Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se – Utilizing surface to be reproduced as an impression pattern
Patent
1991-02-13
1993-05-04
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
Utilizing surface to be reproduced as an impression pattern
156155, 1563042, 156305, 264317, 2643288, 26432814, B29C 3340
Patent
active
052079643
ABSTRACT:
A method for manufacturing a plastic hollow product with complicated geometry using water soluble resin. The method includes the steps of making a half shell of the core out of the water soluble resin, joining the half shells together into a piece by solvent welding, ultrasonic welding, vibration welding, or the like, overmolding the core with water resistant resin, and dissolving the core away from the overmolded product by spraying hot water thereto. The injection conditions such as injection time, injection speed, and injection pressure are varied in the respective zone which is divided into several divisions by same distance in the injection cylinder. Therefore, injection procedure is performed in a stepwise manner to make a hollow product.
REFERENCES:
patent: 2280074 (1942-04-01), Halsall
patent: 2285502 (1942-06-01), Dreyfus
patent: 2975823 (1961-03-01), Ponnock
patent: 3767740 (1973-10-01), Jones-Hinton et al.
patent: 4137117 (1979-01-01), Jones
patent: 4174365 (1979-11-01), Pahl
patent: 4181549 (1980-01-01), McPhee
patent: 4311446 (1982-01-01), Hold et al.
patent: 4329313 (1982-05-01), Miller et al.
patent: 4648827 (1987-03-01), Laimer et al.
patent: 4651382 (1987-03-01), Krolick
patent: 4741685 (1988-05-01), Inaba et al.
patent: 4755122 (1988-07-01), Schmidt
patent: 4988273 (1991-01-01), Faig et al.
patent: 5030395 (1991-07-01), Kamiguchi et al.
Modern Plastics Intl., Nov. 1989, pp. 7-8.
Davis Robert B.
Woo Jay H.
LandOfFree
Method for manufacturing a plastic hollow product using water so 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 a plastic hollow product using water so, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing a plastic hollow product using water so will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1973384