Lub Khoom Siv Ntau Lawm Raw Khoom Ntawm Fibreboard

Cov theem pib uas ua los ua cov kab hluav taws xob yog sib cais cov ntoo ua ke lossis cov fiber ntau ua ke. Cov ntaub ntawv raw khoom rau kev tsim ua fiber ntau yog los ntawm hav zoov txiav cov seem, xws li ceg ntoo, ceg ntoo, cov ntoo-txoj kab uas hla me me, thiab lwm yam; thiab wood ua cov seem, xws li cov npoo npoo, txiav cov ntoo, sawdust, thiab lwm yam. Tsis tas li ntawd, cov pov tseg los ntawm kev ua tshuaj ntawm cov khoom siv hauv hav zoov (xws li tannin thiab hydrolyzed residues) thiab lwm cov kab tsob ntoo tuaj yeem siv los ua cov fibers. Coniferous ntoo muaj cov ntsiab lus fiber ntau, thiab qhov ntev fiber ntau yog 30-50% ntev dua li ntawm cov ntoo uas yog broadleaf. Yog tias siv cov ntoo hardwood, nws yuav tsum tau kho ua ntej: cov tawv ntoo sib xyaw thiab cov khoom siv pulp tuaj yeem siv rau pulping, lossis cov tawv ntoo tuaj yeem kho ua tshuaj lom neeg, thiab dej kub thiab dej khov kuj tseem siv tau. Ua ntej cov fiber ntau sib cais, cov khoom siv raw raug txiav rau hauv 20-30 hli tuab, 3-5 hli tuab, thiab 15-25 hli dav hlais siv ib qho taub hau. Cov txiag ntoo yog qhov loj heev, nws tsis yooj yim kom muag muag los yog tsis ncaj, thiab cov fiber ntau qhov sib cais yog me me thaum lub sijhawm kho ua ntej thiab ua kom sov; yog tias cov ntoo ntoo luv luv, qhov feem ntawm cov xov uas txiav tau loj, thiab qhov kev ua haujlwm nruab nrab tsis zoo, ua rau muaj zog fiberboard tsawg dua. Cov hlais ntoo txiav tau xa mus rau tom qab kuaj xyuas, rov tsoo, dej ntxuav thiab lwm cov txheej txheem rau kev sib cais fiber ntau.