| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject high-quality film having high adhesivity and heat resistance. SOLUTION: This double-sided cover lay film is obtained by laminating the electrical insulation film of a three-layer laminate film with the heat- resistant adhesive layer of a two-layer laminate film, wherein the three-layer laminate film is prepared by laminating a releasant layer/heat-resistant adhesive layer/electrical insulation film in this order, while the two-layer laminate film is prepared by laminating a heat-resistant adhesive layer with a releasant layer. The laminating surface(s) for the final cover lay film is subjected to low- temperature plasma treatment, and the laminating operation is carried out at 40-160 deg.C under a linear pressure of 1-20 kg/cm.
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