Bacda PE waa bac caadi ah oo nolol maalmeedkeena ah, oo loo isticmaalo dhammaan noocyada baakadaha miraha iyo khudradda, bacaha wax iibsiga, baakadaha wax soo saarka beeraha, iwm. Samaynta bac caag ah oo u muuqata mid fudud ayaa noqon karta mid aad u dhib badan. Habka wax soo saarka bacda PE waxaa ka mid ah qaybo caag ah - isku darka kala dirida kulaylka - fidinta extrusion - daaweynta elektaroonigga ah -; Shandad PE inta badan waa hababka dhawrka ah ee kor ku xusan, oo la fududeeyay ka dib saddexda habraac: filim afuufaya ------ daabacaadda ------ samaynta bacaha.
Habka daabacaadda bacda PE waa in fiiro gaar ah loo yeelo maxaa?
Polyethylene, iska caabin heerkul hooseeya oo heersare ah (isticmaal heerkulka ilaa -70 ~-100), xasiloonida kiimikada, inta badan aashitada iyo nabaad guurka alkali (oo leh dulqaad la'aanta oxidizing), dareeraha guud ee heerkulka qolka, nuugista hoose, waxqabadka korantada wanaagsan. Si kastaba ha ahaatee, polyetylenku waxay u nugul yihiin walaaca deegaanka (ficil kiimiko iyo farsamo) iyo liidata gabowga kulaylka. Astaamaha polyetylenku way ku kala duwan yihiin noocyada, inta badan waxay ku xidhan tahay qaabka molecular iyo cufnaanta. Alaabooyinka cufnaanta kala duwan (0.91-0.96 G/CM3) waxaa lagu heli karaa habab wax soo saar oo kala duwan. Polyethylene waxa lagu farsamayn karaa habab heerkulbeeg ah oo caadi ah (fiiri habka balaastigga).
Maxay yihiin qoraallada la xiriira habka si faahfaahsan hoos?
Habka afuufista filimka waa in fiiro gaar ah loo yeelo qodobada soo socda:
1. Qiyaasta alaabta ceeriin: sida waafaqsan shuruudaha kala duwan ee bacaha PE, diyaarinta qaybaha kala duwan ee alaabta ceeriin. Tusaale ahaan: anti-static, anti- miridhku, yaraynta, conductivity korontada, biodegradation iyo shuruudaha kale, ku dar noocyo kala duwan oo lagu daro kaabayaal ah tusaale ahaan: in la isticmaalo casaan, madow, midab iyo midabyo kale, ku dar noocyo kala duwan oo koofiyadaha midabka. Marka loo eego hufnaanta, adkaanta, xoogga jeexjeexa, soo saarista faakuumka iyo shuruudaha kale, beddel noocyo kala duwan oo noocyo ah ama noocyada alaabta PE. Tusaale ahaan: marka loo eego shuruudaha gaarka ah, xoogga saar shuruudaha hufnaanta sare, jeexjeexa xooggan, furfurnaanta wanaagsan, si loo beddelo saamiga alaabta ceeriin.
2.habka afuufaya daabacaadda filimka, baahida loo qabo farsamaynta elektarooniga ah, waqtigan si aad fiiro gaar ah u yeelato xoogga farsamaynta elektaroonigga ah, si loo hubiyo in PE-da durbaanka qalabka elektiroonigga ah ee qalabka elektiroonigga ah (DAYIN) oo ku filan si loo hubiyo xajinta khad.
3.in geeddi-socodka afuufista filimka, sida waafaqsan shuruudaha gaarka ah ee filimka, hal furin, furitaan labajibbaaran, isku laabma, waxyeellada cadaadiska, dhejinta, ballaarinta iyo hawlgallada kale.
Habka daabacaadda bacda PE waa in fiiro gaar ah loo yeesho arrimaha soo socda:
1.khad daabacan: khad biyo ku salaysan, khad degdeg ah oo qallajin, khad aan la arki karin, midab beddela, khad ka hortagga been-abuurka, khad wax-is-daba-marin, khad elektaroonig ah oo hooseeya, khad matte ah iyo astaamaha kale ee khad waa khad.
2. Saxanka daabacaadda: iyadoo la raacayo shuruudaha ganaaxa ee nuxurka daabacaadda, daabacaadda gravure ( saxan naxaas ah) daabacaadda iyo flexography (offset) ayaa la isticmaalaa. Labadan hab ee daabacaadda ee kala duwan.
3. Marka loo eego kakanaanta nuxurka daabacaadda iyo kakanaanta midabka, dooro habka daabacaadda: daabacaadda monochrome, daabacaadda laba-geesoodka ah ee monochrome, daabacaadda midabka hal-dhinac ah, daabacaadda midabka laba-geesoodka ah.
4. Marka loo eego shuruudaha gaarka ah ee qaababka daabacaadda, marka loo eego sifooyinka midabaynta, ka-hortagga been-abuurka, korantada korantada, dhejiska iyo wixii la mid ah, dooro khad kala duwan ama wax lagu daro.
Waqtiga boostada: Mar-03-2022