Plastic Recycling Symbol
Cov cim ntawm cov yas rov ua dua tshiab yog cov cim peb sab feem ntau pom nyob rau hauv qab ntawm cov thawv yas. Sab hauv daim duab peb sab yog cov lej 1-7, txhua tus sawv cev rau cov khoom sib txawv, qhia tias cov khoom ua los ntawm cov resin. Yog tias cov khoom tsim los ntawm ntau yam khoom sib txawv, cov khoom tseem ceeb lossis cov khoom siv tseem ceeb ntawm cov khoom tau qhia.
Cov cim dab tsi sawv cev rau cov khoom siv yas zoo li cas? Cov hauv qab no yog ib qho kev qhia ib los ntawm ib qho:
PET (polyethylene Terephthalate) - Khoom noj khoom haus- qib yas nrog lub neej txee
Thawj qhov kev siv cov khoom siv PET yog cov khoom siv fiber ntau, xws li zaj duab xis, sib nqus daim kab xev, thiab lwm yam. Nws tsis tau siv rau hauv lub raj mis dej haus kom txog rau thaum xyoo 1976. PET yog siv los ua lub thawv ntim, uas feem ntau hu ua (PET lub raj mis).
PET lub raj mis muaj qhov ua tau zoo thiab tawv tawv, yog qhov hnyav (tsuas yog 1/9-1/15 qhov hnyav ntawm lub raj mis), thiab yooj yim nqa thiab siv. Lawv siv lub zog me me los tsim, thiab airtight, tsis yog -volatile, thiab acid- thiab alkali-resistant. Yog li ntawd, nyob rau hauv xyoo tas los no, nws tau dhau los ua lub thawv ntim khoom tseem ceeb rau cov khoom xws li cov dej haus carbonated, tshuaj yej, kua txiv hmab txiv ntoo, ntim dej haus, cawv txiv hmab thiab kua ntses. Ntxiv rau cov kev siv no, PET kuj tseem siv tau rau hauv lub raj mis rau cov tshuaj ntxuav tes, tshuaj zawv plaub hau, roj ua noj, khoom noj khoom haus, khoom noj qab zib, tshuaj, tshuaj pleev ib ce, thiab dej cawv.
Cov khoom siv PET yog cua sov- tiv taus txog li 70℃thiab txias -resistant mus rau -20℃. Yog li ntawd, nws tsuas yog tsim nyog rau cov dej sov los yog txias. Yog hais tias nws tau ntim nrog cov kua kub kub los yog rhuab, nws yuav yooj yim deform thiab cov khoom tsim kev puas tsuaj rau tib neeg lub cev yuav yaj. Txawm li cas los xij, cov kws tshawb fawb tau pom tias hom yas no tuaj yeem tso cov carcinogens tom qab 10 lub hlis ntawm kev siv, uas yog tshuaj lom rau tib neeg lub cev. Yog li ntawd, PET lub raj mis dej haus yuav tsum muab pov tseg tom qab siv. Tsis txhob siv lawv ua khob dej lossis cov thawv ntim khoom rau lwm yam khoom kom tsis txhob muaj teeb meem kev noj qab haus huv uas yuav tsis tsim nyog.
HDPE (High Density Polyethylene) - Tshwj tsis yog tias tau qhia tshwj xeeb, Nws tsis pom zoo rau kev khaws khoom noj.
HDPE cov khoom muaj cov yam ntxwv ntawm qhov kub thiab txias tsis kam (110 degree), zoo hardness, siab mechanical zog thiab tshuaj corrosion kuj. Nws kuj yog ib yam khoom uas tsis yog - lom thiab nyab xeeb.
Nws yog feem ntau siv hauv cov thawv ntim khoom noj, xws li cov khoom siv tu thiab cov khoom siv da dej. Tam sim no, feem ntau cov hnab yas siv hauv cov khw muag khoom loj thiab cov khw muag khoom yog ua los ntawm cov khoom siv no. Vim nws hnov nkig heev, nws kuj yog feem ntau siv los ua lub hnab eeb.
HDPE ntim tuaj yeem siv rov qab siv dua tom qab ua tib zoo tu, tab sis cov thawv no feem ntau nyuaj rau kev ntxuav thiab tuaj yeem khaws cov khoom siv tu qub, ua qhov chaw yug me nyuam rau cov kab mob. Lawv tsis raug ntxuav kom huv si, yog li tsis pom zoo kom rov ua dua tshiab. Tsis tas li ntawd, cov hnab yas cim rau cov zaub mov tuaj yeem siv los tuav cov zaub mov, tab sis nws yog qhov zoo tshaj plaws kom tsis txhob kub rau hauv lub microwave.
PVC (Polyvinyl Chloride) - Tsis pom zoo siv los ua khoom noj khoom haus qib thiab yuav tsum tsis txhob raug tshav kub!
Cov khoom siv PVC tau tsim thaum ntxov thiab siv dav hauv cov khoom lag luam. Txij li thaum PVC muaj qhov zoo ib yam li lwm cov ntaub ntawv yas thiab zoo heev hauv kev ua thiab plasticity, nrog rau nws cov nqi qis, nws yog dav siv, tab sis feem ntau nyob rau hauv tsis yog - cov khoom noj xws li cov kav dej, raincoats, hnab tsev kawm ntawv, cov ntaub ntawv hauv tsev, yas films, yas thawv, thiab lwm yam. Nyob rau hauv lub thawv ntawv, nws yog feem ntau siv los sau cov roj zaub, detergents, ncuav qab zib thawv, thiab lwm yam.
Txawm li cas los xij, cov khoom siv yas ua los ntawm cov khoom siv no yog tsim los ua ob hom tshuaj lom thiab phom sij, tsim los ntawm ob qhov chaw:
1. Monomers ntawm vinyl chloride uas tsis yog tag nrho polymerized raug tso tawm thaum lub raj mis ua, txhaws, thiab rov ua dua txheej txheem. Ntev - nqus tau cov vinyl chloride tuaj yeem ua rau mob qog noj ntshav;
2. Cov khoom tsis zoo hauv cov yas yas. Ob yam khoom no tau yooj yim precipitated thaum raug kub thiab roj. Thaum cov tshuaj lom neeg nkag mus rau tib neeg lub cev los ntawm cov khoom noj, lawv tuaj yeem ua rau mob qog noj ntshav tau yooj yim.
Nyob rau hauv xyoo tas los no, tib neeg kev paub txog ib puag ncig tau nce, thiab cov thawv PVC tsis tshua muaj siv los ntim khoom noj. Yog tias koj tshwm sim los hla lub thawv PVC no, nco ntsoov tsis txhob tso cua sov thaum siv nws!
LDPE (Low Density Polyethylene) - Haum rau kev sib cuag zaub mov tab sis tsis yog cua sov
LDPE yog ib qho chaw nyob thoob plaws hauv lub neej niaj hnub no, tsis yog vim cov thawv ntim khoom, tab sis vim yog cov hnab yas koj pom txhua qhov chaw. Cov khoom tsim los ntawm nws tsis muaj ntxhiab tsw, tsis yog - tshuaj lom, thiab matte. Feem ntau siv rau hauv cov khoom noj khoom haus yas, cov khoom ntim khoom ntim cov yeeb yaj kiab, khoom noj khoom haus cling zaj duab xis, tshuaj, tshuaj ntim tshuaj, thiab lwm yam.
Lub tshav kub kuj tsis muaj zog. Feem ntau, tsim nyog PE cling zaj duab xis yuav yaj thaum qhov kub siab tshaj 110 degree, tawm hauv qee qhov kev npaj yas uas tsis tuaj yeem decomposed los ntawm tib neeg lub cev. Tsis tas li ntawd, thaum cov zaub mov tau qhwv hauv zaj duab xis thiab ua kom sov, cov rog hauv cov zaub mov tuaj yeem yooj yim yaj cov tshuaj phem los ntawm zaj duab xis.
Cov yeeb yaj kiab hauv tsev yuav tsum tsis txhob muab qhwv ib ncig ntawm cov zaub mov thiab ua kom sov kom tsis txhob muaj cov rog hauv cov zaub mov los ntawm kev ua kom cov khoom tsis zoo hauv cov yeeb yaj kiab. Ua ntej microwave ncu, nco ntsoov tshem cov zaj duab xis los ntawm cov khoom noj.
PP (polypropylene) - Microwave - nyab xeeb! Yuav luag Universal Khoom noj khoom haus - qib yas khoom
PP cov ntaub ntawv yog resistant rau kub ntawm 130℃thiab muaj ib tug melting point txog 167 degree. Cov khoom tuaj yeem ua kom tsis muaj menyuam los ntawm chav thiab muaj qhov zoo ntawm cov kua qaub thiab alkali tsis kam, tshuaj tiv thaiv, thiab kev sib tsoo. Nws tseem yog lub thawv yas nkaus xwb uas yog microwave- nyab xeeb thiab rov siv tau tom qab ua tib zoo tu.
PP ntim khoom feem ntau yog siv rau hauv cov kua mis thiab cov mis mis, thiab tseem siv los tuav 100% cov kua txiv hmab txiv ntoo, yogurt, kua txiv hmab txiv ntoo, cov khoom siv mis nyuj (xws li paj npleg), thiab lwm yam. Cov thawv loj muaj xws li thoob, thoob khib nyiab, ntxhua khaub ncaws, pob tawb, thiab lwm yam.
Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qee cov tuam txhab lag luam, vim yog cov nqi txiav txim siab, feem ntau siv PP rau cov thawv ntim khoom, thaum siv PE lossis PS rau lwm cov khoom ntim, xws li lub raj mis thiab kaw. Yog li, nws raug pom zoo kom tshem lub raj mis thaum lub microwave- pov thawj.
PS (polystyrene) - Cov Khoom Siv Rau Cov Thawv Khoom Noj Tam Sim No uas Yuav Tsum Tsis Tau Rhaub ncaj qha
PS muaj qhov nqus dej tsawg thiab qhov ruaj khov zoo, thiab tuaj yeem ua tiav los ntawm kev txhaj tshuaj molding, compression molding, extrusion, thiab thermoforming. Feem ntau, PS yog categorized li unfoamed los yog foamed, nyob ntawm seb nws puas tau foamed.
1. Unfoamed PS feem ntau yog siv rau hauv cov khoom siv hauv tsev, khoom ua si, ntawv sau, thiab lwm yam kev siv. Nws kuj yog feem ntau ua rau hauv cov thawv rau cov khoom siv mis nyuj fermented (xws li Yakult, Jian Jian Mei, Duo Duo, thiab lwm yam khoom siv mis los yog lactic acid). Nyob rau hauv xyoo tas los no, nws kuj tau siv dav hauv cov khoom siv pov tseg.
2. Foamed PS (feem ntau hu ua Styrofoam) siv tus neeg sawv cev foaming kom nthuav dav 20 mus rau 100 zaug thaum lub sijhawm tsim khoom. Nws yog siv los ua cov khoom ntim cushioning rau cov khoom siv hauv tsev lossis cov khoom siv ntaub ntawv, lossis ua kom sov-cov ntaub ntawv rwb thaiv tsev rau cov thawv dej khov, cov thawv ntses, thiab lwm yam.
PS cov khoom siv feem ntau yog siv los ua lub tais- zoo li lub thawv ntim khoom noj thiab cov thawv ntim khoom noj ceev. Txawm hais tias PS cov khoom yog ob qho tib si cua sov- tiv taus thiab txias- tiv taus, cov tshuaj yuav raug tso tawm thaum kub siab dhau. Yog li ntawd, tsis txhob ntxiv nws ncaj qha rau hauv lub microwave! Tsis tas li ntawd, tsis txhob siv cov ntim khoom noj ceev rau cov khoom noj kub. Nws tsis tuaj yeem siv los tuav cov kua qaub uas muaj zog (xws li kua txiv kab ntxwv) lossis cov tshuaj muaj zog alkaline vim tias nws yuav decompose polystyrene uas muaj teeb meem rau tib neeg lub cev.
Cov Khoom Siv PC Thiab Lwm Yam - Cov Khoom Noj Muaj Teeb Meem- qib yas khoom
PC yog cov khoom siv dav siv, tshwj xeeb tshaj yog hauv cov me nyuam lub raj mis thiab qhov chaw khob. Nws yog qhov tsis txaus ntseeg vim tias nws muaj bisphenol A. Qhov kub thiab txias dua, qhov seem seem ntawm bisphenol A raug tso tawm thiab tso tawm sai dua. Yog li ntawd, dej kub yuav tsum tsis txhob muab khaws cia rau hauv lub thawv PC.
Txawm hais tias cov kws tshaj lij tau taw qhia tias txoj kev xav, tsuav yog BPA 100% hloov mus rau hauv cov qauv yas thaum lub sijhawm tsim khoom PC, nws txhais tau tias cov khoom tsis muaj BPA txhua, cia nyob ib leeg. Txawm li cas los xij, tsis muaj chaw tsim khoom tuaj yeem lav tias bisphenol A tau hloov pauv tag nrho, yog li koj tseem yuav tau ceev faj thaum siv. Yog tias ib qho me me ntawm bisphenol A tsis hloov mus rau hauv PC yas qauv, nws tuaj yeem nkag mus rau hauv cov zaub mov lossis dej haus.
Yog li ntawd, yuav tsum ceev faj ntxiv thaum siv lub thawv yas no. Yog tias lub raj mis muaj 07, cov kev ntsuas hauv qab no tuaj yeem txo qhov kev pheej hmoo:
1. Tsis txhob tshav kub los yog raug tshav ntuj ncaj qha thaum siv. Tsis txhob ntxuav lub kettle hauv lub tshuab ntxuav tais diav lossis lub tshuab ziab khaub ncaws.
2. Ua ntej siv, ntxuav nrog baking soda thiab dej sov thiab qhuav nyob rau hauv chav tsev kub.
3. Yog tias lub thawv ntim tau poob lossis puas lawm, nws raug nquahu kom tsis txhob siv nws, vim tias yog tias muaj cov grooves zoo ntawm cov khoom yas, nws yooj yim rau cov kab mob zais.
4. Tsis txhob siv cov khoom siv yas laus dua.
Kev paub txog kev txheeb xyuas cov khoom lag luam phom sij
Pom:Cov khoom siv yas uas tsim nyog muaj qhov chaw du, cov xim ntshiab thiab pob tshab, thiab kev ua haujlwm zoo; cov khoom yas tsis tsim nyog muaj cov xim huab.
Olfaction:Cov khoom yas tsim nyog tsis muaj ntxhiab tsw ntawm chav sov; cov khoom yas uas tsis tsim nyog muaj cov ntxhiab tsw tsw ntxhiab los yog tsis kaj siab.
Tactile:Cov khoom siv yas tsim nyog muaj kev xav zoo thiab yoog raws; Cov khoom yas uas tsis tsim nyog muaj kev xav ntxhib, tsis yooj yim, thiab tej zaum yuav muaj ntxhiab tsw.
Kev siv cov ntim yas kom zoo
Ntau lub thawv yas thiab cov tais diav kuj ua rau muaj kev nyab xeeb. Ua tib zoo saib xyuas cov ntsiab lus hauv qab no:
(1) Tsis txhob siv cov khoom noj khoom haus thiab cov khoom siv ua noj ua haus uas tsim los ntawm cov chaw tsim khoom tsis raug cai.
Txhawm rau txo cov nqi thiab ua kom tau txais txiaj ntsig zoo tshaj plaws, ntau lub tuam txhab feem ntau tsim cov khoom yas yam tsis tau hais meej meej tias lawv xav siv. Tsis txhob siv cov thawv no los khaws cov khoom noj kub, tshwj xeeb tshaj yog cov khoom noj ua kua thiab cov khoom noj uas muaj roj ntau. Qhov no yog vim cua sov thiab roj tuaj yeem ua rau cov khoom tsis zoo tuaj yeem tawm thiab ua paug rau cov zaub mov.
(2) Siv cov thawv yas tshwj xeeb uas tsim los rau lub qhov cub microwave uas tsim los ntawm cov tuam txhab tsis tu ncua.
Microwave-cov thawv yas uas muaj kev nyab xeeb yuav tsum yog translucent, tsis muaj xim, thiab cua sov-resistant. Thaum cua sov cov zaub mov nrog cov dej siab hauv lub microwave, PP cov thawv yas tuaj yeem siv tau; Thaum cua sov cov tais diav los yog cov khoom noj uas muaj roj ntau, yuav tsum tau siv cov thawv PC uas muaj zog tiv taus kub; yog tias cua sov tsis yog - cov zaub mov ua kua, nws tsis pom zoo kom siv cov thawv yas.
Thaum cua sov cov zaub mov hauv lub microwave, nws yog qhov zoo tshaj plaws los siv cov iav ntim lossis cov plooj (porcelain) yam tsis muaj cov xim sab hauv..
(3) Tsis txhob siv cov khoom uas tsis yog- cua sov- cov thawv ntim khoom los tuav cov zaub mov kub.
Qee lub raj mis yas thiab lwm lub thawv yuav ua mos thiab deformed thaum raug tshav kub. Tsis txhob sim siv cov ntim zoo li no los khaws cov zaub mov overheated. Thaum cov plastics no muaj kev nyab xeeb ntawm chav tsev kub, lawv tuaj yeem decompose thiab tso cov khoom tsis zoo ntawm qhov kub thiab txias. Nws yog ib qho uas pom cov neeg muab dej kub los yog tshuaj yej rau hauv cov dej ntxhia lossis dej haus, ib qho kev coj ua uas ua rau muaj kev phom sij rau kev noj qab haus huv.
(4) Tsis txhob siv cov khoom siv nrog cov khoom siv yas tsis zoo.
Qee cov khoom siv yas ntawm cov khoom siv hauv chav ua noj (xws li lub lauj kaub tais diav) yuav tso cov ntxhiab tsw ntxhiab thaum raug kub. Cov tshuaj no kuj yog tshuaj lom thiab nqus tau ntau dhau tuaj yeem ua rau tib neeg noj qab haus huv. Qee qhov qis- cov hluav taws xob zoo hluav taws xob kuj tsim cov ntxhiab tsw ntxhiab thaum cua sov dej. Cov hom yas kettles no kuj tsis zoo rau tib neeg lub cev. Nws tsis pom zoo kom siv hom khoom no. Yog tias koj ntsib cov khoom no, nws raug nquahu kom hloov nws sai li sai tau.
YUAV TSUM TAU TXAIS PLASTIC PACKING CONTAINERS NO
