A. PCB fekitari muitiro zvinhu
1. Kunyanya kuchekwa kwefoiri yemhangura
Iyo electrolytic yemhangura foil inoshandiswa pamusika inowanzo galvanized imwe-side (inowanzozivikanwa seashing foil) uye imwechete-sided copper plating (inowanzozivikanwa sered foil). Iyo yakajairika foil yemhangura inowanzo galvanized copper foil pamusoro pe70um, red foil uye 18um. Iyo inotevera ashing foil haina kunyanya kurambwa nebatch copper. Kana iyo yedunhu dhizaini iri nani kupfuura mutsara we etching, kana iyo yemhangura foil yakatarwa ichichinja asi etching paramita haashanduke, izvi zvichaita kuti foil yemhangura igare mune etching mhinduro kwenguva yakareba.
Nekuti zinc pakutanga isimbi inoshanda, kana waya yemhangura iri paPCB yakanyudzwa mumhinduro ye etching kwenguva yakareba, zvinokonzeresa kuonda kwakanyanyisa kwemutsara, zvichikonzera kuti imwe mutsara mutete unotsigira zinc layer inyatso batwa uye kupatsanurwa kubva. iyo substrate, kureva kuti, waya yemhangura inodonha.
Imwe mamiriro ezvinhu ndeyekuti hapana dambudziko nePCB etching parameters, asi kugeza nekuomeswa hakuna kunaka mushure mekucheka, zvichiita kuti waya yemhangura ive yakakomberedzwa neyakasara etching mhinduro paPCB. Kana ikasagadziriswa kwenguva yakareba, inokonzeresa kuwanda kwemhangura waya padivi etching uye kurambwa. mhangura.
Mamiriro ezvinhu aya anowanzo kutariswa pamitsetse mitete, kana mamiriro ekunze akanyorova, zvirema zvakafanana zvinoonekwa paPCB yese. Bvisa waya yemhangura kuti uone kuti ruvara rwenzvimbo yayo yekusangana ine base layer (inonzi inonzi roughened surface) yachinja, yakasiyana neyenguva dzose mhangura. Iyo foil ruvara rwakasiyana. Zvaunoona iruvara rwemhangura rwekutanga rwepasi, uye kusimba kweganda refoiri yemhangura pamutsetse wakakora zvakare.
2. Kudhumhana kwenzvimbo kwakaitika muPCB yekugadzira, uye waya yemhangura yakaparadzaniswa kubva kune substrate nemagetsi ekunze simba.
Kuita kwakashata uku kune dambudziko nekumisikidza, uye waya yemhangura ichave yakamonyoroka sezviri pachena, kana kukwenya kana kukanganiswa mamaki munzira imwechete. Bvisa tambo yemhangura pane yakakanganisika uye tarisa kune yakaoma pamusoro pefoil yemhangura, iwe unogona kuona kuti ruvara rwekushata kwefoil yemhangura ndeyakajairika, hapazove nekushata kwakashata, uye simba rekusvuura. iyo foil yemhangura ndeye yakajairika.
3. Zvisinganzwisisike PCB redunhu dhizaini
Kugadzira masekete akatetepa ane gobvu remhangura foil kunokonzeresa kuwandisa kwedunhu uye kurasira mhangura.
B. Chikonzero chekugadzirisa laminate
Mumamiriro ezvinhu akajairwa, iyo foil yemhangura uye prepreg ichave yakanyatso kusanganiswa sekureba yakanyanya tembiricha chikamu chelaminate ichipisa ichidzvanywa kweanopfuura maminetsi makumi matatu, saka kudzvanya hakuzokanganisa simba rekubatanidza refoiri yemhangura uye substrate mune laminate. Nekudaro, mukuita kurongedza uye kurongedza laminates, kana PP kusvibiswa kana yemhangura foil rough kukuvara kwepamusoro, zvinozotungamira kune isina kukwana bonding simba pakati pemhangura foil uye substrate mushure melamination, zvichikonzera kutsauka kwekumisikidza (chete kwemahwendefa makuru)) waya dzemhangura dzinodonha, asi kusimba kweganda refoiri yemhangura pedyo ne-off-line hakuna kushata.
C. Zvikonzero zve laminate mbishi zvinhu:
1. Sezvataurwa pamusoro apa, akajairika electrolytic foil mhangura zvinhu zvese zvakave nemarara kana mhangura-yakaputirwa pamvere dzemakwai. Kana iyo yepamusoro kukosha kweiyo foil yemvere isina kujairika panguva yekugadzirwa, kana kana galvanizing / mhangura plating, plating crystal matavi akashata, zvichiita kuti foil yemhangura pachayo Simba rekusvuura harina kukwana. Mushure meiyo yakashata foil yakadzvanywa pepa zvinhu yagadzirwa muPCB, waya yemhangura inodonha nekuda kwekukanganisa kwesimba rekunze kana yavharirwa mufekitori yemagetsi. Rudzi urwu rwekurambwa kwemhangura kwakashata hakuzove nekuora kweparutivi paunenge uchipepeta waya yemhangura kuti uone kushata kwefoiri yemhangura (kureva, nzvimbo yekusangana neiyo substrate), asi kusimba kweganda refoiri yese yemhangura kuchave kwakanyanya. varombo.
2. Kusagona kuchinjika kwemhangura foil uye resin: Mamwe maramina ane akakosha zvinhu, senge HTG mashiti, anoshandiswa ikozvino, nekuti resin system yakasiyana, mushonga wekurapa unoshandiswa unowanzo PN resin, uye resin molecular chain chimiro chiri nyore. Iyo dhigirii yekuyambuka yakaderera, uye zvinodikanwa kushandisa foil yemhangura ine yakakosha peak kuti ienderane nayo. Iyo foil yemhangura inoshandiswa mukugadzira laminates haienderane neiyo resin system, zvichikonzera kusakwana kwesvumbunuro simba repepa resimbi-akapfeka simbi foil, uye kushata kwemhangura waya pakudururwa pakuiswa.