Connector for inserting wiring board, and method for manufacturing the same

A method for manufacturing a connector for inserting a wiring board, comprising:

• preparing a spacer board that has notches from which portions are to be removed to form openings in a later stage;
• preparing adhesive layers that adhere to surfaces of the spacer board, except for the portions to be removed to form the openings;
• preparing a first substrate that includes a wiring layer, a deformable layer, a rigid layer, and a resin layer in this order, the rigid layer having window portions at regions corresponding to the openings when seen from a thickness direction of the connector;
• preparing a second substrate;
• stacking the first substrate, the second substrate, and the spacer board by placing the first substrate on one surface of the spacer board via the corresponding adhesive layer and placing the second substrate on the other surface of the spacer board via the corresponding adhesive layer, to allow a visual check on end portions of the notches formed in the spacer substrate from a thickness direction of the spacer board;
• fixing the spacer board, the first substrate, and the second substrate by performing heating and pressurizing under reduced pressure;
• and
• forming the openings by removing the portions to be removed to form the openings with the use of the notches of the spacer board.