| 摘要 |
<p>1,104,099. Ribbon cables. ROGERS CORPORATION. 16 March, 1965 [16 March, 1964], No. 11122/65. Heading H1A. [Also in Division H2] A tape cable is made by coating one side of a copper foil of about 5-6 mils in thickness and 1 to 3 inches in width with a suitable insulating material, such as an aromatic polyimide or aromatic polyamide-imide, coating the other side of the copper foil on those areas where conductive elements are desired with a suitable resist material such as wax, a low-melting thermoplastic resin or carbon black pigmented short oil varnish, and then removing the portions of the copper foil not protected by the resist by a suitable etchant such as an aqueous solution of ferric chloride. The resist is removed after etching with a suitable cleaner such as a blend of high-boiling aromatic and aromatic substituted hydrocarbons with necessary wetting and detergent additions. A second layer of insulating material may then be secured to the foil using an epoxy adhesive. The thickness of the insulating layers may be 1À5-2À0 mils.</p> |
