Plastiki yekurongedza firimundeimwe yeakanyanya flexible yekurongedza zvinhu. Kune akawanda marudzi epurasitiki ekurongedza firimu ane akasiyana maitiro, uye mashandisiro awo anosiyana zvichienderana neakasiyana emhando yefirimu rekurongedza.
Packaging firimu ine kuoma kwakanaka, kuomesa hunyoro, uye kupisa chisimbiso kuita, uye inoshandiswa zvakanyanya: PVDC yekurongedza firimu inokodzera kurongedza chikafu uye inogona kuchengetedza kutsva kwenguva yakareba; Uye mvura-inonyungudika yePVA yekurongedza firimu inogona kushandiswa pasina kuvhura uye yakananga kuiswa mumvura; PC yekurongedza firimu haina kunhuhwirira, haina chepfu, iine pachena uye kupenya kwakafanana nebepa regirazi, uye inogona kupiswa uye kuvharirwa pasi pekupisa kwakanyanya uye kumanikidzwa.
Mumakore achangopfuura, kudiwa kwepasirese kwefirimu rekurongedza epurasitiki kwakaratidza kuenderera mberi, kunyanya sezvo mafomu ekurongedza ari kuramba achichinja kubva pakurongedzerwa kwakaoma kuenda pakurongeka. Ichi zvakare ndicho chinhu chikuru chinofambisa kukura kwekudiwa kwekurongedza firimu zvinhu. Saka, iwe unoziva here mhando uye mashandisirwo epurasitiki yekurongedza firimu? Ichi chinyorwa chinozonyanya kusuma zvivakwa uye mashandisiro emafirimu akati wandei epurasitiki ekurongedza
1. Polyethylene kurongedza firimu
PE yekurongedza firimu ifirimu rinoshandiswa zvakanyanya repurasitiki rekurongedza, rinoverengera anopfuura makumi mana muzana ehuwandu hwekushandiswa kwepurasitiki yekurongedza firimu. Kunyange zvazvo PE yekuputira firimu isina kunaka maererano nechitarisiko, simba, nezvimwewo, ine kusimba kwakanaka, kusimba kwehunyoro, uye kupisa kwekuisa chisimbiso kushanda, uye iri nyore kugadzirisa uye kuumba nemutengo wakaderera, saka inoshandiswa zvakanyanya.
a. Yakaderera density polyethylene kurongedza firimu.
LDPE yekurongedza firimu inogadzirwa zvakanyanya neextrusion blow molding uye T-mold nzira. Iyo inochinjika uye yakajeka kurongedza firimu iyo isiri-chepfu uye isinganhuhwi, ine ukobvu kazhinji pakati pe0.02-0.1mm. Iine kumira zvakanaka kwemvura, kusamira kwemwando, kusanaya kwemvura, uye kugadzikana kwemakemikari. Huwandu hukuru hweakajairwa hunyoro-uchapupu kurongedza uye nechando kurongedza kurongedza kunoshandiswa kune chikafu, mushonga, zvinodikanwa zvezuva nezuva, uye zvigadzirwa zvesimbi. Asi kune zvinhu zvine hunyoro hwakanyanya kunyura uye yakakwirira kunyorova zvinodiwa, zviri nani hunyoro hunodzivirira kurongedza mafirimu uye akaumbwa epakeji mafirimu anofanirwa kushandiswa kurongedza. LDPE yekurongedza firimu ine yakakwira mhepo kupenya, haina kunhuhwirira kuchengetedza, uye kushomeka kwemafuta kuramba, zvichiita kuti isakodzere kurongedza zviri nyore oxidized, flavoured, uye mafuta chikafu. Asi kufema kwayo kunoita kuti ive yakakodzera kurongedza-kutsva-kurongedza kwezvinhu zvitsva semichero nemiriwo. LDPE yekurongedza firimu ine yakanaka yekudziya yekunamatira uye yakaderera-yekushisa kupisa chisimbiso zvimiro, saka inowanzoshandiswa seyakamira yekunamira uye kupisa yekuisa chisimbiso dhizaini yeanosanganiswa ekurongedza mafirimu. Nekudaro, nekuda kwekushomeka kwayo kwekupisa, haigone kushandiswa sechisimbiso chekupisa chekubika mabhegi.
b. High density polyethylene kurongedza firimu. HDPE yekurongedza firimu ifirimu rakaomarara rakajeka rekurongedza rine mukaka chena chitarisiko uye kushomeka kwepamusoro kupenya. HDPE yekurongedza firimu ine zvirinani kusimba simba, hunyoro kuramba, kupisa kupisa, mafuta kuramba, uye kugadzikana kwemakemikari kupfuura LDPE yekurongedza firimu. Inogona zvakare kuve yakavharwa kupisa, asi kujeka kwayo hakuna kunaka seLDPE. HDPE inogona kugadzirwa kuita yakatetepa yekurongedza firimu ine ukobvu hwe0.01mm. Chitarisiko chayo chakada kufanana nebepa rakatetepa resirika, uye rinonzwa rakasununguka pakubata, rinozivikanwawo sepepa sefirimu. Iine simba rakanaka, kusimba, uye pachena. Kuti uwedzere pepa semanzwiro uye kuderedza mari, shoma shoma ye calcium carbonate inogona kuwedzerwa. HDPE bepa firimu rinonyanya kushandiswa kugadzira akasiyana mabhegi ekutenga, masaga emarara, mabhegi ekurongedza emichero, uye akasiyana mabhegi ekurongedza echikafu. Nekuda kwekutadza kufema kwemhepo uye kushaikwa kwekunhuhwirira kwekuchengetedza, nguva yekuchengetera chikafu chakaputirwa haisi kureba. Uye zvakare, HDPE yekurongedza firimu inogona kushandiswa seyekupisa yekuvharisa chisimbiso chekubika mabhegi nekuda kwekunaka kwayo kupisa.
c. Linear yakaderera-density polyethylene kurongedza firimu.
LLDPE yekurongedza firimu ichangobva kugadzirwa yakasiyana-siyana yepolyethylene yekurongedza firimu. Kuenzaniswa neLDPE yekurongedza firimu, LLDPE yekurongedza firimu ine yakakwira tensile uye simba rekuita, kubvarura simba, uye puncture kuramba. Nesimba rakafanana uye kuita seLDPE yekurongedza firimu, ukobvu hweLLDPE yekurongedza firimu inogona kudzikiswa kusvika pa20-25% yeLDPE yekurongedza firimu, nekudaro ichidzikisa zvakanyanya mutengo. Kunyangwe kana ichishandiswa sebhegi rinorema rekurongedza, ukobvu hwayo hunongoda kuve 0.1mm kuti isangane nezvinodiwa, iyo inogona kutsiva inodhura polymer yakakwirira-density polyethylene. Naizvozvo, LLDPE yakakodzera kwazvo kurongedza zvinodiwa zvezuva nezuva, kurongedza chikafu nechando, uye inoshandiswa zvakanyanya semabhegi ekurongedza anorema uye masaga emarara.
2. Polypropylene packaging film
PP yekurongedza firimu yakakamurwa kuita isina kutambanudzwa yekurongedza firimu uye biaxially yakatambanudzwa yekurongedza firimu. Iwo marudzi maviri ekurongedza firimu ane misiyano yakakura mukuita, saka anofanirwa kutariswa semhando mbiri dzakasiyana dzekurongedza firimu.
1) isina kutambanudzwa polypropylene kurongedza firimu.
Firimu rekuisa polypropylene risati ratsemuka rinosanganisira kupeperetswa kwepolypropylene packaging firimu (IPP) inogadzirwa neextrusion blow molding nzira uye extruded cast polypropylene packaging film (CPP) inogadzirwa neT-mold nzira. Kujeka uye kuoma kwePP yekurongedza firimu kwakashata; Uye ine kujeka kwepamusoro uye kusimba kwakanaka. CPP yekurongedza firimu ine zvirinani kujeka uye kupenya, uye kutaridzika kwayo kwakafanana neyegirazi bepa. Kuenzaniswa nePE yekurongedza firimu, isina kutambanudzwa polypropylene yekurongedza firimu ine zvirinani kujeka, kupenya, hunyoro kuramba, kupisa kupisa, uye mafuta kuramba; Kusimba kwemagetsi epamusoro, kumira zvakanaka kwemisodzi, kuramba kwebhomba, uye kuramba kupfeka; Uye haina chepfu uye haina kunhuwa. Naizvozvo, inoshandiswa zvakanyanya kurongedza chikafu, mishonga yemishonga, machira nezvimwe zvinhu. Asi ine kusanaya zvakanaka kwekusanaya kwemvura uye inoita brittle pa 0-10 ℃, saka haigone kushandiswa kurongedza chikafu chakaomeswa. Firimu rekuisa polypropylene risingatsekidzwe rine kupisa kwakanyanya uye kushanda kwakanaka kwekuvhara kupisa, saka inowanzoshandiswa sechisimbiso chekupisa chekubika mabhegi.
2) Biaxially oriented polypropylene packaging film (BOPP).
Kuenzaniswa neiyo isina kutambanudzwa polypropylene yekurongedza firimu, BOPP yekurongedza firimu inonyanya kuve neanotevera maitiro: ① Kuvandudza kujeka uye kupenya, kuenzaniswa nebepa regirazi; ② Simba remagetsi rinowedzera, asi kureba kunoderera; ③ Kuvandudza kutonhora kwekudzivirira uye hapana brittleness kunyangwe ichishandiswa pa -30 ~ -50 ℃; ④ The mwando permeability uye mhepo permeability zvakaderedzwa nehafu, uye organic mhute permeability inoderedzwawo kune akasiyana madhigirii; ⑤ Single firimu haigoni kuvharwa zvakananga kupisa, asi kupisa kwayo kwekuisa chisimbiso kushanda kunogona kuvandudzwa nekunamira kwekunamatira nemamwe mafirimu epurasitiki ekurongedza.
BOPP yekurongedza firimu imhando nyowani yekurongedza firimu yakagadziridzwa kutsiva girazi bepa. Iyo ine hunhu hwekusimba kwemagetsi, kusimba kwakanaka, kujeka kwakanaka uye kupenya. Mutengo wayo unenge 20% yakaderera pane yegirazi bepa. Saka yakatsiva kana kutsiva bepa regirazi mupakeji yezvokudya, mishonga, fodya, machira, uye zvimwe zvigadzirwa. Asi elasticity yayo yakakwira uye haigone kushandiswa kurongedza zvihwitsi. BOPP yekurongedza firimu rinoshandiswa zvakanyanya sechinhu chigadziko cheanosanganiswa kurongedza mafirimu. Mafirimu ekurongedza eComposite akagadzirwa kubva kualuminium foil uye mamwe epurasitiki ekurongedza mafirimu anogona kusangana nezvinodiwa zvekurongedza zvezvinhu zvakasiyana uye akaiswa zvakanyanya.
3. Polyvinyl chloride packaging film
PVC yekurongedza firimu yakakamurwa kuita yakapfava yekurongedza firimu uye yakaoma kurongedza firimu. Kurebesa, kubvarura kuramba, uye kutonhora kuramba kwepanyoro PVC yekurongedza firimu zvakanaka; Zviri nyore kudhinda uye kupisa chisimbiso; Inogona kugadzirwa kuita transparent packaging film. Nekuda kwekunhuhwirira kweplasticizers uye kutama kweplasticizers, nyoro PVC yekurongedza firimu kazhinji haina kukodzera kurongedza chikafu. Asi iyo yakapfava PVC yekurongedza firimu inogadzirwa neyemukati yeplasticization nzira inogona kushandiswa kurongedza chikafu. Kazhinji kutaura, PVC inochinjika yekurongedza firimu inonyanya kushandiswa kune zvigadzirwa zvemaindasitiri uye isiri chikafu kurongedza.
Yakaoma PVC yekurongedza firimu, inowanzozivikanwa sePVC girazi bepa. Kujeka kwepamusoro, kuomarara, kusimba kwakanaka, uye kumonyoroka kwakagadzikana; Iine kusimba kwemhepo kwakanaka, kuchengetedza kunhuhwirira, uye kunaka kwekudzivirira hunyoro; Yakanakisa kudhinda kuita, inogona kugadzira isiri-chepfu yekurongedza firimu. Inonyanya kushandiswa kurongedza zvakamonyoroka zvema candies, kurongedza machira uye zvipfeko, pamwe nekunze kurongedza firimu refodya uye chikafu mabhokisi ekutakura. Zvisinei, yakaoma PVC ine urombo kutonhora kuramba uye anova brittle panguva yakaderera tembiricha, zvichiita kuti kusakodzera sepakurongerwa zvinhu zvokudya nechando.
4. Polystyrene packaging film
PS yekurongedza firimu ine yakakwira kujeka uye kupenya, kutaridzika kwakanaka, uye kuita kwakanaka kwekudhinda; Kunyura kwemvura yakaderera uye kukwira kwepamusoro kune magasi uye mhute yemvura. Firimu rekurongedza repolystyrene risina kudhirowa rakaoma uye rakapfava, nekuwedzera kwakaderera, kusimba kwesimba, uye kupikisa mhedzisiro, saka hariwanzo shandiswa sechinhu chinochinjika chekurongedza. Iwo makuru ekurongedza zvinhu anoshandiswa ari biaxially oriented polystyrene (BOPS) yekurongedza firimu uye kupisa kunotora kurongedza firimu.
Iyo BOPS yekurongedza firimu inogadzirwa nebiaxial kutambanudza yakavandudza zvakanyanya hunhu hwayo hwepanyama uye hwemagetsi, kunyanya kureba, simba rekuita, uye kuoma, ichiri kuchengetedza kujeka kwayo kwepakutanga uye kupenya. Kufema kwakanaka kweBOPS kurongedza firimu kunoita kuti ive yakakodzera kurongedza chikafu chitsva semichero, miriwo, nyama nehove, pamwe nemaruva.
5. Polyvinylidene chloride packaging film
PVDC yekurongedza firimu firimu rinochinjika, rakajeka, uye rakakwira chipingamupinyi chekurongedza. Iine hunyoro hwekudzivisa, kusimba kwemhepo, uye kuchengetedza zvinonhuwira; Uye ine kurwisa kwakanyanya kumaasidhi akasimba, alkalis akasimba, makemikari, uye mafuta; Iyo isina kucheneswa PVDC yekurongedza firimu inogona kupisa yakavharwa, iyo yakakodzera kwazvo kurongedza chikafu uye inogona kuchengetedza kunaka kwechikafu kusingachinjiki kwenguva yakareba.
Kunyangwe PVDC yekurongedza firimu iine simba rakanaka remuchina, kuoma kwayo hakuna kunaka, yakanyanya kupfava uye inonamira, uye kushanda kwayo kwakashata. Pamusoro pezvo, PVDC ine crystallinity yakasimba, uye firimu rayo rekurongedza rinowanzo putika kana microcracks, pamwe nemutengo wayo wepamusoro. Saka parizvino, PVDC yekurongedza firimu hainyanyi kushandiswa mune imwechete firimu fomu uye inonyanya kushandiswa kugadzira inosanganiswa yekurongedza firimu.
6. Ethylene vinyl acetate copolymer packaging film
Kuita kweEVA yekurongedza firimu kune hukama nezviri mukati mevinyl acetate (VA). Iyo yakakwira iyo VA yemukati, zviri nani kunyungudika, kushushikana kwekupwanya kuramba, kushomeka kwekushisa, uye kupisa kwekuisa chisimbiso kuita kwefirimu rekurongedza. Kana iyo VA yemukati yasvika 15% ~ 20%, kuita kweiyo firimu rekurongedza kuri padyo neiyo yakapfava PVC yekurongedza firimu. Iyo yakaderera iyo VA yemukati, iyo shoma elastic iyo yekurongedza firimu iri, uye kuita kwayo kuri padyo neLDPE yekurongedza firimu. Zviri mukati meVA mune zvakajairika EVA yekurongedza firimu ndeye 10% ~ 20%.
EVA yekurongedza firimu ine yakanaka yakaderera-kupisa yekuisa chisimbiso uye inosanganisirwa yekuisa chisimbiso, ichiiita yakanakisa yekuvharisa firimu uye inowanzoshandiswa seyekupisa chisimbiso chisimbiso cheanosanganiswa kurongedza mafirimu. Kupisa kwekudzivirira kweEVA yekurongedza firimu haina kunaka, ine tembiricha yekushandisa ye60 ℃. Kupinza kwayo mweya kwakashata, uye inonamira nekunhuwa. Saka single-layer EVA yekurongedza firimu haiwanzo kushandiswa zvakananga kurongedza chikafu.
7. Polyvinyl doro kurongedza firimu
PVA yekurongedza firimu yakakamurwa kuita mvura-inodzivirira kurongedza firimu uye inonyungudika nemvura yekurongedza firimu. Firimu rinodzivirira mvura rekurongedza rinogadzirwa kubva kuPVA ine polymerization degree inopfuura 1000 uye yakazara saponification. Iyo inonyungudika nemvura yekurongedza firimu inogadzirwa kubva kuPVA zvishoma saponified ine yakaderera polymerization degree. Iyo huru yekurongedza firimu inoshandiswa ndeye isingadzivirirwe nemvura yePVA yekurongedza firimu.
PVA yekurongedza firimu ine kujeka kwakanaka uye kupenya, haisi nyore kuunganidza magetsi akamira, haisi nyore kushambadza huruva, uye ine yakanaka kudhinda kuita. Iine kusimba kwemhepo uye kuchengetedza kunhuhwirira munzvimbo yakaoma, uye mafuta akanaka anopikisa; Iine simba rakanaka remagetsi, kuoma, uye kusagadzikana kuputsa kuramba; Inogona kuvharwa kupisa; PVA yekurongedza firimu ine yakakwira mwando permeability, kunyura kwakasimba, uye saizi isina kugadzikana. Saka, polyvinylidene chloride coating, inozivikanwawo seK coating, inowanzoshandiswa. Iyi firimu yakavharidzirwa yePVA yekurongedza inogona kuchengetedza yakanakisa mhepo, kuchengetedza inonhuhwirira, uye hunyoro kuramba kunyangwe pasi pehunyoro hwepamusoro, ichiita kuti ive yakakodzera kurongedza chikafu. PVA kurongedza firimu rinowanzo shandiswa sechivharo chivharo checomposite kurongedza firimu, iro rinonyanya kushandiswa kurongedza chikafu chinokurumidza, zvigadzirwa zvenyama, zvigadzirwa zvekrimu uye zvimwe zvekudya. PVA firimu rimwe chete rinoshandiswawo zvakanyanya kurongedza machira uye zvipfeko.
Mvura inonyungudika yePVA yekurongedza firimu inogona kushandiswa kuyera kurongedza kwezvigadzirwa zvemakemikari senge disinfectants, detergents, bleaching agents, dhayi, mishonga yezvipembenene, uye mabhegi ekugezesa hembe dzevarwere. Inogona kuiswa zvakananga mumvura pasina kuvhura.
8. Nylon packaging film
Nylon kurongedza firimu rinonyanya kusanganisira mhando mbiri: biaxially yakatambanudzwa yekurongedza firimu uye isina kutambanudzwa yekurongedza firimu, pakati peiyo biaxially yakatambanudzwa nylon yekurongedza firimu (BOPA) inonyanya kushandiswa. Iyo isina kudonhedzwa naironi yekurongedza firimu ine yakasarudzika elongation uye inonyanya kushandiswa kune yakadzika yakatambanudzwa vacuum kurongedza.
Nylon packaging firimu ifirimu rekurongedza rakaomarara iro risiri muchetura, risinganhuhwi, rakajeka, rinopenya, risingatadze kuunganidzwa kwemagetsi, uye rine kuita kwakanaka kwekudhinda. Iyo ine yakakwira mechaniki simba, katatu simba rekusimba rePE yekurongedza firimu, uye yakanakisa kupfeka kuramba uye puncture kuramba. Nylon yekurongedza firimu ine yakanaka kupisa kupisa, dikita kuramba, uye mafuta kuramba, asi zvakaoma kupisa chisimbiso. Nylon yekurongedza firimu ine yakanaka kusimba kwemhepo munzvimbo yakaoma, asi ine yakakwira mwando permeability uye kunyura kwemvura kwakasimba. Munzvimbo dzine hunyoro hwepamusoro, kugadzikana kwedimensional kwakashata uye kusapinda kwemhepo kunoderera zvakanyanya. Naizvozvo, polyvinylidene chloride coating (KNY) kana composite ine PE yekurongedza firimu inowanzo shandiswa kuvandudza kwayo kudzivirira kwemvura, hunyoro kuramba, uye kupisa kwekuisa chisimbiso kuita. Iyi NY/PE composite yekurongedza firimu inoshandiswa zvakanyanya mukurongedza chikafu. Nylon packaging inoshandiswa zvakanyanya mukugadzirwa kwemafirimu ekubatanidza ekurongedza uye zvakare se substrate yealuminium yakapfava yekurongedza mafirimu.
Nylon yekurongedza firimu uye firimu rayo rekurongedza rinonyanya kushandiswa kurongedza chikafu chine mafuta, chikafu chese, chikafu chakaomeswa nechando, uye chikafu chakabikwa. Iyo isina kudhirowa nylon yekurongedza firimu, nekuda kwehupamhi hwekurebesa, inogona kushandiswa kurongedza vacuum yenyama yakakangwa, akawanda mapfupa nyama uye zvimwe zvekudya.
9. Ethylene vinyl doro copolymerkurongedza firimu
EVAL yekurongedza firimu imhando nyowani yeakakwira barriers yekurongedza firimu rakagadzirwa mumakore achangopfuura. Iine kujeka kwakanaka, oksijeni barriers, kuchengetedza kunhuhwirira, uye kuramba mafuta. Asi hygroscopicity yayo yakasimba, iyo inoderedza zvipingamupinyi zvayo mushure mekutora unyoro.
EVAL kurongedza firimu rinowanzo gadzirwa kuita musanganiswa wepakeji firimu pamwe chete nezvinhu zvinodzivirira hunyoro, zvinoshandiswa kurongedza zvigadzirwa zvenyama senge soseji, ham, uye chikafu chinokurumidza. EVAL imwe firimu inogona zvakare kushandiswa kurongedza zvigadzirwa zvefiber uye zvigadzirwa zvemakushe.
10. Polyester packaging film yakagadzirwa nebiaxially oriented polyester packaging film (BOPET).
PET yekurongedza firimu imhando yekurongedza firimu rine kuita kwakanaka. Iine kujeka kwakanaka uye kupenya; Iine kusimba kwemhepo kwakanaka uye kuchengetedza kunhuhwirira; Pakati nepakati hunyoro kuramba, nekudzikira kwekunyorova kwemvura patembiricha yakaderera. Iyo mechanic zvimiro zvePET yekurongedza firimu yakanaka kwazvo, uye kusimba kwayo nekuomarara ndizvo zvakanakisa pakati peese thermoplastic mapurasitiki. Simba rayo rekusimba uye simba rekuita rakakwira zvakanyanya kupfuura iro reyakajairwa yekurongedza firimu; Uye ine yakanaka kuomarara uye saizi yakagadzikana, yakakodzera kune yechipiri kugadzirisa sekudhinda uye mapepa emabhegi. PET yekurongedza firimu zvakare ine yakanakisa kupisa uye kutonhora kuramba, pamwe neakanaka makemikari uye mafuta kuramba. Asi haidziviriri kune alkali yakasimba; Zviri nyore kutakura static magetsi, hapana yakakodzera anti-static nzira parizvino, saka kutarisisa kunofanirwa kubhadharwa pakurongedza zvinhu zvehupfu.
Iyo yekupisa yekuisa chisimbiso yePET yekurongedza firimu yakaoma zvakanyanya uye parizvino inodhura, saka haiwanzo kushandiswa muchimiro chefirimu rimwe chete. Mazhinji acho anoumbwa nePE kana PP yekurongedza firimu ine yakanaka yekuisa chisimbiso zvivakwa kana yakaputirwa ne polyvinylidene chloride. Iyi firimu inosanganiswa yekurongedza yakavakirwa paPET kurongedza firimu chinhu chakanakira kurongedza mashandiro emichina uye rinoshandiswa zvakanyanya mukurongedza chikafu sekupisa, kubheka, uye nechando.
11. Polycarbonate packaging film
PC yekurongedza firimu haina kunhuhwirira uye haina chepfu, iine pachena uye inopenya yakafanana nebepa regirazi, uye simba rayo rinofananidzwa nePET yekurongedza firimu uye BONY yekurongedza firimu, kunyanya kwayo kwakatanhamara kupikisa. PC yekurongedza firimu ine yakanakisa kunhuhwirira kuchengetedza, yakanaka kusimba kwemhepo uye hunyoro kuramba, uye yakanaka UV kuramba. Iine mafuta akanaka ekupikisa; Iinewo kupisa kwakanaka uye kushorwa kunotonhora. Inogona kubikwa uye sterilized pasi pekushisa kwepamusoro uye kudzvinyirira kwakanyanya; Kudzikira tembiricha kuramba uye nechando kuramba zviri nani pane PET yekurongedza firimu. Asi kushanda kwayo kwekuvhara kupisa hakuna kunaka.
PC yekurongedza firimu chinhu chakanakira chikafu chekurongedza zvinhu, chinogona kushandiswa kurongedza chikafu chakabikwa, chakaomeswa nechando, uye chine flavour. Parizvino, nekuda kwemutengo wayo wakakwira, inonyanya kushandiswa kurongedza mahwendefa emishonga uye sterile packaging.
12. Acetate cellulose packaging film
CA yekurongedza firimu iri pachena, rinopenya, uye rine nzvimbo yakatsetseka. Iyo yakaoma, yakagadzikana muhukuru, haisi nyore kuunganidza magetsi, uye ine yakanaka processability; Zviri nyore kubatanidza uye zvine kudhinda kwakanaka. Uye ine kudzivirira kwemvura, kupeta kuramba, uye kusimba. Kupinda kwemhepo uye kunyorova kweiyo CA yekurongedza firimu yakakwira, iyo inogona kushandiswa "kufema" kurongedza kwemiriwo, michero, uye zvimwe zvinhu.
CA kurongedza firimu rinowanzo shandiswa seyekunze dhizaini recomposite yekurongedza firimu nekuda kwekutaridzika kwayo kwakanaka uye nyore kudhinda. Iyo inosanganiswa yekurongedza firimu inoshandiswa zvakanyanya kurongedza zvinodhaka, chikafu, zvizorwa uye zvimwe zvinhu.
13. Ionic yakasungirirwa polymerkurongedza firimu roll
Kujeka uye kupenya kweion yakasungirirwa polymer yekurongedza firimu iri nani pane iyo yePE firimu, uye haina chepfu. Iine kusimba kwemhepo kwakanaka, kupfava, kusimba, kupikisa kupinza, uye kuramba kwemafuta. Inokodzera kurongedza zvinhu zveangular uye kupisa kupfupisa kurongedza kwechikafu. Yayo yakaderera-kupisa kupisa sealing performance yakanaka, tembiricha yekuisa chisimbiso yekushisa yakafara, uye kupisa kwekuisa chisimbiso kuchiri kwakanaka kunyangwe nemainclusions, saka inowanzoshandiswa sechisimbiso chekupisa chekubatanidza mafirimu ekurongedza. Pamusoro pezvo, ma ion akasungirirwa mapolymers ane yakanaka yekunamira yekupisa uye anogona kubatanidzwa pamwe chete nemamwe mapurasitiki kuti abudise akaumbwa epakeji mafirimu.
Nguva yekutumira: Feb-11-2025