Chii chinonzi PU dehwe?

PU dehwe rinonzi polyurethane dehwe, riri rekugadzira dehwe rakagadzirwa nepolyurethane zvinhu. Pu dehwe rakajairika, rinoshandiswa zvakanyanya mumhando dzakasiyana dzezvigadzirwa zveindasitiri, senge zvipfeko, shangu, fenicha, mukati memotokari mukati uye accessories, kurongedza uye mamwe maindasitiri.

Naizvozvo, pu yeganda inobata chinzvimbo chakakosha mumusika wematehwe.

Kubva pamaitiro ekugadzira uye pfungwa yekudzivirira kwezvakatipoteredza, pu dehwe rinonyanya kukamurwa kuita marudzi maviri eakadzokororwa pu dehwe uye yechinyakare pu dehwe.

Ndeupi musiyano uripo pakati pemhando mbiri dzematehwe?

Ngatitangei kutarisa kusiyana kwemaitiro avo ekugadzira.

Traditional pu dehwe kugadzirwa maitiro:

1. Nhanho yekutanga mukugadzirwa kwepu yeganda ndeyekugadzira polyurethane, uye isocyanate (kana polyol) uye polyether, polyester uye zvimwe zvinhu zvakasvibiswa zvinogadzirwa mu polyurethane resin kuburikidza nemakemikari reaction.

2. Kupfekedza substrate, polyurethane resin yakavharwa pa substrate, sepamusoro peganda repu, iyo substrate inogona kusarudzwa zvakasiyana-siyana zvemucheka, zvakadai sekotoni, jira repolyester, nezvimwewo, kana zvimwe zvinhu zvekugadzira.

3. Kugadziriswa uye kurapwa, iyo yakavharwa substrate inogadziriswa uye inobatwa, yakadai se embossing, kudhinda, dyeing uye mamwe maitiro, kuitira kuti uwane kudiwa kunodiwa, ruvara uye pamusoro pekuita. Aya matanho ekugadzirisa anogona kuita kuti PU ganda ritaridzike sematehwe chaiwo, kana kuve neyakagadzirwa dhizaini.

4. Mushure mekurapwa: Mushure mekupedza kugadziridzwa, PU yeganda ingangoda kuita mamwe matanho mushure mekurapwa, sekudzivirira kuvhara, kurapwa kwemvura, nezvimwewo, kuti iwedzere kusimba kwayo uye maitiro.

5. Kudzora kwehutano uye kuyedzwa: Muzvikamu zvose zvekugadzirwa, kutonga kwehutano uye kuongororwa kuchaitwa kuti ive nechokwadi chokuti PU yeganda rinosangana nekugadzirwa uye tsanangudzo yezvinodiwa.

Maitiro ekugadzira akadzokororwa pu dehwe:

1. Unganidza uye udzokorore tsvina yepolyurethane zvigadzirwa, zvakadai sezvigadzirwa zvekare zvepu, tsvina yekugadzira, mushure mekugadzirisa nekuchenesa tsvina yepasi uye tsvina, uye wozoita kurapa kwekuomesa;

2. Pupura zvinhu zvakachena zvepolyurethane kuita zvidimbu zvidiki kana hupfu;

3. Shandisa musanganisi kusanganisa polyurethane particles kana powders ne polyurethane prepolymers, fillers, plasticizers, antioxidants, nezvimwewo, uye wozoisa mumudziyo wekupisa wemakemikari reaction kuti uite polyurethane matrix itsva. Iyo polyurethane matrix inozoitwa firimu kana chimiro chakatsanangurwa nekukandira, kupfekedza kana calendering.

4. Iyo yakaumbwa inopisa, inotonhorera uye inoporeswa kuti ive nechokwadi chechimiro chemuviri uye kugadzikana kwemakemikari.

5. Yakarapwa recycled pu dehwe, embossed, coated, dhayi uye kumwe kurapwa kwepamusoro kuti uwane chitarisiko chinodiwa uye magadzirirwo;

6. Ita ongororo yehutano kuti iite zvinoenderana nemitemo uye zvinodiwa. Zvino maererano nezvinodiwa nevatengi, cheka muhukuru hwakasiyana uye maumbirwo ematehwe akapedzwa;

Kuburikidza nemaitiro ekugadzira, zvinogona kunzwisiswa kuti kana zvichienzaniswa neyechinyakare pu dehwe, yakadzokororwa pu yeganda inobhadhara zvakanyanya kuchengetedzeka kwezvakatipoteredza uye kudzoreredza zviwanikwa, kuderedza kusvibiswa kwezvakatipoteredza. Tine zvitupa zveGRS zvepu uye pvc matehwe, ayo anoenderana nepfungwa yekusimudzira uye kuchengetedza kwezvakatipoteredza, uye kudzidzira mukugadzirwa kwematehwe.