Plywood boasts cov ntsia hlau zoo heev- tuav lub zog, siab zog, thiab yog tus yam ntxwv ntawm nws qhov ruaj khov, lub suab nqus, thiab rwb thaiv tsev kub. Nws kuj muaj cov ntsiab lus tsis tshua muaj dej (nruab nrab ntawm 10% thiab 13%), yooj yim rau txheej txheem, thiab muaj ntau yam kev siv.
Plywood yog qhov ruaj khov dua li cov ntoo, tab sis nws muaj kev cuam tshuam rau kev puas tsuaj rau cov dej noo. Yog li ntawd, nws yuav tsum tsis txhob siv nyob rau hauv chav ua noj thiab chav dej thaum lub sij hawm tsim kho.
Plywood ua txoj kev muaj xws li tshuab splicing thiab tes splicing. Tes splicing yuav manually ntxig ntoo strips rau hauv plywood. Cov ntoo strips muaj kev quab yuam tsawg dua, ua rau tsis sib xws, qhov khoob loj, thiab cov ntsia hlau tsis zoo - tuav lub zog. Nws tsis tuaj yeem saws tau thiab tsuas yog tsim nyog rau qee qhov sub- tej yaam num hauv kev kho kom zoo nkauj, xws li underlayment rau cov khoom ntoo flooring. Lub tshuab splicing, ntawm qhov tod tes, muaj kev sib zog ua kom muaj zog ntau dua, ua rau muaj qhov sib txawv me me, du splicing, txawm tias thauj khoom-cov kabmob muaj peev xwm, thiab cov qauv compact uas tsis tshua muaj kev deformation ntev - siv sijhawm.
Vim qhov sib txawv ntawm cov khoom siv, qhov zoo sib txawv. Plywood tau muab faib ua "qib superior," "qib thawj," thiab "qib tsim nyog" raws li qhov zoo ntawm cov khoom thiab kev ntxhib los mos ntawm qhov chaw veneer. Qee lub tuam txhab sau npe lawv cov laug cam raws li Qib A, Ob Chav A, lossis Triple A, tab sis qhov no tsuas yog kev ua lag luam thiab tsis ua raws li cov qauv hauv tebchaws; xws li labeling yog tsis tso cai nyob rau hauv lub lag luam.
Muaj ntau hom ntoo siv rau plywood, xws li poplar, birch, ntoo thuv, thiab paulownia. Ntawm lawv, poplar thiab birch yog suav hais tias yog qhov zoo tshaj plaws, vim tias lawv yog tuab, tsis yog mos thiab tawv heev, muaj cov ntsia hlau muaj zog - tuav lub zog, thiab tsis yooj yim deformed. Paulownia, ntawm qhov tod tes, yog lub teeb thiab mos, nqus dej ntau, muaj cov ntsia hlau tsis zoo - tuav lub zog, thiab nyuaj rau qhuav. Cov laug cam ua los ntawm paulownia yog qhov ua rau tawg thiab tawg thaum cov dej evaporates thaum siv. Pine, ua nyuaj, nyuaj rau nias, muaj cov qauv tsis zoo splicing, ntsia hlau tsis zoo- tuav lub zog, thiab lub siab deformation coefficient.