Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By mechanically introducing gas into material
Patent
1998-09-16
2000-09-26
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
By mechanically introducing gas into material
264 459, 264 53, 264DIG5, 521 97, B29C 4420
Patent
active
061238813
ABSTRACT:
In one embodiment, the present invention relates to a process for preparing foam board or sheet including the steps of (A) forming a foamable mixture of (1) a major amount of a styrenic polymer having a high melt index, (2) a minor amount of a low melt index styrenic polymer, and (3) a blowing agent containing a major amount of carbon dioxide under a pressure sufficient to prevent prefoaming of the mixture, and (B) foaming the mixture into a region of reduced pressure to form a foam product.
REFERENCES:
patent: 4176144 (1979-11-01), Schwab
patent: 4636527 (1987-01-01), Suh et al.
patent: 4764420 (1988-08-01), Gluck et al.
patent: 5082608 (1992-01-01), Karabedian et al.
patent: 5110524 (1992-05-01), Harclerode et al.
patent: 5110837 (1992-05-01), Harclerode et al.
patent: 5218006 (1993-06-01), Reedy et al.
patent: 5229429 (1993-07-01), Hahn et al.
patent: 5240657 (1993-08-01), Harclerode et al.
patent: 5244927 (1993-09-01), Binder et al.
patent: 5250577 (1993-10-01), Welsh
patent: 5258415 (1993-11-01), Hahn et al.
patent: 5269987 (1993-12-01), Reedy et al.
patent: 5288740 (1994-02-01), Park et al.
patent: 5302624 (1994-04-01), Reedy et al.
patent: 5332761 (1994-07-01), Paquet et al.
patent: 5342560 (1994-08-01), Sturm et al.
patent: 5342857 (1994-08-01), Reedy et al.
patent: 5356944 (1994-10-01), Blythe et al.
patent: 5389694 (1995-02-01), Vo et al.
patent: 5422378 (1995-06-01), Vo
patent: 5426125 (1995-06-01), Vo et al.
patent: 5434195 (1995-07-01), Imeokparia et al.
patent: 5453454 (1995-09-01), Alicke et al.
patent: 5462794 (1995-10-01), Lindemann et al.
patent: 5464881 (1995-11-01), Hann et al.
patent: 5576094 (1996-11-01), Callens et al.
patent: 5595694 (1997-01-01), Reedy et al.
patent: 5824710 (1998-10-01), Imeokparia et al.
patent: 5863960 (1999-01-01), Schmidt et al.
Breindel Raymond M.
Miller Larry M.
Weekley Mitchell Z.
Chi Anthony R.
Eckert Inger H.
Kuhns Allan R.
Owens Corning Fiberglas Technology Inc.
LandOfFree
Process for producing extruded foam products having polystyrene does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing extruded foam products having polystyrene , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing extruded foam products having polystyrene will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2097164