| 摘要 |
PROBLEM TO BE SOLVED: To provide a useful method for manufacturing a mesh member for screen printing, which does not have an uneven portion on a squeegee contact surface that causes paste to be hardly equally extended since a squeegee is easily caught, and has a thickness of 25μm or less, a uniform strength required as the mesh member, and the number of meshes required for high definition printing. SOLUTION: In manufacturing the mesh member for screen printing, a square shape opening with sides in a longitudinal direction and a lateral direction having the same length, or a circular opening is formed on a rolling metal foil having a thickness of 5μm or more and 25μm or less so that the openings are located in plural lines in a longitudinal direction and a lateral direction, the number of meshes is 250 (meshes/inch) or more, and at least one side composing a line section between adjacent openings is flat. The opening is formed so that a breaking load (N), when a tensile test is carried out for a test piece cut from the manufactured mesh member for screen printing with the dimensions where a width is 15 mm and a gauge length is 100 mm, has a tensile strength of 20 N/cm or more converted into a strength per a width of 1 cm of the tensile test piece, and in this case, the lower limit of an opening rate is 25% or more and the upper limit of the opening rate is equal to or less than a value which is found from a predetermined relation formula. COPYRIGHT: (C)2011,JPO&INPIT
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