Claims
- 1. A lay-up mold apparatus, comprising:a supporting framework; a layer of perforated steel sheet supported by the frame work, the steel sheet including a plurality of perforations; a second layer of perforated steel sheet underlying the first layer of perforated steel sheet; and a coating of polymeric material overlying the perforated steel sheet, the polymeric material filling the plurality of perforations of the perforated steel sheet so that the coating is thereby interlocked with the perforated steel sheet, the coating defining a mold surface.
- 2. The apparatus of claim 1, wherein:the coating is applied by spraying a liquid polymeric material onto the perforated steel sheet.
- 3. The apparatus of claim 1, wherein:the polymeric material is polyurethane.
Parent Case Info
This application is a continuation of application Ser. No. 09/416,659, filed Oct. 12, 1999, now U.S. Pat. No. 6,378,836, the details of which are incorporated herein by reference.
US Referenced Citations (9)
Continuations (1)
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Number |
Date |
Country |
Parent |
09/416659 |
Oct 1999 |
US |
Child |
10/105108 |
|
US |