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US 12,466,946 B2Granted
Method for producing FRP precursor
AssigneeResonac Corporation
InventorsYuji Tosaka, Takeshi Saitoh, Masaki Yamaguchi, Tetsuro Iwakura, Yuichi Shimayama, Kosuke Murai, Masashi Oji
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Abstract
Provided is a production method of an FRP precursor. The method includes: a pre-coating step of applying a resin varnish having a filler content of 5 vol % or less in a solid content thereof, to a sheet-shaped aggregate, and a melt-pasting step of melt-pasting a pair of resin films, each having a filler content of 30 vol % or more, to both surfaces of the aggregate, after the pre-coating step.
Claims19
A method of producing an FRP precursor, the method comprising:
- pre-coating a resin varnish having a filler content of 5 vol % or less in a solid content thereof, to a sheet-shaped aggregate;
- providing a pair of resin films, each having a filler content of 30 vol % or more;
- and
- melt-pasting the pair of resin films, each having a filler content of 30 vol % or more, to respective sides of the aggregate, after the pre-coating,
- wherein in the pre-coating, an volume of solids in the resin varnish to be used is determined by the following formula (1):
- 0.05
- ≤
- Volume
-
- of
-
- solid
-
- content
-
- of
-
- applied
-
- resin
-
- varnish
-
- (
- cm
- 3
- /
- cm
- 2
- )
- Bulk
-
- volume
-
- of
-
- aggregate
-
- (
- cm
- 3
- /
- cm
- 2
- )
- -
-
- True
-
- volume
-
- of
-
- aggregate
-
- (
- cm
- 3
- /
- cm
- 2
- )
- ≤
- 0.6
- .
- (
- 1
- )
65 more elements
Dependencies are inferred from the claim text.