Pampiri ea kopi e se nang k'habone e arotsoe ka leqephe le ka holimo kapa pampiri ea CB (Coated BackPaper), leqephe le bohareng kapa pampiri ea CFB (Coated Front & BackPaper) le leqephe le tlase kapa pampiri ea CF (Coated Front Paper).
Likarolo tse tloaelehileng tsa liaparo tsa CB le litlhoko tsa bona tsa ts'ebetso:
Liaparo tsa CB li entsoe haholo ka li-microcapsules tsa chromogenic, li-spacers, li-adhesives, li-additives le metsi.
1. Li-microcapsules ke karolo ea bohlokoa ka ho fetisisa ea liaparo tsa CB. Boleng le litekanyetso tsa li-microcapsules li amana haufi-ufi le nts'etsopele ea 'mala oa pampiri e se nang carbon. Litaba tse tiileng tsa li-microcapsules hangata ke 40% ho isa ho 50%, haholo-holo tse entsoeng ka oli ea dae e se nang mebala, lisebelisoa tsa lebota le sebopeho sa Emulsifier. Boleng ba li-microcapsules bo ama haholo phello ea ho fana ka mebala, ho potlaka ha leseli, le tšilafalo eapampiri e se nang carbon.
2. Tšebeliso ea li-spacers ka liaparo tsa CB ke ho thibela ho phatloha pele ho nako ea li-microcapsules tlas'a tšusumetso ea matla a ka ntle nakong ea ho kopanya le ho roala. Hona joale starch ea koro ke eona e sebelisoang haholo ka ho fetisisa lijaneng tsa CB. Lenane le ka sehloohong la boleng ba spacer ke boholo ba boholo ba likaroloana. Ka kakaretso ho hlokahala hore spacer e nang le boholo ba likaroloana sebakeng sa 15-25 μm e lokela ho ikarabella bakeng sa 60-80%, 'me boholo ba likaroloana ha boa lokela ho ba kholo ho feta 40 μm. Palo ea spacer ka kakaretso ke 30% ho 50% ea palo ea li-microcapsules (karolelano e omileng). Ha boholo ba karoloana ea li-microcapsules kapa matla a li-microcapsules a fokola, ho hlokahala sebaka se eketsehileng.
3. Ka kakaretso ho na le mefuta e 'meli ea li-adhesive tse sebelisoang ho li-coatings tsa CB, e' ngoe ke carboxylated styrene-butadiene latex 'me e' ngoe e fetotsoe starch. Ho boetse ho na le baetsi ba 'maloa ba sebelisang joala ba polyvinyl (PVA) ka starch e fetotsoeng. Har'a bona, palo ea carboxylated styrene-butadiene latex ka kakaretso ke 3% ho 4% (bakeng sa pente, karo-karolelano e omeletseng), 'me palo ea starch fetotsoeng ka kakaretso ke 10% ho 12% (bakeng sa pente, karo-karolelano e omileng).
4. Li-additives tse sebelisoang ho li-coatings tsa CB li kenyelletsa li-disperants, sodium carboxymethylcellulose (CMC) le li-preservatives. The dispersant ke sodium polyacrylate, tekanyo ea hangata ke 0.2% ho 0.3% (bakeng sa pente, karo-karolelano e omeletseng), 'me tekanyo ea sodium carboxymethylcellulose (CMC) hangata ke 0.5% ho 1.5% (Bakeng sa liphahlo le karolelano e omileng), e ka ba e fetotsoe ho ea ka litlhoko tsa viscosity tsa ho roala. Palo ea li-preservatives hangata ke 0.5% (ho ea ho starch, karo-karolelano e omileng).
Likarolo tse tloaelehileng tsa liaparo tsa CF le litlhoko tsa bona tsa ts'ebetso:
Liaparo tsa CF li entsoe haholo ka li-pigments, baetsi ba mebala, li-adhesives, additives le metsi.
1. Sepheo sa ho sebelisa li-pigments tsa ho roala holim'apampiri e se nang carbon ke ho tlatsa le ho koahela bokaholimo bo sa lekaneng ba pampiri ea motheo, ho ntlafatsa bosoeu le ho opacity ea pampiri, ho ntlafatsa boreleli le ho benya ha pampiri, le ho etsa hore bokaholimo ba pampiri bo be le junifomo le enke e ntle ea Absorbency, qetellong fumana e ntle. phello ea khatiso. Mebala e meholo e sebelisoang liphahlong tsa CF ke kaolin le calcium carbonate.
2. Moetsi oa mebala o sebelisitsoeng ho li-coatings tsa CF ke haholo-holo phenolic resin, 'me palo e nyenyane ea salicylate ea zinc e sebelisoa hammoho le eona. Sepheo se seholo sa ho sebelisa zinc salicylate ke ho ntlafatsa lebelo la nts'etsopele ea mebala ea pampiri e se nang carbon, haholo-holo mocheso o tlaase. . Palo ea moqapi oa mebala ka kakaretso e nka 11% ho isa ho 13% ea kakaretso ea pente (karo-karolelano e omileng), athe karolelano ea phenolic resin ho zinc salicylate ka kakaretso ke 10: 1 (karolelano e omileng), tlatsetso ea zinki salicylate Chelete ha ea lokela. e be e ngata haholo, ho seng joalo e tla eketsa tšilafalo ea pampiri.
3. Ka kakaretso ho na le mefuta e 'meli ea likhomaretsi tse sebelisoang ho li-coatings tsa CF, e' ngoe ke carboxylated styrene-butadiene latex 'me e' ngoe e fetotsoe starch. Har'a bona, palo ea carboxylated styrene-butadiene latex ka kakaretso ke 4% ho 5% (bakeng sa pente, karo-karolelano e omeletseng), 'me palo ea starch fetotsoeng ka kakaretso ke 12% ho 14% (bakeng sa pente, karo-karolelano e omileng).
4. Li-additives tse sebelisoang liphahlong tsa CF li kenyelletsa li-disperants, sodium carboxymethyl cellulose, foam inhibitors, lubricant, li-preservatives le caustic soda. Ho phaella moo, ha ho etsoa pampiri e mebala-bala, mebala e kentsoeng penteng e kenyelletsa phofo e khubelu, phofo e mosehla, 'mala o moputsoa oa emeralde le o motala oa emeralde, le mebala e lumellanang le eona.pampiri e se nang carbontse hlahiswang di kgubedu, tshehla, bolou le botala.
Nako ea poso: Apr-03-2023