim hauv cov khoom sib xyaw.Thaum ob qho tib si extruding thiab txhaj tshuaj molding xav tau cov ntsiab lus tsis tshua muaj dej kom tau txais txiaj ntsig zoo tshaj plaws, kev pom zoo cov dej noo qis me ntsis rau kev txhaj tshuaj molding dua rau extrusion.Yog li ntxiv, nws yog ib qho tseem ceeb kom paub tseeb tias tus compounder tau txiav txim siab txhaj tshuaj molders thaum lub sijhawm tsim khoom.Rau kev txhaj tshuaj molding, qib noo noo yuav tsum qis dua 1% rau qhov pom tau zoo.
Thaum cov neeg muab khoom siv rau lawv tus kheej kom xa cov khoom uas twb muaj cov dej noo txaus, cov tshuaj molders siv sij hawm tsawg dua kom qhuav cov pellets lawv tus kheej, uas tuaj yeem ua rau txuag nyiaj ntau ntawm lub sijhawm thiab nyiaj txiag.Txhaj tshuaj molders yuav tsum xav txog kev yuav khoom ib puag ncig rau WPC pellets xa los ntawm cov chaw tsim khoom nrog cov dej noo qis dua 1%.
FORMULA & TOOLING CONSIDERATIONS Qhov piv ntawm ntoo rau yas hauv cov mis ntawm WPC yuav muaj qee qhov cuam tshuam rau nws tus cwj pwm thaum nws mus dhau ntawm cov txheej txheem tsim khoom.Qhov feem pua ntawm cov ntoo tam sim no nyob rau hauv cov khoom sib xyaw yuav muaj kev cuam tshuam rau lub melt-flow index (MFI), piv txwv li.Raws li txoj cai, cov ntoo ntau ntxiv rau qhov sib xyaw, qhov qis dua MFI.
Cov feem pua ntawm cov ntoo kuj yuav muaj cov kabmob ntawm lub zog thiab qhov tawv ntawm cov khoom.Feem ntau hais lus, qhov ntau ntoo uas tau ntxiv, cov khoom ua kom nruj dua.Ntoo tuaj yeem ua tau ntau npaum li 70% ntawm tag nrho cov ntoo-yas sib xyaw, tab sis qhov ua tau zoo los ntawm kev siv nyiaj ntawm cov khoom siv zaum kawg, mus rau qhov chaw uas nws tuaj yeem ua rau nkig.
Cov ntoo ntau dua kuj tseem ua rau lub sijhawm ua haujlwm luv luv los ntawm kev ntxiv cov khoom ntawm qhov ruaj khov rau cov ntoo-yas sib xyaw thaum nws txias hauv pwm.Qhov kev txhim kho cov txheej txheem no tso cai rau cov yas tshem tawm ntawm qhov kub siab dua qhov uas cov khoom siv niaj hnub tseem mos dhau los yuav raug tshem tawm ntawm lawv cov pwm.
Yog tias cov khoom yuav raug tsim los siv cov cuab yeej uas twb muaj lawm, lub rooj vag loj thiab cov duab dav dav ntawm cov pwm yuav tsum tau ua rau kev sib tham ntawm qhov zoo ntawm cov ntoo-particle loj.Ib qho me me yuav zoo dua rau kev siv cuab yeej nrog cov rooj vag me me thiab nqaim txuas ntxiv.Yog tias lwm yam tseem ceeb twb tau coj cov neeg tsim qauv los daws qhov loj ntawm cov ntoo loj, ces nws yuav muaj txiaj ntsig zoo los kho cov cuab yeej uas twb muaj lawm.Tab sis, muab cov kev xaiv uas twb muaj lawm rau qhov sib txawv particle loj, qhov tshwm sim no yuav tsum zam tau kiag li.
PROCESSING WPCs Cov txheej txheem tshwj xeeb kuj tseem muaj qhov cuam tshuam rau qhov hloov pauv loj raws li qhov kawg tsim ntawm WPC pellets.Txawm hais tias feem ntau ntawm kev ua haujlwm tseem zoo ib yam li cov khoom siv niaj hnub, qhov sib piv ntawm cov ntoo-rau-yas thiab lwm yam khoom siv ntxiv los ua kom tiav qee qhov kev xav, xav, lossis cov yam ntxwv ua tau zoo yuav tsum tau suav rau hauv kev ua haujlwm.
WPCs kuj sib xws nrog cov neeg ua npuas ncauj, piv txwv.Ntxiv ntawm cov tshuaj foaming no tuaj yeem tsim cov khoom zoo li balsa.Qhov no yog ib qho khoom muaj txiaj ntsig thaum cov khoom tiav yuav tsum tau tshwj xeeb yog lub teeb yuag lossis buoyant.Rau lub hom phiaj ntawm kev txhaj tshuaj molder, txawm li cas los xij, qhov no tseem yog lwm qhov piv txwv ntawm yuav ua li cas sib txawv ntawm cov ntoo-yas composites yuav ua rau muaj kev xav ntau dua li thaum cov ntaub ntawv no thawj zaug tuaj rau kev lag luam.
Kev ua haujlwm kub yog ib cheeb tsam uas WPCs txawv ntawm cov khoom siv yas.WPCs feem ntau ua haujlwm ntawm qhov kub ntawm ib puag ncig 50 ° F qis dua tib yam khoom tsis tau ntim.Feem ntau cov khoom siv ntoo yuav pib hlawv ntawm thaj tsam 400 F.
Shearing yog ib qho teeb meem tshwm sim thaum ua WPCs.Thaum thawb cov khoom kub dhau los ntawm lub rooj vag me me, qhov sib txhuam ntau ntxiv muaj qhov nyiam hlawv ntoo thiab ua rau cov lus qhia streaking thiab tuaj yeem ua rau cov yas thaum kawg.Qhov teeb meem no tuaj yeem zam tau los ntawm kev khiav WPCs ntawm qhov kub thiab txias, ua kom lub qhov rooj loj txaus, thiab tshem tawm cov kev hloov tsis tsim nyog lossis cov kaum sab xis raws txoj hauv kev.
Qhov ntsuas kub ua haujlwm qis txhais tau hais tias cov tuam txhab tsim khoom tsis tshua xav tau kom ua tiav qhov kub siab dua li ib txwm siv polypropylene.Qhov no txo qis txoj haujlwm nyuaj ntawm kev noj cov cua sov tawm ntawm cov txheej txheem tsim khoom.Tsis tas yuav muaj qhov sib ntxiv ntawm cov khoom siv cua txias, pwm tsim tshwj xeeb los txo cov cua sov, lossis lwm yam kev ntsuas txawv tshaj plaw.Qhov no txhais tau hais tias ntxiv txo lub voj voog lub sij hawm rau cov tuam txhab lag luam, nyob rau sab saum toj ntawm lub voj voog nrawm dua vim muaj cov khoom siv organic.
Tsis yog rau DECKING WPCs tsis yog rau decking ntxiv lawm.Lawv tau ua kom zoo rau kev txhaj tshuaj molding, uas yog qhib lawv mus rau ntau yam khoom siv tshiab, los ntawm cov rooj tog zaum rau tsiaj cov khoom ua si.Ntau hom kev tsim muaj tam sim no tuaj yeem txhim kho cov txiaj ntsig ntawm cov ntaub ntawv no nyob rau hauv cov nqe lus ntawm sustainability, zoo nkauj ntau haiv neeg, thiab nta xws li buoyancy lossis rigidity.Kev thov rau cov ntaub ntawv no tsuas yog nce ntxiv raws li cov txiaj ntsig tau paub zoo dua.
Rau kev txhaj tshuaj molders, qhov no txhais tau tias muaj ntau qhov sib txawv tshwj xeeb rau txhua qhov kev tsim yuav tsum raug suav rau.Tab sis nws kuj txhais tau hais tias molders yuav tsum cia siab tias ib yam khoom uas zoo dua rau kev txhaj tshuaj molding dua feedstock uas tau xaiv feem ntau yuav extruded rau hauv boards.Raws li cov ntaub ntawv no txuas ntxiv txhim kho, txhaj tshuaj molders yuav tsum tsa lawv cov qauv rau cov yam ntxwv uas lawv xav pom hauv cov khoom sib xyaw uas xa los ntawm lawv cov neeg muab khoom.
Txias nias-hauv threaded inserts muab ib tug ruaj khov thiab nqi-zoo lwm txoj rau tshav kub staking los yog ultrasonically ntsia threaded inserts.Tshawb nrhiav qhov zoo thiab pom nws ua haujlwm ntawm no.(Cov ntsiab lus txhawb nqa)
Pib los ntawm kev xaiv lub hom phiaj melting kub, thiab xyuas ob npaug rau daim ntawv teev cov ntaub ntawv rau cov khoom lag luam cov lus pom zoo.Tam sim no rau tus so ...
Post lub sij hawm: Aug-06-2019