Ib daim ntaub uas pw zoo li ib daim phiaj lossis daim ntaub lattice. Nws yog ua los ntawm cov khoom siv filament txuas ntxiv (xov).
Yuav kom cov xov paj nyob rau hauv qhov chaw xav tau sab xis, nws yog qhov tsim nyog los koom nrog cov no
cov xov paj ua ke. Sib piv rau cov khoom siv woven qhov kev kho ntawm cov xov paj warp thiab weft hauv
cov ntaub qhwv caj dab yuav tsum tau ua los ntawm kev sib txuas tshuaj lom neeg. cov xov paj ntaub tsuas yog muab tso rau hauv qab
Qhov no yog ua tiav los ntawm kev tsim khoom.
Cov scrim uas tau tso tsegyog tsim tawm hauv peb kauj ruam yooj yim:
KAUJ RUAM 1: Cov ntawv xov warp raug pub los ntawm cov kab seem lossis ncaj qha los ntawm lub creel.
KAUJ RUAM 2: Ib lub cuab yeej tig tshwj xeeb, lossis turbine, tso cov xov paj hla ntawm qhov ceev ceev rau ntawm
los yog ntawm cov ntawv warp. Lub scrim tam sim ntawd impregnated nrog ib tug nplaum system kom ntseeg tau tias lub fixation ntawm tshuab- thiab hla kev taw qhia yarns.
KAUJ RUAM 3: Lub scrim yog thaum kawg raug qhuav, thermally kho thiab qhov txhab rau ntawm ib lub raj
Qhov sib txawv ntawm Laid Scrims thiab Woven Scrims:
Cov lus qhia ntawm peb cov Scrims Tso:
| Dav: | 500 txog 2500 hli | Yob Ntev: | Txog li 50 000 m | Hom xov paj: | Iav, polyester, carbon | ||||||||
| Kev Tsim Kho: | Plaub fab, peb sab | Cov Qauv: | Txij li 0.8 yarns/cm mus rau 3 yarns/cm | Kev sib txuas: | PVOH, PVC, Acrylic, kho kom haum | ||||||||
Qhov zoo ntawmCov Scrims uas tau muab tso rau:
Feem ntaucov scrims uas tau tso tsegyog li ntawm 20 - 40% nyias dua li cov khoom siv woven ua los ntawm tib lub xov thiab nrog tib lub qauv.
Ntau tus qauv European xav kom cov ru tsev daim nyias nyias tsawg kawg nkaus rau ob sab ntawm daim scrim.Cov ntaub thaiv qhov raipab tsim cov khoom nyias dua yam tsis tas yuav lees txais cov nqi txo qis. Nws muaj peev xwm txuag tau ntau dua 20% ntawm cov khoom siv raw xws li PVC lossis PO.
Tsuas yog cov scrims tso cai rau kev tsim cov ntaub thaiv ru tsev peb txheej sib npaug (1.2 hli) nyias heev uas feem ntau siv hauv Central Europe. Cov ntaub tsis tuaj yeem siv rau cov ntaub thaiv ru tsev uas nyias dua 1.5 hli.
Cov qauv ntawm ibtso scrimtsis pom tseeb hauv cov khoom kawg dua li cov qauv ntawm cov ntaub woven. Qhov no ua rau cov khoom kawg du thiab sib npaug.
Lub du nto ntawm cov khoom kawg uas muaj cov scrims pw tso cai rau weld lossis nplaum cov khaubncaws sab nraud povtseg ntawm cov khoom kawg yooj yim dua thiab ruaj khov nrog txhua lwm yam.
Cov chaw du dua yuav tiv taus kev qias neeg ntev dua thiab nyob ntev dua.
Kev siv ntawmiav fiber scrimCov ntaub tsis muaj zog ua rau lub tshuab ua haujlwm ceev dua rau kev tsim cov ntawv ru tsev bitu-men. Yog li ntawd, lub sijhawm thiab kev siv zog ntau hauv lub Hoobkas ua cov ntawv ru tsev bitumen tuaj yeem tiv thaiv tau.
Cov nqi kho tshuab ntawm cov ntawv ru tsev bitumen tau txhim kho zoo los ntawm cov scrims.
Cov ntaub ntawv uas feem ntau yuav rhuav yooj yim, xws li ntawv, ntawv ci lossis zaj duab xis los ntawm ntau hom yas sib txawv, yuav raug tiv thaiv kom tsis txhob rhuav tau zoo los ntawm kev laminating cov no nrogcov scrims uas tau tso tseg.
Txawm hais tias cov khoom siv woven tuaj yeem muab rau loomstate, ib qhotso scrimyuav ib txwm raug impregnated. Vim li no peb muaj kev paub dav dav txog qhov twg binder yuav zoo tshaj plaws rau ntau daim ntawv thov. Kev xaiv ntawm cov nplaum zoo yuav txhim kho kev sib txuas ntawmtso scrimnrog rau qhov khoom kawg tseem ceeb heev.
Lub fact tias lub Upper thiab Lower warp nyob rau hauvcov scrims uas tau tso tsegyuav ib txwm nyob rau tib sab ntawm cov xov paj weft lav tias cov xov paj warp yuav ib txwm nyob hauv qab kev nruj. Yog li ntawd, lub zog tensile hauv kev taw qhia warp yuav raug nqus tam sim ntawd. Vim yog qhov cuam tshuam no,cov scrims uas tau tso tsegfeem ntau qhia tau tias muaj kev txo qis ntawm elongation.Thaum laminating ib daim scrim ntawm ob txheej ntawm zaj duab xis lossis lwm yam ntaub ntawv, yuav tsum muaj cov nplaum tsawg dua thiab qhov sib koom ua ke ntawm daim laminate yuav raug txhim kho. Kev tsim cov scrims yeej ib txwm xav tau cov txheej txheem ziab thermal. Qhov no ua rau preshrinking ntawm cov polyester thiab lwm yam thermoplastic yarns uas yuav txhim kho cov kev kho mob tom qab ua los ntawm cov neeg siv khoom.
Cov qauv tsim ntawmCov Scrims uas tau muab tso rau:
Ib qho warp
Qhov no yog qhov kev tsim kho scrim feem ntau. Thawj txoj xov warp* nyob rau hauv ib txoj xov weft** yog ua raws li txoj xov warp saum toj ntawm txoj xov weft. Tus qauv no rov ua dua thoob plaws tag nrho qhov dav. Feem ntau qhov sib nrug ntawm cov xov yog ib txwm thoob plaws tag nrho qhov dav. Ntawm qhov kev sib tshuam ob txoj xov yuav ib txwm ntsib ib leeg.
* warp = tag nrho cov xov hauv kev taw qhia ntawm lub tshuab
** weft = tag nrho cov xov hauv kev taw qhia hla
Ob chav warp
Cov xov warp sab saud thiab sab hauv qab yuav ib txwm muab tso rau ib qho rau ib qho kom cov xov weft yuav ib txwm raug kho ntawm cov xov warp sab saud thiab sab hauv qab. Ntawm qhov kev sib tshuam peb cov xov yuav ib txwm ntsib ib leeg.
Cov ntaub ntawv tsis-woven laminates
Ib daim ntaub scrim (ib daim los yog ob daim warp) yog laminated rau ntawm ib daim ntaub nonwoven (ua los ntawm iav, polyester los yog lwm yam fibers). Nws yog ua tau los tsim cov laminates nrog cov ntaub nonwovens uas hnyav los ntawm 0.44 mus rau 5.92 oz./sq.yd.
