Metal clad laminated plate and method for manufacturing metal clad laminated plate

A method for manufacturing a metal clad laminated plate, the metal clad laminated plate comprising:

• an insulating layer containing a liquid crystal polymer;
• and
• a metal foil lying on the insulating layer,
• the metal foil being a copper foil,
• the metal foil having a surface lying on the insulating layer, the surface having a mean width of profile elements (RSm) of greater than or equal to 10 82 m and less than or equal to 45μm, the mean width being calculated from a roughness curve obtained from a cross section of the metal clad laminated plate,
• the metal clad laminated plate having a plate thickness accuracy of less than ±20%,
• a pull strength of the metal foil from the insulating layer being greater than or equal to 0.8N/mm,
• the method comprising:
• hot pressing a laminated body by a double belt press method, the laminated body including an insulating film containing the liquid crystal polymer and the metal foil lying on the insulating film,
• in the hot pressing of the laminated body, a highest heating temperature being higher than or equal to a temperature lower than a melting point of the insulating film by 5° C. and being lower than or equal to a temperature higher than the melting point by 20° C., and the highest heating temperature being maintained for longer than or equal to 20 seconds and shorter than or equal to 120 seconds.