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Chii chinonzi kuiswa kwepurasitikifilms?

Mafirimu epurasitiki anomiririra kirasi yakakosha yezvigadzirwa zvepolymeric zvinoratidzwa nehutete hwavo, hunyoro hunoshanduka uye yakakura nzvimbo. Izvi zvigadzirwa zvemainjiniya zvinogadzirwa nekugadzirisa polymer resins - ingave inotorwa kubva mupetroleum kana kuwedzera kubva kune inovandudzwa masosi - mumapepa anoenderera ane ukobvu, hupamhi, uye michina inodzorwa. Musika wepasi rose wemafirimu epurasitiki wakura zvakanyanya kubva payakavamba pakati pezana ramakore rechi20, nekugadzirwa kwepagore kwepagore kunodarika zana remamiriyoni ematani epasi rose.

Iko kushandiswa kwakasiyana-siyana kwemafirimu epurasitiki kunobva mumubatanidzwa wawo wakasiyana wezvivakwa: huremu asi hwakasimba, hunochinjika asi hwakasimba, uye hwakajeka kana kujeka zvichienderana nezvinodiwa zvekugadzira. Aya maitiro, akasanganiswa nemitengo yakaderera yekugadzira, akaita kuti mafirimu epurasitiki ave akakosha pachikamu chose cheindasitiri yemazuva ano uye hupenyu hwezuva nezuva. Kubva pakuchengetedza kutsva kwechikafu kusvika pakugonesa zvemagetsi zvinochinjika, mafirimu epurasitiki anoshanda mabasa anowanzo kusaonekwa kune vashandisi vekupedzisira asi akakosha pakuita kwechigadzirwa uye kusimba.

Kufambira mberi kwazvino musainzi yezvinhu kwakawedzera kugona kwemafirimu epurasitiki kupfuura mabasa avo echinyakare. Zvitsva zvinosanganisira mafirimu anoshandura zvivakwa zvichienderana nekukurudzira kwezvakatipoteredza, biodegradable dzimwe nzira kune dzakajairwa mapurasitiki, uye yepamusoro-inoshanda zvipingamupinyi mafirimu ane hunyanzvi hwekudzivirira husati hwamboitika. Saizvozvo, kukura kunetsa kwezvakatipoteredza kwakakurudzira kuvandudzwa kweakavharika-loop recycling masisitimu uye bio-based firimu zvinhu zvinochengetedza kuita uku zvichideredza kukanganiswa kwezvakatipoteredza.

Ndeupi rudzi rwefirimu repurasitiki?

Mafirimu Akanyanya Kuwanda

Mafirimu epolyethylene ndiyo inonyanya kushandiswa mhando yemafirimu epurasitiki, inoverengera inopfuura 40% yehuwandu hwekushandiswa kwemafirimu epurasitiki. Mhando Huru uye Hunhu hwePolyethylene Mafirimu:

1. Yakaderera-Density Polyethylene Firimu (LDPE)

Mafirimu eLDPE anoratidzwa nekuchinjika kwawo, pachena, uye asiri muchetura, asinganhuhwi zvivakwa. Ivo vane yakanakisa kudzivirira kwemvura, kunyorova-kusimbisa, uye kugadzikana kwemakemikari, zvichiita kuti ive yakakodzera kurongedza chikafu, mishonga, uye zvigadzirwa zvemazuva ese. Mafirimu eLDPE anewo zvinhu zvakanaka zvekuisa chisimbiso uye anowanzoshandiswa sematanho ekupisa-seal mumafirimu akaumbwa. Nekudaro, ivo vane hurombo hwekupisa kupisa uye havana kukodzera kune yakakwirira-tembiricha yekubika kubika.

2. High-Density Polyethylene Firimu (HDPE)

HDPE mafirimu akaoma, semi-translucent, uye chena muruvara. Ivo vanoratidza hukuru hwekusimba simba, hunyoro kuramba, kupisa kupisa, uye mafuta kuramba zvichienzaniswa neLDPE. HDPE inokodzera kurongedza kwenguva refu uye mafirimu emaindasitiri asi ine yakaderera kujeka uye kupenya.

3. Linear Yakaderera-Density Polyethylene Firimu (LLDPE)

Mafirimu eLLDPE anosanganisa kuchinjika kweLDPE nesimba reHDPE, achipa yakanakisa kutambanudza zvivakwa uye puncture kuramba. Iwo anoshandiswa zvakanyanya mumafirimu akatambanudzwa, shrink mafirimu, uye kupeta mafirimu, achiaita akanakira epamusoro-kumhanya otomatiki kurongedza.

4. Metallocene Linear Yakaderera-Density Polyethylene Firimu (mLLDPE)

Mafirimu eMLLDPE anogadzirwa achishandisa metallocene catalysts uye anopa simba repamusoro rekuita, kusimba kwegoho, uye kujeka kuri nani zvichienzaniswa neyakajairwa LLDPE. Vanobvumira kudzikiswa kwehukobvu hwefirimu nepamusoro pe15%, nekudaro vachidzikisa mutengo wezvinhu. mLLDPE inowanzoshandiswa mumafirimu egreenhouse, anorema-basa kurongedza mafirimu, shrink mafirimu, uye yepamusoro-yekupedzisira yekurongedza zvinhu.

Mamwe Mafirimu ePlastiki

1. Polypropylene (PP) Mafirimu: Inonyanya kuzivikanwa nepamusoro-soro yakanyunguduka (160-170 ° C), ichiita kuti ive yakakodzera kune kupisa-kuzadza kushandiswa uye microwave-yakachengeteka packaging. Mafirimu ePP anopa zvakanakisa makemikari kuramba uye anowanzo shandiswa kurongedza chikafu chekudya uye yekurapa mudziyo wekutetisa wraps.

2. Polyvinyl Chloride (PVC) Mafirimu: Anokosheswa kujeka kunoshamisa uye kudhinda asi akatarisana nekuderera kwekushandiswa nekuda kwekunetseka kwezvakatipoteredza. Zvishandiso zvasara zvinosanganisira blister kurongedza uye mamwe mafirimu ekudya5.

3. Polyester (PET) Mafirimu: Kuzvikudza kusimba kwepamusoro uye kugadzikana kwekupisa, mafirimu ePET anodiwa pamagetsi anoshanduka, magineti matepi, uye yakakwirira-inovharira chikafu. Biaxially-oriented PET (BOPET) inoratidza kunyanya yakagadziridzwa michina uye inodzivirira zvivakwa.

Specialty Polymer Films:

1. Polyamide (Naironi): Yakasarudzika oksijeni barriers zvivakwa zvekuchengetedza chikafu

2. Polyvinylidene Chloride (PVDC): Yakanakisa mwando uye oksijeni barriers performance

3. Polylactic Acid (PLA): Emerging bio-based alternative ine compostability, kunyange zvazvo yagara ichiganhurwa nebrittleness-kufambira mberi kwemazuva ano kwakagadzira flexible PLA mafirimu nekubatanidza polyether plasticizers zvakananga mu polymer cheni.

Plastic Film Kugadzira Nzira

1. Blown Firimu Extrusion: Iyo inotungamira maitiro emafirimu ePE, apo polymer yakanyungudutswa inoburitswa kuburikidza nedhiri dhiri, inopinzwa mububble, uye yakatonhodzwa kuita chubhu inogona kupepetwa kuita kaviri-layer firimu. Iyi nzira inopa yakaringana michina zvivakwa mune ese muchina uye anochinjika nzira.

2. Cast Film Extrusion: Polymer melt inonyungudutswa kuburikidza neflat die pane yakatonhora roll, inogadzira mafirimu ane kujeka kunoshamisa uye yunifomu ukobvu. Zvakajairika kune PP uye PET mafirimu uko optical zvivakwa zvakakosha.

3. Calendering: Inonyanya kushandiswa kuPVC mafirimu, apo iyo polymer compound inopfuudzwa kuburikidza nenhevedzano yeanopisa rollers kuti iwane chaiyo ukobvu kutonga. Mafirimu akaredhiwa anowanzo kuve nepamusoro pepamusoro pekupedzisira asi mashoma mayunifomu emichina muhupamhi.

4. Solution Casting: Inoshandiswa kune akakosha mafirimu apo kuenzana kwakanyanya kana kupisa kusingabatanidzi kunyungudika. Iyo polymer inonyungudutswa musolvent, inokandwa pabhandi, uye yakaomeswa kuita firimu-yakajairika kune mamwe mabhaibheri mabhaisikopo uye membrane application.

5. Biaxial Orientation: Mafirimu akatambanudzwa mumashini uye akachinjika nzira, ingave sequentially (tenter furemu) kana panguva imwe chete (bubble process), zvinoshamisa kuvandudza simba, kujeka, uye zvipingamupinyi zvinhu. Biaxially-oriented PP (BOPP) uye PET (BOPET) mafirimu zviyero zveindasitiri zvekurongedza kwepamusoro-kuita.

Emerging Trends uye Innovations muPlastiki Mafirimu

Indasitiri yemafirimu epurasitiki iri kusimukira, nekusimbisa kwakasimba pakusimba, kuita, uye kugona. Mamwe maitiro anozivikanwa anosanganisira:

1.PFAS-Yemahara Slip Agents:Sustainable slip agents anodzivirira per- uye polyfluoroalkyl zvinhu (PFAS), achigadzirisa zvese zvinodiwa kuita uye kunetseka kwezvakatipoteredza.

2. Sustainability Initiatives: Makambani akaita seFox Packaging akabudirira kubvisa PFAS kubva kune ese anochinjika ekurongedza sarudzo, kuenderana neyakakura kudzora uye maindasitiri maitiro. Iyo US FDA yakachengetedza zvisungo zvekuzvidira kubvisa PFAS kubva mukurongedza chikafu, zvichibatsira mukudzikisira kwakanyanya mukudya kwePFAS kuratidzwa.

Mhinduro dzekuvandudza dzePFAS-Yemahara kugadzirisa aids epurasitiki mafirimu kubva kuSILIKE

SILIKE inotora maitiro ekuita neayo SILIMER akatevedzana zvigadzirwa, inopa hunyanzviPFAS-yemahara polymer kugadzirisa aids (PPAs) Iyi yakazara chigadzirwa mutsara inoratidzira 100% yakachena PFAS-isina PPAs, fluorine-isina PPA zvigadzirwa, uye PFAS-isina, fluorine-isina PPA masterbatches. Nekubvisa kudiwa kwezvinowedzera fluorine, zvigadzirwa izvi zvinosimudzira maitiro ekugadzira eLLDPE, LDPE, HDPE, mLLDPE, PP, uye zvigadzirwa zvemufirimu. Ivo vanoenderana neazvino mirau yezvakatipoteredza uku vachiwedzera kugadzirwa kwakanaka, kuderedza nguva, uye kuvandudza huwandu hwechigadzirwa. Iine SILIKE PFAS-yemahara PPA inounza ekupedzisira Chigadzirwa mabhenefiti, anosanganisira: kubviswa kwekunyunguduka kutsemuka (shark ganda), yakakwidziridzwa kutsvedzereka, uye pamusoro pemhando.

Kutsvagadzimwe nzira dzakasimba mukugadzirwa kwemafirimu epurasitiki or PPA ye polyethylene inoshanda-yekuwedzera masterbatches?  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.