Phaj yog ib qho teeb meem uas yuav tsum tau kov yeej hauv cov txheej txheem ntawm cov khoom siv hauv tsev. Niaj hnub no, thaum lub phaj ua thiab phaj noj tshuab tau hloov pauv los ntawm ib ntus, ntau yam ntawm daim hlau yog nce zuj zus nyob rau ib hnub, uas yog qhov kev xaiv ntau dua rau cov neeg siv khoom, tab sis cov phaj zoo nkauj thiab ib puag ncig tiv thaiv daim hlau nrog ntau yam ntawm cov phiaj xwm yog. kuj tsis meej pem heev.
1. Blockboard, tseem hu ua core board. Blockboard yog ib lub rooj tsavxwm uas tsim los ntawm cov core board thiab lub rooj tsavxwm. Lub core board ntawm blockboard yog ua los ntawm cov ntoo slats, thiab nws yog ib qho kev xaiv tib hom ntoo lossis hom ntoo zoo sib xws. Cov ntsiab lus noo noo ntawm cov core board ntawm blockboard yog tswj los ntawm 6 ~ 12%, thiab qhov dav ntawm cov tub ntxhais yog tsis ntau tshaj peb npaug ntawm thickness, thiab cov kab nrib pleb loj thiab voids tsis pub. Muaj ob daim hlau nplaum ntawm blockboard, qhov zoo dua yog hu ua vaj huam sib luag, thiab sab nraud yog lub rooj tsavxwm rov qab. Lub rooj tuaj yeem sanded ntawm ib sab, ntawm ob sab, lossis tsis nyob ntawm ob sab. Hauv qhov tshwj xeeb, lub rooj ntawm lub phaj zoo tso cai rau kev kho kom zoo. Cov txheej txheem blockboard ua rau tag nrho siv cov khoom seem hauv kev ua ntoo, thiab yog ib hom kev tsim vaj tsev nrog loj loj, nruab nrab thickness thiab nruab nrab qauv.
2. Multi-txheej boards. Cov txheej txheem ntau txheej yog qee zaum hu ua plywood, nws thiab blockboard zoo ib yam ntawm cov txheej txheem tsim khoom, xaiv cov khoom siv, thiab lwm yam., cov txheej txheem ntau thiab cov blockboard yog tsim los ntawm ob peb txheej ntawm cov laug cam, tab sis txawv ntawm blockboard nyob rau hauv uas multilayer board tsis tas peb. txheej, thiab thickness ntawm txhua txheej ntawm multilayer board yog txawv. Cov txheej txheem ntau txheej muaj cov yam ntxwv ntawm lub zog zoo, ruaj khov zoo, hnav tsis kam, compression tsis kam, ntsaum thiab kab tiv thaiv, thiab lwm yam, thiab feem ntau yog siv hauv rooj tog kho kom zoo nkauj, kho kom zoo nkauj hauv tsev thiab lwm yam.
