US4623499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacture of shaped article of organic substance
Assignee: NIHON SEKISO KOGYO Co Ltd 1-71 4-CHOME OSU NAKA-KU NAGOYA AICHI
•
Filing: 1984-08-09
•
Granted: 1986-11-18
•
Expires: 2004-08-09
Abstract
Abstract A method for manufacturing shaped articles of organic substance is disclosed, which comprises mixing an organic substance as raw material with a binder, filling a die with the resultant binder-containing mixture, compressing the mixture in a prescribed shape in the die, and forcing a gaseous curing agent through the compressed mixture thereby curing the binder in the mixture and consequently solidifying the compressed mass. This method enables shaped articles such as noise absorbers, heat insulation panels, and plate materials to be produced efficiently and inexpensively at low energy consumption by the use of an inexpensive die.
Inventors
- 👤 Toyoji Fuma
- 👤 Kazuyuki Nishikawa
- 👤 Naoshi Makiguchi
- 👤 Katsuya Nagano
- 👤 Yoshio Nakayama
- 👤 Hiroyuki Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:10
CPC Classifications
B; B27; B27N; B27N5/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
93 words
A method for the manufacture of a shaped article of an organic substance, comprising: the step of mixing an organic substance as a raw material with a binder containing a polyol and an isocyanate, the step of filling a die with the resultant binder containing mixture, the step of compressing said mixture in the shape of said die, and the step of forcing a gaseous curing agent of triethylamine or dimethyl ethylamine through the compressed mixture within said die thereby chemically curing said binder and consequently solidifying the compressed mass at room temperature.
Claim 2
Independent Claim
93 words
A method for the manufacture of a shaped article of an organic substance, comprising: the step of mixing an organic substance as a raw material with a binder containing a polyol and an isocyanate, the step of filling a die with the resultant binder containing mixture, the step of compressing said mixture in the shape of said die, and the step of forcing a gaseous curing agent of triethylamine or dimethyl ethylamine through the compressed mixture within said die thereby chemically curing said binder and consequently solidifying the compressed mass at room temperature.
Claim 3
Dependent Claim
25 words
A method according to claim 1, wherein compressed air is blown into said die to purge the compressed mass after said mixture has been solidified.
References Cited (Backward Citations)
US2850786A
Cited
US3008205A
Cited
US2976164A
Cited
US2984579A
Cited
US3086248A
Cited
US3619450A
Cited
US3699202A
Cited
US3686383A
Cited
US3891738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-17 | 1990-05-19 | 1990-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-17 | 1994-05-19 | 1994-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-17 | 1998-05-19 | 1998-11-18 | $7700.00 | Window Closed / Lapsed |