A manufacturing method of flexible laminates
A manufacturing method and technology of laminated boards, applied in the fields of printed circuit manufacturing, chemical instruments and methods, manufacturing printed circuit precursors, etc., can solve the problems of not considering the tension of laminated bodies, etc.
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Embodiment 1
[0052] use figure 1 The thermal laminator shown produces flexible laminates. First, a roll wrapped with a non-thermoplastic polyimide film having a thickness of 125 μm having a linear expansion coefficient at 200° C. to 300° C. of 16 ppm / ° C. , a roll of copper foil having a thickness of 18 μm, and a heat-resistant adhesive film 3 wrapped with a thermoplastic polyimide resin on both sides of a core layer composed of a non-thermoplastic polyimide film The composition (glass transition temperature: 240° C.) and a roll of an adhesive film having a three-layer structure with a thickness of 25 μm were set on a thermal laminator.
[0053] Then, after these rolls were rotated, static electricity removal, foreign matter removal, and preheating were carried out, in the state where the protective film 1 was preheated for 1 / 2 turn around the pair of metal rolls 4, the heating layer shown in Table 1 was used. Lamination conditions (temperature: 360°C, linear pressure: 196N / cm, thermal ...
Embodiment 2
[0071] A flexible laminate was produced in the same manner as in Example 1 except that the tension of the laminate when peeling off the non-thermoplastic polyimide film as the protective film was 300 N / m. Then, the appearance and dimensional stability of the flexible laminate were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 1.
[0072] As shown in Table 1, every 1m of the flexible laminated board in Example 2 2 There is less than one wrinkle on the upper surface. In addition, the dimensional stability in the MD direction and the TD direction was respectively +0.04% (MD direction) and -0.03% (TD direction).
Embodiment 3
[0074] A flexible laminate was produced in the same manner as in Example 1 except that the tension of the laminate before peeling off the non-thermoplastic polyimide film as a protective film was 50 N / m. Then, the appearance and dimensional stability of the flexible laminate were evaluated in the same manner as in Example 1. The evaluation results are shown in Table 1.
[0075] As shown in Table 1, no wrinkles were produced at all on the flexible laminated board of Example 3. In addition, the dimensional stability in the MD direction and the TD direction were respectively +0.03% (MD direction), -0.02% (TD direction ).
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