Iimaski ziingubo ezingalukanga, ezingamalaphu angalukwanga ngokuchasene neempahla zelaphu, kwaye zenziwe ngemicu yesikhokelo okanye engaqhelekanga.
Iimaski zonyango ngokubanzi zizinto ezininzi ezipeyintiweyo, ezibizwa ngokuba ziiSMS (ii-2 S kunye nee-1 M) Okwangoku, elona nani liphezulu le-China zii-5, ezizezi zi-SMMMS (2 S layers and 3 M layers).
Yintoni iSMS?
Apha, uS umele uluhlu lweSpunbond. Ububanzi befayibha butyebile, malunga ne-20 microns (m). Umsebenzi ophambili we 2 S Spunbond maleko kukuxhasa yonke into engalukwanga yelaphu, elingenampembelelo inkulu kuthintelo. Eyona nto ibaluleke kakhulu kwimaski ngumaleko wokuthintela okanye uMeltblown layer M (Meltblown layer). Ubukhulu bepali yentsimbi etyhidiweyo butyebile, malunga nee-microns ezi-2 (M), ngoko ke sisinye kwishumi kububanzi besingqino esijikelezayo, esidlala indima ebalulekileyo ekuthinteleni iintsholongwane kunye nokungena kwegazi.
Iimaski zonyango ngokubanzi zihlala zinyibilikisa ilaphu lokutshiza elinobunzima beegram ezingama-20, iimaski zekomityi ze-N95 zisebenzisa ilaphu lokunyibilikisa elinobunzima beegram ezingama-40 okanye nangaphezulu.
Ngokwezibalo ze-China Industrial Textile Association Association, ukuphela kuka-2018, kukho i-1,477 yemigca yokuveliswa kwemveliso yasekhaya, i-65 ngaphezulu kunaleyo yonyaka ophelileyo, inyuke ngonyaka-nge-4.6%, phakathi kwayo, i-PP Umgca wokuveliswa kwe-spunbonded non-wovens wonyuswe nge-3.38%, umgca wemveliso ye-SMS edityanisiweyo phantse nge-13%, kunye ne-PET spunbonded non-wovens umgca wemveliso nge-9.32% Inani leenkampani ezinemveliso yonyaka edlula iitoni ezingama-50 000 zonyukile ukusuka ngo-2017. zikhawulezisa uphuhliso lwazo ukuya kwinqanaba, ukuqiniswa kunye nesiphelo esiphezulu ukuhlangabezana neemfuno zentengiso zokuphucula imveliso kunye nokuphuculwa kwetekhnoloji.
Ukusukela ngo-2018, amashishini amaninzi asekhaya aziphuhlisile iimveliso zawo kwicala lokukhanya okukhaphukhaphu, ukusebenza okuthe kratya kunye nokusebenza okuphezulu, kwaye baphumelela iziphumo. iimveliso ezisemgangathweni ezizinzileyo ziyaqhubeka ukuvela.
Ivela phi ilaphu leSMS elingalukanga?
Amalaphu e-SMS angalukanga enziwe ikakhulu nge-polypropylene PP (eneempawu zebacteriostatic zendalo kunye ne-hydrophobicity), kwaye ububanzi beentsinga bunokufikelela kwi-0.5-10 microns. Le micu ye-ultrafine ene-capillarity eyahlukileyo yonyusa isixa kunye nomphezulu wommandla weyunithi kwindawo nganye yeyunithi, ngaloo ndlela isenza amalaphu anyibilikayo anyibilikisiwe aneempawu ezintle zokucoca umoya, ezenza ukuba zibe zizinto zemaski ezilungileyo.
At present, there are three main processes for manufacturing SMS products (SMS non-woven fabric) : "one-step process", "two-step process" and "one-and-a-half step process".
One-step features is the use of raw materials section of this process, using two spun-bonded, melt-blown technology, direct spinning raw material after melting into the nets, as long as reasonable arrangement of different process of spinning systems engineering, and can make the products with different structure, each layer fabric laminated composite, is usually with a hot rolling mill consolidation into cloth."One-step method" is characterized by melting directly spinning into a net, the state of each spinning system can be independently adjusted, the production process of strong control, good health conditions, high speed, can adjust the proportion of each layer of fiber net, can produce SMS type products of various specifications, is the mainstream technology today.
Two-step process: When using the two-step process to produce SMS products, the finished products of spunbonded cloth and melt-sprayed cloth are unrolled in a certain order, and then laminated in a sequence, and then consolidated with a hot mill, and compounded into SMS products.The two-step method is characterized by simple equipment and low cost.In fact, the "two-step" process is the widely used lamination composite technology, but also can be composite of other materials, with different other materials, and with different methods, such as ultrasonic, hot melt adhesive three layers of materials together.
One-and-a-half step method: in two-step method, it is also possible to replace the molten spraying cloth product with the molten spraying layer fiber net produced in the field, thus derived the so-called "one-half step method" composite process.The spunbonded cloth is used as the bottom layer and the surface layer by two unwinding devices, and the melt spraying fiber net of the middle layer is directly spun into a net by the melt spraying system, laid on the bottom layer of the spunbonded cloth, and then covered with the upper layer of the spunbonded cloth, it is better to use a hot mill consolidated into SMS products.
Ixesha Post: Sep-14-2020