Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1998-06-09
1999-11-16
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 455, 264 54, 2643288, 264500, B29C 4406
Patent
active
059851880
ABSTRACT:
A method and mold design for forming a molded chair seat portion and chair back support portion using air counterpressure and two different materials in an injection molding procedure. The two different materials comprise a first material having a low flexural modulus and the other material having a high flexural modulus. Other additives for tailoring the physical properties of the molded product are added to the mixture of the two materials. The air counterpressure is achieved using shop air pressure. The mold may be used to form the seat portion and the back support portion with a single stroke. An endothermic foaming agent is added to the mixture of the two materials to reduce the weight of the finished part, to reduce cycle time, and to assist in the uniform distribution of the materials that are injected into the mold cavity by the injection nozzle.
REFERENCES:
patent: 3628832 (1971-12-01), Jennings
patent: 3989212 (1976-11-01), Jennings
patent: 4002369 (1977-01-01), Jennings
patent: 4208368 (1980-06-01), Egli
patent: 4952365 (1990-08-01), Shibuya et al.
patent: 5238622 (1993-08-01), Grimmer
patent: 5417898 (1995-05-01), Volpi et al.
patent: 5662841 (1997-09-01), Guergov
patent: 5798063 (1998-08-01), Bender et al.
"Manufacturing, A Missing Link Is Found In Closed Loop Control", Injection Molding, Jun. 1997, pp. 81-84.
"Novel Injection Control Closes Loop Between Mold Cavity And Nozzle", Modern Plastics, Jun. 1997, pp. 32-33.
"NPE 1997 Highlights", Injection Molding, Aug. 1997, pp. 26-27.
"Injection Molding", Plastics World, Aug. 1997, pp. 14, 16, 24.
"Technology Newsfocus", Plastics Technology, Aug. 1997, p. 9.
Jennings Roy E.
Shiffler John W.
Aero Components, Inc.
Kuhns Allan R.
LandOfFree
Method for manufacturing a chair having separate moldable parts 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 chair having separate moldable parts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for manufacturing a chair having separate moldable parts will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1320037