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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
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출원번호 | US-0294179 (1989-01-06) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 12 인용 특허 : 6 |
A surface-reinforced lightweight article is described, which includes a honeycomb structure whose sidewalls are reinforced by an expanded foam. The article can be manufactured by laying a fibrous third layer, such as several layers of dry tissue paper backed by a layer of dry fiberglass cloth, on th
A surface-reinforced article, comprising: a core of foam material having a first outer side; a surface region of said article which includes a multi-cell honeycomb-type sheet structure lying on said first outer side of said core and a porous but flow-through resistant layer lying outside said honeyc
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