xov xwm

Lus Cim: Daim ntawv yog cov khoom siv feem ntau siv rau ntim luam ntawv.Nws cov khoom siv lub cev muaj qhov cuam tshuam ncaj qha lossis tsis ncaj qha rau kev luam ntawv zoo.Kev nkag siab zoo thiab kev paub zoo ntawm cov ntawv, raws li cov yam ntxwv ntawm cov khoom, kev siv cov ntawv tsim nyog los txhim kho cov khoom luam ntawv zoo, yuav ua lub luag haujlwm zoo hauv kev txhawb nqa.Daim ntawv no los qhia cov yam ntxwv ntawm daim ntawv ntsig txog cov ntsiab lus, rau cov phooj ywg siv:

Ntawv luam ntawv

Ib qho ntawm ntau hom ntawv luam tawm uas muaj cov khoom tshwj xeeb, nyob ntawm txoj kev luam ntawv.

Daim ntawv tshwj xeeb yog siv rau kev luam ntawv.Raws li kev siv tuaj yeem muab faib ua: ntawv xov xwm, phau ntawv thiab ntawv xov xwm, ntawv npog, ntawv pov thawj thiab lwm yam.Raws li cov txheej txheem luam ntawv sib txawv tuaj yeem muab faib ua cov ntawv luam ntawv luam ntawv, gravure printing ntawv, offset printing ntawv thiab lwm yam.

1 Quantitative

Nws hais txog qhov hnyav ntawm daim ntawv hauv ib cheeb tsam, qhia los ntawm g / ㎡, uas yog, gram hnyav ntawm 1 square meter ntawv.Qib ntau ntawm daim ntawv txiav txim siab lub cev ntawm daim ntawv, xws li lub zog tensile, tearing degree, nruj, nruj thiab thickness.Qhov no kuj yog qhov laj thawj tseem ceeb vim li cas lub tshuab luam ntawv siab ceev tsis zoo rau cov ntawv kom muaj nuj nqis qis dua 35g / ㎡, kom nws yooj yim pom cov ntawv txawv txav, overprint tsis pub thiab lwm yam.Yog li ntawd, raws li cov yam ntxwv ntawm cov cuab yeej, qhov ntau npaum li cas ntawm cov luam ntawv qhov chaw sib raug rau nws cov kev ua tau zoo, thiaj li yuav zoo dua txo kev noj, txhim kho cov khoom zoo thiab cov luam ntawv efficiency ntawm cov khoom.

2 Thickness

Yog qhov tuab ntawm daim ntawv, chav ntsuas ntawm qhov ntsuas feem ntau yog qhia hauv μm lossis mm.Thickness thiab quantitative thiab compactness muaj kev sib raug zoo, feem ntau, daim ntawv thickness yog loj, nws quantitative sib xws siab, tab sis kev sib raug zoo ntawm ob yog tsis kiag li.Qee daim ntawv, txawm tias nyias, sib npaug lossis tshaj qhov tuab.Qhov no qhia tau hais tias qhov nruj ntawm daim ntawv fiber ntau txiav txim qhov ntau thiab tuab ntawm daim ntawv.Los ntawm qhov pom ntawm kev luam ntawv thiab ntim khoom zoo, cov ntawv tuab tuab yog qhov tseem ceeb heev.Txwv tsis pub, nws yuav cuam tshuam rau daim ntawv rov ua dua tshiab tsis siv neeg, luam ntawv siab thiab number case zoo.Yog tias koj siv cov ntawv sib txawv ntawm cov ntawv luam tawm, yuav ua rau cov ntawv tiav ua tiav cov thickness sib txawv.

3 Tightness

Nws hais txog qhov hnyav ntawm daim ntawv ib lub cubic centimeter, qhia hauv g / C㎡.Qhov nruj ntawm daim ntawv yog xam los ntawm qhov ntau thiab tuab raws li cov qauv hauv qab no: D = G / D × 1000, qhov twg: G sawv cev rau cov ntawv ntau;D yog qhov tuab ntawm daim ntawv.Tightness yog ib qho kev ntsuas ntawm qhov ntom ntawm daim ntawv qauv, yog tias nruj heev, daim ntawv nkig tawg, opacity thiab number case absorption yuav txo qis, imprinting tsis yooj yim rau qhuav, thiab yooj yim los ua cov nplaum nplaum hauv qab phenomenon.Yog li ntawd, thaum luam ntawv nrog nruj nruj, yuav tsum tau them nyiaj mloog mus rau qhov tsim nyog tswj ntawm tus number case txheej, thiab xaiv cov dryness thiab coj tus number case.

4 Hardness

Yog qhov kev ua tau zoo ntawm daim ntawv tsis kam mus rau lwm yam khoom compression, tab sis kuj yog cov ntaub ntawv fiber ntau ntxhib kev ua haujlwm.Daim ntawv hardness tsawg, tuaj yeem tau txais cov cim meej dua.Cov txheej txheem ntawm cov ntawv luam ntawv feem ntau tsim nyog rau kev luam ntawv nrog cov ntawv tsis tshua muaj zog, kom cov luam ntawv number case zoo zoo, thiab cov ntawv luam ntawv phaj kuj siab.

5 Smoothness

Hais txog qib ntawm daim ntawv nto pob, chav nyob hauv vib nas this, ntsuas tau.Lub hauv paus ntsiab lus tshawb pom yog: nyob rau hauv ib qho chaw nqus thiab siab, qee qhov ntim ntawm huab cua los ntawm iav nto thiab cov qauv ntawm qhov sib txawv ntawm lub sijhawm coj mus.Lub smoother daim ntawv yog, qhov qeeb qeeb ntawm huab cua txav los ntawm nws, thiab vice versa.Kev luam ntawv yuav tsum muaj daim ntawv nrog cov smoothness me ntsis, siab smoothness, me me dot yuav ncaj ncees rov tsim dua, tab sis tag nrho cov luam ntawv yuav tsum tau them sai sai rau tiv thaiv lub nraub qaum.Yog tias daim ntawv smoothness tsawg, qhov yuav tsum tau luam ntawv siab yog loj, number case noj kuj loj.

6 Plua plav Degree

Hais txog cov impurities ntawm qhov chaw ntawm daim ntawv, xim thiab ntawv xim muaj qhov sib txawv pom tseeb.Plua plav degree yog ib qho kev ntsuas ntawm impurities ntawm daim ntawv, qhia los ntawm tus naj npawb ntawm cov plua plav cheeb tsam nyob rau hauv ib tug tej thaj chaw deb ntawm ib square meter ntawm daim ntawv.Daim ntawv plua plav yog siab, luam ntawv number case, dot reproduction nyhuv tsis zoo, qhov chaw qias neeg cuam tshuam rau kev zoo nkauj ntawm cov khoom.

7 Sizing Degree

Feem ntau cov ntawv saum npoo ntawm cov ntawv sau, cov ntawv txheej thiab cov ntawv ntim yog tsim los ntawm sizing txheej tiv thaiv nrog dej tsis kam.Yuav ua li cas thov sizing, feem ntau siv duck cwj mem dipped nyob rau hauv tus txheej txheem tshwj xeeb number case nyob rau hauv ob peb vib nas this, kos ib kab rau ntawm daim ntawv, saib qhov siab tshaj plaws ntawm nws tsis-proliferation, impermeability, chav tsev yog mm.Daim ntawv nto sizing yog siab, luam ntawv number case txheej brightness yog siab, tsawg tus number case noj.

8 Absorbency

Nws yog lub peev xwm ntawm daim ntawv kom nqus tau tus cwj mem.Smoothness, sizing zoo ntawv, ink absorption tsis muaj zog, number case txheej qhuav qeeb, thiab yooj yim rau lo qias neeg luam ntawv.Ntawm qhov tsis sib xws, number case absorption muaj zog, luam ntawv yooj yim kom qhuav.

9 Sab hauv

Nws hais txog daim ntawv fiber ntau lub koom haum kev taw qhia.Nyob rau hauv tus txheej txheem ntawm kev ua ntawv, cov fiber ntau khiav raws longitudinal kev taw qhia ntawm lub tshuab ntawv.Nws tuaj yeem lees paub los ntawm lub kaum ntse ntse ntawm cov qhab nia.Vertical mus rau ntsug yog transverse.Tus nqi deformation ntawm longitudinal ntawv grain printing yog me me.Nyob rau hauv tus txheej txheem ntawm transverse ntawv grain printing, qhov txawv ntawm expansion yog loj, thiab lub tensile lub zog thiab kua muag degree yog tsis zoo.

10 Expansion Rate

Nws yog hais txog cov ntawv nyob rau hauv cov dej noo nqus los yog noo noo poob tom qab qhov loj ntawm qhov hloov pauv.Qhov softer cov ntaub so ntswg ntawm daim ntawv, qhov qis dua qhov nruj, qhov siab dua qhov nthuav dav ntawm daim ntawv;Hloov pauv, qhov qis dua qhov ntsuas qhov ntsuas.Tsis tas li ntawd, smoothness, sizing zoo ntawv, nws expansion tus nqi yog me me.Xws li ob-sided coated ntawv, iav card thiab A offset ntawv, thiab lwm yam.

11 Porosity

Feem ntau, daim ntawv nyias nyias thiab tsis nruj, qhov ntau breathable nws yuav.Chav tsev ntawm kev ua pa muaj peev xwm yog ml / min (milliliter ib feeb) lossis s / 100ml (thib ob / 100ml), uas yog hais txog cov huab cua uas dhau los ntawm daim ntawv hauv 1 feeb lossis lub sijhawm yuav tsum tau dhau los ntawm 100ml ntawm huab cua.Daim ntawv nrog cov pa loj permeability yog qhov ua rau ob daim ntawv nqus hauv cov txheej txheem luam ntawv.

12 Dawb Degree

Nws hais txog qhov ci ntawm daim ntawv, yog tias tag nrho cov teeb pom kev los ntawm daim ntawv, qhov muag liab qab tuaj yeem pom qhov ntawd yog xim dawb.Kev txiav txim siab ntawm cov ntawv dawb, feem ntau cov xim dawb ntawm magnesium oxide yog 100% raws li tus qauv, coj cov qauv ntawv los ntawm xiav lub teeb irradiation, whiteness ntawm me me reflectivity yog phem.Photoelectric whiteness meter kuj tseem siv tau los ntsuas qhov dawb.Cov units ntawm whiteness yog 11 feem pua.High whiteness ntawv, luam ntawv number case tshwm tsaus, thiab yooj yim los tsim los ntawm qhov tshwm sim.

13 Pem hauv ntej thiab nram qab

Nyob rau hauv daim ntawv ua, pulp yog zoo li tus pom thiab lub cev qhuav dej los ntawm adhering rau ib tug hlau mesh.Nyob rau hauv txoj kev no, raws li ib sab ntawm lub net vim poob ntawm cov fibers zoo thiab fillers nrog dej, yog li tawm hauv net marks, daim ntawv nto yog thicker.Thiab lwm sab tsis muaj net yog finer.Smooth, kom cov ntawv sib txawv ntawm ob sab, txawm tias cov khoom ziab, lub teeb siab, tseem muaj qhov sib txawv ntawm ob sab.Lub gloss ntawm daim ntawv yog txawv, uas ncaj qha cuam tshuam rau kev nqus ntawm number case thiab zoo ntawm cov khoom luam ntawv.Yog tias cov txheej txheem letterpress siv cov ntawv luam tawm nrog tuab sab nraub qaum, lub phaj hnav yuav nce ntxiv.Lub hauv ntej ntawm daim ntawv luam ntawv siab yog lub teeb, tus number case noj tsawg dua.