Cov ntawv pulp pawg los ntawm cov khoom siv raw

Hauv kev lag luam ntawv, kev xaiv cov khoom siv raw yog qhov tseem ceeb heev rau qhov zoo ntawm cov khoom, cov nqi tsim khoom thiab kev cuam tshuam rau ib puag ncig. Kev lag luam ntawv muaj ntau yam khoom siv raw, feem ntau suav nrog cov ntoo pulp, xyoob pulp, nyom pulp, hemp pulp, paj rwb pulp thiab pov tseg ntawv pulp.

1. Cov ntoo pulp

Cov ntoo pulp yog ib qho ntawm cov khoom siv raw tshaj plaws rau kev ua ntawv, thiab yog ua los ntawm ntoo (ntau hom tsiaj xws li eucalyptus) los ntawm kev siv tshuaj lom neeg lossis tshuab. Cov ntoo pulp raws li nws cov txheej txheem pulping sib txawv, tuaj yeem muab faib ua cov tshuaj lom neeg pulp (xws li sulfate pulp, sulphite pulp) thiab cov khoom siv tshuab (xws li sib tsoo pob zeb sib tsoo ntoo pulp, sib tsoo kub tshuab pulp). Cov ntoo pulp ntawv muaj qhov zoo ntawm lub zog siab, zoo toughness, muaj zog nqus number case, thiab lwm yam. Nws yog siv dav hauv kev tsim cov phau ntawv, ntawv xov xwm, ntawv ntim khoom thiab ntawv tshwj xeeb.

2. Xyoob pulp

Xyoob pulp yog ua los ntawm xyoob ua cov khoom siv raw rau ntawv pulp. Xyoob muaj lub voj voog luv luv, muaj peev xwm rov ua dua tshiab tau zoo, yog cov khoom siv raw uas tsis ua rau ib puag ncig puas tsuaj rau kev ua ntawv. Daim ntawv xyoob pulp muaj qhov dawb siab, huab cua zoo permeability, zoo hardness thiab lwm yam ntxwv, tsim nyog rau kev tsim cov ntawv kab lis kev cai, ntawv muaj sia thiab ib feem ntawm cov ntawv ntim khoom. Nrog kev txhim kho ntawm kev paub txog ib puag ncig, kev thov ua lag luam rau ntawv xyoob pulp tab tom loj hlob.

3. Cov nyom pulp Cov nyom pulp yog ua los ntawm ntau yam nroj tsuag herbaceous (xws li reeds, wheatgrass, bagasse, thiab lwm yam) ua cov khoom siv raw. Cov nroj tsuag no muaj ntau yam khoom siv thiab pheej yig, tab sis cov txheej txheem pulping yog qhov nyuaj heev thiab yuav tsum kov yeej cov teeb meem ntawm cov xov luv luv thiab cov khoom tsis huv siab. Cov ntawv nyom pulp feem ntau yog siv rau kev tsim cov ntawv ntim khoom qis, ntawv so quav thiab lwm yam.

4. paj noob hlis

Cov noob hemp yog ua los ntawm flax, jute thiab lwm yam nroj tsuag hemp ua cov khoom siv raw rau cov noob. Cov nroj tsuag hemp fibers ntev, muaj zog, ua los ntawm cov ntawv hemp nrog kev tiv thaiv zoo thiab ruaj khov, tshwj xeeb tshaj yog tsim rau kev tsim cov ntawv ntim khoom zoo, ntawv banknote thiab qee cov ntawv lag luam tshwj xeeb.

5. Paj rwb pulp

Cov paj rwb yog ua los ntawm paj rwb ua cov khoom siv raw ntawm cov paj rwb. Cov xov paj rwb ntev, mos thiab nqus tau kua mem, ua rau cov ntawv paj rwb muaj cov qauv zoo thiab kev sau ntawv zoo, yog li nws feem ntau siv los ua cov ntawv sau ntawv zoo thiab cov ntawv pleev xim, ntawv kos duab thiab qee cov ntawv tshwj xeeb.

6. Cov Khoom Pov Tseg

Cov ntawv pov tseg, raws li lub npe qhia, yog ua los ntawm cov ntawv pov tseg rov ua dua tshiab, tom qab tshem cov number case, ntxuav thiab lwm yam txheej txheem kho. Kev siv cov ntawv pov tseg rov ua dua tshiab tsis yog tsuas yog txuag cov khoom siv ntuj tsim xwb, tab sis kuj txo cov pa phem, uas yog ib txoj hauv kev tseem ceeb los ua kom muaj kev txhim kho ruaj khov ntawm kev lag luam ntawv. Cov ntawv pov tseg tuaj yeem siv los tsim ntau hom ntawv, suav nrog corrugated boxboard, grey board, grey bottom white board, white bottom white board, newsprint, environmental cultural paper, recycled industrial paper, thiab household paper.