Iplastiki isetyenziswa kakhulu kumashishini ahlukeneyo ngenxa yokuguquguquka kwayo kunye neendleko eziphantsi. Nangona kunjalo, ingxaki eqhelekileyo ngeeplastiki kukuba zivame ukutyheli okanye zitshintshe umbala ngokuhamba kwexesha ngenxa yokuvezwa kukukhanya nobushushu. Ukucombulula le ngxaki, abavelisi badla ngokufaka izinto zokongeza ezibizwa ngokuba zii-optical brighteners kwiimveliso zeplastiki ukuze ziphucule inkangeleko yazo.

Kwaziwa njengeizikhanyisi zamehlo, i-optical brighteners yi-compounds efunxa ukukhanya kwe-ultraviolet kwaye ikhupha ukukhanya okuluhlaza okwesibhakabhaka, inceda ukufihla i-yellowing okanye i-discoloration kwiiplastiki. Ezi arhente zimhlophe zisebenza ngokuguqula imisebe ye-UV engabonakaliyo ibe kukukhanya okuluhlaza okubonakalayo, okwenza iplastiki ibonakale imhlophe kwaye iqaqambile emehlweni abantu.

Enye yezona zinto zisetyenziswa ngokuqhelekileyo zikhanyisa i-optical kwiiplastiki yi-organic compound ebizwa ngokuba yi-triazine-stilbene derivative. Le khompawundi iyasebenza kakhulu ekufunxeni imitha ye-UV kunye nokukhupha ukukhanya okuluhlaza okwesibhakabhaka, iyenza ilungele ukuphucula inkangeleko yeeplastiki.

Iplastikiizikhanyisi zamehloziza kwiintlobo ezininzi, kubandakanywa umgubo, ulwelo kunye nee-masterbatches, ezingamasuntswana agxininisiweyo asasazwe kwintlaka yokuthwala. Ezi fom ezahlukeneyo zinokufakwa ngokulula kwinkqubo yokwenziwa kweplastiki, ukuqinisekisa ukuba i-brightener isasazwa ngokulinganayo kuyo yonke imveliso egqityiweyo.

Ukongeza ekuphuculeni ukubonakala okubonakalayo kweeplastiki, i-optical brighteners inika ezinye izibonelelo, ezifana nokubonelela ngokhuseleko lwe-UV kunye nokuphucula ukusebenza ngokubanzi kwezinto. Ngokufunxa imitha ye-UV eyingozi, ii-whiteners zinceda ukwandisa ubomi beplastiki ngokuthintela ukuthotywa kunye nokuba tyheli okubangelwa kukuvezwa kwe-UV.

Ukwengeza,izikhanyisi zamehloinokudibaniswa nezinye izongezo, ezifana ne-UV stabilizers kunye ne-antioxidants, ukwenza iimveliso zeplastiki ezixhathisayo kwizinto ezisingqongileyo kunye nokugcina ukubonakala kwazo ngexesha.

Xa zisetyenziswe ngokuchanekileyo, izikhanyisi zeplastiki ezibonakalayo zinokuphucula kakhulu umgangatho kunye nexabiso leemveliso zeplastiki kumashishini amaninzi kubandakanya ukupakishwa, iimpahla zabathengi, iimoto kunye nokwakha. Ngokubandakanya ezi zongezo kwiindlela zabo zeplastiki, abavelisi banokuqinisekisa ukuba iimveliso zabo zigcina umtsalane obonakalayo kunye nokuqina nasemva kokuvezwa ixesha elide ekukhanyeni kunye neemeko zokusingqongileyo.

Kubalulekile ukuqaphela, nangona kunjalo, ukuba ukhetho kunye nogxininiso lweizikhanyisi zamehlokufuneka ilinganiswe ngononophelo ukufezekisa umphumo oyifunayo ngaphandle kokuchaphazela kakubi ukusebenza okanye iimpawu zeplastiki. Ukusetyenziswa ngokugqithisileyo kwe-whitener kunokubangela ukubonakala oku bluish kakhulu okanye okungaqhelekanga, ngelixa ukusetyenziswa ngaphantsi kungase kungasebenzi ekufihleni ukuguga.

Isishwankathelo, izikhanyisi zamehlo zidlala indima ebalulekileyo ekuphuculeni ukubonakala kunye nokusebenza kweeplastiki. Njengoko imfuno ekumgangatho ophezulu, iimveliso zeplastiki ezibukekayo ziqhubeka zikhula, ukusetyenziswa kweizikhanyisi zamehlokulindeleke ukuba kunyuke, kuqhube ukuqamba izinto ezintsha kunye nokuqhubela phambili kwibala lezongezo zeplastiki. Ngokusebenzisa izibonelelo zala ma-compounds, abavelisi banokudala iiplastiki ezingabonakali nje zibhetele, kodwa zihlala ixesha elide kwaye zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala zihlala khona.