Common Raw Materials in Papermaking: Phau Ntawv Qhia Kom Paub

Papermaking yog lub sijhawm ua lag luam muaj txiaj ntsig uas tso siab rau ntau yam khoom siv los tsim cov khoom lag luam uas peb siv txhua hnub. Los ntawm cov ntoo mus rau cov ntawv siv dua tshiab, txhua yam khoom muaj cov yam ntxwv tshwj xeeb uas cuam tshuam rau qhov zoo thiab kev ua haujlwm ntawm daim ntawv kawg. Hauv phau ntawv qhia no, peb yuav tshawb nrhiav cov ntaub ntawv nyoos tshaj plaws hauv papermaking, lawv cov khoom fiber ntau, pulp yields, thiab kev siv.

Ntoo: Lub Cim Txhaum Cai

Ntoo yog ib qho ntawm feem ntau siv raw cov ntaub ntawv hauv papermaking, nrog ob pawg loj: softwood thiab hardwood.

Softwood

• Fiber Length: Feem ntau yog nyob ntawm 2.5 mus rau 4.5 hli.
• Pulp Yield: Ntawm 45% thiab 55%.
• Yam ntxwv: Softwood fibers ntev thiab yoog raws, ua rau lawv zoo tagnrho rau kev tsim cov ntawv muaj zog. Lawv lub peev xwm los tsim cov kev sib cuam tshuam muaj zog ua rau cov ntawv ua haujlwm zoo heev thiab lub zog tensile. Qhov no ua rau cov ntoo mos yog cov khoom siv zoo tshaj plaws rau kev tsim cov ntawv sau, ntawv luam ntawv, thiab cov khoom ntim muaj zog.

Ntoo tawv

• Fiber Length: Nyob ib ncig ntawm 1.0 mus rau 1.7 mm.
• Pulp Yield: Feem ntau 40% mus rau 50%.
• Yam ntxwv: Hardwood fibers luv dua piv rau softwood. Thaum lawv tsim cov ntawv nrog lub zog qis dua, lawv feem ntau sib xyaw nrog cov ntaub mos mos los tsim cov ntawv luam tawm nruab nrab mus rau qib qis thiab cov ntaub so ntswg.

Agricultural thiab Plant-Based Materials

Dhau ntawm cov ntoo, ntau yam khoom siv ua liaj ua teb thiab cov nroj tsuag muaj txiaj ntsig zoo hauv papermaking, muab kev ruaj khov thiab muaj txiaj ntsig zoo.

Straw thiab Wheat Stalks

• Fiber Length: Kwv yees li 1.0 txog 2.0 mm.
• Pulp Yield: 30% mus rau 40%.
• Yam ntxwv: Cov no yog cov khoom siv dav dav thiab raug nqi zoo. Txawm hais tias lawv cov pulp tawm los tsis yog siab heev, lawv tsim nyog rau kev tsim cov ntawv kab lis kev cai thiab ntim ntawv.

Xyoob

• Fiber Length: Ntau yam ntawm 1.5 mus rau 3.5 mm.
• Pulp Yield: 40% mus rau 50%.
• Yam ntxwv: Xyoob fibers muaj cov khoom nyob ze ntawm cov ntoo, nrog lub zog zoo. Dab tsi ntxiv, xyoob muaj lub voj voog loj hlob luv luv thiab muaj zog rov ua dua tshiab, ua rau nws yog ib qho tseem ceeb rau cov ntoo. Nws tuaj yeem siv los tsim ntau yam ntaub ntawv, suav nrog cov ntawv kab lis kev cai thiab cov ntawv ntim khoom.

Bagasse

• Fiber LengthLoj: 0.5-2.0mm
• Pulp Yield: 35% mus rau 55%.
• Yam ntxwv: Raws li kev ua liaj ua teb pov tseg, bagasse yog nplua nuj nyob hauv cov peev txheej. Nws qhov ntev fiber ntau txawv heev, tab sis tom qab ua tiav, nws tuaj yeem siv los tsim cov ntawv ntim thiab cov ntaub so ntswg.

Khib Nyiab Ntawv: Ib qho Kev Xaiv Txiaj Ntsig

Cov ntawv pov tseg ua lub luag haujlwm tseem ceeb hauv kev lag luam ncig ntawm kev lag luam papermaking.

• Fiber LengthLoj: 0.7mm-2.5mm Piv txwv li, fibers hauv cov ntawv pov tseg hauv chaw ua haujlwm yog luv luv, nyob ib ncig ntawm 1 hli, thaum cov ntawv ntim hauv cov ntawv pov tseg yuav ntev dua.
• Pulp Yield: Nws txawv nyob ntawm hom, qhov zoo, thiab kev siv tshuab ntawm cov ntawv pov tseg, feem ntau yog li ntawm 60% txog 85%. Cov thawv qub corrugated (OCC) tuaj yeem muaj cov paj ntoo ntawm li 75% mus rau 85% tom qab kev kho kom raug, thaum sib xyaw ua haujlwm cov ntawv pov tseg feem ntau muaj cov txiaj ntsig ntawm 60% mus rau 70%.
• Yam ntxwv: Siv cov ntawv pov tseg raws li cov khoom siv raw yog ib puag ncig tus phooj ywg thiab muaj cov paj ntoo siab. Nws yog siv dav hauv kev tsim cov ntawv rov ua dua tshiab thiab cov ntawv corrugated, pab txhawb kev txuag thiab txo cov khoom pov tseg.

Cov Lus Qhia Tseem Ceeb

Nws yog ib qho tseem ceeb kom nco ntsoov tias cov txheej txheem pulping txawv rau ntau yam khoom siv raw.Ntoo, xyoob, straw, thiab nplej stalks yuav tsum tau ua nojthaum lub sij hawm pulping. Cov txheej txheem no siv cov tshuaj los yog qhov kub thiab txias thiab siab kom tshem tawm cov khoom tsis-fibrous xws li lignin thiab hemicellulose, kom ntseeg tau tias cov fibers tau sib cais thiab npaj rau papermaking.

Hauv qhov sib piv, cov ntawv pov tseg pulping tsis tas yuav ua noj. Hloov chaw, nws muaj cov txheej txheem xws li deinking thiab tshuaj ntsuam kom tshem tawm cov impurities thiab npaj cov fibers rau rov siv dua.

Kev nkag siab txog cov khoom ntawm cov ntaub ntawv raw yog qhov tseem ceeb rau cov neeg ua ntawv xaiv cov ntaub ntawv zoo rau lawv cov khoom tshwj xeeb, ntsuas qhov zoo, tus nqi, thiab kev ruaj khov. Txawm hais tias nws yog lub zog ntawm softwood fibers los yog eco-friendliness ntawm cov ntaub ntawv pov tseg, txhua cov ntaub ntawv raw ua rau muaj kev sib txawv ntawm lub ntiaj teb ntawm cov khoom ntawv.