2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-09 13:23
Hauv lub neej niaj hnub, nws yog ib qho tseem ceeb heev kom paub txhua yam txog zaj duab xis polypropylene. Muaj biaxial taw qhia thiab ua cov yeeb yaj kiab, CPP thiab lwm hom yeeb yaj kiab rau kev luam ntawv. Nws kuj tseem yuav tsum tau kawm cov ntaub ntawv los ntawm GOST thiab lub hom phiaj ntawm cov khoom siv no hauv kev xyaum.
Nws yog dab tsi?
Qhov tseem ceeb tshaj plaws ntawm cov yeeb yaj kiab polypropylene yog nws nruj heev thiab tsis tuaj yeem tiv taus dej . Tsis tas li, nrog nws txoj kev pab, kev nyab xeeb ntawm cov khoom lag luam khoom noj khoom haus, lwm yam khoom lag luam thiab cov ntaub ntawv raug lees paub. Cov polypropylene casing yog siv hauv kev tsim kho thiab kho kev lag luam. Nws ntseeg tau tiv thaiv cov suab nrov tsis txaus ntseeg. Cov txheej txheem tsim khoom nyob ntawm seb hom khoom tshwj xeeb.
Nrog rau kev hloov pauv ntawm cov txheej txheem ua haujlwm thiab cov khoom siv yooj yim, cov khoom xav tau yog muab nrog kev pab ntawm cov tshuaj tshwj xeeb ntxiv .… Feem ntau, cov khoom siv tau los ntawm kev hu ua txheej txheem extrusion. Kev ua tshwj xeeb thiab thev naus laus zis thev naus laus zis xyuas kom ntim khoom zoo . Cov muaj pes tsawg leeg ntawm polypropylene tsuas muaj cov pa roj carbon thiab hydrogen, uas ua kom muaj kev nyab xeeb siab tshaj plaws ntawm cov khoom siv no.
Kev sib txuas sib txuas ua ke nyob rau hauv ob txoj hauv kev muab qhov sib piv qhov sib piv hauv cov khoom sib tw.
Saib
Biaxially oriented polypropylene zaj duab xis (luv ua BOPP lossis, hauv Latin, BOPP) yog qhov zoo tshaj plaws haum rau ntim tau yooj yim . Tib yam khoom siv kuj tuaj yeem raug hu ua biaxially oriented polypropylene. Kev ncab hauv ob txoj kab lus tau lees tias tsis tsuas yog lub teeb, tab sis kuj muaj zog zoo ntawm cov khoom. Cov khoom siv taw qhia yog hu ua OPP kom luv. Qhov kev hloov pauv yam tsis muaj kev taw qhia feem ntau hu ua CPP, nws tseem hu ua "caste".
Hom yooj yim PP yog qhov zoo tshaj rau lwm cov polymers siv rau ntim. Nws muaj zog dua polyvinyl chloride lossis HDPE qib polyethylene. Tsis tas li, cov khoom siv pob tshab no zoo nkaus li zoo nkauj zoo nkauj. Nyob rau sab saum toj ntawm nws, koj tuaj yeem luam ntawv thiab duab. Lamination thiab kev thov txheej txheej hlau raug tso cai heev; cov khoom lag luam pheej yig yog tsim rau:
- khaws ntau hom zaub mov;
- ntim cov ntawv luam tawm thiab ntawv sau;
- siv raws li lub ntim rau textiles, paj, ntim khoom kho mob.
Thiab tseem, zaj duab xis polypropylene tau ncab hauv ob txoj kab muaj, tsis ntseeg, muaj cov yam ntxwv zoo dua .… Ntawm cov yeeb yaj kiab muaj muag, tsuas yog tus tsiaj ntawv muaj qhov sib zog thiab lub zog sib piv. Yog li ntawd, cov khoom lag luam no tsim nyog siv rau ntawm cov kab ntim khoom ceev. Cov yam ntxwv tshwj xeeb yog qhov ci ntawm qhov saum npoo.
Polypropylene yuav tuaj yeem tiv taus txias txias mus rau -50 thiab cua sov txog li +100 degrees. Yog li ntawd, koj tuaj yeem siv nws ruaj ntseg rau ntim cov khoom lag luam uas raug rau khov khov. Cov khoom thaiv ntawm zaj duab xis yog qhov siab heev. Nws ua tau zoo tiv thaiv oxygen thiab carbon dioxide. Cov khoom siv tiv thaiv kab mob UV thiab tiv tauj nrog dej. Kev sib piv ntawm BOPP nrog lwm cov ntaub ntawv qhia tias zaj duab xis no xa mus:
- 3 zaug tsawg dua li ib txwm polyethylene;
- 5 zaug tsawg dua polyethylene terephthalate;
- 6 zaug tsawg dua polyvinyl chloride.
Nws tsis muaj nws tus kheej kiag li. Nws yog dav siv rau flexo luam ntawv. Txiav thiab vuam cov khoom siv yog txheej txheem yooj yim heev. BOPP kuj tseem muaj qhov ua kom pom tseeb me me. Koj tuaj yeem teeb tsa qib tseeb ntawm kev ua raws li cov khoom ntim.
Lub thickness tuaj yeem sib txawv ntawm 12 txog 40 microns. Qhov dav tso cai yog los ntawm 1 txog 150 cm . Rau kev luam ntawv lub hom phiaj, nws tus kheej-nplaum zaj duab xis tau siv dav. Kev tiv thaiv te ntawm qhov kev xaiv no yam tsawg kawg tsis zoo dua li ntawm lwm cov kev daws teeb meem. Adhesion tso cai rau txheej kom siv nrog kev ntseeg siab ntawm ob qho tib si du thiab ntxhib substrates. Cov khoom siv yog qhov tsim nyog rau kab ntawv tsis siv neeg; muaj kev daws teeb meem nrog xim dawb thiab xim hlau xim.
Cov khoom no raug rau nruj GOST R 58061 - 2018. Tus txheej txheem qhia txog hom kev ua yeeb yaj kiab hauv qab no:
- daim ntaub
- ib nrab lub tes tsho;
- lub tes tsho tsis tu ncua;
- tais los yog ob npaug rau-tes tsho hom.
Cov qauv txheej txheem yooj yim:
- elongation ntawm so;
- lub zog ntawm welded seams;
- turbidity ntawm qhov pob tshab (hauv feem pua nrog kev hwm rau qhov ci ntsa iab);
- zoo li qub thiab dynamic coefficients ntawm kev sib txhuam quab yuam;
- ua kom cov nplaim ntawm ob sab kho;
- oxygen permeability;
- permeability rau cov dej ua pa;
- thermal shrinkage theem;
- ceev.
Teem caij
BOPP zaj duab xis tuaj yeem ua pob tshab, ua hauv ib txheej … Cov monofilm no tsis muaj qhov ua kom sov sov. Nws qee zaum hu ua paj ntim. Dhau li ntawm cov paj hauv tsev, cov tshuaj no yog qhov zoo rau kev ntim khoom plig thiab lamination. Nws yog qhov yooj yim los ntim ntau yam khoom tsim khoom hauv BOPP monofilm; nws kuj tseem siv rau kev yees duab albums. Cov khoom no tseem tuaj yeem yog "lub hauv paus" zoo rau daim kab xev thiab daim kab xev. Txawm li cas los xij, qhov tsis muaj qhov txuas yog qhov teeb meem loj. Kev daws teeb meem zoo dua hauv qhov no yog kev hloov pauv hloov ua ke nrog ob txheej txheej sov sov.
Cov khoom siv no zoo heev zawv zawg thiab weldability. Nws yog tus yam ntxwv los ntawm kev nce pob tshab.
Yog li ntawd, qhov kev hloov kho no tau pom zoo rau cov tuam ntxhab nrhiav los ua kom pom qhov zoo ntawm lawv cov khoom thiab qhia nws nyiam ntawm cov neeg sib tw loj. Cov tshuaj no yuav ua:
- rau confectionery;
- cov khoom loj;
- ntawv sau;
- cov khoom lag luam textile;
- perfumery khoom;
- tshuaj pleev ib ce
Hom pearl ntawm zaj duab xis muaj pearlescent lossis xim dawb. Nws yog peb txheej txheej ua ke, ib qho ntawm cov txheej uas muaj lub qhov me me. Nws yog txheej no uas tsim cov xim "hlaws". Zaj yeeb yaj kiab ntawm pawg no tau muab tso rau:
- dej khov;
- khoom noj txom ncauj curd;
- cov khoom qab zib;
- daim ntawv lo
Yob zaj duab xis tuaj yeem siv rau kev luam ntau yam ntawv thiab duab . Cov duab tau tsim los siv cov txheej txheem flexography. Qhov kev daws teeb meem no ua kom muaj xim zoo nkauj thiab tsis sib xws ntawm cov phiaj xwm tsim. Yooj yim kom tau txais nkig, cov ntawv zoo . Nyias, nws tsim nyog hais txog zaj duab xis metallized; nws txawv los ntawm cov qauv peb txheej txheej los ntawm kev siv cov tshuaj txau txhuas. "Winged hlau" lav qhov tsim nyog thaiv cov khoom muaj feem cuam tshuam nrog oxygen, dej ua pa. Nws zoo kawg nkaus txwv lub teeb thiab tsis muaj kev cuam tshuam rau kev tsim cov kab mob hauv zej zog.
Hom hlau ntim cov ntim yuav ua rau lub txee lub neej ntawm cov khoom noj thiab ua rau qeeb cov kis ntawm cov rog. Cov ntawv qhwv qee zaum hu ua "luam yeeb", vim nws feem ntau siv los tso cov luam yeeb. Tsis tas li cov khoom siv no yog siv rau CDs thiab tshuaj yej. Perforated BOPP zaj duab xis muaj qhov qhib me me (0.3-1.2 hli). Cov qhov no yog tsim los siv "kub perforation". Nws lav lub zog thiab zoo nkauj zoo nkauj ntawm cov khoom.
Perforation muab "ua pa" ntawm qhov ntim sab hauv. Qhov kev daws teeb meem no yog qhov zoo tshaj plaws rau cov khoom cog, khoom siv nqaij thiab ntses.
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