Yintoni ufele lwePU?

I-PU yesikhumba ibizwa ngokuba yi-polyurethane leather, eyenziwe ngesikhumba se-polyurethane. Isikhumba sePu sisikhumba esiqhelekileyo, esisetyenziswa ngokubanzi kwiimveliso ezahlukeneyo zeshishini, njengempahla, izihlangu, ifenitshala, ingaphakathi lemoto kunye nezixhobo, ukupakishwa kunye namanye amashishini.

Ngoko ke, i-pu yesikhumba ithatha indawo ebaluleke kakhulu kwimarike yesikhumba.

Ukusuka kwinkqubo yemveliso kunye nengqikelelo yokhuseleko lokusingqongileyo, isikhumba se-pu sahlulwe ikakhulu kwiindidi ezimbini zesikhumba esenziwe ngokutsha kunye nesikhumba se-pu semveli.

Yintoni umahluko phakathi kwezi ntlobo zimbini zethwathwa?

Masiqale sijonge umahluko kwiinkqubo zabo zemveliso.

Inkqubo yemveli yemveliso yesikhumba pu:

1. Isinyathelo sokuqala sokuvelisa i-pu yesikhumba kukwenza i-polyurethane, kunye ne-isocyanate (okanye i-polyol) kunye ne-polyether, i-polyester kunye nezinye izinto eziluhlaza zenziwe kwi-polyurethane resin ngokusebenzisa i-chemical reaction.

2. Ukugquma i-substrate, i-polyurethane resin efakwe kwi-substrate, njengobuso besikhumba se-pu, i-substrate ingakhethwa iindidi zeempahla, ezifana nekotoni, i-polyester cloth, njl., okanye ezinye izinto zokwenziwa.

3. Ukucutshungulwa kunye nonyango, i-substrate edibeneyo icutshungulwa kwaye iphathwe, njenge-embossing, ukuprinta, ukudaya kunye nezinye iinkqubo, ukuze kufumaneke ukuthungwa okufunekayo, umbala kunye nomphumo wendawo. La manyathelo okucubungula anokwenza i-PU yesikhumba ibonakale ngakumbi njengesikhumba sokwenyani, okanye ibe nesiphumo soyilo oluthile.

4. Emva kokunyanga: Emva kokugqiba ukucutshungulwa, i-PU yesikhumba ingadinga ukuba ithathe amanyathelo emva kokunyanga, njengokukhusela i-coating, unyango olungenamanzi, njl., Ukwandisa ukuqina kwayo kunye neempawu.

5. Ukulawulwa komgangatho kunye novavanyo: Kuzo zonke izigaba zokuvelisa, ukulawulwa komgangatho kunye nokuhlolwa kuya kwenziwa ukuze kuqinisekiswe ukuba i-PU yesikhumba ihlangabezana neemfuno zokuyila kunye neenkcukacha.

Inkqubo yemveliso yesikhumba erecycled pu:

1. Qokelela kwaye usebenzise kwakhona inkunkuma ye-polyurethane iimveliso, ezifana neemveliso zesikhumba ze-pu ezindala, inkunkuma yemveliso, emva kokuhlelwa kunye nokucoca ukungcola okungaphezulu kunye nokungcola, kwaye emva koko wenze unyango lokumisa;

2. Gcoba izinto ezicocekileyo ze-polyurethane zibe ngamaqhekeza amancinci okanye umgubo;

3. Sebenzisa i-mixer ukuxuba amaqhekeza e-polyurethane okanye iipowders kunye ne-polyurethane prepolymers, iifayili, i-plasticizers, i-antioxidants, njl., uze uzibeke kwisixhobo sokufudumeza ukusabela kweekhemikhali ukwenza i-polyurethane matrix entsha. I-polyurethane matrix iye yenziwa ifilimu okanye imilo echaziweyo ngokuphosa, ukugquma okanye i-calendering.

4. Izinto ezibunjiweyo zifudumala, zipholile kwaye zinyangwa ukuze kuqinisekiswe izinto eziphathekayo kunye nokuzinza kweekhemikhali.

5. Isikhumba se-pu esihlaziyiweyo, esifakwe kwi-embossed, ityatyiswe, idayiwe kunye nolunye unyango lwangaphezulu ukuze ufumane inkangeleko efunwayo kunye nokwakheka;

6. Ukuqhuba ukuhlolwa komgangatho ukwenza ukuba ihlangabezane nemigangatho efanelekileyo kunye neemfuno. Emva koko ngokweemfuno zabathengi, usike kwiisayizi ezahlukeneyo kunye neemilo zesikhumba esigqityiweyo;

Ngokusebenzisa inkqubo yokuvelisa, kunokuqondwa ukuba xa kuthelekiswa nesikhumba se-pu yendabuko, i-pu yesikhumba esetyenzisiweyo ihlawula ingqalelo ngakumbi ekukhuselweni kwendalo kunye nokuhlaziywa kwemithombo, ukunciphisa ukungcoliseka kwendalo. Sinezatifikethi ze-GRS zesikhumba se-pu kunye ne-pvc, ezijongene nombono wophuhliso oluzinzileyo kunye nokhuseleko lokusingqongileyo, kunye nokusebenza kwimveliso yesikhumba.