Isikhumba se-PVC (i-polyvinyl chloride yesikhumba eyenziweyo) yinto efana nesikhumba esenziwe kwi-polyvinyl chloride (PVC) resin, kunye nokongezwa kwezongezo ezisebenzayo ezifana ne-plasticizers kunye ne-stabilizers, ngokusebenzisa i-coating, i-calendering, okanye i-lamination. Oku kulandelayo luhlalutyo olubanzi lwenkcazo yayo, ubuthi, kunye nenkqubo yemveliso:
I. Inkcazo kunye noLwakhiwo lwePVC yesikhumba
1. Ukwakheka okusisiseko
Umaleko wesiseko: Ngokuqhelekileyo ilaphu elilukiweyo okanye elinithiweyo, elibonelela ngenkxaso yomatshini.
Umaleko ophakathi: Umaleko wePVC ogwetyiweyo oqulathe iiplastiizers kunye neearhente ezikhupha ugwebu, zinika ukuqina nokuthamba.
Umaleko ongaphezulu: I-PVC yokugquma intlaka, enokuthi ihonjiswe ukuze yenze ukuthungwa okufana nesikhumba kwaye isenokuqulatha ukunyangwa kwe-abrasion kunye nokuchasana nokungcolisa.
Ezinye iimveliso zikwabandakanya umaleko wokuncamathelisa we-polyurethane (PU) okanye i-topcoat engagungqiyo ekwaziyo ukumelana nomsebenzi owongeziweyo.
2. Iimpawu eziphambili
IiPropati zoMzimba: Ukuxhatshazwa kwe-Hydrolysis, ukuxhathisa kwe-abrasion (ukuguquguquka ukuya kuma-30,000 ukuya kumaxesha angama-100,000), kunye nokubuyiswa komlilo (i-B1 grade).
Ukulinganiselwa kokuSebenza: Ukuphefumla okungahambi kakuhle (ngaphantsi kwe-PU yesikhumba), okulungele ukuqina kumaqondo okushisa aphantsi, kunye nokukhululwa kweplastiki enokubakho ngokusetyenziswa kwexesha elide.
2. Ingxabano yetyhefu kunye nemigangatho yokhuseleko yesikhumba sePVC
Imithombo enokubakho yetyhefu
1. Izongezo eziyingozi
I-Plasticizers (i-Plasticizers): I-phthalates yendabuko (efana ne-DOP) inokuvuza kwaye iphazamise inkqubo ye-endocrine, ngakumbi xa ibonakaliswe kwioli okanye kwindawo yokushisa ephezulu.
Izizinzi zesinyithi esinzima: Izizinzi eziqulethe ilothe kunye ne-cadmium zinokufudukela emzimbeni womntu, kwaye ukuqokelela kwexesha elide kunokonakalisa izintso kunye nenkqubo ye-nervous.
I-Vinyl chloride monomer (VCM): I-VCM eseleyo kwimveliso yi-carcinogen enamandla.
2. Imingcipheko yokusingqongileyo kunye nenkunkuma
IiDioxins kunye nezinye izinto ezinetyhefu kakhulu zikhutshwa ngexesha lokutshiswa; iintsimbi ezinzima zingena emhlabeni nakwimithombo yamanzi emva kokulahlwa komhlaba.
Ukurisayikilishwa kwakhona kunzima, kwaye uninzi lwazo luba zizingcolisi ezizingisileyo.
ImiGangatho yoKhuseleko kunye neMilinganiselo yoKhuseleko
Umgangatho onyanzelekileyo waseTshayina we-GB 21550-2008 unciphisa ngokungqongqo umxholo wezinto ezinobungozi:
I-Vinyl chloride monoma: ≤5 mg/kg
Ilothe enyibilikayo: ≤90 mg/kg | I-cadmium enyibilikayo: ≤75 mg/kg
Okunye ukuguquguquka: ≤20 g/m²
Isikhumba se-PVC esihlangabezana nalo mgangatho (ofana ne-lothe- kunye ne-cadmium-free formulations, okanye ukusebenzisa i-oyile ye-soya e-epoxidized endaweni ye-DOP) inomngcipheko ophantsi wetyhefu. Nangona kunjalo, ukusebenza kwayo kokusingqongileyo kusengaphantsi kwezinye izinto ezifana ne-PU yesikhumba kunye ne-TPU.
Ingcebiso yokuthenga: Khangela iziqinisekiso zokusingqongileyo (ezifana ne-FloorScore kunye ne-GREENGUARD) kwaye ugweme ukusetyenziswa kobushushu obuphezulu (> 60 ° C) kunye nokudibanisa nokutya okunamafutha.
III. Inkqubo yePVC yeMveliso yesikhumba
Inkqubo engundoqo
1. Ukulungiswa kwezinto ezikrwada
I-Slurry ye-Slurry Layer: I-PVC resin + i-plasticizer (efana ne-DOP) + i-stabilizer (i-lead-free formulation) + umbala.
I-Foaming Layer Slurry: Yongeza i-agent evuthelayo (efana ne-azodicarbonamide) kunye ne-filter eguqulwayo (njenge-attapulgite ukuphucula ukuchasana kwemozulu).
2. Inkqubo yokubumba
Indlela yoKwaleka (Inkqubo engundoqo):
Gcoba iphepha lokukhulula ngodaka olungaphezulu (yomisa kwi-170-190 ° C) → Faka umaleko onamagwebu wodaka → Layithisa ngelaphu elisisiseko (i-polyurethane bonding) → Hlubula iphepha lokukhulula → Faka i-arhente yonyango lomphezulu ngerola.
Indlela yokuKhalenda:
Umxube weresin ukhutshelwa ngesikrufu (125-175°C) → Ishiti kwikhalenda (iqondo lobushushu lerola 165-180°C) → Icinezelwe ngokushushu ngelaphu lesiseko.
Ugwebu kunye nasemva kokulungiswa:
Isithando somlilo esinamagwebu sisebenzisa ulawulo lobushushu obuhleliweyo (110-195 ° C) ngesantya se-15-25 m / min ukwenza i-microporous structure.
I-Embossing (i-embossing enamacala amabini) kunye nonyango lwe-UV olungaphezulu luphucula ukuziva okubambekayo kunye nokunganyangeki.
INkqubo yokuQala yeNkqubo eNtsha
Izinto ezizezinye: Ioyile yeembotyi zesoya epoxidized kunye neeplasticizers zepolyester zisetyenziselwa ukubuyisela iiphthalates.
Uguqulo lokonga umbane: Itekhnoloji yokusetyenziswa kwamandla kabini kwicala elinye inciphisa ukusetyenziswa kwamandla ngama-30%; ii-arhente zokunyanga ezisekelwe emanzini zithatha indawo yeengubo ezisekelwe kwi-solvent.
- Ukuguqulwa kokusebenza: Yongeza i-ion zesilivere (i-antibacterial), udongwe olulungisiweyo (ukuphucula amandla kunye nokumelana nokuguga).
IV. Isishwankathelo: Izicelo kunye neendlela
Iindawo zesicelo: iimoto zangaphakathi (izihlalo), iifenitshala zefenitshala, izicathulo (imidlalo ephezulu), iingxowa, njl.
Iintsingiselo zeshishini:
Imigaqo-nkqubo ethintelweyo yokhuseleko lokusingqongileyo (efana nothintelo lwe-EU PVC), i-TPU/microfiber yesikhumba ngokuthe ngcembe ithatha indawo yemarike ephakathi ukuya kwephezulu.
"IiNkcazo zoBuchule zoVavanyo lweMveliso yoYilo oluHlaza" (T / GMPA 14-2023) iphunyezwe e-China ukukhuthaza ukuphuculwa kokusingqongileyo kweemveliso ezifana nesikhumba somgangatho wePVC.
Isiphelo esingundoqo: Isikhumba se-PVC sinokusetyenziswa ngokukhuselekileyo ngokuhambelana nemigangatho yokhuseleko, kodwa umngcipheko wongcoliseko kwimveliso / inkunkuma ikhonkco isekhona. Iimveliso eziqinisekisiweyo ngokusingqongileyo ngaphandle kweentsimbi ezinzima kunye ne-phthalates zikhethwa, kwaye ingqalelo ihlawulwa kwinguqu yoshishino kwi-PU / izinto ezisekelwe kwi-bio.
Ixesha lokuposa: Jul-29-2025
