Halogen free coverlay (CVL) is a kind of high temperature thermosetting epoxy resin coated with polyimide film. Then, the insulating coating is made of release paper as insulation layer and cured by high temperature. The series of materials are widely used in FPC manufacturing for line protection and insulation.
·產(chǎn)品結(jié)構(gòu)及系列Product Structure and Series
產(chǎn)品結(jié)構(gòu) Product structure | 產(chǎn)品系列 Product serides | 說明Instruction |
Pi膜 PI Film 環(huán)氧樹脂 Adhesive 離型紙 Release Paper | 黃色覆蓋膜Yellow CVL 黑色覆蓋膜Black CVL | 所有覆蓋膜系列產(chǎn)品均可按照客戶要求進(jìn)行膠層涂布，膠層厚度范圍13um-75um。 |
·產(chǎn)品規(guī)格 Product Specifications
Item（項(xiàng)目） | Test method（測試方法） | Specification（規(guī)格） |
Width（幅寬） | Specification | 250±1mm |
Polyimide thickness（PI厚度） | Specification | 12.5um、25um |
Adhesive thickness（膠層厚度） | Specification | 15-25um |
Shelf life（保質(zhì)期） | ＜10℃, ＜65%RH | 3months |
23℃±3℃, ＜65%RH | 10days |
·產(chǎn)品性能 Product Properties
Item（項(xiàng)目） | Test method （測試方法） | Specification （規(guī)格） | |
Peel strength(剝離強(qiáng)度) | IPC TM650 2.4.9 | ≧0.5kgf/cm | |
Adhesive flow(溢膠量) | IPC TM650 2.3.17.1 | ≦0.2mm | |
Solder Float Resistance（耐焊性） (after 165℃±5℃ 1hr) ( 165℃±5℃烘烤1小時后) | IPC TM650 2.4.13 | 288℃ 10sec | |
Dimensional stability (尺寸穩(wěn)定性) | IPC TM650 2.2.4 | TD≦±0.2% | |
MD≦±0.2% | |||
Chemical resistance （耐化學(xué)品性） | MEK 5min（丁酮浸泡5分鐘測試） | IPC TM650 2.3.2 | No evident of defects |
HCl 5% 5min（5%鹽酸溶液浸泡5分鐘測試） | |||
NaOH 5% 5min（5%氫氧化鈉溶液浸泡5分鐘測試） | |||
Surface Resistivity（Ω） (表面電阻率) | IPC TM650 2.5.17 | ≧1.0*1011Ω | |
Volume Resistivity（Ω.cm） (體積電阻率) | IPC TM650 2.5.17 | ≧1.0*1012Ω.cm | |
·產(chǎn)品應(yīng)用 Product Application
該系列產(chǎn)品廣泛應(yīng)用于FPC制造，以作線路保護(hù)及絕緣層。
The series of materials are widely used in FPC manufacturing for line protection and insulation.