Kev tsim cov txheej txheem
Peb yog ib lub tuam txhab luam ntawv loj hauv Shenzhen Tuam Tshoj. Peb muaj cov phau ntawv luam tawm, phau ntawv xov xwm luam ntawv, phau ntawv luam ntawv, phau ntawv nyuaj, phau ntawv luam tawm, phau ntawv luam tawm, phau ntawv luam tawm, lub thawv ntim, daim qhia ntawv, txhua yam ntawm PVC, cov ntawv luam tawm, ntawv sau cia, hom tshwj xeeb ntawv xim luam tawm khoom, kev ua si cardand li ntawd.
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1. Kev kho mob Corona ntawm cov yas hlau nto:
Txoj kev kho pob zeb saum npoo ntawm PV, PP, thiab cov ntawv txhuas txhuas yuav tsum tau nqa tawm ua ntej luam tawm thiab ua dej num. Lub hom phiaj yog los txhim kho cov ntaub ntawv sib sau ua ke kom ua tau raws li qhov kev xav tau thiab ua kom muaj qhov nyhav tseem ceeb thaum lub caij luam ntawv thiab kev sib txuas lus. Ntau tshaj 38 millinewtons / meter; rau cov ntaub ntawv ua ke siv ua khoom noj, lub pob zeb sab hauv puab yuav tsum siab tshaj 70μ kom muaj kev tshav ntuj kub txaus.
2, txheej txheem sib sau ua ke:
Cov zaj yeeb yaj kiab tuaj yeem txhim kho ntau yam khoom ntawm ib zaj duab xis thiab tuaj yeem txhim kho kev tiv thaiv ntawm cov khoom, xws li kev ruaj nchuav, roj pleev roj, khoom vaj khoom tsev, thaiv cov cuab yeej thiab cua nruj. Raws li cov substrates sib txawv thiab cov kev siv sib txawv, cov txheej txheem ntawm cov yeeb yaj duab ua ke yuav tsum tau muab faib ua ke rau hauv tsib yam nram qab no:
A, qhuav sib tov txujci
Txoj kev no yog ib txoj hauv kev uas siv ib daim ntawv rau ib qho chaw ntawm lub substrate los ntawm lub cav laminating thiab laminated los ntawm ib tug neeg ua cua kub rau txuas nrog lwm zaj duab xis. Hom no muaj peev xwm yuav siv rau txhua qhov substrates, thiab ntau cov khaubncaws sab nraud povtseg tuaj yeem tsim muaj, thiab tau siv ntau yam kev lagluam. Cov nqi khoom siv yog pheej yig tshaj li lub tshuab extrusion compound. Tsis ntev los no, lub ntim ua haujlwm ntau zog vim yog kev kho mob thiab kev kub nyhiab, thiab lub nplaum feem ntau yog ua los ntawm ib lub tshuab polyurethane uas muaj kev nplua zoo heev. Tsis tas li ntawd, nyob rau hauv txoj kev sib xyaw qhuav, qhov hnyav seem yog ua rau muaj kev puas tsuaj xws li cov pa phem, hluav taws, tawg, thiab lwm yam. Txhawm rau daws cov teeb meem no, yuav tsum tsim kom muaj ntau hom organic solvent, uas muaj cov nram qab no:
· Tsis muaj kuab tshuaj, txo tej huab cua phem.
· Tsis muaj hluav taws lossis teeb meem tawg.
· Tsis muaj kev txhim kho kev hnoos qoob loo yuav tsum txuag hluav taws xob thiab khoom khau.
• Tsis muaj teeb meem cuam tshuam tus zauv luam ntawv.
· Tsis tas yuav rov qab siv cov khoom siv coj los ua dua tshiab.
· Txo cov nqi txo vim tias kev nce zuj zus.
B, ntub cov txheej txheem
Cov qauv no yog siv rau kev sib xyaw ntawm cov ntawv txhuas thiab cov khoom txeem xws li ntawv, daim ntawv ntawv thiab cov khoom siv tib si. Ib pob-dej zoo li lub cev (gelatin, starch), ib pob bacterial-dispersible binder (vinyl acetate latex, etc.) yog siv rau ntawm cov substrate hauv ib lub xeev ntub kom sib xyaw nrog lwm cov ntaub ntawv, thiab tom qab ntawd nias thiab qhuav los ntawm yob. Txoj kev no yooj yim rau kev khiav lag luam thiab muaj peev xwm ua tau nrog cov nqi me me. Cov roj hmab tsis zoo (5 ~ 6μ) kuj tseem tuaj yeem ua rau. Muab piv rau lwm txoj kev sib xyaw, nws yog ceev thiab tuaj yeem ua tiav hauv tus nqi loj, thiab tus nqi ua haujlwm tsawg heev. Nws tsis siv organic solvents, nws muaj kev ruaj ntseg heev, tsis muaj qhov hnyav residual, thiab lub lag luam centered nyob rau hauv cov ntaub ntawv raws li ntawv kuj ruaj khov.
C, extrusion compounding txoj kev
Qhov no yog txoj kev siv ntau tshaj plaws hauv kev sib xyaw ua ke. Extrusion tshuab siv rau extrude PP, PE, EVA (ethylene-vinyl acetate copolymer) ionic resin rau hauv ib zaj duab xis, thiab yog coated nrog ib tus neeg saib xyuas (polyethyleneimine, Ntau films ntawm polyurethane cob, etc. yog compounded, txias thiab solidified. txoj kev tiv thaiv kev ua haujlwm vim kev siv cov tshuaj nplaum (txiv neej anhydride-hloov olefin-based resin, thaiv kev hloov kho olefin xws li txiv neej anhydride, etc.) Yog li, nws yuav txo tau tus nqi ntawm txoj kev tsis siv lub nplaum.
D, kub yaj compounding method
Cov txheej txheem yog sib xyaw rosin, xylene resin, styrene resin, thiab lwm yam hauv lub hauv paus xws li EVA (ethylene-vinyl acetate copolymer), EEA (ethylene-ethyl acrylate copolymer), PE, lossis rubyl roj hmab. Tus neeg kub ntxhua sov xws li ib qho nplaum thiab ib qho chaw zom zaws rau hauv hnab tawv ncauj yog siv rau ib zaj duab xis, ntawv ntim, los yog ib daim ntawv txhuas ntawv, thiab tau muab tso rau ntawm lwm lub substrate kom txias.
Nws yog tsuas yog siv los ua cov ntaub ntawv npog rau ntau lub thawv, thiab yuav tsum tau muaj cov tawv nqaij tsis kam. Cov nplaum yog sib xyaw rau hauv lub txoos ua qauv xws li EVA, thiab extrusion txheej txheem yog siv rau lub substrate los txhim kho tshav kub.
E, coextrusion compounding txoj kev
Cov txheej txheem yog ob-txheej los yog ntau zaj duab xis uas tau muab los ntawm kev sib sau ua ke ntawm ob los yog peb qho extruders, thiab muaj ib txoj kev T-tuag thiab lub tshuab moulding txoj kev, thiab tuaj yeem ua ntau hom kev sib xyaw kom tsim tau cov yeeb yaj kiab ultra-thin. Nyiv xyoo cov khoom muag muaj ze li ntawm 10,000 tons, thiab ntau tshaj li peb lub hlis twg ntawm Teb Chaws Asmeskas zaj duab xis yog coextruded. Sawv cev hnub nyoog: PE / PVDC / PE, PE / PP / PE, PP / PE / PVA, PE / EVA, N / PE, lwm yam.
Txoj kev no tsis muaj teeb meem nyob rau tib hom ntawm cov ntaub qhwv tsev, tab sis nws tsis tuaj yeem koom ua nylon los yog EVAL los ntawm polyolefin. Nws tuaj yeem tsim los ntawm kev hloov polyolefin nrog ionic resin-txiv neej anhydride. Zoo zaj duab xis. Cov coextruded films muaj qhov kom zoo dua nyob rau hauv thaj chaw ntawm cov zaub mov ntim thiab muaj kev sib koom ua lag luam siab.