Method for manufacturing composite film
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United States of America Patent
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Nov 6, 2012
Grant Date -
Apr 14, 2011
app pub date -
Dec 15, 2009
filing date -
Oct 13, 2009
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is related to a method for manufacturing composite film. The method includes the following steps: a substrate is provided; an interface agent is uniformly spread on the substrate; a silicone compound is uniformly spread on the interface agent; a first mold processed with sandblasting is provided; the substrate and the silicone compound are disposed inside the first mold so that the silicone compound is contacted to the inner surface of the first mold; the substrate and the silicone compound are vulcanized by a predetermined time; afterward, a composite film with a writing layer and the substrate is formed. The present invention is characterized in that the silicone compound is uniformly mixed with 37.5% of first silicone, 37.5% of second silicone and 25% of dimethicone; the glass sand is composed of particles with diameter of 75±25 μm and 125±25 μm by proportion of 1:9.
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