Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1991-08-28
1993-02-02
Heitbrink, Jill L.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
2643289, 425149, B29C 4576
Patent
active
051836050
ABSTRACT:
A method for injecting molding material into a self-clamping mold. The method comprises the steps of supporting the mold in a support frame clamped in engagement with an injector using a lift mechanism. The pressure required to inject material into the mold is pre-determined and applied by the lifting mechanism to maintain the condition and position of self-clamping mold during injection, and is a function of the area of exposed sprue openings in the mold. The molding material is transferred into the injector. The temperature of the molding material transferred to the mold is controlled, and the molding material is injected into the mold under the pre-determined pressure using the injector, while clamping the mold within the frame with a force of less than 25 tons.
REFERENCES:
patent: 1935794 (1933-11-01), Geyer
patent: 2536120 (1951-01-01), Beare
patent: 2790206 (1957-04-01), Cofek
patent: 3005235 (1961-10-01), Patera
patent: 3308508 (1967-03-01), Schrenk
patent: 3506755 (1970-04-01), Rudder
patent: 3768952 (1973-10-01), Connolly
patent: 3924995 (1975-12-01), Crooks et al.
patent: 3973891 (1976-08-01), Yamada
patent: 3982869 (1976-09-01), Eggers
patent: 4111623 (1978-09-01), Black
patent: 4186161 (1980-01-01), Ulmschneider
patent: 4315727 (1982-02-01), Black
patent: 4315885 (1982-02-01), Lemelson
patent: 4352654 (1982-10-01), Heimberger
patent: 4372738 (1983-02-01), Black et al.
patent: 4403810 (1983-09-01), Bieneck
patent: 4424015 (1984-01-01), Black et al.
patent: 4561626 (1985-12-01), Black
patent: 4575328 (1986-03-01), Fierkens
patent: 4604045 (1986-08-01), Black
patent: 4671764 (1987-06-01), Hehl
patent: 4693679 (1987-09-01), Marth
patent: 4790739 (1988-12-01), Manfredi
patent: 4877387 (1989-10-01), Fierkens
patent: 4961888 (1990-10-01), Brown
patent: 5053173 (1991-10-01), Sticht
Frados, Plastic Engineering Handbook, 1976 pp. 445-446.
Han, Rheology in Polymer Processing 1976, pp. 284-286.
Baxter David E.
Brown Robert L.
GenCorp Inc.
Heitbrink Jill L.
LandOfFree
Method for injection into a self-clamping mold 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 injection into a self-clamping mold, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for injection into a self-clamping mold will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-5804