Vacuum compression molding method using preheated charge

Plastic and nonmetallic article shaping or treating: processes – Vacuum treatment of work – To degas or prevent gas entrapment

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264129, 264257, 264258, 425112, 425388, 425420, B29C 4356

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active

051300710

ABSTRACT:
Sheet molded compound (SMC) charges are preheated before being molded into exterior automotive body panels using compression molding techniques under vacuum.

REFERENCES:
patent: 2452382 (1948-10-01), Long
patent: 3041058 (1962-06-01), Straumann et al.
patent: 3504070 (1970-03-01), Zaharski
patent: 3840239 (1974-10-01), Frazekas et al.
patent: 3871060 (1975-03-01), Ladney, Jr.
patent: 3903343 (1975-09-01), Pfaff
patent: 3957943 (1976-05-01), Ogura
patent: 3959434 (1976-05-01), Squier
patent: 3997286 (1976-12-01), Gabrys
patent: 4067845 (1978-01-01), Epel et al.
patent: 4076780 (1978-02-01), Ditto
patent: 4076788 (1978-02-01), Ditto
patent: 4081578 (1978-03-01), van Essen et al.
patent: 4092393 (1978-05-01), Marocco
patent: 4204822 (1980-05-01), Hewitt
patent: 4267142 (1981-05-01), Lankheet
patent: 4290838 (1981-09-01), Reaville
patent: 4353857 (1982-10-01), Ray et al.
patent: 4367192 (1983-01-01), Arnason
patent: 4374080 (1983-02-01), Schroeder
patent: 4404261 (1983-09-01), Canning et al.
patent: 4416841 (1983-11-01), Corea et al.
patent: 4423191 (1983-12-01), Haven et al.
patent: 4438062 (1984-03-01), Griffith et al.
patent: 4488862 (1984-12-01), Epel et al.
patent: 4489031 (1984-12-01), Ogihara
patent: 4524043 (1985-06-01), McDougal
patent: 4551085 (1985-11-01), Epel et al.
patent: 4578448 (1986-03-01), Brode et al.
patent: 4597929 (1986-07-01), Blayne
patent: 4612149 (1986-09-01), Iseler et al.
patent: 4622354 (1986-11-01), Iseler et al.
patent: 4652498 (1987-03-01), Wolf et al.
patent: 4855097 (1989-08-01), Iseler et al.
J. D. Gorsuch et al., "Surface Porosity and Smoothness of SMC Molding as Affected by Vacuum and Other Molding Variables", 33rd Annual Technical Conference, 1978, Reinforced Plastics/Composites Institute, the Society of the Plastics Industry, Inc., Section 9-F, pp. 1-7.
SPI Handbook of Technology and Engineering of Reinforced Plastics/Composites, 2nd Ed, 1973, J. G. Mohr editor, pp. 158, 206, 222-228 (including flanking pp. 157, 159, 205, 207, 221 and 229).
SPI Handbook of Technology and Engineering of Reinforced Plastics/Composites, 2nd Ed, 1973, J. G. Mohr editor, p. 222.
Japanese Pat. Disclosure No. 55-158952, Appl. No. 54-66998 (Abstract Translation), Jan. 6, 1983.
Japanese Pat. Disclosure No. 38-10042, Appl. No. 36-46011 (Abstract Translation), Jul. 1966.
Japanese Pat. Disclosure No. 57-187212, Appl. No. 56-70986 (Abstract Translation), May 1985.
Japanese Pat. Disclosure No. 57-187212, Appl. No. 56-70986 (Abstract Translation), May 1985.
Iseler and Wilkinson, 39th Annual Conference, Reinforced Plastics/Composites Institute, The Society of the Plastics Industry, Inc., "A Surface Evaluation System for Class A Applications", Jan. 16-19, 1984, (4 pages).
K. Demmler et al., Kunststoffe "Zur Struktur von Formstoffen und PreBteilen aus schrumpfarm eingestellten ungesattigten Polyesterharzen", pp. 781-786, vol. 66, No. 12, 1976.
Herstellieng, et al., Kunststoff-Handbuch Band VIII, "Polyester", p. 717, 1973, (2 pages).
F. J. Amphthor, 33rd Annual Technical Conference, 1978, Reinforced Plastics/Composites Institute, The Society of Plastic Industry, Inc., "Sink Reduction Techniques for SMC Molding", (5 pages).
Jutte (Paper 730171) SAE, Jan. 12, 1973, "SMC--Sink Mechanisms and Techniques of Minimizing Sink", (12 pages).
International Harvester Engineering Report #115, Jan. 13, 1976, "Evaluation of Fiberglass Sheet Molding Compound", p. 3, (3 pages).
Owens-Corning Fiberglas' Publication No. 5-T-M-6991-A, p. 38, May 1986, (2 pages).
Isham, "Preventing Porosity in SMC Panels", SPE/PIAD--Detroit Section Regional Technical Conference, Detroit, Mich., Apr. 1, 1985.
"Porosity in SMC--Studies Show It Can Be Licked!", Technical News Bureau, Inc., undated, 11 pages, Jan. 3, 1985.
Transcript text from Videotape: Porosity Program; Aug. 2, 1984.
Memo from David L. Schweikert dated May 11, 1984.
Owens-Corning Fiberglass Memo Report, "Evaluation of the Effect of Some SMC Sheet Manufacturing and Molding Variables on Porosity", Jan. 16, 1984, 17 pages.
Owens-Corning Fiberglas Memo Report, "Reduction of Porosity in SMC Panels", Apr. 10, 1984, 12 pages.
Owens-Corning Fiberglas Memo Report, "Status Report--Porosity Elimination", Apr. 13, 1984.
Keegan, "Proper Mold Venting Is One Answer to Costly Parts Rejection", Plastics Engineering Magazine, Aug. 1978.
Jutte, "Structural SMC: Material, Process and Performance Review", SPI Annual Technical Conference, 1978.
Denton, "Mechanical Properties Characterization of an SMC-R50 Composite", SPI Annual Technical Conference, 1979.
Monk, Thermosetting Plastics, Chpts. 2, 3, 6 & 8, published by George Godwin Limited, 1981.
Owens-Corning Fiberglas Corporation Technical Paper entitled "Reducing SMC Porosity--Studies Show It Can Be Done", pp. 1-6, Jan. 3, 1985.

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