The present invention is directed to a method of forming a golf ball that contains an interpenetrating polymer network, or IPN, which includes at least two polymeric systems, in one or more of the layers. An insulating layer from which oxygen is released by heating is used as a base insulating layer of an oxide semiconductor layer which forms a channel. The invention is based on the object of providing an improved method for storage of a channel. A fastener extends through the flashing aperture. The pressure of the oil in the seal chamber is higher than pressure of the fluid. The base can further include first and second wings that each has a width that is at least twice a width of the base.