Electronic device case having convex surface caused by air injection, diary, and method for manufacturing same
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United States of America Patent
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May 7, 2019
Grant Date -
Jul 14, 2016
app pub date -
Aug 28, 2013
filing date -
Aug 22, 2013
priority date (Note) -
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Abstract
A fabrication method for a diary or electronic device cover, the fabrication method includes the steps of: disposing an elastic first synthetic resin on a joint panel; disposing a second synthetic resin on the first synthetic resin; disposing a third synthetic resin different from the first synthetic resin and the second synthetic resin in material; joining the first synthetic resin, the second synthetic resin, and the third synthetic resin at a plurality of points; and injecting air into a space between the first synthetic resin and the second synthetic resin to allow the cover to have a bulged surface.
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