TSEEM CEEB
Sheet extrusion transforms TP cov ntaub ntawv rau hauv yob los yog daim ntawv Tshuag los ntawm kev sib xyaw ntawm tshav kub thiab siab.The extruder plasticizes cov yas thiab twj tso kua mis los ntawm ib tug tuag thiab nws tseem downstream nyob rau hauv daim ntawv kab.Cov nqe lus ntawv los yog sheeting feem ntau piav txog ib lub tiaj yas.
cov khoom uas yog {{0}}.25mm los yog ntau dua nyob rau hauv thickness. Qee qhov kev lag luam siv 0.l0mm ua kab sib faib ntawm zaj duab xis thiab daim ntawv. Qhov dav tuaj yeem ncav cuag li 3m (loft).
Sheet extrusion tshuab tsim ib txheej khoom raws li ntau txoj kev coextruded los yog ntau txheej engineered khoom.
Ib daim ntawv extrusion kab muaj kev tswj kom zoo
extruder, ntawv tuag, kub tswj (ib leeg
rhuab los yog txias) polishing peb yob pawg (sawv), tshem tawm cov cuab yeej [xws li ntsuas ntsuas thiab tswj ntug trimmers, antistatic li, cua txias, txias tunnels, conveyors, slitters, rub los yog nip yob, nro yob, thiab / los yog hla cov cuab yeej txiav], thiab ib qho (turret) cua-up lossis stacking khoom. Cov peev txheej dhau los ntawm cov kab no tuaj yeem ncav cuag yam tsawg kawg yog 400-1100kg/h.
Cov khoom siv yas
Ntau qhov sib txawv hloov tau rau cov thermoplastics nruj tuaj yeem raug extruded rau hauv cov ntawv pob tshab lossis xim. Lawv suav nrog ABS, AN, PA, PET, PETG, PMMA, PC, PE, PP, PS, PUR, thiab PVC.
Kev ua PET
Khiav PET (polyethylene terephthalate) yas los ntawm cov kab ntawv extruder yeej tsis tas yuav muaj kev txawj ntse. Feem ntau cov kab ntawv PET tuaj yeem tswj hwm los ntawm cov khoom siv tswj hwm tus qauv.
Kub thoob plaws hauv kab yuav tsum tau khaws cia siab tshaj cov yas melting point. Lub qhov hluav taws xob rov qab yog siv nrog PET. Qhov siab tshaj plaws los ntawm extruder lub caj pas pub rau lub thoob kawg yuav yog 316-260 degree (600-500 degree F). Qhov kev tawm mus tuag yog los ntawm 300-260 degree (570-500 degree F). Yog tias thawj ob thaj chaw tsis kub txaus, qhov tshwm sim yuav tshwm sim. Kub kub heev melting kub ua rau IV degradation.
PET tsis yooj yim rau extrude ntawm cov pa ntawv extrusion khoom muab nws tau ua tib zoo predried. Qhov no yog vim hais tias ib tug me me ntawm noo noo nws muaj reacts nrog molten yas uas ua rau poob ntawm molecular hnyav thiab nyob rau hauv lub cev zog. Kev ziab PET tuaj yeem yog qhov nyuaj thiab kim.
Cov txheej txheem PVC
Poly (vinylchloride) PVC muaj qhov zoo dua li cov khoom siv ib txwm siv vim nws qhov tawv thiab hloov tau yooj yim. PVC kuj yog ib qho khoom siv tau yooj yim thiab tus nqi qis. Thaum ua tiav, PVC xav tau cov khoom siv sib piv. Thaum ua tiav, PVC yuav tsum muaj zog tsawg dua piv nrog rau kev tsim khoom, piv txwv li, ntawv thiab hlau. Nws lub cev thiab cov khoom tiv thaiv ua rau PVC hloov pauv rau ntau daim ntawv thov. Rau qee cov khoom siv PVC, cov khoom siv kho tshuab xws li lub zog thiab tawv tsis txaus.
Lub thermal stability ntawm PVC yog tsuas yog nyob ntawm qhov kub thiab txias lub sij hawm nyob rau hauv ib tug extruder. PVC compounds feem ntau yuav tsum tau yaj kub ntawm 190-195 degree. Qhov kub yaj yog xav tau los txhim kho lub cev zoo hauv cov khoom PVC. Cov cuab yeej siv tau yooj yim muab kev ua haujlwm ntev yam tsis muaj kev cuam tshuam cov txheej txheem. Ib qho me me ntawm qhov kub thiab txias yuav muab cov zis zoo dua thiab yaj uniformity. Kev ua haujlwm kub siab dua yam tsis muaj kev ruaj ntseg thiab cov roj nplua nyeem tuaj yeem ua rau kev puas tsuaj ua ntej.
Kev tuav lub uniformity ntawm lub thickness ntawm daim ntawv yog ib qho tseem ceeb heev. Sheet thickness yog tswj los ntawm kev kho Qhov ntws los ntawm qhov tuag los yog kho qhov sib txawv ntawm cov yob.Qhov kub ntawm cov yob yuav tsum sib npaug kom muaj qhov zoo tshaj plaws ntawm qhov chaw thiab ceev txias.cov yob yuav tsum sib npaug kom muaj qhov zoo tshaj plaws ntawm qhov chaw thiab ceev ceev txias. residual kev nyuaj siab. Cov yob kub siv yog 50-90 degree
Kab Cheebtsam
Cov khoom sib txawv thiab tseem ceeb ntawm cov ntawv extrusion kab ua raws li qhov tuag. Ib yam li cov khoom siv tsis raug cai thaum pib-kwj tawm) ntawm txoj kab tuaj yeem txwv lossis ua rau txoj kab kev ua haujlwm tsis zoo, tib yam muaj tseeb nrog cov khoom siv qis qis. Cov khoom sib txawv com-ponents yuav tsum tau ua kom zoo thiab sib cuam tshuam nrog ib leeg.
Yob pawg
Cov kub yaj los ntawm cov slit tuag yog qhia rau feem ntau yog peb lub yob pawg uas tau nruab nrog kev ceev ceev kev nyab xeeb tso tawm qhov sib txawv ntawm cov yob qhib thaum muaj xwm txheej ceev.Raws li cov extrudate tawm ntawm qhov tuag, nws yuav tsum tau txais kev txhawb nqa thaum nws kub thiab nyob rau hauv ib lub xeev semimolten. Kev them nyiaj yug yog muab yuav luag tam sim ntawd los ntawm yob sawv ntsug. Txawv txoj kab uas hla polishing yob xws li 20-76 cm (8-30in)] yog siv; cov rolls loj dua muab kev ua tau zoo nrog cov nqi tso zis ntau dua.
Rolls tuaj yeem embossed los ua kom tiav qhov kawg ntawm daim ntawv. Lawv tuaj yeem muab cov qauv tshwj xeeb lossis textures, xws li prismatics rau kev lag luam teeb pom kev zoo, grained nto rau lub nra, paneling, thiab hniav overlays, thiab lwm yam. Embossing tuaj yeem ua tiav tsis tu ncua thaum daim ntawv (tseem profiles, thiab lwm yam) extrusion nrog me me lossis tsis txo qis hauv cov zis. Nyob ntawm cov qauv thiab cov yas siv, txias dua li cov yob ib txwm siv, xws li 50 degree (125 degree F) ntawm embossing yob, los tiv thaiv kev rov qab los ntawm qhov kev xav ntawm qhov chaw.Qhov zoo ntawm daim ntawv yog ncaj qha ntsig txog qhov zoo ntawm qhov chaw. ntawm cov rolls stacked. Yog li ntawd, chrome plated
rolls uas tau hauv av mus rau qhov chaw ntawm 76-15Onm (3-6μin) feem ntau xav tau kom zoo gloss.
Qhov ntim ntawm dej thiab roj los ntawm ob lub plhaub yob yog qhov tseem ceeb rau kev tswj kom txias thiab kub.
Lub peev xwm txias ntawm lub yob sawv ntsug yuav tsum yog qhov loj me rau qhov extrudate tawm ntawm tus extruder.
Tshuag kub, daim ntawv thickness, thiab linear mus txawv tebchaws yog ib qho tseem ceeb rau optimizing yob txoj kab uas hla. Ua piv txwv, thaum ua ABS ntawm 365kg / h (8001b / h) siv 11.4cm (4.5in) ntsia hlau extruder daim ntawv kab, nws yuav txaus siv 30cm (12in) inch rolls. Ntawm tus nqi tshaj 910kg / h (20001b / h), yob tuaj yeem muaj li ntawm 60 txog 70cm (24 txog 30in) inch. Feem ntau muaj rolls loj dhau tsis yog ib qho teeb meem vim tias cov yob kub tuaj yeem ua kom siab.
Peb lub yob sawv tuaj yeem nyob rau hauv ntau txoj haujlwm kom tau raws li cov khoom siv yas sib txawv thiab qhov chaw tiav qhov xav tau.
Coextruded thiab laminated ntawv
coextruded los yog laminated khoom siv ntau yam sib txawv lay-ups yuav extruded Nyob rau hauv lem, lub coextruded yaj yuav raug coj mus rau hauv peb yob pawg los tsim cov nplooj ntawv.
Cov khoom laminated kuj tuaj yeem ua tau siv peb lub yob stacks.Qhov no, ib zaj duab xis lossis cov khoom siv hauv web yog unwound los ntawm yob (pay-off chaw nres tsheb) txhawb nqa saum pawg (Fig. 9.19 thiab 9.20). Cov yeeb yaj kiab yog pub rau hauv nip ua ke nrog lub vev xaib molten uas tawm ntawm extruder tuag. Cov zaj duab xis bonds rau daim ntawv thiab hloov nws cov khoom tshwj xeeb nto
Rub yob
Ib txheej ntawm rub rolls (feem ntau yog roj hmab npog) hauv kab txav daim ntawv tawm ntawm qhov kawg txias yob thiab raws li qhov txias txias.
tawm ntawm qhov kawg txias yob thiab raws li qhov txias conveyor
tshaj qhov rub rolls. Cov kev hloov ceev no tseem ceeb heev thaum lub teeb tsa. Qhov kev ua no ua kom cov ntawv tiaj tus thiab taut thaum lub sijhawm txias. Cov rolls rub kom cov ntawv txav mus thiab pub nws mus rau qhov kawg ntawm kab. Lawv muab tsis tau txias los yog shaping.
Trim thiab slitting
Up-kwj ntawm rub yob, trim riam yog siv. Lawv muab txoj hauv kev rau ntug luas ob sab ntawm daim ntawv thiab kuj yog thaum yuav tsum tau hlais daim ntawv rau hauv ntau qhov dav siv tshwj xeeb tsim rab chais slitters.
Cov txheej txheem tswj
Lub hauv paus microprocessor tswj rau cov kab tiav tuaj yeem siv tau.Software muaj nyob rau hauv uas tau preprogrammed muab meej, rov ua dua, hauv nruab nrab ntawm cov ntawv extrusion kab. Cov zaub tswj yuav muab cov ntaub ntawv xav tau los teeb tsa thiab kho cov khoom siv hauv kab. Nws muab txoj hauv kev yooj yim los hloov qhov chaw ntawm txhua qhov haujlwm thiab sib cuam tshuam lawv.
txiav-oua ff
Thaum kawg ntawm txoj kab, cov nplooj ntawv tuab tuaj yeem txiav kom ntev siv cov khoom siv ntawm cov casters kom haum rau kev tshem tawm. Muaj ntau hom cutters los lis ntau yam ntawm cov ntawv yas sib txawv uas muaj los ntawm kev nkig mus rau nonbrittle Lawv yog tsim los txiav cov ntawv sib xws thiab tiv thaiv chatter cov cim hauv daim ntawv. Thickness txog li 8 hli (0.30in) feem ntau yog sheared tab sis nws nyob ntawm cov yas txiav cov yam ntxwv.
TUB TUAG
Qhov pom tseeb ua haujlwm ntawm qhov tuag yog los tswj cov duab ntawm extrudate.Lo lus tseem ceeb yog tswj. Txhawm rau ua qhov no, lub extruder yuav tsum xa cov khoom siv yaj mus rau qhov tuag ntawm qhov kub thiab txias, siab, thiab cov zis tawm.
Kev xaiv ntawm qhov tuag yog cuam tshuam los ntawm qhov zoo ntawm daim ntawv yuav tsum tau ua.
Raws li ib qho piv txwv, thaum ua PS, cov yaj tuaj yeem khiav los ntawm cov tuag uas muaj cov kab nrib pleb los yog tapered manifolds. Nrog ABS, cov streamlined manifold tuag, xws li cov coatangers nrog hloov tau daim di ncauj thiab lub sij hawm tsawg kawg nkaus, yog siv. Txij li thaum ABS muaj viscous ntau dua PS, ABS tuag yuav tsum tau tsim los ua haujlwm ntawm qhov siab ntawm {{{0}}MPa (1500-32OOpsi) rau 120mm (4.5in) extruder . Kev siv qis dua yog siv nrog PS.Nrog cov viscosity plastics ntau dua, xws li PC, lub zog sab hauv xav kom cov tuag kom muaj zog yog li tsis muaj kev tuag deflection tshwm sim thaum ua. Cov tuag rau PC yuav tsum tiv taus siab ntawm 28-42MPa (4000-6OOOpsi). Txawm tias siab dua tuaj yeem tsim tau thaum cov ntawv nyias nyias ua tiav. Cov tuag yuav tsum nqaim qhov sib txawv ntawm qhov tsawg dua 0.8 hli (0.030 hauv).
APPLICATIONS
Cov kev tsim kho sib txawv ntawm cov ntawv txheeb no muab cov txiaj ntsig zoo sib txawv rau cov khoom sib txawv. Kev ua yeeb yam muaj xws li:
(1) siab gloss kim txheej tshaj tawv nongloss tsis tshua kim substrate;
(2) nyias weatherable, feem ntau kim, txheej dhau ib qho tawv, tsis tshua muaj nqi, nonweatherable substrate;
(3) gloss txheej tsawg dua ib qho tawv, tus nqi qis, substrate;
(4) nyias nyias cov hniav zoo nkauj (ntoo lis, marble, thiab lwm yam) txheej txheej txheej tawv, tsis tshua kim substrate;
(5) vapor barrier dhau ib qho tawv thiab muaj zog substrate;
(6) chemical resistive txheej dhau ib qho tsis tshua kim substrate;
(7) soft touch txheej tshaj tus nqi zoo tawv substrate;
(8) kom raug xim matched cap eover ib tug tsis muaj xim tsis tshua kim substrate;
(9) daim ntawv nrog lub hauv paus ntawm cov yas siv dua tshiab nrog sib txawv overlays; thiab
(10) lwm tus.
PVC vov tsev ntawv extrusion kab
SPC Marble ntawv extrusion kab