Lub hauv paus ntsiab lus ntawm plywood

Txhawm rau txhim kho cov khoom anisotropic ntawm ntuj ntoo kom ntau li ntau tau, thiab ua kom cov plywood cov yam ntxwv zoo ib yam thiab ruaj khov hauv cov duab, feem ntau plywood yuav tsum ua raws li ob txoj hauv kev hauv cov qauv: ib qho yog symmetry; Lwm qhov yog tias cov veneer fibers uas nyob ib sab yog perpendicular rau ib leeg. Lub hauv paus ntsiab lus ntawm symmetry yog tias cov veneers ntawm ob sab ntawm lub dav hlau nruab nrab ntawm symmetry ntawm cov plywood yuav tsum sib npaug rau ib leeg tsis hais qhov xwm ntawm cov ntoo, thickness ntawm veneer, tus naj npawb ntawm cov txheej, fiber ntau kev taw qhia, thiab cov dej noo. Nyob rau hauv tib lub plywood, veneers ntawm ib hom thiab tuab yuav siv tau, los yog veneers ntawm ntau hom thiab tuab yuav siv tau; Txawm li cas los xij, ob hom veneer thiab tuab uas sib luag rau ib leeg ntawm ob sab ntawm lub dav hlau symmetry yuav tsum zoo ib yam. Pem hauv ntej thiab nram qab vaj huam sib luag tsis pub ua tib hom ntoo.

Ua kom cov qauv ntawm plywood ua tau raws li cov ntsiab lus saum toj no ob lub hauv paus tib lub sijhawm, nws cov txheej txheem yuav tsum khib. Yog li ntawd, plywood feem ntau yog ua rau peb txheej, tsib txheej, xya txheej thiab lwm yam khib nyiab. Lub npe ntawm txhua txheej ntawm plywood yog: lub veneer nto yog hu ua phaj nto, sab hauv veneer yog hu ua core phaj; sab pem hauv ntej phaj yog hu ua lub ntsej muag phaj, lub phaj sab nraub qaum yog hu ua phaj nraub qaum; nyob rau hauv cov tub ntxhais phaj, cov kev taw qhia fiber ntau yog parallel mus rau lub phaj nto yog hu ua long core board los yog nruab nrab board. Thaum tsim cov kab noj hniav slab, lub ntsej muag phaj thiab lub phaj rov qab yuav tsum fim nruj nreem rau sab nraud.