Plywood yog dab tsi?

Plywood, tseem hu ua plywood lossis plywood, yog lub rooj tsavxwm ua los ntawm peb lossis ntau txheej ntawm veneer (feem ntau yog cov ntawv ntoo lossis ntoo chips) ua tiav los ntawm cov txheej txheem xws li txheej txheej, shaping, thiab kub nias. Qhov tseem ceeb ntawm lub rooj tsavxwm no yog nws cov txheej txheem txheej, qhov twg cov lus qhia kev ntxhib los mos ntawm txhua txheej ntawm cov ntoo chips (tseem hu ua veneers) yog perpendicular lossis ntawm ib lub kaum ntse ntse rau ib leeg. Qhov kev tsim no tsis tsuas yog txhim kho lub zog ntawm lub rooj tsavxwm, tab sis kuj tseem tiv thaiv cov teeb meem xws li tawg thiab deformation los ntawm anisotropy ntawm cov ntoo. Tsis tas li ntawd, thaum lub sij hawm tsim cov txheej txheem ntawm plywood, lub thickness, tsob ntoo hom, thiab kev kho deg ntawm veneer tuaj yeem hloov kho raws li qhov xav tau kom ua tau raws li kev xav tau sib txawv thiab cov teebmeem zoo nkauj.
Los ntawm ib puag ncig kev xav, niaj hnub plywood manufacturing tau dav siv ib puag ncig tus phooj ywg adhesives, xws li E0 qib thiab E1 qib adhesives nrog tsawg formaldehyde emissions, los xyuas kom meej tias cov khoom ua tau raws li thoob ntiaj teb cov qauv ib puag ncig thiab txo cov kev hem thawj rau cov pej xeem noj qab haus huv. Nyob rau tib lub sijhawm, qee qhov high-end plywood kuj txais formaldehyde dawb addit