A. PCB factory factor factor

1. Ukucwiliswa ngokweqile kwe-foil yethusi

Ucwecwe lwethusi lwe-electrolytic olusetshenziswa emakethe ngokuvamile luwuthayela olunohlangothi olulodwa (oluvame ukwaziwa ngokuthi ucwecwe lomlotha) kanye nocwecwe lwethusi olunohlangothi olulodwa (olwaziwa ngokujwayelekile ngokuthi ucwecwe olubomvu). Ucwecwe lwethusi olujwayelekile luvamise ukuba ucwecwe lwethusi oluvundisiwe ngaphezu kuka-70um, ucwecwe olubomvu no-18um. I-ashing foil elandelayo ngokuyisisekelo ayinakho ukwenqatshwa kwe-batch yethusi. Lapho umklamo wesifunda ungcono kunomugqa wokunamathisela, uma ukucaciswa kwe-foil yethusi kushintsha kodwa imingcele ye-etching ingaguquki, lokhu kuzokwenza i-foil yethusi ihlale kusixazululo sokufaka isikhathi eside kakhulu.

Ngenxa yokuthi i-zinc ekuqaleni iyinsimbi esebenzayo, lapho ucingo lwethusi oluku-PCB lucwiliswe esixazululweni sokunamathisela isikhathi eside, luzodala ukugqwala okukhulu okuseceleni komugqa, kubangele ukuthi umugqa omncane osekela ungqimba lwe-zinc usabeleke ngokuphelele futhi uhlukaniswe. i-substrate, okungukuthi, Ucingo lwethusi luyawa.

Esinye isimo ukuthi ayikho inkinga ngemingcele yokunamathisela ye-PCB, kodwa ukuwasha nokomisa akukuhle ngemva kokushumeka, okubangela ukuthi ucingo lwethusi luzungezwe isixazululo esisele se-etching endaweni ye-PCB. Uma ingacutshungulwanga isikhathi eside, izophinde ibangele ukweqisa nokwenqatshwa kocingo lwethusi oluseceleni. ithusi.

Lesi simo ngokuvamile sigxile emigqeni emincane, noma lapho isimo sezulu sinomswakama, amaphutha afanayo azovela kuyo yonke i-PCB. Hlubula ucingo lwethusi ukuze ubone ukuthi umbala wendawo ethintana nayo nesendlalelo sesisekelo (okuthiwa i-roughened surface) ushintshile, ohlukile kunethusi elivamile. Umbala we-foil uhlukile. Okubonayo umbala wethusi wokuqala wengqimba engezansi, futhi amandla e-peel ecwecwe lethusi emugqeni owugqinsi nawo ajwayelekile.

2. Ukungqubuzana kwendawo kwenzeke enqubweni yokukhiqiza ye-PCB, futhi intambo yethusi yahlukaniswa ne-substrate ngamandla angaphandle asebenzayo.

Lokhu kusebenza kabi kunenkinga yokuma, futhi ucingo lwethusi luzosonteka ngokusobala, noma imihuzuko noma amamaki omthelela abheke ohlangothini olufanayo. Khipha ucingo lwethusi engxenyeni enesici bese ubheka ubuso obumangelengele be-foil yethusi, ungabona ukuthi umbala we-foil yethusi ujwayelekile, ngeke kube khona ukugqwala ohlangothini olubi, namandla okuxebuka. i-foil yethusi ijwayelekile.

3. Idizayini yesekethe ye-PCB engenangqondo

Ukuklama amasekhethi amancane ane-foil yethusi ewugqinsi kuzophinde kubangele ukushumeka ngokweqile kwesekethe nokulahla ithusi.

B.Isizathu senqubo ye-laminate

Ngaphansi kwezimo ezijwayelekile, ucwecwe lwethusi kanye ne-prepreg kuzohlanganiswa ngokuphelele inqobo nje uma isigaba sokushisa esiphezulu se-laminate sicindezelwa ngaphezu kwemizuzu engama-30, ngakho ukucindezela ngokuvamile ngeke kuthinte amandla okubopha kwe-foil yethusi kanye i-substrate ku-laminate. Kodwa-ke, ohlelweni lokupakisha nokupakisha ama-laminates, uma ukungcoliswa kwe-PP noma ucwecwe lwethusi lokulimala okumahhadlahhadla kwendawo, kuzophinde kuholele ekuqineni okunganele kokubopha phakathi kwe-foil yethusi kanye ne-substrate ngemuva kokufakwa kwe-lamination, okuholela ekuphambukeni kokuma (kuphela kumapuleti amakhulu) ) Noma i-sporadic izintambo zethusi ziyawa, kodwa amandla e-peel ecwecwe le-copper eduze nendawo engaxhunyiwe akusona esingavamile.

C. Izizathu zezinto zokusetshenziswa kwe-laminate:
1. Njengoba kushiwo ngenhla, ama-foil ethusi e-electrolytic avamile yonke imikhiqizo efakwe ama-galvanized noma i-copper-plated ku-wool foil. Uma inani eliphakeme le-wool foil lingavamile ngesikhathi sokukhiqiza, noma lapho i-galvanizing / i-copper plating, amagatsha e-crystal plating ampofu, okwenza i-foil yethusi ngokwayo Amandla okuxebula awanele. Ngemuva kokuthi i-foil ecindezelwe izinto zeshidi lenziwe ku-PCB, intambo yethusi izowa ngenxa yomthelela wamandla angaphandle uma ixhunyiwe efekthri ye-electronics. Lolu hlobo lokwenqatshwa kwethusi olubi ngeke lube nokugqwala okusobala ohlangothini lapho uxebula ucingo lwethusi ukuze ubone indawo eqinile ye-foil yethusi (okungukuthi, indawo yokuxhumana ne-substrate), kodwa amandla e-peel ayo yonke i-foil yethusi azoba kakhulu. mpofu.

2. Ukuguquguquka okungalungile kwe-foil yethusi ne-resin: Amanye ama-laminates anezici ezikhethekile, njengamashidi e-HTG, asetshenziswa manje, ngoba uhlelo lwe-resin luhlukile, i-ejenti yokwelapha esetshenziswayo ngokuvamile i-PN resin, futhi isakhiwo se-resin molecular chain silula. Izinga le-crosslinking liphansi, futhi kuyadingeka ukusebenzisa i-copper foil ene-peak ekhethekile ukuyifanisa. I-foil yethusi esetshenziswa ekukhiqizeni ama-laminates ayifani nesistimu ye-resin, okuholela ekuqineni kwekhasi okwanele kwe-sheet metal-clad metal foil, kanye nokuchithwa kwezintambo zethusi okubi lapho kufakwa.