Izindaba

Kuyini ukwethulwa kwepulasitikifama-ilms?

Amafilimu epulasitiki amelela isigaba esiyisisekelo sezinto zokwakha ze-polymeric ezibonakala ngesimo sazo esincane, esiguquguqukayo kanye nendawo enkulu ebusweni. Lezi zinto zokwakha zikhiqizwa ngokucubungula ama-resin e-polymer—kungaba avela ku-petroleum noma emithonjeni evuselelekayo—zibe amashidi aqhubekayo anobukhulu obulawulwa kahle, ububanzi, kanye nezakhiwo zemishini. Imakethe yamafilimu epulasitiki yomhlaba wonke ikhule kakhulu kusukela yasungulwa maphakathi nekhulu lama-20, kanti ukukhiqizwa kwamanje kwaminyaka yonke kudlula amathani ayizigidi eziyi-100 emhlabeni jikelele.

Ukuguquguquka kwamafilimu epulasitiki kuvela ekuhlanganisweni kwawo okuhlukile kwezakhiwo: okulula kodwa okuhlala isikhathi eside, okuguquguqukayo kodwa okuqinile, nokusobala noma okungacacile kuye ngezidingo zokwakheka. Lezi zici, ezihlanganiswe nezindleko zokukhiqiza eziphansi, zenze amafilimu epulasitiki abaluleka cishe kuyo yonke imikhakha yezimboni zanamuhla kanye nokuphila kwansuku zonke. Kusukela ekulondolozeni ukudla okusha kuya ekuvumeleni i-elekthronikhi eguquguqukayo ethuthukisiwe, amafilimu epulasitiki akhonza imisebenzi evame ukungabonakali kubasebenzisi bokugcina kodwa ebalulekile ekusebenzeni komkhiqizo nasekusimeni.

Intuthuko yakamuva kwezesayensi yezinto ezibonakalayo yandise amakhono amafilimu epulasitiki adlula kakhulu izindima zawo zendabuko. Izinto ezintsha zifaka phakathi amafilimu ashintsha izakhiwo ngenxa yezizathu zemvelo, ezinye izindlela ezibolayo kunepulasitiki evamile, kanye namafilimu okuvimbela ukusebenza okuphezulu anamakhono okuvikela angakaze abonwe. Ngesikhathi esifanayo, ukukhathazeka okwandayo ngezemvelo kuye kwakhuthaza ukuthuthukiswa kwezinhlelo zokuvuselela kabusha ezivaliwe kanye nezinto zefilimu ezisekelwe ku-bio ezigcina ukusebenza kahle ngenkathi zinciphisa umthelela wemvelo.

Hlobo luni lwefilimu yepulasitiki?

Amafilimu Athandwa Kakhulu

Amafilimu e-polyethylene ayizinhlobo zefilimu yepulasitiki ezisetshenziswa kakhulu, ezibiza ngaphezu kwama-40% efilimu yepulasitiki iyonke esetshenziswayo. Izinhlobo Eziyinhloko Nezimpawu Zamafilimu e-Polyethylene:

1. Ifilimu ye-Polyethylene Ephansi (LDPE)

Amafilimu e-LDPE abonakala ngokuguquguquka kwawo, ukucaca, kanye nezakhiwo zawo ezingezona ezinobuthi, ezingenaphunga. Anezinga elihle kakhulu lokumelana namanzi, ukuvikela umswakama, kanye nokuqina kwamakhemikhali, okwenza afaneleke ukupakisha ukudla, imithi, kanye nemikhiqizo esetshenziswa nsuku zonke. Amafilimu e-LDPE nawo anezakhiwo ezinhle zokuvala ukushisa futhi avame ukusetshenziswa njengezendlalelo zokuvala ukushisa kumafilimu ahlanganisiwe. Kodwa-ke, anokumelana nokushisa okubi futhi awafaneleki ukupakisha ukupheka okushisa okuphezulu.

2. Ifilimu ye-Polyethylene Enobuningi Obuphezulu (i-HDPE)

Amafilimu e-HDPE aqinile, acwebezela kancane, futhi anombala omhlophe. Abonisa amandla aphezulu okubamba, ukumelana nomswakama, ukumelana nokushisa, kanye nokumelana namafutha uma kuqhathaniswa ne-LDPE. I-HDPE ifaneleka ekupakisheni okuhlala isikhathi eside kanye namafilimu ezimboni kodwa ayinakho ukukhanya nokucwebezela okuphansi.

3. Ifilimu ye-Linear Low-Density Polyethylene (LLDPE)

Amafilimu e-LLDPE ahlanganisa ukuguquguquka kwe-LDPE namandla e-HDPE, anikeza izakhiwo ezinhle kakhulu zokunwebeka kanye nokumelana nokubhoboza. Asetshenziswa kabanzi kumafilimu okunwebeka, amafilimu okuncishiswa, kanye namafilimu okusonga, okwenza abe afaneleke kakhulu ekupakishweni okuzenzakalelayo okusheshayo.

4. Ifilimu ye-Metallocene Linear Low-Density Polyethylene (mLLDPE)

Amafilimu e-mlldpe akhiqizwa kusetshenziswa ama-catalyst e-metallocene futhi anikeza amandla aphezulu okuthinta, amandla okudonsa, kanye nokucaca okungcono uma kuqhathaniswa ne-LLDPE evamile. Avumela ukwehla kobukhulu befilimu ngaphezu kuka-15%, ngaleyo ndlela ehlisa izindleko zezinto zokwakha. I-mlldpe ivame ukusetshenziswa kumafilimu okugcina ukushisa, amafilimu okupakisha anzima, amafilimu okunciphisa, kanye nezinto zokupakisha eziphezulu.

Amanye Amafilimu Epulasitiki

1. Amafilimu e-Polypropylene (PP): Aphawuleka ngesilinganiso sawo sokuncibilika esiphezulu (160-170°C), okwenza afaneleke ukusetshenziswa kokugcwalisa okushisayo kanye nokupakisha okuphephile kuma-microwave. Amafilimu e-PP anikeza ukumelana okuhle kwamakhemikhali futhi avame ukusetshenziselwa ukupakisha ukudla okulula kanye nokusonga ukubulala amagciwane kwamadivayisi ezokwelapha.

2. Amafilimu e-Polyvinyl Chloride (PVC): Ayigugu ngenxa yokucaca okumangalisayo nokungaphrinteki kodwa abhekene nokuncipha kokusetshenziswa ngenxa yezinkinga zemvelo. Izinhlelo ezisele zifaka phakathi ukupakishwa kwama-blister kanye namafilimu athile okunamathela5.

3. Amafilimu e-Polyester (PET): Njengoba enamandla okubamba okuphezulu kanye nokuqina kokushisa, amafilimu e-PET abalulekile kuma-elekthronikhi aguquguqukayo, amateyipu kazibuthe, kanye nokupakishwa kokudla okunezithiyo eziphakeme. I-PET (BOPET) eqondiswe ku-Biaxial ibonisa izakhiwo zemishini nezithiyo ezithuthukisiwe kakhulu.

Amafilimu e-Specialty Polymer:

1. I-Polyamide (i-Nylon): Izakhiwo ezingavamile zokuvimbela umoya-mpilo ukuze kulondolozwe ukudla

2. I-Polyvinylidene Chloride (PVDC): Ukusebenza okuhle kakhulu komswakama kanye nokuvimbela umoya-mpilo

3. I-Polylactic Acid (PLA): Enye indlela entsha esekelwe ku-bio enokubumba, yize ivinjelwe ukuphuka—intuthuko yakamuva ikhiqize amafilimu e-PLA aguquguqukayo ngokufaka ama-plasticizer e-polyether ngqo ochungechungeni lwe-polymer.

Izindlela Zokukhiqiza Amafilimu Epulasitiki

1. Ukukhishwa Kwefilimu Eqhumayo: Inqubo eyinhloko yamafilimu e-PE, lapho i-polymer encibilikisiwe ikhishwa khona nge-diye eyindilinga, ifuthwe ibe yibhamuza, bese ipholiswa ukuze kwakhiwe ithubhu elingafuthwa libe yifilimu enezingqimba ezimbili. Le ndlela inikeza izakhiwo ezilinganiselayo zemishini kuzo zombili iziqondiso zomshini neziphambeneyo.

2. Ukukhishwa Kwefilimu Yokulingisa: Ukuncibilika kwe-polymer kukhishwa nge-die eyisicaba ku-roll ebandayo, kukhiqiza amafilimu acacile kakhulu kanye nobukhulu obufanayo. Kuvamile kumafilimu e-PP kanye ne-PET lapho izakhiwo zokukhanya zibalulekile khona.

3. Ukufaka Ikhalenda: Kusetshenziswa kakhulu kumafilimu e-PVC, lapho inhlanganisela ye-polymer idlula khona ochungechungeni lwama-roller ashisayo ukuze kufezwe ukulawula ukujiya okunembile. Amafilimu afakwe ikhalenda ngokuvamile anokuqedwa okuphezulu kwendawo kodwa awafani kakhulu nobubanzi.

4. Ukuthungwa Kwesixazululo: Kusetshenziselwa amafilimu akhethekile lapho ukufana okukhulu noma ukuzwela kokushisa kuvimbela ukucutshungulwa kokuncibilika. I-polymer iyancibilika ku-solvent, iphonswe ebhandeni, bese yomiswa ukuze yakhe ifilimu—evame kakhulu kwamanye amafilimu abolayo kanye nokusetshenziswa kwe-membrane.

5. Ukuqondiswa kwe-Biaxial: Amafilimu anwetshwa kokubili emshinini naseziqondisweni eziphambeneyo, kungaba ngokulandelana (uhlaka lwe-tenter) noma ngesikhathi esisodwa (inqubo yebhamuza), okuthuthukisa kakhulu amandla, ukucaca, kanye nezakhiwo zokuvimbela. Amafilimu e-PP (BOPP) kanye ne-PET (BOPET) aqondiswe ku-Biaxial ayizindinganiso zemboni zokupakisha okusebenzayo kakhulu.

Izitayela Ezivelayo Nokusungula Izinto Ezintsha Kumafilimu Epulasitiki

Imboni yamafilimu epulasitiki iyathuthuka, kugxilwe kakhulu ekusimeni, ukusebenza kahle kanye nokusebenza kahle. Ezinye izitayela eziphawulekayo zifaka:

1.Ama-ejenti okushelela angenazo i-PFAS:Ama-slip agents azinzile agwema izinto ze-per- kanye ne-polyfluoroalkyl (PFAS), abhekana nezidingo zokusebenza kanye nezinkinga zemvelo.

2. Izinhlelo Zokuzinza: Izinkampani ezifana neFox Packaging ziqede ngempumelelo i-PFAS kuzo zonke izinketho zazo zokupakisha eziguquguqukayo, zihambisana nemithetho ebanzi kanye nemikhuba yezimboni. I-US FDA iqinisekise izibopho zokuzithandela zokususa i-PFAS ekupakisheni kokudla, okunegalelo ekunciphiseni okukhulu kokuvezwa kwe-PFAS ekudleni.

Izixazululo ezintsha zokucubungula kwamahhala kwe-PFAS zisiza amafilimu epulasitiki avela ku-SILIKE

I-SILIKE isebenzisa indlela yokuthatha isinyathelo ngemikhiqizo yayo yochungechunge lwe-SILIMER, inikeza izinto ezintshaIzinsiza zokucubungula i-polymer ezingenayo i-PFAS (ama-PPA)). Lo mugqa womkhiqizo ophelele uqukethe ama-PPA amsulwa angu-100% angenayo i-PFAS, imikhiqizo ye-PPA engenayo i-fluorine, kanye nama-masterbatches e-PPA angenayo i-fluorine angenayo i-PFAS. Ngokususa isidingo sezithasiselo ze-fluorine, le mikhiqizo ithuthukisa kakhulu inqubo yokukhiqiza yemikhiqizo ye-LLDPE, LDPE, HDPE, mLLDPE, PP, kanye nefilimu. Ihambisana nemithethonqubo yakamuva yezemvelo ngenkathi ikhulisa ukusebenza kahle kokukhiqiza, inciphisa isikhathi sokungasebenzi, futhi ithuthukisa ikhwalithi yomkhiqizo iyonke. Nge-PPA engenayo i-SILIKE PFAS iletha izinzuzo zokugcina zomkhiqizo, okuhlanganisa: ukususwa kokuqhekeka okuncibilikile (isikhumba sikashaka), ukushelela okuthuthukisiwe, kanye nekhwalithi yobuso.

Ufunaezinye izindlela eziqhubekayo ekukhiqizweni kwamafilimu epulasitiki or I-PPA yama-masterbatches asebenzayo-angeziwe e-polyethylene?  SILIKE’s PFAS-Free PPA solutions can help enhance your Plastic film production while aligning with environmental standards. Visit web: www.siliketech.com or contact us at amy.wang@silike.cn to discover more.