Yintoni ulusu lwePU?

Isikhumba se-PU sibizwa ngokuba yi-polyurethane leather, esisikhumba esenziwe ngezinto ezenziwe nge-polyurethane. Isikhumba se-Pu sisikhumba esiqhelekileyo, esisetyenziswa kakhulu kwiimveliso ezahlukeneyo zoshishino, ezifana neempahla, izihlangu, ifenitshala, izinto zangaphakathi zeemoto kunye nezixhobo, ukupakisha kunye neminye imimandla.

Ngoko ke, isikhumba se-pu sithatha indawo ebaluleke kakhulu kwimarike yesikhumba.

Ukususela kwinkqubo yemveliso kunye nengcamango yokukhusela okusingqongileyo, isikhumba se-pu sahlulwe ngokubanzi saba ziintlobo ezimbini zesikhumba se-pu esiphinde sasetyenziswa kunye nesikhumba se-pu sendabuko.

Yintoni umahluko phakathi kweentlobo ezimbini zesikhumba?

Masiqale sijonge umahluko kwiinkqubo zabo zemveliso.

Inkqubo yemveli yokuvelisa ulusu lwe-pu:

1. Inyathelo lokuqala ekuvelisweni kwesikhumba se-pu kukwenza i-polyurethane, kwaye i-isocyanate (okanye i-polyol) kunye ne-polyether, i-polyester kunye nezinye izinto ezikrwada zenziwa zibe yi-polyurethane resin ngokusebenzisa i-chemical reaction.

2. Xa i-substrate igqunywe nge-polyurethane resin, i-substrate igqunywe nge-pu lesikhumba, i-substrate inokukhethwa kwiindidi ezahlukeneyo zeelaphu, ezifana nomqhaphu, ilaphu le-polyester, okanye ezinye izinto zokwenziwa.

3. Xa kusetyenzwa kwaye kusetyenzwa, i-substrate egqunyiweyo iyacutshungulwa kwaye iphathwe, njengokufaka i-embossing, ukuprinta, ukudaya kunye nezinye iinkqubo, ukuze kufunyanwe ubume obufunekayo, umbala kunye nesiphumo somphezulu. La manyathelo okucubungula angenza isikhumba se-PU sibonakale njengesikhumba sokwenyani, okanye sibe nesiphumo soyilo oluthile.

4. Emva konyango: Emva kokugqiba ukucubungula, ulusu lwe-PU lunokufuna ukuthatha amanyathelo athile emva konyango, njengokukhusela ukugquma, unyango olungangeni manzi, njl.njl., ukuphucula ukuqina kunye neempawu zalo.

5. Ulawulo lomgangatho kunye novavanyo: Kuzo zonke izigaba zemveliso, kuya kwenziwa ulawulo lomgangatho kunye nokuhlolwa ukuqinisekisa ukuba ulusu lwe-PU luyahlangabezana neemfuno zoyilo kunye neenkcukacha.

Inkqubo yokuvelisa isikhumba se-pu esiphinde sasetyenziswa:

1. Qokelela kwaye uhlaziye iimveliso ze-polyurethane ezilahliweyo, ezifana neemveliso zesikhumba ezindala ze-pu, inkunkuma yemveliso, emva kokucoca nokucoca ukungcola komphezulu kunye nokungcola, uze womise;

2. Yicole i-polyurethane ecocekileyo ibe ngamasuntswana amancinci okanye umgubo;

3. Sebenzisa umxube ukuxuba amasuntswana e-polyurethane okanye iipowders ezine-polyurethane prepolymers, izizalisi, iiplastiki, ii-antioxidants, njl.njl., uze uzifake kwizixhobo zokufudumeza ukuze kwenziwe i-polyurethane matrix entsha. I-polyurethane matrix emva koko yenziwa ifilimu okanye imo ethile ngokuyila, ukuyigquma okanye ukuyila ikhalenda.

4. Izinto ezenziweyo ziyafudunyezwa, zipholiswe kwaye zilungiswe ukuqinisekisa iipropati zomzimba kunye nozinzo lweekhemikhali.

5. Isikhumba se-pu esiphindiweyo esilungisiweyo, esifakwe i-embossed, esigqunywe nge-coating, esidayiweyo kunye nolunye unyango lomphezulu ukuze kufunyanwe imbonakalo kunye nobume obufunekayo;

6. Yenza uhlolo lomgangatho ukuze uhlangabezane nemigangatho neemfuno ezifanelekileyo. Emva koko ngokweemfuno zabathengi, sika zibe ziisayizi ezahlukeneyo kunye neemilo zesikhumba esigqityiweyo;

Ngenkqubo yemveliso, kunokuqondwa ukuba xa kuthelekiswa nesikhumba se-pu sendabuko, isikhumba se-pu esisetyenzisiweyo sinikela ingqalelo engakumbi kukhuseleko lokusingqongileyo kunye nokurisayikilisha izixhobo, nto leyo enciphisa ungcoliseko lokusingqongileyo. Sinezatifikethi ze-GRS zesikhumba se-pu kunye ne-pvc, ezihambelana nombono wophuhliso oluzinzileyo kunye nokhuseleko lokusingqongileyo, kunye nokusebenza kwimveliso yesikhumba.