DEVICE FOR MANUFACTURING UNEVEN-THICKNESS FILM, AND METHOD FOR MANUFACTURING UNEVEN-THICKNESS FILM
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United States of America Patent
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Issued Date -
Oct 27, 2016
app pub date -
Nov 20, 2014
filing date -
Dec 20, 2013
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Abstract
The manufacturing device is provided with a first roller and a second roller for molding an uneven-thickness film. The first roller is provided with a truncated-cone-shaped portion and a disc-shaped portion, the diameter of the disc-shaped portion is larger than the diameter of a large-diameter face of the truncated-cone-shaped portion, and the second roller is provided with a column-shaped portion. A thick part is formed in a molded body of the uneven-thickness film between the truncated-cone-shaped portion of the first roller and the column-shaped portion of the second roller, and a thin connecting part is formed in the molded body between the disc-shaped portion of the first roller and the column-shaped portion of the second roller.
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