Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing multilayer work or article
Patent
1990-05-23
1992-03-17
Dawson, Robert A.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing multilayer work or article
264257, 264258, 264511, 264571, B29C 4320
Patent
active
050966510
ABSTRACT:
A method of manufacturing a large-sized, thin-walled object of fiber reinforced synthetic resin, using inner and outer mold parts, which bound a mold cavity. A reduced pressure is created in the cavity by means of at least one vent in one of the two mold parts communicating with a vacuum source. A hardenable resin is supplied to the cavity via one or more openings in at least one of the two mold parts. The inner mold part is form retaining. A first reinforcement fiber layer is applied to the inner mold part, and then at least one foam core extending in a longitudinal direcetion and having at least one supply duct provided in it is placed on the first reinforcement layer. A second reinforcement layer is placed over the foam core, followed by applying to the second layer foam strips in which a passageway is provided. The whole arrangement is then covered with a flexible outer mold part at whose circumference a plurality of vents are provided for communication with a vacuum source. Liquid resin is supplied to the cavity at the supply ducts in the foam core and flows through the passageways of the foam strips.
REFERENCES:
patent: 3344007 (1967-09-01), Skoggard
patent: 3490978 (1970-01-01), Shockey et al.
patent: 4267147 (1981-05-01), Pogoda et al.
patent: 4359437 (1982-11-01), le Comte
patent: 4476075 (1984-10-01), Brinkmann et al.
patent: 4483669 (1984-11-01), Hahn et al.
patent: 4660498 (1987-04-01), Madison
patent: 5023042 (1991-06-01), Efferding
Dawson Robert A.
Kuhns Allan R.
LandOfFree
Method for manufacturing an object of synthetic resin 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 manufacturing an object of synthetic resin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing an object of synthetic resin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1474116