Method of manufacturing electronic component
AssigneeTeijin Limited
InventorShiro Kumakawa
Life of this patent
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Abstract
A manufacturing method for multi-layered electronic parts which is characterized in that from a roll of a polyethylene microporous sheet which has an electrode layer forming agent formed on its surface, contains 45 to 80 volume percent of inorganic filler, and has a thickness of 25 μm or less, tensile strengths of 3 kg/mm2 or more in the longitudinal direction and of 1 kg/mm2 or more in the transverse direction, and an elongation of 30% or less in the MD direction, layered electronic parts are formed via (a) a step of unwinding the sheet, (b) a step of cutting the sheet in a predetermined length, (c) a step of stacking the cut sheets, and (d) a step of cutting the layered structure and efficient production is made possible.
Claims17
A manufacturing method for fabricating multi-layered electronic parts comprising:
- (a) preparing a roll of a polyethylene microporous sheet having a longitudinal or winding direction and a transverse direction perpendicular to the winding direction, an electrode layer forming agent formed on the surface thereof, containing approximately 45 to approximately 80 volume percent of inorganic filler, having a thickness of approximately 25 μm or less, tensile strengths of approximately 3 kg/mm2 or more in the winding direction and of approximately 1 kg/mm2 or more in the transverse direction, and an elongation of approximately 30% or less in the winding direction, and a solvent representing approximately 0.0 to approximately 5.5 weight percent of said polyethylene microporous sheet, said layered electronic parts formed by further comprising the following steps:
- (b) unwinding said roll of the polyethylene microporous sheet,
- (c) cutting said polyethylene microporous sheet to a predetermined length,
- (d) stacking said cut polyethylene microporous sheets,
- (e) cutting a layered structure, and
- (f) preparing said polyethylene microporous sheets into a multilayer nonwoven fabric having fibril form substances 0.03 to 3 μm in diameter.
Dependencies are inferred from the claim text.