PU suia

I ni nai sefulu tausaga talu ai, o le seevae alamanuia sa sailia se isi auala i le masani ai lava mea e fausia ai se sili atu malosi, faʻaaulelei ma tumau gatasi. O le sailiga na vaʻaia ai se faʻamoemoe fou ina ua faʻatupuina e le au gaosi mea se faʻalavelave i se mea manaia ma fou - Polyurethane (PU).
O le PU tasi gaosi oloa na latou lagolagoina ma saunia lenei matagofie matagofie mea mo le tele o tausaga e fausia ai se plethora o seevae. O le mafuaʻaga autu mo lona lauiloa o le PU tasi lava le lelei o seevae gaosi faʻapea foi ma le iʻuga tagata faʻaaoga i se tele lautele ma ona ofoofogia meatotino.
O le polyurethane na tele faʻaaogaina o se seevae tasi mea e atiaʻe malosi ma gafatauluga seevae maualuga-lelei mo le talosaga manaʻomia talatala faʻaaoga e pei o trekking, taʻaloga, tagata faigaluega malosi-galuega, ma isi. Peitai, o le PU tasi gaosi oloa ua mafai ai nei mo latou e faʻaaogaina o se tasi mea mo mafuaʻaga ma ofisa seevae pei o seevae aloaia, taʻaloga seevae, saogalemu seevae, seevae, sneakers, chappals ma isi. seevae seevae, ua faia nei le polyurethane sili taugofie. Ole tau talafeagai ole tuʻufaʻatasi ole PU e talafeagai ai le faʻaaogaina ile tele o ituaiga seevae nai lo ona paʻaga masani.
1. Faʻatinoga lelei o le PU naʻo fofo faʻasoa
Tasi Polyurethane ei ai uiga o le malamalama, mafanafana, suauʻu tetee, flexural tetee, ma abrasion tetee, o le 6 taimi sili atu abrasion-tetee nai lo paʻu. E tusa ai ma manaʻoga, e mafai ona faia i lua-lanu (lua-density) faʻalua seevae seevae, o le pito i lalo tasi o le micro-foamed maualuga ofuina-teteʻe luga galue, ma o le pito i totonu o se mafanafana foam faʻaalu.
Matua malamalama, ma le faapitoa kalave na o 0.3-0.8, lea e sili atu le malamalama nai lo masani ona faʻaaogaina mea e tasi, ma e sili atu talafeagai mo mafiafia-soled seevae e manaʻomia aafiaga tetee ma perforation tetee.
O le manaʻoga manaʻoga e maualalo, ma o le gaosiga e talafeagai ma teu tupe teu sefe (o le mamafa i luga o le suia e laiti i le taimi foaming, na 0.14-0.20MPa).
2. Tuʻufaʻatasia o PU naʻo fofo faʻasoa
PU tasi faʻasoa fofo mafai ona vaevaeina i polyester ituaiga ma polyether ituaiga.
Polyester type: prepolymer metotia ma semi-prepolymer metotia e tele na faʻaaoga, e masani ona aofia ai vaega e tolu A, B, ma C. O vaega o vaega taʻitasi e pei ona taʻua i lalo.
Ituaiga Polyether: sili atu tasi-laʻasaga metotia ua vaetamaina, vaega A e tuusaʻo saunia e ala i le faʻafefiloi atoa polyet polyol, mafuaʻaga, feulaina sooupu, foam faalaugatasia sooupu, filifili extender, ma isi i se mea palu, vaega B ua suia isocyanate Pe liquefied MDI.
E faigofie le metotia o le teuteuina, ma e mafai ona maua uma ai alofivae ma seevae faifai pea. Eseese ma galuega faatino e fetuʻutuʻunaʻi ma talafeagai mo ona po nei alamanuia gaosiga.