HEARTWOOD FOR SANDWICH PANEL, SANDWICH PANEL, AND METHOD FOR PRODUCING SANDWICH PANEL
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United States of America Patent
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Sep 9, 2021
app pub date -
Jun 21, 2017
filing date -
Sep 20, 2016
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Abstract
Provided is heartwood for a sandwich panel, comprising: a first polyester-based fiber which is a monocomponent fiber; and a second polyester-based fiber which is a sheath-core type bicomponent fiber. Also provided is a sandwich panel comprising: heartwood derived from the heartwood for a sandwich panel; and a surface material disposed on the sides of the heartwood. Further provided is a method for producing the sandwich panel, comprising: a step of mixing the first polyester-based fiber which is a monocomponent fiber and the second polyester-based fiber which is a sheath-core type bicomponent fiber; a step of producing the heartwood from the mixed fibers by a dry production process; and a step of heating and pressuring the heartwood.
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