Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1990-09-06
1992-01-14
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264324, 264325, 156222, 156228, 156283, B29C 4320, B29C 4514
Patent
active
050808516
ABSTRACT:
A method for forming stabilized preforms for complex composite articles is disclosed using a solid meltable uncatalyzed thermosetting resin as the stabilizing agent. The resin is applied to each layer of the preform and heated to melt the resin and bond the layers together. After cooling, the resin resolidifies but does not set and thereby holds the layers in the desired preform shape. The layers can be first formed into a flat sheet as a raw material from which shaped preforms can be made by cutting the sheet into sections which are placed over a mandrel and reheating to thereby remelt the solid resin to allow the preform to conform to the shape of the mandrel. Utilizing this process allows complex composite parts to be easily preformed and assembled prior to placement in a mold for resin injection molding, without inhibiting part strength as the resin is compatible with the injection resin and is cocatalyzed by the catalyst contained in the injection resin.
REFERENCES:
patent: 2476283 (1949-07-01), Castellan
patent: 3137750 (1964-06-01), Gringras
patent: 3589956 (1971-06-01), Kranz
patent: 3684639 (1972-08-01), Keberle
patent: 3788923 (1974-01-01), Solimar
patent: 3865661 (1975-02-01), Hata
patent: 4195112 (1980-03-01), Sheard
patent: 4470862 (1984-09-01), More
patent: 4568581 (1986-02-01), Peoples
patent: 4609519 (1986-09-01), Pichard et al.
patent: 4663225 (1987-05-01), Farley
patent: 4695509 (1987-09-01), Cordova et al.
patent: 4741873 (1988-05-01), Fischer et al.
patent: 4762749 (1988-08-01), Johnson et al.
patent: 4800058 (1989-01-01), Younes
patent: 4988469 (1991-01-01), Reavely et al.
Brace Michael W.
Flonc Nicholas P.
Durkin II Jeremiah F.
United Technologies Corporation
Woo Jay H.
LandOfFree
Method for stabilizing complex composite preforms does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for stabilizing complex composite preforms, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for stabilizing complex composite preforms will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-539860