Lub thawv noj su uas siv tau pov tseg yog siv dav hauv peb lub neej, thiab siv hauv tsev, tsev noj mov, thiab tsev so. Muaj ntau yam khoom noj pov tseg pov tseg, nrog rau cov hnab yas, duab los qhia, cov hmoov txhuv nplej, lub plawv hniav, thiab lwm yam Cia' s saib kom ze rau cov yam ntxwv ntawm cov thawv noj su pov tseg no.
1. Yas hom
Cov thawv ntim su ua uas siv yas tau muaj xws li PP polypropylene thiab PS polystyrene, ob qho tib si tsis muaj kuab lom, tsis qab thiab ntxhiab. PP yog softer. Feem ntau, kev siv kub ntawm PP yog -6 degrees txog +120 degrees, yog li tshwj xeeb Nws yog qhov haum rau tuav cov zaub mov kub thiab cov tais kub. Nws tuaj yeem raug rhaub hauv lub qhov cub microwave lossis tseem nyob hauv qhov chaw khov kho. Kev siv kub ntawm kev hloov pauv PP tuaj yeem tswj tau ntawm -18 degrees mus rau +110 degrees. Lub thawv ntim su ua los ntawm cov PP no tuaj yeem kho kom sov tshwj tsis yog Nws tuaj yeem muab tso rau hauv tub yees thiab siv rau hauv tub yees.
PS yog nyuaj thiab pob tshab, tab sis nws yooj yim los kua muag. PS pib ua kom mos muag thaum kub txog 75 degrees, yog li nws tsis tsim nyog rau tuav cov mov kub thiab tais diav, tab sis PS muaj qhov ntsuas kub tsis zoo thiab yog qhov zoo tshaj plaws ntim khoom rau dej khov.
Txhawm rau txo tus nqi, qee lub thawv noj su thawv siv PP ua lub thawv thiab PS ua lub hau. Qhov kom zoo dua yog lub hau yog pob tshab thiab PS yog qhov nyuaj. Nws tuaj yeem ua cov ntawv nyias nyias kom txo cov nqi. Txawm li cas los xij, cov neeg siv khoom siv ntawm qhov tsim qauv no yuav tsum nkag siab ob yam ntaub ntawv Thov nco ntsoov tsis txhob muab tag nrho lub thawv su nrog lub hau ntim rau hauv lub qhov cub microwave rau cua sov.
2. Hom duab los qhia
Cardboard cov thawv ntim khoom noj ceev yog ua los ntawm 300-350 grams bleach sulphate wood pulp paperboard ua cov ntaub ntawv raw, thiab yog ua los ntawm kev tuag-txiav cov ntawv cog lus lossis tuag-txiav nias, shaping thiab lwm cov txheej txheem los ntawm cov ntawv stamping zoo ib yam li cov ntawv ua. Txhawm rau tiv thaiv cov roj lossis dej pom, nws yog ib qho tsim nyog kom pleev xim rau saum npoo lossis siv tshuaj pleev ib ce ntxiv. Hauv kev tsim khoom thiab kev siv, nws tsis muaj tshuaj lom thiab tsis muaj kev phiv rau tib neeg lub cev. Txawm li cas los xij, cov kev xav tau zoo rau cov duab los qhia yog qhov siab dua, thiab tus nqi kuj tseem nce ntxiv.
3. Cov hmoov txhuv nplej siab hom
Cov khoom noj tau ceev ceev lub thawv nrog cov hmoov txhuv nplej siab raws li cov khoom siv raw, raws li lub npe cuam tshuam, nws yog tsim los ntawm kev sib xyaw thiab sib tsoo nrog cov hmoov txhuv nplej siab ua cov khoom siv raw, ntxiv cov khoom noj muaj fiber ntau thiab lwm yam ntxiv tau ntxiv. Nws txais yuav cov roj ntsha sib xyaw ua ke, polysaccharide hla sib txuas, calcium nws yog qhov ua kom zoo los ntawm ion chelation thiab lwm yam thev naus laus zis, thiab nws qhov kev siv kub yog -10 degrees rau +120 degrees, yog li nws tshwj xeeb tshaj yog rau tuav cov mov kub thiab tais kub. Nws tuaj yeem raug rhaub hauv qhov cub microwave lossis muab tso rau hauv tub yees kom siv.
4. Cog hom fiber ntau
Nyob rau hauv cov nqe lus ntawm kev tiv thaiv ib puag ncig zoo, cov cog fiber ntau lub thawv noj su tau pom tseeb zoo. Nws siv cov cog cog los ntawm cov nplej pob kws, txhuv hulls, bagasse, thiab lwm yam, raws li cov ntaub ntawv raw, thiab ntxiv rau cov chaw sawv cev, cov hlua khi, cov dej tsis haum thiab lwm yam kev pabcuam kom do los ntawm lub tshuab moulding. Nws tau ua los ntawm kev ziab, kho thiab tua kab mob. Cov kev ua liaj ua teb sab hauv tuaj yeem dhau los ua cov khoom lag luam raw khoom thiab pab txhawb rau kev siv thoob plaws ntawm kev ua liaj ua teb.
5. Lub thawv ntim khoom noj khoom haus hnab yas biodegradable
Cov ntaub ntawv raw rau hom lub thawv noj su yog degradable plastics. Lub npe hu ua degradable plastics yog qhov sib ntxiv ntawm qee qhov ntxiv ntawm cov khoom ntxiv, xws li cov neeg tsim tshuaj yeeb yaj kiab, cov hmoov txhuv nplej siab thiab lwm yam ntaub ntawv nyoos thaum lub sij hawm ua cov txheej txheem ntawm plastics. Nyob rau hauv txoj kev no, cov khoom siv yas yas uas siv tau pov tseg siv tawm thiab pov tseg. Tom qab kis tau tus xwm rau peb lub hlis, nws tuaj yeem tawg ua tej tawg ntaws los ntawm cov qauv ua tiav, yog li txhim kho ib puag ncig.
6. Lub thawv ntim noj su ntim biodegradable
Biodegradable su kem yog qhov khoom lag luam nce siab ib puag ncig. Nws siv cov hmoov txhuv nplej siab los ua cov khoom siv tseem ceeb, ntxiv txhua xyoo cov nroj tsuag fiber ntau cov hmoov thiab tshwj xeeb ntxiv rau, thiab yauv mus tshuaj thiab lub cev kev kho mob los ua biodegradable lub thawv khoom noj txom ncauj. Txij li cov hmoov txhuv nplej siab yog biodegradable natural polymer, nws tau decomposed rau hauv qabzib raws li kev ua ntawm cov kab mob me me, thiab thaum kawg mus rau hauv dej thiab carbon dioxide.
Tsis tas li ntawd, cov khoom siv sib xyaw nrog nws kuj yog cov khoom siv uas muaj qhov tsis zoo, yog li nws tuaj yeem hais tau tias nws tsis muaj kev cuam tshuam ib puag ncig. Lub hauv paus tseem ceeb ntawm cov khoom siv ua hmoov txhuv nplej siab tuaj yeem yog pob kws, qos yaj ywm, qos qos, qos ntoo thiab lwm yam nroj tsuag txhua xyoo. Lawm, feem ntau ntawm cov khoom siv ntau lawm biodegradable yog cov qoob loo khoom noj, uas tuaj yeem hloov kiag lub npov thawv hauv lub thawv noj su tsis muaj kuab paug rau ib puag ncig.