PE breathable membrane yog ib hom tshiab ntawm cov khoom siv polymer uas tsis muaj dej. Los ntawm cov txheej txheem tsim khoom, cov kev cai ntawm cov txheej txheem siab dua li cov khoom siv tsis muaj dej dav dav. Tib lub sijhawm, los ntawm qhov pom ntawm qhov zoo, cov membrane breathable kuj muaj cov haujlwm uas lwm cov khoom siv tsis muaj dej tsis muaj.

PE zaj duab xis breathable yog ib yam khoom tshiab uas tab tom loj hlob sai hauv ntiaj teb. Nws hu ua zaj duab xis breathable. Nws yog siv dav hauv ntau qhov chaw vim nws cov yam ntxwv breathable thiab impermeable.

1. Cov qauv ntawm PE breathable membrane
Cov khoom tseem ceeb ntawm PE breathable membrane yog polyethylene, uas yog cov khoom siv polymer synthesized los ntawm polyethylene. Hauv kev tsim polyethylene, me me ntawm 4-carbon lossis 8-carbon a-olefin ntxiv rau ua ib qho comonomer. Txawm li cas los xij, vim tias qhov ntau ntawm a-olefin siv yog tsawg heev, ntau yam ntawm cov yam ntxwv polyethylene tseem khaws cia.

pe breathable zaj duab xis ntau lawm kab

Polyethene yog cov khoom siv dawb waxy translucent, yoog tau thiab nyuaj, thiab tuaj yeem muab faib ua cov polyethylene qis-density (LDPE) thiab polyethylene siab-density (HDPE).

LDPE yog ua los ntawm ethylene nyob rau hauv siab siab (98-250mpa), nrog rau qhov ceev ntawm li 0.91-0.92g / m3. HDPE yog tsim los ntawm ethylene polymerized nyob rau hauv 1.0mpa siab, nrog rau qhov ceev dua, txhua qhov chaw 0.94-0.96g / m3.

Polyethene tsis muaj tshuaj lom thiab muaj cov khoom dielectric zoo heev. Nws qhov kub hloov iav yog li -125 ℃. Polyethene muaj kev ruaj khov tshuaj zoo heev, tuaj yeem tiv taus acid thiab alkali ntawm chav tsev kub, tab sis yooj yim rau oxidized los ntawm lub teeb thiab cua sov, thiab kuj tuaj yeem raug photodegradation hauv qab lub teeb ultraviolet. Polyethene kuj muaj cov khoom siv kho tshuab zoo heev. Qhov crystalline ib feem muab polyethylene lub zog siab dua, thiab qhov tsis yog crystalline muab nws qhov yooj ywm zoo.

2. Cov yam ntxwv ntawm PE breathable membrane
Piv nrog cov ntaub uas tsis ua pa tau, PE breathable membranes muaj cov yam ntxwv hauv qab no:
1. Nws tuaj yeem nkag mus rau hauv roj tab sis tsis yog dej kom nws siv tau ua cov khoom siv tsis muaj dej thiab tiv taus dej noo;
2. Nws tuaj yeem txhim kho qhov cua nkag mus rau hauv tus neeg siv ib puag ncig, uas yog qhov zoo rau kev ua pa ntawm daim tawv nqaij;
3. Vim nws cov yam ntxwv raw khoom, PE breathable membrane yog ib yam khoom tshiab, ib puag ncig zoo thiab tsis ua rau ib puag ncig puas tsuaj.

3. Cov txheej txheem ntws ntawm PE breathable zaj duab xis
Los ntawm qhov kev xav ntawm kev siv tshuab ua tiav, muaj ob txoj hauv kev ua tiav tseem ceeb rau cov ntaub ua pa: txoj kev casting zaj duab xis tiaj tus thiab lwm qhov yog txoj kev blown zaj duab xis, uas txoj kev casting siv ntau dua.
Cov txheej txheem tseem ceeb ntawm txoj kev casting yog raws li nram no:
PE raw khoom + porogen-sib tov thiab metering-extrusion granulation-extrusion casting-stretching thiab teeb tsa-txias-trimming-coiling.
Hauv cov txheej txheem tsim cov yeeb yaj kiab PET breathable, cov txheej txheem ncab ntawm PE Breathable Film Production Line cuam tshuam rau kev ua yeeb yaj kiab zoo.
Thaum lub sijhawm ncab, thaum lub zog khi ntawm cov khoom me me caco3 thiab cov polymer PE nyob ib puag ncig tsawg dua li lub zog deformation ntawm PE polymer los ntawm kev ncab, cov polymer yuav sib cais raws ntug ntawm caco3, ua rau muaj qee cov khoom me me. Cov qhov tsis tuaj yeem tso cai rau cov kua dej hla dhau, tab sis tsuas yog cov roj molecules xwb, yog li ntawd cov zaj duab xis ncab muaj lub luag haujlwm ntawm kev tiv thaiv dej thiab ua pa.
Qhov loj ntawm qhov cavity tuaj yeem hloov kho nyob ntawm cov txheej txheem xws li qhov loj me, cov duab, txoj kev ncab, thiab qhov sib piv ntawm cov caco3.
Thaum qhov kub thiab txias ncab yog nyob rau ntawm tus nqi tshwj xeeb, raws li qhov piv ntawm kev ncab nce, PE zaj duab xis ua pa tau qhov khoob ntawm qhov nce, thiab qhov permeability ntawm huab cua nce, thaum qhov kev ua tau zoo ntawm kev ncab zuj zus; raws li qhov tuab nce, qhov permeability ntawm huab cua txo qis.

4. Cov teeb meem thiab kev tiv thaiv uas feem ntau ntsib hauv cov txheej txheem tsim cov yeeb yaj kiab PE breathable.

1 Cov tshuaj tsis muaj zog
Lub zog sib xyaw ntawm PE zaj duab xis ua pa tau qis heev lossis xoom, uas tsis tuaj yeem ua tau raws li cov neeg siv khoom xav tau txhua, ua rau cov khoom pov tseg. Vim yog qhov tshwj xeeb ntawm cov txheej txheem tsim cov yeeb yaj kiab ua pa PE, qhov nro ntawm qhov chaw qis, cov ntsiab lus ntawm cov neeg sawv cev nplua siab, thiab qhov chaw ua qias tuaj yeem ua rau cov khoom sib xyaw tsis muaj zog.
Kev nruj ntawm qhov chaw qis
Nyob rau hauv ib txwm muaj xwm txheej, PE zaj duab xis ua pa tau qhov nro ntawm qhov chaw rau kev sib xyaw qhuav yuav tsum siab tshaj 38 dyn / cm ua ntej nws siv tau.
Cov kev xyaum tau ua pov thawj tias yog tias qhov nro ntawm qhov chaw ntawm PE breathable membrane qis dua 38dyn / cm, nws yuav ua rau muaj qhov tshwm sim ntawm lub zog sib xyaw qis. Hauv qab 36dyn / cm, lub zog ua ke yuav qis heev lossis xoom.
Tib lub sijhawm, lub zog sib xyaw kuj muaj feem cuam tshuam nrog qhov tuab ntawm PE zaj duab xis ua pa. Yog tias nws tsawg dua 30 microns, nws tuaj yeem sib xyaw ua ke hauv txoj kev ntawm 36-38dyn / cm. Thaum lub thickness yog 30-50 microns, thiab qhov nro ntawm qhov chaw yog 37dyn / cm, cov qauv sib xyaw raug txiav txim siab. Xws li OPP / PE, cov nyhuv ua ke tuaj yeem ua tau raws li qhov yuav tsum tau ua. Tab sis thaum lub thickness ntau dua 50 microns, nws tsis siv tau yog tias lub thickness tsawg dua 38dyn / cm.
Nov yog ntau cov ntaub ntawv rau kev siv:
Qhov kev nruj ntawm qhov chaw ntawm PE breathable membrane yog qhov loj heev thaum nws nyuam qhuav tsim tawm, tab sis raws li lub sijhawm dhau mus, qhov kev nruj ntawm qhov chaw maj mam txo qis. Feem ntau, PE breathable membrane tuaj yeem khaws cia rau 3-6 lub hlis, tab sis nws tuaj yeem khaws cia rau 3-6 lub hlis thaum lub caij ntuj sov. Lub sijhawm khaws cia hauv lub caij noo noo yog qhov zoo tshaj plaws tsis pub tshaj ob lub hlis.
Kev xyaum ua pov thawj tias PE zaj duab xis ua pa tau qhov siab ntawm qhov nro ntawm qhov chaw muaj kev sib raug zoo heev nrog nws cov tuab thiab ib puag ncig. Qhov kub thiab av noo ntawm ib puag ncig siab dua, qhov nrawm ntawm qhov nrawm ntawm qhov chaw sai dua, thiab zaj duab xis tuab dua, qhov nrawm dua.
Yog li ntawd, qhov chaw tso zaj duab xis PE breathable feem ntau yuav tsum tsis pub tshaj peb lub hlis, tshwj xeeb tshaj yog thaum lub caij los nag. Yuav tsum tau them sai sai rau qhov cua thiab cua ntawm qhov chaw khaws khoom yog tias lub sijhawm khaws cia ntev dhau rau qee qhov laj thawj, thaum rov siv dua, ntxiv rau kev tshuaj xyuas dov-los-yob, nws yog qhov tsim nyog los xav txog seb puas yuav txuas ntxiv siv cov khoom sib xyaw raws li lub hom phiaj ntawm cov khoom sib xyaw, kom tsis txhob poob.

Kev cuam tshuam ntawm cov khoom ntxiv
Thaum PE zaj duab xis ua pa tau tsim ua zaj duab xis, qee cov khoom ntxiv, xws li cov neeg sawv cev antistatic, cov neeg sawv cev plam, thiab cov neeg sawv cev antistatic, feem ntau yuav tsum tau ntxiv raws li nws siv.
Cov tshuaj ntxiv no tsis ruaj khov tom qab tsim zaj duab xis lossis sib xyaw, tshwj xeeb tshaj yog cov neeg sawv cev slip, uas feem ntau siv erucamide lossis oleamide.
Muaj ob qho laj thawj rau qhov txo qis ntawm lub zog sib xyaw vim yog cov neeg sawv cev plam:
① Tom qab muab cov zaj duab xis PE ua pa tau ib ntus, tus neeg sawv cev yuav txav mus rau qhov chaw ntawm cov zaj duab xis PE ua pa tau los ua ib txheej nyias nyias. Cov txheej tuab no thaiv kev sib txuas ntawm cov nplaum thiab tus cwj pwm ntawm cov zaj duab xis PE ua pa tau, ua rau kev sib txuas tsis cuam tshuam nrog qhov chaw ntawm cov zaj duab xis PE ua pa tau. Cov PE molecules sib cuag, qhov kev sib txuas ua ke pib tsis tob, thaum lub sijhawm kho nce ntxiv, lub zog ua ke tsis hloov pauv ntau, thiab lub zog ua ke ib txwm nyob qis lossis xoom.
Yuav tsum siv cov yeeb yaj kiab PE uas ua pa tau zoo rau cov kev xav tau tshwj xeeb, thiab nws yuav tsum tsis txhob tso tseg ntev dhau rau hauv qhov xwm txheej ib txwm muaj. Yog tias PE daim nyias nyias ua pa tau siv rau lub sijhawm ntev rau qee qhov laj thawj, nws yog qhov zoo tshaj plaws los tso PE daim nyias nyias ua pa ntawm qhov kub ntawm 60-70 ℃ rau ntau tshaj 8 teev ua ntej sib xyaw. Lub sijhawm no, tus neeg sawv cev plam yuav ua tsis tiav ib feem, yog li rov mus dua lub sijhawm no. Laminating tsis muaj teeb meem ntawm lub zog sib xyaw qis, tab sis PE daim nyias nyias ua pa tsis muaj cov khoom plam siab lawm.
② Qhov kev sib txuas ua ke thawj zaug yog qhov txais tau, tab sis thaum lub sijhawm kho kom zoo dua, lub zog ua ke yuav qis dua thiab qis dua, thiab cov hmoov dawb tshwm sim ntawm ob txheej.
Qhov no yog vim tias cov khoom siv PE uas muaj cov roj hmab siab siv rau hauv kev tsim cov yeeb yaj kiab PE ua pa tau. Vim tias cov neeg sawv cev nplua nplua muaj cov ntsiab lus siab hauv cov yeeb yaj kiab, kev txav mus los ntawm cov tshuaj nplaum nplua hauv cov yeeb yaj kiab ua kom muaj zog thaum lub sijhawm kho ntawm qhov kub siab (40-50 ℃). Muaj ntau cov tshuaj nplaum nplua nplua tsiv mus rau ob sab ntawm cov yeeb yaj kiab. Raws li lub sijhawm nce ntxiv, qhov ntau ntawm kev tsiv mus rau qhov chaw maj mam nce ntxiv. Nws txoj kev tsiv mus rau rhuav tshem cov txheej txheem sib txuas ntawm cov nplaum thiab PE molecules thiab yuav tsim. Lub zog sib txuas tsis muaj zog raug rhuav tshem. Lub sijhawm ntev dua, lub zog rhuav tshem muaj zog dua thiab lub zog sib xyaw qis dua.
Hauv qhov no, feem ntau yuav tsum ua kom qhov kub ntawm kev kho kom zoo dua qub kom cov nplaum ua haujlwm sai dua li qhov ceev ntawm cov khoom siv los ua kom cov khoom siv sib xyaw ua ke ntau dua li cov khoom siv uas ua rau cov khoom siv sib xyaw ua ke ntau dhau.

Qhov chaw paug
PE cov ntaub ua pa feem ntau tsis muaj kuab paug thaum lub sijhawm tsim khoom, tab sis ib qho ntawm lawv yooj yim tsis quav ntsej: kev ua qias tuaj ntawm cov kua dej dyne.
Ntau lub tuam txhab tsim cov PE breathable membrane siv cov tshuaj dyne uas lawv tus kheej npaj los sim qhov nro ntawm daim nyias nyias. Cov kua dyne feem ntau yog sib xyaw ntawm ethylene glycol monoethyl ether, uas yog cov kua tsis muaj xim thiab pob tshab. Yog tias nws raug kuab lom nrog lub roller qhia vim nws qhov qeeb qeeb volatilization, zaj duab xis yuav lwj thaum dhau los ntawm lub roller qhia. Cov tshuaj dyne nkag mus rau hauv PE breathable membrane qhov chaw thiab sib xyaw ua ke nrog cov PE molecules. Nws tsis sib txuas nrog cov binder molecules tom qab sib xyaw, ua rau lub zog sib xyaw hauv zos yog xoom. Qhov xwm txheej no nyuaj rau nrhiav hauv kev tshuaj xyuas ua ntej.

2 lub sib xyaw ua ke dawb taw tes.
Qhov xwm txheej no yooj yim tshwm sim ntawm PE zaj duab xis dawb mis nyuj; feem ntau, zaj duab xis dawb mis nyuj raug ntxiv nrog qee qhov ntawm cov masterbatch dawb: concentrated titanium dioxide. Vim yog qhov zoo sib txawv ntawm cov xim masterbatch, qhov loj me thiab qhov nyuaj ntawm cov titanium dioxide uas muaj nyob hauv yog sib txawv, ua rau muaj qhov zoo sib txawv ntawm cov zaj duab xis dawb mis nyuj tsim tawm tom qab sib xyaw thiab qhov ci ntsa iab ntawm qhov chaw sib txawv. Yog tias qhov chaw ntawm zaj duab xis dawb mis nyuj zoo li ntxhib thiab muaj qhov pitting los ntawm sab, feem ntau ntawm cov khoom sib xyaw nrog cov zaj duab xis zoo li no yuav muaj cov pob dawb. Cov kev daws teeb meem ib txwm rau qhov teeb meem no yog raws li nram no: Ib qho yog kom nce qhov ntau ntawm cov nplaum. Qhov thib ob yog rov luam ib txheej ntawm cov kua mem dawb. Txawm hais tias siv txoj kev twg los xij, tus nqi yuav nce ntxiv, yog li PE zaj duab xis yuav tsum tau kuaj xyuas nruj me ntsis ua ntej siv.

3 Tom qab sib xyaw ua ke, cov khoom tiav lawm ua astringent
Qhov xwm txheej no tau tshwm sim hauv ntau lub chaw tsim khoom. Lub tshuab ntim khoom tsis siv neeg rau cov khoom sib xyaw tsis khiav zoo, lossis lub hnab ua nyuaj rau qhib.
Feem ntau, kev sib xyaw qhuav siv ob-component reactive adhesives, uas yuav tsum kho ntawm qhov kub siab tom qab sib xyaw kom ua tiav qhov siab tshaj plaws ntawm cov khoom sib xyaw. Tus neeg sawv cev slip hauv PE breathable zaj duab xis yuav hloov pauv vim qhov hloov pauv ntawm qhov kub kho. Ntawm qhov kub tshwj xeeb, tus neeg sawv cev slip yuav dhau los ua kev hloov pauv tshuaj thiab poob nws cov nyhuv slip. Qhov siab dua huab cua, qhov sib txawv tseem ceeb dua. Qhov ntau dua qhov poob, cov khoom kawg yuav dhau los ua astringent thiab tsis tuaj yeem siv.

Yog li ntawd, qhov kub ntawm chav kho yuav tsum tau tswj hwm nruj me ntsis ntawm kwv yees li 40 ℃ thiab tsis tuaj yeem nce ntxiv yam tsis xav tau. Tsis tas li ntawd, raws li kev siv sib txawv ntawm cov khoom, xaiv lwm cov khoom xyaw kom tsis txhob muaj cov khoom tsis sib xws vim yog kev xaiv cov qib resin tsis raug.

4 Lub foob cua sov tsis zoo
Tom qab cov tshuaj sib xyaw nkag mus rau hauv lub processor kawg nkag mus rau hauv tes ntawm cov neeg siv khoom, qee zaum qhov kub ntawm qhov chaw kaw cua sov siab dhau, qhov kaw cua sov tsis raug, thiab lwm yam, uas tsis tuaj yeem cawm tau hauv cov xwm txheej hnyav. Cov laj thawj rau qhov tshwm sim no suav nrog kev tawg ntawm corona, cov neeg sawv cev nplua ntau, thiab ntxiv cov khoom siv rov ua dua ntau dhau.

Kev puas tsuaj ntawm Corona
Thaum cov yeeb yaj kiab PE ua pa tau hla dhau lub tshuab tso tawm hluav taws xob siab thaum lub sijhawm tsim khoom, nws yuav ua rau cov yeeb yaj kiab tawg ib nrab vim ntau yam laj thawj. Qhov xwm txheej no feem ntau yog ib daim kab ntev, thiab qhov chaw feem ntau yog kho. Tus nqi ntawm qhov nro ntawm qhov chaw feem ntau siab heev. Vim tias qhov kub ntawm qhov tawg ua rau muaj cov khoom nrog cov pab pawg polar zoo li qhov chaw sib xyaw, cov khoom no tsis muaj qhov kub thiab txias. Yog li ntawd, nws yuav siv rau hauv kev ua lub hnab lossis kev ntim khoom tsis siv neeg. Kev kaw tsis zoo ib nrab ntawm qhov kub thiab txias tau tshwm sim. PE daim nyias nyias ua pa ntxiv cov khoom sib xyaw ua ke ntawm qhov nro ntawm qhov chaw sim thaum nkag mus rau hauv lub Hoobkas rau kev tshuaj xyuas kom tsis txhob muaj qhov xwm txheej no.

Cov ntsiab lus ntawm tus neeg sawv cev siab
Vim tias muaj cov ntsiab lus siab ntawm cov neeg sawv cev nplua nyob rau hauv txheej txheej kub ntawm PE breathable zaj duab xis, nws yuav ua rau muaj ntau ntawm nws los nag rau ntawm PE breathable zaj duab xis nto kom tsim ib txheej ntom, uas cuam tshuam kev kaw cua sov ntawm PE breathable zaj duab xis.
Qhov no yuav tshwm sim yog tias siv daim ntaub PE breathable uas tas sij hawm lawm. Yog li ntawd, nws yog ib qho tsim nyog los xaiv cov qib resin tsim nyog raws li cov neeg siv khoom xav tau tshwj xeeb thiab sim tsis txhob siv cov yeeb yaj kiab tuag rau cov khoom lag luam siab. Tom qab qhov xwm txheej no tshwm sim, nws raug pom zoo kom siv cov kuab tshuaj los so lub hau kub ntau zaus, thiab cov txiaj ntsig yuav zoo dua.

Ntxiv ntau dhau ntawm cov khoom siv rov ua dua tshiab
Yuav kom txuag tau nqi, feem ntau ntxiv qee yam khoom siv rov ua dua tshiab rau hauv PE breathable membranes 'kev tsim khoom. Cov khoom siv rov ua dua tshiab feem ntau rov ua dua tshiab ntawm qhov kub siab tsis pub tsawg dua ob zaug. Muaj qee qhov tsis huv. Tom qab daim nyias nyias rov ua dua tshiab, nws qhov kev ua haujlwm kub-sealing tau zoo dua. Txo qis, qhov kub-sealing kub feem ntau nce 5-10 ℃. Kev sim qhia tau tias thaum ntxiv cov khoom siv kub-sealing rov qab yog 30%, qhov kub-sealing kub ntawm PE breathable zaj duab xis nce 3-5 ℃. Thaum ntxiv cov khoom siv yog 50%, qhov kub-sealing kub nce 6-10 ℃ thiab feem ntau xav kom tus neeg tsim zaj duab xis tsis txhob ntxiv cov khoom siv rov ua dua tshiab rau hauv txheej kub-sealing ntau li ntau tau.

5. Daim ntawv thov ntawm PE breathable membrane
Vim nws cov khoom siv lub cev thiab lub cev mos mos thiab xis nyob, PE breathable membrane muaj cov khoom tensile thiab elongation zoo heev.

Cov chaw thov feem ntau yog:
● Tej yam siv txhua hnub: tsho los nag, daim npog khaub ncaws, daim npog qhov muag, daim ntaub npog rooj, lub kaus mom da dej, daim ntaub thaiv da dej, hnab dej, daim ntaub npog rooj, thiab lwm yam.;
● Cov khoom siv tu cev: cov ntaub so ntswg, cov ntaub so huv, cov khaub ncaws phais mob, cov khoom ntim tshwj xeeb rau kev kho mob thiab cov khoom ntim khoom noj, thiab lwm yam;
● Cov khoom siv ntim khoom: khoos phis tawj, cov khoom siv cua txias, cov ntaub thaiv plua plav, cov ntaub thaiv tsheb, cov khoom ntim khoom siv rau pleev kom zoo nkauj, cov hnab yuav khoom, cov hnab khoom plig, cov ntaub ntawv tais ceev tseg, thiab lwm yam.;
● Cov khoom ntim khoom zoo nkauj: cov hnab tshuaj pleev ib ce, cov ntawv sau zoo nkauj, cov xub pwg nyom, cov khaub ncaws, cov hnab nuv ntses, cov hnab tes, thiab cov hnab, thiab lwm yam.