1.Dab tsi yog cov ntaub ntawv tseem ceeb siv nyob rau hauv txias -rolled stretch film? Yuav ua li cas xaiv ib tug ntawm lawv?
LLDPE stretch zaj duab xis: Nrog lub zog tensile zoo, muaj zog puncture tsis kam, thiab tus nqi nruab nrab, nws yog qhov kev xaiv tseem ceeb rau txias - dov coil ntim.
PVC zaj duab xis: Txawm hais tias nws muaj cov pob tshab zoo thiab nws tus kheej - adhesion, nws yog ib puag ncig tsis zoo, nws ua rau brittleness ntawm qhov kub thiab txias, thiab tej zaum yuav tso cov yas yas; yog li ntawd, nws tsis pom zoo rau xeb - pov thawj ntim ntawm txias - dov coils.
Cov kev cai tshwj xeeb: Rau lub sijhawm ntev - khaws cia lossis kev thauj mus los hauv hiav txwv, cov yeeb yaj kiab stretch nrog ntxiv UV stabilizers yuav tsum raug xaiv los tiv thaiv kev laus thiab tawg.
2.Yuav ua li cas lub thickness thiab dav ntawm lub stretch zaj duab xis yuav tsum matched nrog specifications ntawm steel kauj?
Thickness: Feem ntau siv yog 20μm mus rau 50μm. Rau cov yob me me (hauv qab 5 tons ib yob) lossis luv luv - lub sijhawm cia hauv tsev, 20μm txog 30μm yog qhov tsim nyog; rau cov yob loj (tshaj 10 tons) lossis thaum yuav tsum muaj ntau txheej txheej winding, lub thickness ntawm 35μm mus rau 50μm yog pom zoo kom ua kom tsim kua muag thiab adhesion.
Dav: Feem ntau, 500mm lossis 750mm raug xaiv kom haum raws li qhov sib txawv yob dav. Kev nqaim dhau ntawm qhov dav ua rau kev sib tshooj ntau dhau thiab ua haujlwm qis; Qhov dav dav dav ua rau nws nyuaj rau zawm thiab yooj yim ua rau wrinkles.
Number of Winding Layers: Hla -winding feem ntau yog siv, nrog tsawg kawg 2-3 txheej ib yob. Ntxiv winding yuav tsum tau nyob rau ntawm qhov kawg kom muaj ib tug nruj seal.
3.Yuav ua li cas koj txiav txim siab xeb- pov thawj muaj peev xwm ntawm stretch zaj duab xis? Nws puas yuav tsum tau siv nrog rau lwm yam ntaub ntawv?
Composite los tiv thaiv- xeb stretch zaj duab xis yog pom zoo. Hom no suav nrog cov vapor theem corrosion inhibitor rau hauv LLDPE substrate, muab ob qho tib si kev tiv thaiv lub cev thiab tso tawm cov tshuaj tiv thaiv - xeb los tsim cov txheej txheem vapor tiv thaiv ntawm cov hlau coil lub ntsej muag kawg thiab lub nplhaib sab hauv.
Yog tias siv cov yeeb yaj kiab zoo tib yam, VCI los tiv thaiv- daim ntawv xeb lossis zaj duab xis yuav tsum tau qhwv ua ntej, ua raws li cov yeeb yaj kiab ncab ua ib txheej txheej tiv thaiv kom tsis txhob ya raws thiab plua plav nkag thiab ruaj ntseg cov khoom siv los tiv thaiv - xeb.
Lub ntsiab lus tseem ceeb: Lub foob ntawm cov yeeb yaj kiab stretch thiab cov khoom siv los tiv thaiv - xeb yog qhov tseem ceeb. Thaum lub sij hawm qhwv, xyuas kom meej qhov sib tshooj yog kaw kom tsis txhob muaj cua nkag.
4.Yuav ua li cas ntsuas qhov puncture kuj thiab tensile zog ntawm stretch zaj duab xis?
elongation ntawm so: Ntev ntev ntawm kev so yuav tsum siab dua lossis sib npaug li 300%, thiab kev sib hloov elongation yuav tsum siab dua lossis sib npaug li 500% kom ntseeg tau tias muaj kev tiv thaiv kev tawg thaum lub caij winding.
Puncture resistance: Tested raws li GB / T 1040.3, nws yuav tsum muaj ntau tshaj los yog sib npaug zos rau 2.5N (raws li ib tug 25μm thickness), nrog rau tus nqi nce raws li thicker txheej.
Self-adhesion (cling): Lub tev quab yuam ntawm tus kheej - nplaum txheej thiab lub nraub qaum yuav tsum yog nruab nrab, ua kom muaj kev sib khi nruj tom qab winding yam tsis muaj qhov adhesion ntau dhau uas yuav cuam tshuam tsis tau.
5.Dab tsi yuav tsum tau ceev faj txog kev nyab xeeb thaum khaws cia thiab siv cov yeeb yaj kiab stretch?
Cia Tej yam kev mob: stretch zaj duab xis yuav tsum tau muab cia rau hauv ib tug txias, qhuav nyob rau hauv tsev ib puag ncig, tsis txhob raug tshav ntuj ncaj qha thiab kub siab (siab tshaj 40℃yuav yooj yim adhesion tsis ua hauj lwm). Lub neej txee feem ntau yog 6-12 lub hlis.
Ua ntej- siv Kev Tshuaj Xyuas: Paub meej tias cov yeeb yaj kiab yob tsis muaj dej noo, adhesion, thiab embrittlement, thiab lub ntsej muag kawg tsis deformed.
Kev Ua Haujlwm Wrapping: Thaum siv lub tshuab wrapping tshwj xeeb lossis phau ntawv tuav, tuav nruj nruj. Overstretching yog nruj me ntsis txwv tsis pub, raws li nws tuaj yeem ua rau hauv cheeb tsam tawg. Qhwv ib qho ntxiv 2-3 tig ib ncig ntawm qhov kawg thiab nias kom ruaj khov kom tsis txhob xoob ntawm zaj duab xis nto thaum lub sij hawm thauj los yog hoisting.
Kev tiv thaiv ib puag ncig thiab kev nyab xeeb: Stretch film yog flammable. Lub tsev khaws khoom yuav tsum khaws cia kom deb ntawm qhov chaw tshav kub thiab kev siv hluav taws xob vuam, thiab hluav taws kub - yuav tsum muab cov khoom siv sib ntaus sib tua.