(5) Tear degree
Tear lub zog yog ib qho kev ntsuas ntawm daim ntawv tsis kam rau tearing, qhia hauv mN.
Lub hauv paus tseem ceeb cuam tshuam rau lub zog tsim kua muag yog qhov nruab nrab ntev fiber ntau, ua raws li kev sib txuas ntawm fiber ntau, fiber ntau orientation, fiber ntau zog, thiab fiber ntau interlacing.
Qhov tseem ceeb, fiber ntau interlacing yog ze rau cov txheej txheem papermaking. Piv txwv li, cov qauv kev sib tsoo thiab kev ua haujlwm ruaj khov ntawm polyester tsim cov ntaub ncaj qha cuam tshuam rau kev faib tawm thiab kev sib cuam tshuam ntawm fibers ntawm lub vev xaib, yog li cuam tshuam rau lub zog tsim kua muag.
Thaum lub sij hawm pib pulping, nce fiber ntau cohesion ua rau txo qis ntawm fiber ntau ntev, ua rau kom muaj zog tsim kua muag.
Tom qab ntawd, qhov txo qis ntawm fiber ntau ua rau lub zog tawg sai sai. Piv txwv li, lub zog tsim kua muag ntawm sulfite ntoo pulp pib poob ntawm 18-25℃SR, thaum lub zog fold pib poob ib ncig ntawm 50℃SR. Lub sijhawm tawg feem ntau pib poob ntawm 60-80℃SR.
Tsis tas li ntawd, lub cev muaj zog ntawm fibers thiab lawv cov qauv interlacing tseem cuam tshuam rau kev tsim kua muag.
Kev taw qhia ntawm fibers nyob rau hauv daim ntawv profoundly cuam tshuam ob qho tib si longitudinal thiab transverse kua muag tsis kam. Raws li daim ntawv muaj ntau longitudinally oriented fibers dua transversely aligned sawv daws yuav, transverse kua muag kuj tsis tu ncua tshaj li longitudinal tsim kua muag kuj.
Tsis tas li ntawd, nyob rau hauv cov txheej txheem ziab, Woven Dryer Fabrics muab kev txhawb nqa zoo ib yam thiab traction rau cov ntawv ntawv, uas cuam tshuam ncaj qha rau fiber ntau sib dhos thiab cohesion, thaum kawg cuam tshuam rau qhov kawg tsim kua muag ntawm cov khoom ntawv.
(6) Tightness
Qhov ceev yog hais txog qhov compactness ntawm daim ntawv, ntsuas hauv grams ib cubic centimeter.
Cov tawv tawv ntawm daim ntawv nce tsis tu ncua nrog siab dua pulping℃thiab txhim kho fiber ntau lub zog.
Lub stiffness nkhaus qhia tsis muaj cov ntsiab lus inflection.
Cov tawv nqaij nce sai heev thaum lub sij hawm pulping thaum ntxov ua ntej yuav maj mam qeeb.
Qhov no tshwm sim vim tias los ntawm lub sijhawm pulping lig, fibers tau dhau los ua dej ntau, o, thiab fibrillated, ua rau kev txhim kho ntxiv nyuaj.
Cov tawv nqaij cuam tshuam rau cov ntaub ntawv thiab lub cev muaj zog. Kev ua kom cov ntawv nruj dua txo cov permeability thiab absorbency ntawm cov ntawv tiav, thaum nyob rau hauv qee qhov kev txwv, nws txhim kho cov ntawv tawg ntev thiab tsim kua muag tab sis txo nws lub zog tsim kua muag.
Ntau yam cuam tshuam rau cov ntawv tawv tawv, suav nrog cov ntawv pov thawj pulping, hom pulp, cov ntsiab lus hemicellulose, lub vev xaib dewatering, thiab nias / nias tshuab siab.
Ntawm cov no, kev dewatering kev ua tau zoo ntawm polyester forming fabrics txiav txim siab tus qauv nruj ntawm daim ntawv ntub dej, thaum lub sij hawm tom qab- nias kom qhuav, breathability thiab nto tsim ntawm woven tshuab ziab khaub ncaws ua lub luag haujlwm tseem ceeb hauv kev tshem tawm cov dej noo thiab cov fiber ntau sib txuas, thaum kawg cuam tshuam qhov tawv tawv kawg.
Feem ntau, siab dua pulp pulping degree, ntau dua hemicellulose cov ntsiab lus, thiab nce siab nias ua rau muaj zog dua ntawm cov ntawv tiav.
(7) opacity
Opacity yog hais txog qib ntawm lub teeb - thaiv kev muaj peev xwm hauv ntawv.
Lub hauv paus tseem ceeb cuam tshuam rau daim ntawv opacity yog fiber ntau cohesion.
Nyob rau hauv siab - cov ntaub ntawv pulp, cov fibers nruj nreem kaw thaum lub sij hawm ziab kom qhuav tsim qhov sib txawv me me, txo lub teeb tawg thiab tso cai rau lub teeb kom dhau mus. Qhov no txhim kho daim ntawv pob tshab thaum txo qhov opacity.
Txhawm rau tsim cov ntawv tsis pom tseeb, cov ntawv sau nrog cov ntsiab lus qis hemicellulose raug pom zoo, vim tias hemicellulose- nplua nuj pulp nyiam hydrate yooj yim.
Tsis tas li ntawd, siab -refractive-index fillers yuav tsum raug xaiv. Thaum ziab, ua kom cov ntawv nruj thiab txo qhov nias thiab calendering siab tsim nyog txhim kho lub teeb tawg muaj peev xwm thaum txo qis kev sib kis.
Hauv seem ziab, siv Woven Dryer Fabrics nrog cov yam ntxwv ntawm qhov chaw tsim nyog yuav pab tswj cov ntawv lub microscopic roughness, yog li txhim kho lub teeb tawg thiab ua kom muaj qhov pom tseeb.
