The rigid copper clad laminate in which the fabric and the core material are composed of different reinforcing materials is called a composite base copper clad laminate. This type of copper clad laminate is mainly the CEM series of copper clad laminates in the NEMA/ANSI standard. In the CEM series, CEM-1 and CEM-3 are the most common varieties. In the early stage of the development and launch of CEM series composite matrix copper clad laminates, there is also a copper clad laminate with epoxy glass fiber paper as the reinforcement material and epoxy resin as the main material, which is called CEM-4.
The difference between CEM-4 and CEM-3 is in two aspects: the two outer sides of the board, without the non-flame retardant of epoxy fiberglass cloth like CEM-3.
Ina theannta sin, tá laminates clúdaithe copar tsubstráit ilchodach sraith CRM. Is laminate clúdaithe copar é le poileistear-éadach snáithíní gloine mar an fabraic agus páipéar snáithíní poileistear mar chroí-ábhar. Ina measc, déantar CRM-77 den lannán brat-lasrach atá brataithe le lasair, agus déantar CRM-8 den chlár neamh-lasair-retardant. Tá an margadh iarratais reatha de laminates clúdaithe copar bonn ilchodach sraith CEM-4 agus CRM an-bheag. Dá bhrí sin, tagraíonn an laminate brat copar bonn ilchodach mar a thugtar air go príomha don dá laminates clúdaithe copar is coitianta, CEM-1 agus CEM-3. Is é múnla an bhoird CEM-1 i gcaighdeán IPC-4101 an bord NO.10, agus is é an múnla i gcaighdeán JIS an bord CPE1F. Is é an múnla de bhord CEM-3 i gcaighdeán IPC-4101 an bord NO.12, agus is é an múnla i gcaighdeán JIS an bord CGE3F.
Teanga