Umbhobho, isixhobo sokupakisha esilula nesingabizi kakhulu, sisetyenziswa kakhulu kwicandelo leekhemikhali zemihla ngemihla kwaye sithandwa kakhulu. Umbhobho olungileyo awunakukhusela kuphela umxholo, kodwa uphucula nenqanaba lemveliso, ngaloo ndlela uphumelela abathengi abaninzi kwiinkampani zeekhemikhali zemihla ngemihla. Ke, kwiinkampani zeekhemikhali zemihla ngemihla, indlela yokukhethaiipayipi zeplastiki ezikumgangatho ophezuluezifanelekileyo kwiimveliso zabo?
Ukukhethwa kunye nomgangatho wezixhobo zezona zinto zibalulekileyo ekuqinisekiseni umgangatho weepayipi, nto leyo eya kuchaphazela ngokuthe ngqo ukucutshungulwa kunye nokusetyenziswa kokugqibela kweepayipi. Izinto zepayipi zeplastiki ziquka i-polyethylene (yomzimba wetyhubhu kunye nentloko yetyhubhu), i-polypropylene (isiciko setyhubhu), i-masterbatch, i-barrier resin, i-inki yokuprinta, i-varnish, njl. Ke ngoko, ukukhethwa kwayo nayiphi na into kuya kuchaphazela ngokuthe ngqo umgangatho wepayipi. Nangona kunjalo, ukukhethwa kwezinto kuxhomekeke kwizinto ezifana neemfuno zococeko, iimpawu zokuthintela (iimfuno zeoksijini, umphunga wamanzi, ukugcinwa kwevumba elimnandi, njl. njl.), kunye nokumelana neekhemikhali.
Ukukhethwa kwemibhobho: Okokuqala, izinto ezisetyenzisiweyo kufuneka zihlangabezane nemigangatho efanelekileyo yococeko, kwaye izinto ezinobungozi ezifana neentsimbi ezinzima kunye nee-fluorescent agents kufuneka zilawulwe ngaphakathi koluhlu olumiselweyo. Umzekelo, kwiipayipi ezithunyelwa eMelika, i-polyethylene (PE) kunye ne-polypropylene (PP) ezisetyenzisiweyo kufuneka zihlangabezane nomgangatho we-US Food and Drug Administration (FDA) 21CFR117.1520.
Iimpawu zomqobo wezinto: Ukuba umxholo wokupakisha kweenkampani zeekhemikhali zemihla ngemihla ziimveliso ezithile ezibuthathaka kakhulu kwioksijini (ezifana nezinye izinto zokuthambisa ezimhlophe) okanye ivumba litshintsha kakhulu (ezifana neeoyile ezibalulekileyo okanye ezinye iioyile, iiasidi, iityuwa kunye nezinye iikhemikhali ezibolayo), kufuneka kusetyenziswe iityhubhu ezidityanisiweyo ezinamalayelo amahlanu ngeli xesha. Ngenxa yokuba ukuvuleka kweoksijini kwityhubhu edityanisiweyo enalayelo mahlanu (i-polyethylene/i-adhesive resin/EVOH/i-adhesive resin/polyethylene) ziiyunithi eziyi-0.2-1.2, ngelixa ukuvuleka kweoksijini kwityhubhu eqhelekileyo ye-polyethylene enye enalayelo liyiyunithi eziyi-150-300. Kwixesha elithile, izinga lokulahlekelwa bubunzima betyhubhu edityanisiweyo equlethe i-ethanol liphantsi ngokuphindwe kalishumi kuneletyhubhu edityanisiweyo. Ukongeza, i-EVOH yi-ethylene-vinyl alcohol copolymer eneempawu zomqobo ezintle kunye nokugcinwa kwevumba (isiphumo esingcono sifumaneka xa ubukhulu buyi-15-20 microns).
Ukuqina kwezinto: Iinkampani zeekhemikhali zemihla ngemihla zinemfuno ezahlukeneyo zokuqina kweepayipi, ngoko ke ungayifumana njani i-stain efunekayo? I-polyethylene esetyenziswa kakhulu kwiipayipi yi-polyethylene enoxinano oluphantsi, i-polyethylene enoxinano oluphezulu, kunye ne-polyethylene enoxinano oluphantsi oluthe ngqo. Phakathi kwazo, ukuqina kwe-polyethylene enoxinano oluphezulu kungcono kunokwe-polyethylene enoxinano oluphantsi, ngoko ke ukuqina okufunekayo kunokufezekiswa ngokulungelelanisa umlinganiselo we-polyethylene enoxinano oluphezulu/i-polyethylene enoxinano oluphantsi.
Ukuxhathisa kweekhemikhali kwizinto: I-polyethylene enoxinano oluphezulu inokumelana okungcono kweekhemikhali kune-polyethylene enoxinano oluphantsi.
Ukumelana nemozulu kwezinto: Ukulawula ukusebenza kwexesha elifutshane okanye elide kweepayipi, izinto ezifana nenkangeleko, ukumelana noxinzelelo/ukusebenza kokuwa, amandla okutywina, ukumelana nokuqhekeka koxinzelelo lokusingqongileyo (ixabiso le-ESCR), ivumba elimnandi kunye nokulahleka kwezithako ezisebenzayo kufuneka kuqwalaselwe.
Ukukhethwa kwe-masterbatch: I-Masterbatch idlala indima ebalulekileyo kulawulo lomgangatho weepayipi. Ke ngoko, xa kukhethwa i-masterbatch, iinkampani zabasebenzisi kufuneka ziqwalasele ukuba ingaba inokusasazeka kakuhle, ukuhluzwa kunye nozinzo lobushushu, ukumelana nemozulu kunye nokumelana nemveliso. Phakathi kwazo, ukumelana nemveliso ye-masterbatch kubaluleke kakhulu ngexesha lokusetyenziswa kweepayipi. Ukuba i-masterbatch ayihambelani nemveliso ekuyo, umbala we-masterbatch uya kufudukela kwimveliso, kwaye iziphumo zibi kakhulu. Ke ngoko, iinkampani zeekhemikhali zemihla ngemihla kufuneka zivavanye ukuzinza kweemveliso ezintsha kunye neepayipi (uvavanyo olukhawulezisiweyo phantsi kweemeko ezithile).
Iintlobo zevarnish kunye neempawu zazo: Ivarnish esetyenziselwa iipayipi yahlulwe ngohlobo lwe-UV kunye nohlobo lokomisa ubushushu, olunokwahlulwa lube ngumphezulu okhanyayo kunye nomphezulu ongabonakaliyo. Ivarnish ayiboneleli nje kuphela ngemiphumo emihle yokubona, kodwa ikwakhusela umxholo kwaye inefuthe elithile lokuthintela ioksijini, umphunga wamanzi kunye nevumba elimnandi. Ngokubanzi, ivarnish yohlobo lokomisa ubushushu inamathela kakuhle kwi-hot stamping elandelayo kunye nokuprintwa kwesikrini sesilika, ngelixa ivarnish ye-UV ikhanya ngcono. Iinkampani zeekhemikhali zemihla ngemihla zinokukhetha ivarnish efanelekileyo ngokweempawu zeemveliso zazo. Ukongeza, ivarnish evunyiweyo kufuneka ibe nokunamathela okuhle, umphezulu ogudileyo ongenamingxunya, ukumelana nokugoba, ukumelana nokuguguleka, ukumelana nokugqwala, kunye nokungabikho kombala ngexesha lokugcina.
Iimfuneko zomzimba wetyhubhu/intloko yetyhubhu:
1. Umphezulu womzimba wetyhubhu kufuneka ube mtyibilizi, ungabi namigca, imikrwelo, ukuxinana, okanye ukuguquka kokuncipha. Umzimba wetyhubhu kufuneka uthe tye kwaye ungagobi. Ubukhulu bodonga lwetyhubhu kufuneka bufane. Ubukhulu bodonga lwetyhubhu, ubude betyhubhu, kunye nokunyamezelana kobubanzi kufuneka kube ngaphakathi koluhlu oluchaziweyo;
2. Intloko yetyhubhu kunye nomzimba wetyhubhu yombhobho kufuneka ziqhagamshelwe ngokuqinileyo, umgca woqhagamshelo kufuneka ucoceke kwaye ube mhle, kwaye ububanzi bufanele bufane. Intloko yetyhubhu akufuneki ijijeke emva koqhagamshelo;
3. Intloko yetyhubhu kunye nesigqubuthelo setyhubhu kufuneka zihambelane kakuhle, zingene ziphume kakuhle, kwaye akufuneki kubekho ukutyibilika ngaphakathi koluhlu lwe-torque oluchaziweyo, kwaye akufuneki kubekho ukuvuza kwamanzi okanye umoya phakathi kwetyhubhu kunye nesigqubuthelo;
Iimfuno zokuprinta: Ukucubungula ipayipi kudla ngokusebenzisa ukuprinta kwe-lithographic offset (OFFSET), kwaye uninzi lwe-inki esetyenziswayo yomiswe yi-UV, nto leyo edla ngokufuna ukunamathela okuqinileyo kunye nokumelana nokutshintsha kombala. Umbala wokuprinta kufuneka ube ngaphakathi kobubanzi obuchaziweyo, indawo yokuprinta ngaphezulu kufuneka ichaneke, ukuphambuka kufanele kube ngaphakathi kwe-0.2mm, kwaye ifonti kufuneka igqibelele kwaye icace.
Iimfuno zeekhaphu zeplastiki: Iikhaphu zeplastiki zihlala zenziwe nge-polypropylene (PP) injection molding. Iikhaphu zeplastiki ezisemgangathweni ophezulu akufuneki zibe nemigca ecacileyo yokushwabana kunye nokukhazimla, imigca yesikhunta egudileyo, ubukhulu obuchanekileyo, kunye nokulingana okuthambileyo nentloko yetyhubhu. Akufanele zibangele umonakalo wesakhiwo njengemifantu ebuthathaka okanye imifantu ngexesha lokusetyenziswa okuqhelekileyo. Umzekelo, xa amandla okuvula engaphakathi, i-flip cap kufuneka ikwazi ukumelana nemifantu engaphezu kwama-300 ngaphandle kokuqhekeka.
Ndikholelwa ukuba ukuqala kwezi nkalo zingasentla, uninzi lweenkampani zeekhemikhali zemihla ngemihla kufuneka zikwazi ukukhetha iimveliso zokupakisha iipayipi ezikumgangatho ophezulu.
Ixesha lokuthumela: Julayi-12-2024