Iyini isikhumba se-PU?

Isikhumba se-PU sibizwa nge-polyurethane leather, okuyisikhumba sokwenziwa esenziwe nge-polyurethane material. Isikhumba se-Pu yisikhumba esivamile, esisetshenziswa kakhulu emikhiqizweni ehlukahlukene yezimboni, njengezingubo, izicathulo, ifenisha, ingaphakathi lezimoto nezinsiza, ukupakisha nezinye izimboni.

Ngakho-ke, isikhumba se-pu sithatha isikhundla esibaluleke kakhulu emakethe yesikhumba.

Kusukela enqubweni yokukhiqiza nomqondo wokuvikela imvelo, isikhumba se-pu sihlukaniswa ikakhulukazi izinhlobo ezimbili zesikhumba se-pu esigaywe kabusha kanye nesikhumba se-pu sendabuko.

Uyini umehluko phakathi kwezinhlobo ezimbili zesikhumba?

Ake siqale sibheke umehluko ezinqubweni zabo zokukhiqiza.

Inqubo yokukhiqiza isikhumba se-pu:

1. Isinyathelo sokuqala ekukhiqizeni isikhumba se-pu ukwenza i-polyurethane, futhi i-isocyanate (noma i-polyol) ne-polyether, i-polyester nezinye izinto zokusetshenziswa zenziwe zibe yi-polyurethane resin ngokusebenzisa ukusabela kwamakhemikhali.

2. Ukugqoka i-substrate, i-polyurethane resin ehlanganiswe ku-substrate, njengobuso besikhumba se-pu, i-substrate ingakhethwa izinhlobonhlobo zezindwangu, ezifana nekotini, indwangu ye-polyester, njll, noma ezinye izinto zokwenziwa.

3. Ukucubungula nokwelashwa, i-substrate ehlanganisiwe icutshungulwa futhi iphathwe, njengokufaka i-embossing, ukuphrinta, ukudaya nezinye izinqubo, ukuze kutholwe ukuthungwa okudingekayo, umbala kanye nomphumela wendawo. Lezi zinyathelo zokucubungula zingenza isikhumba se-PU sibukeke njengesikhumba sangempela, noma sibe nomthelela othile wokuklama.

4. Ngemuva kokwelashwa: Ngemva kokuqeda ukucutshungulwa, isikhumba se-PU kungase kudingeke sithathe izinyathelo ezithile zangemva kokwelashwa, njengokuvikela ukumbozwa, ukwelashwa okungangeni manzi, njll., ukuze kuthuthukiswe ukuqina nezici zaso.

5. Ukulawulwa kwekhwalithi nokuhlolwa: Kuzo zonke izigaba zokukhiqiza, ukulawulwa kwekhwalithi nokuhlolwa kuzokwenziwa ukuze kuqinisekiswe ukuthi isikhumba se-PU sihlangabezana nezidingo zokuklama nokucaciswa.

Inqubo yokukhiqiza yesikhumba se-pu esenziwe kabusha:

1. Qoqa futhi usebenzise kabusha udoti wemikhiqizo ye-polyurethane, njengemikhiqizo yesikhumba ye-pu emidala, udoti wokukhiqiza, ngemva kokuhlunga nokuhlanza ukungcola okungaphezulu nokungcola, bese wenza ukwelashwa okomisa;

2. Gcoba i-polyurethane ehlanzekile ibe yizinhlayiya ezincane noma impushana;

3. Sebenzisa i-mixer ukuxuba izinhlayiya ze-polyurethane noma izimpushana nama-polyurethane prepolymers, ama-fillers, ama-plasticizers, ama-antioxidants, njll., bese uzifaka emishinini yokushisa ukuze kusetshenziswe amakhemikhali ukuze kwakhiwe i-polyurethane matrix entsha. I-polyurethane matrix ibe isenziwa ifilimu noma umumo ocacisiwe ngokusakazwa, ukumbozwa noma nge-calendering.

4. Izinto ezibunjiwe ziyashiswa, zipholile futhi zelashwe ukuze kuqinisekiswe izakhiwo ezibonakalayo nokuzinza kwamakhemikhali.

5. Isikhumba se-pu esenziwe kabusha eselashiwe, esiqoshiwe, esinamekiwe, esidayiwe nokunye ukwelashwa kwendawo ukuze kutholwe ukubukeka nokuthungwa okufunayo;

6. Yenza ukuhlolwa kwekhwalithi ukulenza lihlangabezane nezindinganiso ezifanele kanye nezidingo. Bese ngokwezidingo zamakhasimende, usike ube ngosayizi abahlukene kanye nezimo zesikhumba esiqediwe;

Ngenqubo yokukhiqiza, kungaqondwa ukuthi uma kuqhathaniswa nesikhumba se-pu yendabuko, isikhumba se-pu esigaywe kabusha sinaka kakhulu ukuvikelwa kwemvelo kanye nokuvuselelwa kabusha kwezinsiza, ukunciphisa ukungcoliswa kwemvelo. Sinezitifiketi ze-GRS zesikhumba se-pu ne-pvc, esibhekelela umqondo wokuthuthukiswa okusimeme nokuvikelwa kwemvelo, kanye nokwenza ukukhiqizwa kwesikhumba.