Post treatment of polyurethane foam

Details Post treatment of polyurethane foam Post treatment of polyurethane foam

1992-02-10

1993-02-23

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Disparate treatment of article subsequent to working,...

264 48, 264146, 264321, B29C 6720

Patent

active

051887924

ABSTRACT:
A post treatment for cellular foam blocks such as polyurethane which includes recirculating reactant laden air through a foam block which has been slit along opposing side faces following formation. The faces are slit to a depth of one-eighth to three-eights inches with adjustably fixed knives. The slit foam block is then covered and positioned against a blower assembly in an air infiltration chamber and one side of the block is urged against air inlets whereby air is directed into the opposite face where it passes through the foam and is recirculated thereby removing the heat and finalizing the cure of the foam in a complete and consistent manner with better compression-set properties.

REFERENCES:
patent: 3015851 (1962-01-01), Wiles
patent: 3016575 (1962-01-01), Ebneth
patent: 3029473 (1962-04-01), Greenberg
patent: 3061885 (1962-11-01), Rogers et al.
patent: 3086248 (1963-04-01), Culp
patent: 3112524 (1963-12-01), Legler
patent: 3265784 (1966-08-01), Jacobs
patent: 3269882 (1966-08-01), Willy
patent: 3456047 (1969-07-01), Vinton et al.
patent: 3558753 (1971-01-01), Edlin
patent: 3682739 (1972-08-01), Tesch et al.
patent: 3812227 (1974-05-01), Blackwell et al.
patent: 3874830 (1975-04-01), Carter et al.
patent: 3884848 (1975-05-01), Ricciardi et al.
patent: 3890414 (1975-06-01), Ricciardi et al.
patent: 3901962 (1975-08-01), Kuchuris et al.
patent: 3991145 (1976-11-01), Landsman
patent: 4051211 (1977-09-01), Beser et al.
patent: 4216177 (1980-08-01), Otto
patent: 4344903 (1982-08-01), Pascouet
patent: 4364892 (1982-12-01), Rehlen et al.
patent: 4397797 (1983-08-01), Nojiri et al.
patent: 4504429 (1985-03-01), Griffiths
patent: 4537912 (1985-08-01), Griswold
patent: 4567008 (1986-01-01), Griffiths
patent: 4741951 (1988-05-01), Ricciardi et al.
patent: 4757093 (1988-07-01), Ricciardi et al.
patent: 4757094 (1988-07-01), Teumac et al.
patent: 4818775 (1989-04-01), Teumac et al.
patent: 4931236 (1990-06-01), Hettinga
patent: 4963593 (1990-10-01), Ricciardi et al.
patent: 5128379 (1992-07-01), Stone
Toyo Rubber Chemical Industry Co., Ltd brochure dated Jul. 19, 1990.
Journal of Cellular Plastics article dated Nov. 1988 pp. 431-437.
Vertifoam and Enviro-Cure Technology brochure dated Oct. 24, 1991 of Crain Industries, Inc.

Affiliated with

Also associated with

Rating

Post treatment of polyurethane foam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Post treatment of polyurethane foam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Post treatment of polyurethane foam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2202863