Malinga ndi ziwerengero zomwe zilipo, mphamvu yopangira bolodi yotchinga madzi ku China ili pafupi ndi matani 2,000 pamwezi mchaka cha 2023, chomwe ndi chiwonjezeko chachikulu poyerekeza ndi matani 800 pamwezi chaka chatha.Komabe, kuchuluka kotereku kumangotengera gawo laling'ono kwambiri pamakampani opanga mapepala aku China.Bolodi yotchinga madzi ku China imakonda kunyamula chakudya, ndipo imagulitsidwa kumisika yakunja.Kaya idzakulitsa kukula bwino m'tsogolomu zimatengera zosankha zanyumba ndi kunja.
Kuchokera pomwe tikuyima, nazi njira zazikulu za board-based barrier board.
Makasitomala masiku ano sakukhutitsidwanso ndi mtundu wapakati wotchinga.Akuyang'ana mayankho ogwirizana kuti athe kuyika bwino pamapulogalamu osiyanasiyana.Bolodi liyenera kukhala lamadzimadzi komanso losamva mafuta ndi zinthu zofananira monga kutsika kwamphamvu kwa mpweya wotulutsa mpweya (MVTR) kapena kutsika kwa mpweya wa okosijeni (OTR), zomwe zimafunikira kuti zigwiritsidwe ntchito movutikira.Mwachitsanzo, OTR, yotsika kwambiri ngati 0.02 cm3/m2/tsiku mpaka pano, imakonda kuyika zipatso zouma.Momwemonso, kuyika kwa zida za ufa kumafuna MVTR yotsika.Traditional acrylic kubalalitsidwa kungapereke MVTR makhalidwe pakati 100 kuti 200g/mamita 2/tsiku, koma High Performance Barrier (HPB) kubalalitsidwa angapereke MVTR mtengo wotsika kuposa 50g/m 2/tsiku kapena ngakhale 10g/m 2/tsiku.
Kusintha kwapang'onopang'ono kupita ku HPB kuchokera ku pulasitiki kwawonedwa ndikuwonjezeka kwa HPB board pamafakitale.Mosiyana ndi zonyamula zakudya zomwe zimasamala kwambiri zachitetezo, kuyika kwa mafakitale kumagogomezera zolepheretsa komanso mtengo wopangira.Kupaka kwa HPB kumatha kugawidwa m'mafakitale ambiri komanso ma CD tsiku lililonse.Kuyika kwazinthu zamakampani kumatanthawuza mitundu yonse ya matumba a valve omwe amagwiritsidwa ntchito kunyamula zida za granular, monga simenti ndi ufa wamankhwala.Matumba a valve a mapepala nthawi zambiri amapezeka pamiyeso ya 25 kg kapena 50 kg.Chotchinga chamadzi, monga njira yokhazikika ya pulasitiki, imatha kutsimikizira kutentha kwa kutentha ndi mtengo wa MVTR kuthandizira bwino kulongedza kwa matumba a valve pamapangidwe apamwamba kwambiri.Makampani ochita upainiya omwe akulimbikitsa chitukuko cha zinthu za HPB ndi monga Alou, BASF, ndi Covestro.HPB ikhoza kupereka ntchito yolepheretsa yofunikira koma phindu lake limakhalanso ndi malonda.Mtengo wopangira ndi chimodzi mwazinthu zomwe zimalepheretsa kukula kwa msika.Kupaka mankhwala a tsiku ndi tsiku kumatanthawuza kulongedza kwa zinthu monga zotsukira, shampu, ndi chisamaliro cha khungu, ambiri mwa matumba a magalamu mazana angapo mpaka ma kilogalamu awiri.Kupaka kwa mankhwala a tsiku ndi tsiku ndikovuta kwambiri potengera magwiridwe antchito kuposa matumba a valve.Zimafunikira zinthu zofunika kwambiri monga kuwongolera chinyezi, kutsekereza mpweya komanso chitetezo chopepuka.
Poganizira kuti mapulasitiki sangawonongeke, zida zongowonjezedwanso zimakondedwa ndi makasitomala ozindikira zachilengedwe, omwe ali ndi anthu ambiri omwe ndi zotchinga zochokera ku bio.Kwa chaka chopitilira, opanga ochepa adayambitsa zinthu zawo zobalalika zochokera ku bio, kulimbikitsa kugwiritsa ntchito m'mafakitale osiyanasiyana, makamaka makampani opanga zakudya.Kuchokera pakubalalitsa kotchinga kupita ku inki zosindikizira, zomwe zili pazachilengedwe zazinthu zimakhala pakati pa 30% ndi 90%.Kuyambitsidwa kwa zida za nanocellulose kumapangitsanso kusiyanasiyana kwa zotchinga zochokera ku bio.Makampani omwe akupereka zokutira zowononga zachilengedwe akuphatikizapo Basf, Covestro, Siegwerk, Wanhua, Shengquan, Qihong, Tangju ndi zina zotero. Kupanga zida za nanocellulose pamsika wapadziko lonse kudakali koyambirira.Kafukufuku wakhala akuchitika m'mafakitale ambiri, kuphatikizapo kupanga mapepala, zokutira, mankhwala a tsiku ndi tsiku ndi mabatire amphamvu.Komabe, zofufuza zambiri zimawonedwa ngati zachiphamaso pakadali pano, kuphunzira mozama komanso kufufuza ndikofunikira.Kafukufuku wamalingaliro ndi kugwiritsa ntchito koyenera kuyenera kukhala kogwirizana kwambiri.Kuphunzira ndi kufufuza kuyenera kupitirira Cellulose Nanofibrils (CNF) kapena Microfibrillated cellulose (MFC), kuti apereke njira zambiri zomwe makasitomala angasankhe kuti asankhe zomwe zingathandize kwambiri kufunikira kwawo.
80% yazinthu zomwe zimafunikira zotchingira zokhazikika zimachokera kumisika yakunja yaku China, monga Europe, North America ndi Australia.Kufunika kwa bolodi yotchinga madzi pamsika waku Australia kwakula kwambiri pazaka zapitazi.Ndondomeko yoletsa pulasitiki ku Hong Kong yathandiziranso kukula kwa bolodi yotchinga madzi.Zofuna zake zapakhomo ku China ndizochepa kwambiri pakadali pano.Kukula kwa zokutira zobalalika zamadzi sikungodalira zoyesayesa zamakampani komanso malamulo amakampani.M'zaka zingapo zapitazi, akuluakulu aboma ku China asintha kuchoka pakulimbikitsa mapulasitiki owonongeka kukhala amitundu yosiyanasiyana opanda pulasitiki, makamaka zinthu zomwe zimatha kubwezeretsedwanso komanso zongowonjezedwanso.
Nthawi yotumiza: Apr-19-2024