PU tawv yog dab tsi?

PU tawv yog hu ua polyurethane tawv, uas yog cov tawv hluavtaws ua los ntawm cov khoom siv polyurethane. Pu tawv yog ib hom tawv tawv, dav siv hauv ntau yam khoom lag luam, xws li khaub ncaws, khau, rooj tog, tsheb sab hauv thiab khoom siv, ntim khoom thiab lwm yam lag luam.

Yog li ntawd, pu tawv occupies ib qho tseem ceeb heev nyob rau hauv lub lag luam tawv.

Los ntawm cov txheej txheem tsim khoom thiab kev tiv thaiv ib puag ncig, pu tawv feem ntau muab faib ua ob hom tawv pu tawv thiab tsoos pu tawv.

Qhov txawv ntawm ob hom tawv yog dab tsi?

Cia peb xub saib qhov sib txawv ntawm lawv cov txheej txheem ntau lawm.

Traditional pu tawv ntau lawm txheej txheem:

1. Thawj kauj ruam hauv kev tsim cov tawv pu yog ua polyurethane, thiab cov isocyanate (los yog polyol) thiab polyether, polyester thiab lwm yam raw khoom yog ua rau polyurethane resin los ntawm cov tshuaj tiv thaiv.

2. Txheej txheej substrate, polyurethane resin coated rau ntawm lub substrate, raws li lub nto ntawm pu tawv, lub substrate yuav xaiv tau ntau yam ntawm textiles, xws li paj rwb, polyester ntaub, thiab lwm yam, los yog lwm yam khoom siv hluavtaws.

3. Kev ua haujlwm thiab kev kho mob, coated substrate yog ua tiav thiab kho, xws li embossing, luam ntawv, dyeing thiab lwm yam txheej txheem, thiaj li yuav tau txais qhov xav tau kev ntxhib los mos, xim thiab cov nyhuv nto. Cov txheej txheem ua tiav no tuaj yeem ua rau PU tawv zoo li tawv tiag tiag, lossis muaj cov qauv tsim tshwj xeeb.

4. Kev kho tom qab: Tom qab ua tiav, PU tawv yuav tsum tau ua qee yam kev kho mob tom qab, xws li txheej tiv thaiv, kev kho dej tsis zoo, thiab lwm yam, txhawm rau txhim kho nws cov kav ntev thiab cov yam ntxwv.

5. Kev tswj xyuas thiab kev soj ntsuam zoo: Hauv txhua theem ntawm kev tsim khoom, kev tswj xyuas zoo thiab kev tshuaj xyuas yuav raug ua kom ntseeg tau tias PU tawv ua tau raws li cov qauv tsim thiab cov kev cai tshwj xeeb.

Cov txheej txheem tsim khoom ntawm cov tawv pu tawv:

1. Sau thiab rov ua dua cov khoom pov tseg polyurethane, xws li cov khoom qub pu tawv, cov khoom pov tseg, tom qab sorting thiab tu deg impurities thiab av, thiab tom qab ntawd ua kom qhuav kev kho mob;

2. Pulverize cov khoom siv polyurethane huv si rau hauv cov khoom me me lossis hmoov;

3. Siv cov khoom sib tov los sib xyaw cov khoom siv polyurethane los yog hmoov nrog polyurethane prepolymers, fillers, plasticizers, antioxidants, thiab lwm yam, thiab muab tso rau hauv cov khoom siv cua sov rau cov tshuaj tiv thaiv los tsim cov polyurethane matrix tshiab. Cov polyurethane matrix yog tom qab ntawd ua rau hauv cov yeeb yaj kiab lossis cov duab qhia los ntawm casting, txheej lossis calendering.

4. Cov khoom tsim yog rhuab, txias thiab kho kom lub cev muaj zog thiab tshuaj lom neeg ruaj khov.

5. Kho kom rov siv dua pu tawv, embossed, coated, dyed thiab lwm yam kev kho deg kom tau raws li qhov xav tau thiab kev ntxhib los mos;

6. Ua kev soj ntsuam zoo kom ua tau raws li cov qauv thiab cov kev cai. Tom qab ntawd raws li cov neeg siv khoom xav tau, txiav rau hauv ntau qhov sib txawv thiab cov duab ntawm cov tawv tiav;

Los ntawm cov txheej txheem tsim khoom, nws tuaj yeem nkag siab tias piv nrog cov tawv pu tawv, cov tawv pu rov siv dua them nyiaj ntau dua rau kev tiv thaiv ib puag ncig thiab kev rov ua dua tshiab, txo cov pa phem ib puag ncig. Peb muaj GRS daim ntawv pov thawj rau pu thiab pvc tawv, uas ua raws li lub tswv yim ntawm kev txhim kho kom ruaj khov thiab kev tiv thaiv ib puag ncig, thiab kev xyaum ua tawv tawv.