Yuav Ua Li Cas Ua Tsis-kua nplaum Thiab Glue Plywood piv

01 Tus nqi txo qis, vim tias tsis tas yuav ntxiv cov nplaum rau cov ntoo uas tsis muaj kev sib koom ua ke, yog li cov txheej txheem tsim tau yooj yim thiab qhov tshwm sim ntawm thaj ua rau thaj thiab kwv yees thickness txheej tsis tshwm sim. Cov khoom lag luam tsis muaj txheej txheem kev kwv yees, yog li nws tuaj yeem tsim los ntawm cov txheej txheem kua nplaum tsis pub dhau ntawm cov xovxwm multilayer. Feem ntau nruam presses nyob rau hauv glulam substrate ntau lawm yog imported. Yog li ntawd, cov txheej txheem roj hmab-dawb ntoo-raws li vaj huam sib luag tsis tsuas yog txo cov khoom siv raw, tab sis kuj txo cov khoom siv peev thiab cov nqi.

02 Kev txuag hluav taws xob, vim qhov xav tau ntawm cov txheej txheem tsis-gluing, cov ntaub ntawv raw yog oxidized ua ntej kub sib tsoo. Yog li ntawd, nyob rau hauv tib lub zog noj tej yam kev mob, cov txheej txheem uas tsis yog-kua nplaum yuav txo tau lub zog noj los ntawm 1/3 thiab txuag lub zog.

03 Cov khoom siv tshiab plywood cov khoom siv thev naus laus zis, cov txheej txheem tsis muaj gel hloov cov tshuaj muaj pes tsawg leeg ntawm cov khoom siv raw hauv cov txheej txheem ua, thiab tau dhau los ua cov tshuaj hydrolysis, degradation thiab repolymerization. Nyob rau hauv cov txheej txheem ntawm cov khoom siv tsis yog roj hmab ntoo, daim ntawv ntawm cov khoom siv tsuas yog hloov, yog li cov txheej txheem tsis yog roj hmab ntoo yog ib hom tshiab ntawm cov khoom siv polymerization txheej txheem.

Cov yam ntxwv thiab kev siv ntawm rubberless ntoo-raws li panels

Raws li peb txhua tus paub, feem ntau ntawm formaldehyde hauv tsev ib puag ncig yog los ntawm cov xim thiab cov kua nplaum ntawm cov rooj tog ntoo. Adhesives xws li urea-formaldehyde thiab phenolic kua nplaum nyob rau hauv kua nplaum ntoo panels (raws li opposed to non-glue wood-based panels) yog lub ntsiab yog vim li cas rau formaldehyde ntau lawm. Resin adhesives derived los ntawm cov khoom siv roj av tsis siv rau hauv cov txheej txheem ntawm cov ntoo uas tsis yog-glued substrate, thiab ntxiv cov catalysts, activators thiab tej yam ntuj tso khoom yog non-toxic. Yog li ntawd, cov khoom yog non-toxic, non-polluting rau ib puag ncig, thiab tsis muaj teeb meem rau lub waterproof plywood tib neeg lub cev. Nws tuaj yeem siv los ua cov rooj tog zaum hauv chav pw thiab txawm tias cov tais diav khaws cia lossis kov zaub mov.