Bacda PE waa bac caadi ah oo ku jirta nolol maalmeedkeenna, oo loo isticmaalo dhammaan noocyada baakadaha miraha iyo khudaarta, bacaha wax iibsiga, baakadaha wax soo saarka beeraha, iwm. Samaynta bac balaastig ah oo u muuqda mid fudud waxay noqon kartaa mid aad u dhib badan. Habka soo saarista bacaha PE waxaa ka mid ah walxaha balaastikada ah - isku darka kala dirida kulaylka - fidinta fidinta - daawaynta elektaroonigga ah -; Bacda PE inta badan waa hababka kor ku xusan, oo la fududeeyay ka dib saddexda habraac: daabacaadda filimka --------- sameynta bacaha.
Habka daabacaadda bacaha PE waa in fiiro gaar ah loo yeesho maxaa?
Polyethylene, iska caabin heer hoose oo aad u fiican (isticmaal heerkulka ilaa -70 ~ -100), xasilloonida kiimikada, nabaad-guurka aashitada iyo alkali badan (iyadoo la adeegsanayo u adkeysiga oksaydhka), aan ku milmin dareerayaasha guud heerkulka qolka, nuugista yar, waxqabadka dahaarka korontada oo wanaagsan. Si kastaba ha ahaatee, polyethylene waxay u nugul tahay cadaadiska deegaanka (ficil kiimiko iyo farsamo) waxayna ku liidataa gabowga kulaylka. Astaamaha polyethylene way kala duwan yihiin noocyada ilaa noocyada, inta badan waxay ku xiran tahay qaab-dhismeedka molecular iyo cufnaanta. Badeecadaha leh cufnaanta kala duwan (0.91-0.96 G/CM3) waxaa lagu heli karaa habab wax soo saar oo kala duwan. Polyethylene waxaa lagu farsameyn karaa hababka caadiga ah ee sameynta thermoplastic (fiiri habka farsamaynta balaastikada).
Maxay yihiin qoraallada la xiriira habka si faahfaahsan hoos ku qoran?
Habka afuufinta filimka waa in fiiro gaar ah loo yeesho qodobbada soo socda:
1. Saamiga walxaha ceeriin ah: sida waafaqsan shuruudaha kala duwan ee bacaha PE, diyaarinta saamiyo kala duwan oo walxaha ceeriin ah. Tusaale ahaan: ka-hortagga-istaaga, ka-hortagga miridhku, yaraynta, gudbinta korontada, bayoolojiga iyo shuruudo kale, ku dar noocyo kala duwan oo lagu daro waxyaabo dheeraad ah tusaale ahaan: si aad u isticmaasho casaan, madow, midab iyo midabyo kale, ku dar noocyo kala duwan oo midabyo ah. Sida waafaqsan hufnaanta, adkaanta, xoogga jeexjeexa, soo saarista faakuumka iyo shuruudaha kale, beddel noocyo kala duwan oo noocyo ah ama noocyo ah oo walxaha PE ah. Tusaale ahaan: sida waafaqsan shuruudaha gaarka ah, xoogga saar shuruudaha hufnaanta sare, jeexjeexa xooggan, furfurnaanta wanaagsan, si loo beddelo saamiga walxaha ceeriin ah.
2. habka daabacaadda filimada, baahida loo qabo farsamaynta elektaroonigga ah, waqtigan xaadirka ah in fiiro gaar ah loo yeesho xoogga farsamaynta elektaroonigga ah, si loo hubiyo in qalabka durbaanka PE ee xoogga farsamaynta elektaroonigga ah (DAYIN) uu ku filan yahay inuu hubiyo isku-xidhka khad.
3. habka loo afuufayo filimka, iyadoo la raacayo shuruudaha gaarka ah ee filimka, furitaan keli ah, furitaan labanlaab ah, laablaabid, burburka barta cadaadiska, embossing, ballaarinta iyo hawlgallo kale.
Habka daabacaadda bacaha PE waa inuu fiiro gaar ah u yeeshaa arrimaha soo socda:
1. khad daabacan: khad biyo ku salaysan, khad si dhakhso ah u qallajinaysa, khad aan la arki karin, khad midab beddela, khad ka hortagga been abuurka, khad soo-jeedin, khad gudbin, khad elektaroonig ah oo hooseeya, khad matte ah iyo astaamo kale oo khad ah waa khad.
2. Saxanka daabacaadda: iyadoo la raacayo shuruudaha wanaagsan ee daabacaadda, daabacaadda gravure (saxanka naxaasta ah) iyo daabacaadda flexography (offset) ayaa la isticmaalaa. Labadan hab ee daabacaadda ee kala duwan.
3. Sida ku cad kakanaanta daabacaadda iyo kakanaanta midabka, dooro habka daabacaadda: daabacaadda monochrome, daabacaadda monochrome-ga laba-geesoodka ah, daabacaadda midabka hal-dhinac ah, daabacaadda midabka laba-dhinac ah.
4. Sida waafaqsan shuruudaha gaarka ah ee qaababka daabacaadda, iyadoo loo eegayo sifooyinka midab-beddelidda, ka-hortagga been-abuurka, korantada, dhejisyada iwm, dooro khad ama waxyaabo lagu daro oo kala duwan.
Waqtiga boostada: Maarso-03-2022
