Kuchengetedzeka kwekurongedza chikafu

Hutsanana hwemapakeji ezvekudya hauna kukwana

(1) Zvinhu zvekurongedza chikafu zvine hutano hazvina mwero wakabatana pari zvino, hazvina kuumbwa, mashandiro akaenzana ezvigadzirwa zvekurongedza chikafu zvine hutano, uye zviri muhuwandu hushoma hwezvigadzirwa zviri mumitemo yakajairika, zvakaita sekurongedza kwakachinjika kweGB/T10004 & ndash; 2008 kurongedza purasitiki composite film, bhegi, dry compound extrusion compound, zviratidzo zve solvent residue muzvikamu zvinoenderana.

（2) Mipimo mizhinji yehutsanana yezvinhu zvekurongedza chikafu haishande pari zvino mhando dzakawanda dzekurongedza chikafu. Kuti zvionekwe kuti solvent residues dzinosanganisirwa sei, nyika dzakasiyana dziri pazvinangwa zvezvirongwa zvayo. MuGB/T10004 & ndash; 2008 packing plastic composite film, bag, dry compound extrusion compound, 'zvinhu zvikuru zviri mu standard solvent residual amount hazvipfuure 5 mg/m2, asi hazvina kutsanangura kuti solvent imhandoi, iri mu range ye 5 mg/m2 mhando dzese dze solvent quantity hazviite kupatsanurwa kwakadzama. National health standard inorambidzawo kushandisa marara epurasitiki sezvinhu zvekugadzira midziyo yepurasitiki yechikafu. Asi kunewo kuvanza kukuru kwekukuvadzwa, inogadzirwa nemidziyo yepurasitiki yechikafu ...

（3) Zvizhinji zvezvishandiso zvekurongedza hazvingori chikamu chezvinodiwa zvekuongorora masara e solvent. Tsananguro yakajairwa yezvishandiso zve solvent residues, senge kurongedza hazvifanirwe kuve nekunhuhwirira kwega, kurongedza mvura inonyudza hakufanirwe kuve nekunhuhwirira kwega, nezvimwewo, asi hapana zviratidzo zvehuwandu zvinopihwa. Kurongedza chikafu panguva yekugadzira uye kusingadzivisiki kune masara e solvents. Mukudhinda kwe gravure, mapurasitiki akabatanidzwa uye solvent yakaoma compound process, zvinoda kushandisa organic solvent yakawanda senge toluene, ethyl acetate uye ethyl ketone, nezvimwewo, zvichienderana nezvinodiwa zve solvent panguva yekugadzira, inofanira kupiswa, asi nekuda kwezvikonzero zvakasiyana-siyana mukugadzirwa chaiko, panogara paine zvakawanda kana zvishoma solvent isinganyungudike zvachose, inozivikanwa se residual solvents. Residual solvents musanganiswa wemhando dzakasiyana dze solvent, kazhinji kana zvirimo zve residual solvents zviri pasi pemwero wakati pfungwa yevanhu yekunhuhwirira haigone kunzwa kuvapo kwayo, asi manzwiro evanhu anogona kuona zvakanyanya solvent residues. Sezvakaita PVC (PVC) Kuputira kwepurasitiki kune kenza kwakakonzera mhedzisiro yakasimba mudzimba. 《GB9681— Muyero wehutano hwechigadzirwa chePVC chekurongedza chikafu muna 1988 'mune zvakatarwa, huwandu hwemonomer yevinyl chloride hushoma kana kuti hwakaenzana ne1 mg pa kilogiramu. Musanganiswa wemonomer yevinyl chloride uri muPVC cling film, mushure mekunge yave kukonzera kenza mumuviri wemunhu. European Union neUnited States, Japan, vakarambidza chigadzirwa ichi chinoshandiswa pakudya. Yakagadziridzwa kakawanda, asi zvakanyanya kuita kuti zvimwe zvezviyero izvi zvichinje. "Zviitiko zvemafirimu eCling & mukati; Zvakare zvakafumurwa kuti mitemo yenyika yedu yakakodzera yakabvisa kunonoka kwebasa. Saka kuwanikwa kwezvinhu zvekurongedza chikafu kune solvent residues kuti pave nenhamba yehuwandu kwakakosha.