Ho reka thepa ea ho paka | Mokhoa oa ho khetha lihlahisoa tsa polasetiki tsa boleng bo holimo

Khetho le boleng ba lisebelisoa ke senotlolo sa ho netefatsa boleng ba li-hoses, tse tla ama ka ho toba ts'ebetso le tšebeliso ea ho qetela ea li-hoses. Lisebelisoa tsa li-hoses tsa polasetiki li kenyelletsa polyethylene (bakeng sa 'mele oa tube le hlooho ea tube), polypropylene (sekoahelo sa tube), masterbatch, resin ea mokoallo, enke ea khatiso, varnish, joalo-joalo Ka hona, khetho ea thepa leha e le efe e tla ama boleng ba hose ka ho toba. Leha ho le joalo, khetho ea thepa e boetse e itšetlehile ka lintlha tse kang litlhoko tsa bohloeki, thepa ea thibelo (litlhoko tsa oksijene, mouoane oa metsi, ho boloka monko o monate, joalo-joalo), le ho hanyetsa lik'hemik'hale.

Khetho ea lipeipi: Taba ea pele, lisebelisoa tse sebelisoang li tlameha ho fihlela litekanyetso tse loketseng tsa bohloeki, 'me lintho tse kotsi joalo ka litšepe tse boima le lisebelisoa tsa fluorescent li lokela ho laoloa ka har'a mefuta e behiloeng. Mohlala, bakeng sa li-hoses tse romelloang United States, polyethylene (PE) le polypropylene (PP) tse sebelisitsoeng li tlameha ho kopana le US Food and Drug Administration (FDA) standard 21CFR117.1520.

Litšitiso tsa thepa: Haeba litaba tsa sephutheloana sa lik'hamphani tsa letsatsi le letsatsi tsa lik'hemik'hale e le lihlahisoa tse amehang haholo ho oksijene (joalo ka litlolo tse ling tse soeufatsang) kapa monko o monate haholo (joalo ka oli ea bohlokoa kapa oli e itseng, acid, matsoai le letsoai. lik'hemik'hale tse ling tse senyang), li-tubes tse kopantsoeng ka mahlakoreng a mahlano li lokela ho sebelisoa ka nako ena. Hobane matla a oksijene a kenang ka har'a tube e nang le likarolo tse hlano (polyethylene / adhesive resin / EVOH / adhesive resin / polyethylene) ke li-unit tsa 0.2-1.2, athe ho kenella ha oksijene ea tube e tloaelehileng ea polyethylene single-layer ke li-unit tse 150-300. Ka nako e itseng, sekhahla sa tahlehelo ea boima ba tube e kopantsoeng e nang le ethanol e fokotseha ka makhetlo a mangata ho feta ea tube ea lera le le leng. Ho feta moo, EVOH ke ethylene-vinyl alcohol copolymer e nang le thepa e ntle ea thibelo le ho boloka monko o monate (botenya ba 15-20 microns ke bona bo loketseng ka ho fetisisa).

Boima ba lintho tse bonahalang: Lik'hamphani tsa lik'hemik'hale tsa letsatsi le letsatsi li na le litlhoko tse fapaneng bakeng sa ho satalla ha li-hoses, joale u ka fumana boima bo lakatsehang joang? Polyethylene e atisang ho sebelisoa liphaepheng haholo-holo ke polyethylene e tlaase-tlaase, polyethylene ea boleng bo phahameng, le polyethylene e nang le linear low-density polyethylene. Har'a bona, ho satalla ha polyethylene e phahameng ho molemo ho feta ea polyethylene e tlaase-tlaase, kahoo ho thatafala ho lakatsehang ho ka finyelloa ka ho lokisa karo-karolelano ea polyethylene / low-density polyethylene.

Lintho tse hanyetsanang le lik'hemik'hale: Polyethylene e phahameng haholo e na le khanyetso e ntle ea lik'hemik'hale ho feta polyethylene e tlaase.

Ho hanyetsa boemo ba leholimo ba thepa: Ho laola ts'ebetso ea nako e khuts'oane kapa ea nako e telele ea hose, lintlha tse kang ponahalo, ho hanyetsa khatello / ho theoha, matla a ho tiisa, khatello ea khatello ea tikoloho (boleng ba ESCR), monko o monate le tahlehelo ea metsoako e sebetsang e hloka. ho nahanoa.

Khetho ea masterbatch: Masterbatch e bapala karolo ea bohlokoa taolong ea boleng ba hose. Ka hona, ha u khetha masterbatch, k'hamphani ea basebelisi e lokela ho nahana hore na e na le dispersibility e ntle, filtration le botsitso ba mocheso, ho hanyetsa boemo ba leholimo le ho hanyetsa sehlahisoa. Har'a bona, ho hanyetsa sehlahisoa sa masterbatch ho bohlokoa haholo nakong ea tšebeliso ea hose. Haeba masterbatch e sa lumellane le sehlahisoa, 'mala oa masterbatch o tla fallela sehlahisoa,' me liphello li tebile haholo. Ka hona, lik'hamphani tsa letsatsi le letsatsi tsa lik'hemik'hale li lokela ho leka botsitso ba lihlahisoa tse ncha le li-hoses (liteko tse potlakileng tlas'a maemo a boletsoeng).

Mefuta ea li-varnish le litšobotsi tsa tsona tse fapaneng: Li-varnish tse sebelisoang ka har'a hose li arotsoe ka mofuta oa UV le mofuta oa ho omisa mocheso, 'me li ka aroloa ka holim'a metsi a khanyang le a matte ho latela ponahalo. Varnish ha e fane feela ka liphello tse ntle tsa pono, empa hape e sireletsa lintho tse ka hare 'me e na le phello e itseng ea ho thibela oksijene, mouoane oa metsi le monko o monate. Ka kakaretso, varnish e omisang mocheso e na le mamarelo a matle ho setempe se chesang se latelang le khatiso ea sekirini sa silika, athe varnish ea UV e na le bo phatsimang bo betere. Likhamphani tsa lik'hemik'hale tsa letsatsi le letsatsi li ka khetha li-varnish tse nepahetseng ho latela litšobotsi tsa lihlahisoa tsa tsona. Ho phaella moo, varnish e phekotsoeng e lokela ho ba le sekhomaretsi se setle, sebaka se boreleli ntle le sekoti, ho hanyetsa ho phutha, ho hanyetsa ho apara, ho hanyetsa kutu, 'me ha ho na mebala nakong ea polokelo.

Litlhoko tsa 'mele oa tube / hlooho ea tube: 1. Bokaholimo ba 'mele oa tube e lokela ho ba boreleli, ntle le li-streaks, li-scratches, mathata, kapa deformation ea shrinkage. 'Mele oa tube o lokela ho otloloha mme o se ke oa kobeha. Botenya ba lebota la tube bo lokela ho ba bo ts'oanang. Botenya ba lebota la tube, bolelele ba tube, le mamello ea bophara bo lokela ho ba ka har'a sebaka se boletsoeng;

2. Hlooho ea tube le 'mele oa tube oa hose o lokela ho kopanngoa ka thata, mohala oa ho kopanya o lokela ho ba o makhethe le o motle,' me bophara bo lokela ho ba junifomo. Hlooho ea tube ha ea lokela ho kheloha ka mor'a ho hokahanya; 3. Hlooho ea tube le sekoahelo sa tube se lokela ho lumellana hantle, se phunye le ho tsoa hantle, 'me ho se ke ha e-ba le ho thella ka har'a sebaka se boletsoeng,' me ha hoa lokela ho ba le metsi kapa moea o lutla pakeng tsa tube le sekoahelo;

Litlhoko tsa khatiso: Hose ho sebetsa hangata ho sebelisa khatiso ea lithographic offset (OFFSET), 'me boholo ba enke e sebelisoang ke UV-omisitsoeng, eo hangata e hlokang ho khomarela ka matla le ho hanyetsa ho fetoha ha mebala. 'Mala oa khatiso o lokela ho ba ka har'a botebo bo boletsoeng, sebaka sa overprint se lokela ho nepahala, kheloha e be ka hare ho 0.2mm,' me fonte e be e feletseng le e hlakileng.

Litlhoko tsa likatiba tsa polasetiki: Likatiba tsa polasetiki hangata li entsoe ka ente ea polypropylene (PP). Li-caps tsa polasetiki tsa boleng bo phahameng ha lia lokela ho ba le mela e hlakileng ea ho fokotseha le ho benya, mela e boreleli ea hlobo, litekanyo tse nepahetseng, le ho lekana hantle le hlooho ea tube. Ha lia lokela ho baka tšenyo ea sebopeho joalo ka mapheo a brittle kapa mapetsong nakong ea ts'ebeliso e tloaelehileng. Ka mohlala, ha matla a ho bula a le ka har'a marang-rang, flip cap e lokela ho khona ho mamella mameno a fetang 300 ntle le ho robeha.