Iindidi zeNkqubo yePlastiki yePlastiki

Inkqubo yeplastiki ye-extrusion ihlelwa ngokubanzi kwiintlobo ezisixhenxe ezahlukeneyo ngokuxhomekeke kwizicelo ezithile.

(a) Ishiti/Ukukhutshwa kwefilimu

Kule nkqubo ye-extrusion, imathiriyeli yeplastiki etyhidiweyo ikhutshwa ngokufa kweflethi.Imiqulu yokupholisa isetyenziselwa ukumisela ubukhulu beshiti / ifilimu kunye nokwakheka kwayo komphezulu.Ubunzima bephepha bunokufumaneka kwi-0.2 ukuya kwi-15 mm.Icwecwe elicekethekileyo elisicaba okanye ifilimu yezinto zeplastiki zingenziwa.Ngokuqhelekileyo, iplastiki ye-polystyrene isetyenziswa njengento ekrwada kwinkqubo ye-extrusion sheet.

(b) Ukukhutshwa kwefilimu evuthelweyo

Kwinkqubo yefilimu evuthelweyo, ukufa kufana ne-cylinder ethe nkqo eneprofayili yesetyhula.Iplastiki etyhidiweyo itsalwa phezulu ukusuka kwidayiri ngeperi ye nip rollers.Umoya ocinezelweyo usetyenziselwa ukufunxa ityhubhu.Ukujikeleza idiyizi, i-air-ring ifakwe.Injongo yeringi yomoya kukupholisa ifilimu njengoko ihambela phezulu.Embindini wokufa, kukho i-inlet yomoya apho umoya ocinezelweyo unokunyanzeliswa kumbindi weprofayili yesetyhula, kwaye wenze i-bubble.Icandelo eligqithisiweyo lesetyhula linokunyuswa ngamaxesha angama-2-3 obubanzi bokufa.Amaqamza adilikile ngoncedo lwepleyiti yokuwa.I-nip rolls yenza iqamza libe ngumaleko ophindwe kabini wefilimu ebizwa ngokuba yi-layflat.Ubunzima bodonga lwefilimu bunokulawulwa ngokutshintsha isantya se-nip rollers.I-layflat inokuxutywa ngendlela yomqulu okanye inqunywe kwiimilo ezifunwayo.Icala elisezantsi le-layflat litywinwe ngokusetyenziswa kobushushu, kwaye linqunyulwe ngapha nangapha ukuya kwifomu yokuvula;kungoko ingasetyenziselwa ukwenza ingxowa yeplastiki.Ububanzi bokufa bunokwahluka ukusuka kwi-1 ukuya kwi-300 yeesentimitha.Ngokuqhelekileyo, iplastiki ye-polyurethane isetyenziswa kule nkqubo.

(c) Ngaphezulu kweBhatyi Extrusion

Oku kukwabizwa ngokuba yinkqubo yokugquma ucingo.Kule nkqubo, ucingo olungenanto lutsalwa embindini wedayisi.Kukho iintlobo ezimbini ezahlukeneyo zezixhobo ze-extrusion ezisetyenziselwa ukugquma phezu kocingo, oko kukuthi, uxinzelelo okanye ukufakwa kwebhatyi.Ukuba unxibelelwano olusondeleyo okanye ukunamathela kuyafuneka phakathi kocingo kunye neengubo, isixhobo soxinzelelo siyasetyenziswa.Ukuba ukunamathela akufunwa, i-jacketing tooling isetyenziswa.Ukuze isixhobo soxinzelelo, ucingo luhlehliswa ngaphakathi kwifa, apho ludibana neplastiki etyhidiweyo kuxinzelelo oluphezulu kakhulu.Kwizixhobo zejacket, ucingo luya kwandiswa kwaye iplastiki etyhidiweyo iya kwenza isigqubuthelo kwintambo emva kokufa.Ucingo olungenanto lutyiswa ngedayizi kwaye aludibani ngqo neplastiki etyhidiweyo de luyishiye idayizi.Umehluko omkhulu phakathi kwejacket kunye nesixhobo soxinzelelo yindawo yocingo ngokumalunga nokufa.

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(d) Ukukhutshwa kweetyhubhu

Kule nkqubo, iplastiki etyhidiweyo extruded ngokusebenzisa kufa kunye amacandelo umnqamlezo umgongxo akhiwa ngokubeka mandrel ngaphakathi die.Iityhubhu enemingxuma ezininzi zingenziwa kwakhona izicelo ezithile, ngokubeka inani mandrels embindini die.

(e) I-Coextrusion

I-Coextrusion yinkqubo ye-extrusion yokwenza iileya ezininzi zezinto ngexesha elinye.Isetyenziselwa ukusebenzisa umaleko omnye okanye ngaphezulu ngaphezulu kwezinto ezisisiseko ukufumana iipropati ezithile ezifana nokufunxa i-ultraviolet, i-grip, i-matte surface, kunye ne-energy reflection, ngelixa i-base material ifaneleka ngakumbi kwezinye izicelo, umz. ukuxhathisa impembelelo kunye nokusebenza kwesakhiwo.Isenokusetyenziswa kuyo nayiphi na inkqubo enje ngefilim evuthelweyo, ijacket ngaphezulu kwebhatyi, iityhubhu, sheet/film extrusion.Kule nkqubo, ii-extruders ezimbini okanye ngaphezulu zisetyenziselwa ukuhambisa izinto ezidityanisiweyo zibe yifa enye ekhupha izinto kwimilo efunekayo.Ubukhulu bomaleko bulawulwa ngesantya kunye nobukhulu be-extruders ngabanye abahambisa izinto.

(f) I-Extrusion Coating

I-extrusion coating isetyenziselwa ukwenza uluhlu olongezelelweyo kwi-rollstock ekhoyo yephepha, i-foil okanye ifilimu.Ngokomzekelo, ukuphucula ukuchasana kwamanzi kwephepha le-polyethylene lisetyenziswa.Ukusetyenziswa kwe-extrusion coating kukupakishwa kolwelo, iphepha lokufota, iimvulophu, ukufakwa kweengxowa zokufaka izichumisi kunye nokupakishwa kwezonyango.Ngokuqhelekileyo, i-polyethylene kunye ne-polypropylene zisetyenziswa.