'Xitlhangu lexi nga vonakiki' xa swikotela swa le xihundleni: ku peta ka le ndzeni ka giredi ya swakudya .

Loko vanhu va vuya ekaya va huma e baking ehandle hi siku ro hisa ra ximumu, va toloverile ku humesa xigwitsirisi xa swakunwa efrijini u swi wisela ehansi - hikokwalaho u hetile ku tirhisana na pende handle ko switivala. Xana u tshame u ehleketa leswaku xigwitsirisi lexi lexitsongo, ha yini xi nga tlanga xiphemu xa nkoka eku tiyisiseni ka vuhlayiseki na khwalithi ya swakudya na swakunwa, 'secret' yi fihliwile eka xigwitsirisi xa swakunwa leswi u swi nwaka. Xifunengeto xa le ndzeni lexi vonakaka xi nga ri xa nkoka, entiyisweni, xi rhwala ntirho wa nkoka wo sirhelela khwalithi ya swikumiwa na rihanyo ra vatirhisi, i xiphemu xa nkoka xa ku pakiwa ka swikotela swa aluminiyamu. Endzhaku ka sweswo, a hi kambisiseni xihundla xa aluminium can food grade coating.

Ntirho lowukulu wa ku peta ka le ndzeni ka giredi ya swakudya .

(1) Nsirhelelo wa ku rhurhumela .

Food-grade inner coating swifana naku veka leyara ya swiambalo swo tiya swa 'protective ' swa swikotela swa aluminium, kahle kahle swi sivela swilo leswinga eka xigwitsirisi kuva swi hlangana hiku kongoma na xigwitsirisi xa nsimbi.

Swakudya swo tala ni swakunwa, ngopfu-ngopfu swakunwa leswi nga ni asidi, swo tanihi swakunwa leswi tolovelekeke leswi nga ni khaboni, eka ndhawu leyi ya acid, mathangi ya nsimbi ma tala ku va ni tikhemikhali, xisweswo ma karhatiwa.

Hi food grade inner coating, yinga endla xisirhelelo xo tshembheka exikarhi ka swakunwa swa acid na swikotela swa nsimbi swa aluminium, kahle kahle swi papalata ku bola ka nsimbi, swi engetela swinene vutomi bya ntirho wa swikotela swa aluminiyamu, ku tiyisisa leswaku xitirhisiwa lexi evuton’wini bya xelufu xi tshama xi hlayisa xiyimo xa kahle xo paka.

(2) Ku tiyisisa vuhlayiseki bya swakudya .

Vuhlayiseki bya swakudya i vutomi bya bindzu ra swakudya na swakunwa, naswona ku peta swakudya swi tlanga xiave xa nkoka eka swona. Swi sivela kahle ku rhurha ka ti ions ta nsimbi kusuka eka thangi kuya eka swakudya na swakunwa, laha ku dyiwa ka nkarhi woleha ka ku thyakisa nsimbi swinga vangaka makhombo ya rihanyo (kufana na ku onhaka ka nervous system).

Hikokwalaho, standard food grade inner coating yina nkoka swinene kutiyisisa vuhlayiseki bya swakudya. Swi nga tiyisisa leswaku swakudya na swakunwa swi fikelela swipimelo swo tika swa vuhlayiseki bya swakudya eka phurosese hinkwayo ya mphakelo, leswaku vatirhisi va ta dya va ntshunxekile.

(3) Hlayisa nantswo wa xiendliwa .

Nsimbi hi yoxe yina ntirho wokarhi wa ti khemikhali, hambi kuri trace metal na swakudya na swakunwa, swinga tlhela swi hlohlotela ti khemikhali tin’wana, xisweswo swi cinca nantswo na nantswo wa swakudya na swakunwa.

Eka juzi ya mihandzu, kofi na switirhisiwa swin’wana leswingana swilaveko swale henhla swa nantswo, ntirho wa food grade inner coating i wa nkoka swinene. Xifunengeto xale ndzeni xa xiyimo xale henhla xinga hambanyisa hiku hetiseka ku hlangana exikarhi ka nsimbi na xitirhisiwa, tiyisisa leswaku nantswo na nantswo wa xitirhisiwa aswi kavanyetiwi hi swilo swale handle, leswaku swakunwa swin’wana na swin’wana leswi nandzihaka hi vaxavi i swa masungulo kufana na loko swihumesiwa ntsena, swiri fresh naswona swi phyuphyisa.

Swilaveko swa matirhelo ya aluminium can inner  coating .

(a) Ku namarhela lokunene .

Ku namarhela exikarhi ka xifunengeto xa le ndzeni na vuandlalo bya nsimbi i xisekelo xo tiyisisa khwalithi ya ku pakiwa ka swikotela swa aluminiyamu. Eka maendlelo ya vuhumelerisi bya swikotela swa aluminium, yifanele ku hundza eka nxaxamelo wa maendlelo yo rharhangana ya vuhumelerisi yofana na ku dirowa, ku peta xitempe na ku voninga. Ku tiyisisa leswaku xifunengeto xa le ndzeni xi na ku namarhela lokunene, hi ta languta hi ku hetiseka ku hlangana ka tikhemikhali exikarhi ka nchumu na nsimbi, matimba ya le xikarhi ka timolekhuli na swin’wana loko hi hlawula swilo swo peta endzeni. Hi nkarhi lowu fanaka, eka maendlelo ya vuhumelerisi, vuandlalo bya nsimbi byita tlhela byi tshunguriwa ka ha ri emahlweni, kufana na ku basisa, ku susa mafurha, passivation, na swin’wana, ku antswisa ku khwaxa na ntirho wa vuandlalo bya nsimbi, ku tlakusa ku namarhela exikarhi ka xifunengeto xa le ndzeni na nsimbi.

(2) Ku cinca-cinca lokunene .

Hi tirhisa switirhisiwa swo peta swa le ndzeni ka giredi ya swakudya, hi ku tirhisa dizayini yo hlawuleka ya xivumbeko na vutshunguri bya phurosese, hi ku olova lokunene. Switirhisiwa leswi swinga tswonga kahle naku hangalasa ntshikelelo hinkarhi wa ku lulamisiwa ka swikotela swa aluminium, leswi tiyisisaka leswaku xifunengeto xale ndzeni xinga tshama xiri kona ehansi ka swiyimo swohambana hambana swa deformation yo rharhangana, leswi nyikaka nsirhelelo lowu tshembekaka eka swikotela.

(3) Ku tiya lokunene ka tikhemikhali .

Swakudya swohambana hambana na swakunwa swina swivumbeko swohambana hambana swa ti khemikhali, aluminium can inner coating swilava kuva na ku tiya ka kahle swinene ka ti khemikhali, eka swakunwa swa acid, kufana na swakunwa leswingana khaboni, carbolic acid eka swakunwa leswingana khaboni, acid ya mihandzu eka juzi ya mihandzu, na swin’wana, swina acid yo tiya, ku khumbana ka nkarhi woleha na xifunengeto xale ndzeni swinga endla leswaku kuva na ku onhaka kumbe ku khuluka ka coating yale ndzeni, xisweswo swi khumba khwalithi ya switirhisiwa. Hikwalaho, xifunengeto xa le ndzeni xi lava ku kota ku lwisana ni ku bola ka swilo leswi nga ni asidi.

Eka swakudya na swakunwa leswingana mafurha, kufana na masi, swakunwa swa kofi, na swin’wana, xifunengeto xale ndzeni xilava kuva na mafurha yo tiya, mafurha yanga nghena eka coating yale ndzeni, ku cinca swivumbeko swa physical swa inner coating, naswona swihunguta anti-corrosion na barrier properties. Ku engetela kwalaho, swakudya swin’wana ni swakunwa swi nga ha tlhela swi va ni swilo swo hlayisa, swilo leswi nga ni muhlovo, swinun’hweriso ni swilo swin’wana leswi engetelekeke, tikhemikhali leti ti nga ha tlhela ti va ni tidigri to hambana-hambana ta ku khumbeka eka xifunengeto xa le ndzeni.

Swifunengeto swa hina swa le ndzeni swa giredi ya swakudya swi endliwa swikambelo swo tika na ku kamberiwa ku lwisana hi ndlela leyinene eka nhlaselo wa tikhemikhali leti tolovelekeke, ku tiyisisa matirhelo lama tiyeke eka tindhawu to hambana ta swikumiwa na ku nyika nsirhelelo lowu nga heriki wa ku paka ka CAN.

Switirhisiwa swa aluminiyamu swa swakunwa leswi tolovelekeke swa  xigwitsirisi xa le ndzeni .

Ku hlawuriwa ka switirhisiwa swohambana hambana swa inner coating swiya hi muxaka wa can content (xikombiso acidity, chukele), maendlelo ya vuhumelerisi (hambi kuri na mahiselo yale henhla ya sterilization) na swilaveko swa mbango (xikombiso ku funengetiwa hi mati swiva swiringanerile eka mbango). Swikotela swa swiphemu swimbirhi swa aluminiyamu swi endliwe ngopfu hi epoxy resin.

1.‌ Epoxy resin based coating ‌: it has good comprehensive performance, good processing performance, can be in the production process of cans, smoothly through a variety of complex processing procedures with epoxy resin as the main component, water-based environmental protection, non-toxic tasteless, strong acid resistance, can block the beverage and metal direct contact ‌, It is mainly used for protecting the inner wall of aluminum two-piece cans of acidic drinks such as Byala na swakunwa leswi nga na khaboni.

2. Acrylic modified epoxy coating: Ku hlanganisa acrylic resin na epoxy resin graft polymerization ku antswisa ku namarhela na ku lwisana na ku bola, leswi faneleke eka swikotela swa muxaka wa D /I wa biya na swikotela swo kufumela S .

Hi nhluvuko lowu yaka emahlweni wa sayense na thekinoloji na swilaveko leswi andzaka swa vanhu eka vuhlayiseki bya swakudya na nsirhelelo wa mbango, switirhisiwa swin’wana leswintshwa kumbe swo hlawuleka swo peta endzeni na swona swa humelela. Xikombiso, ku hlanganisiwa ka epoxy resin loku cinciweke hi mati, loku tirhisaka mati tani hi solvent, kuna swihlawulekisi swa nsirhelelo wa mbango xikan’we na chefu yale hansi, leswi fambelanaka na ntshamiseko wa sweswi wa nhluvukiso wa nsirhelelo wa mbango wa rihlaza. Muxaka lowu wa ku peta eka ku hlangana hi ku kongoma na biya, swakunwa leswi nga na khaboni, swakunwa swa tiya, kofi na swakunwa swa matimba na swa mintlangu swa hinkwaswo swa aluminiyamu swa swiphemu swimbirhi swa can wall corrosion matirhelo ya kahle swinene, hakatsongo-tsongo swi koke nyingiso na ku tsakeriwa hi makete.

Nakambe kuna switirhisiwa swin’wana swo peta endzeni leswingana mintirho yo hlawuleka, kufana na switirhisiwa swale ndzeni swo peta leswingana switirhisiwa swa antibacterial, leswinga sivelaka kukula naku tswariwa ka ti microorganisms eka thangi naswona swiya emahlweni swi engetela vutomi bya xelufu bya swakudya na swakunwa; Xitirhisiwa xale ndzeni xa coating lexingana matirhelo yale henhla ya barrier swinga sivela ku antswa nkucetelo wa oxygen, ndzhongho na swin’wana swale handle eka swakudya na swakunwa, xikan’we naku hlayisa kutsakama na khwalithi ya switirhisiwa. Hambi leswi ku tirhisiwa ka switirhisiwa leswi swintshwa swa le ndzeni swa ku peta swi nga switsongo swinene eka nkarhi wa sweswi, swi yimela ndlela ya nhluvukiso wa switirhisiwa swa le ndzeni swo peta eka swikotela eka nkarhi lowu taka, naswona swi languteriwile ku tirhisiwa ngopfu eka nkarhi lowu taka hi ku kula loku yaka emahlweni ka thekinoloji na ku hungutiwa ka ntsengo.

Swipimelo swa indasitiri na milawu ya swikotela swa aluminiyamu swa le ndzeni .

(1) Swipimelo swa le kaya .

E China, ku tiyisisa khwalithi na vuhlayiseki bya food grade inner coating ya swikotela swa aluminiyamu, nxaxamelo wa swipimelo swo tika swa rixaka na milawu swi humelela eka nkarhi wa matimu.

Exikarhi ka vona, GB 4806.10-2016 'Xiyimo xa Rixaka xa Vuhlayiseki bya Swakudya Swifunengeto swo khumbana swa swakudya na swifunengeto' i mpimanyeto wa nkoka wa xisekelo, lowu endlaka malunghiselelo lama nga erivaleni eka swilaveko swa xisekelo, swilaveko swa xithekiniki, tindlela to kambela na swiyenge swin'wana swa swifunengeto swa ku khumbana na swakudya na swifunengeto, leswi funengetaka tinxaka hinkwato ta swifunengeto swa vuhlanganisi bya swakudya ku katsa na swifunengeto swa aluminiyamu. Mimpimanyeto leyi tolovelekeke na swiletelo swi nyikiwa eka indasitiri hinkwayo.

GB 11677-2012 'Xiyimo xa tiko xa vuhlayiseki bya swakudya, ku pfariwa ka epoxy resin loku cinciweke hi mati eka rirhangu ra le ndzeni ra swikotela' swi vumbile swipimelo swo hlawuleka swa ku pfariwa ka epoxy resin loku cinciweke hi mati loku tirhisiweke eka rirhangu ra le ndzeni ra swikotela. Mpimo wu kombisa mpimo wa ku tirhisiwa na swilaveko swa xithekiniki swa swifunengeto swo tano hi vuxokoxoko. Hi mayelana na swilaveko swa xithekiniki, swipimelo swo tika swi vekiwile eka muvala na ku vonakala ka xifunengeto, xivumbeko, matirhelo ya xifunengeto na swikombiso leswi fambelanaka na mati yo peta yo peta, ku tiyisisa leswaku xifunengeto xa epoxy resin lexi cinciweke lexi cinciweke hi mati xi nga fikelela swilaveko swa vuhlayiseki bya swakudya na ku sivela ku bola loko xi cheriwa eka rirhangu ra le ndzeni ra swikotela swa aluminiyamu.

(2) Swipimelo swa matiko ya misava .

Emisaveni hinkwayo, sisiteme ya vulawuri bya switirhisiwa swa swakudya swa Nhlangano wa Yuropa na swiletelo leswi faneleke swa Ndzawulo ya Swakudya na Mirhi ya le United States (FDA) swi na nkucetelo lowukulu eka xiyenge xa ​​ku pfariwa ka swikotela swa giredi ya swakudya. Nawumbisi wa EU eka switirhisiwa swo khumbana na swakudya wu na swiletelo swo tika na vuxokoxoko eka mpimo wa vuhlayiseki na ku rhurha ka switirhisiwa swo khumbana na swakudya, leswi katsaka switirhisiwa swo hambana leswi nga hlangana na swakudya, ku katsa na switirhisiwa swo peta endzeni ka swikotela. Yi hlamusela kahle swipimelo swa ku rhurha ka tinxaka to hambana ta tikhemikhali eka switirhisiwa swo khumbana na swakudya.

Loko tiko ra hina ri vumba mpimo wa ku pfariwa ka swikotela swa giredi ya swakudya swa swikotela, hi ku gingiriteka hi dyondza eka swiyimo swa le henhla swa matiko ya misava na ntokoto, na ku lwela ku fambisana na swipimelo swa matiko ya misava. Eka swikombiso swin’wana swa nkoka na swilaveko swa xithekiniki, mpimanyeto wa hina wa tiko wu fikile kumbe wu le kusuhi na xiyimo xa le henhla xa matiko ya misava.

Mahetelelo

Tanihi elemente ya nkoka ya ku pakiwa ka swikotela swa aluminiyamu, ku pfariwa ka le ndzeni ka xiyimo xa swakudya ku tlanga xiave xa nkoka lexi nga siviwiki eka ku sivela ku bola, vuhlayiseki bya swakudya na ku hlayisa nantswo wa swikumiwa. A hi xitiyisekiso xa nkoka ntsena eka khwalithi ya swikotela, kambe na buloho ra vutshembeki leri hlanganisaka vatirhisi na mabindzu ya swakudya na swakunwa.

Hi swilaveko leswi andzaka swa vatirhisi eka vuhlayiseki bya swakudya na nsirhelelo wa mbango, indasitiri ya swakudya swa le ndzeni ka giredi ya swakudya swa swikotela na yona yi tshama yi ri karhi yi tumbuluxa swilo leswintshwa no hluvuka. Eka nkarhi lowu taka, switirhisiwa swa le ndzeni swo peta swita tumbuluxiwa eka tlhelo ra nsirhelelo wotala wa mbango xikan’we na matirhelo yale henhla, naswona endlelo ra vuhumelerisi rita va na vutlhari swinene naku antswisiwa ku fikelela xilaveko xa makete lexi cincaka.

Tanihi muphakeri wa swikotela swa aluminiyamu, hi ta tshama hi ri karhi hi namarhela eka layini ya le hansi ya khwalithi, hi tshama hi ri karhi hi engetela vuvekisi eka ndzavisiso na nhluvukiso, hi antswisa xiyimo xa thekinoloji ya vuhumelerisi, hi ku kongoma ku landzelela swipimelo swa indasitiri na milawu, ku nyika vaxavi switirhisiwa swa khwalithi ya le henhla na swikotela leswi hlayisekeke.