PVC dehwe (polyvinyl chloride artificial leather) iganda-sematehwe rakagadzirwa kubva ku polyvinyl chloride (PVC) resin, pamwe nekuwedzera kweanoshanda ekuwedzera senge plasticizers uye stabilizers, kuburikidza coating, calendering, kana lamination. Iyi inotevera ongororo yakazara yetsanangudzo yayo, toxicity, uye maitiro ekugadzira:
I. Tsanangudzo uye Chimiro chePVC Leather
1. Basic Maumbirwo
Base layer: Kazhinji jira rakarukwa kana rakarukwa, rinopa rutsigiro rwemuchina.
Yepakati layer: PVC ine furo ine maplasticizer uye anopupa, inopa elasticity uye kupfava.
Surface layer: A PVC resin coating, inogona kunamirwa kugadzira ganda-seganda uye rinogona kunge riine zvinodzivirira abrasion uye anti-fouling marapiro.
Zvimwe zvigadzirwa zvinosanganisira polyurethane (PU) adhesive layer kana inoonekera kupfeka-inodzivirira topcoat yekuwedzera kuita.
2. Hunhu Hunokosha
Zvimiro Zvenyama: Hydrolysis kuramba, abrasion kuramba (kuchinjika kusvika ku30,000 kusvika ku100,000 nguva), uye kudzoreredza moto (B1 giredhi).
Basa Rinogumira: Kutadza kufema (kwakaderera pane PU ganda), kunowanzoita kuoma pakudziya kwakadzika, uye inogona kuburitswa yeplasticizer nekushandiswa kwenguva refu.
2. Toxicity gakava uye kuchengetedzwa mitemo yePVC dehwe
Zvikonzero zvinogona kukonzera chepfu
1. Zvinokuvadza zvinowedzera
Plasticizers (plasticizers): Traditional phthalates (senge DOP) inogona kubuda kunze uye kukanganisa endocrine system, kunyanya kana yakafumurwa nemafuta kana kupisa kwakanyanya.
Heavy metal stabilizers: Stabilizers ine lead uye cadmium inogona kutamira kumuviri wemunhu, uye kuunganidza kwenguva refu kunogona kukuvadza itsvo uye tsinga system.
Vinyl chloride monomer (VCM): Residual VCM mukugadzira igomarara rakasimba.
2. Njodzi dzezvakatipoteredza uye tsvina
Dioxin uye zvimwe zvinhu zvine chepfu zvakanyanya zvinoburitswa panguva yekupisa; simbi dzinorema dzinopinda muvhu nemvura inochera mushure mekuraswa.
Kugadzira patsva kwakaoma, uye mazhinji acho anoramba achisvibisa.
Mitemo Yekuchengetedza uye Matanho Ekudzivirira
China inosungirwa chiyero GB 21550-2008 inomisa zvakanyanya zviri mukati mezvinhu zvine njodzi:
Vinyl chloride monoma: ≤5 mg/kg
Soluble lead: ≤90 mg/kg | Soluble cadmium: ≤75 mg/kg
Zvimwe zvinoputika: ≤20 g/m²
PVC dehwe rinosangana nechiyero ichi (senge lead- uye cadmium-isina maumbirwo, kana kushandisa epoxidized soya bean oiri pachinzvimbo cheDOP) ine njodzi yakaderera yehuturu. Nekudaro, kuita kwayo kwezvakatipoteredza kuchiri kwakaderera kune zvimwe zvinhu zvakaita sePU dehwe uye TPU.
Kutenga Kurudziro: Tsvaga zvitupa zvezvakatipoteredza (zvakadai seFloorScore neGREENGUARD) uye dzivisa kushandiswa kwepamusoro-tembiricha (> 60°C) uye kusangana nezvikafu zvine mafuta.
III. PVC Leather Production Process
Core Process
1. Raw Material Kugadzirira
Surface Layer Slurry: PVC resin + plasticizer (senge DOP) + stabilizer (lead-isina kugadzirwa) + colorant.
Foaming Layer Slurry: Wedzera inofuridza (yakadai se azodicarbonamide) uye yakagadziridzwa yekuzadza (yakadai se attapulgite kunatsiridza kuramba kwemamiriro ekunze).
2. Molding Process
Coating Method (Mainstream process):
Pfekedza bepa rekuburitsa nerunyoro rwepamusoro (kuomeswa pa170-190°C) → Isa furo rinoputika reslurry → Laminate nemucheka wepasi (polyurethane bonding) → Penya bepa rekuburitsa → Isa mushonga wepamusoro nerola.
Calender nzira:
Musanganiswa weresin unoburitswa kuburikidza nesiruu (125-175°C) → Yakaiswa pacalender (roller tembiricha 165-180°C) → Kupisa-kudzvanywa nejira repagadziko.
Furo uye Post-Processing:
Choto chinopupuma chinoshandisa tembiricha yekudzora (110-195°C) nekumhanya kwe15-25 m/min kugadzira chimiro chemicroporous.
Embossing (kaviri-mativi embossing) uye pamusoro UV kurapwa kunowedzera tactile kunzwa uye kupfeka kuramba.
Environmental Friendly Process Innovation
Zvimwe Zvishandiso: Epoxidized soya bean mafuta uye polyester plasticizers anoshandiswa kutsiva phthalates.
Shanduko inochengetedza magetsi: Kaviri-sided one-time lamination technology inoderedza kushandiswa kwesimba ne30%; mvura-based treatment agents inotsiva solvent-based coatings.
-Inoshanda shanduko: Wedzera sirivheri ion (antibacterial), yakagadziridzwa ivhu (kuvandudza simba uye kuramba kuchembera).
IV. Pfupiso: Zvikumbiro uye maitiro
Nzvimbo dzekushandisa: zvemukati zvemotokari (zvigaro), zvekufukidzira fenicha, shangu (mitambo yepamusoro), mabhegi, nezvimwe.
Mafambiro eindasitiri:
Mitemo yekudzivirira kwezvakatipoteredza (yakadai seEU PVC kurambidzwa), TPU/microfiber dehwe zvishoma nezvishoma inotsiva musika wepakati-kusvika-wepamusoro.
Iyo "Technical Specifications yeGreen Dhizaini Chigadzirwa Evaluation" (T/GMPA 14-2023) inoitwa muChina kusimudzira kuchengetedzwa kwezvakatipoteredza kukwidziridzwa kwezvigadzirwa zvakaita sePVC pasi dehwe.
Mhedziso yakakosha: Dehwe rePVC rinogona kushandiswa zvakachengeteka mukuteerana nemaitiro ekuchengetedza, asi njodzi yekusvibiswa mukugadzira / tsvina link ichiripo. Zvigadzirwa zvakasimbiswa zvakatipoteredza zvisina simbi inorema uye phthalates zvinofarirwa, uye kutarisisa kunobhadharwa kushanduko yeindasitiri kuenda kuPU/bio-based materials.
Nguva yekutumira: Jul-29-2025
