Cement Paper Hnab

Cov hnab ntawv cement-feem ntau hu ua cov hnab ntim cov cement los yog ntau- cov hnab ntawv cement sacks- tshwj xeeb, ntau- cov ntawv ntim cov txheej txheem tsim los rau kev khaws cia, thauj, thiab faib me me rau nruab nrab ntawm cov cement. Tsis zoo li cov kev daws teeb meem loj (piv txwv li, cov hnab ntim khoom loj) lossis cov thawv ntim khoom nruj, lawv tau tsim kho rau kev sib koom ua ke, cov neeg siv khoom- tus phooj ywg tuav, ua rau lawv zoo tagnrho rau kev tsim kho me me, kev muag khoom muag, thiab daim ntawv thov qhov tseeb, me me -batch cement dosing.

Cement's abrasive, hygroscopic xwm xav tau ib daim ntawv zoo. Cov hnab ntawv cement tsis yog ib daim ntawv - txheej; lawv siv ntau-phab ntsa kev tsim kho (3-5 txheej) nrog cov ntaub ntawv tshwj xeeb kom sib npaug ntawm lub zog, noo noo, thiab tus nqi. Hauv qab no yog kev sib faib ntawm lawv cov khoom tseem ceeb:

• Lub hauv paus ntawm lub hnab yog kraft ntawv, muaj zog, unbleached ntawv ua los ntawm cov ntoo pulp (feem ntau softwood, zoo li ntoo thuv) los ntawm cov txheej txheem kraft (siab-kub, tshuaj pulping). Feem ntau cov hnab ntawv cement siv 3-4 txheej ntawm kraft ntawv (hu ua "3-ply" lossis "4-ply" hnab). Tus naj npawb ntawm cov khaubncaws sab nraud povtseg nyob ntawm lub hnab ntim qhov hnyav.
• Cov dej noo yog cov yeeb ncuab loj tshaj plaws, yog li cov hnab ntawv muaj cov kev thaiv ntxiv los tiv thaiv cov dej nkag. Ob txoj kev daws teeb meem ntau tshaj plaws yog: Ib daim nyias nyias, hloov tau PE zaj duab xis liner (0.02–0.05 mm tuab) yog muab tso rau hauv ntau- hnab ntawv; Rau cov ntawv thov hauv huab cua ntub lossis chaw cia sab nraum zoov, lub hnab yuav muaj cov dej sab nrauv- cov tshuaj tiv thaiv (xws li, paraffin wax, acrylic, lossis polyethylene).
• Qee qhov hnyav 50 kg lossis kev lag luam- cov hnab ntawv qib suav nrog cov khoom siv ntxiv los tiv thaiv kev ua tsis tiav, xws li: PP (Polypropylene) strips, kraft daim kab xev, thiab lwm yam.