Niaj hnub no, cia tham txog cov quav cab uas muaj feem cuam tshuam nrog peb lub neej. Cov quav ciab kuj tau siv ntau dua hauv kev lag luam khoom noj.
Cov ntaub ntawv online qhia tau tias xyoo 2019, kev siv cov yas noj ntau tshaj 46 lab, kev noj yas tau dhau 30, thiab tag nrho kev noj mov tau txog 50,000 txog 100,000 tons. Cov khaub noom yas ua ib txwm muaj, vim tias lawv yog ib-zaug siv, lawv tuaj yeem muab pov ncaj qha tom qab siv. txhua yam cuam tshuam.
Cov pa tsw muaj kev tsis pom zoo hauv kev sib xyaw, tshwj tsis yog cov neeg hloov pauv, xws li: hloov txoj kev haus dej haus kom tsis txhob muaj quav nyab; Siv tsis-straw xws li suction lub taub hau, uas zoo li yuav kim dua; Thiab siv rov siv zog, xws li Stainless Hlau Strawbs thiab iav Straws, nws zoo li tsis yooj yim heev. Tom qab ntawd, txoj kev zoo dua tam sim no yuav siv tau cov cab nkas tag nrho, xws li biodegradable yas strawb, puttch straws, partch straws, thiab lwm yam.
Rau cov laj thawj no, pib ntawm qhov kawg ntawm 2020, kuv lub teb chaws lub catering kev lag luam tau txwv tsis pub siv cov khaub noom yas thiab hloov cov nplaum uas tsis muaj kev cuam tshuam nrog cov teeb meem me me. Yog li ntawd, cov ntaub ntawv raw rau kev tsim cov khaub noom ua yeeb yam yog cov ntaub ntawv polymer, uas yog cov khoom siv degradable.
Cov khoom siv tsis muaj txiaj ntsig PLA rau kev ua cov hniav ua kom zoo dua ntawm kev ua kom tiav. Pla muaj zoo biodegradability, thiab nws ua rau muaj cov CO2 thiab H2O, uas tsis ua kom pom qhov ib puag ncig thiab ua tau raws li cov kev xav tau ntawm kev muaj kev sib sau ua ke. Cov txheej txheem ntau lawm yog qhov yooj yim thiab ntau lub voj voog ua haujlwm luv luv. Lub plob extruded ntawm qhov kub muaj qhov kub muaj qhov zoo thermal ruaj thiab cov kuab tiv thaiv. Qhov ci, pob tshab thiab kev xav ntawm cov khoom tuaj yeem hloov cov khoom siv roj av, thiab txhua yam khoom siv thiab tshuaj lom neeg thiab tshuaj lom neeg tuaj yeem ua tau raws li cov khoom noj hauv zos. Yog li ntawd, nws tau siv dav siv thiab tuaj yeem ua tau raws li cov kev xav tau ntawm cov dej haus ntau hauv kev ua lag luam tam sim no.
Pla straw muaj cov pa taws zoo thiab cua nruj, thiab yuav tsis ruaj khov thaum chav tsev kub siab dua 45 ° C lossis hauv qab kev ua haujlwm ntawm cov pa oxygen thiab cov kab mob sib luag. Saib xyuas tshwj xeeb yuav tsum tau them rau qhov kub thiab txias thaum cov chaw tsheb thauj mus los thiab cia. Lub sij hawm ntev ntev yuav ua rau deformation ntawm PLA straw.
Kuj tseem muaj ib daim ntawv loj ib yam qoob loo uas peb muaj. Daim ntawv straw yog ua los ntawm ib puag ncig tus phooj ywg nyoos ntoo pulp ntawv. Hauv cov txheej txheem moulding, nws yog ib qho tsim nyog los them sai sai rau cov yam xws li lub tshuab ceev thiab kua nplaum. , thiab kho lub taub ntawm cov quav nyab los ntawm qhov loj me ntawm lub manrel. Tag nrho cov txheej txheem ntau lawm ntawm cov ntawv nplaum yog qhov yooj yim thiab yooj yim rau cov khoom siv loj.
Txawm li cas los xij, tus nqi ntawm cov kab txaij yog qhov siab, thiab cov kev paub yuav tsum tau ua kom zoo. Daim ntawv ua zaub mov noj thiab cov nplaum yuav tsum siv. Yog tias nws yog daim quav nyab nrog cov qauv khoom siv ntawm tus number cas yuav tsum tau raws li cov khoom noj, thiab cov khoom noj muaj txiaj ntsig zoo ntawm cov khoom yuav tsum tau lees tias. Nyob rau tib lub sijhawm, nws yuav tsum haum haum ntau yam dej qab zib ntawm kev ua lag luam. Ntau daim ntawv teeb liab ua cov renan thiab gel thaum raug cov dej haus kub los yog dej acidic. Cov no yog cov teeb meem peb yuav tsum tau them sai sai rau.
Ntsuab lub neej breeds ntsuab txoj kev lag luam. Ntxiv nrog rau cov roj nplaum uas tau hais los saum toj no, nyob rau hauv "Kev Txiav Txim Siab Yas thiab cov lag luam tau pib ua kom tau cov khaub noom ntsuab, thiab kuv ntseeg tias yuav muaj lwm txoj hauv kev ntsuab ntxiv. Ntsuab, ib puag ncig tus phooj ywg thiab kev lag luam cov khoom lag luam yuav tshem tawm kom ruaj khov rau "cua".
Puas yog cov teeb meem degradable zoo tshaj teb?
Lub ntsiab kawg ntawm kev txiav npluav yas tau undoubtedly los txhawb ntxiv cov khoom lag luam yas, muag thiab txo cov khoom siv yas hauv cov khib nyiab.
Nrog degradable yas strawbs, yog tsis tas yuav txhawj txog kev siv qias neeg thiab tswj tsis tau?
Tsis yog, cov ntaub ntawv raw ntawm degradable plastics yog cov pob kws yog cov pob kws, thiab tswj cov zaub mov tsis tuaj yeem ua rau cov khoom pov tseg. Tsis tas li ntawd, kev nyab xeeb ntawm cov khoom siv yas hluav taws xob degradable yog tsis muaj siab dua li ntawm cov huab cua ib txwm muaj. Ntau lub hnab yas hloov chaw yooj yim yog qhov yooj yim tawg thiab tsis ruaj khov. Vim li no, qee cov neeg tsim khoom yuav ntxiv ntau yam ntxiv, thiab cov tshuaj ntxiv no yuav muaj qhov cuam tshuam tshiab ntawm ib puag ncig.
Tom qab kev faib tawm cov khib nyiab tau ua tiav, muaj cov khib nyiab dab tsi?
Hauv European thiab Asmeskas lub tebchaws, nws tuaj yeem raug cais raws li "cov khib nyiab" ua ke, lossis tso cai sau ua ke nrog cov khoom noj pov tseg thiab muab tso ua ke ntawm qhov rov qab kawg. Hauv cov lus qhia ntawm kev faib tawm los ntawm cov nroog feem ntau hauv kuv lub tebchaws, nws tsis rov ua haujlwm dua.
Lub Sijhawm Post: Feb-21-2022