PREPREG FOR CORELESS SUBSTRATE, METHOD AND DEVICE FOR PRODUCING PREPREG FOR CORELESS SUBSTRATE, CORELESS SUBSTRATE, AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for producing a prepreg for a coreless substrate, whereby it is possible to obtain the prepreg for the coreless substrate having excellent workability, and having excellent thickness accuracy and dimensional stability; the prepreg for the coreless substrate obtained by a production method; and the coreless substrate using the prepreg for the coreless substrate, and the method for producing the coreless substrate.;SOLUTION: A method for producing a prepreg for a coreless substrate includes a step of attaching a resin film (I) containing a thermosetting resin composition to at least one surface of a sheet-like aggregate. Attachment is performed by a film pressure-welding step of pressure-welding, under a normal pressure, the resin film (I) to at least one surface of the sheet-like aggregate. There is also provided a device for producing the prepreg for the coreless substrate. There are further provided the prepreg for the coreless substrate obtained by a production method; and the coreless substrate using the prepreg for the coreless substrate, and the method of producing the coreless substrate.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT