OSB (OrientedStrandBoard) yog ib hom kev tsim cov ntoo zoo ib yam li pawg thawj coj saib, los ntawm kev ntxiv cov khaubncaws sab nraud povtseg ntawm cov ntoo (flakes) hauv ib qho kev taw qhia tshwj xeeb uas tsim cov ntawv khi thiab tom qab ntawd ntim cov ntoo.
Nws tau tsim nyob rau xyoo 1963 los ntawm Armin Elmendorf ntawm California. OSB tej zaum yuav muaj ib tug ntxhib thiab variegated nto, nrog ib tug strips kwv yees li 2.5 cm x 15 cm (1.0 x 5.9 nyob rau hauv) muab tso unevenly hla ib leeg, thiab nyob rau hauv ntau hom thiab thicknesses.

Lub hom phiaj ntawm OSB

OSB yog cov khoom siv nrog cov khoom siv zoo, ua rau nws tshwj xeeb tshaj yog haum rau kev siv cov khoom siv hauv kev tsim kho.
Nws yog tam sim no nrov tshaj li plywood, accounting rau 66% ntawm cov qauv vaj huam sib luag kev lag luam. Feem ntau siv yog ua sheathing rau phab ntsa, pem teb thiab ru tsev decks.
Rau kev siv phab ntsa sab nrauv, cov vaj huam sib luag tuaj yeem laminated nrog lub teeb ci ntsa iab ntawm ib sab; qhov no yooj yim rau kev teeb tsa thiab txhim kho lub zog ua haujlwm ntawm lub tsev lub hnab ntawv. OSB kuj tseem siv rau hauv kev tsim cov rooj tog.

Manufacturing ntawm OSB Boards

Hom nplaum nplaum siv los ntawm OSB suav nrog: urea-formaldehyde (OSB hom 1, tsis muaj qauv, tsis muaj dej tsis qab); isocyanate-raws li adhesives (los yog PMDI polymethylene diphenyl diisocyanate-raws li) nyob rau hauv cov cheeb tsam sab hauv nrog melamine-urea-formaldehyde los yog phenol-formaldehyde Resin kua nplaum rau ntawm qhov chaw (OSB hom 2, structural, nto waterproofing); phenolic resin (OSB hom 3 thiab 4, hom qauv, rau qhov chaw ntub dej thiab sab nraum zoov).

Cov khaubncaws sab nraud povtseg yog tsim los ntawm shredding ntoo rau hauv ib lub strips uas tau soj ntsuam thiab tom qab ntawd taw qhia rau ntawm txoj siv tawv lossis hlau mesh. Cov cushions yog tsim los ntawm ib txoj kab molding. Cov ntoo slats ntawm txheej txheej yog ua raws li lub zog axis ntawm lub panels, thaum lub puab txheej yog ntsug. Tus naj npawb ntawm cov khaubncaws sab nraud povtseg nyob ntawm ib feem ntawm lub thickness ntawm lub vaj huam sib luag, tab sis yog txwv los ntawm cov cuab yeej ntsia ntawm qhov chaw tsim khoom. Lub thickness ntawm tus neeg txheej kuj tuaj yeem sib txawv los muab cov vaj huam sib luag tiav sib txawv (feem ntau, 15 cm (5.9 hauv) txheej yuav tawm los ntawm 15 hli (0.59 hauv) vaj huam sib luag thickness). Lub lev yog muab tso rau hauv ib lub xovxwm kub kom compress cov nplooj ntawv thiab khi lawv los ntawm thermally activating thiab kho cov resin uas tau coated rau ntawm nplooj ntawv. Cov panels ib leeg ces txiav los ntawm lev mus rau qhov loj me. Feem ntau ntawm lub ntiaj teb OSB yog tsim los ntawm cov chaw tsim khoom loj hauv Tebchaws Meskas thiab Canada.

Yam khoom

Cov ntaub ntawv uas tsis yog ntoo tau siv los tsim cov khoom zoo ib yam li OSB. Oriented qauv straw board yog ib tug engineering board ua los ntawm splitting lub straw, ntxiv P-MDI nplaum, thiab kub nias lub straw txheej nyob rau hauv ib tug tshwj xeeb kev taw qhia. Particleboard tuaj yeem ua los ntawm bagasse.

#OSB #OSB3 #PB #particleboard